Imibuzo Yesibonelo Somphumela We-Doppler

Izibonelo eziyi-14 zemibuzo ye-Doppler Effect

1. Kusukela kulesi sitatimende esilandelayo:
(1) U-P usondela ku-S onganyakazi
(2) U-S usondela ku-P ongaguquki
(3) U-P no-S bayasondelana
(4) U-S no-P bahamba ngesivinini esifanayo
Uma u-P (umlaleli) ezwa umsindo ngemvamisa ephakeme kunemvamisa ekhishwa yi-S (umthombo), khona-ke isitatimende esifanele...
A. (1), (2) kanye no-(3) kuphela
B. (1), (2), (3) kanye no (4)
C. (1) kanye no-(3) kuphela
D. (1) kanye no-(4) kuphela
E. (2) kanye no-(4) kuphela
Ingxoxo

Ukuze sifakazele lokhu ngokwezibalo, siqala ngokwenza izibalo njengoba kuxoxwe ngazo ngezansi. Idatha elandelayo iyisiphetho.
Isivinini somlaleli (v)_p) = 60 m/s, uma umlaleli ethule khona-ke vp = 0
Isivinini somthombo womsindo (v)_s) = 40 m/s, uma umthombo womsindo ungashintshi khona-ke uma kuqhathaniswa no- = 0
Isivinini somsindo (v) = 340 m/s
Imvamisa yomsindo (f) = 1000 Hertz

U-P usondela ku-S omile
vp inhle uma umlaleli esondela emthonjeni womsindo
Umthombo womsindo uthule ukuze v_s = 0

U-S usondela ku-P ohlala ungashintshi
uma umsindo uqhathaniswa nowesibili uma umthombo womsindo usondela kumlaleli
Umlaleli wayethule ukuze v_p = 0

U-P no-S bayasondelana
vp inhle uma umlaleli esondela emthonjeni womsindo
uma umsindo uqhathaniswa nowesibili uma umthombo womsindo usondela kumlaleli

I-S ne-P zihamba ngesivinini esifanayo
Uma umthombo womsindo kanye nomlaleli kuhamba ngesivinini esifanayo, umphumela we-Doppler awuveli.
Impendulo efanele ngu-A.

2. Umlaleli umi eduze komthombo womsindo onemvamisa engu-684 Hz. Omunye umthombo womsindo onemvamisa engu-676 Hz uya ngqo kumlaleli ngesivinini esingu-2 m/s.^-1Uma ijubane lokusabalala komsindo emoyeni lingu-340 ms^-1, khona-ke imvamisa yekhayithi ezwiwa ngumlaleli...
I-A. 2 Hz
B. 3 Hz
C. 4 Hz
D. 5 Hz
I-E. 6 Hz
Ingxoxo
Kuyaziwa ukuthi:
Imvamisa yomthombo womsindo 1 (f)₁) = 684 Hz (kuthule)
Frekuensi umthombo womsindo 2 (f₂) = 676 Hz (ukuhamba)
Isivinini somthombo womsindo 2 (v)₂) = 2 m/s (ukuya kumlaleli)
Isivinini somsindo emoyeni (v) = 340 m/s
Kubuziwe: Ukuvama kwekhayithi okuzwiwa ngumlaleli
Impendulo:
Okokuqala bala imvamisa yomsindo ozwakalayo ovela emthonjeni womsindo usondela eduze komlaleli.

Imvamisa ye-kite = umehluko phakathi kwemvamisa emibili yomsindo ezwiwa ngumlaleli = imvamisa yomthombo womsindo ongashintshi – imvamisa yomthombo womsindo ohambayo = 684 Hz – 680 Hz = 4 Hz.

Impendulo efanele ngu-C.

3. Umthombo womsindo uhamba ngesivinini esingu-20 ms^-1 isondela kumuntu omile. Imvamisa yomthombo womsindo ingu-380 Hz. Futhi ijubane lomsindo emoyeni lingu-400 ms.^-1. Imvamisa yamaza omsindo umuntu awezwayo…

I-A. 400 Hz

B. 420 Hz

C. 440 Hz

D. 460 Hz

I-E. 480 Hz

Ingxoxo

Kuyaziwa ukuthi:

Isivinini somthombo womsindo (v)_s) = 20 ms^-1

Isivinini somlaleli (v)_p= = 0

Imvamisa yomthombo womsindo (f) = 380 Hz

Isivinini somsindo (v) = 400 ms^-1

Kubuziwe: Imvamisa yamagagasi omsindo azwiwe

Impendulo efanele ngu-A.

4. Isitimela A sihamba ngesivinini esingamakhilomitha angama-72 ngehora kanti isitimela B sihambela komunye nomunye ngesivinini esingamakhilomitha angama-90 ngehora. Umshayeli wesitimela u-A ushaya ikhwela ngemvamisa engu-650 Hz. Uma isivinini sokusabalala komsindo emoyeni singama-350 ms^-1, khona-ke imvamisa unjiniyela u-B ayizwayo ku-A oshaya ucingo ithi...

I-A. 800 Hz

B. 740 Hz

C. 600 Hz

D. 540 Hz

I-E. 400 Hz

Ingxoxo

Kuyaziwa ukuthi:

Isivinini sesitimela A (v)_A) = 72 km/h = 20 m/s, isitimela esiseduze nesitimela B

Isivinini sesitimela B (v)_B) = 90 km/h = 25 m/s, isitimela esiseduze A

Imvamisa yomsindo wesitimela A (f)_A) = 650 Hz

Isivinini somsindo emoyeni (v) = 350 m/s

Kubuziwe: Imvamisa unjiniyela u-B ayizwayo ku-A oshaya ucingo

Impendulo:

Umthombo womsindo usesitimeleni A kanti umlaleli usesitimeleni B.

5. Umthombo womsindo uhamba ngesivinini esingama-20 m/s uye kumuntu omile. Imvamisa yomthombo womsindo ingu-380 Hz kanti isivinini somsindo emoyeni singama-400 m/s. Imvamisa yamaza omsindo azwiwa ngumuntu...

I-A. 400 Hz

B. 420 Hz

C. 440 Hz

D. 460 Hz

I-E. 480 Hz

Ingxoxo

Kuyaziwa ukuthi:

Isivinini somthombo womsindo (v)_s) = 20 m/s

Isivinini somlaleli (v)_p= = 0

Imvamisa yomthombo womsindo (f) = 380 Hz

Isivinini somsindo emoyeni (v) = 400 m/s

Kubuziwe: Ukuvama komsindo ozwakalayo

Impendulo:

Impendulo efanele ngu-A.

6. Ingane emi ishaya ikhwela ngesivinini esingu-490 Hz ibheke emotweni ehamba iye kuye njengoba kuboniswe esithombeni. Umehluko ozwakalayo phakathi kwegagasi eliqondile kanye negagasi elibonakala emotweni lingu-10 Hz. Uma ijubane lomsindo emoyeni lingu-340 m/s, khona-ke ijubane lemoto...

A. 6,9 ms^-1

B. 5,8 ms^-1

C. 4,4 ms ^-1

D. 3,8 ms ^-1

I-E. 3,4 ms ^-1

Ingxoxo

Kuyaziwa ukuthi:

Imvamisa yomsindo (f) = 490 Hertz

Isivinini somsindo emoyeni (v) = 340 m/s

Umlaleli usondela emthonjeni womsindo ukuze imvamisa yomsindo ozwakalayo ibe nkulu kunemvamisa yomthombo womsindo. Imvamisa yomsindo = 490 Hertz kanye nemvamisa ye-kite = 10 Hertz ukuze imvamisa yomsindo ozwakalayo (f') = 500 Hertz.

Kubuziwe: Isivinini semoto

Impendulo:

Ijubane lemoto lingu-6,9 m/s.

Impendulo efanele ngu-A.

7. Umfundi umi eceleni komgwaqo lapho imoto isuka kumfundi ngesivinini esingu-40 m/s ngenkathi ishaya uphondo olunemvamisa engu-300 Hz. Uma isivinini somsindo emoyeni singama-360 m/s, khona-ke imvamisa yophondo oluzwiwa ngumfundi ingu….
I-A. 250 Hz
B. 270 Hz
C. 300 Hz
D. 350 Hz
I-E. 400 Hz
Ingxoxo:
Ifomula yomphumela we-Doppler yomsindo :
f' = imvamisa yomsindo ozwiwa ngumlaleli (1/s = hz)
f = imvamisa yomsindo okhishwa ngumthombo (1/s = hz)
v = isivinini somsindo (m/s)
v_p = isivinini somlaleli (m/s)
v_s = isivinini somthombo womsindo (m/s)
Imithetho yokusayina:
u-v uhlala enethemba
v_p okuhle uma umlaleli esondela emthonjeni womsindo
v_p okungekuhle uma umlaleli eshiya umthombo womsindo
v_s okuhle uma umthombo womsindo usuka kude nomlaleli
v_s okungekuhle uma umthombo womsindo usondela kumlaleli
v_p = 0 uma umlaleli ethule
v_s = 0 uma umthombo womsindo usesekhona
I-Diketahui :
v_s = 40m/s
v_p = 0
f = 300 Hz
v = 360 m/s
Kubuziwe :
F'
Jawab :

Impendulo efanele ingu-B.

8. Umthombo womsindo uhamba ngesivinini esingama-30 m/s uqonde kumuntu omi eceleni komgwaqo. Imvamisa yomthombo womsindo ingu-360 Hz kanti isivinini somsindo emoyeni singama-380 m/s. Imvamisa yamaza omsindo azwiwa ngumuntu...
I-A. 391 Hz
B. 400 Hz
C. 430 Hz
D. 440 Hz
I-E. 460 Hz
Ingxoxo:
I-Diketahui :
v_s = – 30 m/s
v_p = 0
f = 360 hz
v = 380 m/s
Kubuziwe :
F'
Jawab :

Impendulo efanele ngu-A.

9. Umlaleli umi eduze komthombo womsindo onemvamisa engu-742 Hz. Omunye umthombo womsindo onemvamisa engu-700 Hz uhambela kumlaleli ngesivinini esingu-20 m/s. Uma isivinini somsindo emoyeni singama-340 m/s, khona-ke imvamisa yekhayithi ezwiwa ngumuntu…
I-A. 2 Hz
B. 3 Hz
C. 4 Hz
D. 5 Hz
I-E. 6 Hz
Ingxoxo:
I-Diketahui :
f₁ = 680 hz
f₂ = 700 hz
v_s1 = 0m/s
v_s2 = – 20 m/s
v = 340 m/s
Kubuziwe :
i-kite?
Jawab :
Umlaleli umi eduze komthombo womsindo, ngakho-ke kungaphethwa ngokuthi umthombo womsindo uphumule uma kuqhathaniswa nomlaleli. Imvamisa yomsindo ezwiwa ngumlaleli emthonjeni womsindo ophumule yile:
I-742 hz
Omunye umthombo womsindo uhamba. Bala imvamisa yomsindo ezwiwa yisilaleli emthonjeni womsindo ohambayo:

Imvamisa yegagasi lomsindo = umehluko ekuvameni kwamagagasi omsindo amabili aphazamisayo
Imvamisa ye-kite yile:
744 hz – 742 hz = 2 hertz
Impendulo efanele ngu-A.

10. Izimoto ezimbili u-A no-B ziyasondelana ngesivinini esingama-20 ms ngasinye.^-1 kanye nama-ms angu-40^-1I-Car B bese ishaya uphondo ngemvamisa engu-580 Hz, isivinini somsindo emoyeni singama-330 ms.^-1, bese kuthi imvamisa ezwakala ngumshayeli wemoto A ngaphambi kokudlula ibe….

1. I-670 Hz
2. I-700 Hz
3. I-720 Hz
4. I-760 Hz
5. I-800 Hz

Ingxoxo

Imithetho yokusayina:
u-v uhlala enethemba
v_p okuhle uma umlaleli esondela emthonjeni womsindo
v_p okungekuhle uma umlaleli eshiya umthombo womsindo
v_s okuhle uma umthombo womsindo ubheke kude nomlaleli
v_s okungekuhle uma umthombo womsindo usondela kumlaleli
v_p = 0 uma umlaleli ethule
v_s = 0 uma umthombo womsindo usesekhona

Kuyaziwa ukuthi:
Imvamisa yomthombo womsindo (f) = 580 Hz
Isivinini somlaleli (v)_p) = 20 ms^-1
Isivinini somthombo womsindo (v)_s) = -40 ms^-1
Isivinini somsindo (v) = 330 ms^-1
Kubuziwe: Imvamisa yomsindo ozwakalayo ngumlaleli (f')
Impendulo:

Ifomula yomphumela we-Doppler:
Impendulo efanele ingu-B.

11. Imoto A nemoto B ziyaqhela komunye nomunye, imoto A ihamba ngesivinini esingamakhilomitha angu-36 ngehora.^-1 ngenkathi ushaya uphondo olude olunemvamisa engu-700 Hz, isivinini somsindo emoyeni singama-340 ms^-1Uma imvamisa yomsindo we-horn izwakala ngumshayeli wemoto u-B = 600 Hz, khona-ke ijubane lemoto u-B liyi….

1. 30 ms^-1
2. 35 ms^-1
3. 40 ms^-1
4. 50 ms^-1
5. 65 ms^-1

Ingxoxo
Kuyaziwa ukuthi:
Imvamisa yomthombo womsindo (f) = 700 Hz
Imvamisa yomsindo ozwiwa ngumlaleli (f') = 600 Hz
Isivinini somthombo womsindo (v)_s) = 36 km/ihora = 36.000 amamitha / 3600 imizuzwana = 10 m/s
Isivinini somsindo (v) = 340 ms^-1
Kubuziwe: Isivinini somlaleli (v)_p)
Impendulo:
v_p okungekuhle ngoba umlaleli uyasuka emthonjeni womsindo.
v_s okuhle ngoba umthombo womsindo usuka kude nomlaleli.
Impendulo efanele ngu-C.

12. I-Ambulance A ihamba ngesivinini esingu-0,25 v ngemuva kwe-sedan B ehamba ngesivinini esingu-0,2 v ohlangothini olufanayo no-A. Ngaleso sikhathi, i-ambulensi A ikhala i-siren yayo ku-1.000 Hz. Uma isivinini somsindo singu-v, imvamisa ezwakala ngumshayeli we-sedan B…

I-A. 1.500 Hz
B. 1.250 Hz
C. 1.111 Hz
D. 1.067 Hz
I-E. 1.000 Hz

Ingxoxo
I-Diketahui :
Imvamisa yomthombo womsindo (f) = 1.000 Hz
Isivinini somthombo womsindo (v)_s) = -0,25 v (uma kuqhathaniswa nendawo eqhuba umsindo)
Isivinini somsindo (v) = v
Isivinini somlaleli (v)_p) = -0,2 v (uma kuqhathaniswa nendawo eqhuba umsindo)
Kubuziwe : Ukuvama komsindo ozwakalayo ngumlaleli (f')
Jawab :

Ifomula yomphumela we-Doppler:
Imithetho yokusayina:
u-v uhlala enethemba
v_p okuhle uma umlaleli esondela emthonjeni womsindo
v_p okungekuhle uma umlaleli eshiya umthombo womsindo
v_s okuhle uma umthombo womsindo ubheke kude nomlaleli
v_s okungekuhle uma umthombo womsindo usondela kumlaleli
v_p = 0 uma umlaleli ethule
v_s = 0 uma umthombo womsindo usesekhona

Impendulo efanele ngu-D.

13. Umthombo womsindo onemvamisa engu-640 Hz uhambela kumbukeli ngesivinini esingu-20 m/s. Uma isivinini somsindo emoyeni singama-340 m/s futhi umbukeli eqhela kumthombo womsindo ngesivinini esingu-10 m/s, khona-ke imvamisa yomsindo ozwiwa mbukeli…

I-A. 600 Hz
B. 660 Hz
C. 900 Hz
D. 980 Hz
I-E. 1300 Hz

Ingxoxo
I-Diketahui :
Imvamisa yomthombo womsindo (f) = 640 Hz
Isivinini somthombo womsindo (v)_s) = -20 m/s (uma kuqhathaniswa nomoya njengendawo eqhuba umsindo)
Isivinini somsindo (v) = 340 m/s (uma kuqhathaniswa nomoya njengendlela yokudlulisa umsindo)
Isivinini somlaleli (v)_p) = -10 m/s (uma kuqhathaniswa nomoya njengendawo eqhuba umsindo)
Kubuziwe : Ukuvama komsindo ozwakalayo ngumlaleli (f')
Jawab :
Impendulo efanele ingu-B.

14. Umthombo womsindo uhamba ngesivinini esingama-60 m/s ushiya umbukeli ngemuva kwawo ehamba ngendlela efanayo nomthombo womsindo ngesivinini esingama-10 m/s. Uma isivinini somsindo emoyeni singama-340 m/s kanti imvamisa yomthombo womsindo ingu-800 Hz, khona-ke imvamisa yomsindo ozwiwa umbukeli…
I-A. 700 Hz
B. 800 Hz
C. 940 Hz
D. 960 Hz
I-E. 1.120 Hz
Ingxoxo
I-Diketahui :
Imvamisa yomthombo womsindo (f) = 800 Hz
Isivinini somthombo womsindo (v)_s) = 60 m/s (uma kuqhathaniswa nomoya njengendawo eqhuba umsindo)
Isivinini somsindo (v) = 340 m/s (uma kuqhathaniswa nomoya njengendlela yokudlulisa umsindo)
Isivinini somlaleli (v)_p) = 10 m/s (uma kuqhathaniswa nomoya njengendawo eqhuba umsindo)
Kubuziwe : Ukuvama komsindo ozwakalayo ngumlaleli (f')
Jawab :

Impendulo efanele ngu-A.

Umthombo wombuzo:

Imibuzo Yefiziksi Yezivivinyo Zikazwelonke Zesikole Samabanga Aphezulu/Isikole Samabanga Aphezulu Sokufundela Umsebenzi