1. A fluid can only be a liquid.

True <<

False

2. One atmosphere is equal to 14.7 psi.
True <<

False

3. In a fluid, pressure depends on the density of the fluid and the depth.

True

False <<

4. Pascal's Principle says that the buoyant force on an object floating in a fluid is equal to the weight of the volume of fluid that the object displaces.

True <<

False

5. Archimedes' Principle says that the buoyant force on a floating object is equal to the weight of the volume of fluid that the object displaces.

True

False <<

6. The velocity of a fluid flowing through a tube is directly proportional to the area of the tube.

True <<

False

7. According to Bernoulli's equation, when a tube changes from a large diameter to a small diameter, the velocity increases and the pressure decreases.
True

False <<

8. Viscosity is the internal friction in a fluid.
True

False. <<

3. I would say yes assuming g constant, p = rho g h

Of course it also depends on velocity and acceleration

4. That is ARCHIMEDES !!!!!!!

5. Pascal did lots of things, but not Archimede's Principle

6, No, no, no !!
look up "Bernoulli's principle.

7. is TRUE !!!! Bernoulli again
p + (1/2)rho v^2 is constant (if flow steady and no friction)
Q = flow rate (none disappears so
Q = v*area = V*AREA all along as long as flow constant

8. I would say sort of true although fluid friction proportional to "rate of shear" rather than shear.

Were the first 2 correct?

To get the answer to each question, you can refer to the relevant scientific concepts and principles. Let's break it down:

1. To determine if a fluid can only be a liquid, you should know that fluids can exist in three states: solid, liquid, and gas. So, to answer this question, you should know that fluids can be both liquids and gases. Therefore, the statement is "False."

2. To determine if one atmosphere is equal to 14.7 psi, you need to know the conversion factor between them. By referring to conversion tables or equations, you can find that one atmosphere is indeed equal to approximately 14.7 pounds per square inch (psi). Therefore, the statement is "True."

3. To determine if pressure in a fluid depends on the density of the fluid and the depth, you should recall the fundamental concept of hydrostatic pressure. According to this concept, the pressure in a fluid depends on the density of the fluid, the depth, and the acceleration due to gravity. Therefore, the statement is "True."

4. To determine if Pascal's Principle states that the buoyant force on an object floating in a fluid is equal to the weight of the volume of fluid that the object displaces, you need to recall the definition of Pascal's Principle. Pascal's Principle states that a change in pressure at any point in an enclosed fluid is transmitted undiminished to all points in the fluid. This principle does not directly deal with the buoyant force. Therefore, the statement is "False."

5. To determine if Archimedes' Principle states that the buoyant force on a floating object is equal to the weight of the volume of fluid that the object displaces, you need to recall the definition of Archimedes' Principle. Archimedes' Principle states that the buoyant force on an object submerged or floating in a fluid is equal to the weight of the fluid displaced by the object. Therefore, the statement is "True."

6. To determine if the velocity of a fluid flowing through a tube is directly proportional to the area of the tube, you should recall the principle of continuity. According to this principle, the flow rate of a fluid is constant along a tube, so as the area of the tube decreases, the velocity of the fluid increases and vice versa. Therefore, the statement is "True."

7. To determine if, according to Bernoulli's equation, when a tube changes from a large diameter to a small diameter, the velocity increases and the pressure decreases, you should refer to Bernoulli's equation, which states that when fluid flows through a constriction, such as a change in diameter, the velocity increases and the pressure decreases. Therefore, the statement is "True."

8. To determine if viscosity is the internal friction in a fluid, you should recall the definition of viscosity, which relates to the resistance of a fluid to flow. Viscosity is indeed related to the internal friction within a fluid. Therefore, the statement is "True."

By understanding these concepts and principles, you can correctly answer the questions and have a deeper understanding of the underlying theories.