physics is fun

8/19/2019 Physics is fun

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MAPUA INSTITUTE OF TECHNOLOGY Department of Physics

E303: KUNDT’S TUBE: VELO!T" O#SOUND !N SOL!D

FLORES, Arvin Christian S.$0%$%00%&$ 'E($ )ro*p +

P,"%$L(-.

Engr. Ericson . i!a"nahan

Instr"ctorF#$r"ar% &', ()&*

ANALYSIS

SCORE:

Analysis /30

Conclusion /20Presentation /10

TOTAL



Lon/it*ina1 2aes that trae1 into somethin/ 1i4e an e1astic mei*m5 they are ca11e

so*ns 2aes6 !t is 1i4e2ise characteri7e as the e8amp1e of *nsett1in/ in9*ence ro*/ht

ao*t y the ee1opment of ita1ity /oin/ thro*/h a mei*m5 for e8amp1e5 air5 2ater5 or

2hateer other 9*i or stron/ matter as it spreas far from the so*rce of the so*n6

Lon/it*ina1 2aes are compressiona1 2aes 2hich /o thro*/h the air thro*/h a

pro/ression of rarefactions compressions6 !n irectin/ this e8periment5 o*r /atherin/ has

e8perience a fe2 iss*es an tro*1es after oin/ the e8periment6 One of the tro*1es

o*r /atherin/ has e8perience is the person 2ho is r*in/ the ro isn;t 1e/itimate1y

stro4in/ the po1e6 -nother tro*1esome1y that o*r /atherin/ has e8perience is the

etermination of the 1en/th of the *st6 <hat 2e i in this tria1 2as 2e create

1on/it*ina1 2aes thro*/h r*in/ the ro 2ith the *ti1i7ation of a c1oth 2ith rosin6 <e

e8perience iss*es in e1ierin/ the 2aes in 1i/ht of the fact that on the o= chance that

2e simp1y r* the po1e e1icate1y the 2ae1en/th of the 2aes frame is to short an in

the eent that 2e attempt to r* it tr*1y har the /1ass t*e sha4es no2 an a/ain

e8asperatin/ 1ycopoi*m po2er an the 2aes shape6 Thro*/h practice 2e co*1

minimi7e mista4es6 The temperat*re of the room is aitiona11y h*/e since it in9*ences

the spee of so*n in air5 2herein as the temperat*re rises the spee of so*n in air

increments6

Determining the Va : = 332 + 0.6 ( ) = 332+ 0.6 (26) = 347.6 /

Determining the Vr : (Eq. 3)

= ( / ) () = ( 0.916 / 0.0871 ) (348.8) = 3655.59 /s

Determining the Vr : (Eq. 4)

Vr=√ y

p = Vr=√

9.1 x1010

8400

=3291.40 m/



CONCLUSION

O*r estinations in this e8amination 2ere accomp1ish y o*r /ro*p 2hich

2ere5 to ecie the e1ocity of the so*n in a meta1 ro an5 to ecie the spee of

so*n in the t*e app1yin/ the stanars of resonance6 The hypothesis is that the so*n

in so1i can e contro11e y app1yin/ the r*1e of resonance6 !n this tria15 2hen the meta

ro 2as irate5 it create 1on/it*ina1 2aes 1i4e reereratin/ air se/ment in a t*e

open at oth >nishes6 By *ti1i7in/ the resonance;s princip1e5 2e co*1 re/ister the spee

of so*n in a meta1 ro y comparin/ the fre?*encies of the meta1 ro an air6 The

>/*re spee of so*n in meta1 ar 2as 3&@A60& ms5 2hich is /enera11y near the

estimation of the [email protected]%& ms from the e?*ation &6 <e accomp1ish tryin/ so as to

eerythin/ on the tar/ets a fe2 eneaors on the ro an assem1e n*mero*s

information as 2e can 2ith the /ien time /ien to *s6 By the stro4e connecte to the

ro5 it pro*ces friction an aitiona11y 1on/it*ina1 2aes on the t*e from the ro1e at

e?*ia1ent rec*rrence that o*tcome 2ith hain/ a hi/h pitch so*n6 The spee of so*n

2as 4no2n on acco*nt of the noticea1e 2ae esi/n mae of 1ycopoi*m po2er6

physics is fun

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