ahupūngao

2 Te kaupapa mahi-pūngao Te kaha kore-pūmau Te nekehanga i runga i te papa whakarara me te waku – Ngā Raru me ngā Otinga

1. Ka paheke tetahi poraka i raro i te papa whakarara me te waku. He aha te tere o te poraka ina pa te poraka ki te whenua? Ko te tauwehenga waku nekeneke ko 0.4. Ko te whakaterenga nā te kaha ā-papatipu ko 10 m/s ².

Mōhiotia:

Teitei tīmatanga (h_o) = 6 mita

Teitei whakamutunga ( _t ) = 0 m

Tere tīmatanga (v _o ) = 0 (poraka i te tīmatanga i te okiokinga)

Tauwehenga o te waku nekeneke (μ _k ) = 0.4

Pānuitia atu

Ngā mahi i mahia i roto i ngā tukanga thermodynamic – ngā raruraru me ngā otinga

1. Ka pēhia he hau tino pai mai i te āhua 1 ki te āhua 2 e whakaaturia ana i te kauwhata i raro nei. Tātaihia te mahi i mahia e te hau.

otinga

1 rita = 0.001 ^m3

Mōhiotia:

Pēhanga 1 (P1 ₎ = 10 kPa = 10,000 Pa = 10,000 N/ ^m2

Pēhanga 2 (P ₂ ) = 20 kPa = 20,000 Pa = 20,000 N/m ²

Pānuitia atu

Te tukinga me te tiaki i te pūngao miihini – ngā whakamātautau me ngā otinga

1. He ōrite te taumaha o ngā mea e rua , m1 ₌ m2 ₌ 0.5 kg i taka mai i te teitei ōrite e whakaaturia ana i te pikitia i raro nei. Ko te radius o te porowhita he 1/5 m. He tino pūmau te tukinga i waenga i ngā mea e rua. Tātaihia te tere o ia mea i muri i te tukinga. Ko te whakaterenga nā te kaha ā-papatipu he 10 m/ ^s2.

Mōhiotia:

Papatipu o te mea (m) = m₁ = m₂ = 0.5 kirokaramu

Teitei tīmatanga (h1 ₎ = 1/5 m

Teitei whakamutunga (h ₂ ) = 0 ( turanga o te ara )

Pānuitia atu

Te nekehanga o te nekehanga me te nekehanga o te pere – Ngā raruraru me ngā otinga

1. Ka whakaurua he pōro 0.2-kg ki roto i te kōhao C, e whakaaturia ana i te pikitia i raro nei. Ka whiua e te kaiwhiu te pōro i roto i te 0.01 hēkona, ā, ko te ara o BC i haere i roto i te 1 hēkona. Tātaihia te rahi o te kaha kia taea ai te whakauru i te pōro ki roto i te kōhao C. Ko te whakaterenga nā te kaha ā-papa he 10 m/ ^s².

Mōhiotia:

Koki (θ) = 60 ^o

Taumaha o te pōro (m) = 0.2 kg

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

Wā wā (Δt) = 0.01 hēkona

Pānuitia atu

Te nekehanga rārangi kore-taurite – ngā raruraru me ngā otinga

1.

E whakaatu ana te ripanga i runga ake nei i ngā raraunga mō ngā mea e toru e haere ana i te tawhiti ōrite me te whakaterenga pumau.

He aha te tere whakamutunga o te mea P me te tere tīmatanga o te mea Q?

Pānuitia atu

Te ariā kinetic o ngā hau me te ture tuatahi o te thermodynamics – ngā raruraru me ngā otinga

1. Kei roto i tētahi ipu he 4 rita te rōrahi o ngā hau pai, ā, ko tōna pēhanga he 3 atm (1 atm = 10 ⁵ Nm ^-2 ). Ka whakamahanahia ngā hau pai i te pēhanga pumau mai i te 27 ^° C ki te 87 ^° C. Ko te kaha wera o te hau he 9 JK ^-1 . He aha te rōrahi whakamutunga o ngā hau me te huringa o te pūngao ā-roto o ngā hau?

otinga

Tukanga isobaric (pēhanga pumau)

Mōhiotia:

Ko te rōrahi tīmatanga o te hau (V ₁ ) = 4 rita

Pānuitia atu

Te hurihanga o ngā tinana mārō – ngā raruraru me ngā otinga

Te wā o te kaha

1. E toru ngā kaha e pā ana ki tētahi kurupae e 6 mita te roa, e whakaaturia ana i te pikitia i raro nei. He aha te taipana kupenga e huri ana i te kurupae huri noa i te pūwāhi O hei tuaka hurihanga?

Mōhiotia:

Te tuaka hurihuri i te pūwāhi O.

Kaha 1 (F ₁ ) = F

Ko te tawhiti i waenganui i te rārangi mahi a F ₁ me te tuaka hurihuri (r ₁ ) = 3 mita

Pānuitia atu

Ngā puna raupapa me ngā puna whakarara – ngā raruraru me ngā otinga

1. E piri ana tētahi mea 160-karamu ki tētahi pito o tētahi puna, ā, ko te huringa o te roa o te puna he 4 cm. He aha te huringa o te roa o ngā puna e toru e honoa ana i roto i te raupapa me te whakarara , e ai ki te pikitia i raro nei?

Mōhiotia:

Te panonitanga o te roa o te puna (Δx) = 4 cm = 0.04 m

Taumaha (m) = 160 karamu = 0.16 kg

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

Pānuitia atu

Ngā nekehanga hurihuri – ngā raruraru me ngā otinga

1. Ko te taumaha o tētahi pūreirei he 2-kg te roa, ko tōna tere o te kore e nekeneke, ko I = 2/5 MR2 ^{. Mēnā ko te} tere o te kaha i runga i te pūreirei he 4 Nm, he aha te whakaterenga rārangi o te pūreirei? Ko te whakaterenga nā te kaha ā-papatipu ko g = 10 ms ^-2.

Kua mohiotia :

Ko te wā o te korekore o te pūrakau (I) = 2/5 MR ²

Te taumaha o te pūrakau (M) = 2 kg

Te kaha o te kaha (τ) = 4 Nm

Pānuitia atu

Ngā whanaketanga o ngā matūriki – ngā raruraru me ngā otinga

1. Ko te Taonga A he 6-kg te taumaha, me te Taonga B he 4-kg te taumaha , e honoa ana e te taura, ā, e tōia ana e te kaha o F = 60 N, e whakaaturia ana i te pikitia i raro nei. Ko te tauwehenga o te waku nekeneke i waenga i te papa me ngā taonga e rua he 0.5 (tan θ = ¾). Ko te whakaterenga nā te kaha ā-papa he 10 m/s ^2. He aha te rahi o te kaha kume?

Mōhiotia:

Papatipu o te mea A (m_A) = 6 kirokaramu

Taumaha o te mea B (m _B ) = 4 kg

Te Kaha (F) = 60 Newton

Pānuitia atu