Choose the lens having the shortest focal length
a.
b.
a
Physics & Space Science
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Compared with the spectral lines in the solar spectrum, lines in a supergiant spectrum are
a. sharper. b. broader. c. weaker. d. stronger. e. broader and weaker.
Physics & Space Science
A 120 N traffic light is located at the midpoint of a cable between two poles. The cable makes and angle of 30
to the horizontal at each pole. What is the tension in the cable?
A. 60.0 N B. 90.0 N C. 140 N D. 110 N E. 120 N
Physics & Space Science
Can we see the "intruder galaxy" in the image?
A: Yes. B: No.
Physics & Space Science
A batter hits a home run in which the ball travels 110 m horizontally with no appreciable effects of air. If the ball left the bat at 50° above the horizontal just above ground level, how fast was it hit?
What will be an ideal response?
Physics & Space Science