4.) A Japanese bullet train slows from a speed of 50 m/sec to a speed of 40 m/sec in 500m. What is its acceleration?

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.

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers

the assestment will probley apele with cause and effect