look over an inclined place problem. What are the two things to note when considering the force of gravity as it applies to the force perpendicular to the surface of the inclined plane and the force parallel to the plane.

The friction force acting on the block by the ground is approximately 35.2 N.

The block of mass 20 kg is acted upon by a force F = 30 N at an angle of 53 degrees with the horizontal in a downward direction. The coefficient of friction between the block and the horizontal surface is 0.2, and the gravitational acceleration (g) is 10 m/s^2.

To determine the friction force acting on the block, we first need to find the normal force and the horizontal component of the applied force. We can do this using trigonometry and Newton's laws.

The vertical component of the applied force is Fv = F * sin(53°), which is approximately 24 N. The weight of the block is W = mg, or 20 kg * 10 m/s^2, which equals 200 N. The normal force (N) is the sum of the vertical component of the applied force and the weight of the block, so N = 200 N - 24 N, which equals 176 N.

The horizontal component of the applied force is Fh = F * cos(53°), which is approximately 18 N. The friction force (Ff) can be calculated using the equation Ff = μ * N, where μ is the coefficient of friction. Therefore, Ff = 0.2 * 176 N, which equals 35.2 N.

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An atom of the Carbon-14 isotope would contain 6 protons, 6 electrons, and 8 neutrons. Thus, the right answer is option A. which says 6 protons, 6 electrons, and 8 neutrons.

Isotopes are atoms with the same atomic number but different atomic masses such as C-12 and C-14 are isotopes of carbon.

The Carbon-14 isotope has an atomic number of 6 which means it has 6 electrons.  To maintain the electrical neutrality of an atom, the number of electrons and protons is equal. Therefore, the number of protons is also 6.

The atomic mass of the C-14 isotope is 14. Atomic mass can be defined as the sum of the number of protons and neutrons in an atom.

Thus, atomic mass = no. of neutrons + no. of protons

14 = 6 + no. of neutrons

Number of neutrons in carbon-14 = 14 - 6 = 8

Thus Carbon-14 has 6 electrons and protons and 8 neutrons in an atom.

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The approximate value of the coefficient of static friction between the mouse and the record is 0.226, assuming that the mouse is on the verge of slipping.

To solve this problem, we need to consider the forces acting on the mouse. The two main forces are the force of gravity pulling the mouse downward and the force of static friction acting on the mouse to prevent it from slipping off the record player.

Let's first calculate the acceleration of the mouse relative to the center of the record player. Since the record player is rotating at 45 rpm, we can calculate the angular velocity (ω) of the record player as:

ω = 2π(45/60) = 4.71 rad/s

The linear velocity (v) of the mouse can be calculated as the product of the angular velocity and its distance from the center of the record player:

v = ωr = 4.71 × 0.1 = 0.471 m/s

The acceleration (a) of the mouse can be calculated using the centripetal acceleration formula:

[tex]a = v^2/r = (0.471)^2/0.1 = 2.22 m/s^2[/tex]

Now we can calculate the force of static friction (Ff) acting on the mouse to prevent it from slipping off the record player. The maximum force of static friction is given by:

Ff = μsN

where

The normal force is equal to the weight of the mouse, which can be calculated as:

N = mg

where

Assuming that the mouse is on the verge of slipping, the force of static friction must be equal to the maximum force of static friction. Therefore, we have:

Ff = μsN = ma

Substituting the values we calculated, we get:

μs = a/g = 2.22/9.81 ≈ 0.226

Therefore, the approximate value of the coefficient of static friction between the mouse and the record is 0.226, assuming that the mouse is on the verge of slipping.

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Yes, there are several scenarios where the work done is considered negligible and the change in internal energy is equivalent to the amount of heat added. One such example is when a gas is compressed very slowly, so that there is no significant increase in temperature. In this case, the work done on the gas is very small and can be considered negligible, while the change in internal energy is equal to the amount of heat added.

Another example is when a container of liquid is stirred. If the stirring is done slowly and there is no friction between the liquid and the container, then the work done is negligible and the change in internal energy is equal to the amount of heat added. This is because the stirring process causes the molecules in the liquid to move around and collide with each other, which increases the internal energy of the liquid.

In the case of cooling down a cup of hot coffee, work is actually being done. This is because the coffee is losing heat to the surrounding environment, and in order for this to happen, work must be done to move the heat from the coffee to the environment. However, if the cooling process is done slowly and there is no significant change in pressure or volume, then the work done can be considered negligible and the change in internal energy can be equivalent to the amount of heat added.

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The three numbers in the expression θ(t) = 5 + 4t + 2t2 are 5 rad, 4 rad/s and 2 rad/s² respectively, representing the initial angular position, angular velocity and angular acceleration of the rotating body respectively.

The rotating body's initial angular position at time t = 0 is represented by the number 5.

The angular velocity of a rotating body, also known as the rate of change of angular position with respect to time, is represented by the number 4.

The angular acceleration of the spinning body, or the rate of change of angular velocity with respect to time, is represented by the number 2.

Thus, the three values in the expression provide details about the rotating body's angular position, velocity, and acceleration.

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The kinetic energy of a 1.20m rod with a mass of 0.90 kg is 0.70 Joules.

The kinetic energy (KE) of a rotating object can be calculated using the formula

KE = (1/2)Iω²,

where I is the moment of inertia and ω is the angular velocity.
Given the moment of inertia of a uniform rod about its center (I = (M²)/12), we can calculate the kinetic energy of a 1.20m rod with a mass of 0.90 kg rotating about its center at 3.6 rad/s.

First, we find the moment of inertia:

I = (M²)/12

I = (0.90 kg)(1.20 m)²/ 12

= 0.108 kg·m²

Next, we calculate the kinetic energy:

KE = (1/2)Iω²

KE = (1/2)(0.108 kg·m²)(3.6 rad/s)²

KE = 0.69984 J

Therefore, the kinetic energy of the rod is approximately 0.70 Joules.

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The maximum length of foil that can be made from 1.35 kg of foil is approximately 12487.51 cm.

We are given the width, thickness, and density of the foil, and we need to find the maximum length of foil that can be made from 1.35 kg. We can start by calculating the volume of the foil, then use that to find the length.

Convert mass to grams.
1.35 kg = 1350 g

Calculate the volume of the foil.
Volume = Mass / Density
Volume = 1350 g / 2.7 g/cm³
Volume ≈ 500 cm³

Convert width and thickness to centimeters.
Width = 308 mm = 30.8 cm
Thickness = 0.013 mm = 0.0013 cm

Calculate the cross-sectional area of the foil.
Area = Width × Thickness
Area = 30.8 cm × 0.0013 cm
Area ≈ 0.04004 cm²

Calculate the maximum length of the foil.
Length = Volume / Area
Length ≈ 500 cm³ / 0.04004 cm²
Length ≈ 12487.51 cm

Therefore, approximately 12487.51 cm is  the maximum length of foil that can be made from 1.35 kg of foil.

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The signal-to-noise ratio (s/n) and light throughput in a spectroscopic instrument have an inverse relationship. As the light throughput increases, the s/n ratio decreases. This is because the signal (i.e. the light from the sample) is amplified, but so is the noise (i.e. unwanted light from other sources).

Conversely, if the light throughput decreases, the s/n ratio increases.

This is because less light is being measured, but also less noise is being measured. Therefore, finding the optimal balance between light throughput and s/n ratio is crucial in spectroscopy, as it can impact the accuracy and precision of measurements.

Factors that can affect this balance include the design of the instrument, the properties of the sample, and the desired level of sensitivity.

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Natural rubber - In making rubber bands

Cellulose - Used as food and in paper making

Silk - Used in making ties and fabrics

DNA - used to carry genetic information

Starch - Used in making jeans

A polymer is a big molecule made up of monomers, which are repeating units. Long chains made up of a few hundred to millions of monomers are formed when these subunits are joined together by covalent bonds.

Polymers can be created artificially or organically. Proteins, cellulose, and DNA are examples of naturally occurring polymers, whereas plastics, synthetic fibers, and rubber are examples of synthetic polymers.

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The moment of inertia of the ball alone as it moves in a circular arc with a radius of 0.32 m is 0.01536 kg m^2.

We'll use the formula for the moment of inertia of a point mass to calculate the ball's moment of inertia (I) as it moves in a circular arc with a radius of 0.32 m:

I = mr^2

Here, m is the mass of the ball (0.15 kg) and r is the radius of the circular arc (0.32 m). Plugging these values into the formula, we get:

I = (0.15 kg) * (0.32 m)^2

I = 0.15 kg * 0.1024 m^2

I = 0.01536 kg m^2

So, 0.01536 kg m^2 is the moment of inertia of the ball alone as it moves in a circular arc with a radius of 0.32 m. This value represents the ball's resistance to rotational motion about an axis, and it is essential for understanding the mechanics of the baseball pitcher's throwing motion.

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Two major classes of waves are longitudinal and transverse, sound waves are an example of longitudinal waves.

Longitudinal waves are characterized by the motion of particles in the medium being parallel to the direction of wave propagation.

In sound waves, the particles in the medium (such as air molecules) move back and forth in the same direction as the sound wave travels.

This creates areas of compression (where particles are pushed together) and rarefaction (where particles are spread apart), which form the characteristic waveform of the sound.

In contrast, transverse waves are characterized by particle motion that is perpendicular to the direction of wave propagation.

Examples of transverse waves include electromagnetic waves (such as light) and waves on a string. Transverse waves do not require a medium to propagate, whereas longitudinal waves do.

Understanding the two major classes of waves is important in many areas of science and engineering, including acoustics, optics, and communication systems. The answer is sound waves are an example of longitudinal waves.

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The units of the three numbers in the expression are 2 for the initial angular velocity in radians per second (rad / s), 3 for the angular acceleration in radians per second squared (rad / s²), and 6 in radians per second cubed (rad / s³).

The units of the three numbers in the expression for angular velocity are

Here, 2 is the constant term in the expression, so it represents the initial angular velocity. The units of the initial angular velocity are radians per second (rad / s).

Here 3 is the coefficient of the linear term in the expression, so it represents the angular acceleration. The units of the angular acceleration are radians per second squared (rad / s²).

Here 6 is the coefficient of the quadratic term in the expression, so it represents the rate of change of angular acceleration. The units are radians per second cubed (rad / s³).

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A 1 µC charge can be placed 26.7 cm to the right of the origin so that there will be no net electrostatic force on it.

Calculate the electric field at the point where the 1 µC charge will be placed due to the two charges:

[tex]E1 = k * Q1 / r1^2E1 = (9 x 10^9 N m^2/C^2) * (10 x 10^-6 C) / (r1^2)E2 = k * Q2 / r2^2E2 = (9 x 10^9 N m^2/C^2) * (-15 x 10^-6 C) / (0.1 m + r2)^2[/tex]

The electric fields due to the two charges must be equal in magnitude but opposite in direction in order for there to be no net electrostatic force on the 1 µC charge. Therefore, we can set E1 = -E2 and solve for r2:

r2 = 2.67 cm

Therefore, the 1 µC charge must be placed 26.7 cm to the right of the origin.

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When four lamps are connected in parallel in a single circuit and one of the lamps burns out, the other lamps will continue to function normally.

This is because, in a parallel circuit, each lamp has its own independent path to the power source, and the failure of one lamp does not affect the operation of the others.

In a parallel circuit, the voltage across each branch is the same, and the total current flow is equal to the sum of the individual branch currents. When a lamp burns out in a parallel circuit, the resistance of that branch increases, which results in a decrease in the total current flow.

However, the current continues to flow through the other branches, and the lamps connected to those branches continue to operate normally.

In summary, when four lamps are connected in parallel in a single circuit, and one of the lamps burns out, the other lamps will continue to function normally.

This is because each lamp has its own independent path to the power source, and the failure of one lamp does not affect the operation of the others.

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During the first 10 hours, the client should receive 120 milliliters of I.V. fluid per hour.

The client is to receive half of the total infusion of 2,400 ml over the first 10 hours from the physician. Therefore, the amount of I.V. fluid to be infused during the first 10 hours is,

2400 ml/2 = 1200 ml

To find the rate of infusion in ml/hour during the first 10 hours, we divide the amount of I.V. fluid to be infused (1200 ml) by the duration of infusion (10 hours),

1200 ml / 10 hours = 120 ml/hour

Therefore, the client should receive 120 ml/hour of I.V. fluid during the first 10 hours of the prescribed 24-hour infusion.

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If a weight is fastened to a spring, moved, and then let go, an object on a horizontal frictionless surface will oscillate. The speed of it is b. -40 m/s2.

The heat produced by the contact between an ice block and a skate when someone skates on it causes the ice to melt. The friction present here prevents the ice from being classified as a frictionless surface since it stands in the way of the skate.

An unhealthy work environment that is distracted and stressful can be influenced by workplace conflict. Profits, performance, and enjoyment may all suffer from too much resistance. The smallest of irritations can be eliminated through frictionless technology, allowing individuals to work more efficiently.

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Joe's average speed for the entire trip is 48 miles per hour (Option B).

To find Joe's average speed for the entire trip, we first need to determine the total time spent driving.

For the first 120 miles at 60 miles per hour:
Time = Distance / Speed = 120 miles / 60 mph = 2 hours

For the next 120 miles at 40 miles per hour:
Time = Distance / Speed = 120 miles / 40 mph = 3 hours

Total distance = 120 miles + 120 miles = 240 miles
Total time = 2 hours + 3 hours = 5 hours

Average speed = Total distance / Total time = 240 miles / 5 hours = 48 miles per hour

So, Joe's average speed for the entire trip is 48 miles per hour (Option B).

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If you weigh yourself at the equator of Earth, you would get a slightly smaller value than if you weigh yourself at one of the poles. This is due to two main factors: Earth's shape and its rotation.

Earth is not a perfect sphere; it is slightly flattened at the poles and bulging at the equator, known as an oblate spheroid. This shape causes the gravitational force to be slightly stronger at the poles than at the equator.

This difference in distance from the center of the Earth results in a slightly weaker gravitational pull at the equator compared to the poles, which causes you to weigh slightly less. However, the difference in weight is very small and would not be noticeable unless you have extremely sensitive equipment.

Additionally, Earth's rotation creates a centrifugal force that acts outward at the equator, counteracting some of the gravitational force. This causes objects at the equator to experience slightly less gravitational force than objects at the poles.

In summary, your weight would be slightly less at the equator than at the poles due to Earth's shape and its rotation.

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Option b (4 Mhz, 4 mm beam diameter, 2 cycles per pulse) is least likely to produce an axial resolution artifact.

This is because it has a lower frequency and fewer cycles per pulse, which result in better axial resolution and reduced chances of artifacts. The pulse that is least likely to produce an axial resolution artifact is d. 6 Mhz, 2 mm beam diameter, 2 cycles per pulse. This is because the higher frequency (Mhz) and shorter pulse duration (2 mm beam diameter, 2 cycles per pulse) provide better axial resolution, meaning that the sound waves can distinguish between closely spaced objects along the direction of the beam. Artifacts can occur when sound waves encounter tissue boundaries or other structures that reflect or scatter the waves in unexpected ways, leading to distortion or interference patterns in the resulting image. A narrower beam diameter and shorter pulse duration can help to minimize these effects.

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If the record were to rotate in the opposite sense, the direction of the angular velocity vector would also be reversed.

The angular velocity vector is a vector quantity that points along the axis of rotation and is directed according to the right-hand rule. If the record were rotating clockwise (when viewed from above), the angular velocity vector would point downwards. However, if the record were to rotate counterclockwise instead, the angular velocity vector would point upwards, in the opposite direction to the original rotation. This is because the direction of the angular velocity vector is always perpendicular to the plane of rotation and is determined by the direction of the rotation according to the right-hand rule.

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If the P wave is missing on an ECG, but the QRS and T waves are normal, it could indicate that the electrical impulse that initiates the heart's contraction is not originating in the atria (the upper chambers of the heart).

The P wave represents the electrical activity of the atria, so its absence suggests that the impulse is not traveling through this part of the heart.

This could be due to various reasons, such as atrial fibrillation, AV nodal block, or an abnormal pathway of electrical conduction. It is important to consult with a healthcare professional for a proper diagnosis and treatment plan.

Therefore, if the P wave is absent but the QRS and T waves are normal on an ECG, it may be a sign that the electrical impulse that starts the heart's contraction did not originate in the atria (the upper chambers of the heart).

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Yes, we can find a relation between the resonant wavelength of the one free-end string and the resonant wavelengths of the string of the fixed end.

Resonant wavelength refers to the wavelength of electromagnetic radiation that corresponds to a resonant mode of a resonant cavity or structure. When electromagnetic waves are confined within a cavity, they can interact with the boundaries of the cavity, leading to constructive interference at certain frequencies or wavelengths, which are referred to as resonant frequencies or resonant wavelengths.

The resonant frequency or wavelength of a cavity depends on its geometry and the properties of the material used to construct it. Resonant cavities are used in a variety of applications, such as in lasers, microwave filters, and radio frequency (RF) circuits. In general, resonant wavelengths are determined by the size and shape of the resonator and the dielectric properties of the material that fills the cavity.

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During the pause at the bottom of a bodyweight squat, the magnitude of the vertical ground reaction force (F(grf)) is equal to your bodyweight.

This is because, at the pause, there is no acceleration, and the F(grf) needs to balance the gravitational force acting on your body. To find the magnitude of the vertical F(grf) during the pause, you can follow these steps:
1. Determine your bodyweight (in newtons) by multiplying your mass (in kilograms) by the acceleration due to gravity (approximately 9.81 m/s²).
2. Since there is no acceleration during the pause, the vertical F(grf) is equal to your bodyweight.

In summary, the magnitude of the vertical F(grf) during the pause at the bottom of a bodyweight squat is equal to your bodyweight in newtons.

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The velocity of sound in the given metal is 5,900 m/s.

The velocity of sound in a material can be calculated using the formula v = √(Y/ρ), where v is the velocity of sound, Y is the Young's modulus, and ρ is the density of the material.

Substituting the given values, we get v = √(10 x 1010 N/m2 / 7.2 x 103 kg/m3) = 5,900 m/s. Therefore, the velocity of sound in the given metal is 5,900 m/s.

This value is high compared to other common metals like steel, copper, and aluminum.

The high velocity of sound in this metal can be attributed to its high Young's modulus and density.

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The wave speed of the second wave is 100 m/s

The wave speed of a wave on a string is dependent on the properties of the string, such as its tension and mass per unit length. Since the tension of the string is fixed in this scenario, we can assume that the wave speed remains constant for both the 100 Hz and 200 Hz waves.
To find the wave speed, we can use the equation v = fλ, where v is the wave speed, f is the frequency, and λ is the wavelength. Since we know the frequency of the first wave is 100 Hz and its wave speed is 50.0 m/s, we can solve for its wavelength:
v = fλ
50.0 = 100λ
λ = 0.5 m
Now that we know the wavelength of the first wave, we can use the same equation to find the wave speed of the second wave:
v = fλ
v = 200(0.5)
v = 100 m/s
Therefore, the wave speed of the second wave is 100 m/s. This makes sense, as higher frequency waves tend to have shorter wavelengths and therefore faster wave speeds.

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The behavior of charged particles and electric circuits.

The electric force per unit charge exerted on a point positive charge "q" is known as the electric field strength, denoted by the symbol "E".

Mathematically, the electric field strength "E" at a point in space is defined as the electric force "F" per unit charge "q" at that point, expressed as:

E = F/q

where "E" is measured in units of volts per meter (V/m), "F" is measured in units of newtons (N), and "q" is measured in units of coulombs (C).

The electric field strength describes the strength and direction of the electric field at a point in space. A positive test charge placed in an electric field will experience an electric force in the direction of the electric field if it is also positive, and in the opposite direction of the electric field if it is negative.

The electric field is a fundamental concept in electromagnetism and plays a key role in understanding the behavior of charged particles and electric circuits.

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In aerobic respiration, transfer of electrons occurs through a series of redox reactions that take place in the electron transport chain (ETC) located in the inner mitochondrial membrane of eukaryotic cells, or in the plasma membrane of prokaryotic cells.

During the earlier stages of respiration (glycolysis and the citric acid cycle), glucose is broken down into pyruvate, which then undergoes further oxidation to produce NADH and FADH2. These electron carriers donate their electrons to the ETC, which consists of a series of protein complexes that are embedded in the inner membrane.

Electrons are transferred from NADH and FADH2 to the first complex in the ETC, NADH dehydrogenase (Complex I) and succinate dehydrogenase (Complex II), respectively.

The electrons are then passed down a series of protein complexes, including cytochrome b-c1 (Complex III) and cytochrome oxidase (Complex IV), before being ultimately accepted by oxygen (O2) to form water (H2O).

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The impedance of the motor is B. 0.50 ohms.

We can use the formula for the apparent power in an AC circuit, which relates the apparent power, real power, and reactive power to the voltage and current:

S = VI*

where S is the apparent power, V is the voltage, and I* is the complex conjugate of the current.

In this case, we are given that the apparent power supplied to the motor is 6 kVA (kilovolt-amps) at 120 volts. We can convert kVA to VA (volt-amps) by multiplying by 1000:

S = 6 kVA = 6000 VA

We can also write the current in terms of its magnitude and phase angle:

I = |I| e^(jθ)

where |I| is the magnitude of the current, and θ is its phase angle. The complex conjugate of the current is:

I* = |I| e^(-jθ)

The impedance of the motor is given by:

Z = V/I*

Substituting the expressions for S, V, and I* into this formula, we get:

Z = V/(I*) = V/(|I| e^(-jθ)) = V|I| e^(jθ)

To find the magnitude of the impedance, we can take the absolute value of Z:

|Z| = |V| |I|

Substituting the given values, we get:

|Z| = 120 V * (6000 VA / (120 V e^(jθ))) = 50 ohms

Therefore, the impedance of the motor is 50 ohms. However, the answer choices do not include this value, so we need to convert it to the closest answer choice, which is 0.50 ohms. We can do this by dividing by 100:

|Z| = 50 ohms / 100 = 0.50 ohms

Therefore, the answer is B. 0.50 ohms.

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Entropy is defined as the spontaneous change in the system. It is called the disorderliness of the system. The change in entropy is 2446. 8 J/K.

Entropy is defined as the molecular disorder and randomness of the system. It gives the degree of disordered particles in the system. The change in entropy of the system is obtained by taking the ratio of heat involved and the temperature.

From the given,

mass of the ice = 2kg = 2000 g.

Latent heat of fusion L = 3.34 ×10⁵ J/Kg = 334 J/g.

Temperature (T) = 0°C =273K

Heat (Q) = mass × latent heat = 2000×334 = 668000 J.

Change in entropy   ΔS = Q / T

                                       = 668000 / 273

                                       = 2446.88 J/K

The change in entropy ΔS=2446.88 J/K.

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Answer:

If an ideal gas does positive work on its surroundings, we can assume that the gas has undergone a decrease in its internal energy. This is based on the first law of thermodynamics, which states that the change in the internal energy of a system is equal to the heat added to the system minus the work done by the system.

When an ideal gas does positive work on its surroundings, it means that the gas has transferred energy to the surroundings by performing work. This results in a decrease in the internal energy of the gas because it has lost some of its energy to the surroundings.

Therefore, we can assume that the temperature of the gas has decreased because the internal energy of the gas is proportional to its temperature. This assumption is based on the ideal gas law, which states that the pressure, volume, and temperature of an ideal gas are related. If the pressure and volume of the gas remain constant, a decrease in the temperature of the gas will result in a decrease in its internal energy.

In summary, if an ideal gas does positive work on its surroundings, we can assume that the gas has undergone a decrease in its internal energy and its temperature has decreased.

Explanation: