2. When the pump removed the air in
the bell, the balloon
contracted
expanded

Answers

Answer 1

Answer:

When the pump removed the air in the bell, the balloon expanded.

Option: B

Explanation:

In order to construct our own environment in the glass jar known as bell jar system, which can be used to explore and consider our larger environment on Earths, for an instance. Here a glass jar that hinges on an airtight rubber basis i.e seals appropriately. At the top of the jar, a bung is connected to it which passed via a metal tube. It has an adjacent flexible tube that goes to a hand vacuum pump and the best hand-powered pump was made with a wine preserver.

When the pump extracts the air from the bell jar, the pressure inside the balloon naturally decreases. The balloon usually has a air pressure around it, which restricts its size, but when this air is extracted and the pressure around it decreases the gas in the balloon will expand and the balloon seems to be inflating. When you release the air back into the bell jar, it will once again compress back to its actual size.

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Answers

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what did u get one that baby

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Answers

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If the power rating on a motor is 10W and 500J of energy is used to move a 20N object, how long is the motor used for?

Answers

The power rating on the motor is the maximum power it's ABLE to deliver. It can run with LESS power output than the rating, but if you try to run it with MORE than it's rated, the motor will overheat and eventually burn out.

" 10 watts " means " 10 Joules of enrgy per second ".

If the motor is operated at its full maximum rated capacity, then

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Answers

There you go again. Newton's 3rd Law says "for every action there is an EQUAL OPPOSITE reaction.".

EQUALand OPPOSITE

If THIS MUCH force pushes the bullet THAT way, then THE SAME amount of force pushes the rifle THIS way.

The bullet pushes backward on the rifle with the same amount of force as the rifle exerts on the bullet.

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Answers

The type of reaction is combustion

I'm probably wrong, but friction?

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