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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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
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
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