# 11 MCQ: Thermal effects, fluid flow, buoyant force, etc

A tanker ship is filled with 2.25 x 105 m3 of gasoline at a refinery in southern Texas when the temperature is 17.2° C. When the ship arrives in New York City, the temperature is 1.3° C. If the coefficient of volumetric expansion for gasoline is 9.50 x 10-4/C°, how much has the volume of the gasoline decreased when it is unloaded in New York?

1.50 x 10-2 m3

66.2 m3

1290 m3

3400 m3

1.05 x 104 m3

Three thermometers are placed in a closed insulated box and are allowed to reach thermal equilibrium. One is calibrated in Fahrenheit degrees, one in Celsius degrees, and one in Kelvins. The Celsius thermometer reads -40° C and the Kelvin thermometer reads 233 K. Which one of the following statements is necessarily true?

The Kelvin thermometer should read -233 K.

The Kelvin thermometer should read -313 K.

The Fahrenheit thermometer must read -40° F.

If the water were found within the box, it must be in the liquid state.

If the temperature of the contents is increased by 10° C, the reading on the Kelvin thermometer should increase by 273 K.

An ice cube, ρ = 917 kg/m3, is sliding down a frictionless incline as shown in the drawing. The sides of the cube each have a length of 0.75 m. What pressure does the cube exert on the incline?

1800 Pa

6500 Pa

3600 Pa

2700 Pa

5100 Pa

Which one of the following properties could not be used as a temperature sensitive property in the construction of a thermometer?

The change in mass of a solid

The change in volume of a liquid

The change in length of a metal rod

The change in electrical resistance of a wire

The change in pressure of a gas at constant volume

Two cubes, one silver and one iron, have the same mass and temperature. A quantity Q of heat is removed from each cube. Which one of the following properties causes the final temperatures of the cubes to be different?

Density

Latent heat vaporization

Specific heat capacity

Coefficient of volume expansion

Volume

A balloon is released from a tall building. The total mass of the balloon including the enclosed gas is 2.0 kg. its volume is 5.0 m3. The density of air is 1.3 kg/m3. What is the average density of the balloon?

0.2 kg/m3

0.4 kg/m3

0.8 kg/m3

1.0 kg/m3

1.2 kg/m3

The density of the liquid flowing through the horizontal pipe in the drawing above is 1500 kg/m3. The speed of the fluid at pint A is 5.5 m/s while at point B it is 8.0 m/s. What is the difference in pressure, PB - PA, between points B and A?

-1.9 x 103 Pa

+3.8 x 103 Pa

-2.5 x 104 Pa

+5.0 x 104 Pa

-7.6 x 105 Pa

A balloon inflated with helium gas (density = 0.2 kg/m3) has a volume of 6 x 10-3 m3. if the density of air is 1.3 kg/m3, what is the buoyant force exerted on the balloon?

0.01 N

0.08 N

0.8 N

1.3 N

7.8 N

A woman is enjoying a tropical drink while lying on a beach. The acceleration due to gravity at her location is 9.85 m/s2. What gauge pressure must exist in the woman's mouth if she is drinking through a straw extending 0.085 m above the surface of the drink? Note: Assume the drink has a density of 1015 kg/m3.

850 Pa

97 Pa

1100 Pa

100 Pa

1.0 2.0 x 105 Pa

The density of mercury is 1.36 x 104 kg/m3. What is the mass of a 4.00 10-4 -m3 sample of mercury?

0.0343 kg

0.002 94 kg

2.94 kg

5.44 kg

6.29 kg

Zirconium tungstate is an unusual material because its volume shrinks with an increase in temperature for the temperature range 0.3 K to 1050 K (where it decomposes). In fact, the volumetric coefficient of thermal expansion is -26.4 x 10-6/K. Determine the ratio Δ V/V0 for the above mentioned temperature range. Express your answer in percent.

-5.28 %

-3.59 %

-2.77 %

-1.90 %

-1.04 %

https://brainmass.com/physics/thermal-equilibrium/196930

#### Solution Summary

11 Multiple choice questions based on thermal expansions, fluid flow, buoyant force and similar concepts are explained and solved.