Файл: ГДЗ. Физика 9кл_Перышкин_Гутник_2001.pdf

>Zgh

J_r_gb_

3.

T

k

ν =

1

=

1

= 2

GZclb ν.

Hl\ l ν

=p

T

0,5 c

>Zgh

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4.

t

fbg

k

T

n

t

60 c

n = 600

ν =

1

; T

=

t

ν =

n

=

600

= 10

Hl\ l ν

GZclb ν.

=p

5.

kf kf kf kf

>Zgh

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6.

A = 10 kf

T =

1

=

1

= 2 c AZ k l_eh kh\_jrZ_l ihegh_

ν = 0,5 =p

ν

0,5

t

k

dhe_[Zgb_ b ijhc^_l imlv S = 4: kf

GZclb S.

Hl\_l S

kf

7.

Dhe_[exlky \ h^bgZdh\uo nZaZo \ kemqZyo [ ^ Dhe_[exlky \

ijhlb\hiheh`guo nZaZo \ kemqZyo Z \ ] _

MijZ`g_gb_

1.

GZijZ\

Fmij

v

?i

?d

?ihe

e_gb_

K lj_

;_a lj_

^\b`_gby

gb_f

gby

fZylgbdZ

Hl < d H

mf_gv

m\_e

mf_gv

m\_e

mf_gv

g_

baf_g

Hl H d :

m\_e

mf_gv

m\_e

mf_gv

mf_gv

g_

.

baf_g

Hl : d H

mf_gv

m\_e

mf_gv

m\_e

mf_gv

g_

baf_g

Hl H d <

m\_e

mf_gv

m\_e

mf_gv

mf_gv

g_

.

baf_g

2.

Z >` >` [ >` >` >` \ >` \h \k_o

kemqZyo

MijZ`g_gb_

1.

Kihkh[gu kh\_jrZlv

k\h[h^gu_ dhe_[Zgby l_eZ [ _

\ugm`^_ggu_ dhe_[Zgby²\k_ l_eZ

2.

Z ^Z gZijbf_j kljmgZ fmaudZevgh]h bgkljmf_glZ [ g_l

MijZ`g_gb_

1.

Z <ugm`^_ggu_ [ [eZ]h^Zjy dhe_[Zgbx fZylgbdZ \ qZklhlZ

fZylgbdZ jZ\gZ qZklhl_ fZylgbdZ m fZylgbdZ qZklhlZ [hevr_

q_f m fZylgbdZ m fZylgbdZ qZklhlZ f_gvr_ q_f m fZylgbdZ ]

l d bo ^ebgu b khhl\_lkl\_ggh kh[kl\_ggu_ qZklhlu kh\iZ^Zxl

2.

FZevqbd b \h^Z gZqbgZxl dhe_[Zlvky \ ijhlb\hnZa_

3.

Q_j_a k L = 1/ν k MijZ`g_gb_

>Zgh

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1.

λ

f

v =

λ

=

270

= 20

T

k

T

13,5

GZclb v.

Hl\_l v f k

>Zgh

J_r_gb_

2.

ν

=p

λ =

v

=

340

= 1,7

v

f k

ν

200

GZclb λ.

Hl\_l λ f

3.

>Zgh

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2.

v

f k

T

1,5

λ

f

v =

λ

=

6

= 4

Hl\_l T = 4 c.

GZclb T.

MijZ`g_gb_

E_lysZy ilbpZ kha^Z_l bgnjZa\mdh\u_ \hegu

MijZ`g_gb_

1.

DhfZj A\md kha^Z\Z_fuc bf kZfuc \ukhdbc

2.

Mf_gvrblky ihkdhevdm qZklhlZ __ \jZs_gby lZd`_ mf_gvrblky

3.

Ijb ih\ur_gbb l_fi_jZlmju kljmgZ jZkly]b\Z_lky i_jbh^ __

dhe_[Zgbc m\_ebqb\Z_lky qZklhlZ b khhl\_lkl\_ggh \ukhlZ

a\mqZgby mf_gvrZ_lky

MijZ`g_gb_

1.

G_l f_`^m A_fe_c b Emghc g_l mijm]hc kj_^u ih dhlhjhc fh`_l

jZkijhkljZgylvky a\md

2.

A\mdh\u_ \hegu jZkijhkljZgyxlky ih gblb

>Zgh

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1.

λ

f

v =

λ

=

2,9

= 1450

T

T

k

0,002

GZclb v.

Hl\_l v

f k

>Zgh

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2.

v1

f k

v

340

v

1483

v2

f k

ν

725

ν

725

λ

=

1

=

≈ 0,47 ; λ =

2

=

≈ 2,05 ;

v3

f k

1

2

ν

λ3

=

v3

=

5500

≈ 7,59 .

=p

GZclbλ1, λ2, λ3.

Hl\_l λ1

≈ f λ2 ≈ f λ3 ≈ f

ν

725

3.

A\md [m^ l jZkijhkljZgylvky

b ih

f_lZeem

b ih \ha^mom b

q

eh\_d mkeurbl ^\Z m^ZjZ

>Zgh

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4.

ta\

k

Sa\ = va\ta\; SiZj = viZjtiZj; Sa\ = SiZj; va\ta\ = viZjtiZj

va\

f k

v

=

v

t

=

340

2

= 20

tiZj

k

t

34

Sa\

= SiZj

GZclb viZj.

Hl\_l viZj

f k

5.

Dh]^Z \b^bfu_ b keurbfu_ m^Zju gZqbgZxl kh\iZ^Zlv kgh\Z lh

wlh agZqbl qlh q_eh\_d keurbl ij_^u^msbc i_j_^ \b^bfuf m^Zj

MijZ`g_gb_

1.

Kms_kl\m_l

2.

FZ]gblgh_

ihe_ [m^_l ^_ckl\h\Zlv gZ klj_edm k

gZb[hevr_c

kbehc \ lhqd_ N k

gZbf_gvr_c ² \

lhqd_ F K

jZkklhygb_f

fZ]gblgh_ ihe_ hkeZ[_\Z_l

MijZ`g_gb_

1.

Z ?klv wlh lhqdb D b K [ \ lhqd_ :.

GZ iZju lhq_d P −

Q,

X −

Y kh

2.

klhjhgu g_h^ghjh^gh]h fZ]gblgh]h

ihey ^_ckl\mxl kbeu h^bgZdh\u_

dZd ih fh^mex lZd b

ih

gZijZ\e_gbx l d PO =

QO,

XO =

YO.

v

F

5. Ih

ijZ\bem e_\hc jmdb

hij_^_ey_f qlh wlh iheh`bl_evgh

aZjy`_ggZy qZklbpZ

MijZ`g_gb_

1.

>Zgh

J_r_gb_

I = 4 A;

F = 0,2 H

B =

F

=

0,2

= 0,5

kf f

0,1 4

GZclb B.

Hl\_Il B

Le