Period 2 Question 1.

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Presentation transcript:

Period 2 Question 1

Consider two steel rods, A and B Consider two steel rods, A and B. B has three times the area and twice the length of A, so Young’s modulus for B will be what factor times Young’s modulus for A? 1. 3.0 2. 0.5 3. 1.5 4. 1.0 5. 6.0

Period 2 Question 2

In a tank of liquid, the hydrostatic pressure at a given depth is a function of (select the best answer): 1. depth. 2. volume 3. surface area. 4. liquid density. 5. Choices 1. and 4. are both valid.

Period 3 Question 1

A tire stops a car by use of friction A tire stops a car by use of friction. What modulus should we use to calculate the stress and strain on the tire due to friction? a. Young’s modulus b. compression modulus c. shear modulus d. bulk modulus e. none of the above

Period 3 Question 2

The pressure exerted on the ground by a woman is largest when she stands with both feet flat on the ground she stands flat on one foot she stands on the pointed heel of one shoe she sits on her butt all of these give the same pressure 60