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grandymaker [24]
3 years ago
7

What is a pulley system?

Physics
1 answer:
goldenfox [79]3 years ago
3 0

A device consisting of a wheel over which rope or chain is pulled in order to lift a heavy object.

Examples- Elevators use multiple pulleys in order to function. A cargo lift system that allows for items to be hoisted to higher floors is a pulley system

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Svetlanka [38]

Answer:

C) According to the second law of thermodynamics, not all energy from the burnt fuel is used to do work on the piston. It also produces heat which warms other parts of the car.  

Explanation:

A) According to the fourth law of thermodynamics, the temperature of the other parts of the car increases due to the coolant used for the engine.  

B) According to the first law of thermodynamics, the hood of the car heats up using heat from the surroundings in-order to achieve thermal equilibrium with the engine.  

C) According to the second law of thermodynamics, not all energy from the burnt fuel is used to do work on the piston. It also produces heat which warms other parts of the car.  

D) According to the third law of thermodynamics, the increase in the velocity of the car changes the entropy of the tires. To balance this change, the temperature of the other parts is increased.

6 0
3 years ago
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PolarNik [594]

The physical activity that a global positioning system resource can help me with is : ( A )  Hiking

<h3>Function of Global positioning system ( GPS ) </h3>

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4 0
1 year ago
How many million kilometers is one astronomical unit.
Andrews [41]

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150 million kilometres

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6 0
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A bike travels 4 miles in half an hour at what speed
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