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Flashcards on Work and Energy
Click on the flashcard to see the answer
What is work?
Work is the transfer of energy that occurs when an object is moved against a force.
What is energy?
Energy is the ability to do work or cause change.
What is the formula for calculating work?
Work = force × distance
What is the SI unit of work and energy?
The SI unit of work and energy is the joule (J).
What are the two types of mechanical energy?
The two types of mechanical energy are kinetic energy and potential energy.
What is the formula for calculating kinetic energy?
Kinetic energy = 1/2 × mass × velocity^2
What is the formula for calculating potential energy?
Potential energy = mass × gravity × height
What is the law of conservation of energy?
The law of conservation of energy states that energy cannot be created or destroyed, only converted from one form to another.
What is mechanical advantage?
Mechanical advantage is the ratio of output force to input force in a machine.
What is power?
Power is the rate at which work is done or energy is transferred.
What is the formula for calculating power?
Power = work / time
What is the SI unit of power?
The SI unit of power is the watt (W).
What is the difference between work and power?
Work is the transfer of energy, while power is the rate at which work is done or energy is transferred.
What are some examples of renewable energy sources?
Examples of renewable energy sources include solar energy, wind energy, and hydroelectric energy.
What are some examples of non-renewable energy sources?
Examples of non-renewable energy sources include fossil fuels like coal, oil, and natural gas.
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Test Your Knowledge
Which type of energy is associated with motion?
Potential energy
Kinetic energy
Mechanical energy
Thermal energy
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What is the unit of work and energy?
Kilogram
Meter
Joule
Second
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Which law states that energy cannot be created or destroyed?
Law of conservation of energy
Newton's Third Law
Ohm's Law
Boyle's Law
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What is the formula for calculating mechanical advantage?
Mechanical advantage = force × distance
Mechanical advantage = output force / input force
Mechanical advantage = mass × gravity × height
Mechanical advantage = work / time
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Which unit is used to measure power?
Newton
Joule
Watt
Pascal
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What is the relationship between work and time?
Directly proportional
Inversely proportional
Not related
Depends on the type of work
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Which energy source is considered renewable?
Solar energy
Coal
Oil
Natural gas
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What is the difference between work and power?
Work is the rate at which energy is transferred, while power is the transfer of energy
Work is the transfer of energy, while power is the rate at which work is done or energy is transferred
Work and power are the same thing
Work and power have no relation to each other
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Which type of energy is stored in an object's position or condition?
Potential energy
Kinetic energy
Mechanical energy
Thermal energy
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What is the formula for calculating kinetic energy?
Kinetic energy = mass × gravity × height
Kinetic energy = 1/2 × mass × velocity^2
Kinetic energy = force × distance
Kinetic energy = work / time
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