Achild releases a helium-filled party balloon. it is filled with low-quality helium and one must make a small allowance for the weight of the balloon, so it's overall specific gravity compared to ambient air is 0.15. its initial acceleration opposite to gravity starting from rest is about: (hint: since the body is starting from rest, you can ignore drag to get the initial acceleration, but you must include buoyancy forces) a. -1 g b. -17/13 gc. -25/13 g

Most leaks in reciprocating air compressors can be detected and minimized by: (clo4) a)-detecting leakage areas using ultrasonic acoustic detector. b)-tightening joints and connections c)-replacing faulty equipment d)-all of the given options

What is the main objective of using reheat rankine cycle?

Acarnot refrigerator operates in a room in which the temperature is 21°c and of power when operating. if the food compartment of the refrigerator is consumes 3 kw to be maintained at 2°c, determine (a) the coefficient of performance of the cycle and (b) the rate of heat removal from the food compartment. refrigerator cycle that has a higher coefficient of performance than that of the discussed (e) is it possible to develop a carn ot refrigerator, operating between the same temperature limits? explain