Tải bản đầy đủ (.doc) (6 trang)

ĐỀ VÀ ĐÁP ÁN CHI TIẾT MÔN VẬT LÝ THI CHỌN ĐỘI TUYỂN HỌC SINH GIỎI TỈNH NĂM HỌC 2013 -2014

Bạn đang xem bản rút gọn của tài liệu. Xem và tải ngay bản đầy đủ của tài liệu tại đây (142.87 KB, 6 trang )

Bùi Sỹ Khiêm THPT Tĩnh Gia 2- Tĩnh Gia –Thanh Hóa DĐ: 0972549023
SỞ GD&ĐT THANH HÓA ĐỀ THI CHỌN ĐỘI TUYỂN HỌC SINH GIỎI CẤP TRƯỜNG
 NĂM HỌC 2013 – 2014
Môn thi: Vật lý
Thời gian: 180 phút (Không kể thời gian giao đề)
Câu 1: (5 điểm)
 !"#$% &'()**+,  -.,/#, 01
2 3# 014 5678 ",,
)
(*#9:;8 ",,
)
 5678 ",
</,

(*#9=>)?:;!8 ", "@/ ,/%!AB
ACD.,/=DE63AFGH.I//6J?7K ", 3
26LMF/!8 ",,
)
#,

:4N ",H/ 012/6JE63AF
O,A'H1P:QRS1/%<TI/,AN:
1.UV,!8 ",15-67/1AS1!A>@/ #WN/H16J:
/?XYMZA>@/ I/[:
H?FTN/58 "6J K 
)
(), Y

(

,:


?FS1\ N,&6J  KN ",
)
(
]*
s
π
 YN ",

(
^
_
s
π
:
@?F6JI/6JE (),:
2.;`5/8 ",H3HA/Y1aO4  4 Y):R8 ",,

"H3!R
8 ",,
)
bY1>!E4 &bXYMZA>@/ I/8 ",,
)
%/1
8 ",,

!R:N/6c8de:
Câu 2: (3 điểm)
Id>AC#, 01F @f&,AV "
!M%18FS1d">:;L1/I/%67,-IdJ1&
/d g6&H.l(_),:X>,%FFAB!M

%18FS1d"&
*
^h*p mmHg
=
6&$ &(^
*
;>L1/Id
GA&^9#i,:
/? jJMH"1<F!M%18FS1d"$ &=
*
;?67L1/
WIdG&:
H? FL1/
)
I/IdGE$ 
)
(i)
*
;HYA. !M%18FS1d"&
)
^9)p mmHg
=
:
Câu 3:(5 điểm)
;,4 $>ik
( )
Q
1 (l %m X
#
m

/d g #

j
 (
;
:QRS1/ $AE@Gd# $AE
!6YA87:
):;<,A. $!M/ 01!6Y61M//1:
:X7,$%%18I/,4#0%
m
/!A3&
)
m
6&

m
k
)
>)
,
)
,

l
h
Hình 2
V
1
C


R
L r
V
2
Q
R
M
i
Bùi Sỹ Khiêm THPT Tĩnh Gia 2- Tĩnh Gia –Thanh Hóa DĐ: 0972549023
/?>,$<B$2/
)
m
6&

m
:
H?>,$%%18I/,4HY%nI//6Y
)
X
#

X
0&
)
l
6&

l
:
oM@Ck

)#h
j( 
p
q
ri
)*
;( s
tp
q
)
l ()9*X
q

l (**X:
Câu 4:(5 điểm)
/81F,RD
)
#D

 -AF# C0u
)
#u

 -!/1Tl6&
fACF:6JMvRQ -A781FD
)
=>]?#/ %M 4T1
fS1/$&
)
:26J 3# gg/81F>%

M 4TS1/$&

:
/?>,$<B$2/u
)
#u

#
)
#

6&l:
H?QY
) 
()#

(]#l (9,6&/81FAB&,H.
f,8Y%18q 74HE,,-Mvw
,-01'67H!F,-01I/D

78M)#90H!F
,-01I/D
)
:F! Cu
)
6&u

:
Câu 5:(2 điểm)
 ;,%@CC%/1kC $#, $!M/dL1 g6&N#,

6Y/dL1#, $AE!!A3 \HY6&!@Gd@c:
\dYJM,4 $6&A>H&dMZ!Y&F$,6&>,<! 3
$@1I/C $:
…………………………………… Hết……………………………………


Q
 l
D
)

D


>]
Bùi Sỹ Khiêm THPT Tĩnh Gia 2- Tĩnh Gia –Thanh Hóa DĐ: 0972549023
ĐÁP ÁN
Câu Nội dung Điểm
Câu 1
(5đ)
):/?
) 
)* +
k
rad s
m m
ω
= =
+
4(*

*
x A cm rad
ϕ π
⇒ = − = − ⇒ =
x1dA/MZA>@/ k
%=)* ?x t
π
= +
,:
0,25
0,25
0,5
H?N/58 "6J@   K
)
 Y

Z<6J1d" A
K
)
 Y

)
) )
)
%
 i
x
c
A
π

ϕ ϕ
= = ⇒ = −

 

%
 ]
x
c
A
π
ϕ ϕ
= = ⇒ = −
S1O
 )
)
π
α ϕ ϕ
∆ = − =

x1dA/#
)*
t s
α π
ω

= =
0,25
0,25
0,25

0,5
?X3AFI/6JEN ",
)
&
) )
]
t
π
ϕ ω π π
= + = +
S1Ok
: _#9 _

t rad
π
α ω π π
= ∆ = = +
y1\ N  kx(_:zx
*

K6A/#
%1dA/x
*
(



A

x1dA/x()hz


(i]#_i=,?
0,25
0,25
0,25
0,25
0,25
@?
 
)* iv A x
ω
= ± − = ±
,+%
0,5
:UO1d" I/,#aZ!2/,
)
6&,

&,,

@ :
oM@C 31J1Zks(,

/(r,


x
ω
XJ17H3!a
F

r
7VL1G,#
*x⇒ >
{L1$ "6JH3!
)F ≥



)m x
ω
⇔ ≥
x cm
⇒ ≥
#XJH3!4 ((,
rZA>1d" I/,)%/1,H3!A/
z?X7
*
(
)
 )*
T
s
π
ω
= =
#
) )
+ )*  +k m rad s
ω
= =

0,25
0,25
0,25
i




)




)
Bùi Sỹ Khiêm THPT Tĩnh Gia 2- Tĩnh Gia –Thanh Hóa DĐ: 0972549023
4(
*
#>
*
(6&6
*
(*#%1dA/
*
ϕ
=
ZA>@/ 
( )
)
 % )*  +)*x c t
π

 
= −
 
,67
*
t t≥
0,25
Câu 2
(3đ)
/?Wx&Y@$I/:UOFA:|A4!H/ 01/k
) * )
^h* ^9i ^= ?p p h mmHg
= − = − =
q
)
(^z^i(i**=}?qX
)
(9^x=,,
i
?:
|A4!%/1k

= ?q
kq
p p h mmHg= −


(z^i=}?qX

(x=_)*r?=,,

i
?
oM@CMA4!/k

) )   ) )  ) ) 

)  )  ) 
^i
)#ii = ?
_)*
kq kq
p V p V pV T pV T t
p p h p h h mmHg
T T TV TV h
+
= ⇒ = = − ⇒ = + = +


/d%k
^i
)#ii = ?
_)*
kq
t
p h mmHg
h
+
= +

67FH.,,

0,25
0,25
0,75
0,75
H? VH&A//Mk
i) ^i
^9) )#ii =~?
_)*
h
h
+
= +

TM=~?/$,(^]]#_,,
0,5
0,5
Câu 3
(5đ)
/?W$M/2/ $!MI/,4;#;Q67@ $0&
)
ϕ
#

ϕ
)
/
C
Z
R
ϕ


=
#

/
L
Z
R
ϕ
=
) 
 
/ / )
C L
L
Z Z
C
R R
ϕ ϕ


= = = −

 $!M/ 016Y61M/67/1:
0,5
0,5
0,5
0,5
:/??/k
( ) ( )

 
 
) 
) 
 
%
) )
 
R R
R L R L
C C
ϕ
ω ω
ω ω
= =
   
+ − + −
 ÷  ÷
   
 
) 
) 
) )
L L
C C
ω ω
ω ω
   
− = −
 ÷  ÷

   
( )
( )
) 
) 
) 
) 
) ) )
*
) ) )
*
L
C
L
C
ω ω
ω ω
ω ω
ω ω

 
− − − =

 ÷
 



 


+ − + =
 ÷

 

) 
) 
) 
)
*
) )
L
C
LC
LC
ω ω
ω ω
ω ω

+ =




= → =


0,5
0,5
0,5

H?/k
  
)R C
U U U+ =
#
  
R L
U U U+ =
#

L
R
C
=
0,5
]
=4?
Bùi Sỹ Khiêm THPT Tĩnh Gia 2- Tĩnh Gia –Thanh Hóa DĐ: 0972549023

L C R
U U U→ =
]
 
)
 

R
R
R
U

U U
U U
→ + =

( )

   
 )  )
:
R R
U U U U U U→ = −

) 
 
) 
R
U U
U
U U
=
+
r-!k
 
) AB
U U U= +
) 
 
) 
 
% *#th

R
AB
U U U
U U U
ϕ
→ = = =
+
0,5
0,5
Câu 4
(5đ)
/?ANMD
)
A7D

67@
)
(/k

)
)
)
€
@
r€
=
6&

) ) )
 )

) )
€  € €
@ @
r€ r€
l l
l l
− −
= − = − =
xM@4I/$k
)  ) 
)
)   )  ) ) 
€ € € €
 :
r€ @ r€ = € € ? € € €l l
   
= − − =
 ÷  ÷
− − − +
   
x1dA/k
)
=lw€
)
w€

?(
)
l€
)

w
)

)


z€
)


=)?
ZaANMD

EA7D
)
/k


=lw€
)
w€

?(

l€

w


)



z€
)


=?
;/=)?6&=?/1 "•6&HY g/ k

)


=€

w€
)
?(€
)


=

w
)
?
}YS1Tku
)
wu

(

 )
) 
  )
:
  l
 

 ÷
 
0,5
0,5
0,5
0,5
0,5
0,5
H?W&H!F,-01I/D
):
X7H!FI/,-01I/D

78M)#9
0H!F,-01I/D
)
/k
u
)
(=w)?
)

6&u


(=w)?
)
)#9:
n%k
)

u
)#9
u
=
=i?
K!%$1 Lku
)
wu

(i=]?
T$=i?6&=]?/ ku
)
()9@M6&u

()@M
0,5
0,5
0,5
0,5
Câu 5
(2đ)
5,4 $>6‚:{$!M/dL1 g6&N0
%€:
ruf6Y/dL1  $!M0k

l

ql
;

rU! 3 $@1I/C $V<
YJM :
r;<! 3;k
;N @ $$1@CS1/,4&k
R
U
I
R
=
=)?
-!k

C
C
C
U
I U fC
Z
π
= =
=?
K=)?6&=?%1dA/k


R R

C
C
U U
I U fC C
R fRU
π
π
= = ⇒ =
=i?
0,25
0,25
0,5
0,5
0,5
9
A
R
C
B
V
Bùi Sỹ Khiêm THPT Tĩnh Gia 2- Tĩnh Gia –Thanh Hóa DĐ: 0972549023
…………………………………………… Hết……………………………………………
h

×