Question

If the experiment has been done correctly, you will have discovered that the density of water has a maximum value at a temperature of 4 °C. The density of water is often quoted as being 1.000 g cm-3 (or 1000 kg m-3) at this temperature. The density of ice at 0 °C is approximately 0.917 g cm-3 (or 917 kg m-3). An iceberg will therefore float because it is less dense than the fluid it is immersed in. Consider an iceberg of volume 1km3 (= 109 m3) at 0 °C.

1. According to Archimedes’ Principle, what volume of the iceberg will float below the water level if the water is at 4 °C? (Hints: (i) The buoyancy force depends on the volume that is submerged; (ii) what is the apparent weight when it floats?)

2. If the iceberg in question 3 melts, what volume will the meltwater from it occupy at a temperature of 4 °C? Compare this with your answer to Question 3.

3. The global average water temperature is approximately 16 °C. Using the density of water calculator, determine what volume the meltwater from the iceberg in the previous example will occupy at this temperature.

Answer #1

The density of gold = 19, 300 kg/m3 which is 19 times
the density of water. Can gold float on water?
Explain.
2/5 of the volume of a solid is under water of density =
1000 kg/m3; find the density of the solid; (c) the same solid
floats so that 3/5 of its volume is under liquid. Find the density
of liquid. Volume of the solid = 5.0 x 10-3 m3

A 500g piece of wood (specific gravity =.5) floats in water
(density=1.0 g/cm^3).
A. What fraction of its volume will be submerged?
B. A 500g iron weight (density = 7.9g/cm^3) is hung from the
bottom of the floating piece of wood. What fraction of the wood is
submerged now?

Density of water =1000kg/m^3 Conversion: 1000L =1m^3
A princess's ball falls down a well. The density of the well
water is a constant 1000 kg/m3. The ball has a 10 cm diameter.
a. If the ball sinks, what is the buoyant force on the ball?
b. If the ball floats, with half of it in and half out of the
water, what is its density?
c. If the ball weighs 350g, does it float or sink?

piece of cork is held partially submerged in water by a string
attached to its bottom. The weight of the
cork in air is 20.0 N. The tension in the string is 10.0 N.
(a) What is the buoyant force on the cork? (Newston's 1st
law)
(b) What is the volume of the cork under water? (Archimedes
Principle)
(c) If this volume is 20.0% of the total volume of the cork,
what is the density of the cork?
Oil of...

A displacer is a device used for level measurement. It operates
on the principle of weight change due to buoyancy as the level
changes. A displacer does not float. A typical displacer has
dimensions of 45.0 mm diameter by 400 mm long, and a mass of 1.38
kg. It is suspended vertically from a torque tube sensor.
a. What is the force exerted by the
displacer on the sensor if there is no liquid present?
b. What is the force...

1.)The Buoyant Force from a fluid to an object depends on which
of the following factors?
a.)The volume of the object
b.)The volume of the fluid
c.)The density of the fluid
d.)The density of the object
2.)Why did the Titanic sink after it hit an iceberg and water
rushed into the hull through the hole created by the
collision?
a.)The density of water has increased
b.)The density of the boat increased
c.)The mass of the boat has decreased
d.)The volume...

1. The density of
water is 1000 kg/m3. Compared to this, the
density of air at sea level is
approximately
1000 times less.
approximately 100
times less.
approximately 10
times less.
about the
same.
2. What is the gauge pressure at the bottom
of a 5 feet deep swimming pool? (Answer in Pa)
3.You are given the
task to determine the volume of an irregular shaped object. You
hang it on a scale and measure its weight to be 34...

As shown in the above figure, a solid object has a density of
1200 kg/m3 and a volume of 8.00x10^-5 m³. It is lowered on a string
into water and completely submerged without touching the container.
The density of water is 1000 kg/m3.
Keep 3 decimal places in all answers. (Don't use scientific
notations.)
Without the string, would the solid object sink in water or
float in water? No submission.
(a) What is the magnitude of the weight (in Newtons)...

1. Three objects have the same volume, one spherical, one
rectangular, and the other cylindrical. If you put these 3 objects
under water, how do their buoyant upward forces compare?
A.
According to Archimedes’ Principle, they are all subject to the
same amount of buoyant forces because they have the same volume
B.
The cylindrical object gets the most buoyant force because it
has a longer shape
C.
The rectangular object gets the most buoyant force because of
its flat...

Question 1
The pressure in a liquid is:
A)
independent of the depth
B)
linearly proportional to the depth
C)
proportional to the 3rd power of depth
D)
inversely proportional to the depth
E)
proportional to the 2nd power of depth
Question 2
The reason for floating of some objects in water is due to:
A)
First law of thermodynamics.
B)
Archimedes’ principle.
C)
Hydrogen bond.
D)
Einstein Energy principle.
E)
Earth magnetic poles.
Question 3
The reason for...

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