A.)The Sun on the Earth
B.)The Earth on the Moon
C.)The Earth on you.
D.)A proton on the Earth's surface.
E.)A proton on another proton located 0.1 cm away.
Which, if any, of the these numbers would you consider to be so small as never have important physical effects?
Reading: C&O, Ch 3, Croswell, Ch 3&4
Of the energy striking the Earth, a fraction a, called the albedo, is reflected back to space by clouds, water, etc. So, if P, above, is the total solar power received by Earth, then P * (1-a) is the energy absorbed by the Earth each second.
B.) Approximating Earth's albedo as: a = 0.3, present an expression for the total solar energy absorbed by Earth per second. Evaluate units of Watts.