Answer:
The magnitude of induced emf is 5.4 V
Explanation:
Given:
Magnetic field T
Area of loop
Time take to reduce loop to zero sec
To find induced emf we use faraday's law,
Induced emf is given by,
Here minus sign shows lenz law, for finding magnitude of emf we ignore it.
Where
Put the value of flux and find induced emf,
V
Therefore, the magnitude of induced emf is 5.4 V
Explanation:
The given value of P is as follows.
P = 1.06F + 22.18,
or, P' = 1.06
As p' is defined and non-zero. Hence, only critical points are boundary points.
For F = 10, the value of P will be calculated as follows.
P =
= 32.78
For F = 70, the value of P will be calculated as follows.
P =
= 96.38
Therefore, the minimum value of P is 32.78 and maximum value of P is 96.38.
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Answer:
Option B is the correct answer.
Explanation:
Let us consider 40 meter above ground as origin.
Initial velocity = 17 m/s
Final velocity = 24 m/s
Acceleration = 9.81 m/s
We have equation of motion v² = u² + 2as
Substituting
24² = 17² + 2 x 9.81 x s
s = 14.63 m
Distance traveled by rock = 14.63 m down.
Height of rock from ground = 40 - 14.63 = 25.37 m = 25.4 m
Option B is the correct answer.
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