• $B!V(BPerfume $B$N$C$A(B $B$9$C$T$s(B$B!W(B(yahoo)$B!!$0$k$s$0$k$s%D%"!<(B DVD $B$G;0?M$N$9$C$T$s$,8+$i$l$^$9!#$N$C$A$O%N!<%a%$%/$G$b$"$^$j0u>]$,JQ$o$i$J$$!#(B • B!V(BBD8"dNA4?H(BB!W(B(yahoo)B!!A4?HN%"!< ## 4B7n(B27BF|!J7n!K(B B%7%s%/%mN((B 29 % B?2ITB-GITD4!#=7FBN=E,>/7:DA}(F-?!#CHJkHI&7FbE|J,N@] B%W%l%_%"(B Melodix!B!#;3N$$,Aj

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### $B:#F|$NC5$7$b$N(B • $B!V(B$BE7??$N=$M}!!@o;~Cf!!2{Cf;~7W(B$B!W(B(google)$B!!$3$J$$@(B NHK BNHVAHKK\4V@?Fs5s,=PF?J!#=M}O0zB7?O:@,!#(B • B!V(BB>>EDBnLi(B B5?;w2J3XB!W(B(yahoo)B!!>>ED5s,5?;w2J3X ## 4B7n(B2BF|!JLZ!K(B B%7%s%/%mN((B 28 % B$$$m$$mM=A[30N3H,5/-k!#(BKEEP CALM AND CARRY ON. BJ*1"+i%M%3%Q%s%A(BB!#2?EY8+Fb>P&!#%?%%_%s%0r7WCFoJoJ7FkH3mH+!#=lK7Fb2?,5$$KF~$i$J$+$C$?$s$@$m$&!#(B $BMn2<$9$k%M%3$NF02h(B$B$b2?EY8+$F$b>P$&!#%V%C%/%^!<%/$7$F$*$$F5J,,D@s@H-K8+?$$!#(B $B!V(BPick Me Up$B!W$N(B PV $B$r8+$F$$kHJ*M}3XELKOFk@w_?<$$=iEyNO3X$NJ}Dx<0$,$?$/$5$s=P$F$/$k!#(B

$BM$B!"H>7B(B r $B$N5e$NI=LL$+$i$NC&=PB.EY(B v$B!'(B $v = \sqrt{\frac{GM}{r}}$ $BM $B$N7B(B r $B$G1_1?F0$9$km $B$NJ*BN$N%]%F%s%7%c%k%(%M%k%.!<(B U$B!'(B

$U = \frac{GmM}{r}$

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$\frac{1}{2}mv_{r}^{2} - \frac{GmM}{r} = \frac{1}{2}mv_{R}^{2} - \frac{GmM}{R}$

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$\frac{mv^{2}}{r} = \frac{GmM}{r^{2}}$

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### $B:#F|$NC5$7$b$N(B • $B!V(B$B%U%!%s%U%!%s(B $B$/$k$j!!F}(B$B!W(B(yahoo)$B!!$42{G%$@$=$&$G!#(B

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