2. The average power of a cannon is 1670 Watts. If it shoots a human cannonball down a barrel in 10 sec, then how much work is done by the cannon?

9.98 kg of r-134a at 300 kpa fills a rigid container whose volume is 14 l. determine the temperature and total enthalpy in the container. the container is now heated until the pressure is 600 kpa. determine the temperature and total enthalpy when the heating is completed. use data from the steam tables.