VA 0.4 kg ball traveling with the speed of 15 m s' strikes a rigid wall and rebounds elastically. If the ball is in contact with the wall for 0.045 s, what
is (a) the momentum imparted to the wall and (b) the average force
exerted on the wall?

When you turn on a battery-operated device, an electrical circuit is

It can take some of those large , industrial vehicles up to feet to stop when traveling only 60 mph, and therefore , you shoukd be mindful to not be jn the traffic right in front of them a. 100 feet b. 200 feet c. 335 feet d. 425 feet

Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)