An ideal gas is compressed in a well-insulated chamber using a well-insulated piston. This process is
A) isochoric.
B) isothermal.
C) adiabatic.
D) isobaric.
Question 2
An astronaut is in equilibrium when he is positioned 140 km from the center of asteroid X and 581 km from the center of asteroid Y, along the straight line joining the centers of the asteroids. What is the ratio of the masses X/Y of the asteroids?
A) 0.0581
B) 17.2
C) 0.241
D) 4.15