Cepat rambat gelombang:

<img align="middle" alt="begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row v equals cell omega over k end cell row blank equals cell fraction numerator 10 pi over denominator 5 pi end fraction end cell row blank equals cell 2 space straight m divided by straight s end cell end table end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mtable columnspacing=¨0px¨ columnalign=¨right center left¨»«mtr»«mtd»«mi»v«/mi»«/mtd»«mtd»«mo»=«/mo»«/mtd»«mtd»«mfrac»«mi»§#969;«/mi»«mi»k«/mi»«/mfrac»«/mtd»«/mtr»«mtr»«mtd/»«mtd»«mo»=«/mo»«/mtd»«mtd»«mfrac»«mrow»«mn»10«/mn»«mi»§#960;«/mi»«/mrow»«mrow»«mn»5«/mn»«mi»§#960;«/mi»«/mrow»«/mfrac»«/mtd»«/mtr»«mtr»«mtd/»«mtd»«mo»=«/mo»«/mtd»«mtd»«mn»2«/mn»«mo»§#160;«/mo»«mi mathvariant=¨normal¨»m«/mi»«mo»/«/mo»«mi mathvariant=¨normal¨»s«/mi»«/mtd»«/mtr»«/mtable»«/mstyle»«/math»" height="87" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -46px;" width="67" />&nbsp;

Suatu gelombang stasioner ujung bebas mempunyai persamaan simpangan <img align="middle" alt="begin mathsize 14px style y equals 0 comma 5 cos open parentheses 5 straight pi x close parentheses sin open parentheses 10 straight pi t close parentheses end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mi»y«/mi»«mo»=«/mo»«mn»0«/mn»«mo»,«/mo»«mn»5«/mn»«mi»cos«/mi»«mfenced»«mrow»«mn»5«/mn»«mi mathvariant=¨normal¨»§#960;«/mi»«mi»x«/mi»«/mrow»«/mfenced»«mi»sin«/mi»«mfenced»«mrow»«mn»10«/mn»«mi mathvariant=¨normal¨»§#960;«/mi»«mi»t«/mi»«/mrow»«/mfenced»«/mrow»«/mstyle»«/math»" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -3px;" width="174" />&nbsp;dengan y dan x dalam meter dan t dalam sekon, tentukan cepat rambat gelombang!

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