(WILL MARK BRAINLIAST)( 1 answer question.. look the photo) As the cars come closer together, the amount of potential energy in the system:

-Increases

-Decreases

-Stays the same

1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?

He latent heat of vaporization for ethyl alcohol is 854 j/g. the amount of energy, rounded to the nearest whole number, needed to change 5.20 grams of ethyl alcohol from a liquid to a gas is