Of the two colors shown in the image above, the pink colored nebula is the least common
a. True
b. False
B
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A rock is thrown at a window that is located 18.0 m above the ground. The rock is thrown at an angle of 40.0° above horizontal
The rock is thrown from a height of 2.00 m above the ground with a speed of 30.0 m/s and experiences no appreciable air resistance. If the rock strikes the window on its upward trajectory, from what horizontal distance from the window was it released? A) 53.2 m B) 48.7 m C) 71.6 m D) 29.8 m E) 27.3 m
Different colors of light correspond to different light
A) velocities. B) intensities. C) polarities. D) frequencies. E) none of the above
Why are dark dust clouds largely misnamed?
A) It is ice, not dust, which make them look dark. B) Dust clouds do radiate energy, but not as much light as the stars do. C) The cloud is an illusion, for the dust is evenly distributed around the Galaxy. D) They contain much more gas than dust. E) All of the above are correct.
At what rate is thermal energy being generated in the 2R-resistor when ? = 12 V and R = 3.0 ??
a.
12 W
b.
24 W
c.
6.0 W
d.
3.0 W
e.
1.5 W