Let 92.0 J of heat be added to a particular ideal gas. As a result, its volume changes from 70.0 cm3 to 196.0 cm3 while the pressure remains constant at 1.5 atm. By how much did the internal energy of the gas change?

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.