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azamat
3 years ago
14

1 poir

Physics
1 answer:
djverab [1.8K]3 years ago
4 0

Answer:

D) 735 J(oules)

Explanation:

Work is defined as force * distance

Force is defined as mass * acceleration

Given a mass of 15 kg and a gravitational acceleration of 9.8 m/s² since the box is being lifted up, the force being applied to the box is 15 kg * 9.8 m/s² = 147 N

Since the distance is 5 meters, the work done is 147 N * 5 m = 735 N/m = 735 J, making D the correct answer.

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A water balloon is hovering directly above the line join points ANB which are 4.6 km apart if the angles of elevation to the bal
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Answer:

Drawing the triangle:

H / x = tan 52.2 = 1.29

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H = 1.29 x

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Total base of triangle = 1.38 + 3.22 = 4.6

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H = 1.29 * 1.38 = 1.78 height of triangle

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