Recently Active Physics Questions

A steel ball initially at a temperature of 100kPa is heated from 20degree celcius to 120degree celcius keeping the volume constant. Find the pressure inside the ball. Coefficient of linear expansion of steel is 12*10^(-6) and ...

SUM 1::: a particle is projected at a speed u at anangle thita{-} wid the horizonatal consider a small part near the highest position and take it to b a approx circular arc Wht is d radius of this circle....??? ...

wht is reduced mass concept???where is it used??n how is it used??plz explain.,.. ...

A BLOCK OF MASS 2kg is pushed against a rough vertical wall with a force of 40N..coefficient of static fricion being 0.5. Another horizontal force of 15N ,is applied on the block in a direction parallel to the wall. Will the ...

a body of density ρ enters a tank of water of density σ after falling througgh height h. the max depth to which it sinks in water ...

*Image* a rod is aligned at a corner as in figure. no friction is there anywhere. it start to slide. prove that it would leave the vertical wall when it's tip is at a height 1/3rd of initial. edit:: the actual question as ...

a rod of mass M n lenght L is standing in vertical position,it is pushed with infinitimesly small force ,n fall down in a quarter circle without displacing its lower end then wat is the normal reaction when is at horizontal p ...

*Image* The Figure shows two rods BC and OA hinged from B and O respectively. Rod BC has a groove in which A of rod OA can slide smoothly. At a given instant,the rod BC has an angular velocity ω. The speed of end A of the ro ...

(P+a/V2) (V-b) =cT this is equation of state of real gas find dimensions of a just tell answer i wanna comfirm mine ...

a weight with a mass `m` is attached to the end of a string with a length of length `l` fastened to a vertical rod rtating with a angular velocity `ω`.another string of the same length as the first and carrying on its end an ...

*Image* a spool with thread wound on it, of mass 'm', rests on a rough horizontal surface. its moment of inertia relative to it sown axis is equal to I=γmR2 , where γ is a numerical factor, and R is the outside ...

Is a doped semi-conductor electrically neutral w.r.t. the original semi-conductor as it has one extra electron or hole per atom in it's lattice? ...

If 7 colors of white light have different refractive indices in a medium then they should have different refractive indices in air as well. Then why don't we see splitting of colors in air. ...

how should be a pencil held above a table to obtain a sharp shadow if the source of light is a daylight lamp in the form of a long tube secured on the ceiling. ...

a particle is acted by force of constant magnitude whiich is always perpendicular to velocity of particle . the motion of the particle takes place in plane. it follws that: (a)velocity constant (b acceleration constant (c)K.E ...

a ball of mass 0.2kg is thrown vertically upward by applying a force by hand. if the hand move 0.2 metre above while applying the force and bal;l goes to distance 2. find f ...

how can a real landscape on a photograph be distinguished from its reflection in quiet water? ...

I personally dont like pseudo force.. (Used to love it when I was in class xi) but when i came to class xii.. i started to hate it.. Yeah there are some problems which are solved in a flash by using pseudo force.. but there a ...

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this was toughest question in inpho2008 others were too easy try part b Sunlight falls on the convex surface of the plano - convex lens of aperture 0.080 m. The radius of curvature of the convex surface of the lens is 0.100 m ...

A faulty barometer contains some amount of air and the saturated water vapour. It reads 74 cm when the atmospheric pressure is 76 cm if Hg and reads 72.10cm when the atmospheric pressure is 74cm. Saturation vapour pressure is ...

*Image* The Magnetic feild is B(j)... What is the velocity with which the cylinder reaches the ground?? ...

1. We define three quantities as follow: A = mec2, B = h/mec, C = e2/2Ç«0ch Where me is electron mass and other symbols have their usual meanings. For the hydrogen atom, express the radius of the nth Bohr orbit rn ...

why tuning fork can form resonance only with closed pipe and not with open pipe?? ...

One end of a spring of unstretched length L and force constant k is fixed to a pivot, and a body of mass m is attached to its other end The spring is released from an unstretched, horizontal position, as shown in figure What ...

*Image* threads of lengths h1 ,h2 and h3 are fastened to the vertices of a homogenous triangular plate of weight W The other ends are fastened to a common point,as shown in the figure What is the tension in each thread, expre ...

Calculate the value of γ =Cp/Cv for a gaseous mixture consisting of v1=2.0 moles of oxygen and v2=3.0 moles of carbon dioxide. The gases are assumed to be ideal! ...

what is partial fraction ? ...

*Image* 4 concentric hollw spheres of radii R(1),2R(2),3R(3),4R(4) has given the charges as shown then 1&3,2&4 were connected 1. find charge on the inner surface of 3rd conductor 2. charge on the forth conductor 3. the potent ...

a glass capillary tube with an internal diameter of 0.5 mmis immersed into water.the top end of the tube projects by 2cm zbove the surface of the water.what is the shape of the miniscus? ...