Physics

Spring balance works on the principle of Hooke’s law. Hooke’s law states that the strain of the material is proportional to the applied stress within the elastic limit of that material.

The amount of energy is directly proportional to the photon’s electromagnetic frequency and thus, equivalently, is inversely proportional to the wavelength. The higher the photon’s frequency, the higher its energy. Equivalently, the longer the photon’s wavelength, the lower its energy.

A White Hole is a hypothetical hole in outer space from which energy, stars, and other celestial matter emerge or explode. It is a theoretical celestial object into which matter is funneled from a black hole.

Gasoline is a colorless petroleum-derived flammable liquid that is used primarily as a fuel in spark-ignited internal combustion engines. It consists mostly of organic compounds obtained by the fractional distillation of petroleum, enhanced with a variety of additives. It is also called as Petrol. It has chemical potential energy, in combustion it is turned into light, sound, heat and kinetic energy.

The weight W, acts vertically downward and the normal force, N acts vertically upward. The frictional force, F, of the road acts horizontally in the direction of which the cyclist is turning. The frictional force provides the centripetal force necessary to turn the cyclist. But the frictional force also produces a torque that will cause the rider and bicycle to tip outwards. When the cyclist lean inwards the normal force of the road does not act through the center of gravity thus producing an opposite torque that cancels out the torque provided by the frictional force. Thus there is no tendency for the cyclist to tip outwards.

Moderator is required in a Nuclear reactor to slow down the neutrons produced during the fission reaction so that the chain reaction can be sustained. Heavy Water is an excellent moderator due to its high moderating ratio and low absorption cross section for neutrons.

Two vectors and are said to be equal, if they have the same magnitude and direction, Also same positions of their initial points.