The speed of sound through liquid glycerol is about 1900 m/s. Which of the following could be the speed of sound through solid steel? A.

150 m/s

B.

730 m/s

C.

1900 m/s

D.
5950 m/s

Phase changes are chemical changes. true or false

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.

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?