At the surface of the Earth, the Sun delivers an estimated 1.43 kW/m^2 of energy. Suppose sunlight hits a 14.5 m by 34.5 m roof at an angle of 90.0°.
a) Estimate the total power incident on the roof. (in W)
A: 4.47x10^5 B: 5.23x10^5 C: 6.11x10^5 D: 7.15x10^5 E: 8.37x10^5 F: 9.79x10^5 G: 1.15x10^6 H: 1.34x10^6
b) Find the radiation pressure on the roof. (Assume the roof is black and totally absorbs the sunlight!) (in N/m/m)
A: 2.29x10^-6 B: 2.59x10^-6 C: 2.93x10^-6 D: 3.31x10^-6 E: 3.74x10^-6 F: 4.22x10^-6 G: 4.77x10^-6 H: 5.39x10^-6