a body of mass of 0.5kg tied to string is whirled in vertical circle making 2revolution/second. if the radius of circle is 1.2metre then. what is the tension in the string when the body is at the top of the circle.​

Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way