Why does the heavier guns are preffered over lighter ones ?

Why does Moon have no atmosphere?

Two stone of masses m and 2 m are whirled in horizontal circles, the heavier one in a radius r//2 and the lighter one in radius r . The tangential speed of lighter stone is n times that of the value of heavier stone when the experience same centripetal forces. the value of n is

Statement I: If a sphere of mass m moving with speed u undergoes a perfectly elastic head-on collision with another sphere of heavier mass M at rest ( M gt m ), then direction of velocity of sphere of mass m is reversed due to collision (no external force acts on system of two spheres). Statement II: During a collision of spheres of unequal masses, the heavier mass exerts more force on the lighter mass in comparison to the force which lighter mass exerts on the heavier one,

Why does Moon have no atmosphere'?

Two blocks of masses 5 kg and 2 kg are placed on a frictionless surface and connected by a spring. An external kick gives a velocity of 14 m//s to the heavier block in the direction of lighter one. The magnitudes of velocities of two blocks in the centre of mass frame after the kick are respectively :

Two blocks of masses 5 kg and 2 kg are placed on a frictionless surface and connected by a spring. An external kick gives a velocity of 14 m//s to the heavier block in the direction of lighter one. The magnitudes of velocities of two blocks in the centre of mass frame after the kick are, respectively,

Why instantaneous rate is preferred over average rate?

Why does ether act as a nucleophile ?

Expand 'ELISA'. Why is this method preferred over conventional methods of diagnosis of diseases ?

A body of mass M moves in outer space with vleocity v. It is desired to break the body into two parts so that the mass of one part is one-tenth of the total mass. After the explosion, the heavier part comes to rest whole the lighter part continues to move in the original direction of motion. The velocity of the small part will be