# Recently Active Physics Questions

• A force of 100 N is applied on a stationary block of mass 3kg as shown in figure. I f the coefficient of frictioon between the surface and the block is 0.25 what is the magnitude anddirection of frictional force what is the m ...
replied2008-12-19 07:43:04
• *Image* in the shown figure a) if both ammeter &voltmeter are ideal,then reading of A is 0 & V is 10V b) if both A & V r ideal,reading of A=10A & v=0 c) if A is non ideal & V is ideal,then reading of A is less than 10 ...
replied2008-12-19 06:41:18
• *Image* find 1. potential diff btw D & E 2. current through branch BG 3. current through battery btw A & B. try to do wthout using Kirchoff's law ...
replied2008-12-19 06:35:32
• Four equal charges q0 are kept fixed on the vertices of a square of side 'a'. A charge q is kept at the center of the square. Then : a) charge q is in stable equilibrium b) charge q is not in stable equilibrium c) cha ...
replied2008-12-18 11:09:11
• In the arrangement shown in the figure,find the acceleration of M.The pulleys and strings are light! *Image* ...
replied2008-12-17 22:10:04
• a boat floating in a water tank is carrying a number of large stones. if the stones were unloaded into water , what will happen to the water level ?...give reason to it ! ...
replied2008-12-17 12:10:50
• a triangle is immersed in a liquid with its base towards the surface. how must we divide the triangle into two parts by a straight horizontal line such that equal thrust acts on the parts ? ...
replied2008-12-17 12:03:10
• *Image* will we consider the force due to weight of water at the base ...
replied2008-12-17 09:49:27
• According to one of the most popular theories of the origin of universe, the Big Bang theory, the universe began as a result of a colossal explosion of matter, antimatter and energy. After the big bang, everything was chaotic ...
replied2008-12-17 09:41:54
• ABCD is a track in the vertical plane AB and CD being smooth and concave upwards BC being an inclined plane with μs=0.3 , μk=0.2 and θ=tan-11/4. horizontal dist b/w B and C is 2 metres. if the particle is relea ...
replied2008-12-17 07:12:09
• Questions can have many errors :P *Image* *Image* *Image* *Image* ...
replied2008-12-17 00:28:32
• pb no1: A four kg block carrying a charge of 50microC. is connected to aspring for which k=100N/m. the block lies on a frictionless horizontal track and the system is in a uniform electric field E=5*105V/m. if the blo ...
replied2008-12-16 20:16:44
• *Image* find the pressure at point P ...
replied2008-12-16 13:52:08
• tessellations in domain theory can b symmetrical if an only if each sub domain is a cubical b cubical os symmetrical c hexagonal prismatic d any regular polyhedra i dono nythin bout it ??? i havnt undastud ques &# ...
replied2008-12-16 11:14:31
• consider a crude generalization for bohr theory for helium atom which assumes dat 2 elec are in same orbit but aiways on opp side of nucleous. bohr radius of elec in hydrogen atom=a energy in ground state=e fin 1. rad ...
replied2008-12-16 08:51:09
• n moles of a monoatomic gas initiall at temp t is enclosed in a cylindrical vessel fitted with a light piston. Surrounding air temp =Ts=5T and atmos pressure=P. Heat may be conducted btw the surrounding & the gas ...
replied2008-12-16 00:40:39
• The neutron which has no charge has a magnetic dipole moment.Is this possible? ...
replied2008-12-16 00:12:31
• check the correctness of the relation dimensionally: S(n)=u+1/2a(2n-1) Subtract 0.2 kg from 34 kg with due regard to significant figures. by what % should the pressure of a given mass of a gas be increased so as to decrea ...
replied2008-12-15 23:49:05
• is it possible to find B for a ring at a point at dist r from centre. r<R ...
replied2008-12-15 23:40:31
• CAN the trajectory of a charged particle in a electrostatic field coincide with a force line?f yes give some example ...
replied2008-12-15 21:49:14
• *Image* A liquid of density p is in bucket that spins with angular velocity w (omega). show that the pressure at radial distance 'r' from the axis is P = P° + pw2r2/2 where P° is the atmospheric pressure ...
replied2008-12-15 20:12:19
• can one cross a river if velo of river is greater than man's!!!!!!! ...
replied2008-12-15 08:56:26
• For the system at rest shown in fig., determine the accelerations of all the loads immediately after the lower thread keeping the system in equilibrium has been cut. Assume that the threads are weightless and inextensible, th ...
replied2008-12-15 07:29:28
• 3.9 Two towns A and B are connected by a regular bus service with a bus leaving in either direction every T minutes. A man cycling with a speed of 20 km h–1 in the direction A to B notices that a bus goes past him every 18 ...
replied2008-12-15 06:03:40
• When do you do get more wet - when you walk in the rain or when you run? ...
replied2008-12-15 04:51:13
• a physical quantity is related to four variables as Ω =( a^3.b^2 ) / √y . n the percentage errors in measurement of a,b,y,n are 1%,3%,4% and 2% respectively. if value of Ω is calculated as 3.763 unit from the given va ...
replied2008-12-15 04:37:06
• Prove rigorously that for an isoceles prism a ray of light falling on one side will suffer minimum deviation when angle of incidence= angle of emergence .. ...
replied2008-12-15 01:00:25
• A thermometer at rest in an ideal gas records a temperature T. The same thermometer when moving with a velocity V in the positive x-direction records a temperature T'. IF m is the mass of the gas molecule, then: a)T=T ...
replied2008-12-14 19:16:32
• In a free space the, a rifle of mass M shoots a bullet of mass m at a stationary block of mass M distance D away from it. When the bullet has moved through a distance d towards the block, the centre of mass of the bullet-bloc ...
replied2008-12-14 16:32:59
• Two particles of masses m1 and m2 in projectile motion have velocities v1 and v2 where velocities are vectors, at time t=0. They collide at time t, their velocities being v1' and v2' at time 2t. the value of modul ...
replied2008-12-14 16:25:45