The speed of the block after it slides 3 m is determined as -15.64 m/s.
What is the speed of the block?The speed of the block is calculated by applying the following the law of conservation of energy.
ΔK.E = W
where;
ΔK.E is change in kinetic energyW is the work done by force of friction¹/₂m(v₂ - v₁) = -μfd
where;
f is force of frictionμ is coefficient of frictiond is the distance traveled¹/₂m(v₂ - v₁) = -μmgd
v₂ - v₁ = -2μgd
v₂ = v₁ -2μgd
v₂ = 2 - (2 x 0.3 x 9.8 x 3)
v₂ = -15.64 m/s
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What is not required of fire wardens for evacuating disabled persons from high-rise floors?
A. keep updated list of persons needing assistance
B. arrange quick use by elevators
C. notify Fire Saftey Director when assistance is needed
Arranging quick use of elevators is not a requirement of Fire Wardens for evacuating disabled persons from high-rise floors. Thus, its B.
In fact, elevators should not be used during a fire emergency, especially in high-rise buildings, as they may malfunction or become a trap for occupants. Instead, Fire Wardens should assist disabled persons in using the designated evacuation routes and stairwells.
Fire Wardens should maintain an updated list of persons needing assistance, including their location and specific needs, to ensure that they are identified and assisted during an emergency.
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What engine parts are continually anti iced
The engine parts that are most commonly anti-iced include:
- Engine inlets
- Fan blades
- Engine cowls
- Thrust reversers.
We have,
In aviation, anti-icing is a critical safety procedure used to prevent ice formation on aircraft surfaces and components, including the engine parts.
The engine parts that are continually anti-iced will depend on the specific aircraft type and engine design.
However, in general, the engine parts that are most commonly anti-iced include:
Engine inlets: These are the openings at the front of the engine that allow air to enter the engine for combustion. Inlet anti-icing systems typically use hot air from the engine or bleed air from the compressor section to prevent ice formation.
Fan blades: The fan blades are located in the front of the engine and are responsible for drawing air into the engine. Anti-icing systems for fan blades may use a combination of hot air and electric heating elements to prevent ice buildup.
Engine cowls: The engine cowls are the outer coverings that surround the engine. Anti-icing systems for engine cowls may use hot air or electric heating elements to prevent ice buildup and ensure proper engine cooling.
Thrust reversers: Some engines are equipped with thrust reversers, which are used to redirect engine thrust forward during landing to help slow down the aircraft. Anti-icing systems for thrust reversers may use hot air or electric heating elements to prevent ice buildup and ensure proper operation.
Thus,
The engine parts that are most commonly anti-iced include:
- Engine inlets
- Fan blades
- Engine cowls
- Thrust reversers.
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05-003 - Definition of problem
In general, a problem can be defined as a situation where there is a discrepancy between the desired state and the actual state, and where a solution or course of action is required to bridge that gap. A problem can be anything from a simple task that needs to be completed, to a complex issue that requires extensive analysis and planning to resolve. The identification and resolution of problems is a key aspect of many fields, including business, engineering, medicine, and psychology, among others. Effective problem-solving skills are therefore highly valued and sought after in many industries.
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Some crawl space foundations are completely sealed without any vents becuase
Some crawl space foundations are completely sealed without any vents because it is believed to be more energy-efficient and helps prevent moisture from entering the crawl space. However, this can also lead to the buildup of harmful gases, such as radon, and make it difficult to regulate temperature and humidity levels.
What are crawl space foundations?
Crawl space foundations are a type of foundation commonly used in residential and small commercial construction. They are built by creating a shallow space between the ground and the bottom of the first floor of the building. This space is typically about two to four feet in height and is called a crawl space because it is only large enough for someone to crawl through.
The foundation walls of a crawl space are typically made of concrete or masonry, and they rest on footings that are placed below the frost line to prevent damage from soil movement. The floor of the crawl space may be a poured concrete slab or simply a dirt floor.
Crawl space foundations have several advantages over other types of foundations. They are typically less expensive to build than full basements or slab-on-grade foundations, and they provide easier access to plumbing and electrical systems that may need to be installed or repaired. Crawl spaces can also be used for storage in some cases.
Therefore, it is important to properly insulate and ventilate sealed crawl spaces to ensure proper air circulation and prevent potential health hazards. Additionally, proper drainage systems should be installed to prevent water buildup and damage to the foundation.
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