A student uses a projectile launcher with a spring constant of 180 N/m to launch a marble with a normal force of 0.9 N vertically into the air. If the spring is initially compressed 0.03 m, what is the maximum height the marble will reach?

Argon, neon, and xenon are examples of

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)

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of