Recently Active Physics Questions

Q: A cone made of insulating material has a charge Q spread uniformly over it's sloping surface. Calculate the work done in bringing a small positive test charge ' q ' from infinity to the apex of the cone. The cone has a slo ...

A particle moves along the curve y=x2/2. Here x varies with time as x=t2/2.Where x and y are measured in metres and t in second. At t=2s the velocity of the particle is: (a)2 i - 4 j b) 2i + 4 j c) 4i +2j d) 4i - 2j ...

2 ends of a train with constant accelaration pass a certain point with velocity u & v, find with what velocity with which the mid point of the train will pass the same point ???? Is the answer is (v2+u2)/2 ???? ...

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Please show me the charges appearing on each faces. A dilelectric is kept inside two conductor as shown in figure. *Image* ...

is their any software/application available for arranging a LIST OF WORDS i have with me in same order as in a dictionary? ...

find the min. velocity with which an object must be projected horizontally so that it doesen't returns back to the surface acc to this link{ques c]}, ans shud be root [gr] http://www.targetiit.com/iit-jee-forum/posts/interest ...

What is the significance of negative work done? ...

a region in space contains charge which is distributed spherically such that the volume charge density p. p=a for r≤R/2 p=2a(1-r/R) for R/2≤r≤R p=0 for r≥R find the value of a in terms Q and R,where Q is the total cha ...

From a conduction ring of radius R which carries a charge Q (uniformly distributed) along its periphery a small length dl is cut off. The electric field at the center due to the remaining part is ? ...

A block is kept on the floor of an elevator at rest. The elevator starts descending with an acceleration of 12m/s2. The displacement of the block during the first 0.2 s after the start assuming g = 10 m/s2 is (a) 4 cm (b) 20 ...

One Kg of copper is drawn into a wire of 1mm diameter and a wire of 2 mm diameter. The resistance of the two wires will be in the ratio ...

a point charge q= -8 nC is located at the origin. Find the electric field vector at the point x=1.2m & y= -1.6m? ...

such an easy 2nd paper these swines have prepared .how does one expect correct judjement? ...

I C or Instantaneous Centre of Rotation It is a simple theory to make problems of specific type easier......... if wisely used..... It states When a body is moving on horizontal floor with pure rolling, then it is as good as ...

Actually I was reading Friction and in Rotation also I came across this term 'slipping'.Though I know the general meaning of slipping but I dont understand how it works.Like how is friction related to slipping and how is slip ...

A light rigid rod is placed on a smooth horizontal surface. Initially the end A begins to move vertically upward with constant velocity v and centre of the rod upward with a velocity v/2 having downward acceleration a/2. The ...

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A simple hcv sum with so much vectors is eating my head.... the concept is right but maths Consider a hypothethical magnetic field in a region B=B0er where er is the radial vector. A circlular loop of raidus a carrying a curr ...

!)A thin conducting wire of radius R has a charge +Q.show that the increase in the tension of the wire when a pt. charge +q is placed at the centre of the ring is given by T=qQ/ 8(pi)2(episilon)R2 2)A simple pendulum consists ...

As Subhomoy promised me he would help me with rotation.So I am starting a new thread to get my concepts clear with some help from Subhomoy Bakshi. Hope it helps all. Go ahead subhomoy. ...

Q: A water clock in ancient Greek is designed as a closed vessel with a small orifice " O ". The time is determined according to the level of water in the vessel. What should be the shape of the vessel for the time scale to b ...

27. Carbon, silicon and germanium have four valence electrons each. At room temperature which one of the following statements is most appropriate ? (a) The number of free electrons for conduction is significant only in Si and ...

If a charge q is placed at the centre of line joining two equal like charges Q,the system will be in equilibrium if q is a) -Q/2 b) -Q/4 c) +Q/2 d) +4Q Plz explain yur ans ...... ...

Why does the characteristic spectrum(they occupy the peaks) have more relative intensity than Continous spectrum?Secondly why does Kalpha occupy a higher peak than Kbeta whereas the energy gap in the latter case is more? ...

Ionisation energy of He+ is 19.6 × 10–18 J/atom. The energy of the first stationary state (n = 1) of Li2+ is? Using E = -2.18 x 10^-18 * Z2/n2 gives a wrong answer. What is the problem? ...

plzzz help me out with the basics of SHM & WAVES.... I am stilll very weak in this topic of physics... help me out with the basics of the topic... ...

Six charges 3 positive charges and three negative of equal magnitude are to be placed at the vertices of a regular hexagon such that the electric field at O is double the electric field when only one positive charge of same m ...

1. A solid cylinder of mass " M " and radius " R " and height " R " has a helical groove cut on it's surface with a helix angle of tan^{-1}\frac{1}{2\pi} . It can freely rotate about a vertical axis passing through the center ...

In IIT 2011, There was a question of Harmonic motion motion where and E is applied in right direction for the positively charged block. Now, There the frequency did not change and only mean position changed. However when the ...