Question

The amount of solar power reaching the atmosphere on an area equivalent to the area of a soccer field, 73meters × 100 meters, is about:(Hint: The solar constant is about 1,368 W/m^2)A. 5.3 WB. 1.368 × 10^3 WC. 10 × 10^6 WD. 7.3 × 10^7 W

Answer 1

C. 10.0 x 10^6

EXPLANATION :

The amount of solar power is equivalent to the area of the field.

The area of the field is :

`73m*100m=7300m^2`

Multiply this area by the solar constant :

`7300\cancel{m^2}*\frac{1368W}{\cancel{m^2}}=9,986,400\quad W`

When written in scientific notation :

`\begin{gathered} 9986400\rightarrow9.99*10^6 \\ or \\ 10.0*10^6\quad W \end{gathered}`