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what is Basics of conservation of mass, momentum and energy?-engineering physics1 AnswerThe potential energy of a freely falling object decreases progressively. Does this violate the law of conservation of energy? Why? - Physics Cbse class 11 1 AnswerHow much momentum will a dumbbell of mass 10 kg transfer to the floor if it falls from a height of 80 cm? Take its downward acceleration to be 10 ms-2 . - Physics Cbse class 11 1 AnswerThe kinetic energy of a body is increased by 300%. What is the percentage increase in the linear momentum of the body? -Physics Cbse class 11 1 AnswerWhat is the minimum energy required to launch a satellite of mass m from the surface of a planet of mass M and radius R in a circular orbit at an altitude of 2R ? - physics 20131 AnswerAn object of mass 100 kg is accelerated uniformly from a velocity of 5 ms-1 to 8 ms-1 in 6 s. Calculate the initial and final momentum of the object. Also, find the magnitude of the force exerted on the object. - Physics Cbse class 11 1 AnswerThe kinetic energy of an object of mass, m moving with a velocity of 5 ms-1 is 25 J. What will be its kinetic energy when its velocity is doubled? What will be its kinetic energy when its velocity is increased three times? - Physics Cbse class 11 1 AnswerAn object of mass 1 kg travelling in a straight line with a velocity of 10 ms-1 collides with, and sticks to, a stationary wooden block of mass 5 kg. Then they both move off together in the same straight line. Calculate the total momentum just before the impact and just after the impact. Also, calculate the velocity of the combined object. - Physics Cbse class 11 1 Answer Compare and contrast bio-mass and hydro electricity as sources of energy. -CBSE Physics 1 AnswerState the law of mass action. engineering physics.1 AnswerDefine angular momentum. Establish the relation between angular momentum and torque for system of particles. Physics Cbse class 11 1 AnswerA hockey ball of mass 200 g travelling at 10 ms-1 is struck by a hockey stick so as to return it along its original path with a velocity at 5 ms-1. Calculate the change of momentum occurred in the motion of the hockey ball by the force applied by the hockey stick. - Physics Cbse class 11 1 AnswerPhysics Cbse class 11 1 AnswerObtain the expression for potential energy of a spring. -Physics Cbse class 11 1 AnswerA circular solid disc of uniform thickness 20 mm, radius 200 mm and mass 20 kg, is used as a flywheel. If it rotates at 600 rpm, the kinetic energy of the flywheel, in Joules is -Mechanical Engineering-gate-20121 AnswerState and prove Impulse – Momentum theorem. -Physics Cbse class 11 1 Answer This question has statement I and Statement II. Of the four choice given after the statements, choose the one that best describes the two statements. - physics 20131 AnswerExplain density of states (qualitative only) Fermi–Dirac Statistics-engineering physics?-engineering physics1 AnswerComment on these suggestions. - Physics Cbse class 11 1 AnswerAn annular disc has a mass m, inner radius R and outer radius 2R. The disc rolls on a flat surface without slipping. If the velocity of the centre of mass is v, the kinetic energy of the disc is: (-Gate mechanical 2014)1 Answer
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