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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define mass conservation in your own words.
💡 Hint: Consider what happens to mass in closed versus open systems.
Question 2
Easy
What is incompressible flow?
💡 Hint: Think about how water behaves under normal conditions.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does the mass conservation principle state?
- Mass can be created
- Mass remains constant in a closed system
- Mass leaves the system
💡 Hint: Consider your understanding of closed versus open systems.
Question 2
Is incompressible flow characterized by constant density?
- True
- False
💡 Hint: Relate it to how water behaves under pressure.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a flat plate is moving at 10 m/s into a water jet with a velocity of 25 m/s, if the water density is 1000 kg/m^3 and the jet area is 0.05 m^2, calculate the net force exerted on the plate considering the jet splits equally.
💡 Hint: Use momentum equations involving relative velocities.
Question 2
A spacecraft with a mass of 10000 kg is dropping towards Earth at a speed of 600 m/s. If it expels gas with a rate of 50 kg/s at a speed of 2000 m/s, calculate the thrust produced and how much force counteracts gravity (approximation 98000 N).
💡 Hint: Incorporate mass flow rate with exhaust velocity in your calculations.
Challenge and get performance evaluation