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At what range will a radar set show a fighter plane flying at 3 km above its centre and at distance of 4 km from

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

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Derive expressions for velocity and acceleration for uniform circular motion.OR Derive expression for linear acceleration in uniform circular

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Two forces 5 and 10 kg wt are acting with an inclination of `120^o` between them. What is the angle which the resultant makes with 10kg

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

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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 particle of mass 0.40 kg moving initially with constant speed of 10m/s to the north is subject to a constant force of 8.0 N directed towards south for 30s. Take at that instant, the force is applied to be t = 0, and the position of the particle at that time to be x = 0, predict its position at `t = -5s, 25s,

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

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Show that for an isolated system the centre of mass moves with uniform velocity along a straight line

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(a) Which physical quantities are represented by the (i) Rate of change of angular momentum (ii) Product of I and `vecw`(b) Show that angular momentum of a satellite of mass MS revolving around the earth having mass Me in an orbit of radius r is equal to `[G Me

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

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(a) A cat is able to land on its feet after a fall. Why?(b) If angular momentum moment of inertia is decreased, will its rotational K E. . be also conserved?

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

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A planet revolves around on massive star in a highly elliptical orbit is its angular momentum constant over the entire orbit. Give

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Define Gravitational potential energy Hence deduces an expression for gravitational potential energy of a body placed at a point sear the surface of

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What is kepler’s law of periods? Show it

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How far away from the surface of earth does the value of g is reduced to 4% of its value on the surface of the earth Given radius of earth =

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Define surface

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If a big drop of radius R is formed by 1000 small droplets of water, then find the radius of small

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If eight rain drops each of radius 1 mm are falling through air at a terminal velocity of 5 cm | s. If they coalesce to form a bigger drop, what is the terminal velocity of bigger

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Why does the cloud seem floating in the

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A metal plate 5 cm × 5 cm rests on a layer of castor oil 1 mm thick whose coefficient of viscosity is 1.55 `Nsm^(-2)`. What is the horizontal force required to more the plate with a speed of 2 cm |

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

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If the rate of flow of liquid through a horizontal pipe of length l and radius R is Q. What is rate of flow of liquid if length and radius of tube is

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The accumulation of snow on an aero plane wing may reduce the lift.

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Two pipes P and Q having diameters `2 × 10^(-2_ m and 4 × 10^(-2) m` respectively are joined in Series with the main supply line of water. What is the velocity of water flowing in pipe

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

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