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bộ giáo duc và đầo tạo đề thi thử đại học năm học 2009-2010 đề số 28 môn vật lý ( Thời gian làm bài 90 phút) !"#$%&' ( )*"+,-./( 0 )*"+ /( * )0"+,-./( )0"+ 1234(%5&' 6781 91 )2/cos(5 += tx . :1 )2/cos(25 += tx . 1 )2/cos(5 += tx . ;1 )4/cos(5 = tx . 0<(=!".7 >?@ 9127AB(>%"%1 :127%"%1 127C(>%"%1 ;127%"D%"%1 *E"%AF$G=" 91$&4&AF1 :1$H&4&.F&=1 1$.IJK71 ;1$#KLF>1 M'.%NH"OH.P6>8%4?#$QA%1 91R%N&%>P61 :1R%. "D%>1 1R%"%S#T%>1 ;1R%"#K7>1 U27P&K 7 91C$IKI&AV.#K?AW&N%XAN5W"%1 :1NYIKI&&AVN.OA.K>AN5W"%1 1C$IKI&AVA.K>NZ%#$1 ;1C$IKI&AVN%XNZ%ND%1 [\>.>9$&]!^4!C. _.D#W1:K .H.&?9 L 9: )"``+a- : )"+``b-+a-1M'.NHYW 9 1 91 AC u 2 2 sin(100 t) V = :1 AC u 2 sin 100 t V 3 = + ữ 1 AC u 2sin 100 t V 3 = + ữ ;1 AC u 2sin 100 t V 3 = ữ cM'.%NHBA$AFN* 91\AFN*7"d_&&3&%__'1 :1eFK NH>&f&P41 1a#$8&FV#$8f&P41 ;1<.4OK.$g` 1 hAW7< ^< 0 #%U.1<$ 4>&$NL "$0.1M&?< < 0 P"%7"#>K 91c :1g 1U ;1* g$!"#i)U`2jP>.>ekAF%^l%AWF"= 8.>'=4F"=$%&5>1M'.8_^NWC.84K k) m+2- 91*^1` bU n1 :1^Ug1` bU n 1[^*[1` bU n ;1g^01` bU n `KDK(LN?[. A'"1M>)`^P5&GNZ I.8&_>1M6P378&AC0^*cU"AHf H.7QK .#K 91h. :1U`. 1UU^c[. ;10. MG= "4AFC8o 91MG.(4?.>1 :1o4?P%=.' 4p.1 1q4&7P1 ;1rF$AFAG1 0L!"#NZU2j1MD=Hf5&G$K( )b `^U9+9K N?-W5&G$K( 0 ),`^U9K 91m`"1 :1"1 1m0`"1 ;1m*`"1 *M&%&7"4&7 $H(C47P@R%"%O M&W 91.OL1 :1.O"&K%>1 1=.A.K>AF"1 ;1K%41 M&.%4%(4. 91HC.#P48&FJ"#4 C."#O1 :1HC.#P48&FC."#4 J"#O1 1HC.#P48&FC."#4 C."#O1 ;1HC.#P48&FJ"#4 J"#O1 UM'.%NH"A$.%4NWW 91RC."#4]Y=^&Y=C.1 :1#C.G&?4C^C.%4JWHJW1 1R.>Y=]^.%4NWW(I.AF?_J1 ;1RJ"#4]Y=^WT!Y=J1 [<0^$(>8..X=$(>C.K!1A'N%&38=$(>K 911 :1^U1 101 ;1*1 cM&>.>ekAF%^KT!4 !&]!e AFHNZ91πm :1πm0 1πm0 ;1*πm h>.>e^k^.D#W14!C.1qQs `e ^s `k^ s ` K W>] !&]^!4 !_1:Ws `k )0s `e )0s `1 RWK L4K T WT!.>K B 91..$tm :1"L..$*tm 1..$tm* ;1"L..$tm g27%"%K "AW78"$%"%V.3A 91 N?1 :1!"# KAF61 1!"# AW"%1 ;1!"# N?1 0`<$n8\ MW$au.$!"#``2j1M'.NL"$1 91U. :1*. 1`.1 ;1.1 0QG=AFBA$.>k 91uJK7&&]_1 :1uJK7& JK7f&NW?! I.!"#1 1;&.>kK 'JK7& f&NW?PK> L1 ;1uJK7f&&]C.k1 00M&G.%"%8vb^AI"%%`^h 1RC%f AIW. K 0.^"DW AI$NL"$λ)`^[µ.1a"%N N[+ G"LGT-%>91*^0 1 :1^[ 1 1[^ 1 ;1^h 1 0*wCY> 2 1 ;, 2 1 ; → 3 2 2I, 1 0 ,*^0U+Ia-1:W_A#8 2 1 ;K ∆ . ; )`^``0 )g*+Ia-1uJK7K?AW8> 3 2 2IK 91h^U0+Ia- :1g^0+Ia- 1c1c0+Ia- ;1U^00+Ia- 0KDK(&IxY^K($A#K7AF%AH12N]5&GNZ' 7Ay(#LIxY.>*.&C&$12NU` .=0`"1) 2 π )`.m" 2 1S"#KLK > K H8K(A K 91U :1 1c ;1* 0Uz."DK .OG"KG8.yN7. 91$%&N]>_A%1:1$!"#%&N]>_A%1 1$N?%&N]>_A%1 ;1$N?7%&].>_>H.A%1 0[<J.^A#K7=$(>C.*K!12V"0J.^A#K7=$(>&? C.N?K!"LN!191gK!1 :1[K!1 10K!1 ;1^UK! 0c<' f&.>K 7 91f$1 :1C.1 1]1 ;1C.Yf1 0h>&ND%>k^"CY7> 91wCYVJK7UIa1 :1wCYJK7c^Ia1 1wCYJK7UIa1 ;1NW. )^``c*/. α )^``U1 . k )c^`1wCY 4V4JK7N?@1wCYVJK7c^Ia1 0g\O !.>ek#W.W(4$%&5_AF6 'W_&?%!de^k^ NZ NZ0`a1R_N5#D' 5W_!&]NZ91*` 2 a :1` 2 a 10`a;1`a *`>$A#K7.)U^`[cU1` b0c A4HLJ^chIa1\ K78>K 91*^hcU1` b0` A1.m" :1c^cU1` b0` A1.m"1 10^1` b0` A1.m"1 ;1h^h1` b0` A1.m"1 *$A#K7.LN?91RA'J*K!'JK78 46W @91qC.*K!1:1MJgK!11qC.gK!;1 MJ*K! *0^&B7*` !1{3. 4H&h"K [.1:?8K 91*. :10.1. ;1U. **%&> .F&(PC$ 91&?`` ` 1:1.F&11&?` ` R1;1&?` ` 1 *2> 210 84 Po K =$(> 91<A&3^>"&$ 91h& 0[&1 :1h`& 00&1 1h0& 0&1 ;1h[& 0h&1 *UWNY(>$NL"$λ)`^µ. 8.WN P1F%IKI&8 A.K>K .K 9)0Ia1M'.%&5WO ! H&?P 1 )[^[0U1` b* |" )*1` h .m"1Ia)^[1` bg | 91s 9R ≤b^0a1 :1s 9R ≤b^a1 1s 9R ≤b^a1 ;1s 9R ≤^Ua1 *[(4$^U9!"#U`2jP4!C.^$C.k) 0mπ212W!4K 91s)0``a1 :1s)*``a1 1s)*``a1 ;1s)*0`a1 *cW 8.WN P%NY(>$NL"$λ)``. λ})`^0Uµ.' =4#N!>8IKI&P=F1o%5F%IKI&8A.K> K .1 )[^[0U1` b* |" )*1` h .m"1 919)*^*gcU1` bg |1 :19)0^*hU1` bh |1 19)U^g[0U1` bg |1 ;19)^ghcU1` bg |1 *h\O !>.>ekAF%W)``"``π+a-' P.>K )"``π+9-1M6&]!8>.>K 91e)U`Ω1 :1e)``Ω1 1e)0`Ω1 ;1e)0``Ω1 *gM&.>(4AF%^WT!>.> &.>K!K7K )``"``π+a- )``"+``π,πm*-+.9-1F"=? &.>K 910U``~ :10^U~ 1U```~ ;1U`~ `>.>ek#W^&$4!C.k)mπ+2-/_$)[ µn &]!e1\OW(4!"#U`2j !>.>1M'.%&58eHF "=8.>>>191e)0``Ω :1e)``Ω 1e)``Ω ;1e)0``Ω 4 9: [`.$!:#5^!9.D .%. L!"#i)U`2j1R.&^&?4$"$fL*N_"$1a#&4"$&?4K 91)U.m"1 :1)0h.m"1 1)0`.m"1 ;1)0U.m"1 0u"$]lL!"#`2j^&4L#`^.m"&?l41 &? 4$0H.w {IY$w{)U.1N?). N?AF46 A"$ &41uW>H. $w$K.'K>{K 91` :10. 1. ;1 b. *WNY(>$NL"$λ)`^UU0µ.LF"=w)^0~ 8.WN P^ PN3$r N )0.91MG"=K7d87P1 91`^*c• :1`^0U• 1`^UU• ;1`^[U• LA'M)*^"1o%58A$P5&G() 0.L#)`^`.m"191` :1 4 π & 1 6 π & ;1 3 π & UKDK(IxY^&K!K?WKDP5&GNZ' 91JNZ^#NZ1 :1#NZ^JNZ1 1#NZ^#NZ1 ;1M=CB1 [CY> 7 3 p Li 2 17,3MeV + → α + 1R> 72?K'JK7V& fCY&?K N?@ 91*^`01` 0* Ia1 :1h^[h1` 0* Ia1 10[^`1` 0* Ia1 ;1*^c01` 0* Ia1 cM&?49: 0.$"$f$N_"$^!9#L+K .B "$-^!:#51M'.!"#8^NW#"$&?4K 0``.m"1 910U2j :10``2j 1U`2j ;1``2j hKDK(.O&ILK( ^$A€K M1uWK(N5DNL.d 'A€8KD.LK 91 2 T 1 :10M1 1M1 ;1 2 T 1 gM&.>"$F4WS8_)m```π+n- C. 84k)^[mπ+2-1R$"$7$!"#N?@k=4π 0 )`1 91U`2j1 :10U2j1 1``2j1 ;10``2j1 U`.%4%(4N.DIAH'"$WK 0`a12 W4NZ91[g^ca :10`c^hUa 1h^hUa ;1[g^0ha ;•90;*;9U9[;chg9`:0;*;U9[9c;h;g:0`:0 0090*00U:0[90c:0h;0g:*`;*;*0**:**U*[:*c9*h:*g:`09 *9:U:[9c;h;g:U`: . bộ giáo duc và đầo tạo đề thi thử đại học năm học 2009 -2010 đề số 28 môn vật lý ( Thời gian làm bài 90 phút) !"#$%&' ( )*"+,-./( 0 )*"+
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