Question

define the question​

Answer 1

Answer:

In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. ... For systems which do not have time translation symmetry, it may not be possible to define conservation of energy.

Answer 2

✰Question ✰

▪ State law of conservation of energy.

✰Answer ✰

➠ The law of conservation of energy state that energy can neither be created or nor destroyed. It can only be changed from one form to another.

➧For example :-

▪ Plant use sunlight for photosynthesis. In this process light energy gets converted to chemical energy (as the energy stored in plant food) when plant die the energy stored in them is not lost. For example dead plant buried below the Earth surface for millions of years got converted to fuel such as coal ,petroleum and gas.These have chemical energy stored in them .When these fuels are burnt the chemical energy is converted into heat energy.

▪ Snow deposited at high altitudes melts and the water so formed flows down to the seas. In this process the potential energy of the water is converted into kinetic energy. We convert the kinetic energy of water to electrical energy in hydroelectric power plants.

From this examples it's prove that Energy can neither be created or nor be destroyed .It can only change from one form to another form.