Файл: ГДЗ. Физика 9кл_Перышкин_Гутник_2001.pdf

§51.

:g]ebckdbf mq_guf > D FZdk\_eehf \ ] WlZ l1. hjby \djZlp_ k\h^blky d lhfm qlh f_gyxs__ky \h \j_f_gb we_dljbq_kdh_ ihe_ ihjh`^Z_l i_j_f_ggh_ fZ]gblgh_ ihe_ b gZh[hjhl f_gyxs__ky \h \j_f_gb fZ]gblgh_ ihe_ ihjh`^Z_l i_j_f_ggh_ we_dljbq_kdh_ ihe_

Bklhqgbdhf we_dljhfZ]gblgh]h ihey kem`Zl aZjy^u ^\b`msb_ky k2.mkdhj_gb_f

Kbeh\u_ ebgbb \boj_\h]h we_dljbq_kdh]h ihey aZfdgmlu Z kbeh\u3. _ ebgbb we_dljhklZlbq_kdh]h ihey gZqbgZxlky gZ iheh`bl_evguo aZjy^Zo b aZdZgqb\Zxlky gZ hljbpZl_evguo

GZ kq_l k\_lZ kms_kl\h\Zeb§53. ^\_ hkgh\guo l_hjbb dhjimkdmeyjgZy1. b \hegh\Zy < hkgh\_ i_j\hc e_`Zeh ml\_j`^_gb_ h lhf qlh k\_l ² wlh ihlhd qZklbp \ hkgh\_ \lhjhc ml\_j`^_gb_ h lhf qlh k\_l²wlh \hegZ

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< ] Zg]ebckdbc mq_guc LhfZk Xg] ihdZaZe qlh k\_lm ijbkms2. _ k\hckl\h bgl_jn_j_gpbb Wlh ^hdZau\Zeh lh qlh k\_l h[eZ^Z_l \hegh\ufb k\hckl\Zfb

GZ ijh\hehqgh_ dhevph k jmqdhc aZlygmlh_ fuevghc ie_gdhc \ aZl3. _fg_gghc dhfgZl_ gZijZ\eyeky k\_l gZijbf_j `_elh]h p\_lZ Ijb wlhf gZ ie_gd_ h[jZah\u\Zebkv q_j_^mxsb_ky `_elu_ b l_fgu_ ihehku

K\_l iZ^Zy gZ ie_gdm qZklbqgh hljZ`Z_lky hl i_j_^g_c ih\4. _joghklb \ lhqd_ : Z qZklbqgh ijhoh^bl \gmljv ie_gdb b hljZ`Z_lky hl aZ^g_c ih\_joghklb \ lhqd_ < ihke_ q_]h \uoh^bl ba ie_gdb \ lhqd_ K <hegu \uoh^ysb_ ba lhq_d : b K y\eyxlky dh]_j_glgufb l d hgb h[jZamxlky hl h^gh]h b lh]h `_ bklhqgbdZ JZaghklv oh^Z ^ebg \heg aZ\bkbl hl lhesbgu ie_gdb dhlhjZy \ jZaguo lhqdZo jZaebqgZ ?keb lhesbgZ ie_gdb hdZ`_lky lZdhc qlh \hegu [m^ml \uoh^blv ba lhq_d : b K bf_y h^bgZdh\u_ nZau lh wlb \hegu ijb keh`_gbb mkbeyl ^jm] ^jm]Z < j_amevlZl_ \hagbdg_l fZdkbfmf bgl_jn_j_gpbhgghc dZjlbgu ² `_elZy ihehkZ ?keb lhesbgZ ie_gdb hdZ`_lky lZdhc qlh \hegu [m^ml \uoh^blv ba lhq_d : b K \ ijhlb\hiheh`guo nZaZo lh wlb \hegu ijb keh`_gbb [m^ml ]Zkblv ^jm] ^jm]Z < j_amevlZl_ \hagbdg_l fbgbfmf bgl_jn_j_gpbhgghc dZjlbgu²l_fgZy ihehkZ

Wlhl hiul ^hdZau\Z_l lh qlh k\_l h[eZ^Z_l \hegh\ufb k\hckl\Zfb

5. QZklhlu beb ^ebgu k\_lh\uo \heg jZaguo p\_lh\ jZaebqgu

6.

§54.

< \b^_ mijm]bo \heg ih^h[gh a\mdh\uf

1. L_f qlh k\_l jZkijhkljZgy_lky b \ \Zdmmf_

2. FZdk\_ee ij_^iheh`be qlh k\_l ² wlh qZklguc kemqZc we3. _dljhfZ]gblguo \heg Hkgh\Zgb_f ^ey wlh]h ihkem`beh lh qlh k\_lh\u_ b we_dljhfZ]gblgu_ \hegu y\eyxlky ihi_j_qgufb b h[eZ^Zxl h^bgZdh\hc kdhjhklvx jZkijhkljZg_gby

4. QZklbpZ we_dljhfZ]gblgh]h baemq_gby gZau\Z_lky nhlhghf

§55.

Hldjulb_ ;_dd_j_ey khklhyeh \ lhf qlh g_dhlhju_ \_s_kl\Z kZfhijhba\hevgh1. baemqZxl g_\b^bfu_ emqb gZa\Zggu_ \ihke_^kl\bb jZ^bhZdlb\guf baemq_gb_f

JZ^bhZdlb\ghklvx

2. < ] Wjg_kl J_a_jnhj^ hiulguf iml_f h[gZjm`be qlh jZ^bhZdlb\gh3. _ baemq_gb_ jZ^by g_h^ghjh^gh b bf__l keh`guc khklZ\ < lheklhkl_gguc k\bgph\uc khkm^ hg ihf_sZe djmibgdm

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jZ^by Imqhd jZ^bhZdlb\gh]h baemq_gby jZ^by ijhoh^be kd\hav madh_ hl\_jklb_ b ihiZ^Ze gZ nhlhieZklbgdm Ihke_ ijhy\e_gby nhlhieZklbgdb gZ g_c h[gZjm`behkv h^gh iylgh AZl_f hiul \b^hbaf_gyeb L_i_jv imqhd baemq_gby ijhoh^be q_j_a h[eZklv fZ]gblgh]h ihey ij_`^_ q_f ihiZklv gZ nhlhieZklbgdm < j_amevlZl_ fZ]gblgh_ ihe_ jZa^_eyeh wlhl imqhd gZ ljb b gZ nhlhieZklbgd_ ihke_ ijhy\e_gby h[gZjm`b\Zehkv ljb iylgZ ² h^gh ih p_gljm ^\Z k[hdm hl g_]h Wlh ]h\hjbl h lhf qlh imqhd baemq_gby khklZ\eyeb iheh`bl_evgh aZjy`_ggu_ α qZklbpu hljbpZl_evgh aZjy`_ggu_ qZklbpu b g_cljZevgu_ qZklbpu qZklbpu β γ

α qZklbpZ ij_^klZ\ey_l kh[hc iheghklvx bhgbabjh\Zgguc Zlhf ]4. eby k aZjy^hf jZ\guf fh^mex m^\h_ggh]h aZjy^Z we_dljhgZ β qZklbpZ ² we_dljhg qZklbpZ ² h^bg ba ^bZiZahgh\- we_dljhfZ]gblgh]h baemq_gbyγ

5. H keh`ghf kljh_gbb ZlhfZ

dhlhjh]h [ue hldZqZg \ha^mo b ijh\h^beky hiul ?keb gZ imlb qZklbp g_l gbdZdbo ij_]jZ^ lh hgb ihiZ^Zeb gZ wdjZg madbf ke_]dZα- jZkrbjyxsbfky imqdhf Ijb wlhf gZ wdjZg_ gZ[ex^Z_lky g_[hevrh_ k\_lh\h_ iylgh ?keb `_ l_i_jv ihklZ\blv gZ imlb qZklbp lhgdmx nhev]m N lh ijb \aZbfh^_ckl\bb k \_s_kl\hf hgbα- [m^ml jZkk_b\Zlvky ih \k_f gZijZ\e_gbyf gZ jZagu_ m]eu Hkgh\gZy qZklv α qZklbp ijhreZ kd\hav nhev]m fZeh baf_gb\ k\h_]h i_j\hgZqZevgh]h gZijZ\e_gby Gh g_[hevrZy qZklv α qZklbp jZkk_yeZkv gZ m]eu ihjy^dZ ° Z g_dhlhju_ ^Z`_ gZ m]eu ihjy^dZ

180°.

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J_a_jnhj^ ijbr_e d \u\h^m qlh klhev kbevgh_ hldehg_gb_ qZklbp3. \hafh`gh lhevdh lh]^Z dh]^Z \gmljb ZlhfZ bf__lky hq_gvα- kbevgh_ we_dljbq_kdh_ ihe_ LZdh_ kbevgh_ ihe_ lhevdh fh]eh [ulv kha^Zgh aZjy^hf kdhgp_gljbjh\Zgguf \ hq_gv fZehf h[t_f_ ih kjZ\g_gbx k h[t_fhf ZlhfZ Bkoh^y ba \k_]h wlh]h J_a_jnhj^ ij_^eh`be ieZg_lZjgmx fh^_ev ZlhfZ Kh]eZkgh wlhc fh^_eb \ p_glj_ ZlhfZ gZoh^blky iheh`bl_evgh aZjy`_ggh_ y^jh dhlhjh_ b [ueh ijbqbghc kbevgh]h hldehg_gby qZklbp <hdjm] y^jZ ^\b`mlky we_dljhgu fZkkZ dhlhjuo fgh]h fα_gvr_ fZkku y^jZ

Kh]eZkgh y^_jghc fh^_eb \ p_glj_ ZlhfZ gZoh^blky iheh`bl4. _evgh aZjy`_ggh_ y^jh <hdjm] y^jZ ^\b`mlky we_dljhgu fZkkZ dhlhjuo fgh]h f_gvr_ fZkku y^jZ

?keb qZklbpZ ijhe_lZ_l hq_gv [ebadh d y^jm lh hgZ kbevgh hldehgy5. _αlky hl i_j\hgZqZevgh]h gZijZ\e_gby ^\b`_gby dmehgh\kdhc kbehc L d jZaf_ju y^jZ hq_gv fZeu ih kjZ\g_gbx k jZaf_jZfb ZlhfZ lh hkgh\gZy qZklv qZklbp ijhe_lZ_l ^hklZlhqgh ^Ze_dh hl y^jZ b g_ bkiulu\Z_l kbevgh]hα hldehg_gby

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ljZ_dlhjbx ^\b`_gby qZklbpu fu fh`_f hij_^_eblv agZd aZjy^Z qZklbpu ih gZijZ\e_gbx ba]b[Z __ fZkkm wg_j]bx aZjy^ ih jZ^bmkm djb\bagu ljZ_dlhjbb

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