Answer:
0.159 Tesla per second
Explanation:
r = 2 m, e = 2 V,
Let the rate of magnetic field changing is dB / dt.
By use of Farady's law of electromagnetic induction
e = rate of change of magnetic flux
e = dФ /dt
e = A x dB / dt
2 = 3.14 x 2 x 2 x dB / dt
dB / dt = 0.159 Tesla per second
Answer:
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Answer:

Explanation:
The acceleration due to gravity on the surface of the Earth is given by:

where
G is the gravitational constant
M is the mass of the Earth
R is the radius of the Earth
Here we want to find the new Earth radius R' for which the gravitational acceleration at the surface, g', would be 3 times the current value of g:

So we would have

Solving the equation for R', we find

Answer:
20
Explanation:
20 multiplied by 2
hope i hv answered ur question