The ramp in the figure is frictionless. If the blocks are released from rest, which way does the 10 kg block slide, and what is the magnitude of its acceleration?

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

explanation:

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.