A girl takes her dog for a walk. She walks 5.0 km [N], turns left and walks another 12 km [W], and then turns left again and walks another 10 km [S]. (a) Draw a vector diagram describing their motion. (b) What is the total distance that they travelled? (c) What is their displacement? (d) In what direction would they need to travel in order to return to their starting point in the shortest distance?

Explanation:27 km

it takes about 30 days for it to break down

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.