plus two physics

The moment of inertia of a body about an axis is equal to its moment of inertia about a parallel axis through its centre of gravity plus the product of the mass of the body and the square of the perpendicular distance between the two parallel axe..

Significant Figures - It is the expression of accuracy of a physical quantity. The value in digits, accurately known in a measurement plus one digit that is not certain, is called significant figures. Significant figures is directly proportional to the accuracy of measurement. E..

. We use the symbol 'U' for internal energy. During a change of state of the system, the internal energy may change from an initial value U 1 to a final value U 2 . We denote the change in internal energy as..

Statement - The moment of inertia of a body about an axis is equal to its moment of inertia about a parallel axis through its centre of gravity plus the product of the mass of the body and the square of the perpendicular distance between the two parallel axe..

>To increase the turning effect of force, it is not necessary to increase the magnitude of the force itself. If the total external torque on the system is zero, its angular momentum remains constant. This is known as the principle of conservation of angular momentum. If angular momentum remains con..

Average Power Associated with LCR Circuit in Series - In an electrical circuit, energy is supplied by the source of EMF, stored by the capacitive and inductive elements and dissipated in resistive elements. Conservation of energy requires that, at any particular time, the rate at which energy is su..

. Thermal equilibrium now demands that E = a I ....................... (2) Where E is the radiant energy per unit time per unit area emitted by the (non-black) body. It follows from Eq.(1) that ....................... (3) But in terms of emissivity e already defined ........................

Horizontal range is give by This shows that there are two angles of projection for the same horizontal range i.e., J and (90 o - J ) with the horizontal. The projectile will cover the same horizontal range whether it is thrown at an angle (90 0 ..

Torque in Two and Three Dimensions - If a force acts on a particle P, then the torque acting on the particle with respect to the origin O is given by where gives the position of the particle with reference to the origin O. If both and lie in the XY plane the..

A body is said to be in motion if its position changes with respect to its surrounding. In order to completely describe the motion of such objects, we need to specify its position. For this, we need to know the position coordinates. In some cases, three position coordinates are required, in some ca..