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14 Cards in this Set
- Front
- Back
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What are the 6 types of forces?
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Tension force, friction force, elastic force, gravitational force, electrostatic force, magnetic force
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Are mass and weight proportional?
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Yes
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What are balanced forces?
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Forces that are equal in strength and in opposite direction; they do not change the motion of an object
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What are unbalanced forces?
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Forces that cause a change in the speed or direction of an object
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Can a gas be compressed?
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Yes because there is already lots of space in between the particles
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Can liquids be compressed?
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Not really because there is no space for the particles to move closer together
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What is the calculation for pressure?
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P= F/A
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A student sings on stage while standing on a 2 by 2 m platform. If the student weighs 800 N, what pressure does the platform put on stage?
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200 Pa
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A large cement block is carried in the back of a pick up truck. The bottom of the cement block has dimensions of 8.5 by 4 m and weighs 23 800 N. What pressure does it put on the truck?
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700 Pa
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What is adhesion?
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The attraction between the molecules of two different substances in contact with each other
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What is cohesion?
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The strength with which the particles of an object or fluid attract each other
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What is viscosity?
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The resistance of a fluid to flow; the slower the flow, the greater the viscocity
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What is the flow rate for liquids?
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Heated= less viscosity
Cooled= higher viscosity |
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What is the flow rate for gases?
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Heated= higher viscosity
Cooled= lower viscosity |
