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Author Question: James is listening to the same tone coming from two speakers, one 3.49 m away and the other 3.10 m ... (Read 73 times)

Kthamas

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on: Jul 27, 2018
James is listening to the same tone coming from two speakers, one 3.49 m away and the other 3.10 m distant. At his position the two tones destructively interfere.
 
  (a) What is the largest possible wavelength of the tone?
  (b) If the air temperature is 30.C, what is the lowest possible frequency?

Question 2

Consider a galvanometer with full scale sensitivity of 333. A and a coil resistance of 33. .
 
  (a) What shunt resistance is needed to make a 5.0 A ammeter?
  (b) What series resistance is needed to construct a 5.0 volt voltmeter?


choc0chan

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Reply #1 on: Jul 27, 2018
Answer to Question 1

(a) 0.78 m
(b) 0.45 kHz

Answer to Question 2

(a) 2.2 m
(b) 15. K


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