A kettle contained 0.5 kg of water. The average heat absorbed by the water is 16 J/s in 25 minutes. Calculate:
(i) The amount of heat absorbed by the water.

(ii) The increase in temperature of water. [Specific heat capacity = 42 000 J/kg/C°)

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.