How much time is required for an elevator to lift a 2000 kg load up 28 m from the ground level, if the motor can produce 13 kW of power?

Which boundary is associated with the building of the himalaya mountains? convergent transform divergent hot spot

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.