The skier's velocity will increase continuously as they ski down the hill with a constant slope and negligible friction.
As the skier begins skiing straight down a hill with a constant slope and negligible friction, their velocity will increase due to the force of gravity. The skier will continue to accelerate until they reach the bottom of the hill, at which point their velocity will be at a maximum.
Throughout the skier's descent, their potential energy will be converted to kinetic energy. At the top of the hill, the skier has a high potential energy due to their position above the ground. As the skier descends the hill, their potential energy decreases while their kinetic energy increases. The total energy (the sum of potential and kinetic energy) of the skier remains constant, assuming there is no work done by any other forces besides gravity.
Since friction is negligible, there will be no external forces acting on the skier other than gravity, and the skier's motion will be determined solely by their initial position and the slope of the hill. Therefore, the skier's velocity will increase at a constant rate as they descend the hill, and they will continue to accelerate until they reach the bottom of the hill.
So, the skier's velocity will increase continuously as they ski down the hill with a constant slope and negligible friction.
To learn more about kinetic energy visit: https://brainly.com/question/26472013
#SPJ11
As a spinning star collapses into a neutron star of a smaller radius, retaining essentially all of its original mass, its angular...
As a spinning star collapses into a neutron star of a smaller radius, retaining essentially all of its original mass, its angular velocity increases, following the conservation of angular momentum.
This is due to the conservation of angular momentum, which states that the total angular momentum of a system remains constant unless an external torque acts upon it. Since the star's radius decreases during the collapse, its moment of inertia also decreases, causing an increase in its angular velocity to conserve angular momentum.
This effect is known as the "spin-up" phenomenon and is observed in many astrophysical phenomena, including neutron star mergers and black hole formation.
You can learn more about spinning star at
https://brainly.com/question/15706699
#SPJ11
10.5 coulombs of positive charge flows from the +12 V positive terminal of a battery to the negative terminal at 0 V. What is the change in potential energy of the charge?
To find the change in potential energy of the charge, we need to use the formula:
ΔU = qΔV
where ΔU is the change in potential energy,
q is the charge that flows, and
ΔV is the change in electric potential.
In this case, 10.5 coulombs of positive charge flow from a +12 V potential to a 0 V potential. So the change in electric potential is:
ΔV = Vf - Vi = 0 - 12 = -12 V
The negative sign indicates that the potential difference is in the opposite direction to the direction of the flow of charge.
Now we can use the formula to find the change in potential energy:
ΔU = qΔV = (10.5 C)(-12 V) = -126 J
Therefore, the change in potential energy of the charge is -126 J (joules). The negative sign indicates that the potential energy of the charge has decreased as it flowed from the higher potential to the lower potential.
To know more about potential energy here
https://brainly.com/question/24284560
#SPJ11
A radioactive substance has a mean-life τ of 16 years. Assume we start with 166 kg of the substance. How many kg of the substance will be left after 27 years?Enter a number with one digit after the decimal point. Lowercase e^x is a button on the calculator.
A radioactive substance has a mean-life τ of 16 years. 35.5 kg of the substance will be left after 27 years. So after 27 years, there will be approximately 30.6 kg of the radioactive substance left.
We can use the formula for radioactive decay:
N(t) = N0 * e^(-λt)
where N(t) is the amount of the substance remaining after time t, N0 is the initial amount, λ is the decay constant (related to the mean-life τ by λ = ln(2)/τ), and e is Euler's number (approximately 2.71828).
We know N0 = 166 kg, τ = 16 years, and t = 27 years. Therefore:
λ = ln(2)/τ = ln(2)/16 = 0.04355 (rounded to five decimal places)
N(27) = 166 * e^(-0.04355 * 27) ≈ 35.5 kg (rounded to one decimal place)
To find out how many kg of a radioactive substance with a mean-life τ of 16 years will be left after 27 years, given that we start with 166 kg, we can use the decay formula:
Remaining amount = Initial amount * e^(-t/τ)
where Remaining amount is the mass left after t years, Initial amount is the initial mass (166 kg), t is the time elapsed (27 years), and τ is the mean-life (16 years)
Step 1: Insert the values into the formula:
Remaining amount = 166 kg * e^(-27/16)
Step 2: Calculate the exponent:
Exponent = -27/16 ≈ -1.6875
Step 3: Calculate e^(exponent):
e^(-1.6875) ≈ 0.1847
Step 4: Multiply the initial amount by the calculated value:
Remaining amount = 166 kg * 0.1847 ≈ 30.6 kg
So after 27 years, there will be approximately 30.6 kg of the radioactive substance left.
Visit here to learn more about radioactive substance:
brainly.com/question/1160651
#SPJ11
Your tube is a half meter long, with both ends closed. The speed of sound under current conditions (maybe different from the last experiment) is 344m/s. What is the lowest resonant frequency (largest wavelength)?
Please give units in Hz.
You have a tube that is half a meter long, with both ends closed, and the speed of sound under current conditions is 344 m/s. You'd like to know the lowest resonant frequency (largest wavelength) with units in Hz.
To find the lowest resonant frequency, we will use the formula for a closed-closed tube:
f = (2n - 1) * (v / 4L)
Here, f is the frequency, n is the harmonic number, v is the speed of sound, and L is the length of the tube. For the lowest resonant frequency, n = 1.
Step 1: Plug in the given values.
f = (2(1) - 1) * (344 m/s / 4(0.5 m))
Step 2: Simplify the equation.
f = (1) * (344 m/s / 2 m)
Step 3: Calculate the frequency.
f = 172 Hz
The lowest resonant frequency (largest wavelength) for your half-meter-long closed-closed tube under the given conditions is 172 Hz.
To know more about lowest resonant frequency:
https://brainly.com/question/29273167
#SPJ11
what is the normal force of an object on an inclined plane only being acted upon by gravity?
The normal force is the force exerted by the inclined plane perpendicular to the surface of the object. When an object is on an inclined plane and is only being acted upon by gravity, the normal force is equal to the component of the force of gravity that is perpendicular to the plane.
The normal force of an object on an inclined plane only being acted upon by gravity can be calculated using the following steps:
1. Identify the object's mass (m) and the angle of inclination (θ) of the plane.
2. Calculate the gravitational force (weight) acting on the object, which is equal to the mass times the acceleration due to gravity (g): F_gravity = m × g (where g ≈ 9.81 m/s²)
3. Determine the normal force (F_normal) acting perpendicular to the inclined plane using the formula: F_normal = F_gravity × cos(θ)
So, the normal force of an object on an inclined plane only being acted upon by gravity is F_normal = m × g × cos(θ).
To know more about gravitational force:
https://brainly.com/question/16613634
#SPJ11
At an instant when a 4.0-kg object has an acceleration equal to (5i + 3j) m/s2, one of the two forces acting on the object is known to be (12i + 22j) N. Determine the magnitude of the other force acting on the object.
1) 2.0 N
2) 13 N
3) 18 N
4) 1.7 N
5) 20 N
The magnitude of the other force acting on the object is approximately 13N. Therefore, option (2) is closest and correct.
To determine the magnitude of the other force acting on the object, we can use Newton's second law of motion, which states that the net force ([tex]F_{net}[/tex]) acting on an object is equal to the product of its mass (m) and acceleration (a):
[tex]F_{net}[/tex]= m * a
Given:
Mass of the object (m) = 4.0 kg
Acceleration (a) = (5i + 3j) m/s^2
Known force (F₁) = (12i + 22j) N
To find the unknown force (F₂), we can use the equation:
[tex]F_{net}[/tex] = F₁ + F₂
Substituting the given values, we have:
(12i + 22j) N + F₂ = (4.0 kg) * (5i + 3j) m/[tex]s^2[/tex]
Now, we can equate the corresponding components of the vectors:
12 + F₂ᵢ = 20
22 + F₂ⱼ = 12
Solving these equations, we find:
F₂ᵢ = 20 - 12 = 8
F₂ⱼ = 12 - 22 = -10
Thus, the magnitude of the other force (F₂) can be calculated using the Pythagorean theorem:
|F₂| = [tex]\sqrt{{(F_{2i})^2 + (F_{2j})^2}} = \sqrt{{8^2 + (-10)^2}} = \sqrt{{64 + 100}} \approx 12.81 , \text{N}[/tex]
Rounding to one decimal place, the magnitude of the other force acting on the object is approximately 12.8 N. Therefore, the closest option in the provided choices is 13 N (option 2).
Learn more about force, here:
https://brainly.com/question/30507236
#SPJ12
Horse to pull a cart. According to Newton's third law, if he pulls on the wagon it pulls back on him with an equal force, then the net force is zero, and the wagon will stay put. Explain
When a horse pulls a cart, it applies a force on the wagon in the forward direction. According to Newton's third law, the wagon also applies an equal and opposite force on the horse in the backward direction. These two forces cancel each other out, resulting in a net force of zero.
In other words, the horse is pulling on the cart, and the cart is pulling back on the horse with an equal force. These forces cancel each other out, resulting in a net force of zero. When there is no net force acting on an object, the object remains at rest or moves at a constant speed in a straight line, according to Newton's first law of motion. Therefore, if the horse pulls on the cart but the cart is stationary or immovable, the net force on the cart is zero, and the cart will not move. However, if there is an additional force acting on it, such as friction from the ground the cart will start to move.
Learn more about Newton's third law here:
https://brainly.com/question/29768600
#SPJ11
An object moving in simple harmonic motion has an amplitude of 0.020 m and a maximum acceleration of 40 m/s2. What is the frequency of the system?
The frequency of the system when an object moving in simple harmonic motion has an amplitude of 0.020 m and a maximum acceleration of 40 m/s2 is approximately 7.12 Hz.
In a simple harmonic motion, the relationship between the amplitude, maximum acceleration, and angular frequency is given by the equation:
amax = Aω²
Where amax is the maximum acceleration (40 m/s²), A is the amplitude (0.020 m), and ω is the angular frequency. Our goal is to find the frequency (f) of the system.
First, let's solve for the angular frequency (ω):
40 m/s² = (0.020 m)ω²
ω² = 2000 s⁻²
ω = [tex]\sqrt[/tex](2000) s⁻¹ ≈ 44.72 s⁻¹
Now, we can find the frequency (f) using the relationship between angular frequency and frequency:
ω = 2πf
44.72 s⁻¹ = 2πf
f ≈ 44.72 s⁻¹ / (2π) ≈ 7.12 Hz
Therefore, the frequency of the system is approximately 7.12 Hz.
For more such questions on Simple harmonic motion.
https://brainly.com/question/30404816#
#SPJ11
Stars like our Sun, and stars that may differ from our Sun are defined in temperature ranges. These temperature ranges of stars also describe these qualities
a. Spectral type and Color
b. Spectral type and Mass
c. Spectral type and Density
Answer:
a. Spectral type and Color
Start a ball rolling down a bowling alley and you'll find that it moves slightly slower with time. Does this violate Newton's first law? Defend your answer.
As it is a result of external forces acting upon it rather than a failure to maintain its state of motion.
The observation that a ball rolling down a bowling alley moves slightly slower with time does not violate Newton's first law of motion, also known as the law of inertia.
Newton's first law states that an object at rest will remain at rest, and an object in motion will remain in motion with a constant velocity (which includes moving at a constant speed in a straight line or moving with a constant speed in a curved path) unless acted upon by an external force. In other words, an object will maintain its state of motion (or lack thereof) unless an external force is applied to it.
In the case of a ball rolling down a bowling alley, the ball is subject to various external forces that act upon it and cause it to slow down. These forces include friction between the ball and the lane, air resistance, and deformation of the ball itself. These forces act in the opposite direction of the ball's motion and cause it to lose speed over time, as the ball's kinetic energy is dissipated into other forms of energy.
Therefore, the ball's decrease in speed over time is not a violation of Newton's first law, as it is a result of external forces acting upon it rather than a failure to maintain its state of motion.
To learn more about deformation visit:
https://brainly.com/question/13491306
#SPJ11
on an amusement park ride, passengers are seated in a horizontal circle of radius 7.5 m. the seats begin from rest and are uniformly accelerated for 21 seconds to a maximum rotational speed of 1.4 rad/s. what is the instantaneous tangential speed of the passengers 15 s after the acceleration begins?
The instantaneous tangential speed of the passengers 15 s after the acceleration begins is 7.5375 m/s.
To calculate the angular acceleration of the ride. We can use the formula:
angular acceleration = (final angular velocity - initial angular velocity) / time
Plugging in the given values, we get:
angular acceleration = (1.4 rad/s - 0 rad/s) / 21 s
angular acceleration = 0.067 rad/s^2
Next, we can use the formula for tangential velocity:
tangential velocity = radius x angular velocity
At the maximum rotational speed of 1.4 rad/s, the tangential velocity is:
tangential velocity = 7.5 m x 1.4 rad/s
tangential velocity = 10.5 m/s
Now, to find the instantaneous tangential velocity 15 seconds after the acceleration begins, we can use the formula for angular velocity:
angular velocity = angular acceleration x time
Plugging in the values, we get:
angular velocity = 0.067 rad/s^2 x 15 s
angular velocity = 1.005 rad/s
Finally, we can use the formula for tangential velocity again:
tangential velocity = radius x angular velocity
Plugging in the values, we get:
tangential velocity = 7.5 m x 1.005 rad/s
tangential velocity = 7.5375 m/s
Therefore, the instantaneous tangential speed of the passengers 15 s after the acceleration begins is 7.5375 m/s.
To know more about angular acceleration :
https://brainly.com/question/30238727
#SPJ11
how can the motion of a charged particle be used to distinguish between a magnetic and an electric field?
We can distinguish between a magnetic and an electric field by observing the motion of the charged particle, analyzing the direction of motion, and considering the influence of the particle's charge.
1. Observe the motion of the charged particle: When placed in an electric field, a charged particle will experience a force that is either attracted to or repelled from the source of the field, depending on the charge. In a magnetic field, the charged particle will experience a force that is perpendicular to both its velocity and the magnetic field, causing it to move in a circular or helical path.
2. Analyze the direction of motion: In an electric field, the charged particle moves in a straight line along the field lines, either towards or away from the source, depending on its charge. In a magnetic field, the charged particle moves in a curved path, with its direction determined by the right-hand rule.
3. Consider the influence of the particle's charge: In an electric field, the force experienced by the particle is directly proportional to its charge, while in a magnetic field, the force depends on the charge, the velocity of the particle, and the magnetic field strength.
By observing these differences in motion, you can distinguish between the presence of an electric field or a magnetic field acting on a charged particle.
Learn more about electric field:
https://brainly.com/question/14372859
#SPJ11
what is the total amount of m112 (in 1.25 lb. packages) needed to breach a 6-foot thick first class masonry wall utilizing a ground placed untamed charge?
The amount of M112 required to breach a 6-foot thick first-class masonry wall will depend on various factors such as the dimensions and characteristics of the wall, the placement and configuration of the charge, and the specific properties and performance of the explosive material.
Therefore, it is difficult to give a definitive answer without additional information. However, it is important to note that the use of explosives is a highly regulated activity that requires specialized training and permits. It should only be performed by authorized and trained personnel following established safety protocols and regulations.
Learn more about dimensions
https://brainly.com/question/28688567
#SPJ4
Suppose the ends of a 20-m-long steel beam are rigidly clamped at 0°C to prevent expansion. The rail has a cross-sectional area of 30 cm2. What force does the beam exert when it is heated to 40°C? (asteel = 1.1 ´ 10-5/C°, Ysteel = 2.0 ´ 1011 N/m2).
The 2.64 × 10^{5 } N force does the beam exert when it is heated to 40°C.
What exactly does Young's modulus mean?The ratio of tensile stress to tensile strain is known as the Young's modulus, a feature of the material that indicates how easily it can stretch and flex. Where strain is extension per unit length and stress is the amount of force applied per unit area.
Given;
Length of steel beam = 20 m
Cross-sectional area of rail = 30 cm^{2}
ΔT = 40 °C
The change in length of the steel beam is,
ΔL = L₋oαΔT
ΔL = 20 × 1.1 × 10^{-5} × 40
ΔL = 8.8 × 10^{-3}
Young's modulus is,
[tex]YL=\frac{FL}{A\(\Delta\)}[/tex]
[tex]F={YA\(\Delta\)L}/L[/tex]
[tex]F= \frac{2.0*10^{11}*30*10^{-4}*8.8*10^{-3}}{20}[/tex]
[tex]F= 2.64*10^{5}N[/tex]
To know more about the force visit:
https://brainly.com/question/13260278
#SPJ1
Rigel is more luminous than Sirius B. Rigel and Sirius B have the same temperature.Which star has the greater surface area?a.Rigelb. Sirius Bc. The samed. Not enough information
Rigel has a larger surface area than Sirius B due to its higher luminosity. Option B is the correct answer.
The Stefan-Boltzmann law relates the luminosity, radius, temperature, and surface area of a star. If two stars have the same temperature but one is more luminous than the other, we can use this law to determine which star has the larger surface area.
The formula shows that luminosity is proportional to the surface area, so if one star is much more luminous than the other, it must have a larger surface area, L = 4πR²σ[tex]T^4[/tex]. In this case, Rigel is much more luminous than Sirius B, so we can conclude that Rigel has a greater surface area.
Learn more about the Rigel and Sirius star at
https://brainly.com/question/5415607
#SPJ4
The question is -
Rigel is much more luminous than Sirius B. Rigel and Sirius B has the same temperature.
Which star has the greater surface area?
a) Rigel
b) Sirius B
c) They have the same surface area.
d) There is insufficient information to answer this question
Suppose the masses of two objects are the same and that the objects are moving toward each other at the same speed so that m1 = m2 and v1 = - v2 (same speed, opposite direction).
Predict the relative magnitudes of the forces between object 1 and object 2 during the collision.
When object 1 and object 2 collide, the forces being applied by object 1 to object 2 and by object 2 to object 1 are equal in strength but directed in different directions.
According to Newton's third law of motion, for every action, there is an equal and opposite reaction.
We can suppose that both objects feel equal and opposite forces during the collision because their masses are the same and they are traveling toward one another at the same speed. This is because the force the item experiences are equal to the rate at which its momentum changes, and since the two objects share the same mass and are traveling at the same speed toward one another, their momentum will change in an opposite manner during the collision.
Therefore, The force that objects 1 and object 2 applied to each other when they collided was of similar magnitude, as was the force that objects 2 applied to item 1.
To learn more about kinetic energy click:
brainly.com/question/26472013
#SPJ4
Capacitance of capacitors depends upon: Answer the space between the conductors. the material between the conductors. the geometry of the conductors. all of these answers. none of these answers.
Capacitance of capacitors depends upon
The capacitance of capacitors depends upon the space between the conductors, the material between the conductors, and the geometry of the conductors. Therefore, the correct answer is "all of these answers."
Capacitance is a measure of a capacitor's ability to store electrical energy. It is influenced by the following factors:
1. The space between the conductors: As the distance between the conductors increases, the capacitance decreases.
2. The material between the conductors: Different materials have different dielectric constants, which affect the capacitance. A higher dielectric constant results in a higher capacitance.
3. The geometry of the conductors: The surface area and shape of the conductors also influence capacitance. Larger surface areas and specific shapes can increase capacitance.
To learn more about capacitance https://brainly.com/question/30529897
#SPJ11
how does the rate of hydrogen consumption of a main-sequence b star compare to the hydrogen consumption of the sun?
A main-sequence B star consumes hydrogen at a faster rate than the Sun due to its higher luminosity and temperature.
A main-sequence B star, which is a hot and bright star, consumes hydrogen at a rate that is substantially higher than that of the Sun. The nuclear fusion events in the cores of B stars are more active because they are more massive and hotter than the Sun.
In comparison to the Sun, which is a smaller and colder star, this causes a quicker depletion of hydrogen fuel, resulting in shorter lives for B stars.
Learn more about hydrogen:
https://brainly.com/question/25566753
#SPJ4
a convex spherical mirror, whose focal length has a magnitude of 14.0 cm, is to form an image 11.6 cm behind the mirror. (a) where should the object be placed? cm in front of the mirror (b) what is the magnification of the mirror?
a) The object should be placed 6.67 cm in front of the mirror.
b) The magnification of the mirror is 1.74, which means the image is larger than the object and is upright (since the magnification is positive).
How can we use the mirror formula to solve this problem?We can use the mirror formula to solve this problem:
1/f = 1/do + 1/di
where:
f = focal length of the mirror
do = object distance
di = image distance
(a) To find the object distance, we can rearrange the mirror formula as:
1/do = 1/f - 1/di
Substituting f = 14.0 cm and di = -11.6 cm (since the image is behind the mirror), we get:
1/do = 1/14.0 - 1/(-11.6) = 0.150
Taking the reciprocal of both sides, we get:
do = 6.67 cm (rounded to two decimal places)
Therefore, the object should be placed 6.67 cm in front of the mirror.
(b) The magnification of the mirror can be found using the magnification formula:
m = -di/do
Substituting do = 6.67 cm and di = -11.6 cm, we get:
m = -(-11.6)/6.67 = 1.74 (rounded to two decimal places)
Therefore, the magnification of the mirror is 1.74, which means the image is larger than the object and is upright (since the magnification is positive).
Learn more about magnification
brainly.com/question/21370207
#SPJ11
Talk about the situation involves velocity of a wave on a string.
The velocity of a wave on a string is determined by the tension in the string, the mass of the string, and the linear density of the string.
The mass of the string per unit length is known as its linear density. Since the tension in the string is typically constant, the mass and linear density define the wave's velocity.
The velocity rises when the linear density drops, the string mass rises, or the tension in the string falls. A light, thin string, for instance, will move more quickly than a heavy, thick string.
The medium through which the wave is moving, such as air or a solid, has an impact on the wave's velocity as well.
Compared to a medium like air, a solid medium has a higher wave velocity.
To learn more about velocity visit:
https://brainly.com/question/80295
#SPJ4
A 4-mol ideal gas system undergoes an adiabatic process where it expands and does 20 J of work on its environment. How much heat is received by the system?
Adiabatic process, no heat is exchanged between the system and its environment. Since the 4-mol ideal gas system undergoes an adiabatic process while doing 20 J of work on its environment, the heat received by the system is 0 J.
An adiabatic process is one in which the rate of heat transfer is zero. Additionally, any alteration in internal energy actually results in work being done, as stated by the first law of thermodynamics.
This implies that there will be the following changes in internal energy.
Internal energy change equals one work done by the gas.
Additionally, the system's internal energy will change during an adiabatic process.
As a result, we can say that the following propositions are true for an adiabatic process.
An adiabatic process causes a change in the system's internal energy.
There is no heat transport into or out of the system when an adiabatic operation is taking place.
Learn more about Adiabatic process here
https://brainly.com/question/14930930
#SPJ11
which of the following statements are true? the average speed of gas molecules decreases with decreasing temperature. the average kinetic energy of gas molecules increases with increasing temperature.
Both of the following statements are true the average speed of gas molecules decreases with decreasing temperature. the average kinetic energy of gas molecules increases with increasing temperature.
Both statements are true because the average speed of gas molecules decreases with decreasing temperature because as the temperature decreases, the molecules/ gas have less energy, resulting in slower movement. molecules have less energy, resulting in slower movement. move slower due to reduced energy.
On the other hand, the average kinetic energy of gas molecules increases with increasing temperature because as the temperature increases, the molecules move faster and have more energy. When temperature increases, the gas molecules gain more energy and move faster, leading to an increase in their average kinetic energy. The motor energy of an article is the type of energy that it has because of its movement. It is defined as the effort required to propel a mass-bearing object from rest to its stated velocity.
learn more about kinetic energy
https://brainly.com/question/8101588
#SPJ11
a work of 15j is required to stretch a spring 10 cm beyond its natural length. how much work is done to stretch an additional 5 cm?
It requires 0.375j of work to stretch the spring an additional 5 cm beyond its natural length.
Who much spring required to stretch beyond its natural length?To stretch the spring 10 cm beyond its natural length requires 15j of work. To stretch it an additional 5 cm requires additional work.
We can use the formula for work done on a spring:
Work = 0.5kx²
Where k is the spring constant and x is the distance the spring is stretched or compressed from its natural length.
Since we know that 15j of work is required to stretch the spring 10 cm, we can solve for k:
15j = 0.5k(0.1m)²
k = 300 N/m
Now we can use this value of k to find the work required to stretch the spring an additional 5 cm:
Work = 0.5(300 N/m)(0.05m)²
Work = 0.375j
It requires 0.375j of work to stretch the spring an additional 5 cm beyond its natural length.
Learn more about Spring
brainly.com/question/15106772
#SPJ11
Two ideal gases, X and Y, are thoroughly mixed and at thermal equilibrium in a single container. The molecular mass of X is 9 times that of Y. What is the ratio of root-mean-square velocities of the two gases, vX, rms /vY, rms?
The root-mean-square velocity of an ideal gas is given by:
v_rms = √(3kT/m)
where k is the Boltzmann constant, T is the absolute temperature, and m is the molecular mass of the gas.
Since the gases are at thermal equilibrium, they have the same temperature T. Therefore, the ratio of their root-mean-square velocities is:
vX,rms/vY,rms = √(3kT/mX) / √(3kT/mY)
Canceling the common factors of 3kT in the numerator and denominator, we get:
vX,rms/vY,rms = √(mY/mX)
Substituting the given ratio of molecular masses, we get:
vX,rms/vY,rms = √(mY/9mY) = 1/3
Therefore, the ratio of root-mean-square velocities of the two gases is 1/3, or vX,rms/vY,rms = 1/3.
To know more about ideal gas :
https://brainly.com/question/31463642
#SPJ11
A 1.5-kg object has a velocity of 5j m/s at t = 0. It is accelerated at a constant rate for five seconds after which it has a velocity of (6i + 12j) m/s. What is the magnitude of the resultant force acting on the object during this time interval?
1) 3.8 N
2) 3.2 N
3) 2.8 N
4) 4.3 N
5) 4.6 N
The magnitude of the resultant force acting on the object during this time interval is approximately 2.8 N. The correct option is 3.
To find the magnitude of the resultant force acting on the 1.5-kg object, we first need to determine the acceleration. The initial velocity (v0) is given as 5j m/s, and the final velocity (vf) is (6i + 12j) m/s after 5 seconds (t). We can find the acceleration (a) using the formula:
a = (vf - v0) / t
a = [(6i + 12j) - (0i + 5j)] / 5
a = (6i + 7j) / 5
a = 1.2i + 1.4j m/s²
Now that we have the acceleration, we can find the net force (F) using Newton's second law of motion, F = ma:
F = (1.5 kg) × (1.2i + 1.4j) m/s²
F = 1.8i + 2.1j N
To find the magnitude of the resultant force, we use the Pythagorean theorem:
|F| = √[[tex](1.8)^2 + (2.1)^2[/tex]]
|F| = √(3.24 + 4.41)
|F| = √(7.65)
|F| ≈ 2.8 N
For more such questions on Magnitude.
https://brainly.com/question/12885768#
#SPJ11
A heavily loaded boat is floating in a pond. The boat starts to sink because of a leak but quick action plugging the leak stops the boat from going under although it is now deeper in the water. What happens to the surface level of the pond?
a. It goes down.
b. More information is needed to reach a conclusion.
c. It stays the same.
d. It goes up
It doesn't change.
A heavily loaded boat floating in a pond. The boat starts to sink due to a leak, but quick action plugging the leak stops it from going under, even though it is now deeper in the water. You want to know what happens to the surface level of the pond. The correct answer is:
c. It stays the same.
When the boat is floating, it displaces an amount of water equal to its weight. When it starts to sink and is quickly plugged, it still displaces the same amount of water, but now in a different form (partly submerged). Since the total displaced water volume stays the same, the surface level of the pond remains unchanged.
Learn more about volume.
brainly.com/question/1578538
#SPJ11
(T/F) The mechanical energy before and after an event are different.
True. The mechanical energy before and after an event can be different, as mechanical energy can be converted to other forms of energy or vice versa during the event.
The mechanical energy before and after an event are generally different because mechanical energy is a measure of the potential and kinetic energy of an object or system. In most situations, energy is not conserved, and some energy is lost or gained due to various factors such as friction, air resistance, or heat transfer. For example, when an object falls from a height, its potential energy is converted into kinetic energy. However, as the object collides with the ground, some of the kinetic energy is lost as sound and heat energy, resulting in a decrease in the total mechanical energy of the system.
Learn more about friction here:
https://brainly.com/question/13000653
#SPJ11
ga 10-cm -long thin glass rod uniformly charged to 7.00 nc and a 10-cm -long thin plastic rod uniformly charged to -7.00 nc are placed side by side, 3.90 cm apart. what are the electric field strengths e1 to e3 at distances 1.0 cm , 2.0 cm , and 3.0 cm , from the glass rod along the line connecting the midpoints of the two rods?
The total electric field strength along the line connecting the midpoints of a charged glass and plastic rod decreases with distance and is directed towards the plastic rod at distances of 2.0 cm and 3.0 cm.
The negative sign in E1', E2', and E3' indicates that the electric field created by the plastic rod is in the opposite direction to that of the glass rod.
To find the total electric field at each distance, we can use the principle of superposition, which states that the total electric field at a point is the vector sum of the electric fields created by each charged object at that point.
At each distance, the direction of the electric field created by the glass rod is the same, while the direction of the electric field created by the plastic rod is opposite. Therefore, the total electric field E1 to E3 along the line connecting the midpoints of the two rods is given by:
E1 = E1' + E = 0
E2 = E2' + E = -4.86 x 10³ N/C
E3 = E3' + E = -1.61 x 10³ N/C
where E is the electric field created by the glass rod alone.
Thus, at a distance of 1.0 cm from the glass rod along the line connecting the midpoints of the two rods, the total electric field is zero. At distances of 2.0 cm and 3.0 cm, the total electric field is directed towards the plastic rod and decreases in magnitude as the distance increases.
Learn more about electric field strength at
https://brainly.com/question/15170044
#SPJ4
The question is -
A 10-cm-long thin glass rod uniformly charged to 7.00 nC and a 10-cm-long thin plastic rod uniformly charged to -7.00 nC are placed side by side, 4.20 cm apart. What are the electric field strengths of E1 to E3 at distances 1.0 cm, 2.0 cm, and 3.0 cm from the glass rod along the line connecting the midpoints of the two rods?
If there was no gravity acting on the object and it was launched at an upwards angle of 45 degrees, what would happen to the object?
Answer:
The object would continue to move upwards at the same angle.
Explanation:
Gravity is (generally) the only force acting on an object. To take this away, you would have no forces acting on the object.
According to Newton's 1st Law, it would therefore continue moving indefinitely.
I hope this helps!
How can we find the absorbance/concentration for solutions of the same chemical species w/ different concentrations?
We can use a spectrophotometer to measure the absorbance of each solution at a specific wavelength, then use Beer's Law to calculate the concentration of each solution based on their respective absorbance values and the molar absorptivity coefficient of the solute at that wavelength.
Spectrophotometry is a common analytical technique used to measure the amount of light absorbed by a sample at a specific wavelength. In the case of solutions containing a known chemical species, the amount of light absorbed is directly proportional to the concentration of the solute in the solution, according to Beer's Law. This law states that the absorbance (A) of a solution is equal to the molar absorptivity coefficient (ε) of the solute at a given wavelength, multiplied by the path length (l) of the sample cell, and the concentration (c) of the solute in the solution. Mathematically, this can be represented as:
A = εcl
By measuring the absorbance of solutions of known concentrations at a specific wavelength using a spectrophotometer, we can plot a calibration curve of absorbance versus concentration. This curve can then be used to determine the concentration of an unknown solution of the same chemical species by measuring its absorbance at the same wavelength and using the equation:
c = A / (εl)
Thus, by using a spectrophotometer and Beer's Law, we can determine the concentration of solutions of the same chemical species with different concentrations based on their respective absorbance values and the molar absorptivity coefficient of the solute at that wavelength.
To know more on absorbance
https://brainly.com/question/17062521
#SPJ4
