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A ball of mass (m) 0.5 kg is attached to the end of a string having length (L) 0.5 m. The ball is rotated on a horizontal circular path about vertical axis. The maximum tension that the string can bear is 324 N. The maximum possible value of angular velocity of ball (in radian/s) is - jee main 2012 physics 1 AnswerA metallic rod of length ‘A’ is tied to a string of length 2A and made to rotate with angular speed ω on a horizontal table with one end of the string fixed. If there is a vertical magnetic field ‘B’ in the region, the e.m.f. induced across the ends of the rod is : - physics 20131 AnswerIf a boy sitting in a train, moving at constant velocity, throws a ball straight up into the air,(NIFT PG)1 AnswerA batsman hits a cricket ball which then rolls on a level ground. After covering a short distance, the ball comes to rest. The ball slows to a stop because - 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 AnswerThe diameter of a metallic ball is 4.2cm. What is the mass of the ball, if the density of the metal is 8.9 g per cm3? CBSE class 9 mathematics1 AnswerA batsman hits back a ball straight in the direction of the bowler without changing its initial speed of 12 m/s. If the mass of ball is 0.15 kg. Determine impulse imparted. -Physics Cbse class 11 1 AnswerA batsman hits back a ball straight in the direction of the bowler without changing its initial speed of 12 m/s. If the mass of ball is 0.15 kg. Determine impulse imparted. -Physics Cbse class 11 1 AnswerFind (a) the velocity with which it was thrown up, (b) the maximum height it reaches, and (c) its position after 4 s. - Physics Cbse class 11 1 AnswerA 2.6 gram smooth table-tennis (ping-pong) ball has a diameter of 38 mm. Density (ρ) of air is 1.2 kg/m3. Neglect the effect of gravity. Take coefficient of drag as 0.5. If the ball is struck with an initial velocity of 30 m/s, the initial deceleration, in m/s2, is _________.0 Answer Calculate (i) the maximum height to which it rises, (ii) the total time it takes to return to the surface of the Earth. - Physics Cbse class 11 1 Answer Calculate (i) the maximum height to which it rises, (ii) the total time it takes to return to the surface of the Earth. - Physics Cbse class 11 1 AnswerA ball is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate of 10 ms-2, with what velocity will it strike the ground? After what time will it strike the ground? - Physics Cbse class 11 1 AnswerBox 1 contains 15 balls out of which 3 are red. Box 2 contains 12 balls out of which 4 are red. If one ball is drawn at random from each box simultaneously, the probability of getting at least one red ball is. GATE- Agricultural En1 AnswerDefine track ball. CBSE CLASS VI -20181 AnswerA ball is dropped from rest from a height of 1 m in a frictionless tube as shown in the figure. If the tube profile is approximated by two straight lines (ignoring the curved portion), the total distance travelled (in m) by the ball is __________ (correct to two decimal places). 1 AnswerRead the extract given below and answer the questions that follow. CBSE English1 AnswerA uniform circular disc of mass 𝑚 and radius 𝑅 is rotating with angular speed 𝜔 about an axis passing through its center and making an angle 𝜃=30∘ with the axis of the disc. If the kinetic energy of the disc is 𝛼𝑚𝜔2𝑅2, the value of 𝛼 is ________ (up to 2 decimal places).0 AnswerA box contains 20 balls bearing numbers 1, 2, 3, 4, ..., 20. A ball is drawn at random from the box. What is the probability that the number on the ball is CBSE Mathematics1 AnswerA bag contains 15 white and some black balls. If the probability of drawing a black ball from the bag is thrice that of drawing a white ball, find the number of black balls in the bag. Mathematics CBSE class 10 20171 Answer
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