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3 years ago

In which situation is a person doing work on an object?

Physics

2 answers:

Marianna [84]3 years ago

6 0

Answer : When a person applies force and covers distance then the person is doing work on an object.

inna [77]3 years ago

3 0

Answer :A human is working their muscles to do whatever activity they are doing.

Explanation:

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The gravity is pulling the diver downwards but the rotation of the body means gravity cant pull him down as quickly

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3 years ago

The diagram shows two different types of fossils from the

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3 years ago

What is the magnitude of the electric force between a proton and an electron when they are at a distance of 4.09 angstrom from e

Zinaida [17]

Answer:

$F=1.38*10^{-9}N$

Explanation:

According to Coulomb's law, the magnitude of the electric force between two point charges is directly proportional to the product of the magnitude of both charges and inversely proportional to the square of the distance that separates them:

$F=\frac{kq_1q_2}{d^2}$

Here k is the Coulomb constant. In this case, we have $q_1=-e$ , $q_2=e$ and $d=4.09*10^-10m$ . Replacing the values:

$F=\frac{8.99*10^{9}\frac{N\cdot m^2}{C^2}(-1.6*10^{-19}C)(1.6*10^{-19}C)}{(4.09*10^{-10})^2}\\F=-1.38*10^{-9}N$

The negative sign indicates that it is an attractive force. So, the magnitude of the electric force is:

$F=1.38*10^{-9}N$

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3 years ago

While spending the weekend in your cabin, you burn wood in your pot-bellied stove to heat a kettle of water for tea.

Olegator [25]

Answer: 1 = Heat

2=gas

3=it gets hot enough to boil because the metal conducts the heat into the water to heat it up and eventually boil.

Explanation: its common sense

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3 years ago

Conversion of one form of energy into another form is

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Answer: energy transformation

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2 years ago

Read 2 more answers