Answer:
Explanation:
Given
mass of object is m
Mass of planet is M
radius of planet is R
Total Energy associated with mass m at a height h above planet is Gravitational Potential Energy which is given by
![E_1=-\frac{GMm}{R+h}](https://tex.z-dn.net/?f=E_1%3D-%5Cfrac%7BGMm%7D%7BR%2Bh%7D)
When it falls on earth with some velocity v
=Kinetic Energy+Potential Energy
![=\frac{1}{2}mv^2+\frac{-GMm}{R}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B1%7D%7B2%7Dmv%5E2%2B%5Cfrac%7B-GMm%7D%7BR%7D)
As Energy is conserved therefore
![=E_2](https://tex.z-dn.net/?f=%3DE_2)
![\frac{-GMm}{R+h}=\frac{1}{2}mv^2+\frac{-GMm}{R}](https://tex.z-dn.net/?f=%5Cfrac%7B-GMm%7D%7BR%2Bh%7D%3D%5Cfrac%7B1%7D%7B2%7Dmv%5E2%2B%5Cfrac%7B-GMm%7D%7BR%7D)
![\frac{1}{2}mv^2=\frac{GMmh}{R(R+h)}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7Dmv%5E2%3D%5Cfrac%7BGMmh%7D%7BR%28R%2Bh%29%7D)
![v=\sqrt{\frac{2GMh}{R(R+h)}}](https://tex.z-dn.net/?f=v%3D%5Csqrt%7B%5Cfrac%7B2GMh%7D%7BR%28R%2Bh%29%7D%7D)
The answer is 125 because if u add you'll get the answer
Answer:Friction force
Explanation:
The frictional force is responsible for stopping the moving object.
The friction force is provided by nature in the form of air resistance, fluid resistance, Surface resistance.
For surface resistance, the friction force is of two types namely kinetic friction force and static friction force.
Static friction acts when the object is stationary and a force is applied to cause the motion while kinetic friction acts when the body starts moving.
kinetic friction is lesser is in magnitude as compared to static friction.
The correct explanation for the process of formation of dew from the water vapour is The water releases energy which causes the water molecules to have less kinetic and potential energy, changing their configuration from gas to liquid.
vapour is a gaseous form, while dew is a liquid state of matter therefore it's clear that vapour has to release energy to come in the liquid state, and in this process vapour, water molecules lose their kinetic and potential energy.