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vova2212 [387]
2 years ago
13

a 2.5 kg rock is dropped off a 32 m cliff and hits a spring, compressing it 57cm. what is the spring constant

Physics
2 answers:
Rama09 [41]2 years ago
4 0

2.5 kg because you cant change the weight of the rock

Mila [183]2 years ago
3 0

The answer is 4,800N/m

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7. A stream of water strikes a stationary turbine blade horizontally, as the drawing illustrates. The oncoming water stream has
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Answer:

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Explanation:

Given that,

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Final speed of the outgoing water stream, v = -16 m/s

We need to find the magnitude of the average force exerted on the water by the blade. It can be calculated using second law of motion as :

F=\dfrac{\Delta P}{\Delta t}

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2 years ago
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bagirrra123 [75]

Answer:

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Therefore, an object that is negatively charged has more electrons than protons.  An object that is not charged has the same number of electrons than protons. An object that is positively charged has fewer electrons than protons.

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