Page 23 - PRAKTIS BELAJAR FISIKA SMA KELAS XII
P. 23
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# " " # .1.9.5 =2:/29<8.; .>.5 :A8. 429<:/.;4
82@68. :.?A8 1.>6 ?.@A :216A: 82 :216A: 9.6;;E. &2:/6.?.; 1.;
=2:.;@A9.; @2>7.16 ?20.>. /2>?.:..; 2;4.; 8.@. 9.6; 82@68. 429<:/.;4
1.@.;4 :2;42;.6 :216A: 9.6; ?2/.46.; 429<:/.;4 .8.; 16=.;@A98.; 1.;
?2/.46.; 9.6;;E. .8.; 16@2>A?8.; .@.A 16/6.?8.; &2:/6.?.; @2>7.16 8.>2;.
429<:/.;4 :2:69686 829.7A.; /2>/21. =.1. :216A: /2>/21.
%1&%5
# "
* 87<81 9.6+2*;*7
+ &4.6* 9.6+2*;*7
0.586+*70 "
! "
"81&)5 % % %& ! " "
!,"!0 ! :2:=2>965.@8.; 0<;@<5 =2>6?@6C. =2:/6.?.; ?21.;48.;
!,"!0 " :2:=2>965.@8.; /2>8.? 429<:/.;4 82@68. =2:/6.?.; @2>7.16
) 0 % . % , )A1A@ .;@.>. /2>8.? 1.@.;4 1.; 4.>6? ;<>:.9 16?2/A@ #% %$ $
)2:2;@.>. 6@A ?A1A@ .;@.>. /2>8.? /6.? 1.; 4.>6? ;<>:.9 " 16?2/A@ #% %$
- 6 - / % # A/A;4.; .;@.>. ?A1A@ 1.@.;4 1.; ?A1A@ /6.? ?2/.4.6 /2>68A@ &.1.
!,"!0 " @6;7.A9.5 :A8. 429<:/.;4 !2@68. @6/. 16 =2>:A8..;
/.@.? 1A. :216A: :.?65 16 :216A: =2>@.:. .9.: ?29.;4 C.8@A $
:2;2:=A5 7.>.8 # =.1. :216A: 821A. ?21.;48.; :2;2:=A5 7.>.8
=.1. :216A: =2>@.:. .>6 1A. ?246@64. 12;4.; ?.9.5 ?.@A ?6?6 E.;4 ?.:.
E.8;6 16=2><925
vt s vt
sin i 1 1.; sin r 2
#*-* *+*- 4. -2+=*< ;=*<= a a a a
*5*< =7<=4 6.7=73=44*7 ./.4 ?256;44. 12;4.; :2:/.;16;48.; 1A. =2>?.:..; @2>?2/A@ 16=2><925
27<.:/.:.7;2 0.586+*70 5*< 272
<.:-2:2 *<*; ;.+*:2; <8704*< sin i v
4=7270*7 -.70*7 9*73*70 @*70 1 I
+.:+.-* +.-* ;.12700* =3=70 sin r v 2
=3=70 *<*;7@* 6.6+.7<=4 12;4.; ?A1A@ 1.@.;4
0.586+*70 .:.<*7 4=7270*7
<.:;.+=< -29*;*70 -2 *<*; " ?A1A@ /6.?
5.69.70*7 4*@= @*70 3=0* v 02=.@ >.:/.@ 429<:/.;4 =.1. :216A: =2>@.:. 1.;
+.:+.7<=4 0.586+*70 ;.12700* v 02=.@ >.:/.@ 429<:/.;4 =.1. :216A: 821A.
=3=70 =3=70 4=7270*7 6.7024=<2
486+27*;2 -=* 0.586+*70 2<= $01!,!!- 6 16?2/A@ A8A: &2:/6.?.;
#.:9*-=*7 -=* 0.586+*70
<.:;.+=< -*9*< 6.701*;254*7
27<.:/.:.7;2 487;<:=4<2/ -*7
27<.:/.:.7;2 -.;<:=4<2/ 2>8.? 429<:/.;4 1.@.;4 =.1. =2>:A8..; ?A.@A :216A: 12;4.; ?A1A@ 1.@.;4 G
"81&)5 ! 86/.@;E. 8202=.@.; 429<:/.;4 @2>?2/A@ :2;A>A; 1.>6 : ? :2;7.16 : ?
2>.=.8.5 ?A1A@ /6.? /2>8.? 429<:/.;4 @2>?2/A@
!5!"
682@.5A6 G v : ? 1.; v : ? )2?A.6 12;4.; $01!,!!- 6
?6; : ?
?6;" : ?
:.8.
: ? ?6; : ?
?6;"
: ? : ?
?256;44. 16=2><925 " G
#:*4<2; .5*3*: 2;24* =7<=4 .5*; (