Unformatted text preview: LECTURE A
Quiz 2 DL #—-— Name (135‘) (ﬁrSt)—_—ﬁrlﬁl'etlml13‘nm Rubric Codes: Student ID:
I certif by mySI inature that I will abide by the code
of am emlc eon uet of the University of California Signature ANSWERS WITHOUT WORK WILL RECEIVE NO CREDIT. MARK YOUR ANSWERS CLEARLY. You set up two speakers directly in front of you, with Speaker B 17cm in front of Speaker A, as shown below, and speaker B 119cm in front of you. At this separation distance, the sound you hear is veg loud, and if you move
either speaker fowvard or backward the sound gets softer. The speakers are connected to the same source. / >l <———-—~——119cm———>| | <—17cm Speaker A Speaker B Point on the axis at which you are located Problem 1: a). Create a possible phase chart that illustrates this situation. You will be graded on the clarity of your
assumptions and the completeness of their corres‘ggngi ng explanations. Assumptions not stated explicitly will earn nocredit. :‘IONQ ‘3 WW“ 1‘32.“ w
_’ Aq) a? ”b Will/Lot, A yOSihvg o zu ,_ T,--LI‘lT)-(oﬁ,e’r0. _ m mm? W 8W w .
hssmpklons “:3ng ‘5 at .96 gov/0&5; wage b). Based on your assumptions in 1(a), determine a possible wavelength of the sound. —L\'7r “10343 fit—t Motion wave/62
l1c:m_r :9 ,\2 \‘-lom *DU‘ﬁ-‘tm‘ﬁﬁw‘ﬁj’t ) “3W5 A's >\= 35c?) Ax y(x, t) Asin Asin Ad) — 21m 271A C) + (p v— - )lf— — v = XI (Please see other side for Problem 2) ...
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- Spring '08