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Serga [27]
3 years ago
8

An electric current in a metal consists of moving

Physics
1 answer:
Alik [6]3 years ago
6 0
The answer would be (A) Protons
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what velocity must a 1340kg car have in order to havw the same momentum as a 2680 kg truck traveling at a velocity of 15m/s to t
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Hope i helped
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3 years ago
Which force is always pulling but never pushes and is directly influenced by mass
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Explain how wavelength and frequency are important in determining the type of light.
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3 years ago
The height of the empire state building is 318 m if a stone is dropped from the top of the building what is the stones velocity
lutik1710 [3]

79 m/s. A stone dropped from the top of the Empire State Building will have a velocity of 79 m/s just before it strikes the ground.

This problem is about free fall, to find the velocity of the stone before it strikes the ground we have to use the equation v_{f}^{2}=v_{0}^{2}+2gh, the initial velocity  of the stone is 0 m/s. Then:

v_{f}^{2}=2gh

v_{f}=\sqrt{ 2gh}

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v_{f}=\sqrt{ 2(9.8m/s^{2})(318.0m)}= 78.95 m/s

v_{f}≅ 79 m/s

4 0
2 years ago
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