Physics Test - ...

Two metal balls with radii \(r_{1}\) and \(r_{2}\) are at a distance \(R\) from each other and are connected to a battery of emf E. D is regarding the interaction between connecting wire, the force of interaction between the balls:

Dimensions of coefficient of viscosity is:

Tyres are made circular because:

Which of the following is Kilowatt-hour a unit of?

The network shown in the figure is part of a complete circuit. If at a certain instant, the current \(I\) is \(5 {~A}\) and is decreasing at a rate of \(103 {A} /{s}\) then \({VB}- {VA}\) is:

A body of M.I. of \(3 \mathrm{~kg}-\mathrm{m}^{2}\), rotating with an angular velocity of \(2 \mathrm{rad} / \mathrm{s}\), has the same K.E. as a mass of \(12 \mathrm{~kg}\) moving with a velocity of:

If a lift is moving with constant acceleration 'a' in the upward direction, then the force applied by mass m on the floor of the lift will be:

If a body is rolling down from a hill at certain height, the body will have:

A wave executes a periodic motion $y=2\sin \frac{\pi }{4}\left(4t+\frac{x}{2}\right)$. What is the frequency?

Hooke's law states that with in the elastic limit is proportionalto strain: