A body of mass m crosses the top most point of a vertical circle with critical speed. What will be tension in string when it is horizontal-

A particle of mass m is rotating by means of a string in a vertical circle. The difference in the tension at the bottom and top would be-

This artery passes blood to the kidney is:

In human, the waste products of nucleotide metabolism are excreted as

Bacteria are included in which of the following kingdoms

3 semicircular canals located above utricle lie –

A particle of mass 2 kg starts moving in a straight line with an initial velocity of at a constant acceleration of . Then rate of change of kinetic energy

A car of mass 1000 kg moves at a constant speed of up an incline. Assume that the frictional force is 200 N and that where, is the angel of the incline to the horizontal. The . Find the power developed by the engine

The work done in dragging a stone of mass 100 kg up an inclined plane 1 in 100 through a distance of 10 m is (take )

Statement ITwo particles moving in the same direction do not lose all their energy in a completely inelastic collision.
Statement IIPrinciple of conservation of momentum holds true for all kinds of collisions.

If momentum is increased by 20%, then kinetic energy increases by

A spring gun of spring constant 90 is compressed 12 cm by a ball of mass 16 g. If the trigger is pulled, the velocity of the ball is

The minimum velocity (in ) with which a car driver must traverse a flat curve of radius 150 m and coefficient of friction 0.6 to avoid skidding is

Read the two reaction A and B given below and select the correct option accordingly
A) ADP + Pi ATP
B) ATP ADP + Pi

Therefore the correct option is choice 1

A parallel plate capacitor of area A, plate separation d and capacitance is filled with three different dielectric materials having dielectric constants as shown. If a single dieletric material is to be used to have the same capacitance is this capacitors, then its dielectric constant is given by

A body weight 8 g when placed in one pan and 18 g when placed on the other pan of a false balance. If the beam is horizontal when both the pans are empty. The true weight of the body is