Class 3 Flashcards
1
Q
What is formula for bouyancy?
A
FB= density of fluid x Vsubmerged x g
2
Q
What must occur for balloons to float?
A
density of balloon must be less than air
3
Q
what are the upward forces and downward forces of balloon?
A
upward force: buoyancy
downward force: drag force and gravitational force
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).
5
Q
What is the boiling point of water?
A
100 degrees C
6
Q
Which gas has the lowest boiling point ?
A
helium
7
Q
what temperature is water denser at?
A
4 degrees C
8
Q
What is condensation ?
A
phase change from gas to liquid
9
Q
what is deposition ?
A
phase change from gas to solid
10
Q
A
