How much current will be required to produce a force of 0.82 N on a 7.5 cm length of wire at right angles to a 0.35-T field?

Steam enters an adiabatic diffuser at 150 kpa and 1208c with a velocity of 550 m/s. determine the minimum velocity that the steam can have at the outlet when the outlet pressure is 300 kpa.

Why do astronauts in the space shuttle weigh less?

What sort of waves exhibit the doppler effect?