As seen from Earth, two spaceships A and B are approaching along perpendicular directions. If A is observed by an Earth observer to have velocity uy 0.90c and B to have a velocity ux 0.90c, find the speed of ship A as measured by the pilot of B.

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 answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this

a=d/t

a="triangle"v/t

explanation:

a = acceleration