Two point charges exert on each other a force F when they are placed r distance apart in air. When they are placed R distance apart in a medium of dielectric constant K, they exert the same force. The distance R equals:
r K
Given that ? is the speed, r is radius and g is acceleration due to gravity. Which of the following is dimensionless?
Dimensions of impulse are:
[ML–2T–3]
[ML–2]
[MLT–1]
[MLT–2]
Which of the following is a 3-dimensional motion?
What is the angle of projection for maximum horizontal range?