While driving down the highway a lovebug spatters onto your windshield. Which experiences the greater force of impact?
A) the lovebug
B) your car
C) both the same but with different consequences
Answer: C
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Lenz's Law: As shown in the figure, a C-shaped conductor is in a uniform magnetic field B out of the page, and this field is increasing. What is the polarity of the induced emf in terminals X and Y?
A. X and Y are at the same potential. B. X is positive and Y is negative. C. Y is positive and X is negative.
Where do most of the elements heavier than iron form?
A. in the interstellar clouds B. in the interior of high-mass stars C. in supernova explosions D. in the interior of stars
What is the symbol for the nuclide with 46 protons and 92 neutrons?
A. 92 46Pd B. 138 92U C. 138 46Pd D. 46 92U
A rock is thrown from the edge of the top of a 100-ft tall building at some unknown angle above the horizontal. The rock strikes the ground a horizontal distance of 160 ft from the base of the building 5.0 s after being thrown. Assume that the ground is level and that the side of the building is vertical. Determine the speed with which the rock was thrown
a. 72 ft/s b. 77 ft/s c. 68 ft/s d. 82 ft/s e. 87 ft/s