7. A piece of machinery with a moment of inertia of 2.6 kg mº rotates with a constant angular speed of 4.0 rad/s when a frictional torque of 0.56 m Nacts on it. What is the net torque acting
on the piece? (explain with a correct answer)

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Aforklift raises a 1,020 n crate 3.50 m up to a shelf. how much work is done by the forklift on the crate? the forklift does j of work on the crate.

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)