Atraveling periodic wave passes a point of observation. at this point, the time between successive crests is 0.2s. what can you say about this wave?

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

What is a possible result of higher air temperature caused by global warming

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.