The total amount of energy in The Universe never changes, but availability of each different type of energy to do work and change tremendously what best explains this change in available energy a energy can only be created. The nuclear reactions be energy is always converted with 100% efficiency say energy is regularly changing from one form to another day. Energy can be transferred as heat only.

Answer 1

The best explanation for the change in available energy in different forms is that energy can be converted from one form to another, but cannot be created or destroyed. This concept is known as the conservation of energy. Energy can change from one type to another through various processes such as chemical reactions, nuclear reactions, or conversions between potential and kinetic energy.

For example, nuclear reactions involve the conversion of nuclear potential energy into other forms such as thermal energy, electromagnetic energy, or kinetic energy. These conversions may not always be 100% efficient, meaning there might be some loss of energy in the process.

Similarly, energy can be transferred as heat from one object to another due to temperature differences. Heat transfer occurs through mechanisms such as conduction, convection, and radiation.

Overall, the availability of different types of energy to perform work or do useful tasks can vary depending on the conversion processes and the efficiency of energy transfer. However, the total amount of energy in the Universe remains constant.