If a balloon is heated, what happens to the volume of the air in the balloon if the pressure is constant? a it decreases. b it increases. c it stays the same. d the change cannot be predicted.

True or false an objects weight is less on the moon than on earth. on the moon, the objects mass decreases

What kind of pressure are expressed in inches of water column?

A=vf-vi/t find Vf find t

An object such as a hammer weights less on the moon than on earth. this is because the moon has a

A fire engine is rapidly approaching the corner. Explain what happens to the frequency of the sound wave as the fire engine draws closer. What do you hear?

You are operating a powerboat at night. You see green and white lights on another boat. What should you do?

How does Newton's second law apply to an "Egg Drop" experiment?

A 4.0-n puck is traveling at 3.0 m/s. it strikes an 8.0-n puck, which is stationary. the two pucks stick together. their common final speed is:

What career has to do with one of these listed ... fossil fuels, nuclear energy, biomass, hydropower, solar energy, geothermal energy, or wind energy.

An object is suspended from the ceiling with two wires that make an angle of 40° with the ceiling. The weight of the body is 150 N. What is the tension in each wire? 41.6 newtons 82.3 newtons 150 newtons 117 newtons