physics 3

Now, repeat the whole experiment with castor oil (half kg) in the same vessel. Let its initial temperature be Again heat it exactly for two minutes (so that same amount of heat is supplied to castor oil). Note its temperature as The experiment may be repeated with different liquids (or solid pieces..

When X L < X C , tan q <0. Here, the voltage lags current and the AC circuit is capacitive dominated circuit. \ I = I o sin w t E = E o sin ( w t - q ) where = tan - 1 [X C -X L ]..

Calculate the value of constan..

: Curved surfaces can reflect sound waves. This reflection of sound waves is used in auditorium to spread the waves uniformly throughout the hall. Reflection of sound waves is done by using Sound Boards. The speaker is located at the focus of the sound boar..

In a static situation, when a conductor is charged, the excess charges reside only on the surface. If we consider any arbitrary volume inside a conductor, the electrostatic field on closed surface bounding the arbitrary volume is zero. Thus, the flux through the surface is zero. By Gauss's theorem..

The diagram shows a lever in use. (i) To which class of lever does it belong? Give one example of this class. (ii) Calculate its MA if AB = 2.0 m, AF = 20 cm. (iii) Calculate the effort needed to lift the load. Suggested answer : (i) Class I, example: scissors (ii) Load arm = AF = 20 cm. Effort arm..

Every particle of matter in the universe attracts every other particle with a force which varies directly as the product of their masses and inversely as the square of the distance between them. If m 1 and m 2 are the masses of two bodies separated by a distance d, then the force of attractio..

Also d = 5 x 10 - 3 m, therefore..

When a force acts on a particle that moves from a point 'a' to a point 'b' the work done by the force is given by the integral where is infinitesimal displacement along the particles path and q is the angle is the angle and at each point along the path. Since electrostatic forces are conservative f..