The primary energy exhibited is:
friction: Heat energy
Due to friction. there is heat loss in mostly all machines.
nuclear power plant: Nuclear energy
In nuclear power plant, fission or fusion of radio-active substances produces large amount of nuclear energy.
toaster element: Heat energy
Heat energy is produced in the toaster when electricity passes through the element. This is used to heat the toasts.
welding torch: Heat energy
The heat energy produced in the welding torch is used in welding.
eraser sitting on a desk edge: Potential energy
Potential energy is possessed by a body due to virtue of its height.
light bulb: Heat energy and light energy.
The element inside the bulb gets heated first and then light energy is produced.
campfire: Heat energy
Heat is produced and then light energy in case of campfire.
moving car: Kinetic energy
A moving body has kinetic energy.
lump of coal in a storage bin: Potential energy
A lump of coal in a storage bin has potential energy.
stick of TNT: potential energy
Stick of TNT is formed of explosive mixture. It contains potential energy.
