A mega-parsec (Mpc) is equivalent to
a. 3.26 light-years.
b. 206,265 light years.
c. 1,000,000 light years
d. 3,260,000 light-years.
e. the diameter of the Milky Way galaxy.
d
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Ball A is dropped from the top of a building. One second later, ball B is dropped from the same building. Neglect air resistance. As time progresses, the difference in their speeds
A) increases. B) remains constant. C) decreases. D) cannot be determined from the information given.
The recent modification of the standard Big Bang model is called the ______________ model
Fill in the blank(s) with correct word
This image shows two tall volcanoes on Venus. Why is it yellow?
A) The yellow color is arbitrary because this image was created with radar data rather than visible light. B) Lava from volcanoes on Venus is yellow rather than the red of lava on Earth. C) The camera used to take this photograph had a yellow filter on it. D) Venus is yellow all over, apparently as a result of some sort of sulfurous dust that coats its surface.
A runner runs around a track consisting of two parallel lines 96 m long connected at the ends by two semicircles with a radius of 49 m. She completes one lap in 100 seconds. What is her average velocity?
A) 2.5 m/s B) 5.0 m/s C) 10 m/s D) 0 m/s E) 1.3 m/s