A scuba diver is 1.2 m beneath the surface of a still pond of water
At what angle relative to the normal at the surface must the diver shine a beam of light toward the surface in order for a person on a distant bank to be able to see it? The index of refraction for water is 1.33. A) 41°
B) 48°
C) 59°
D) 90°
E) 0°
B
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If you were standing on the Earth's equator, which of the following in the sky would pass through your zenith during the entire day (24 hours)?
a. The north celestial pole b. The south celestial pole c. The celestial equator d. The nadir
According to the philosophical ideas associated with quantum theory,
A) science describes the objective universe, uninfluenced by humans. B) microscopic particles form the fundamental reality. C) microscopic particles do not have precise positions or velocities. D) All of the above. E) None of the above.
A 1.8-kg block is projected up a rough 10° inclined plane. As the block slides up the incline, its acceleration is 3.8 m/s2 down the incline. What is the magnitude of the force of friction acting on the block?
a. 5.0 N b. 3.8 N c. 4.2 N d. 4.6 N e. 6.5 N
In music the 3rd harmonic is which overtone?
A) 4th B) 2nd C) 1st D) 3rd E) 5th