Question Number 41962 by Necxx last updated on 16/Aug/18 $${A}\:{student}\:{holding}\:{a}\:\mathrm{324}{Hz}\:{tuning} \\ $$$${fork}\:{approaches}\:{a}\:{wall}\:{at}\:{a}\:{speed} \\ $$$${of}\:\mathrm{6}{ms}^{−\mathrm{1}} .{The}\:{speed}\:{of}\:{sound}\:{in}\:{air} \\ $$$${is}\:\mathrm{336}{ms}^{−\mathrm{1}} .{What}\:{frequency}\:{will} \\ $$$${the}\:{student}\:{detect}\:{from}\:{waves} \\ $$$${omitted}\:{from}\:{the}\:{fork}\:{and}\:{waves} \\ $$$${coming}\:{from}\:{the}\:{wall}? \\…
Question Number 40499 by Necxx last updated on 23/Jul/18 $${A}\:{particle}\:{of}\:{mass}\:\mathrm{2}×\mathrm{10}^{−\mathrm{27}} {kg}\:{moves} \\ $$$${according}\:{to}\:{the}\:{following} \\ $$$${y}=\mathrm{5}{cos}\left(\frac{\pi{t}}{\mathrm{3}}+\frac{\pi}{\mathrm{4}}\right) \\ $$$${find}\:{the}\:{maximum}\:{kinetic}\:{energy} \\ $$ Answered by tanmay.chaudhury50@gmail.com last updated on…
Question Number 38924 by NECx last updated on 01/Jul/18 $${A}\:{wave}\:{has}\:{a}\:{wavelength}\:{of}\:\mathrm{1}.\mathrm{5}{m}, \\ $$$${calculate}\:{the}\:{phase}\:{angle}\:{between} \\ $$$${a}\:{point}\:\mathrm{0}.\mathrm{25}{m}\:{from}\:{the}\:{peak}\:{of}\:{the} \\ $$$${wave}\:{and}\:{another}\:{point}\:\mathrm{1}{m}\:{further} \\ $$$${along}\:{the}\:{same}\:{peak}. \\ $$ Answered by tanmay.chaudhury50@gmail.com last updated…
Question Number 38816 by NECx last updated on 30/Jun/18 $${Two}\:{waves}\:{are}\:{represented}\:{by} \\ $$$${y}_{\mathrm{1}} ={Asin}\omega{t}\:{and}\:{y}_{\mathrm{2}} ={Asin}\left(\omega{t}−\delta\right). \\ $$$${What}\:{is}\:{the}\:{resultant}\:{of}\:{the}\:{two} \\ $$$${waves}? \\ $$$$\left.{ii}\right){determine}\:{the}\:{amplitude}\:{of}\:{the} \\ $$$${resultant}\:{wave}\:{and}\:{under}\:{which} \\ $$$${condition}\:{will}\:{it}\:{be}\:{constructive}\:{or} \\…
Question Number 38822 by NECx last updated on 30/Jun/18 $${The}\:{incident}\:{wave}\:{set}\:{up}\:{on}\:{a}\:{string} \\ $$$${of}\:{length}\:{fixed}\:{at}\:{each}\:{end}\:{is}\:{given} \\ $$$${by}:\:\:\:{y}_{\mathrm{1}} ={Asin}\left({kx}−{wt}\right) \\ $$$$\left.{i}\right){what}\:{is}\:{the}\:{equation}\:{of}\:{motion} \\ $$$${of}\:{the}\:{reflected}\:{wave},{y}_{\mathrm{2}} . \\ $$$$\left.{ii}\right){obtain}\:{the}\:{resultant},{y}={y}_{\mathrm{1}} +{y}_{\mathrm{2}} \\ $$$${of}\:{the}\:{two}\:{waves}.…
Question Number 35882 by NECx last updated on 25/May/18 $${An}\:{open}\:{pipe}\:\mathrm{40}{cm}\:{long}\:{and}\:{a} \\ $$$${closed}\:{pipe}\:\mathrm{32}{cm}\:{long},{with}\:{the} \\ $$$${same}\:{diameter},{sound}\:{the}\:{same} \\ $$$${fundamental}\:{frequency}\:{in}\:{unison}. \\ $$$${Find}\:{the}\:{end}\:{correction}\:{of}\:{these} \\ $$$${pipes}. \\ $$ Commented by tanmay.chaudhury50@gmail.com…
Question Number 35881 by NECx last updated on 25/May/18 $${A}\:{train}\:{travelling}\:{at}\:\mathrm{30}{m}/{s}\:, \\ $$$${approaching}\:{a}\:{stationary}\:{observer} \\ $$$${emits}\:{a}\:{tone}\:{at}\:{a}\:{frequency}\:{of}\:\mathrm{480}{Hz}. \\ $$$${If}\:{the}\:{speed}\:{of}\:{sound}\:{is}\:\mathrm{330}{m}/{s}, \\ $$$${determine}\:{the}\:{frequency}\:{of}\:{the} \\ $$$${note}\:{the}\:{observer}\:{hears}. \\ $$ Commented by tanmay.chaudhury50@gmail.com…
Question Number 35880 by NECx last updated on 25/May/18 $${Determine}\:{the}\:{intensity}\:{level}\:{of} \\ $$$$\mathrm{12}\:{people}'{s}\:{speech},{if}\:{each}\:{person} \\ $$$${speaks}\:{with}\:{an}\:{intensity}\:{level}\:{of} \\ $$$$\mathrm{60}{dB} \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 35879 by NECx last updated on 25/May/18 $${Find}\:{the}\:{velocity}\:{of}\:{the}\:{source}\: \\ $$$${along}\:{the}\:{line}\:{joining}\:{the}\:{source} \\ $$$${to}\:{a}\:{stationary}\:{observer}\:{if},{as}\:{a} \\ $$$${result}\:{of}\:{the}\:{motion},{the}\:{frequency} \\ $$$${of}\:{the}\:{note}\:{heard}\:{is} \\ $$$$\left.{a}\right){increased}\:{in}\:{the}\:{ratio}\:\mathrm{18}:\mathrm{15} \\ $$$$\left.{b}\right){decreased}\:{in}\:{the}\:{ratio}\:\mathrm{15}:\mathrm{18} \\ $$ Answered…
Question Number 35878 by NECx last updated on 25/May/18 $${A}\:{sonometer}\:{wire}\:\mathrm{60}{cm}\:{long},{under} \\ $$$${a}\:{tension}\:{of}\:\mathrm{120}{N},{vibrates}\:{in} \\ $$$${unison}\:{with}\:{a}\:{turning}\:{fork}\:{of} \\ $$$${frequency}\:\mathrm{512}{Hz}.{The}\:{wire}\:{is}\:{then} \\ $$$${shortened}\:{by}\:\mathrm{2}{cm},{the}\:{tension} \\ $$$${remaining}\:{the}\:{same}.{If}\:{the}\:{fork} \\ $$$${and}\:{wire}\:{are}\:{sounded}\:{together},{how} \\ $$$${many}\:{beats}\:{per}\:{second}\:{are}\:{heard}? \\…