A 7.55 X10^ 13 kg comet orbits the sun with a speed of 0.173 km/s. If the centripetal force on a comet is 505 N, how far is it from sun?

John throws .4 kg ball with velocity of 18 m/s. hits .2 kg bottle and bottle flies 25 m/s. how fast is ball traveling after hitting the bottle?

2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.

In a good thermo flask the main cause of heat loss is