Question

it is estimated that per minute, each `cm^2` of earth recives about 2 calories of heat energy from the sun. This constant is called solar constant S. Express solar constant in SI units.

Answer 1

`S = (2 cals.)/(min. cm^2) = (2xx4.2 "joule")/(60sxx10^(-4)m^2)`
`=1.4xx10^3 W//m^2`