A round pipe of varying diameter carries petroleum from a wellhead to a refinery. At the wellhead, the pipe's diameter is 54.7 cm and the flow speed of the petroleum is 13.9 m/s. At the refinery, the petroleum flows at 6.45 m/s. What is the volume flow rate of the petroleum along the pipe, and what is the pipe's diameter at the refinery

The answer is a it is actually

1) when you rub your hands together quickly, the kinetic energy is converted to mechanical energy.2) thermal energy from the sun travels to earth as infrared waves.3) energy is transferred through the matter of space by electromagnetic waves. 4) when a match is burned, chemical potential energy is converted to thermal and radiant energy. 5) seismicwaves are caused by back and forth movement , or vibration, of an object. 6) mechanicalenergy in an engine changes thermal energy into kinetic energy to make a car move.

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