Hello everyone, I have a pre quiz on fluids in order to be prepared in my class next year.
1. A fluid is a substance that can flow, change shape, transmit pressure, and exhibit viscosity, density, and buoyancy.
True
False
2. In order to calculate the pressure exerted on the surface of a fluid, the mass of the fluid must be divided by the volume of the fluid.
True
False
3. How does increasing temperature affect the viscosity of a liquid?
increases it
decreases it
has no effect
4.The density of a liquid can be changed by
decreasing the temperature
increasing the viscosity
can’t be changed
5.Which of the following is the best definition of viscosity?
the tendency of a fluid to support a floating object
the ability of a fluid to transmitted a force
the thickness of a fluid, or its resistance to flow
6. According to Bernoulli’s principle, the pressure of a high-speed fluid is higher than the pressure of a low-speed fluid.
True
False
7. According to Archimedes, the density of all objects is equal to the buoyant force of the object.
True
False
8. The scientist Archimedes helped determine that buoyant objects sink because the buoyancy force is greater than the gravitational force.
True
False
9. Pneumatic and hydraulic power systems use the concept of Bernoulli’s principle to power a machine.
True
False
10. Pascal’s principle states that
pressure applied to a fluid is transmitted equally throughout the fluid
pressure under a wing is less than pressure over a wing which creates lift
an immersed object is buoyed up by a force equal to the weight of the water it displaces
I need answers ASAP. Please answer and I will return the favor
1. A fluid is a substance that can flow, change shape, transmit pressure, and exhibit viscosity, density, and buoyancy.
True
False
2. In order to calculate the pressure exerted on the surface of a fluid, the mass of the fluid must be divided by the volume of the fluid.
True
False
3. How does increasing temperature affect the viscosity of a liquid?
increases it
decreases it
has no effect
4.The density of a liquid can be changed by
decreasing the temperature
increasing the viscosity
can’t be changed
5.Which of the following is the best definition of viscosity?
the tendency of a fluid to support a floating object
the ability of a fluid to transmitted a force
the thickness of a fluid, or its resistance to flow
6. According to Bernoulli’s principle, the pressure of a high-speed fluid is higher than the pressure of a low-speed fluid.
True
False
7. According to Archimedes, the density of all objects is equal to the buoyant force of the object.
True
False
8. The scientist Archimedes helped determine that buoyant objects sink because the buoyancy force is greater than the gravitational force.
True
False
9. Pneumatic and hydraulic power systems use the concept of Bernoulli’s principle to power a machine.
True
False
10. Pascal’s principle states that
pressure applied to a fluid is transmitted equally throughout the fluid
pressure under a wing is less than pressure over a wing which creates lift
an immersed object is buoyed up by a force equal to the weight of the water it displaces
I need answers ASAP. Please answer and I will return the favor