Class 3 Flashcards

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1
Q

What is formula for bouyancy?

A

FB= density of fluid x Vsubmerged x g

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2
Q

What must occur for balloons to float?

A

density of balloon must be less than air

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3
Q

what are the upward forces and downward forces of balloon?

A

upward force: buoyancy
downward force: drag force and gravitational force

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4
Q

Describe the Bernoulli effect

A

fluid flowing faster through a narrow segment of a hydraulic system has a lower internal pressure (Bernoulli Effect).

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5
Q

What is the boiling point of water?

A

100 degrees C

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6
Q

Which gas has the lowest boiling point ?

A

helium

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7
Q

what temperature is water denser at?

A

4 degrees C

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8
Q

What is condensation ?

A

phase change from gas to liquid

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9
Q

what is deposition ?

A

phase change from gas to solid

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10
Q
A
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