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svet-max [94.6K]
3 years ago
15

How much work is done in lifting a 6 kg object from the ground to a height of 4m?

Physics
1 answer:
Gekata [30.6K]3 years ago
8 0
W=mgh W=(6)(9.8)(4) W= 235.2J
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A spring with spring constant 450 N/m is stretched by 12 cm. What distance is required to double the amount of potential energy
snow_lady [41]

Answer:

<em> The distance required = 16.97 cm</em>

Explanation:

Hook's Law

From Hook's law, the potential energy stored in a stretched spring

E = 1/2ke² ......................... Equation 1

making e the subject of the equation,

e = √(2E/k)........................ Equation 2

Where E = potential Energy of the stretched spring, k = elastic constant of the spring, e = extension.

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E = 6.48 J.

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e = √0.0288

e = 0.1697 m

<em>e = 16.97 cm</em>

<em>Thus the distance required = 16.97 cm</em>

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Warm, moist air increasing ocean temp
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kifflom [539]

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The given statement is false.

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