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https://youtu.be/YWDCkKxOwP0

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https://youtu.be/AeycxNwwiNs

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https://youtu.be/k4b3oxO0WqE

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The ratio of outputs turns to inputs for a pair of gears

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The ratio of output force divided by input force.

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A rotating wheel with teeth that transfers motion and forces to other gears or objects.

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A stiff structure that rotates around a fixed point called a fulcrum.

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An unpowered mechanical device that accomplishes a task with only one movement.

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forces,energy, or power provided by the machine.

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forces, energy, or power supplied to make a machine accomplish a task.

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A device with moving parts that work together to accomplish a task.

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A unit of power equal to 746 watts.

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A unit of power equal to 1 joule per second.

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The rate of doing work or moving energy. Power is equal to energy divided by time.

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The ratio of usable output work divided by total input work. Efficiency is often expressed as a percent, with a perfect machine having 100 percent efficiency.

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The work that an object does as a result of work input.

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The work that is done on an object

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Energy can never be created or destroyed, only transforemed into another form. The total amount of energy in the universe is constant.

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Chemical Energy--> Potential Energy--> Kinetic Energy--> Thermal Energy

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Kinetic Energy is energy of motion

Formula:
E=1/2m*v to the second power

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Work is the transfer of energy that results from applying a force over a distance. Formula: work= Force*Distance.

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Potential Energy is energy due to position.
Formula:
E=m*g*h

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Elastic Energy is a form of energy that is stored or released when an object changes shape or deforms.

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Radiant Energy is a form of energy that is represented by the electromagnetic spectrum.

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Nuclear Energy is a form of energy that is stored in the nuclei of atoms.

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Chemical Energy is a form of potential energy that is stored in molecules.

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Mechanical Energy is a form of energy that is related to motion or position. Potential and Kinetic energy are examples.

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A joule is a unit of energy. One joule is enough to push with a force of one newton for a distance of one meter.

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Energy is a quantity that describes the ability of an object to change or cause changes