Một số câu khó đề VẬT LÍ 2013

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Một số câu khó đề VẬT LÍ 2013

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  !"#$%&'()*+,$-. / 01234567"845692#9: 0!";4: 1<#484569=⇒>?!9=+@A4.+#=3 BCD    !"#$%&'( ) $ **+$,-.$ / 012$+3+4501   EFGHIJK-456!/456+L 456-M DNO 56$6780 9":;++%&<.2=&'9!0>?@0   $2A*$B+0>CDE#$FGH+*F?45D9"9!,0H+* F?I%2- H+*F?40 I%7$J%*-#KL-0-4MK    -9K$%-NI%2&I%2+O$$P2QK5?C:R6L  S0  1-  TQ$U$VWXYZ[\]C*^9"+%&<D$*$_00+' E#$FGH+*F?+-7- K'%:4!,&` aH^- L)  bF- L)  bH c H^ -   /  bH  -   /  bF H^- /  bF- /  bH PE/7# "+QR  S+L 7# "+Q R  SE [d H$ 9"$%9I%eGWI%f45]$2$$%-NHWHK52 9g] 9πWhi]1H hd ht F F= ⇒       W ] W ] W ] GM m mv m R h R h R h T π + = = + + ⇒Whi]      GM T π /L0 ⇒L/L0 jN9"C*Q$U$V'Q+%&<D0>?KN$k0$J%!G @$%kZS+'N9l 63jK9B+#9"F_0ZSK- $Q*+BQ$α $  OM R OV R h α = = = + ⇒α/  /  m⇒3PE/7# "+QR  S+L 7# "+QR  SE  56T$[20G$:2 "^#4@2$Q:2 "^U:F"#$$P2 O  "  +  0G$  :2     =  ?  9K  =  2  J  4M  K  I   9K  I   9!   L    q q − + = I#n5_0"#$$P2O"9K$45 :g R R h+ O M V α N "+0G$:2 =?J4MK ) 9K0a$45 :g"+ 0G$:2 =2$Q ! a0a c0a /0a d0a [dI   ) 9K  0a9K   L    q q − + = W] HI   ) 9KW]   L    q q − + = W]⇒I   )    L    q q − + = ?&GK09(52⇒     /  q i q i+ = W] I   ) 9K  0a9KI   ) 9KW]     /  q i q i+ = ⇒  /0a DUU 56-R$HU$"#"0o,9<229!**pV$$Q4!$Q λ  q7$*$r22-(sCK00H+'0KI%2*G_0Z$*$9,+%,0 00$Q9,*t$6r$B$*$<%-"-*$:$%&_:J0KI%2*:3$ (45D9%.Q$9!0>CD$=22-(+2A2$-9,22 GZ$%&_K9,J=2N-7:B$0KK0c4!$Q λ  a 0µ c 0µ  0µ dL 0µ [d200A00 uv$J%9,*- k D x a λ = W] q0K+2A2:JNd9K-w(:Jv$ZK9,J=NQK9, =-b9Kdbdi0⇒ W x ] W ]k D x a λ + + = W] H^W]9KW]%&+2dWdi]⇒d0 H^W]⇒ ax kD λ =  −  0 0µ 'VWX 56 $6780 %y*$zC*+2**pV$$QJL  [\. %?C*AG$P2%yK{TC..0K%y*C*+2+0 ,&A?CAz  a  c )  ) d  P=$ W N Nhf P t t t ε = = = ⇒ Pt N hf = C 56$Z gC7=C,G$$Q$.%?Z{+K 4M 0KgC7=K&+2<%:UC,G$$P2  |9Ky9BK&$zB'%2@ I%*+NC,G$0}0$QK&0}C,G$+2Z(ja9. 2+.S a   0  q4M  |0KgC7='%O+0K a- c /- d/ [d{1S{  19!{  Z(j−  W] ⇒S1W{  ]⇒0ZSZ1S a Z1W{  S a ]/20/- 56$d;0 Gα$Q LLZ(jV9KG,   L N 2=&' ,&+2C7=    L L  / N p O α + → + [GC+..2&+2(C4p9%.Q$9! C4p2&!$P2Gα-4M$*$G,0 α %0  L%0 S )))%0 ~L ))L%c%)Z(j1$  F $P2G, L / O K aLZ(j cZ(j Z(j dZ(j [dFB%t7K 4M p O p p p α = + r r r 9N p p p α ⊥ r r '    O p p p p α = + ⇒0 ~ q ~ 0 α q α i0 C q C W] FB%t7K4M W ]) N p O p O K m m m m K K α α + + − − = + W] Qq α LLZ(j7"W]9KW]N04M$q C LZ(j9Kq ~ LZ(j

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