Λύσεις ερωτήσεων,...
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Απαντήσεις των ερωτήσεων και λύσεις των ασκήσεων όλων των κεφαλαίων της Φυσικής Γενικής Παιδείας Β Λυκείου
Transcript of Λύσεις ερωτήσεων,...
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1: : ,
1: . 0. .
: , .
x, 0u .
y, . t . x x
tux 0 0uux . y y 2
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),
. 2
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2: 20. ;
:
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) ;
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i) ;
ii) ;
) , :
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2,722
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g
httgh
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ii) : mssmtux 363/120
2: h = 500m 150m/s
.
)
.
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) .
) x, 0u .
y, . t . x x
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tux 0 0uux . y y 2
2
1gty
gtu y .
) : 2
22
2 /10)10(
50022
2
1sm
s
m
t
hggth
)
smu /1500 , st 10
mssmtux 150010)/150(0 .
3: 0,8m. 35m/s.
) ( ) . :
( smu /35 ) ( ). , , :
, ds dt. , :
dt
dsu (1)
, ds, d.
: R
dsd Rdds (2)
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, (1) (2) : dt
dsu
dt
dRu
: dt
d : Ru
, ( )
Ru . , .
,
smu /35 .
) :
2
222
/5,3062
2
8,0
)/35(
2
smm
sm
d
u
R
ua
4: , . 6.380km. T = 24h.
smhsh
m
T
Ru /73,463
/360024
638000022
222
/0337,06380000
)/73,463(sm
m
sm
R
ua
5: pulsar ( ) 13,8km 8,5z. .
smsm
fd
T
Ru /368322/15,8
2
138002
22
2
2
22
/19661028
2
13800
)/368322(sm
m
sm
R
ua
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6: 780 . 0,66m. :
) . ) .
) sms
mf
d
T
Ru /94,26
60
780
2
66,02
22
2
) 2
22
/2199
2
66,0
)/94,26(sm
m
sm
R
ua
8: . 12 . /3 ;
( ) 12 . , , , =12h=12h3600sec/h=43200sec. 60 . , =60min=60min60sec/min=3600sec.
: tt
, T
2 t
T
2
, : tT
2 t
T
2.
t :
tT
2
t
TT
TTt
TTt
T
2222
)(2
TT
TTt
, =/3 rad : sec5,654sec)3600sec43200(2
sec43200sec36003
rad
rad
t
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9: d = 2m
= 400m/s.
. ,
= 45. .
d 45.
d sec005,0/400
2
sm
m
u
dt .
10: h = 6.400km
4h. R = 6.400km, : )
. ) .
) smhh
m
T
hRu /5582
sec/36004
128000002)(2
) sradhh
rad
T/106,43
sec/36004
22 5
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2:
1: .
: . ( , ). , .
2: (S.I.) :
A. 1kgm/s2 B. 1Ns . 1kgm/s . 1Nm/s
: mup , 1
smkg / . , .
3: , . A. -. B. , ;
: . . B ,
B , n ,
N , A .
. n N , - ( ).
4: , . .
A. F , - - .
B. F - .
. , - .
. , - - .
n B
B
A N
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: A. . F - ( ), ( ).
. . F ( ).
. . ( ).
. . - ( ), ( ).
5: , , . , , , - . ;
: . , . . ,
(t ), t
ppF
, F
. . , , , .
6: . , , . ;
: , ( ). ,
( t
ppF
).
, , .
7: , . .
: . , ( ) , ( ).
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8: :
A. .
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. .
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. .
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, :
gtuu 0 0u 0u ,
. t
pF
:
BF
t
muF
t
pF
)(
mgBmgt
gtm
t
um
t
gtumB
t
umB
0
)()( 00
F = m
, .
10: 0 . 0/g. p = f(t) p/t = f(t);
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