Nā pilikia i hoʻoponopono ʻia ma ke ʻano Physics kumu

Nā gratings diffraction - nā pilikia a me nā hoʻonā

1. A papa manamana aia i loko he 4000 mau ʻāpana i kēlā me kēia kenimika ua hoʻomālamalama ʻia me kahi monochromatic mālamalama a hana i ka laina ʻālohilohi lua-kaulike ma kahi kihi 30°. He aha ka ke kōā o ke kukui i hoʻohana ʻia? (1 Å = 10^-10 m)

ʻIke ʻia:

ʻO ka mamao ma waena o nā ʻoki (d) = 1 / (4000 ʻoki / kenimika) = 0.00025 kenimika = 2.5 x 10^-4 kenimika = 2.5 x 10^-6 mau mika

Kauoha (n) = 2

Hewa 30^o = 0.5

1 Å = 10^-10 m

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2 Kumumanaʻo hana-ikehu Ka ikaika mālama ʻole Ka neʻe ʻana ma luna o ka mokulele inclined me ka friction - Nā pilikia a me nā hoʻonā

1. Paheʻe kahi poloka i lalo i kahi mokulele hilig me ka friction. He aha ka poloka ka wikiwiki ke paʻi ka poloka i ka honua? ʻO ke koina o ka ʻūmiʻi kinetic he 0.4. ʻO ka wikiwiki ma muli o ke koʻikoʻi he 10 m/s².

ʻIke ʻia:

Ke kiʻekiʻe mua (h_o) = 6 mika

Ke kiʻekiʻe hope loa (h_t) = 0 mika

Ka wikiwiki mua (v_o) = 0 (poloka mua i ka wā hoʻomaha)

Ka helu o ka haʻalulu kinetic (μ_k) = 0.4

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Nā hana i hana ʻia ma nā kaʻina hana thermodynamic - nā pilikia a me nā hoʻonā

1. He kinoea maikaʻi ua hoʻopaʻa ʻia mai ka mokuʻāina 1 a i ka mokuʻāina 2 e like me ka mea i hōʻike ʻia ma ka pakuhi ma lalo nei. E hoʻoholo i ka hana i hana ʻia e ke kinoea.

pāʻoihana

1 lita = 0.001 m³

ʻIke ʻia:

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

Kaomi 2 (P₂) = 20 kPa = 20,000 Pa = 20,000 N/m²

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Ke kuʻi ʻana a me ka mālama ʻana i ka ikehu mechanical - nā probes a me nā hoʻonā

1. ʻElua mau mea like nuipa, m₁ = m₂ = 0.5 kg i hāʻule mai ke kiʻekiʻe like e like me ka mea i hōʻike ʻia ma ke kiʻi ma lalo nei. ʻO ke radius o ka pōʻai he 1/5 m. ʻO ka hookui ma waena o nā mea ʻelua he elastic kūpono. E hoʻoholo i ka ka wikiwiki o kēlā me kēia mea ma hope o ke kuʻi ʻana. ʻO ka wikiwiki ma muli o ka umekaumaha he 10 m/s².

ʻIke ʻia:

Ka nuipa o ka mea (m) = m₁ = m₂ = 0.5 kg

Ke kiʻekiʻe mua (h₁) = 1/5 m

Ke kiʻekiʻe hope loa (h₂) = 0 (ke kumu o ke ala)

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ʻO ka Momentum Impulse a me ka neʻe ʻana o ka Projectile - Nā pilikia a me nā hoʻonā

1. E hoʻokomo ʻia kahi pōpō 0.2-kg i loko o ka lua C, e like me ka mea i hōʻike ʻia ma ke kiʻi ma lalo. Hoʻokuʻi ka mea hahau i ka pōpō i loko o 0.01 kekona a ua hele ke ala o BC i loko o 1 kekona. E hoʻoholo i ka nui o ka ikaika i hiki ke hoʻokomo ʻia ka pōpō i loko o ka lua C. ʻO ka wikiwiki ma muli o ka umekaumaha he 10 m/s².

ʻIke ʻia:

Kihi (θ) = 60^o

Ka Mass o ka pōpō (m) = 0.2 kg

Ka wikiwiki ma muli o ke koʻikoʻi (g) = 10 m/s²

Ka manawa manawa (Δt) = 0.01 kekona

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Ka neʻe laina ʻole like - nā pilikia a me nā hoʻonā

1.

Hōʻike ka papa ma luna i ka ʻikepili o ʻekolu mau mea e hele ana i ka mamao like ma hoʻolalelale mau.

He aha ka wikiwiki hope loa o ka mea P a me ka wikiwiki mua o ka mea Q?

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ʻO ke kumumanaʻo Kinetic o nā kinoea a me ke kānāwai mua o ka thermodynamics - nā pilikia a me nā hoʻonā

1. Aia nā kinoea kūpono i loko o kahi pahu me ka nui o 4 lita a ʻo kona kaomi he 3 atm (1 atm = 10⁵ Nm^-2). ʻO nā kinoea kūpono ua hoʻomehana ʻia ma ke kaomi mau mai 27^oC i ka 87^oC. ʻO ka e kau wela o ke kinoea he 9 JK^-1He aha ka nui hope loa o nā kinoea a me ka loli o ka ikehu kūloko o nā kinoea?

pāʻoihana

Kaʻina hana Isobaric (kaomi mau)

ʻIke ʻia:

ʻO ka nui mua o ke kinoea (V₁) = 4 lita

heluhelu hou

Ka hoʻohuli ʻana o nā kino paʻa - nā pilikia a me nā hoʻonā

ʻO ka mmanawa o ka ikaika

1. Hana ʻekolu mau mana ma kahi kaola me ka lōʻihi o 6 mika, e like me ka mea i hōʻike ʻia ma ke kiʻi ma lalo nei. He aha ka ka ikehu ʻupena e hoʻohuli i ke kukuna a puni ke kiko O ma ke ʻano he axis o ka hoʻohuli ʻana?

ʻIke ʻia:

ʻO ke axis o ka wili ma ke kiko O.

Ikaika 1 (F₁) = F

ʻO ka mamao ma waena o ka laina hana o F₁ me ke koʻi o ka wili (r₁) = 3 mika

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Nā pūnāwai ma ke ʻano moʻo a me ke ʻano like - nā pilikia a me nā hoʻonā

1. Hoʻopili ʻia kahi mea 160-gram ma kekahi wēlau o kahi pūnāwai a ʻo ka loli o ka lōʻihi o ka pūnāwai he 4 kenimika. He aha ka loli o ka lōʻihi o ʻekolu nā pūnāwai i hoʻopili ʻia ma ke ʻano moʻo a me ke ʻano like, e like me ka mea i hōʻike ʻia ma ke kiʻi ma lalo nei?

ʻIke ʻia:

ʻO ka loli o ka lōʻihi o kahi pūnāwai (Δx) = 4 kenimika = 0.04 m

Ka Mass (m) = 160 grams = 0.16 kg

ʻO ka wikiwiki ma muli o ka umekaumaha (g) = 10 m/s²

heluhelu hou

Nā dinamika o nā neʻe rotational - nā pilikia a me nā hoʻonā

1. He pulley me ka manawa o ka inertia ʻO wau = 2/5 MR² he 2 kg ke kaumaha. Inā ʻo ka manawa o ka ikaika ma ka pulley he 4 Nm a laila he aha ka wikiwiki linear o ka pulley. ʻO ka wikiwiki ma muli o ke kaumaha he g = 10 ms^-2.

Kaulana :

ʻO ka manawa o ka inertia o ka pulley (I) = 2/5 MR²

Ka Mass o ka pulley (M) = 2 kg

Manawa o ka ikaika (τ) = 4 Nm

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