Using current spacecraft, how long would it take to reach the nearest stars?
A) hundreds of thousands of years
B) millions of years
C) only a few years
D) thousands of years
B
You might also like to view...
In a Young's double-slit experiment, how many maxima occur between the 5th-order maxima?
a. 8 b. 9 c. 10 d. 25 e. Three more than the number of minima.
If y = 0.02 sin (30x ? 400t) (SI units), the wavelength of the wave is
a. ?/15 m b. 15/? m c. 60? m d. 4.2 m e. 30 m
The sound from a single source can reach point O by two different paths. One path has a length 20.0 m and the second path has a length 21.0 m. The sound destructively interferes at point O
What is the minimum frequency of the source if the speed of sound is 340 m/s? A) 340 Hz B) 6800 Hz C) 520 Hz D) 680 Hz E) 170 Hz
A 200-N object floats with three-fourths of its volume beneath the surface of the water. What is the buoyant force on the object? The density of water is 1000 kg/m3
A) 50 N B) 150 N C) 200 N D) 267 N E) It cannot be determined because we do not know the volume of the object.