How do asteroids appear in long exposure images?
A) as complex curving and looping lines B) as points of light, like the stars
C) as resolved disks, like the planets D) as straight lines across a background of stars
D
You might also like to view...
A 1800 kg car moving at 20 m/s hits an initially uncompressed spring with a spring constant of 
The maximum compression of the spring is
A. 0.40 m. B. 0.60 m. C. 0.80 m. D. 1.0 m. E. 1.2 m.
What is one piece of scientific evidence for human contributions to global climate change?
A) There is no compelling evidence for human contributions to climate change; the correlations do not show what causes them. B) Humans deplete the ozone layer, allowing more ultraviolet radiation to reach the Earth. C) Humans burn forests, drive cars, and build power plants that directly heat the planet. D) Climate models show that extra carbon dioxide contributed by humans is enough to match the temperature data. E) Humans are responsible for every possible change to the planet, since humans are the only intelligent life forms.
The magnetic field of an electromagnetic wave has a peak value of 5.0 × 10-10 T. What is the intensity of the wave?
A) 1.0 × 10-13 W/m2 B) 1.5 × 10-5 W/m2 C) 3.0 × 10-5 W/m2 D) 2.0 × 10-13 W/m2 E) 7.5 × 105 W/m2
Identical 8.0-mC point charges are positioned on the x axis at x = ±1.0 m and released from rest simultaneously. What is the kinetic energy of either of the charges after it has moved 2.0 m?
a. 84 mJ b. 54 mJ c. 96 mJ d. 63 mJ e. 48 mJ