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3 cards from this section. Quick, good the night before a test.
Define drag in your own words.
Think about how a swimming fish experiences resistance in the water.
What is the drag coefficient (Cd)?
Consider how a sports car might have a lower Cd than a van.
What is the drag coefficient (Cd)?
Think about the role of shape in fluid dynamics.
True or False: A rough surface increases drag.
Consider how water flows around different textures.
A wind turbine blade has a length of 2 meters and a diameter of 0.3 meters. It operates in air that flows at a speed of 15 m/s. Calculate the drag force acting on the blade if the drag coefficient is known to be 1.5.
Ensure you account for the unit conversions if necessary.
You are tasked to design a car with a minimized drag coefficient. What factors would you consider in your design process, and why?
Think about how racing cars are designed and what features they have compared to regular cars.
6 more questions in this section. Enroll free to practise them all.
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