ʻEpekema

Hoʻomaopopo ʻana
Ua manaʻo ʻia he kino paʻa i haku ʻia me nā ʻāpana he nui, a ʻo ke kaumaha o kahi mea ka huina o nā kaumaha o kēlā me kēia ʻāpana e hana ana i ka mea. ʻO ke kikowaena o ke kaumaha he kiko ma luna o kahi mea kahi i manaʻo ʻia ai ua hoʻopaʻa ʻia ke kaumaha o nā ʻāpana āpau e hana ana i ka mea ma ia wahi.

Haʻilula
Ua manaʻo ʻia ua haku ʻia kēlā me kēia kino paʻa me nā ʻāpana he nui, a ua like ka mamao o kēlā me kēia mai kekahi. Eia nō naʻe, no ka hoʻomaʻalahi ʻana i ka loaʻa ʻana o ke ʻano no ka hoʻoholo ʻana i ke kikowaena o ka nuipa, ua hana ʻia kahi hoʻomaʻalahi ma ka manaʻo ʻana he ʻelua wale nō ʻāpana o ke kino paʻa. Hiki ke kapa ʻia kēia mau ʻāpana ʻelua he ʻōnaehana kino paʻa.

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E aʻo pū kekahi Nā nīnau hoʻohālike no ke kikowaena o ke kaumaha

Ke Hoʻomaopopo nei i ke Kikowaena o ka Umekaumaha
Ua manaʻo ʻia kahi mea paʻa ua haku ʻia me nā ʻāpana he nui ma muli o kēia ka ikaika umekaumaha e hana ana ma luna o kēlā me kēia o kēia mau ʻāpana. I nā huaʻōlelo ʻē aʻe, he kaumaha ponoʻī ko kēlā me kēia ʻāpana. ʻO ke kikowaena o ke kaumaha o kahi mea he kiko ma luna a kokoke paha i ka mea kahi i kau nui ʻia ai ke kaumaha o nā ʻāpana āpau o ka mea.

Inā like ka nui o kekahi mea (like ka nui o kekahi mau mea a i ʻole ua hana ʻia ka mea me nā mea like) a like ke ʻano o ka mea (e.g. huinahā, huinahā, pōʻai) a laila kūlike ke kikowaena o ke kaumaha o ka mea me kikowaena o ka nuipa ke mea i waenakonu o ka mea. No ka huinakolu, aia ke kikowaena o ka nuipa ma 1/3 h, kahi ʻo h = ke kiʻekiʻe o ka huinakolu.

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ʻAʻole nā ​​mea a pau a kākou e ʻike ai i ke ola o kēlā me kēia lā e noho mālie mau ana. Hiki i kahi mea ke noho mālie i ka wā mua, akā inā e hoʻoneʻe ʻia, hiki iā ia ke neʻe. ʻO ka nīnau inā paha e hoʻi hou ia i kona kūlana mua ma hope o ka neʻe ʻana. Aia kēia i ka neʻe ʻana. nā ʻano kaulike o nā mea kēlā.
Inā loaʻa i kahi mea e hoʻomaha ana kahi haunaele (aia kahi ikaika hopena a i ʻole kahi manawa hopena o ka ikaika e hana ana ma luna o ka mea) a laila e neʻe ka mea. Ma hope o ka neʻe ʻana, e loaʻa nā mea ʻekolu, ʻo ia hoʻi: (1) hoʻi ka mea i kona kūlana mua, (2) neʻe ka mea mai kona kūlana mua, (3) noho ka mea i kona kūlana hou. Inā ma hope o ka neʻe ʻana, hoʻi ka mea i kona kūlana mua a laila aia ka mea i loko ke kaulike paʻaInā ma hope o ka neʻe ʻana, neʻe ka mea i kahi mamao aku mai kona kūlana mua, a laila aia ka mea i loko kaulike paʻa ʻoleMa ka ʻaoʻao ʻē aʻe, inā ma hope o ka neʻe ʻana o ka mea e noho mau ana i kona kūlana hou, a laila aia ka mea i loko kaulike kūlike ʻole.

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2 Nā laʻana o nā nīnau kaulike ʻāpana

1. Ua kau ʻia kahi mea me ke kaumaha o 10 kg ma luna o ke kaula. E hoʻoholo i ke kaumaha ma ke kaula (T)! g = 10 m/s²
Pahana

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5 mau laʻana o ka ikehu kinetic a me nā nīnau hana physics

1. He kaʻa me ke kaumaha o 5000 kg e kū mua ana, a laila neʻe i ka wikiwiki o 20 m/s. E hoʻoholo i ka hana holoʻokoʻa i hana ʻia ma ke kaʻa...
Pahana
Ua ʻike ʻia :
Nuipaʻa (m) = 5000 kg
Ka wikiwiki mua (v_o) = 0 m/s (i ka wā mua, ua kū ke kaʻa)
Ka wikiwiki hope loa (v_t) = 20 m/s
Ua nīnau ʻia Hoʻoikaika piha

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15 mau laʻana o nā nīnau kumu o Black

1. Ua hui ʻia ka hau he 0,2 kg ke kaumaha me ke kī mehana he 0,2 kg ke kaumaha. ʻO ka mahana o ka hau = – 10^oC, mahana kī mehana = 40^oC. Ka wela kikoʻī o ka hau = 2100 J/kg C^o, ka wela kikoʻī o ka wai = 4200 J/kg C^o, ka wela o ka hoʻohuihui ʻana o ka wai = 334.000 J/kg. Inā hui ʻia ka hau a me ke kī wela i loko o kahi ʻōnaehana pani kaʻawale, e hoʻoholo i ka mahana hope loa o ka hui ʻana.

Pahana
Ua ʻike ʻia :
Ka nui o ka hau (m es) = 0,2 kg
Ka nuipa o ka wai tī mehana (m tī) = 0,2 kg
Ka wela kikoʻī o ka wai (c wai) = 4180 J/kg C^o
Ka wela kikoʻī o ka hau (c es) = 2100 J/kg C^o
Ka wela o ka hoʻohuihui ʻana o ka wai (L)_f wai) = 334.000 J/kg

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5 mau laʻana o ka neʻe ʻana o ke kihi a me ka neʻe ʻana o ka laina ma ka neʻe pōʻai

1. Ke kaʻapuni nei kahi huila me ka radius o 30 kenimika i kahi mamao o 10 radians. Pehea ka mamao o kahi kiko ma ka lihi o ka huila e hele ai?
Pahana
ʻO ka mamao ma waena o ka lihi o ka huila a me ke kikowaena o ka huila = ka radius o ka huila.
Ua ʻike ʻia:
Radius (r) = 30 kenimika = 0,3 mika
Kihi (ʻanakē) = 10 mau radian
Nīnau ʻia: ka mamao i hele ʻia
Pane:

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2 Nā laʻana o nā nīnau no ka hoʻoholo ʻana i ka vector hopena me ka hoʻohana ʻana i nā vectors ʻāpana

1. F₁ = 6 N, F₂ = 10 N. ʻO ka hopena o nā vectors ikaika ʻelua…

Pahana
F_1x =F₁ ka helu 60^o = (6)(0,5) = 3 N (maikaʻi no ka mea aia ia ma ke kuhikuhi x maikaʻi)
F_2x =F₂ ka helu 30^o = (10)(0,5√3) = 5√3 = (5)(1,372) = -8,66 N (maikaʻi ʻole no ka mea aia ia ma ke kuhikuhi x maikaʻi ʻole)
F_1y =F₁ hewa 60^o = (6)(0,5√3) = 3√3 = (3)(1,372) = 4,116 N (maikaʻi no ka mea aia ia ma ke kuhikuhi y maikaʻi)
F_2y =F₂ hewa 30^o = (10)(0,5) = -5 N (maikaʻi ʻole no ka mea aia ia ma ke kuhikuhi y maikaʻi ʻole)

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2 Nā laʻana o nā nīnau no ka hoʻoholo ʻana i nā ʻāpana vector

1. Hoʻokumu ke vector ikaika F = 20 Newton i kahi kihi o 30^o i ka axis-x maikaʻi. E hoʻoholo i nā ʻāpana o ka vector F ma ka axis-x (F_x) a me ke axis-y (F_y).

Pahana
F_x = F cos 30^o = (20)(cos 30^o) = (20)(0,5√3) = 10√3 Newtons

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Nā haumāna laʻana o ka hoʻopilikia a me ka diffraction o ka mālamalama - single slit, a laila e hana ma nā pilikia hoʻopilikia a me ka diffraction o ka mālamalama.

1. ʻO ke kukui nona ka nalu o 700 nm e hele ana ma o kahi ʻāpana me ka laulā o 0,2 mm. Aia ke ʻano diffraction ma ka pale ma kahi mamao o 50 cm mai ka ʻāpana. E hoʻoholo i ka mamao ma waena o ka laina ʻeleʻele ʻelua a me ka laina kukui nui.
Pahana

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