Law of conservation of energy

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What is the law of conservation of energy?

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The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

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What are the three forms of energy transformation that occur in a hand generator?

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Mechanical energy is transformed into electrical energy, which is then transformed into light energy.

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What is the standard unit for measuring energy?

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The standard unit for measuring energy is Joules.

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If the mass of an object is doubled, what happens to its kinetic energy?

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The kinetic energy will increase, as kinetic energy is proportional to the mass of the object.

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What is radiation in the context of energy transfer?

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Radiation is the transfer of energy through electromagnetic waves, such as light or heat.

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What is the difference between potential energy and kinetic energy?

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Potential energy is stored energy based on an object's position, while kinetic energy is the energy of an object in motion.

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How does energy conservation apply to a closed system?

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In a closed system, the total energy remains constant; energy may change forms but the total amount does not change.

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What is an example of energy transformation in a light bulb?

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In a light bulb, electrical energy is transformed into light energy and thermal energy.

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What happens to energy during a car crash?

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During a car crash, kinetic energy is transformed into other forms of energy, such as sound, heat, and deformation energy.

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What is the formula for calculating kinetic energy?

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The formula for calculating kinetic energy is KE = 1/2 mv², where m is mass and v is velocity.