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beks73 [17]
2 years ago
7

Correctly round the following number to the whole number 2.35784

Physics
1 answer:
Elina [12.6K]2 years ago
8 0

Answer:2

Explanation:

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A car speeds up from 12.0 m/s to 16.0 m/s in 8.00s what is the acceleration
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If it requires 2.0 J of work to stretch a particular spring by 2.0 cm from its equilibrium length, how much more work will be re
valina [46]

Answer:

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Explanation:

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Work done, W = 2 J

A spring is stretched by 2.0 cm from its equilibrium length

We need to find how much more work will be required to stretch it an additional 4.0 cm.

Let k is the spring constant of the spring. When W = 2J, and x = 2 cm, then energy required to stretch the spring is :

U=\dfrac{1}{2}kx^2\\\\k=\dfrac{2U}{x^2}\\\\k=\dfrac{2(2)}{(0.02)^2}\\\\k=10000\ N/m

The energy required to stretch the spring from 2 cm to additional 4 cm i.e. 2+4= 6 cm.

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3 years ago
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