# PHYS 2001 Lecture Notes - Lecture 26: Iceberg, Prairie Dog, Bernoulli'S Principle

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16 Jun 2018
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Example: What volume percentage of an iceberg is underwater?
The iceberg is floating, so: WFB
=
WWf
=
mggmf
=
mmf=VVff
ρ
ρ
=
This is the volume of
ice under water.
f
f
V
V
ρ
ρ
=%7.91917.0
1000
917 ===
f
ρ
Almost 92% of the iceberg is under water!!!
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11.9-11.10 The Bernoulli Effect
The Bernoulli Effect is one topic we will study qualitatively which deals with fluids
in motion.
It is basically an energy conservation effect for a given volume of fluid.
2
2
2
2
1
21
2
1
2
1
1gyvPgyvP
ρ
ρ
ρ
ρ
+
The Bernoulli Equation
It demonstrates the relationship between pressure, speed, and height of a fluid.
Qliilifh dfflidi h ihflidd
Q
ua
li
tat
i
ve
l
y,
if
t
h
e spee
d
o
f
a
fl
u
id
i
ncreases, t
h
e pressure
i
n t
h
e
fl
u
id
d
ecreases.
This effect occurs in many situations: Airplanes
v
Shower curtains
Curve balls
Truck tar
p
s
v
1
v2
p
Prairie dog homes
Air flow
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## Document Summary

This is the volume of ice under water. Almost 92% of the iceberg is under water!! The bernoulli effect is one topic we will study qualitatively which deals with fluids in motion. It is basically an energy conservation effect for a given volume of fluid. It demonstrates the relationship between pressure, speed, and height of a fluid. Qualitatively, if the speed of a fluid increases, the pressure in the fluid decreases. h fl if h d f fl id i i l h i id d. This effect occurs in many situations: v v. It is a measure of how hot something is. We use thermometers to measure the temperature of something. Most rely on the fact that materials expand when heated. The two most commonly used are fahrenheit and celsius: Between the freezing and boiling points, we have 180 of and 100 oc. The kelvin temperature scale was introduced by a scottish physicist, lord kelvin, in the late 1800"s.

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