Recently Active Physics Questions

a ball falls frm 20 m height on floor n rebounds to 5m time of contact is .02sec find acc during iimpact ...

wen germanium is doped 1 part in a million wid indium itz ocnductivity increase by a factor of 10 10^3 10^6 10^5 gimme d formula or wat so stuff u noe n d answer ...

What will be the electrostatics force between two steel spheres each weighing 1 kg and separated by 1 m if each one of them has one percent more electron than protons. ...

When a bubble rises what happens to the Potential energy ?? I thought abt it in 2 ways & got 2 logical answers but only 1 is right..pls help ...

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for protcting a sensitiev equipmnt frm xetrnal mag field it shud b a)placed in aluminum can b)placed in iron can c)wrappd in insulation wen passing cuurnt thru it d) surundd by fine copper shheet ...

any one giving mp pet ...

HCV(FRICTION) EXERCISE QUES NO.29 ...

post the solution of HCV(friction) q-31 of exercise ...

An astronaut inside a small space ship orbiting around earth cannot detect gravity.,,but if the space station orbiting around earth has large size he can... WHY??? ...

Q. 4. An insulated container of gas has two chambers separated by an insulating partition. One of the chambers has volume V1 and contains ideal gas at pressure P1 and temperature T1. The other chamber has volume V2 and contai ...

1. The problem statement, all variables and given/known data The radius of the orbit of an electron in a hydrogen atom is 0.05 nm. Using the planetary model, calculate the orbital velocity needed by the electron to avoid bein ...

In the arrangement shown, m= 2kg and M = 8kg. Assuming pulleys to be smooth and light, and the contact surfaces to be frictionless, find the initial acceleration of the wedge. ...

Two coaxial solenoids are made by winding thin insulated wire over a pipe of cross sectional area A = 10 cm2 and length = 20 cm. If one of the solenoids has 300 turns and the other 400 turns, their mutual inductance is ? ...

An air bubble of volume V is released from the botoom of a lake which has depth of 11m. find the volume of the bubble at the surface of the lake. the water ha s density 1000 kg/m3. at the release point of the bubbleand at the ...

If a body is positively charged then a It may have more protons b It may have only protons c It may have only electrons d Both a and b ...

A thin glass (refractive index 1.5) lens has optical power of -5D in air . Its optical power in a liquid medium with refractive index 1.6 will be ? 1)2D 2)-2D 3)-1D 4)1D ...

at ideal diatomic gas goes througha process where its pressure is inversely proportional to its temperature. a]calculate molar specific heat for the process. b] find the work dne by 2 moles of the gas if its temperature chang ...

2 moles of an ideal diatomic gas is taken through PT=constant. its temperature is increased from T to 2T. find the work done by the system. ...

why isn't potential energy corresponding to a non-conservative force defined ...

A:we can shield a body from gravitational influence of nearby matter by putting it inside a hollow sphere or some other means. R:We can shield a charge from electrical forces by putting it inside hollow conductor this is not ...

a thin nonconducting ring of radius R has a linear charge density f=f0cosα , where f0 is a constant , α is the azimuthal angle . find the electric field strength at the centre of the ring . CAN sombody tell me what is the a ...

In nonstretchable strings mechanical waves are always transverse , that too when the the string is under tension .Explain why?? I am sorry if i have posted this question in "mechanics" !! i don't know where to post the waves ...

HCV(CIRCULAR MOTION) WORKED OUT EXAMPLE-12 HOW TO RESOLVE TENSION ALONG RADIUS OC.? ...

a photo cell is illuminated by a small bright source placed1m away , d number of electrons emmited by photocathode wud ...

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which of the following symptoms are likely to affect an astronaut in space?? a)swollen face b)swollen feet c)headache d)orientational problem ...

we know that electric lines of force never intersect but do they touch each other ? if yes , please give an example ; if no please give the explanation !! ...

A BODY OF MASS 2 KG IS LYING ON A ROUGH INCLINED PLANE OF INCLINATION 30 DEGREES.FIND MAGNITUDE OF FORCE PARALLEL TO INCLINE NEEDED TO MOVE BLOCK DOWN THE INCLINE.COEFFICIENT OF STATIC FRICTION=0.2 ...