If there are a boys pulling a rubber
with the same amount of force what will happen?

Can someone explain to me how to do this problem ?

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

Abag of potato chips contains 2.00 l of air when it is sealed at sea level at a pressure of 1.00 atm and a temperature of 20.0 deg c. what will be the volume of the air in the bag if you take it with you, still sealed, to the mountains where the temperature is 7.00 deg c and atmospheric pressure is 70.0 kpa? assume that the bag behaves like a balloon and that the air in the bag is in thermal equilibrium with the outside air.