A train travelling at 20 m/s has 2 000 000 J of kinetic energy. What is the mass of
the train?

Argon is adiabatically compressed from an initial volume of 16 liters to a final volume of 2 liters. by what factor do the following quantities change? do they increase or decrease? (a) the rms speed (b) the thermal energy of the gas (c) the molar specific heat cv (d) the pressure

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)

Atomic nuclei of almost all elements consist of