Page 56 - PRAKTIS BELAJAR FISIKA SMA KELAS XII
P. 56
( !63(809(90 (/(?( 2(8,5( !,4(5:;3(5 +(5 !,4)0(9(5 ?6;.> 1.@.;4 ?6;.> =.;@A9
&<9.>6?.?6 0.5.D. 1.=.@ @2>7.16 .86/.@ =2:.;@A9.; 1.; =2:/6.?.; 0.5.D.
!2@68. 0.5.D. 7.@A5 =.1. /61.;4 /.@.? .;@.>. 1A. :216A: 12;4.;
:2:/2;@A8 ?A1A@ @2>5.1.= 4.>6? ;<>:.9 ?2/.46.; ?6;.> .8.; 16=.;@A98.; =
12;4.; ?A1A@ 1.; ?2/.46.; 9.46 16/6.?8.; 12;4.; ?A1A@ /6.? & 68. ?6;.> # =
/6.? 1.; ?6;.> =.;@A9 :2:/2;@A8 ?A1A@ G .@.A ?20.>. :.@2:.@6? & G # G
=
?6;.> =.;@A9 @2>=<9.>6?.?6 96;2.> )A1A@ 1.@.;4 D.;4 :2;45.?698.; ?6;.>
=.;@A9 @2>=<9.>6?.?6 96;2.> 16?2/A@ ') )( %$! & ' ' .@.A ') )( & *'( & &
=
)29.;7A@;D. A8A: );2996A? A;@A8 =2:/6.?.; :2;D.@.8.; /.5C.
?6; p # ?6;.> /6.?
?6; & #
%925 8.>2;. & G I = ?6; & ?6; G I = 0<? = 1.; 12;4.; :2;46;4.@ (4)(8
?6; %;8-=5>->5 85:1-= ?1=6-05 657-
/.5C. = @.; = A8A: );2996A? 16 .@.? :2;7.16 >5:-= .5-> 0-: >5:-= <-:?@8
0<? = 919.1:?@7 >@0@? F
n
tani 2
p I
n
1
12;4.; # 6;128? /6.? :216A: =65.8 ?6;.> 1.@.;4 1.;
# 6;128? /6.? :216A: =65.8 ?6;.> /6.?
*2;@A8.; ?A1A@ 1.@.;4 1.; ?A1A@ /6.? D.;4 @2>/2;@A8 768. 0.5.D. #.@.5.>6 D.;4
16=.;@A98.; <925 =2>:A8..; .6> @2>=<9.>6?.?6 96;2.> #
.6>
!5!"
682@.5A6 # ?6;.> 1.@.;4 1.>6 A1.>. 1.; #
2;4.; :2;44A;.8.; %12!-!!. 8 :.8.
#
@.; %
#
?256;44. 16=2><925 G
=
1.=A; ?A1A@ /6.?;D. .1.9.5
& G I G I G G
=
) !63(809(80 2(8,5( $,8(7(5 $,3,2:0-
.5.D. @2>=<9.>6?.?6 1.=.@ 7A4. 16=2><925 1.>6 ?6;.> @.8 @2>=<9.>6?.?6 12;4.; (:( ;5*0
:2;44A;.8.; 8>6?@.9 @2>@2;@A ?2=2>@6 ;6829 .@.A 1682;.9 12;4.; =29.@ @6=6?
=<9.><61 &<9.><61 :2:69686 ?212>2@.; 029.5 =.>.929 16?2/A@ ?A:/A =<9.>6?.@<> G G 52=-7>5 ;814 75>5
@7@9 ':1885@>
?256;44. 5.;D. .>.5 42@.> 0.5.D. D.;4 ?27.7.> 029.5 D.;4 .8.; 9<9<? 1.>6 =<9.><61 G %;8-=5>->5 /-4-D-
6@A 68. .>.5 42@.> :2:/2;@A8 ?A1A@ @2>5.1.= ?A:/A =<9.>6?.@<> .:=96@A1< G %;8-=5>->5 7-=1:-
42@.>.; /2>8A>.;4 12;4.; 3.8@<> 0<? ?2=2>@6 16=2>965.@8.; =.1. !-"!1 G 4-9.@=-:
%;8-=5>->5 7-=1:-
%925 8.>2;. 6;@2;?6@.? 0.5.D. ?2/.;16;4 12;4.; 8A.1>.@ .:=96@A1<;D. <19-:?@8-: 0-: <19.5->-:
6;@2;?6@.? ?6;.> D.;4 @29.5 :292C.@6 =<9.><61 :2;7.16 G %;8-=5>->5 7-=1:- >1=-<-:
>1817?52
0<? I G '@0@? =1B>?1=
12;4.; < 6;@2;?6@.? 0.5.D. D.;4 1.@.;4 1.;
?A1A@ .;@.>. ?A:/A =<9.>6?.@<> 1.; .>.5 42@.> 429<:/.;4
@.8 @2>=<9.>6?.?6
18;9.-:3 @:D5 0-: -4-D-