An electric motor rotating a workshop grinding wheel at a rate of 153 rev/min is switched off. Assume constant angular deceleration of magnitude 1.93 rad/s 2 . Through how many revolutions does the wheel turn before it finally comes to rest? Answer in units of rev.

An input force of 7 n is applied to a machine with a mechanical advantage of 1.75. what is the maximum the machine could lift? 12.25 n7n7.25 n26.2 n

Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.

Which two particles are found in the center of an atom