## College Physics Study Set 7

Physics & Astronomy

## Quiz 9 :

Solids and Fluids

Looking for Introductory Physics Homework Help?

Q21 Q21 Q21

What is the total force on the bottom of a 2.0-m-diameter by 1.0-m-deep round wading pool due to the weight of the air and the weight of the water? (Note the pressure contribution from the atmosphere is 1.0 * 10

^{5}N/m^{2}, the density of water is 1 000 kg/m^{3}, and g = 9.8 m/s^{2}.)Free

Unlocked

Multiple Choice

Q26 Q26 Q26

Dams at two different locations are needed to form a lake.When the lake is filled, the water level will be at the top of both dams.The Dam #2 is twice as high and twice as wide as Dam #1.How much greater is the force of the water on Dam #2 than the force on Dam #1? (Ignore atmospheric pressure; it is pushing on both sides of the dams.)

Free

Unlocked

Multiple Choice

Q31 Q31 Q31

A piece of aluminum has density 2.70 g/cm

^{3}and mass 775 g.The aluminum is submerged in a container of oil of density 0.650 g/cm^{3}.A spring balance is attached with string to the piece of aluminum.What reading will the balance register in grams (g) for the submerged metal?Free

Unlocked

Multiple Choice

Q37 Q37 Q37

The bottom of a flat-bottomed aluminum boat has area = 4.0 m

^{2}and mass = 60 kg.If two fishermen and their fishing gear with total mass of 300 kg are placed in the boat, how much lower will the boat ride in the water? (H_{2}O density = 1.0 * 10^{3}kg/m^{3})Free

Unlocked

Multiple Choice

Q38 Q38 Q38

Legend says that Archimedes, in determining whether or not the king's crown was made of pure gold, measured its volume by the water displacement method.If the density of gold is 19.3 g/cm

^{3}, and the crown's mass is 600 g, what volume would be necessary to prove that it is pure gold?Free

Unlocked

Multiple Choice

Q50 Q50 Q50

An ideal fluid, of density 0.90 * 10

^{3}kg/m^{3}, flows at 6.0 m/s through a level pipe with radius of 0.50 cm.The pressure in the fluid is 1.3 * 10^{5}N/m^{2}.This pipe connects to a second level pipe, with radius of 1.5 cm.Find the speed of flow in the second pipe.Free

Unlocked

Multiple Choice

Q52 Q52 Q52

Water (density = 1 * 10

^{3}kg/m^{3}) flows at 15 m/s through a pipe with radius 0.040 m.The pipe goes up to the second floor of the building, 3.0 m higher, and the pressure remains unchanged.What is the speed of the water flow in the pipe on the second floor?Free

Unlocked

Multiple Choice

Q54 Q54 Q54

Air pressure is 1.0 * 10

^{5}N/m^{2}, air density is 1.3 kg/m^{3}, and the density of soft drinks is 1.0 * 10^{3}kg/m^{3}.If one blows carefully across the top of a straw sticking up 0.100 m from the liquid in a soft drink can, it is possible to make the soft drink rise half way up the straw and stay there.How fast must the air be blown across the top of the straw?Free

Unlocked

Multiple Choice

Q59 Q59 Q59

The Garfield Thomas water tunnel at Pennsylvania State University has a circular cross-section that constricts from a diameter of 3.6 m to the test section, which is 1.2 m in diameter.If the speed of flow is 3.0 m/s in the large-diameter pipe, determine the speed of flow in the test section.

Free

Unlocked

Multiple Choice

Q63 Q63 Q63

A Venturi tube may be used as the inlet to an automobile carburetor.If the inlet pipe of 2.0 cm diameter narrows to 1.0 cm diameter, what is the pressure drop in the constricted section for airflow of 3.0 m/s in the 2-cm section? (Assume air density is 1.25 kg/m

^{3}.)Free

Unlocked

Multiple Choice

Q66 Q66 Q66

A fluid is drawn up through a tube as shown below.The atmospheric pressure is the same at both ends.Use Bernoulli's equation to determine the speed of fluid flow out of the tank.If the height difference from the top of the tank to the bottom of the siphon is 1.0 m, then the speed of outflow is:

Free

Unlocked

Multiple Choice

Q75 Q75 Q75

Spherical particles of density 2.0 g/cm

^{3}are shaken in a container of water (viscosity = 1.0 * 10^{-3}Ns/m^{3}).The water is 8.0 cm deep and is allowed to stand for 30 minutes.What is the greatest terminal velocity of the particles still in suspension at that time?Free

Unlocked

Multiple Choice

Q80 Q80 Q80

A container is filled with water and the pressure at the bottom of the container is P.Then the container is emptied halfway and topped off with oil of density 0.80 * 10

^{3}kg/m^{3}, which floats on top of the water.What is the pressure at the bottom of the container now?Free

Unlocked

Multiple Choice

Q81 Q81 Q81

At a pressure of 1 atmosphere a column of mercury in a barometer is supported to the height h = 0.76 m.The density of mercury is 13.6 * 10

^{3}kg/m^{3}.A barometer of similar design filled with water would support a column of water how high at a pressure of 1 atmosphere?Free

Unlocked

Multiple Choice