Nā Pūnaewele Gurumuda
Manaʻo o nā Nalu Electromagnetic: He Huakaʻi ma waena o ka Lewa a me ka Manawa He mea nui nā nalu electromagnetic i ko mākou ʻike ʻana i ke ao holoʻokoʻa a me kā mākou holomua ʻenehana o kēlā me kēia lā. Mai nā kumumanaʻo kuhi kahiko a hiki i ke ʻano ʻepekema akamai o kēia lā, ua loli nui ke kumumanaʻo o nā nalu electromagnetic. Ke ʻeli nei kēia ʻatikala i ka genesis, nā waiwai, nā noi, a me … E heluhelu hou aku
# Ka Pilina Ma waena o ke Kaumaha a me ke Kaumaha: He Hula Paʻakikī i ka Physics ʻO ka hoʻomaopopo ʻana i nā manaʻo o ke kaumaha a me ke kaumaha aia ma ka puʻuwai o ka physics a me kā mākou wehewehe ʻana i ke ao kino. ʻOiai ko lākou hoʻololi pinepine ʻana i ka ʻōlelo o kēlā me kēia lā, he mau mea like ʻole ke kaumaha a me ke kaumaha me nā ʻano kūikawā. Ke ʻeli nei kēia ʻatikala i nā mea hoihoi o … E heluhelu hou aku
Pehea e helu ai i ka ikehu hiki ke hana ʻO ka ikehu hiki ke hana ʻia (PE) kekahi o nā manaʻo nui i ka physics. Hōʻike ia i ka ikehu i loaʻa i kahi mea ma muli o kona kūlana, ka haku mele ʻana, a i ʻole ke kūlana. Aia nā ʻano like ʻole o ka ikehu hiki ke hana ʻia me ka ikehu hiki ke hoʻopaʻa ʻia e ka umekaumaha, ka ikehu hiki ke elastic, a me ka ikehu hiki kemika. Ke hoʻomaopopo nei pehea e helu ai i ka ikehu hiki ke hana ʻia ... E heluhelu hou aku
ʻOkoʻa ma waena o Scalar a me Vector i ka Physics Ma ke kahua o ka physics, ʻo ka hoʻomaopopo ʻana i nā manaʻo kumu o nā nui scalar a me vector he mea nui ia no ka nānā pono ʻana a me ka wehewehe ʻana i nā hanana kino. ʻO kēia mau ʻano nui ʻelua ke kumu o ke kūkulu ʻia ʻana o nā loina like ʻole a me nā kānāwai o ka physics. Ke komo nei kēia ʻatikala i loko o ka … E heluhelu hou aku
ʻO ka wehewehe ʻana i ke Kumumanaʻo o Einstein no ka Relativity Ua hoʻololi nā kumumanaʻo o Albert Einstein no ka relativity, nona ka Special Theory of Relativity (1905) a me ke Kumumanaʻo Laulā o ka Relativity (1915), i ko mākou ʻike i ka lewa, ka manawa, a me ke koʻikoʻi. ʻO kēia mau kumumanaʻo he mau pou o ka physics hou, e hoʻohuli ana i nā ʻano like ʻole mai ka cosmology a i ka mechanics quantum. Ma kēia ʻatikala, ke noiʻi nei mākou i nā kumu o kēia mau kumumanaʻo, … E heluhelu hou aku
# Nā Laʻana o nā Pilikia o ka Neʻe Laina Kaulike ʻO ka neʻe laina like, i ʻike ʻia hoʻi he neʻe rectilinear like, e pili ana i ka neʻe ʻana o kahi mea ma ka wikiwiki mau ma ke ala pololei. Hōʻike ʻia kēia ʻano neʻe e ka wikiwiki mau, e hōʻike ana ʻaʻohe wikiwiki. Ma nā ʻano like ʻole e like me ke kino, ka ʻenekinia, a me nā mea o kēlā me kēia lā … E heluhelu hou aku
Ke Hoʻomaopopo nei i ke Kānāwai Mua o Newton He mea hou nā hāʻawi a Sir Isaac Newton i ka ʻepekema, a ʻo kāna Kānāwai Mua o ka Neʻe ʻana, i kapa pinepine ʻia ʻo ke Kānāwai o ka Inertia, ke kū nei ma ke ʻano he hoʻokahi o nā kumumanaʻo koʻikoʻi loa i ka physics. Hoʻokumu kēia kānāwai i ke kahua no nā mechanics kuʻuna a kōkua iā mākou e hoʻomaopopo i ke ʻano o nā mea e neʻe ana a i ʻole … E heluhelu hou aku
3 mau nīnau e pili ana i ka hoʻohālikelike Gravity
1. ʻEkolu mau ʻāpana me ke kaumaha o 1 kg ma nā piko o kahi huinakolu like ʻaoʻao nona nā ʻaoʻao he 1 m ka lōʻihi. Pehea ka nui o ka ikaika umekaumaha i ʻike ʻia e kēlā me kēia ʻāpana kiko (ma G)?
pāʻoihana
ʻO ka nui o ka ikaika umekaumaha i ʻike ʻia e kekahi o nā ʻāpana.
F 12 = G (m 1 )(m 2 ) / r 2 = G (1)(1) / 1 2 = G/1 = G
F 13 = G (m 1 )(m 3 ) / r 2 = G (1)(1) / 1 2 = G/1 = G
Ka hopena o ka ikaika umekaumaha ma ke kiko 1:
3 mau nīnau e pili ana i nā kaulike kahua uila
1. He pōpō alakaʻi me ka radius o 10 cm ka nui o ka uila he 500 μC. Aia nā kiko A, B, a me C ma ke laina me ke kikowaena o ka pōpō ma kahi mamao o 12 cm, 10 cm a me 8 cm mai ke kikowaena o ka pōpō. E helu i ka ikaika o ke kahua uila ma nā kiko A, B, a me C!
Kaulana:
ʻO ke anawaena o ka pōpō alakaʻi (R) = 10 kenimika = 0.1 m
Uku uila (q) = 500 μC = 500 x 10 -6 C
r A = 12 kenimika = 0,12 m
r B = 10 kenimika = 0,1 m
r C = 8 kenimika = 0,08 m
ʻO ke kūpaʻa Coulomb (k) = 9 x 10 9
Makemake ʻia: Ka ikaika o ke kahua uila ma ke kiko A (E A ), ma ke kiko B (E B ) a ma ke kiko C (E C )
pāʻoihana:
3 mau nīnau e pili ana i ka hoʻohālikelike mau o ka pūnāwai
1. He 10 kenimika ka lōʻihi o kahi pūnāwai i hoʻokuʻu ʻia. Ma ka welau kūʻokoʻa, ua hoʻokuʻu ʻia kahi kaumaha 200 gram i mea e 11 kenimika ka lōʻihi o ka pūnāwai. Inā g = 10 m/s² , he aha ke ʻano o ka ikaika o ka pūnāwai?
ʻIke ʻia:
ʻO ka lōʻihi mua o ka pūnāwai (y 1 ) = 10 kenimika = 0.10 m
ʻO ka lōʻihi hope loa o ka pūnāwai (y 2 ) = 11 kenimika = 0.11 m
Ka loli ʻana o ka lōʻihi o ka puna (Δy) = 0.11 – 0.10 = 0.01 mika
ʻO ke kaumaha o ka ukana (m) = 200 grams = 0.2 kg
Kaumaha ukana (w) = mg = (0,2)(10) = 2 Newtons
Makemake ʻia: Paʻa puna (k)
pāʻoihana: