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Annette [7]
4 years ago
14

Work & Power Problems

Physics
1 answer:
Artyom0805 [142]4 years ago
6 0

Answer:

1. Unit for work is measured in Joules.

Formula for work is power * time taken

2 The unit for force is Newton

A work done in lifting a jar of water

3. The unit for measuring power is Joules.

The formula for measuring power is work done/time taken

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In which of the following situations would there be initial energy in the system?
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Answer:

A spring is compressed and held at compression by a person before releasing it

Explanation:

All the other answers are showing things that are at rest and have no energy starting nor going through them. This answer show how the energy is starting and being released.

8 0
3 years ago
2. Without changing the mass or height, what else do you think you could do to design a system in which GPE and KE values are mo
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3 years ago
I forgot to post the pic<br>But please help<br>just need answers​
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1.127,56,000m

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3 years ago
Use evidence to explain why glass refracted more light than air or water
agasfer [191]

Explanation:

The refraction is the change in the direction of light while travelling from the one medium to another due to having different speeds in different mediums.

To determine how much light gets refracted, it depends on the density of substance and the wavelength and the angle at which light enters the substance.

Light travels more slowly in denser medium than the rarer medium. The refractive index of glass is more than water or air. Light gets refracted more in this. When the light travels from rarer to denser then the light will get bend towards the normal. When the light travels from denser to rarer then the light will get bend away from the normal.      

Glass is more denser than air or water. Water is more denser than the air. When light travels from air to glass then the light gets bends towards the normal. When the light travels from glass to the air then light gets bends away from the normal.

Therefore, the light gets refracted more in the glass than air to water.

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4 years ago
Ello<br><br>NY1 ZINDA HERE xD<br><br>WHAT IS MOLE ??​
Julli [10]

Answer:

yes I am

how are you

have a great day

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3 years ago
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