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attashe74 [19]
3 years ago
14

You drop a rock off the top of a 100 m tall building. How long does it take to hit the ground?

Physics
1 answer:
Vitek1552 [10]3 years ago
4 0
It would mostly depend on its weight
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Describe the differences and similarities between an electromotor and a generator.
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Differences:

An electrical motor converts electrical energy into mechanical energy,where as a generator converts mechanical energy into electrical energy.

The principle of a electric motor if there is a change of the magnetic field across a conductor  electrons are forced to move in a direction perpendicular to the direction of the magnetic field,where as in a generator if a charge is moving in a magnetic field, a force acts on the charge in a direction perpendicular to both the velocity of the charge and the magnetic field.

similarities:

Both electric motor and generator work on the magnetic effects of electric current.

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3 years ago
Suppose you apply a force of 75 N to a 25-kg object. What will the acceleration of the object b? (Remember a=F/m)
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I would choose the option B.

F = ma

a = 75 / 25 = 3 m/s^2

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2 years ago
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