Compare the normal force exerted on the book by the inclined plane and the weight force exerted on the book by the earth. Are they equal in magnitude?

1. Yes

2. No

3. Their magnitudes cannot be determined

since the forces are not in the same direction.

yes because I know so its yes

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.

the part of the wave he is travelling on is the crest