HEAT AND WORK

Which of the following equations is the equation for calculating the work done by a gas in a piston?

• W=Fd

• W=PΔV

• ΔV=Ad

• A=πr²

An inflated balloon is placed in a tub of hot water. As the balloon stays submerged in the water, the balloon expands. What can be said of the work that was done?

• It is positive and the water did work on the balloon

• It is negative and the balloon did work on the water

• It is positive and the the balloon did work on the water

• It is negative and the water did work on the balloon

Tags

NGSS.HS-PS3-4

NGSS.HS-PS3-2

0.605 m³ of gas is inside of a piston that is stuck in place. A pressure of 1.50 x 10⁴ Pa is applied to the piston and the piston doesn't budge. How much work was done?

• 9075 J

• 24793 J

• 0 J

• 4.03 x 10^-5 J

In a refrigerator, the work (electricity) applied to it is balanced by the heat that is released from the refrigerator. This balance of work and heat results in

• A change in temperature inside of the refrigerator

• No change in the internal energy of the refrigerator

• No energy being transferred

• Nothing

Tags

NGSS.HS-PS3-4

Gas is compressed adiabatically in a cylinder with a cross-sectional area of 0.5 m² by a piston moving 0.1 m as it does 150 J of work. How much pressure does the gas exert at the end of the piston's travel?

• 7.5 Pa

• 750 Pa

• 1500 Pa

• 3000 Pa

A gas expands and does 215 J of work on a piston. The gas exerts a pressure of 1230 Pa on the piston. What is the change in volume of the gas?

• 2.64 x 10⁵ m³

• 5.72 m³

• 0.175 m³

• 12.1 m³

Tags

NGSS.HS-PS2-1

Heat flows spontaneously from hot objects to

• hot objects.

• cold objects.

Tags

NGSS.HS-PS3-4

Temperature is related to the average kinetic energy of the particles in an object due to their random motions through space.

• True

• False

Tags

NGSS.HS-PS3-2

Temperature is a measure of how

• the particles are stationary.

• energy remains the same.

• hot or cold an object is compared to a reference point.

Tags

NGSS.MS-PS3-4

The energy stored in gasoline is

• chemical energy.

• electromagnetic energy.

• mechanical energy.

• nuclear energy.

Tags

NGSS.HS-PS1-4