Physics

If an object placed on a field in moved from one point back to the initial point then the force yields this amount of work as zero is called conservative force.

Internal energy, in thermodynamics, the property or state function that defines the energy of a substance in the absence of effects due to capillarity and external electric, magnetic, and other fields. Like any other state function, the value of the energy depends upon the state of the substance and not upon the nature of the … Read more

Echocardiography is a test of the action of the heart using ultrasound waves to produce a visual display, for the diagnosis or monitoring of heart disease.

Energy that is attained due to position, shape and motion of an object is mechanical energy.

If the pressure is applied to a liquid or a gas enclosed in a container from outside then this pressure is transmitted equally and acts perpendicularly on the surface of the container in contact with the liquid or gas.

Nuclear energy is the energy we get from nucleus of an atom by dividing it or attaching it with another nucleus.

When an object moves by rolling or revolving on a surface then friction that develops is called rolling friction. or, When an object moves by rolling on a surface then the friction that develops is called rolling friction.

The ratio of the amount of work done by a machine and total given energy is called efficiency of that machine.