Explanation:
It is given that,
Electric field,
We need to find the change in the electric potential energy of the proton-field system when the proton travels to x = 2.5 m
From the conservation of energy, the loss in potential energy is equal to the gain in kinetic energy and kinetic energy is is equal to the work done.
So, the change in electric potential energy of the proton field system is . Hence, this is the required solution.
Answer:0.246 m
Explanation:
Given
height of window (h)=1 m
Time to pass window =0.28 s
Let roof is at a distance of above window
let t be the time to cover
------1
--------2
subtract 1 & 2
t=0.224 s
Answer:
Explanation:
mass of object = m
Mass of planet = M
Radius of planet = R
Height = h
Let the speed of the object as it hits the earth's surface is v.
the value of acceleration due to gravity
g = G M / R^2
where, g is the universal gravitational constant.
Use third equation of motion
where, u is the initial velocity which is equal to zero.
So,