The radio waves emitted from Sagittarius A* region take how long to travel to Earth?
A. 220 million years
B. 50,000 years
C. 100,000 years
D. 8.5 years
Answer: B
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A surprise from the Pioneer Venus photos was that:
A) the craters on Venus are all large. B) the clouds rotate around the planet in only four days, very unlike the slow surface rotation. C) the clouds of Venus are mainly water vapor, like our own. D) the highest volcano, Maxwell Mons, protrudes above the cloud deck. E) no impact craters at all are found on the Venusian surface.
The southern highlands of Mars date to which geological era?
A) Amazonian B) Hesperian C) Cenozoic D) Noachian
Three identical resistors are connected in series to a 12-V battery. What is the voltage across any one of the resistors?
A) 12 V B) 3 V C) 36 V D) 0 V E) 4 V
When an electron moves in a direction opposite to the electric field, its potential increases but the potential energy decreases
Indicate whether the statement is true or false