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Eduardwww [97]
2 years ago
5

Spring stretches 14 cm when an object weighing 28 n is hung from it. what is the spring constant

Physics
1 answer:
daser333 [38]2 years ago
8 0
The answer is 200 N/m
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What best describes the dropping height of a ball that bounced back up to a height of 45 centimeters?
murzikaleks [220]

Answer:C:Less than 45 centimeters, as the ball transforms some of its potential energy into thermal energy and sound energy

Less than 45 centimeters, as the ball transforms some of its potential energy into thermal energy and sound energy.

Although the initial energy (potential energy is preserved), the energy of deformation as the ball strikes a surface creates energy dissipation in the form of frictional heat and audible sound energy.

Every time the ball bounces, its height will be less than its previous height.

Explanation:

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Usually the coefficient of friction remains unchanged

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