The Sun is
a. a star which generates its own energy.
b. 1 AU from Earth.
c. visible by its own light emission.
d. All of the other choices are correct.
d
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The most southern latitude from which an observer on Earth can see the North Star (Polaris) is
a. 66.5°S. b. 23.5°S. c. 0°. d. 23.5°N.
The distance to an imaginary star is 2 pc when measured via parallax. What will this distance be when represented using Astronomical Units?
A) 4.12 x 105 AU B) 6.79 x 104 AU C) 2.34 x 102 AU D) 9.11 x 107 AU
The names of the seven days of the week are based on the
A) seven naked-eye objects that appear to move among the constellations. B) seven planets closest to the Sun. C) seven brightest stars in the prominent constellation Orion. D) most popular Norse gods. E) seven largest constellations of the ancient world.
Projectile Motion: A ball is thrown at an original speed of 8.0 m/s at an angle of 35° above the horizontal. If there is no air resistance, what is the speed of the ball when it returns to the same horizontal level?
A. 4.0 m/s B. 8.0 m/s C. 16 m/s D. 9.8 m/s