Review

An object will float in a fluid when:

• The object's density is greater than the fluid's density

• The object's density is equal to the fluid's density

• The object's density is less than the fluid's density

• The object's volume is greater than the fluid's volume

The buoyant force on a submerged object is equal to:

• The weight of the object

• The weight of the fluid displaced by the object

• 1. The difference in pressure between the top and bottom surfaces of the object

• 1. The volume of the fluid displaced by the object

An ideal fluid is characterized by:

• • Incompressibility and constant flow rate

• • Incompressibility and no viscosity

• • Compressibility and constant flow rate

• • Compressibility and no viscosity

The principle of conservation of energy applied to fluid flow is described by:

• Pascal's law

• Archimedes' principle

• Bernoulli's equation

• The continuity equation

According to Bernoulli's equation, if the velocity of a fluid increases, its pressure will:

• Increase

• Decrease

• Remain constant

• Cannot be determined from the given information

Pascal's law states that:

• Pressure at a point in a fluid is the same in all directions

• The pressure in a fluid increases with depth

• A change in pressure is transmitted undiminished to all points within a fluid

• The buoyant force on an object submerged in a fluid is equal to the weight of the fluid displaced

When a fluid flows through a pipe with varying diameter, which of the following remains constant?

• Pressure

• Velocity

• Mass flow rate

• Cross-sectional area

What is the equivalent of 1 calorie in joules?

• 4.2 J

• 0.42 J

• 42 J

• 420 J

A Joule’s experiment consisted of a falling weight which spins a paddlewheel in an insulated barrel of 0.20 [kg] water. The mass is 100 [kg], and it falls 2.0 [m]. How much does the temperature of the water change?

A 0.200 kg sample of water at 25.0°C is mixed with 0.500 kg of water at 60.0°C. Calculate the final temperature of the mixture, assuming no heat is lost to the surroundings and neglecting the heat capacity of the container.