Maphunziro Oyambira a Fiziki

Tanthauzo la capacitor ya mbale yofanana

Kaputeni wa mbale yofanana ndi kaputeni yomwe imakhala ndi mbale ziwiri zoyenderana, mbale iliyonse ili ndi malo ofanana (A) ndi mbale ziwiri zolekanitsidwa ndi mtunda winawake (d), monga momwe zasonyezedwera pachithunzi chakumanzere. Mbale imodzi ya kaputeni ili ndi mphamvu yabwino (+Q) pomwe mbale ina ya kaputeni ili ndi mphamvu yoipa (-Q), komwe kuchuluka kwa mtengo wamagetsi Pa mbale iliyonse ndi yofanana. Kuti mphamvu isasunthire ku molekyulu ya mpweya, capacitor imapatulidwa ku chilengedwe, ndipo pakati pa mbale ziwirizi, pali vacuum.

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Nkhani yokhudza Lamulo la Kepler

Kodi mukukumbukirabe zokumbukira za kukwera galimoto koyamba? Mukakhala mgalimoto yoyenda, mumaona ngati mtengo kapena nyumba ikuyenda. Panthawiyo, mungaganize kuti mitengo kapena nyumba zikuyenda, pamene inu ndi galimoto muli kupuma. Ndipotu, inu ndi galimotoyo mumasuntha, pamene mitengo kapena nyumbazo mukupuma. Zochitika izi zoyenda zabodza zimachitika tsiku lililonse. M'mawa uliwonse, "dzuwa limatuluka" kum'mawa kenako limasunthira kumadzulo ndipo "limalowa" kumadzulo masana.

Mofananamo, usiku, nthawi zambiri mumawona mwezi ukuyenda kuchokera kum'mawa kupita kumadzulo. Kodi munayamba mwaganizapo kapena kuganiza kuti dzuwa ndi mwezi zimayendayenda padziko lapansi, pamene dziko lapansi linali bata?

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Nkhani yokhudza Moment of Force

1. Dzanja la lever

Unikani chinthu chomwe chimazungulira, monga chitseko cha chipinda. Chitseko chikatsegulidwa kapena kutsekedwa, chitsekocho chimazungulira. Ma hinge omwe amalumikiza chitseko ndi khoma amagwira ntchito ngati mzere wozungulira.

Chithunzi cha chitseko chikuwoneka kuchokera pamwamba. Unikani chitsanzo pomwe chitseko chimakankhidwira m'mphamvu ziwiri zomwezo zomwe zili ndi kukula ndi njira yofanana, komwe njira ya mphamvuyo ili molunjika ku chitseko. Poyamba, chitseko chimakankhidwira ndi mphamvu ya F₁, r₁ kuchokera ku mzere wozungulira. Pambuyo pake, chitseko chimakankhidwa ndi mphamvu ya F₂, r₂ kutali ndi mzere wozungulira. Ngakhale kukula ndi malangizo a mphamvu F₁ =F₂, mphamvu ya F₂ zimapangitsa kuti chitseko chizungulire mofulumira kuposa mphamvu ya F₁Mwa kuyankhula kwina, mphamvu ya F₂ zimayambitsa kuthamanga kwakukulu kwa angular poyerekeza ndi mphamvu ya F₁Mukhoza kutsimikizira izi.

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Nkhani yokhudza lamulo lachiwiri la Newton lokhudza kuyenda kozungulira

4.1 Ubale pakati pa mphindi ya mphamvu, mphindi ya inertia, ndi kuthamanga kwa angular

Ngati pali mphamvu yochokera (ΣF) yomwe ikugwira ntchito pa chinthu chokhala ndi kulemera (m) ndiye kuti chinthucho chimayenda molunjika ndi kuthamanga kwina (a). Ubale pakati pa mphamvu yochokera, kulemera, ndi kuthamanga imafotokozedwa ndi equation:

ΣF = ma

Iyi ndi equation ya Newtonlamulo lachiwiri.

Kuchuluka kwa kayendedwe kozungulira komwe kuli kofanana ndi mphamvu yochokera (ΣF) mu kayendedwe kolunjika ndi mphindi yochokera ya mphamvu (Στ). Kuchuluka kwa kayendedwe kozungulira komwe kuli kofanana ndi kulemera (m) mu kayendedwe kolunjika ndi mphindi za inertia (I). Kuchuluka kwa kayendedwe kozungulira komwe kuli kofanana ndi kuthamanga (a) mu kayendedwe kolunjika ndi kuthamanga kwa angular (α).

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1. Tanthauzo la likulu la mphamvu yokoka

Thupi lolimba limapangidwa ndi tinthu tambiri; chifukwa chake, mphamvu yokoka imagwira ntchito pa tinthu tating'onoting'ono tonseti. Mwa kuyankhula kwina, tinthu tating'onoting'ono tonse timakhala ndi kulemera kwake. Pakati pa mphamvu yokoka ya chinthu ndi mfundo yomwe ili pa chinthucho pomwe kulemera kwa ziwalo zonse za chinthucho kumaonedwa kuti kuli pakati pa mfundoyo.

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Nkhani yokhudza Mitundu ya mgwirizano wa thupi lolimba

Sizinthu zonse zomwe timapeza m'moyo watsiku ndi tsiku zomwe zimapuma nthawi zonse. Mwina poyamba chinthucho chimapuma, koma ngati chasunthidwa (monga mphepo) zinthu zimatha kuyenda. Vuto ndilakuti, kaya zinthu zitasuntha, zimabwerera pamalo ake oyamba kapena ayi. Izi zimatengera mtundu wa kulinganiza kwa chinthucho. Pambuyo posuntha, padzakhala njira zitatu, zomwe ndi:

(1) chinthucho chimabwerera pamalo ake oyambirira,

(2) chinthucho chimachoka pamalo ake oyambirira,

(3) chinthucho chimakhalabe pamalo ake atsopano.

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Nkhani yokhudza Kufanana kwa thupi lolimba

1. Chikhalidwe choyamba

Lamulo Lachiwiri la Newton amanena kuti ngati mphamvu yochokera pa chinthu (chinthu chomwe chimaonedwa ngati tinthu tating'onoting'ono) si zero,

Kenako chinthucho chidzayenda ndi liwiro losalekeza, pomwe njira yoyendetsera chinthucho = njira yoyendetsera mphamvu yonse. Ngati mphamvu yochokerapo ndi zero, ndiye kuti chinthucho chili pamalo opumulira kapena chikuyenda ndi liwiro losalekeza.

ΣF = ma

Chinthu chikakhala chili pampando kapena chikuyenda pa liwiro losasintha, chinthucho sichikhala ndi acceleration (a). Chifukwa acceleration (a) = 0, equation yomwe ili pamwambapa imasintha kukhala:

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Nkhani yokhudza Springs motsatizana komanso motsatizana

1. Springs mu mndandanda

Ngati kasupe walumikizidwa motsatizana, monga momwe zilili pachithunzi chomwe chili pambali, ndiye kuti:

1. Kuwonjezeka kwa kutalika kwa masika = kuwonjezeka kwa kutalika 1 + kuwonjezeka kwa kutalika 2

Δy = Δy₁ + Δy₁

2. Mphamvu yomwe imachitikira ndi kasupe wofanana = mphamvu yomwe imachitikira ndi kasupe 1 = mphamvu yomwe imachitikira ndi kasupe 2

F_s =F₁ =F₂

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1. Lamulo la Hooke la akasupe

Ngati kasupe wakokedwa kudzanja lamanja, kasupeyo adzatambasuka ndi kukwera kutalika (chithunzi 1). Ngati mphamvu yokoka si yayikulu, zimapezeka kuti kuwonjezeka kwa kutalika kwa kasupe (Δx) kukugwirizana ndi kukula kwa mphamvu yokoka (F). Mwa kuyankhula kwina, mphamvu yokoka ikakhala yayikulu, kutalika kwa kasupe kumakhala kwakukulu. Kuyerekeza kukula kwa mphamvu yokoka (F) ndi kuwonjezeka kwa kutalika kwa kasupe (Δx) kumakhala kosalekeza.

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Tanthauzo la lamulo la Ohm

Pafupifupi m'makina onse oyendetsera zitsulo, mphamvu yamagetsi imafanana ndi kuchuluka kwa mphamvu yamagetsi, komwe chiŵerengero cha mphamvu yamagetsi ndi mphamvu yamagetsi chimakhala chokhazikika. Kufotokozedwa mwa masamu kudzera mu equation:

ρ = E / J

E= munda wamagetsi, ρ = kusagwirizana, J = kachulukidwe panopa

ρ yokhazikika imatchedwa resistivity, yomwe mtengo wake ndi wokhazikika ndipo sudalira mphamvu yamagetsi yomwe imayambitsa magetsi.

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