An observer in the Southern Hemisphere takes a time exposure photograph of the night sky. If the illustration below depicts the photograph taken by the observer, which direction was the camera pointing
a.
straight north
b.
straight east
c.
straight south
d.
straight west
e.
straight up, directly overhead
D
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Olympus Mons is the tallest (volcanic) mountain in the entire solar system. Explain how Mars can have mountains taller than the ones on Earth
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Projectile Motion: A projectile leaves the ground at 150 m/s and reaches a maximum height of 0.57 km. If there was no air resistance, at what angle above the horizontal did it leave the ground?
Fill in the blank(s) with the appropriate word(s).
A proton with a kinetic energy of 0.20 keV follows a circular path in a region where the magnetic field is uniform and has a magnitude of 60 mT. What is the radius of this path?
A. 4.1 cm B. 2.9 cm C. 3.4 cm D. 5.1 cm E. 2.4 cm
When we breathe we inhale oxygen, Image, and exhale carbon dioxide, Image, plus water vapor, ImageO. Which likely has more mass, the air that we inhale or the same volume of air we exhale? Does breathing cause you to lose or gain weight?
A) The air we inhale has more mass; Breathing causes you to lose weight. B) The air we exhale has more mass; Breathing causes you to lose weight. C) The air we inhale has more mass; Breathing causes you to gain weight. D) The air we exhale has more mass; Breathing causes you to gain weight.