Subject: Physics, asked on 23/7/17

## 18.  Potential difference across AB in the network shown is (1) Zero (2) E (3) $E-\frac{Ir}{2}$ (4) $E-2Ir$

Subject: Physics, asked on 26/10/17
Subject: Physics, asked on 17/1/18

## state parallelogram law of vector addition. show that resultant of two vectors A and B inclined ar an angle theta is R^2=A^2+B^2+2ABcos theta

Subject: Physics, asked on 8/7/12

## A ball is thrown vertically upwards with a velocity of 20m/s from the top of a multistorey building. The height of the point from where the ball is thrown is 25m from the ground.(1) How high the ball will rise?(2) How long it will be before the ball hits the ground? (Take g=10m/s2

Subject: Physics, asked on 21/2/19

## Please explain this question

Subject: Physics, asked on 25/3/16

## a rain of mass 4000 metric tons is moving with a velocity of 18KMPH. with the application of a force, its velocities changes to 'v' in 2 mins. if the power of the engine is 10MW, the value of 'v' is? (ans : 90)

Subject: Physics, asked on 12/9/18

## c) A physical quantity is given by h=Fv^2 /L x F . F is the force, v is the velocity and L is the angular momentum. Find the dimensions of h .

Subject: Physics, asked on 26/1/18

## Q. For given figure ${m}_{A}$ is 30 kg ${m}_{B}={m}_{C}$ = 5 kg respectively. All contact surfaces are smooth.  (g = 10m/${s}^{2}$). Select the correct statements.  (A) Acceleration of block A, B and C are 1 m/${s}^{2}$, 3 m/${s}^{2}$and 5 m/${s}^{2}$ respectively  (B) Contact force between B & Ground is 350 N  (C) Tension in string 30N  (D) Contact force between 'B' and 'C' is 15 N

Subject: Physics, asked on 23/11/14

## 18.)On as smooth table two blocks of masses 2.5kg and 1.5kg are placed one over the other.If the coefficient of static friction between two blocks is 0.2,the maximum horizontal force to be applied on the lower block so that the two blocks move together is (g=10m/s2)

Subject: Physics, asked on 22/10/14

## when total work done by a particle is positive :1.KE remains constant 2. momentum increases 3. KE increases 4. KE decreases

Subject: Physics, asked on 22/2/15

## a wire is cut half to its original length.. (a) how would it affect the increase in length under a given load ?(b) how does it affect the maximum load it can support without exceeding the elastic limit ?

Subject: Physics, asked on 13/10/16

## State law of conservation of linear momentum and derive the law of conservation of linear momentum using newton's second law of motion.

Subject: Physics, asked on 21/4/14

## a particle is acted upon by a force F=(i-2j+k) N . If the particle is at P(-1,2,3) , the torque of the force about Q(2,3,1) is ?

Subject: Physics, asked on 12/11/15

## A ball is allowed to fall from rest from height h. If it travels 9/25th of total height in the last second of its fall then ball will hit ground will hit ground with speed 1. 45 m/s 2. 50 m/s 3. 30 m/s 4.35 m/s

Subject: Physics, asked on 26/3/16

## a rubber ball dropped from a height of 20m falls on the roof of an elevator going up at 2ms-1. if the collision of the ball with the elevator is elastic, the ball rebounds wit a velocity of? ( g = 10m/s) (ans: 24m/s)

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