Tambayoyin misalai na aunawa

Misalai 12 na Tambayoyin Aunawa

1. Sakamakon auna diamita na marmara ta amfani da Ma'aunin dunƙule, wanda aka nuna a hoton da ke ƙasa, ƙayyade girman diamita na marmara!
A. 4,78 mmMisalin ma'auni tambaya ta 1
B. 5,28 mm
C. 5,70 mm
D. 8,50 mm
E. 9,28 mm
Tattaunawa
Ma'aunin sukurori yana amfani da na'urorin milimita kuma ƙaramin sikelinsa shine milimita 0,01.
Babban sikelin = milimita 4,5
Sikelin juyawa = 27,5 x 0,01 milimita = 0,275 milimita
Sakamakon aunawa = milimita 4,5 + milimita 0,275 = milimita 4,775 = milimita 4,78
Amsar da ta dace ita ce A.

Karin bayani

Misalin tambayoyin makamashin lantarki

Misalai 6 na tambayoyin makamashin lantarki

1. Ɗalibi yana kunna talabijin na tsawon awanni 6 a kowace rana. Ana haɗa talabijin ɗin da wutar lantarki mai ƙarfin Volt 220, don haka wutar lantarki da ke gudana a cikin talabijin ɗin ita ce 0,5 Ampere. Idan PLN ta saita kuɗin fito a Rp. 600,00/kWh, to farashin amfani da talabijin na tsawon wata 1 (kwanaki 30) shine….

A. Rp. 9.900,00

B. Rp. 11.880,00

C. Rp. 19.800,00

D. Rp. 23.760,00

Tattaunawa

Karin bayani

Samfurin ɗigo ta amfani da kayan haɗin vector naúrar

Kayan ninka digo ta amfani da sassan na'urar vector

Za mu iya ƙididdige samfurin scalar kai tsaye idan mun san sassan x, y da z na vectors A da B (vectors da aka sani).

Domin yin samfurin digo ta wannan hanyar, da farko muna yin samfurin digo na vectors na naúrar, bayan haka muna bayyana vectors A da B a cikin abubuwan da suka haɗa, muna lalata samfurin kuma muna amfani da samfurin vectors na naúrar.

Vectors na naúrar i , j, da k suna tsaye a tsaye, wanda hakan ke sauƙaƙa lissafin. Ta amfani da lissafin ninkawa na sikelin da aka samo a sama ( AB = AB cos theta ), mun sami:

Karin bayani

Giciye samfurin ta amfani da sassan vector naúrar

Kayan ninkawa ta amfani da sassan na'urar vector

Za mu iya ƙididdige samfurin giciye kai tsaye idan mun san sassan vectors ɗin. Tsarin iri ɗaya ne da na samfurin digo . Da farko, muna ninka vectors naúrar i , j , da k . Samfurin vector tsakanin vectors naúrar iri ɗaya sifili ne.

i x i = j x j = k x k = 0

Ta hanyar komawa ga lissafin ninka vector da aka samo a baya (A x B = AB zunubi θ) da kuma kadarar hana sauye-sauye na yawan vector (A x B = - B x A), sannan mu samu:

i x j = -j x i = k

j x k = -k x j = i

k x i = – i x k = j

Karin bayani

Vektor naúrar

Fahimtar Vektocin Raka'a 

Vektor naúra vektor ne wanda girmansa shine 1. Vektor naúra ba shi da raka'a kuma yana aiki don nuna alkibla a sararin samaniya. Don bambanta shi da vektor na yau da kullun, ana buga shi da kauri (don rubutun da aka buga) ko kuma a saka alamar ^ a sama da shi (don rubutun hannu).

A cikin tsarin daidaitawa na Cartesian (xyz) muna amfani da vector naúrar i don nuna alkiblar x-axis mai kyau, j don nuna alkiblar y-axis mai kyau, k don nuna alkiblar y-axis mai kyau.

Karin bayani

ninka giciye

Samfurin giciye na vectors guda biyu, misali vectors A da B, an rubuta shi a matsayin A x B ( A cross B ). Ana kiran samfurin giciye samfurin vector saboda sakamakon wannan ninkawa yana samar da adadin vector.

Misali, vector A da vector B suna kama da hoton da ke ƙasa.

ninka giciye 1Don ayyana samfurin giciye tsakanin vectors A dan B (A x B), muna zana vector A dan B kamar yadda aka nuna a hoton da ke sama, kuma an nuna kayan aikin vector B yana daidai da A, wanda yayi daidai da B sin theta.

Saboda haka, za mu iya ayyana girman samfurin giciye na vectors. A dan B (A x B) a matsayin samfurin girman vector A tare da kayan aikin vector B perpendicular zuwa vector A.

Karin bayani

Samfurin dot

Vectors ba lambobi ne na yau da kullun ba, don haka ba za a iya amfani da su kai tsaye ba. Dole ne mu yi amfani da ninka vector. Akwai nau'ikan ninka vector guda biyu: ninka digo da ninka giciye. Ana kuma kiran ninka digo scalar saboda yana samar da adadi na scalar. Ana kuma kiran ninka giciye ventral multiplication saboda yana samar da adadi na vector. Misali, akwai vector guda biyu, wato vector. A dan B. Ƙirƙirar ƙwayoyin cuta masu sikelin A dan B an bayyana tare da AB KTunda fagen yana amfani da alamar ɗigo, ana kiran wannan ninkawa samfurin digo. Yawan vector na A dan B an bayyana tare da A x BDomin yana amfani da rubutu x, to wannan ninkawa ana kiransa ninkawa giciye.

Karin bayani

Tambayoyin canja wurin zafi

Tambayoyi 3 game da canja wurin zafi

1. Kalli hoton da ke ƙasa!

Idan aka sanya bututu uku a cikin akwatin gilashi mai rufe kamar yadda aka nuna a hoton. Ana sanya hayakin takarda a ƙarshen bututun B kuma yana shiga ta bututun, to hayakin zai sake fita ta bututun A da C kamar yadda aka nuna a hoton. Wannan lamari yana faruwa ne saboda canja wurin zafi ta hanyar….

A. convectionTambayar canja wurin zafi ta 1

B. hanyar sadarwa

C. shigar da

D. radiation

Tattaunawa

Karin bayani