A star with an apparent magnitude of +2.3 and an absolute magnitude of +5.9 lies ________ than 10 parsecs away

Fill in the blank(s) with correct word


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Physics & Space Science

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Suppose we make a scale model of our solar system, with the Sun the size of a grapefruit. Which of the following best describes what the planets would look like?

A) The planets are all much smaller than the Sun. Four planets are within about 20 meters of the Sun, while the rest planets are spread much farther apart. B) The planets are all much smaller than the Sun and are spread out evenly over a distance about the length of a large classroom. C) The planets are all much smaller than the Sun. Four planets are located within a few centimeters of the Sun, and four planets are located at distances ranging up to about a meter. D) The planets range in size from about the size of a marble to the size of a baseball. They are spread out over a region about the size of a football field.

Physics & Space Science

Any object moving relative to Earth will have a Doppler shift when viewed from Earth

Indicate whether the statement is true or false

Physics & Space Science

For general projectile motion if we neglect air, the vertical component of a projectile's acceleration

A) is always zero. B) remains a non-zero constant. C) continuously increases. D) continuously decreases. E) first decreases and then increases.

Physics & Space Science

The diameter of the average nucleus is about ______________ m

Fill in the blank(s) with correct word

Physics & Space Science