An ideal gas is enclosed in a constant volume container at a pressure of 0.7 atm and an initial temperature of 100 °C. The pressure is then decreased to 0.512 atm
with a temperature of 37 °C. If the pressure is then decreased again to 0.34 atm. What is the
final temperature?

Abody of weight 60 kg is standing in a lift the lift going upward with a uniform velocity of 4.9 metre per second slows down and stops in two seconds then apparent weight of the body during the slow down process is

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative