Suppose you see a photo showing Jupiter half in sunlight and half in shadow (that is, a first quarter Jupiter). This photo might have been taken by
A) the Galileo spacecraft that orbited Jupiter in the 1990s.
B) the Hubble Space Telescope (which orbits Earth).
C) the Keck Telescope on Mauna Kea, Hawaii.
D) the Arecibo Radio Telescope in Puerto Rico.
A
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If the rate at which a pulsar is slowing down is found, this helps us find the time at which it was produced by the supernova
Indicate whether the statement is true or false
A particle moving along the x axis has a position given by x = 54t? 2.0t3 m. At the time t = 3.0 s, the speed of the particle is zero. Which statement is correct?
A. The particle remains at rest after t = 3.0 s. B. The particle no longer accelerates after t = 3.0 s. C. The particle can be found at positions x< 0 m only when t< 0 s. D. All of the above are correct. E. None of the above is correct.
Two pairs of sunspots appear similar, but if one was observed in 1990, and the next in 2002, we would note what difference?
What will be an ideal response?
An oil film floats on a water surface. The indices of refraction for water and oil, respectively, are 1.333 and 1.466 . If a ray of light is incident on the air-to-oil surface at an angle of 41.9° with the normal, what is the incident angle at the oil-to-water surface?
a. 30.1° b. 27.1° c. 37.4° d. 41.9° e. 33.5°