Which graph BEST shows the variation of the repulsive force,F, with a distance?
2 answers:
Answer:D
Explanation: according to Coulomb's law,The magnitude of the force between two point charges varies inversely as the square of the distance between them. This means that as the distance approaches zero, the forest becomes indefinitely large. As the distance becomes larger and larger, the magnitude of force approaches zero, but the curve never actually cuts the distance axis. So The answer is D
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Answer : The angular acceleration is
Solution : Given,
The given angular velocity equation is,
At t = 0,
At t = t,
Angular acceleration : It is defined as the rate of change of angular velocity with respect to time.
Formula used for angular acceleration :
where,
= angular acceleration
= angular velocity at time 't'
= angular velocity at time '0'
t = time
Now put all the given values in this formula, we get the angular acceleration.
Therefore, the angular acceleration is