Recent questions in 11th Physics

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A vector `vecA` has magnitude 2 and another vector `vecB` have magnitude 3 and is perpendicular to each other. By vector diagram find the magnitude of `2vecA +vecB` and show its direction in the

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Find a unit vector parallel to the resultant of the vectors`vecA=2hati+3hatj+4hatk and

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(a) What is the angle between `vecA and vecB` if `vecA and vecB` denote the adjacent sides of a parallelogram drawn form a point and the area of the parallelogram is `1/2 AB` ?(b) State and prove triangular law of vector

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

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What will be the effect on horizontal range of a projectile when its initial velocity is doubled, keeping the angle of projection

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What will be the effect on maximum height of a projectile when its angle of projection is changed from `30^o` to `60^o`, keeping the same initial velocity of

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What is the angular velocity of the hour hand of a

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A body is moving on a curved path with a constant speed. What is the nature of its

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A stone tied at the end of string is whirled in a circle. If the string breaks, the stone flies away tangentially.

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What are the two angles of projection of a projectile projected with velocity 30m/s, so that the horizontal range is 45m. Take, `g =

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The blades of an aeroplane propeller are rotating at the rate of 600 revolutions per minute. Calculate its angular

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What is a uniform circular motion? Explain the terms time period, frequency and angular velocity. Establish relation between

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A body of mass m is thrown with velocity `'υ'` at angle of `30^o` to the horizontal and another body B of the same mass is thrown with velocity υ at an angle of `60^o` to the horizontal. Find the ratio of the horizontal range and maximum height of A and

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At what point of projectile motion (i) potential energy maximum (ii) Kinetic energymaximum (iii) total mechanical energy is

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If force is acting on a moving body perpendicular to the direction of motion, then what will be its effect on the speed and direction of the

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The two ends of spring – balance are pulled each by a force of 10kg.wt. What will be the reading of the

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A lift is accelerated upward. Will the apparent weight of a person inside the lift increase, decrease or remain the same relative to its real weight? If the lift is going with uniform speed,

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A soda water bottle is falling freely. Will the bubbles of the gas rise in the water of the

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Two billiard balls each of mass 0.05kg moving in opposite directions with speed 6m/s collide and rebound with the same speed. What is the impulse imparted to each ball due to

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A nucleus is at rest in the laboratory frame of reference. Show that if it disintegrates into two smaller nuclei, the products must be emitted in opposite

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Explain why passengers are thrown forward form their seats when a speeding bus stops

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