Under a thundercloud or lightning bolt
Answer:
Explanation:
The difference in time will be due to travel through atmosphere where speed of light slows down. If t be the thickness of atmosphere and c be the speed of light in space and μ be the refractive index of atmosphere difference in travel time will be as follows .
difference = \frac{2t\mu }{c}-\frac{2t }{c}
=\frac{2t}{c }\left ( 1-\mu \right )
Now t = 40 x 10³m ,μ = 1.000293 , c = 3 x 10⁸.
difference =\frac{2t\mu }{c}-\frac{2t }{c}
=\frac{2t}{c }\left ( \mu -1 \right )\\
=\frac{ 2\times 40\times 10^3}{3\times10^3 }\left ( 1.000293-1 \right )\\
=7.81\times 10^{-3}
s
Answer:1080 N/m
Explanation:
Given
Spring constant of first Spring 
mass of both the system is same
Both system have same maximum velocity
if
is general equation of SHM
then maximum velocity is given by




similarly 
also 
so 



50 N/cm^2. It is 75+525/4x3. Pls mark me brainliest
Answer:
The potential energy is 
Explanation:
Given that,
Force 
We need to calculate the potential energy
Using formula of work done

Put the value of F

On integration

...(I)
U = 0, x = 0 so C = 0
Put the value of c and α in equation (I)


Hence, The potential energy is 