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Reptile [31]
2 years ago
5

A motor lifts a 500kg elevator a height of 100 m at a constant speed in 50 secs. How much power did the motor supply

Physics
1 answer:
MA_775_DIABLO [31]2 years ago
3 0

Answer:

9,800 watts

Explanation:

The first step is to calculate the force

F= mg

= 500 × 9.8

= 4,900 N

The next step is to calculate the work done

= 4,900 × 100

= 490,000 joules

Therefore the power can be calculated as follows

Power= work done /time

= 490,000/50

= 9,800 watts

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Explanation:

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3 years ago
When attempting to determine the coefficient of kinetic friction, why is it necessary to move the block with constant velocity
Readme [11.4K]

Answer:

Explanation:

In order to measure the coefficient of friction , we apply external force to move the body . When external force comes in motion , we adjust the external force so that it moves with zero acceleration or uniform velocity . In this case external force becomes equal to kinetic frictional force and then net force becomes zero because

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4 0
2 years ago
`i have a sealed cylinder sitting in my lab that contains 1,000.0 ml of gas. if i compress the cylinder and change the volume to
marin [14]
Because the temperature remains constant, we can apply Boyle's Law which states that 
pV = constant
where
p = pressure
V = volume

Define the two states of the gas.

State 1
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State 2
Pressure = p₂
Volume = 500 ml

Apply Boyle's law.
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By halving the volume, the pressure doubles.

Answer:
The pressure increases by a factor of 2.

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How are mountain ecosystems different from other ecosystems?
Andreyy89

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They host three or more distinct ecosystems at different elevations.

Explanation:

I checked it, and its right.

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