Answer:
K = G Mm / 9R
Explanation:
Expression for escape velocity V_e = 
Kinetic energy at the surface = 1/2 m V_e ²
= 1/2 x m x 2GM/R
GMm/R
Potential energy at the surface
= - GMm/R
Total energy = 0
At height 9R ( 8R from the surface )
potential energy
= - G Mm / 9R
Kinetic energy = K
Total energy will be zero according to law of conservation of mechanical energy
so
K - G Mm / 9R = 0
K = G Mm / 9R
When the temperature increases, the intermolecular forces between the molecules of a liquid become weaker, and some bonds break easily. Thus as temperature increases, the surface tension of a liquid decreases.
The water droplets then became precipitation, and depending on the climate/weather, it could turn into rain, snow, sleet, or even hail.
: D
Answer: C. Radio-controlled toy airplane
Explanation:
Just did the quiz
Answer:
It will be A. So since its 2 times more the kinetic energy. But then you have to square it 2^2 = 4
