Question

2. The Sun delivers roughly 1 kW m
of power to the
Earth's surface. A parabolic mirror with a 1 m radius is used
to focus this energy onto a beaker containing 1 L of water.
Estimate the time taken by the mirror to raise the temperature of the
water by 50°C, assuming the specific heat capacity of water
to be 4200 J K-1 kg and ignoring energy
losses to the surroundings.​

Answer 1

Answer:

Ok

Explanation:

The Sun delivers roughly 1 kW m−2 of power to the Earth's surface. A parabolic mirror with a 1 m radius is used to focus this energy onto a beaker containing 1 L of water. Estimate the time taken by the mirror to raise the temperature of the water by 50∘C, assuming the specific heat capacity of water to be 4200 J K−1 kg−1 and ignoring energy losses to the surroundings