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Lostsunrise [7]
4 years ago
13

What is the Kinetic Energy of a tennis ball after 40.0cm of freefall?

Physics
1 answer:
OlgaM077 [116]4 years ago
3 0
The kinetic energy is the same as the potential energy of raising it 40cm (0.4m). That's mgh where m is mass of ball. Its then 3.924*m, whatever m is equal to in kg.
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Ill mark as brainliest.
rewona [7]

Answer: 75V

Explanation:

Given that,

total resistance (Rtotal) = 150Ω

Current (I) = 0.5A

Change in electric potential (V) = ?

Recall that potential difference is the product of amount of current and the amount of resistance in the circuit. And its unit is volts.

So, apply the formula V = I x Rtotal

V = 0.5A x 150Ω

V = 75V

Thus, the change in electric potential across the circuit is 75 Volts

8 0
3 years ago
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Answer:

A) 1.5 v

B) Top plate is at higher voltage than the bottom plate

Explanation:

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potential at lower plate = 0.0 V

hence potential difference = 1.5 V

b ) The top plate is always connected to the positive terminal of the DC source ( which is at a higher potential )while the bottom plate is connected to the negative terminal of the DC source ( which is at a lower potential )

hence the Top plate is at higher voltage than the bottom plate

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18. If the distance from a converging lens to the object is less than the focal length of the lens, the image will be _______ th
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Answer:

29.8 %

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