The sun radiates energy into space at the rate of $3.9 \times 10^{26}$ joules per second. How many joules are emitted in three weeks?
A) $7.1 \times 10^{32}$ joules
B) $7.1 \times 10^{53}$ joules
C) $7.1 \times 10^{26}$ joules
D) $7.1 \times 10^{59}$ joules

Question

Quizplus · Accepted Answer

The total energy emitted in three weeks can be calculated by multiplying the rate of energy emission per second by the number of seconds in three weeks. There are $3 \times 7 \times 24 \times 60 \times 60 = 1,814,400$ seconds in three weeks. Therefore, the total energy emitted is $3.9 \times 10^{26} \times 1,814,400 = 7.1 \times 10^{32}$ joules.

The Sun Radiates Energy into Space at the Rate Of 3.9