Question

On a clear day, the total intensity of solar radiation incident at the Earth's surface is approximately 1000W/m2 Part a Assume our atmosphere absorbs 23% of the incoming solar radiation, and that the distance from the Earth to the Sun is 1.5 x 1011m. From this information, what do you expect is the total power output of the sun? [IMPORTANT: to express a number like 2 x 1021, type 2e21] Enter answer here O of 4 attempts used CHECK ANSWER Part b How much solar energy do you absorb after sunbathing for an hour? Assume your skin has an exposed surface area of approximately 1.2m2, and you absorb 50% of the incident energy. Give your answer in megajoules Enter answer here e MJ O of 4 attempts used CHECK ANSWER Part c What is the maximum magnetic field due to the solar radiation at the Earth's surface? Give your answer in units of micro-Tesla

Answer 1