A rod (length = 2.0 m) is uniformly charged and has a total charge of 5.0 nC. What is the electric potential (relative to zero at infinity) at a point which lies along the axis of the rod and is 3.0 m from the center of the rod?
a. 22 V
b. 19 V
c. 16 V
d. 25 V
e. 12 V
c
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The image below shows a rock formation nicknamed “the face on Mars” that was taken by the Viking 1 orbiter in 1976. Given the clear resemblance to a face, what is an appropriate scientific reaction to this image?
A) Assume it is most likely a coincidental result of light and shadow, and plan higher resolution follow-up observations.
B) Assume that the image is probably evidence of an advanced civilization, and develop plans to attempt radio communication wit the civilization.
C) Conclude that the resemblance to a human face is so clear that it cannot have been made by nature and that this geological feature must have been built by an advanced civilization.
D) Assume that NASA's spacecraft must have been hacked by someone perpetrating a hoax, and therefore ignore the image
In the inner solar system, the largest surface features are found on the largest planets
Indicate whether the statement is true or false
The closest planet to Earth is
a. Mars. b. Venus. c. Mercury. d. Saturn.
When Mars is located directly behind the Earth with respect to the Sun in its orbit, it is
a. at the midpoint in the sky between east and west at sunset. b. at the midpoint in the sky between east and west at midnight. c. at the midpoint in the sky between east and west at sunrise. d. at the midpoint in the sky between east and west at noon. e. not visible in the night sky.