A rocket is launched from the origin with an acceleration of 20.0 
at an angle of 30.0 degrees above the horizontal. The launch acceleration lasts for 2.00 seconds at which time the fuel is exhausted. The rocket then falls with an acceleration of 9.80 
downward. What is the X distance (range) when the rocket hits the ground?
A. 153 m
B. 166 m
C. 187 m
D. 205 m
E. 230 m
D. 205 m
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Olbers' paradox is an apparently simple question, but its resolution suggests that the universe is finite in age. What is the question?
A) What would it be like to ride on a beam of light? B) How many stars are in the universe? C) Can we measure the position and momentum of an electron at the same time? D) Why is the sky dark at night?
An object 10.0 cm in height is placed 37.0 cm in front of a concave mirror of focal length 18.5 cm. What is the height of the image?
A) -2.5 cm B) -5.0 cm C) -7.5 cm D) -20.0 cm E) -10.0 cm
Geologists have principally used which class of rocks for radiometric dating?
a. Sedimentary b. Igneous c. Foliated d. Metamorphic
The figure below shows a planet traveling in a counterclockwise direction on an elliptical path around a star located at one focus of the ellipse. When the planet is at point A,
A. its speed is constant. B. its speed is increasing. C. its speed is decreasing. D. its speed is a maximum. E. its speed is a minimum.