Chapter 5 Flashcard - Work, Power and Machines
Flashcard
•
Physics
•
8th - 11th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a pulley?
Back
A pulley is a simple machine that consists of a rope that fits into a groove in a wheel.
2.
FLASHCARD QUESTION
Front
What is the unit used to measure power?
Back
The unit used to measure power is the Watt.
3.
FLASHCARD QUESTION
Front
In which situation is work not done?
Back
Work is not done when holding a 20-pound box above the floor.
4.
FLASHCARD QUESTION
Front
What is a machine?
Back
A device that makes work easier is called a machine.
5.
FLASHCARD QUESTION
Front
What is the formula for work?
Back
The formula for work is Work = force x distance.
6.
FLASHCARD QUESTION
Front
What is the definition of work in physics?
Back
Work is defined as the transfer of energy that occurs when an object is moved over a distance by an external force.
7.
FLASHCARD QUESTION
Front
What is the relationship between work and energy?
Back
Work is a measure of energy transfer; when work is done on an object, energy is transferred to that object.
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