The maximum range of a projectile is 2 over radical 3 times its actual range. What is the angle of projection for the actual range?

Which would not reduce the amount of green house gasses in the air

The two required components for a generator are

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.