A particle undergoes two displacements. The first has a magnitude of 199 cm and makes an angle of 149 degrees with a positive x axis. The resultant displacement has a magnitude of 115 cm and is directed at an angle of 32.1 degrees to the positive x axis. Find the magnitude of the second displacement. Answer in units of cm.

This is how zirconium appears in the periodic table. rounded to the nearest whole number, how many electrons are in an atom of zirconium?

Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg

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)