A group of students is attempting to determine the density of a lead weight. Their measurements are 12 7 g/cm3 115 g/cm3 and 10.9 g/cm3. If the true density of lead is 11.3 g/cm3. what is their percent error?

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)

Ais not a mixture. colloid compound suspension solution

Acar is traveling 35 mph on a smooth surface . if a balanced force is applied to the car what happens?