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Ashu G.

3 hours ago

A car having mass of 1000 kg is moving with a velocity of 0.5 m/s. What will be its momentum?

A body is moving vertically upwards. Its velocity changes at a constant rate from 50ms ?1 to 20ms ?1 in 3s. What is its acceleration?

A ball is projected horizontally with a velocity of 5m/s from the top of a building 19.6m high. How long will the ball take to hit the ground

If the velocity of a body does not change, its acceleration is

A body of mass 5kg is moving with velocity 2ms ?1 . Calculate its linear momentum.

If bullet of mass 5 gm moving with velocity 100 m/sec, penetrates the wooden block upto 6 cm. Then the average force imposed by the bullet on the block is

A force acts on a body of mass 3 kg such that its velocity changes from 4 m s ?1 to 10 m s ?1 . The change in momentum of the body is :

A force of 10 N acts on a body of mass 20 kg for 120 seconds. The change in its momentum is :

A force acts on a body of mass 3 kg such that its velocity changes from 4ms ?1 to 10ms ?1 . The change in momentum of the body is:

The time, in which a force of 2 N produces a change as momentum of 0.4 kg m s ?1 in the body is :

Two balls A and B of masses m and 2m are in motion with velocities 2v and v respectively. What is the ratio of their momentum ?

The linear momentum of a ball of mass 50g is 0.5kgms ?1 . Find its velocity.

George K.

4 hours ago

Two charges each of 100 micro coulomb are separated in a medium of relative permittivity 2 by a distance of 5cm. The force between them is :

Two equally charged pith balls 3 cm apart repel each other with a force of 4×10?5 N. The charge on each ball is

The excess (equal in number) number of electrons that must be placed on each of the two small spheres spaced 3cm apart with a force of repulsion between them to be 10?19N is :

Two point charges +4C and +6C repel each other with a force F. If a charge ?5C is given to each of these charges, the force becomes:

Q1?,Q2? charges are separated by distance ‘d’. F is the force between them. Now the value of Q2? is halved. To have the same force between the charges, the distance of separation should be :

Two unlike charges separated by a distance of 1m attract each other with a force of 0.108N. If the charges are in the ratio 1:3, the weak charge is :

The force between two charges 2?C and 4?C is 24N, when they are separated by a certain distance in free space. The forces if, (a) distance between them is doubled and (b) distance is halved are :

A charge of 10 units is divided so that force between the two charges is maximum when placed 2 cm apart. The two charges are:

A charge Q is divided into two parts q1? and q2? such that they experience maximum force of repulsion when separated by certain distance. The ratio of Q,q1? and q2? is :

Two alpha particles are separated by a distance of 10?13m. The force between them in free space is :

Two charged particles having charges +25?C and +50?C are separated by a distance of 8 cm. The ratio of forces on them is:

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