What is not true about energy?a)Energy can be created.b)Energy can mov...
Obviously, energy can not be created nor be destroyed .
But it can be transferred from one form to another.
What is not true about energy?a)Energy can be created.b)Energy can mov...
Introduction:
Energy is a fundamental concept in physics that is defined as the ability to do work or cause change. It is present in various forms and can be transferred, transformed, or stored. However, the statement that energy can be created is not true. This can be explained by the principle of conservation of energy.
Conservation of Energy:
The principle of conservation of energy states that energy cannot be created or destroyed, but it can only be transferred or transformed from one form to another. This principle is based on the first law of thermodynamics, which states that the total energy of a closed system remains constant.
Energy Transformations:
Energy can be transformed from one type to another. This is evident in various everyday examples. For instance:
- When a person eats food, the chemical energy in the food is transformed into mechanical energy as the person performs physical activities.
- When a ball is thrown upwards, the kinetic energy of the ball is transformed into potential energy as it reaches its highest point.
- In a light bulb, electrical energy is transformed into light and heat energy.
Energy Transfer:
Energy can also move from one object to another. For example:
- When a person hits a ball with a bat, the kinetic energy from the person's swing is transferred to the ball, causing it to move.
- When the Sun's rays reach the Earth, radiant energy is transferred to the Earth's surface, warming it up.
Energy Storage:
Energy can be stored in various forms. Some examples include:
- Potential energy can be stored in objects based on their position relative to other objects. For example, a stretched spring stores elastic potential energy.
- Chemical energy can be stored in batteries, fuel, or food.
- Thermal energy can be stored in hot objects or substances.
Conclusion:
In conclusion, energy is a fundamental concept in physics that follows the principle of conservation. While energy can be transformed, transferred, and stored, it cannot be created or destroyed. The statement that energy can be created is not true and contradicts the principle of conservation of energy.
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