A small private plane is currently playing this to an island the plane is 0.9 km on the air. ifvthe potential energy of the plane and it's three passengers is 48510000 j what is the combined mass of the plane and it's passengers? Round your answer to the nearest tenth place

the mass = 5494.4[kg]

Explanation:

In order to find the joint mass of the plane and the passengers, we must use the following equation:

Where:

m = mass [kg]

g = gravity = 9.81[m/s^2]

h = elevation = 0.9 [km]

Now clearing the term m

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.

fgravity=10x10=100n case 1

fgravity=30x20=600n case 2

6 times more