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3 years ago

In gases heat is transferred by?

Physics

1 answer:

Sedaia [141]3 years ago

4 0

Answer:

Convection

Convection transfers heat energy through gases and liquids. As air is heated, the particles gain heat energy allowing them to move faster and further apart, carrying the heat energy with them. Warm air is less dense than cold air and will rise.

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• Give an example of a scientific theory that has changed. Did it become a scientific law, become obsolete, or become part of a

Agata [3.3K]

An example would be <span>Fleischmann-Pons's nuclear fusion theory, this theory tested the effects of what is known as "Cold Fusion", but when other scientists performed similar experiments they didn't achieve similar results, therefore making the theory obsolete.</span>

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3 years ago

if the motor in a geared appliance has a rated speed of 3600 rpm and a gear ratio of 6 to 1 the driven gear will turn at speed o

sergeinik [125]

3600/6/1= 600rpm. Higher torque, lower speed

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3 years ago

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Recall that impulse = momentum (FAt = Ap and that Ap is just mx v). How long (time) must a group of people pull with a force of

elixir [45]

The time taken for the group of people to pull the car, giving it a velocity of 1.5 m/s is 3.75 s

Momentum is simply defined as the product of mass and velocity i.e

Momentum = mass × velocity

To answer the question given, we'll begin by calculating the change in momentum. This can be obtained as follow:

Mass = 1500 Kg

Initial velocity (u) = 0 m/s

Final velocity (v) = 1.5 m/s

<h3>Change in momentum =? </h3>

Change in momentum = m(v – u)

Change in momentum = 1500 (1.5 – 0)

Change in momentum = 1500 × 1.5

<h3>Change in momentum = 2250 Kg•m/s</h3>

Finally, we shall determine the time

Change in momentum = 2250 Kg•m/s

Force (F) = 600 N

Impulse = Ft = change in momentum

FT = change in momentum

600 × t = 2250

Divide both side by 600

t = 2250 / 600

Thus, the time required is 3.75 s

Learn more on momentum and impulse: brainly.com/question/14486244

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2 years ago

What is the speed of an object in its rest frame?

Brilliant_brown [7]

Answer:

A. 0 m/s

Explanation:

The rest frame of an object is defined as the reference frame that is moving together with the object, so at the same speed of the object.

In other words, the rest frame of an object is defined as the reference frame in which the object is at rest, which means that is the reference frame in which the object has speed equal to zero (0 m/s).

Therefore, the correct answer is

A. 0 m/s

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3 years ago

What happens to electron flow with a conductor of the voltage source is removed?

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The electrons stop flowing

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3 years ago

In gases heat is transferred by?​

In gases heat is transferred by?