6. A friend borrows your red “Ferrari Spaceship Model X-19” capable of travelling at 0.85c. The Ferrari is measured to be 5.6 m high and 18 m long in a stationary reference frame. a) Your friend has been gone for 2.0 h your time. How much time does he believe
has elapsed? (1 mark)

Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s

Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.

This is the number of complete movements of a wave per second.