Pūtaiao

Te Mārama ki te Mana Hiko

Ko te mana, e ai ki te wāhanga mahi me te pūngao, e whakamāramahia ana ko te mahi e mahia ana i roto i tētahi wā motuhake. Ko te mahi te tukanga hurihanga pūngao, nō reira ka taea te mārama ko te mana te huringa o te pūngao i roto i tētahi wā motuhake.

Ko te mana hiko te huringa o te pūngao hiko i roto i tētahi wā motuhake. E whakamārama ana te kōrero mō te pūmanawa hiko ka puta ngā huringa o te pūngao pūmanawa hiko ina haere te utu hiko mā roto i tētahi rerekētanga pūmanawa hiko.

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Ko te ātete he wāhanga o tētahi ara iahiko hiko e whakahaere ana i te nui o te iahiko hiko . Ko ngā ātete e whakamahia ana i ngā ara iahiko hiko he porotaka te āhua, he waea kei ngā pito e rua. Ko te uara ātete o tētahi ātete e tohuhia ana e tētahi waehere tae, ā, e whakaaturia ana ki te mata o te ātete.

Ka taea te whakatau i te uara ātete o te ātete mā te whakamārama i te waehere tae o te ātete . Hei mārama ki tēnei, tirohia te ripanga e whai ake nei, kātahi ka ako i te tauira raruraru hei whakatau i te uara ātete o te ātete.

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Tātai Ātete Hiko

I roto i te tuhinga mō te ture a Ohm, kua puta he tātai e whakaatu ana i te whanaungatanga i waenga i te ngaohiko hiko (V), te iahiko hiko (I) me te ātete hiko (R). Mā te pāngarau, ka whakaaturia mā te whārite:

E whakaatu ana tēnei whārite he rite tonu te ātete hiko (R) ki te ngaohiko (V) me te rite whakamuri ki te iahiko (I). Ko te nui ake o te ngaohiko, ko te nui ake o te ātete. I tetahi atu taha, ko te nui ake o te iahiko, ko te nui ake o te ātete. Ka whakamāramahia e tēnei whārite te ture a Ohm ina pumau te ātete (R). Mena kāore te ātete i te pumau, kāore tēnei whārite e whakamārama i te ture a Ohm engari e whakamārama ana i te ātete o te kaiārahi hiko.

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5 Ngā Tauira o Ngā Pātai Pūmanawa Hiko

1. Whakatauhia pūmanawa hiko i tētahi pūwāhi 1 cm mai i te utu q = 5,0 μC. Ko te pūmau o Coulomb (k) = 9 x 10⁹ Nm²C^-2, 1 μC = 10^-6 C.
Kōrero
E mōhiotia ana:
Te tawhiti mai i te utu (r) = 1 cm = 1/100 m = 0,01 m = 10^-2 m
Utu (q) = 5,0 μC = 5,0 x 10^-6 Coulomb
I pātaihia: Pūmanawa hiko (V)
Whakautu:

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11 Ngā tauira o ngā raruraru pūnga – ngā ara iahiko raupapa me ngā ara iahiko whakarara

1. Toru pūngahiko he hononga raupapa-whakarara e ai ki te pikitia i raro nei. Mēnā ko C₁ = 2 µF, C₂ = 4 µF, C₃ = 4 μF, kātahi ko te kaha whakakapinga ko…
Kōrero
E mōhiotia ana:
Pūnga C₁ = 2 µF
Pūnga C₂ = 4 µF
Pūnga C₃ = 4 µF
I pātaihia: Te kaha whakakapinga (C)

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Tauira o ngā Pātai Pūngao Pūmanawa Hiko

1. Ka whakaterea te tere o tētahi irahiko mai i te okioki mā roto i tētahi rerekētanga pūmanawa o te 12 volts. He aha te panonitanga o te pūngao pūmanawa o te irahiko?
Kōrero
E mōhiotia ana:
Utaina 1 irahiko (e) = -1,60 x 10^-19 Coulomb
Rerekētanga pūmanawa hiko = ngaohiko hiko (V) = 12 Volts
I pātaihia: Te huringa o te pūngao pūmanawa irahiko (ΔEP)
Whakautu:
ΔEP = q V = (-1,60 x 10^-19 C)(12 V) = -19,2 x 10^-19 Joule
Ko te tohu kino te tikanga pūngao pūmanawa hiko ka heke. Ina tata ki te pereti utu kino, ka eke te kaha hiko o te irahiko ki tōna taumata teitei. I muri i te taenga ki te pereti utu pai, ka eke te kaha hiko o te irahiko ki tōna taumata iti rawa.

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4 Ngā Tauira o ngā Raru Hiko

1. Mara hiko o te 8000 N/C poutū ki tētahi mata tapawhā me te horahanga mata o te 10 m²Whakatauhia rerenga hiko e tika ana i roto i te mata tapawhā!
Kōrero
E mōhiotia ana:
Papa hiko (E) = 8000 N/C
Te horahanga o te mata (A) = 10 m²
θ = 0^o (ka taurite ngā rārangi mara hiko ki ngā rārangi noa)
I pātaihia: Te rerenga hiko (Φ)
Whakautu:

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7 Ngā Tauira o ngā Raru Momentum Koki

Te nekehanga koki

1. Kei tētahi mea te wā o te korekore 2 kg m² ā, ka huri i runga i tētahi tuaka pumau me tere koki 1 rad/s. E hia te nui? te nekehanga koki taua mea?
Kōrero
E mōhiotia ana:
Te wā o te korenga o te kaha (I) = 2 kg m²
Tere koki (ω) = 1 rad/s
I pātaihia: Te nekehanga koki (L)
Whakautu:
Tātai nekehanga koki:

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5 Ngā tauira o ngā pātai mō te pūngao nekeneke hurihuri

1. He 1 kg m² ^te tere o te nekehanga o tētahi mea e hurihuri ana i runga i tētahi tuaka pumau me te tere koki o te 2 rad/s. He aha te pūngao nekeneke hurihuri o te mea?

Kōrero
E mōhiotia ana:
Te wā o te korekore (I) = 1 kg m²
Tere koki (ω) = 2 rad/s
I pātaihia: Pūngao nekeneke hurihuri (EK)
Whakautu:
Te tātai pūngao nekeneke hurihuri:

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E rima ngā tauira o te ture tuarua a Newton mō te nekehanga hurihuri

1. Ka takaihia te taura ki te taha o tētahi rango tuwhera, kātahi ka tōia te pito o te taura ki te kaha F kia huri ai te rango i runga i tōna tuaka. Mena wā o te kāhua he 2 Nm me te wā o te korekore he 1 kg m te rahi o te rango², tautuhia te whakaterenga koki o te rango!
Kōrero
E mōhiotia ana:
Te kaha o te kaha (τ) = 2 Nm
Te wā o te korenga o te kaha (I) = 1 kg m²
I pātaihia: Te whakaterenga koki o te rango!
Whakautu:
Te tātai ture tuarua a Newton mō te nekehanga hurihuri:

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