Podcast
Questions and Answers
What is the definition of power?
What is the definition of power?
- The rate at which work is done or energy is transferred. (correct)
- The displacement of an object.
- The total energy possessed by an object.
- The force acting on an object.
What is the standard unit of power?
What is the standard unit of power?
- Joule (J)
- Meter (m)
- Newton (N)
- Watt (W) (correct)
What is the formula to calculate power (P) when work (W) and time (t) are known?
What is the formula to calculate power (P) when work (W) and time (t) are known?
- $P = W / t$ (correct)
- $P = W + t$
- $P = W * t$
- $P = t / W$
In the context of work done, what does 'θ' represent in the formula $W = F * d * cos(θ)$?
In the context of work done, what does 'θ' represent in the formula $W = F * d * cos(θ)$?
What is the unit of work?
What is the unit of work?
What is energy?
What is energy?
What is the formula for kinetic energy (KE)?
What is the formula for kinetic energy (KE)?
What does efficiency measure?
What does efficiency measure?
What is the formula for Gravitational Potential Energy (GPE)?
What is the formula for Gravitational Potential Energy (GPE)?
If force and velocity are known, which formula is used to calculate the power?
If force and velocity are known, which formula is used to calculate the power?
Flashcards
Power
Power
The rate at which work is done or energy is transferred, measured in watts (W).
P = W / t
P = W / t
The formula for power when work done and time are known: Power equals work divided by time.
P = F * v
P = F * v
The formula for power when force and velocity are known: Power equals Force multiplied by velocity.
Work
Work
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Work Formula
Work Formula
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Energy
Energy
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Kinetic Energy
Kinetic Energy
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Potential Energy
Potential Energy
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Gravitational Potential Energy (GPE)
Gravitational Potential Energy (GPE)
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Efficiency (η)
Efficiency (η)
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Study Notes
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Description
Explore the definitions, units, and formulas for power, work, and energy. Understand the relationships between these concepts and how to calculate them. Key formulas for kinetic and potential energy are covered.
