Practice Mass Conservation Equations (4.3.2)

Practise this section

8 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
Define mass conservation in your own words.
Show hintHide hint
Think about how fluids behave in a closed container.
Question 2.
What does incompressible flow mean?
Show hintHide hint
Consider how liquids act under pressure.
3Question 3.
What is the principle of mass conservation?
- Mass can be created
- Mass can be destroyed
- Mass remains constant in an isolated system
Show hintHide hint
Focus on the concept of mass in closed systems.
4Question 4.
Is incompressible flow characterized by variable density?
- True
- False
Show hintHide hint
Think about the definition of incompressibility.
Question 5.
A cylindrical tank receives water at a rate of 1 L/s and drains at 0.8 L/s. Calculate the rate at which the water level in the tank rises.
Show hintHide hint
Think about how volume changes with area and time.
Question 6.
A water jet strikes a plate perpendicularly with a mass flow rate of 3 kg/s and velocity of 10 m/s. Find the force exerted on the plate.
Show hintHide hint
Use the momentum principle for fluids.

4 more questions in this section. Enroll free to practise them all.