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2 years ago

A 6kg rock rolls down a hill with a momentum of 12kg m/s . Work out the velocity of the rock

Physics

2 answers:

Feliz [49]2 years ago

8 0

Answer:

Momentum= mass x velocity

So velocity= Momentum/mass= 12/6= 2m/s

Nat2105 [25]2 years ago

7 0

Answer:

if you need to get the work=force×displacement or if you need the velocity=displacement÷time taken

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2 years ago

A source charge of 5.0 µC generates an electric field of 3.93 × 105 at the location of a test charge. How far is the test charge

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Answer:

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3 years ago

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DaniilM [7]

Answer:

False

Explanation:

Convection currents do not produce heat. In fact, convection current are a method of transfer of heat, not of production. Convection occurs when there is a fluid which is heated from bottom, from an external source of heat (such as a pot of boiling water over a flame): the bottom part of the fluid becomes warmer, and so less dense than the colder part, therefore it starts moving up, and it is replaced by the colder parts of the fluid, which go down. Later, these colder parts become warmer, so they start going up, being replaced by new colder parts, etc... in a cycle. This is known as convection current, but it requires an external source of heat, it does not produce heat by itself.

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2 years ago

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If a car has a mass of 200 kilograms and produces a force of 500 N, how fast will the car accelerate?

san4es73 [151]

Answer:

Explanation:

F = ma

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2 years ago

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Stells [14]

Answer:

Explanation:

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2 years ago

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