What is true about x-rays and microwaves?

a. x-rays have greater speed than microwaves.
b. x-rays have greater amplitude than microwaves.
c. x-rays have greater frequency than microwaves.
d. x-rays have greater wavelength than microwaves.

What is the measure of a change in an objects velocity?

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)