Consider a cloudless day on which the sun shines down across the United States. If 2073 kJ of energy reaches a square meter ( m

Question

3 years ago

14

2 ) of the United States in one hour, how much total solar energy reaches the entire United States per hour

1 answer:

Mnenie [13.5K] · Answer 1 · 2022-01-16T01:44:08+03:00

The total amount of energy per hour is $2.039\cdot 10^{16} kJ$

Explanation:

In this problem we are told that the amount of energy reaching a square meter in the United States per hour is

$E_1 = 2073 kJ$

The total surface area of the United States is

$A=9.834\cdot 10^6 km^2$

And converting into squared metres,

$A=9.834\cdot 10^6 \cdot 10^6 = 9.834\cdot 10^{12} m^2$

Therefore, the total energy reaching the entire United States per hour is given by:

$E=AE_1 = (9.834\cdot 10^{12})(2073)=2.039\cdot 10^{16} kJ$

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