3 years ago

What happens to a sheet of copper as kinetic energy of copper molecules decrease

Physics

1 answer:

liberstina [14]3 years ago

8 0

First is melts then it expands next it gets cooler Finally it gains ener. Hope this helps you out.

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As the distance between two charged objects increases, the strength of the electrical force between the objects

GuDViN [60]

Answer:

I believe the answer is It increases

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3 years ago

An object moves in a circle with a period of 0.025 hours. What is its frequency in Hz?

Sedaia [141]

Answer:

40 Hz

Explanation:

f = 1/T = 1 / 0.025 = 40 Hz

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2 years ago

Assuming 84.0% efficiency for the conversion of electrical power by the motor, what current must the 13.0-V batteries of a 716 k

tino4ka555 [31]

Answer:

$\mathbf{ current(I) =1766.67 \ A}$

Explanation:

Given that:

The air resistance and friction = 700 N

The gravity caused force = 716 × 9.8 = 7016.8

Total force = (7016.8 + 700) N

Total force = 7716.8 N

∴

$13 \times current(I) \times 0.84 = \dfrac{7716.8 \times 300}{2 \times 60}$

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8 0

2 years ago

Please help!

Yanka [14]

Answer:

V=3.57 × 10^6 m/s

hope it is helpful..

7 0

2 years ago

A boy on rollerskates is travelling along at 8 m/s. He has a mass of 60 kg and is carrying his

Brrunno [24]

Answer:

6m/s

Explanation:

the original momentum = mass x velocity = 8x (60+10) = 560

momentum after = mass x velocity of the school bag + mass x velocity of the boy = 10x20 + 60x A

200+60A = 560

A=6

5 0

3 years ago