Which of the following is an example of a non-Newtonian fluid?

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Question: Which of the following is an example of a non-Newtonian fluid?

Options:

Correct Answer: Cornstarch in water

Solution:

Cornstarch in water (oobleck) is a non-Newtonian fluid that exhibits varying viscosity depending on the shear rate.

Which of the following is an example of a non-Newtonian fluid?

Which of the following is an example of a non-Newtonian fluid?

Step 1: Understand what a non-Newtonian fluid is. A non-Newtonian fluid is a fluid whose viscosity changes when a force is applied to it.
Step 2: Identify examples of fluids. Common examples include water, oil, and cornstarch mixed with water (oobleck).
Step 3: Recognize that cornstarch in water (oobleck) behaves differently under stress. When you apply pressure, it becomes thicker, and when you stop applying pressure, it becomes runny.
Step 4: Compare oobleck to Newtonian fluids. Newtonian fluids, like water, have a constant viscosity regardless of the force applied.
Step 5: Conclude that cornstarch in water (oobleck) is indeed a non-Newtonian fluid because its viscosity changes with the amount of force applied.

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