Planets are constantly moving. in fact, the name planet means wanderer. what force(s) is responsible for the constant movement of the planets in our solar system?

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

Anybody wanna ? (picture included? )

If 2 moles of co_2 at 2l and 500k are expanded reversibly to 20l, more work can be obtained from an adiabatic process than from an isothermal process. is the above statement true or false?