Recently Active Physics Questions

Q51(HCV). A block of mass m and having charge q is placed on a smooth horizontal table and is connected to a wall through an unstressed spring of spring constant k as shown in the figure. A horizontal electric field E paralle ...

the dimensional formula M L^2 Q^-1 T^-1corresponds to? (A) magnetic flux (B)electric flux (C) energy density in e.m waves (D) inductance ...

Here's the doubt When a fully charged capacitor is connected across an uncharged one, is total energy of the system of the two capacitors conserved? If no then where and how is it lost? Thanks for your replies. ...

IF different batteries of different emf are joined in parallel...then what is the equivalent emf? suppose 4 batteries of emf=1,2,3 and 4 respectively are joined in parallel then what is the equivalent emf? ...

plese help *Image* ...

consider a metal disc with a hole in the centre. when the disc is heated will the radius of the hole at centre increase or decrease? ...

Two pendulums with natural frequencies f1 and f2 are released in phase at same instant of time. After what interval will they come in phase again? a) 1/f1 + 1/f2 b) 1/f1 - 1/f2 c) 1/(f1.f2) d) L.C.M of 1/f1 and 1/f2 ...

A flowerpot is knocked off a window ledge from a height d = 20.0 m above the sidewalk. It falls toward an unsuspecting man of height h = 1.75 m who is standing below. Assume the man requires a time interval of t = 0.3 s to re ...

a conducting wire moves normally in a magnetic field with a uniform speed V..what will be its speed after it gets out of the field?? ...

A cubical block of mass m and edge a slides down a rough inclined plane of inclination with a uniform speed. The torque of the normal force acting on the block about its centre is ? ...

A free 238U nucleus kept in atrain emits an alpha particles.When the train is stationary, a nucleus decays and a passenger measures that the separation between the alpha particle and the recoiling nucleus becomes at time t af ...

A body starts sliding (from rest) without friction down a hill of height h. In the beginning the body has potential energy and no kinetic energy; at the end the body has only kinetic energy. It follows from energy conservatio ...

A Block of mass M1 is kept on a Triangular wedge of mass M2 which is again kept on a larger triangular wedge of mass M3.How can we find the net acceleration. All the surfaces are Frictionless. ...

3 parallel metallic plates each of area A. charges q1,q2,q3 are given to them find the resulting charge distribution on the six surfaces *Image* i dont know how to approach please help ...

A clock face has charges -q,-2q,-3q,......-12q fixed at corresponding numerals on the dial .The clock hand do not disturb the net electric field due to point charges. At what time does the hour hand point the direction of net ...

in the geometrical method for solving projectile, how do we calculate the velocity with which the projectile hits the ground....? ...

→ → → → when A * B (A cross product B)= |A||B|sinθn(unit vector) the direction of the unit vector is taken like this *Image* then my problem is,why the direction of the unit vector is not taken in this direction? *Im ...

On full moon day, moon rises exactly when sun sets, say 6 p.m. in the month of June. At what time the moon will rise on very next day? a) 12/14 hours after 6 p.m. b) 14/12 hours after 6 p.m. c) 14/12 hours before 6 p.m. d) at ...

I want to know how to start preparation for NSEP? Please tell me books and which specific topics to prepare? ...

how to determine the components of mg of a block on an inclined plane...???? wat will be its θ ...? ...

If earth's escape velocity is 25,000 mph, the moon is 250.000 miles away, why did it take 75 hrs to get there? at 25,000 mph it should only take 10 hrs to the moon ...

1. A particle moves in a region having uniform magnetic field and a parallel, uniform electric field. At some instant, the velocity of the particle is perpendicular to the field direction. The path of the particle will be a) ...

i got 2493 state rank and 145000 air i am from karnataka will i get a seat in nit-surathkal ...

a rod AB with A(a/2,0) and B(a/2+L,0) and another rod CD with C(-a/2,0) and D(-a/2-L,0) are placed on the x axis.Find the electric force between them ...

*Image* How to approach these problems? [7] ...

Q. The plates of a capacitor are 2 cm apart. An electron-proton pair is released somwhere in the gap between the plates and it is found that the proton reaches the negative plate at the same time as the electron reaches the p ...

check the link------------------ http://results.gov.in/result2announced.aspx ...

The mass density per unit area of each circle is " σ " , and all the surfaces are frictionless . It is also given that the radius of each circle is " R " . Find the force required to keep the two bottommost circles together ...

Q: An interstellar explorer discovers a remarkable planet made entirely of an uniform incompressible liquid of density " ρ ". The radius of the planet is " R " and Accn. due to gravity at surface is " g ". What is the pressu ...

A spherical tank of 1.2m radius is half filled with oil of relative density 0.8. If the tank is given a horizontal acceleration of 10 m/s2. Calculate the maximum pressure on the tank. ...