Bulk Modulus: A piece of iron sinks to the bottom of a lake where the pressure is 21 times what it is at the surface of the lake. Which statement best describes what happens to the volume of that piece of iron?
A. There has been no change in the volume of the iron.
B. Its volume decreases slightly.
C. Its volume increases slightly.
D. Its volume becomes 21 times greater than at the surface.
E. Its volume becomes 1/21 what it was at the surface.
Answer: B
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What is meant by the phrase "angular size"?
A. the distance around an object B. an object's diameter C. the angle between two circular objects D. how big an object looks, expressed as an angle
Earthquake waves are classified as P waves and S waves. Which of the following statements is true about these waves?
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A 75.0 kg ladder that is 3.00 m in length is placed against a wall at an angle theta. The center of gravity of the ladder is at a point 1.2 m from the base of the ladder. The coefficient of static friction at the base of the ladder is 0.400. There is no friction between the wall and the ladder. What is the minimum angle the ladder makes with the horizontal for the ladder not to slip and fall?
A. 35 degrees
B. 45 degrees
C. 53 degrees
D. 60 degrees
E. 65 degrees
State the Conservation of Momentum for a System of Objects
What will be an ideal response?