The three principal types of mountain building are volcanic, fault-block, and ______________
Fill in the blank(s) with correct word
fold
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A lens that is thinner at the center than the edges
a. is a converging lens b. is a diverging lens c. always forms a real image d. always forms a virtual image e. none of the above
Kinetic Energy: An object hits a wall and bounces back with half of its original speed. What is the ratio of the final kinetic energy to the initial kinetic energy of the object?
A. 1/2 B. 1/4 C. 1/8 D. 1/16
Which of the following must be true for differentiation to occur in a planet?
A) The planet must have a rocky surface. B) The planet must be made of both metal and rock. C) The planet must have an atmosphere. D) The planet must be geologically active, that is, have volcanoes, planetquakes, and erosion from weather. E) The planet must have a molten interior.
Identical balls oscillate with the same period T on Earth. Ball A is attached to an ideal spring and ball B swings back and forth to form a simple pendulum. These systems are now taken to the Moon, where g = 1.6 m/s2, and set into oscillation
Which of the following statements about these systems are true? (There could be more than one correct choice.) A) Both systems will have the same period on the Moon as on Earth. B) On the Moon, ball A will take longer to complete one cycle than ball B. C) On the Moon, ball B will take longer to complete one cycle than ball A. D) On the Moon, ball A will execute more vibrations each minute than ball B. E) On the Moon, ball B will execute more vibrations each minute than ball A.