ahupūngao

4 Mahi kupenga Pūngao pūmanawa ā-papa Pūngao nekeneke – Ngā Raru me ngā Otinga

1. He mea 5-kg te taumaha kei te teitei o te 10-mita i runga ake i te whenua. Ko te tere o te kaha ā-papa he 10 m/s2 ^. He aha te mahi i mahia ki te mea hei neke ake i te mea ki te teitei o te 15-mita i runga ake i te whenua?

Mōhiotia:

Papatipu o te mea (m) = 5 kg

Teitei (h) = 10 mita

Te whakaterenga nā te kaha ā-papa (g) = 10 m/s ²

E hiahiatia ana: I mahia he mahi ki te mea hei neke ake i te mea ki te teitei o te 15 mita i runga ake i te whenua.

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Te wā o te kaha - ngā raruraru me ngā otinga

1. Mena ko F _R te kaha kupenga o F ₁ , F ₂ , me F ₃ , he aha te rahi o te kaha F ₂ me x?

Mōhiotia:

Te kaha kupenga (F_R) = 40 N

Kaha 1 (F ₁ ) = 10 N

Te kaha (F ₃ ) = 20 N

E hiahiatia ana: Te rahi o te kaha F ₂ me te tawhiti o x

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14 Te ture a Boyle Te ture a Charles Te ture a Gay-Lussac – Ngā Raru me ngā Otinga

1. Ko te pēhanga hau o te potae o te motuka he 432 kPa me te pāmahana o te 15 ° ^C . I muri i ētahi hāora, ko te pēhanga o te hau he 492 kPa. Mēnā kāore e arohia te whānui , he aha te pāmahana o te hau i roto i te potae?

Mōhiotia:

Pēhanga tīmatanga (P ₁ ) = 432 kPa

Pēhanga whakamutunga (P ₂ ) = 492 kPa

Te pāmahana tīmatanga (T ₁ ) = 15 ^° C

E hiahiatia ana: Te pāmahana whakamutunga (T ₂ )

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Te huringa Carnot – ngā raruraru me ngā otinga

1. Mena ko te wera e mimitihia ana e te miihini (Q ₁ ) = 10,000 Joules, he aha te mahi e mahia ana e te miihini Carnot?

Mōhiotia:

Pāmahana iti (T ₂ ) = 400 K

Te pāmahana teitei (T ₁ ) = 800 K

Te whakaurunga wera (Q ₁ ) = 10,000 Joule

E hiahiatia ana: Te mahi i mahia e te miihini Carnot (W)

Rongoā:

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Ngongo manometer – ngā raruraru me ngā otinga

1. E rua ngā momo wai e whakakīia ana tētahi ngongo manometer . Ko te mātotoru o te wai 1 ko ρ ₁ = 0.8 karamu.cm ^-3 , ā, ko te mātotoru o te wai 2 ko ρ ₂ = 1 karamu.cm ^-3 , ā, ko te teitei h ₁ = 10 cm, kātahi ka hia te teitei o h ₂.

Mōhiotia:

Te mātotoru o te wai 1 = 0.8 karamu.cm ^-3

Te mātotoru o te wai 2 = 1 karamu.cm ^-3

Teitei 1 = 10 henemita

E hiahiatia ana: Teitei 2

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Pūngao miihini – ngā raruraru me ngā otinga

Te mātāpono mahi-pūngao miihini

1. Ko te tauwehenga o te waku nekeneke i waenga i te poraka me te papa (μ _k ) he 0.5. He aha te nekehanga o tētahi mea/ngā mea? Ko te whakaterenga nā te kaha ā-papa he 10 m/ ^s².

Mōhiotia:

Ko te tauwehenga o te waku nekeneke (μ _k ) = 0.5

Taumaha o te poraka (m) = 4 kg

Ko te whakaterenga nā te kaha ā-papa (g) he 10 m/ ^s²

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Te pāmahana me te wera - ngā raruraru me ngā otinga

1. I runga i te inemahana X, ko te pūwāhi tio o te wai i te -30 ^°C me te pūwāhi koropupū o te wai i te 90 ^°C . 60 ^°C X = … ^..oC.

Mōhiotia:

Ko te pūwāhi tio o te wai = -30 ^o

Ko te pūwāhi koropupū o te wai = 90 ^°

E hiahiatia ana: 60 ^o X = ….. ^o C

Rongoā:

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Ngā karu tiro whetū – ngā raruraru me ngā otinga

1.

I runga i te kauwhata i runga ake nei, tautuhia te whakanui o te karu tiro ina wātea te kanohi mātakitaki.

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Te Termodynamics – ngā raruraru me ngā otinga

Ko te ture tuatahi o te thermodynamics

1. E ai ki te kauwhata PV i raro nei, he aha te ōwehenga o te mahi i mahia e te hau i te tukanga I, ki te mahi i mahia e te hau i te tukanga II?

Mōhiotia:

Tukanga 1:

Pēhanga (P) = 20 N/ ^m²

Te rōrahi tīmatanga (V ₁ ) = 10 rita = 10 dm ³ = 10 x 10 ^-3 m ³

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Ngā tukinga - ngā raruraru me ngā otinga

1. E neke ana te mea A (3 kg) i te tere o te 8 m/s, ā, e neke ana te mea B (5 kg) i te tere o te 4 m/s. Mēnā he tino ngāwari te tukinga i waenganui i ngā mea A me B, he aha te tere o ngā mea A me B i muri i te tukinga?

Mōhiotia:

Papatipu o te mea A (m1 ₎ = 3 kg

Papatipu o te mea B (m² ₎ = 5 kg

Ko te tere o te mea A (v ₁ ) = 8 ms ^–1

Ko te tere o te mea B (v ₂ ) = 4 ms ^–1

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