Answer:
Explanation:
According to Faraday-Newmann-Lenz, the induced emf in the loop is given by:
(1)
where is the rate of variation of the magnetic flux through the loop.
We know that the magnetic flux through the loop is given by
where B is the magnetic field and A is the area of the loop. Since the magnetic field is constant, we can write the variation of flux as
So eq.(1) becomes
and the problem gives us:
is the magnetic field
is the rate at which the area changes
Substituting into the equation, we find
Speed/acceleration = time
45/7
6.4
You have to round the decimal to 6.4
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The correct answer is option A. 1/4 times
This is because distance and force are inversely proportional
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Answer: d = st
Explanation:
We know that the distance is equal to the rate (speed) times the time
d = st