Which one of the following statements concerning foci and epicenters is correct? a. the fault first cracks at the epicenter and breaks through to the surface at the focus. b. the earthquake starts at the focus and the rupture extends down to the epicenter. c. the epicenter is at the surface directly above the focus where the earthquake initiates. d. the focus is the faulted point on the surface directly above the epicenter.

C.

Explanation:

The epicenter is at the surface directly above the focus where the earthquake initiates.

answer; i believe the correct answer is (40,000 j) good luck

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.