Физика-8кл-Перышкин-2001-гдз (8 класс - Перышкин), страница 4

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fHf HfdHf HfFHf Hf4. IjbqbgZkhijhlb\e_gbykhklhbl\ lhfqlhwe_dljhgu\aZbfh^_ckl\mxlkbhgZfbdjbklZeebq_kdhcj_r_ldbb ijb wlhfaZf_^ey_lky bo mihjy^hq_ggh_^\b`_gb_§ 44.1. KbemlhdZgZijy`_gb_b khijhlb\e_gb_2. Kh[bjZxlp_ivkhklhysmxbabklhqgbdZlhdZZfi_jf_ljZkhijhlb\e_gbydexqZb iZjZee_evghih^dexq_ggh]h d khijhlb\e_gbx \hevlf_ljZ <wlm `_ p_iv ihhq_j_^gh \dexqZxlky ijh\h^gbdb k jZaebqgufb khijhlb\e_gbyfb Ijb g_baf_gghf gZijy`_gbb baf_jyxl kbem lhdZ \ jZaebqguoijh\h^gbdZo DZd ihdZau\Z_l hiul hgZ hdZau\Z_lky h[jZlgh ijhihjpbhgZevghckhijhlb\e_gbxijh\h^gbdZ3.

KbeZlhdZ\ ijh\h^gbd_h[jZlghijhihjpbhgZevgZ_]hkhijhlb\e_gbx4. KbeZ lhdZ I \ mqZkld_ p_ib ijyfh ijhihjpbhgZevgZ gZijy`_gbx U gZdhgpZowlh]hmqZkldZb h[jZlghijhihjpbhgZevgZ_]hkhijhlb\e_gbxR.5. I =U]^_I ²kbeZlhdZ\ mqZkld_p_ibU ²gZijy`_gb_gZdhgpZowlhR]hmqZkldZR ²khijhlb\e_gb_mqZkldZ6. U = IR.7. R =U.I§ 45.1. Khijhlb\e_gb_ijh\h^gbdZijyfhijhihjpbhgZevgh_]h^ebg_b h[jZlghijhihjpbhgZevgh_]hiehsZ^bihi_j_qgh]hk_q_gby2. GZ^hkh[jZlvp_ivbah[jZ`_ggmxgZjbkmgd_mq_[gbdZBaf_jyykbemlhdZI \ ijh\h^gbd_b gZijy`_gb_U gZ_]hdhgpZofh`ghgZclbkhijhlb\e_gb_R ihnhjfme_R =U.

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>eykhijhlb\e_gbyj_hklZlZb gZb[hevr_]h^himklbfh]hagZq_gbykbeulhdZ5.19§ 48.1. Kh_^bg_gb_ ijh\h^gbdh\ gZau\Z_lky ihke_^h\Zl_evguf _keb dhg_p h^gh]h ijh\h^gbdZ kh_^bgy_lky k gZqZehf ^jm]h]h Ko_fZihke_^h\Zl_evgh]h kh_^bg_gby ^\mo ijh\h^gbdh\ihdZaZgZgZjbkmgd_2. KbeZlhdZ3. H[s__ khijhlb\e_gb_ p_ib ijb ihke_^h\Zl_evghf kh_^bg_gbbgZoh^blkydZdkmffZkhijhlb\e_gbchl^_evguoijh\h^gbdh\R == R1 + R2 + ... + RN.4. GZijy`_gb_mqZkldZp_ibkhklhys_]hbaihke_^h\Zl_evghkh_^bg_gguo ijh\h^gbdh\ gZoh^blky dZd kmffZ gZijy`_gbc gZ dZ`^hfbagboU = U1 + U2 + ... + UN.§ 49.1. Kh_^bg_gb_ ijh\h^gbdh\ gZau\Z_lky iZ<:jZee_evguf _keb \k_ \oh^ysb_ \ g_]h ijh\h^gbdbh^gbfk\hbfdhgphfijbkh_^bgyxlky d h^ghc lhqd_ p_ib : Z \lhjuf dhgphf d^jm]hc lhqd_ < Ko_fZ iZjZee_evgh]h kh_^bg_gby^\moijh\h^gbdh\ihdZaZgZgZjbkmgd_2. GZijy`_gb_3.

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