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Author Question: Two in-phase loudspeakers that emit sound with the same frequency are placed along a wall and are ... (Read 58 times)

Alainaaa8

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on: Jul 29, 2018
Two in-phase loudspeakers that emit sound with the same frequency are placed along a wall and are separated by a distance of 5.00 m.
 
  A person is standing 12.0 m away from the wall, equidistant from the loudspeakers. When the person moves 1.00 m parallel to the wall, she experiences destructive interference for the first time. What is the frequency of the sound? The speed of sound in air is 343 m/s.
  A) 211 Hz B) 422 Hz C) 674 Hz D) 512 Hz E) 256 Hz

Question 2

A slender uniform rod 100.00 cm long is used as a meter stick. Two parallel axes that are perpendicular to the rod are considered. The first axis passes through the 50-cm mark and the second axis passes through the 30-cm mark.
 
  What is the ratio of the moment of inertia through the second axis to the moment of inertia through the first axis? A) I2/I1 = 1.5
  B) I2/I1 = 1.7
  C) I2/I1 = 1.9
  D) I2/I1 = 2.1
  E) I2/I1 = 2.3
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katheyjon

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Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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Alainaaa8

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Reply 2 on: Jul 29, 2018
:D TYSM

epscape

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Reply 3 on: Yesterday
Wow, this really help

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