Question

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Write something on Law of conservation of energy.​

Answer 1

Answer:

The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it's added from the outside. This is particularly confusing in the case of non-conservative forces, where energy is converted from mechanical energy into thermal energy, but the overall energy does remain the same. The only way to use energy is to transform energy from one form to another.

The amount of energy in any system, then, is determined by the following equation:

UT=Ui+W+Q

UT is the total internal energy of a system.

Ui is the initial internal energy of a system.

W is the work done by or on the system.

Q is the heat added to, or removed from, the system.

It is also possible to determine the change in internal energy of the system using the equation: ΔU=W+Q

Answer 2

$\mathtt\red{Required \: Answer:-}$

• Law of conservation of energy states that energy can neither be created nor destroyed. However, energy can be transformed from one form to another.
• Energy is always conserved. That means when work is done, the total amount of energy remains constant.
• For example:- Green plants absorb light energy from the sun and transform it into chemical energy of food. When this food is eaten by animals, this chemical energy of food is transformed into heat energy and other forms of energy.
• Energy changes from one form to another but the total energy remains the same or is conserved.
• Transformation of energy from one form to another is known as transformation of energy.