A baseball is thrown horizontally off a very tall building with an initial velocity of 17.5 m/s find the balls horizontal and vertical positions and velocities after 2.4 seconds have passed

What are similarities and differences between refraction, reflection, diffraction and absorption?

Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?