# Recently Active Physics Questions

• A particle of mass m and charge q moves at a high speed along the x-axis.It is initially near x = -âˆž and it ends up near x = +âˆž. A second charge Q is fixed at the point x=0,y = -d.As the moving charge passes the stationar ...
replied2014-02-16 22:06:54
• *Image* Find velocity of point C on string. ...
replied2014-02-14 22:41:34
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replied2014-02-14 20:19:28
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replied2014-02-14 01:40:57
• Please verify whether A and D are r8 option? *Image* ...
replied2014-02-13 06:26:33
replied2014-02-13 06:17:36
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replied2014-02-13 04:04:11
• 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 ...
replied2014-02-13 00:25:20
• 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 ...
replied2014-02-12 06:04:35
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replied2014-02-12 05:24:11
• 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 ? ...
replied2014-02-11 04:32:43
• A particle of mass m moves in one-dimensional 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)Ï€ a/2b (B)2 a/m (c) 2a/m (D) a/2m ...
replied2014-02-11 04:03:30
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replied2014-02-11 00:08:46
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replied2014-02-10 23:36:08
• 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 ...
replied2014-02-10 18:08:00
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replied2014-02-10 02:29:44
• 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 ...
replied2014-02-09 22:26:52
• 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 Ï„ ...
replied2014-02-09 01:46:21
• 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 ...
replied2014-02-08 01:12:12
• 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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replied2014-02-07 02:27:45
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replied2014-02-05 07:49:27
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replied2014-02-05 00:37:42
• 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) 2Ï€ M/9K (B) 2Ï€ M/K (C) 4Ï€/3 M/K (D) Ï€ M/2K ...
replied2014-02-04 06:29:25
• Two children stand on a large, sloping hillside that can be considered as a plane. The ground is just suï¬ƒciently 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 ; Ï„=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 ...
replied2014-02-03 09:53:25
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replied2014-02-01 00:43:57
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replied2014-01-31 06:06:37
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replied2014-01-31 04:49:14