A ball rolls from point A to point B. The total energy of the ball at point A isn’t the same as the sum of its potential energy
1 answer:
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Simply, apply the formula 
and insert the values of m = mass, v = velocity and E = Energy.
The result will be
, m = 1 kg
The result will be
Answer:
The inducerd emf is 1.08 V
Solution:
As per the question:
Altitude of the satellite, H = 400 km
Length of the antenna, l = 1.76 m
Magnetic field, B =
Now,
When a conducting rod moves in a uniform magnetic field linearly with velocity, v, then the potential difference due to its motion is given by:
Here, velocity v is perpendicular to the rod
Thus
e = lvB (1)
For the orbital velocity of the satellite at an altitude, H:
where
G = Gravitational constant
= mass of earth
= radius of earth
Using this value value in eqn (1):