磁铁为什么会有磁性?N、S极为何不同?为何磁铁只对铁和镍有吸引力?天然磁铁是什么物质组成的?
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/21 06:29:57
xYn#>֮/ȃEb Y?1ԅ"EjE]IIZw833|/TW٤dyB grTUo>
߬NwWDz2z_vx9QȾ/Mݧӽv'{"Sz!F6.p!Ӆx'
Jo>A:/95yR7!ꗲW%jay[;`@jZ!xZ X%J'M4HVhrE͏I9w_v ypu ^Vn%8v85K;r/&ru9y8f$eX9,lAaβt*lMCQ,?L,C\t:gѤ3rD9LR^j`WlPvU
0Hm`،+"
`݆HFt.)&&Acl{Mtܰ#>3rozx7áN]ʝrFTSѵC0*OWwk잦\O}GM#FiH"W>'[%!z"rDYx/,
;dzEa[8B omԟi|߸V/Uf17o-B#d9MBXz&α}=FgTODxG^iH&YNM iU؝#ڊ- 2\yS|<=
y:sm ǙIuHA*pbT&1rAK
ʜ)\,M[,%3%
*l\`)v<"1OwXeyw&:EUL
xT7Dn/M>Æli*|eeE$rmSw-DU`>V=!S[%}KH6`T
،m&pA1-
j[0$6i"isQy]ڕ7wF̓c1.D58'y鏉J<o8:z=?Y]~ ~DS{TG""JIrZ@}l<7{Apsղy,
FGB2'^Z)ȥ.P-JC8BE["ٰ;Pk9w.70b@ .R J(Q휺,bD-/!w?Ԏh:u@/>20`t}r]a^^ōf>J9PE;ݙ5JK"eq/a5)gYhh^m77gtrp25RNTӭ,ӓUգ>*Ek1NvYzoBЊl彏h3z7sfPtcU_dN@&}*O"mң 'rnPmXM/JñO1՟ziG{^R>]L+sv4yGMq%zاC*4D᠂/ SsT1]ʎMNSY! _y8jwx4`"̘
UtEq{8&5WFJy)Bw.(<\@Sh^S\5_Wr=NVk.'K.a?PɶjSu=>x:mqy4
l֡ߢRrg_Mpo L"}F-zuZ
jr@RrvL*ޑ=6D9?H1E矝 /sZPU zM] JK"J%+U#@YZ8kY
ػi,2w,xN۹rgGVJtmfNʚsjQfTAG\Ec$w~Ԫ/Y<Ȑ^\,*Du!u"}혧 T
NBƞggEԻC
KK>4#S@;0sfqhc?3^Lҁ+4B=6KÖwQ1qI