Recently Active Physics Questions

• Two thin similar convex glass pieces are joined together front to front,with its rear portion silvered such that a sharp image is formed 0.2 m for an object at infinity.When the air between the glass pieces is replaced by wat ...
• A body of mass m slides down a horizontal plane asit is pushed by aforce F which makes an angle θ with the horizontal.sow that the normal force acting on the body is given by N = mg + Fsinθ.Find the acceleration in terms of ...
replied2013-08-07 05:30:05
• shouldnt the answer be 1 ampere? ...
0·0· #Physics
• can anyone explain the meaning of multipole...????n is it related to dipole...??? ...
replied2013-08-04 09:46:24
• A radar is able to detect the reflected waves from an enemy aeroplane after a time interval of 0.02ms. if v= 3X10^8m/s. d= ...
replied2013-08-03 08:53:22
• A boy stands in front of a tall wall and claps. The boy continues to clap every time an echo is heard. Another boy finds that the time taken between the firs and 51st clap is 18s. v=? 330m/s 340 m/s 333m/s none ...
0·0· #Physics
• *Image* A trolley is being self-pulled up an incline plane by a man sitting in it. He applies a force of 250 N. If the combined mass of the man and trolley is 100 kg, find the acceleration of the trolley. ...
replied2013-07-30 07:16:34
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replied2013-07-30 07:01:39
• *Image* My approach... Initially height is h and let after the temp. is increased to 100°C the height be h'. The buoyant force(U)=h*A*p*g(Initially,and A is the area of cross section of the cylinder) After the temp. increase ...
replied2013-07-30 06:28:28
• Draw fbd *Image* ...
• *Image* Please post the solution as well... ...
replied2013-07-26 20:44:56
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• *Image* it is an infinite grid.. each segmnt of each resitance is R. all are equal squares.. to find resistance between A nd B ...
replied2013-07-21 19:07:08
• If tan^2α=1+2tan^2β,prove that cos2β=1+2cos2α ...
replied2013-07-19 10:40:00
• In my class X physics book it is written that the expression W=QV "is analogous to the amount of work needed in lifting a weight mg from the earth surface to a vertical height h which is given as W=mg x h = mgh. Obviously on ...
replied2013-07-19 10:22:21
• *Image* *Image* Please So the workng ...
replied2013-07-19 10:21:32
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replied2013-07-19 09:16:16
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replied2013-07-19 07:06:45
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replied2013-07-19 07:00:15
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replied2013-07-19 03:19:35
• Find equivalent resistance between A & B. *Image* ...
replied2013-07-18 00:54:30
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replied2013-07-17 09:18:22
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replied2013-07-17 06:46:37
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replied2013-07-16 02:10:26
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replied2013-07-15 10:19:02
• A disc of mass m ,radius R is shown rolling on horz surface(having sufficient friction). Variation of electric fields with direction exist along its path as shown in figure *Image* 1.Find the velocity after very long time. 2. ...
replied2013-07-15 06:13:28
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replied2013-07-15 00:30:57
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replied2013-07-14 23:30:42
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replied2013-07-14 23:22:36