Recent questions tagged chapter5

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Write two consequences of Newton’s second law of

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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How is centripetal force provided in case of the following?(i) Motion of planet around the sun,(ii) Motion of moon around the earth.(iii) Motion of an electron around the nucleus in an

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State Newton’s second, law of motion. Express it mathematically and hence obtaina relation between force and

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A railway car of mass 20 tonnes moves with an initial speed of 54km/hr. On applying brakes, a constant negative acceleration of 0.3m/`s^2` is produced.(i) What is the breaking force acting on the car?(ii) In what time it will stop?(iii) What distance will be covered by the car before if finally

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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What is the unit of coefficient of

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Name the factor on which coefficient of friction

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What provides the centripetal force to a car taking a turn on a level

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Give the magnitude and direction of the net force acting on(a) A drop of rain falling down with constant speed.(b) A kite skillfully held stationary in the

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Two blocks of masses `m_1, m_2` are connected by light spring on a smooth horizontal surface. The two masses are pulled apart and then released. Prove that the ratio of their acceleration is inversely proportional to their

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A shell of mass 0.020kg is fired by a gun of mass 100kg. If the muzzle speed of the shell is 80m/s, what is the recoil speed of the

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A train runs along an unbanked circular bend of radius 30m at a speed of 54km/hr. The mass of the train is 106kg. What provides the necessary centripetal force required for this purpose? The engine or the rails? What is the angle of banking required to prevent wearing out of the

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Three identical blocks each having a mass m, are pushed by a force F on a frictionless table as shown in figure. What is the acceleration of the blocks? What is the net force on the block P? What force does P apply on Q. What force does Q apply on

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(a) Define impulse. State its S.I. unit? (b) State and prove impulse momentum

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The number of diagonals in a polygon of n sides

asked Jan 18, 2022 in 8th-maths by krutika (1.7k points)

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The angles of a quadrilateral ABCD taken in an order are in the ratio 3 : 7 : 6 : 4. Then ABCD is

asked Jan 18, 2022 in 8th-maths by nikhil (1.8k points)

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If the diagonals of a quadrilateral bisect each other at right angles, it will be

asked Jan 18, 2022 in 8th-maths by purvi (1.8k points)

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The sum of the angles of a quadrilateral

asked Jan 18, 2022 in 8th-maths by sumit (1.6k points)

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In a square ABCD, the diagonals meet at point O. The ΔAOB

asked Jan 18, 2022 in 8th-maths by nishit (1.8k points)

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ABCD is a quadrilateral in which AB = 5 cm, CD = 8 cm and the sum of angle A and angle D is 180°. What is the name of this

asked Jan 18, 2022 in 8th-maths by sumit (1.6k points)

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Rukmini has a farm land which is triangular in shape. What is the sum of all the exterior angles taken in an order of the farm

asked Jan 18, 2022 in 8th-maths by purvi (1.8k points)

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