A dime is 1.8 cm in diameter. At what distance from your eye would you have to hold a dime so that it has the same angular diameter as the full moon
a. 2 m
b. 2 cm
c. 2 km
d. 2 inches
e. 2 ft
A
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If you are measuring the mass of a small glass of milk, the most appropriate SI unit is the
A) megagram. B) kilogram. C) gram. D) milligram. E) microgram.
How much power is theoretically available from a mass flow of 1000 kg/s of water when it falls a vertical distance of 100 meters?
a. 980 kW b. 98 kW c. 4900 W d. 980 W e. 9600 W
A 20-?F capacitor charged to 2.0 kV and a 40-?F capacitor charged to 3.0 kV are connected to each other, with the positive plate of each connected to the negative plate of the other. What is the final charge on the 20-?F capacitor after the two are so connected?
a. 53 mC b. 27 mC c. 40 mC d. 80 mC e. 39 mC