Energy Work Power

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What is energy?

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Energy is the ability to do work or cause change. It exists in various forms, such as kinetic, potential, thermal, and chemical energy.

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What is kinetic energy?

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Kinetic energy is the energy of an object due to its motion, calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

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What is potential energy?

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Potential energy is the stored energy of an object due to its position or state, commonly associated with gravitational potential energy, calculated as PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

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What is work in physics?

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Work is done when a force causes an object to move. It is calculated as Work = Force x Distance, measured in joules (J).

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What is the formula for calculating work?

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The formula for calculating work is Work = Force x Distance x cos(θ), where θ is the angle between the force and the direction of motion.

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What is the relationship between work and energy?

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Work done on an object results in a change in its energy. If work is done on an object, its energy increases; if work is done by the object, its energy decreases.

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What is the principle of conservation of energy?

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

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How does a pendulum demonstrate kinetic and potential energy?

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A pendulum converts potential energy at its highest point into kinetic energy at its lowest point, illustrating the transformation between these two forms of energy.

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What is the unit of work?

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The unit of work is the joule (J), which is equivalent to one newton-meter (N·m).

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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 in kilograms and v is velocity in meters per second.