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A lead bullet at 27 C just melts when stopped by an obstacle. Assuming that 25% of heat is absorbed by the obstacle, then the velocity of the bullet at the time of striking is
23
Oct
A lead bullet at 27 C just melts when stopped by an obstacle. Assuming that 25% of heat is absorbed by the obstacle, then the velocity of the bullet at the time of striking is A lead bullet at 27 C just melts when stopped by an obstacle. Assuming that 25% of heat is absorbed [...]
10 g of ice at -20 C is dropped into a calorimeter containing 10 g of water at 10 C; the specific heat of water is twice that of ice. When equilibrium is reached, the calorimeter will contain
23
Oct
10 g of ice at -20 C is dropped into a calorimeter containing 10 g of water at 10 C; the specific heat of water is twice that of ice. When equilibrium is reached, the calorimeter will contain 10 g of ice at -20 C is dropped into a calorimeter containing 10 g of water [...]
A simple pendulum has a bob suspended by an inextensible thread of length 1 metre from a point A of suspension. At the extreme position of oscillation the thread is suddenly caught by a peg at a point B distant 1/4 m from A and the bob begins to oscillate in the new condition. The change in frequency of oscillation of the pendulum is approximately given by g = 10 m/s^2
23
Oct
A simple pendulum has a bob suspended by an inextensible thread of length 1 metre from a point A of suspension. At the extreme position of oscillation the thread is suddenly caught by a peg at a point B distant 1/4 m from A and the bob begins to oscillate in the new condition. The [...]
Steam is passed into 22 g of water at 20 C. The mass of water that will be present when the water acquires a temperature of 90 C is
23
Oct
Steam is passed into 22 g of water at 20 C. The mass of water that will be present when the water acquires a temperature of 90 C is Steam is passed into 22 g of water at 20 C. The mass of water that will be present when the water acquires a temperature of [...]
Work done in converting one gram of ice at -10 C into steam at 100 C is
23
Oct
Work done in converting one gram of ice at -10 C into steam at 100 C is Work done in converting one gram of ice at -10 C into steam at 100 C is October 23, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
A horizontal platform with an object placed on it is executing simple harmonic motion in the vertical direction. The amplitude of oscillation is 3.92 × 10^−3 m. What should be the least period of these oscillations, so that the object is not detached from the platform?
23
Oct
A horizontal platform with an object placed on it is executing simple harmonic motion in the vertical direction. The amplitude of oscillation is 3.92 × 10^−3 m. What should be the least period of these oscillations, so that the object is not detached from the platform? A particle executes simple harmonic motion with an angular [...]
A solid sphere is rotating about a diameter at an angular velocity ω. If it cools so that its radius reduces to I/n of its original value, its angular velocity becomes
23
Oct
A solid sphere is rotating about a diameter at an angular velocity ω. If it cools so that its radius reduces to I/n of its original value, its angular velocity becomes A solid sphere is rotating about a diameter at an angular velocity ω. If it cools so that its radius reduces to I/n of [...]
A particle of mass m is rotating in a plane in circular path of radius r. Its angular momentum is L. The centripetal force acting on the particle is
23
Oct
A particle of mass m is rotating in a plane in circular path of radius r. Its angular momentum is L. The centripetal force acting on the particle is A particle of mass m is rotating in a plane in circular path of radius r. Its angular momentum is L. The centripetal force acting on [...]
If the angular momentum of any rotating body increases by 200%, then the increase in its kinetic energy
23
Oct
If the angular momentum of any rotating body increases by 200%, then the increase in its kinetic energy If the angular momentum of any rotating body increases by 200% then the increase in its kinetic energy October 23, 2020 Category: Cengage NEET by C.P Singh , Chapter 11 - Rotational Motion , Part 1 ,
Two bodies have their moments of inertia I and 2I respectively about their axis of rotation. If their kinetic energies of rotation are equal, their angular momentum will be in the ratio.
23
Oct
Two bodies have their moments of inertia I and 2I respectively about their axis of rotation. If their kinetic energies of rotation are equal, their angular momentum will be in the ratio. their angular momentum will be in the ratio. Two bodies have their moments of inertia I and 2I respectively about their axis of [...]