A car travels on a road that, if viewed from the side, has a semicircular bump. When at the top of the bump, the occupants of the car feel as though they weigh half their normal weight. What is the speed of the car if the radius of the semicircle is 120 m?
A. 107 m/s
B. 53.7 m/s
C. 34.3 m/s
D. 24.3 m/s
D. 24.3 m/s
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a. prism b. mirror c. lens d. diffraction grating e. photographic plate
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Fill in the blank(s) with correct word
Since 1 kilowatt equals 1000 watts, and 1 hour equals 3600 seconds, it follows that the kilowatt-hour is
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A common inactive ingredient in products such as sunscreen lotions and shampoo is triethyl amine, also known as TEA. Which of the following is the chemical structure for this compound?
A) a B) b C) c D) d