
A particle of mass m and charge q moves at a high speed along the xaxis.It is initially near x = ∞ and it ends up near x = +∞. A second charge Q is fixed at the point x=0,y = d.As the moving charge passes the stationar ...

*Image* Find velocity of point C on string. ...

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Please verify whether A and D are r8 option? *Image* ...

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A smooth sphere of radius R is made to translate in a straight line with constant acceleration a=g. A particle kept on the top of the sphere is released from there at zero velocity with respect to the sphere. The speed of the ...

a chain of mass m=0.8 kg and length l=1.5 m rests on a rough table so that one of its ends hangs over the edge.The chain starts sliding off the table all by itself provided the hanging part is n=1/3 of chain's length.What wil ...

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Two particles ,1 and 2, move with constant velocities v1 and v2 . At the initial moment their radius vectors are r1 and r2 . How must these four vectors be interrelated for the particles to collide ? ...

A particle of mass m moves in onedimensional Potential energy U(x)=ax2+bx4.a&b are +ve constants.The angular frequency of small oscillations about the minima of the potential energy is (A)π a/2b (B)2 a/m (c) 2a/m (D) a/2m ...

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A wire of resistance ' R ' and length ' L ' is connected to a d.c. source of emf V through a switch ' S ' *Image* At t = 0, the switch ' S ' is closed and at the same time an external agent starts stretching the wire such tha ...

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The value of CP  CV is 1.00R for a gas sample in state A and is 1.08R in state B. Let pA and pB denote the pressures and TA and TB denote the temperatures of the states A and B resp. Most likely (a) pA<pB & TA>TB (b) p ...

To both, A and B, move away from a buoy and ancurd at the middle of a river, and the boat B across the river. Having moved off an equal distance from the buoy the boats returned . Find the ratio of times of motion of boats τ ...

A ball is dropped on a floor from a height of 2.0m. After the collision it rises upto a height of 1.5m. Assume that 40% of the mechanical energy lost goes as thermal energy into the ball. Calculate the rise in the temperature ...

A 100kg block is started with a speed of 2m/s on a long, rough belt kept fixed in a horizontal position. The coefficient of kinetic friction betn. the block and the belt is 0.20. Consider the situation from a frame of referen ...

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A block of mass M is attached with the springs as shown. If the block is slightly displaced, the time period of SHM for the block shown in the figure will be? *Image* (A) 2π M/9K (B) 2π M/K (C) 4π/3 M/K (D) π M/2K ...

Two children stand on a large, sloping hillside that can be considered as a plane. The ground is just suﬃciently icy that a child would fall and slide downhill with a uniform speed as the result of receiving even the slight ...

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A motorboat going downstream overcame a raft At a point A ; τ=60min later it turned back and after sometime passed the raft at a distance l=6.0km from the point A . Find the flow velocity assuming the duty of the engine to b ...

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