Ukuqina komsindo - izinkinga nezixazululo

Ukuqina komsindo - izinkinga nezixazululo

1. Amaphuzu A no-B atholakala kumamitha angu-4 namamitha angu-9 ukusuka emthonjeni womsindo. Uma ngi_A nami_B ukuqina endaweni A kanye nephuzu B, bese kuba u-I_A : Mina_B =…

Kwaziwa:

The ibanga iphuzu A elivela emthonjeni womsindo (r_A) = amamitha angu-4

Ibanga lephuzu B ukusuka emthonjeni womsindo (r_B) = amamitha angu-9

The ukuqina komsindo endaweni A = I_A

Ubukhulu bomsindo endaweni B = I_B

Okufunayo: I_A : Mina_B

Isixazululo:

I _A r _A ² = I _B r _B ²

I_A 4² = Mina_B 9²

I_A 16 = ngi_B 81

I_A / Mina_B = 81 / 16

2. Ubukhulu bomthombo womsindo buyi-10^-9 Wm^-2. I_o = 10^-12 Wm^-2. Liyini izinga lomsindo lemithombo yemisindo eyi-10?

Isixazululo:

Kwaziwa:

I = 10 ^-9 W/m ²

I _o = 10 ^-12 W/m ²

x = i-10

Kwaziwa: Izinga lomsindo (β)

Isixazululo:

3. Izinga lomsindo lomthombo womsindo lingu-10 dB. Ungakanani umfutho wemithombo yomsindo eyi-1000? Umfutho omncane kakhulu I_o = 10^-12 Wm^-2.

Kwaziwa:

β = 10 dB

I _o = 10 ^-12 W/m ²

x = i-1000

wayefuna : Ukuqina

Isixazululo:

Ubukhulu bomthombo womsindo:

Ubukhulu bemithombo yomsindo eyi-1000:

I = (1000)(10^-11) = (10³)(10^-11)

Mina = 10^-8 W / m²

4. Izinga lomsindo lika-A lingu-40 dB, kanti izinga lomsindo lika-B lingu-60 dB. I_o = 10^-12 Ubusuku m^-2Thola i-100β_A : 10β_B.

Kwaziwa:

Izinga lomsindo le-A = 40 dB

Izinga lomsindo lika-B = 60 dB

I_o = 10^-12 Ubusuku m^-2.

wayefuna : 100β_A : 10β_B

Isixazululo:

Izinga lomsindo lika-100 A:

β = 40 + 10 ilogi 100

β = 40 + 10 ilogi 10²

β = 40 + (2)(10)(ilogi 10)

β = 40 + (2)(10)(1)

β = 40 + 20

β = 60 dB

Izinga lomsindo lika-10 B:

β = 60 + 10 ilogi 10

β = 60 + 10 ilogi 10¹

β = 60 + (1)(10)(ilogi 10)

β = 60 + (1)(10)(1)

β = 60 + 10

β = 70 dB

β_A : β_B

60: 70

6: 7

5. Uma iphuzu P lingumthombo womsindo, khona-ke isilinganiso sokuqina komsindo kumaphuzu S, R, kanye no-Q singu …

Kwaziwa:

Ibanga lephuzu Q kusuka emthonjeni womsindo (r)_Q) = amamitha angu-3

Ibanga lephuzu R kusukela emthonjeni womsindo (r_R) = amamitha angu-6

Ibanga lephuzu S kusuka emthonjeni womsindo (r_S) = amamitha angu-5

Ukuqina komsindo endaweni ethi Q = Mina_Q

Ukuqina komsindo endaweni R = I_R

Ukuqina komsindo endaweni ethi S = I_S

Okufunayo: Ukuqhathanisa ukuqina komsindo kumaphuzu S, R, kanye no-Q (I)_S: Mina_R: Mina_Q)

Isixazululo:

Ukuqina komsindo endaweni ethi S:

Ukuqina komsindo endaweni R:

Ukuqina komsindo endaweni ethi Q :

Ukuqhathanisa ukuqina komsindo kumaphuzu S, R, kanye no-Q:

6. Iphuzu A lingu-P elivela emthonjeni womsindo, iphuzu B lingu-2P elivela emthonjeni womsindo kanye nephuzu C lingu-4P elivela emthonjeni womsindo. Ukuqhathaniswa kwamandla omsindo at A, B, kanye no-C bangu …

Kwaziwa:

Diphuzu losizo A elivela emthonjeni womsindo (r_A) = P

Iphuzu lebanga B kusuka emthonjeni womsindo (r_B) = 2P

Iphuzu lebanga C kusuka emthonjeni womsindo (r_C) = 4P

Sukuqina komsindo endaweni A = Mina_A

Ukuqina komsindo endaweni ethile B = Mina_B

Ukuqina komsindo endaweni ethile C = Mina_C

Okufunayo: Ukuqhathanisa ukuqina komsindo at A, B, kanye no-C (I_A : Mina_B : Mina_C)

Isixazululo:

Ukuqina komsindo endaweni A:

Ukuqina komsindo endaweni ethile B:

Ukuqina komsindo endaweni ethilet C:

Ukuqhathanisa ukuqina komsindo at A, B, kanye C:

7. Abantu abayi-100 bebecula. Uma izinga lomsindo womfundi oyedwa lapho ecula lingu-40 dB (uma sicabanga ukuthi ingane ngayinye iyafana), khona-ke umfutho womsindo ophumayo ungo… (I_o = 10^-12 Wm^-2)

Kwaziwa:

Izinga lokuqina komfundi oyedwa (TI) = 40 dB

I _o = 10 ^-12 W/m ²

Tinani labafundi (x) = 100

Okufunayo: Umsindo oqinile wabafundi abayi-100

Isixazululo:

Umsindo oqinile womfundi:

Umsindo oqinile wabafundi abayi-100:

I _x = (x)(I)

I _x = (100)(10 ^-8 ) = (10 ² )(10 ^-8 )

I _x = 10 ^-6 W/m ²

8. Umsindo oqinile wemishini efanayo eyi-100 uwukuthi 10^-7 I-Watt.m^-2Uma mina_o = 10^-12 I-Watt.m^-2, khona-ke Izinga lomsindo womshini liyi…

Kwaziwa:

Umsindo oqinile wemishini eyi-100 (I)_x= = 10^-7 I-Watt.m^-2

I _o = 10 ^-12 W/m ²

Inani lemishini (x) = 100 = 10²

Wokuhleliwe: Izinga lomsindo womshini (i-TI)

Isixazululo:

Ukuqina komsindo womshini:

I _x = (x)(I)

10^-7 = (10²)(I)

I = 10 ^-7 / 10 ² = (10 ^-7 )(10 ^-2 ) = 10 ^-9

Izinga lomsindo womshini (IT):

9. I-sukuqina komsindo we-a umthombo womsindo 6 x 10^-6 W/cm²Uma umsindo umfutho Izinga lenyuke ngo-10 dB, linquma ubukhali bomsindo.

Kwaziwa:

Ukuqina (I) = 6 x 10^-6 W/cm²

I_o = 10^-12 W / m² = 10^-12 W / 10⁴ cm² = 10^-16 W/cm²

Kufunwa: Tukuqina komsindo

Isixazululo:

Ukungezwa kwe the ukuqina komsindo okungu-10 W/m² = 10^-3 W/cm² kufana nokwengezwa kwe the Izinga lomsindo eliyi-10 dB. Ukwengezwa komsindo eliyi-10² W / m² = 10^-2 W/cm² kufana nokwengezwa kwezinga lomsindo elingu-20 dB. Njalo njalo.

Uma izinga lokuqina likhuphuka ngo-10 dB, ukuqina kuyanda ngo-10^-3 W/cm²Ngakho-ke ukuqina kubas 6 x 10^-6 W/cm²) + (10^-4 W/cm²) = (6 x 10^-6 W/cm²) + (100 x 10^-6 W/cm²) = 106 x 10^-6 W/cm².

10. Umqapheli A uqhele ngamamitha ama-5 ukusuka emthonjeni womsindo. Ngenkathi umqapheli B eqhele ngamamitha ayi-10 ukusuka emthonjeni womsindo ofanayo. Ngakho-ke isilinganiso sokuqina komsindo esizwiwa abaqapheli B no-A singu…

Kwaziwa:

Ibanga lika-A ukusuka emthonjeni womsindo (r)_A) = amamitha angu-5

Ibanga lika-B kusukela emthonjeni womsindo (r)_B) = amamitha angu-10

Okufunayo: Tisilinganiso sobukhulu bomsindo esizwiwa ababukeli B no-A

Isixazululo:

I_B : Mina_A = 1 : 4

Impendulo efanele ngu-B.

1. Kuyini ukuqina komsindo futhi kuhluke kanjani ekuqineni komsindo?
   • Impendulo: Ukuqina komsindo kuyisilinganiso samandla omsindo ngendawo ngayinye, ngokuvamile kulinganiswa ngama-watts ngemitha yesikwele (W/m²). Umsindo, ngakolunye uhlangothi, uwumbono womuntu siqu wamandla omsindo, ngokuvamile olinganiswa ngama-decibel (dB). Nakuba umfutho uwukulinganisa okungokoqobo, okungokoqobo, umsindo uwukuhlangenwe nakho komuntu siqu okungahluka phakathi kwabantu.
2. Umthetho wesikwele ophambene uhlobana kanjani nokuqina komsindo?
   • Impendulo: Umthetho wesikwele ophambene uthi ukuqina komsindo kwehla ngesikwele sebanga ukusuka emthonjeni. Lokhu kusho ukuthi njengoba uqhubeka nomthombo, ukuqina kwehla ngokushesha.
3. Kungani imisindo emibili enamandla afanayo ingabi nomsindo ofanayo obonwayo?
   • Impendulo: Indlebe yomuntu inokuzwela okuhlukile kumaza ahlukene. Ngakho-ke, noma ngabe imisindo emibili inomfutho ofanayo kodwa amaza ahlukene, ingase ibonakale inamazinga ahlukene omsindo.
4. Ukuqina komsindo kuhlobana kanjani nokuphakama kwegagasi lomsindo?
   • Impendulo: Ubukhulu bomsindo buhambisana ngqo nesikwele sobukhulu begagasi lomsindo. Uma ubukhulu begagasi lomsindo buphindwe kabili, ubukhali buzokwanda ngesilinganiso sesine.
5. Kungani ukuhleba ekamelweni elithule kungase kuzwakale kahle, kodwa ukuhleba okufanayo eduze kwempophoma edumayo kungezwakali?
   • Impendulo: Lokhu kungenxa yomehluko emazingeni omsindo wangemuva. Ekamelweni elithule, izinga lomsindo wangemuva liphansi, okuvumela ukuthi umsindo uvele. Eceleni kwempophoma, umsindo onamandla ufihla umsindo othule, okwenza ungezwakali.
6. Uyini umkhawulo wokuzwa kanye nomkhawulo wobuhlungu maqondana nokuqina komsindo?
   • Impendulo: Umkhawulo wokuzwa umsindo othule kakhulu ongazwiwa yindlebe yomuntu evamile, ngokuvamile ngamandla acishe abe ngu- 10^-12 W / m². Umkhawulo wobuhlungu, omelela amazinga omsindo angabangela ubuhlungu kanye nomonakalo ongaba khona endlebeni, ususeduze 1 W / m².
7. Kungani imisindo ibonakala ithule kakhulu uma izwakala odongeni noma kwenye isithiyo?
   • Impendulo: Uma amaza omsindo ehlangana nesithiyo, amanye amandla ayabonakaliswa, amuncwe, futhi adluliselwe. Ukumuncwa nokubonakaliswa kunciphisa ukuqina komsindo odluliselwa ngesithiyo, okwenza umsindo uzwakale uthule.
8. Imvamisa ithinta kanjani ukuqina komsindo odonswa yizinto?
   • Impendulo: Izinto ezahlukene zinezilinganiso zokumunca ezihlukene zamaza ahlukene. Isibonelo, amaza aphansi (imisindo ye-bass) kunzima ukuwamunca futhi angangena kalula ezindongeni kunezaza eziphezulu.
9. Kungani izindawo zamakhonsathi nezindawo zemidlalo yeshashalazi zitshala imali ekuvimbeleni umsindo kanye nokwelashwa kwe-acoustic?
   • Impendulo: Ukuvimbela umsindo kusiza ukuvimbela umsindo wangaphandle ongadingeki futhi kuvimbela umsindo ukuthi ungaphumi ngaphandle, okuqinisekisa ukuthi umsindo ofunwayo kuphela ozwakala ngaphakathi kwendawo. Ukwelashwa kwe-acoustic kusiza ekulawuleni ukubonakaliswa komsindo ngaphakathi kwendawo ukuqinisekisa ukusatshalaliswa komsindo okucacile nokulinganayo.
10. Ubukhulu bomsindo buhlobene kanjani nomonakalo ongase ube khona wokuzwa?

• Impendulo: Ukuchayeka isikhathi eside emazingeni omsindo anamandla aphezulu kungaholela ekulimaleni noma ekulahlekelweni ukuzwa. Ukuqina kanye nobude bokuchayeka kokubili kudlala indima; ngisho nokuchayeka isikhathi esifushane emisindweni ephezulu kakhulu kungabangela umonakalo ohlala njalo, kanti ukuchayeka isikhathi eside emisindweni ephezulu ngokulinganayo nakho kungaba yingozi.