A copper block weighing 2 kg is dropped from a height of 20m. What is the rise in the temperature of the copper block after it hits the floor. The specific heat capacity of copper is 400 J/(kgC )

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.