Energy

Work done by a Constant Force The work done by a constant force is proportional to the force applied times the displacement of the object.…

Workless Force If component of displacement along the direction of force is considered instead of considering applied force along displacement, then according to figure, W…

Transformation of Energy Energy is present in different forms in this universe. Different forms of energy are related to one other. It is possible to…

Energy is the capability to do work. Energy comes in diverse forms: Heat (thermal), Light (radiant), Motion (kinetic) etc. Energy is defined as ability to…

When a body can work, it is considered that it has energy. Energy is measured by the total amount of work that a body can…

The absorptive power of a body (or a surface) is defined as the ratio of the energy absorbed in a given time (or in a…

Pyrheliometer is an instrument used to measure the quantity of heat radiation and solar constant. It is a type of actinometer that can measure solar…

The Sun is a perfect black body of radius r and surface temperature T. According to Stefan’s law, the energy radiated by the Sun per…

The solar constant is the amount of radiant energy received per second per unit area by a perfect black body on the Earth with its…

Isaac Newton created his revolutionary Law of Cooling in the 17th century. Newton s law of cooling states that the rate of cooling of a…