If a guitar string has a fundamental frequency of 500 Hz, which one of the following frequencies can set the string into resonant vibration?
A) 1750 Hz B) 750 Hz C) 1500 Hz D) 250 Hz
Question 2
Suppose you are inside a smooth-flying no bumps jet plane moving at constant speed in a straight line across the Atlantic Ocean. Can you detect this motion i.e.
, can you tell that you are moving without directly or indirectly making use of anything outside of your own reference frame? If so, how could you detect this; and if not, why not?
A) Yes. For example, if you dropped a coin you would find that it lands to the rear of the drop point.
B) Yes. For example, if you dropped a coin you would find that it lands to the front of the drop point.
C) No, because of the principle of relativity.
D) No, because of the principle of the constancy of lightspeed.
E) No, because jet planes move far too slowly for such an effect to actually be observed.
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