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masha68 [24]
3 years ago
8

Calculate the potential energy stored in an object of mass 50 kg at a height of 20 m from the

Physics
1 answer:
sasho [114]3 years ago
5 0

Answer:

potential energy=mgh

=50×10×20

=10000 J

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If the ship speed is doubled, then the power developed is 8 times the initial value.

Explanation:

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An archer shoots an arrow with a mass of 45.0 grams from bow pulled
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Answer:

The force the archer need to pull in order to achieve the height is approximately 101.8 N

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By energy conservation principle, puling an elastic bow with a force, for a given distance, performs work which is converted to the potential energy of the arrow at height

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The distance the elastic bow is pulled, d = 65.0 cm = 0.65 m

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Let 'F', represent the force the archer need to pull in order to achieve the height

Work done, W = Force × Distance moved in the direction of the force

Therefore;

The work done in pulling the arrow, W = F × d

By energy conservation, we have;

The work done in pulling the arrow, W = The potential energy gained by the arrow, P.E.

W = P.E.

The potential energy gained by the arrow, P.E. = m·g·h

Where;

m = The mass of the arrow

g = The acceleration due to gravity = 9.8 m/s²

h = The height the arrow reaches

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W = F × d = F × 0.065 m

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Answer:

hope this helps you

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bye bye

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Dr. Smith is conducting an experiment to determine if paintings of landscapes produce more peaceful feelings than abstract paint
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It should be noted that a hypothesis simply means the proposed explanation made on the basis of limited evidence.

From the information, Smith is conducting an experiment to determine if paintings of landscapes produce more peaceful feelings than abstract paintings.

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