Which of these strongly relate to a saxophone and clarinet?
A) vibrating air
B) length of tube.
C) both of these
D) neither of these
Answer: C
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It takes light 1.3 seconds to travel from the moon to Earth and 8 minutes to travel from the sun to Earth. Which of the following statements is true?
a. The sun is 6.2 times further from Earth than the moon. b. The sun is 10 times further from Earth than the moon. c. The sun is 0.16 times further Earth than the moon d. The sun is 0.10 times further from Earth that the moon. e. The sun is 370 times further from Earth than the moon.
A beam of light P has twice the wavelength but the same intensity as beam Q. The number of photons that hit a given area in a given time when it is illuminated by beam P is (A) twice, (B) the same, or (C) one-half of the number that hit when the area is illuminated by beam Q?
A. Twice B. The Same C. One-half of the number that hit
Assuming you are sitting still as you take this quiz, how would you draw your own worldline on a spacetime diagram?
A) a straight, vertical line B) You would not have a worldline because you are not moving. C) a straight, horizontal line D) a diagonal line
A resistance of 55 ?, a capacitor of capacitive reactance 30 ?, and an inductor of inductive reactance 30 ? are connected in series to a 110-V rms 60-Hz power source. What rms current flows in this circuit?
A) 4.0 A B) less than 2.0 A C) more than 2.0 A but less than 4.0 A D) more than 4.0 A E) 2.0 A