The energy usage in the United States in 2010 was about 100 × 1018 J. This can be written as:
A) 100 million GJ
B) 1000 million GJ
C) 100 billion MJ
D) 100 trillion MJ

Question

Quizplus · Accepted Answer

100 trillion $\mathrm { MJ }$
A trillion is $10 ^ { 12 }$. So, $100 \times 10 ^ { 12 } \times 10 ^ { 6 } \mathrm {~J} = \underline { 100 \times 10 ^ { 18 } \mathrm {~J} }$

The Energy Usage in the United States in 2010 Was