8/4/2019 Potencia ,Aparatos de Medida ,Fuerza Magnetica ,Solenoide ,Potencia Electrica

1/7

YZS

$ZS^W__`WZUSbS^STWW_`U[ZWU`SVSSaZS TS`W S]aW \^[\[^U[ZSaZb[ SW U[Z_`SZ`WWSSU[^^WZ`WWZWU^Ua`[S\[`WZUSV_\SVS\[^S^W__ WZUSWbS[^

VWSaWZ`S]a\^[\[_U[ZW__[ZU[^^WU`S_SaWZ`S\[^]aWW_V^WU`SWZ`W\^[\[^U[ZSSV_ZaW\[^]aW\W^SZWUWU[Z_`SZ`W\W^SZWUWU[Z_`SZ`W\[^]aWWSaWZ`[VW_WU[\WZ_SU[ZSV_ZaUZVW{[[ {_[[ {_[[{ { W`W^ZWSbW^VSV{[XS_WVSV{VW

S__YaWZ`W_\^[\[_U[ZW_S\[`WZUSV_\SVSWZaZ^W__`[^_WVWTWS[_`\W_U[]aW_VW[_WWU`^[ZW_VWU[ZVaUUZU[Z[_`[[_VWS^WVU^_`SZSZaZSTS`W^S^WS_WV_\SWZW^YSWU`^US UaSZV[U^UaSZ US^YS_VWTV[S]aW`WZWaZS^W__`WZUSZ`W^ZSSWZW^YSWU`^US_W`^SZ_\[^`SS`WZ_[ZW_ WWbSVS_ \S^S U[Z`^S ^W_`S S_ \W^VVS_\[^WXWU`[[aW{ { {{ {

S^SW^W__`[^[_`^SV[WZSXYa^SVW`W^ZWS_\^[\[_U[ZW_U[^^WU`S_ S \[`WZUS V_\SVS \[^ S ^W__`WZUS W_YaSSS\[`WZUSST_[^TVS\[^WSYaS_WUSTSS^W__`WZUS\[^[`^SVWS[^bS[^S\[`WZUSV_\SVSSaWZ`S_WVbVWS^W__`WZUSWZV[_\S^`W_YaSW__WS_U[ZWU`SWZ\S^SW[S\[`WZUSSaWZ`S{`[VS_

{{

{_[[

{[_X[U[_VZ`U[__WU[[USZWZ_W^WVW_S^^[SZaZS\[`WZUSVWSUaWS\[`WZUS]aWWZ]aWVW_S^^[S^SZ[_X[U[___WU[ZWU`S^SZWZ\S^SW[ZST[_US_[_

[_ X[U[__WU[ZWU`S^[Z S S_S XaWZ`WVWb[`SW{ { {{ {% aSZV[`^W_^W__`WZUS_VZ`US__WU[ZWU`SZWZ\S^SW[U[ZaZSTS`W SS\[`WZUS`[`SV_\SVS\[^W[_W_VW\[_`W^[^

WZ`W_WU[ZWU`SZW_S__S_^W__`WZUS_WZ_W^WU[ZS_STS`W^SS\[`WZUS`[`SV_\SVSWZ_W^{ { {{% {^W_^W__`WZUS_VZ`US_W_`Z U[ZWU SVS_U[[ _WaW_`^S WZ S XYa^SS\[`WZUSV_\SVSW_{SWZ{SWZ{SWZ{_YaSWZ{ZSWZZS_YaWZ`WXYa^SUSVS^W__`WZUS\aWVWV_\S^S_`SaZS\[`WZUSS

VW%_Z]aWS^_WSWSS\[`WZUS]aW\aWVWV_\S^`[V[WU^Ua`[{{%{{{%W`WZW`^W_X[U[_YaSW_V_\aW_`[__WYZWVSY^SS[_`^SV[S\[`WZUSS]aW\aW

VW _[\[ `S USVS X[U[ W_ VW W`W^ZW W[b[`SWWZ{]aW\[VW[_S\US^WZ`^W\S^SSZ`WZW^WZXaZU[ZSWZ`[[_X[U[__USVSX[U[`WZWaZS^W__`WZUS{

{

{

{

{

8/4/2019 Potencia ,Aparatos de Medida ,Fuerza Magnetica ,Solenoide ,Potencia Electrica

2/7

YZS

ZWU^Ua`[VWSXYa^SaX^SUUZWZ{VWS\[`WZUSWZ`^WYSVS\[^STS`W^SW_V_\SVS\[^

{

{

{

{{S_^W__`WZUS_V_\SZ% ^W_\WU`bSWZ`W SW S^W__`WZUS_ {

{

{

{%

{WSWS_\^[\[_U[ZW_U[^^WU`S_ZTaWZS\W^W`^[VWTW`WZW^aZS^W__`WZUS \W]aWS U[\S^SVS U[Z S_ ^W__`WZUS_VWU^Ua`[V[ZVW_WbSSa`S^ZTaWZb[`W`^[VWTW`WZW^aZS^W__`WZUSaU[_Y^SZVW]aWS_^W__`WZUS_VWU^Ua`[V[ZVW_WbSSa`S^S\W^W`^[_WZ_`SSWZ\S^SW[U[ZW

WWWZ`[S`^Sb_VWUaS_WVW_WSWV^SU[^^WZ`W{ { {[{[ {ZYaZS %SXYa^SaW_`^S\S^`WVWaZU^Ua`[WU`^U[b[`W ^[VW^W__`WZUSZ`W^ZS^WY_`^SWS\W^W`^[VW^W__`WZUSZ`W^ZS^WY_`^SW`W ZW S\^[SVSWZ`WSSYZ`aVWZ{VWS^W__`WZUS

{%{{{{ Z W _WYWZ`[ VW U^Ua`[[_ ^SV[ S^W__`WZUSZ`W^ZSVWS\W^W`^[W_VWb[`W`^[W_VW`W^ZWWbS[^VWS^W__`WZUSWZ{_SWU`a^SVWb[`W`^[W_SVWS\W^W`^[W_

{{{{{%SW S\^[SVSWZ`W S ^W__ WZUS WZ

{]aWVWTW`WZW^aZb[`W`^[\S^S]aWSU[ZWU`S^[S`^Sb_VWS^W__`WZUSVW^WY_`^WaZSVXW^WZUSVW\[`WZUS]aW_WSVWbS[^]aW^WY_`^S^SaZb[`W`^[VWS{{{{{%%

ZWU^Ua`[[_`^SV[_WVWaZSVXW^WZUSVW\[`WZUSVWWZS^W__`WZUSVWW`W^ZWS^W__`WZUSZ`W^ZSVWb[`W`^[{WZ[{

{

{

{

{

WVW_WSWV^U[ZaZS\W^W`^[VW^W__`WZUS^SU[^^WZ`WWZWU^Ua`[[_`^SV[WW^^[^WZSWVUZVWSU[^^WZ`WW_aW_S\^[SVSWZ`W{S^WSUZ^{{{{{%

W^^[^VWS\W^W`^[[_`^SV[WZSXYa^SW_VWW`W^ZWS^W__`WZUSZ`W^ZSVWS\W^W`^[{WZ{

{%

{

{

{

8/4/2019 Potencia ,Aparatos de Medida ,Fuerza Magnetica ,Solenoide ,Potencia Electrica

3/7

YZS

%S^SWV^SU[^^WZ`WWZWU^Ua`[[_`^SV[_WU[ZWU`SaZS\W^W`^[VW^W__`WZUSZ]a\[^UWZ`SWbS^SSZ`WZ_VSVVWU[^^WZ`WS\^[{VWTV[SS\W^W`^[{{{

{{S^SWV SVXW^WZUSVW\[`WZUSWZ`^W[_\aZ`[_STVWU^Ua`[[_`^SV[WZSXYa^S_WU[ZWU`SaZb[ W`^[WZ`^WVU[_\aZ`[_U[[_WZVUSWZSXYa^SS^W__`WZUS Z`W^ZS VW b[ W`^[ W_ WZ ]a \[^UWZ`SW bS^S SVXW WZUSVW\[`WZUSWZ`^WSTSUSa_SVWb[`W`^[

{ { {{ {

ZWU^Ua`[VWSXYa^SS_TS`W^S_`WZWZ^W__`WZUS_Z`W^ZS_Z_YZXUSZ`W_SUaWS WU`a^SVWb[`W`^[WZVWS\W^W`^[WZ{

{

{

{

{

[Z^WXW^WZUSS[_\[[_SYZ`U[_VWaZZVW`W^ZWS_\^[\[_U[ZW_U[^^WU`S_ W VWZ[ZS \[[ Z[^`W VW Z S ]aWS\aZ`SSZ[^`WYW[Y^XU[VWS`W^^S[[_SYZ`U[_VWYaSZ[T^W_WS`^SWZU[ZZ[T^W_VXW^WZ`W__W^W\WWZW\W WZ`[VWW^_`WVW_aZSWbVWZUSVWSW_`WZUSVW[Z[\[[_SYZ`U[_

{[VS_ { {{_[[ {ZZYaZSWSWS_\^[\[_U[ZW_U[^^WU`S_^W_\WU`[SSYZW`_[VWS`W^^S\[[Z[^`WSYZ`U[VWS`W^^SW_`UW^USVWSTSSVWaV_[ZSZSV{W\[[_a^SYZ`U[WZW^^SVWSZ`^`VS{

ZYa[]aWX[^SSV^WUUZZ[^`W_a^SYZ`U[U[ZSV^WUUZZ[^`W_a^YW[Y^XU[_WVWZ[ZSVWUZSUZSYZ`USSYZW`_[VWS`W^^S_WVWTWSS`W^SSYZ`U[]aW_WWZUaWZ`^SWZWZ`W^[^VWS`W^^S{ZYaZS {_[[ {_[[{_[[ {[Z^WXW^WZUSSW\W^WZ`[VWW^_`WVZV]aW W bS[ VW bW^VSV VW S_ _YaWZ`W_\^[\[_U[ZW_ [ZW WZWbVWZUS]aW [_ US\[_SYZ`U[__[Z\^[VaUV[_\[^US\[_WU`^U[_[\^aWTS]aWWUS\[SYZ`U[\^[VaUV[W_V^WU`SWZ`W\^[\[^U[ZSSSZ`WZ_VSVVWU[^^WZ`WWU`^USWZWU[ZVaU`[^W^`WU[ZUa^]aWWUS\[SYZ`U[\^[VaUV[`WZWS_SV^WUUZ]aWSU[^^WZ`WWU`^US{ { {{ {

W_\WU`[SW\W^WZ`[VW[W^_`WV_WSWSbW^SUVSV{[XS_WVSV{VWS__YaWZ`W_\^[\[_U[ZW_[ZWWZWbVWZUS]aWS_U[^^WZ`W_WU`^US__[Z\^[VaUVS_\[^SSUUZVWSUUZVWUS\[_WU`^U[__[T^W[_U[ZVaU`[^W_W^`W U[ZUa^]aWS_ U[^^WZ`W_WU`^US_SYaS]aW[_SZW_SZXW_`SZUS\[SYZ`U[[\^aWTS]aW[_US\[_SYZ`U[__[Z\^[VaUV[_\[^US\[_WU`^U[_{ { {{ { %W`W^ZWSbW^VSV{[XS_WVSV{VWS__YaWZ`W_\^[\[_U[ZW_^WXW^VS_SW\W^WZ`[W^_`WV[ZWWZ WbVWZUS]aWS_ XaWZ`W_VWUS\[_SYZ`U[__[Z[_SZW_S_U[^^WZ`W_WU`^US_[ZWWZWbVWZUS]aWaZSU[^^WZ`WWU`^USW_US\SVW\^[VaU^WXWU`[_SYZ`U[_

4

S

T

4

T

S

8/4/2019 Potencia ,Aparatos de Medida ,Fuerza Magnetica ,Solenoide ,Potencia Electrica

4/7

YZS

[ZWWZWbVWZUS]aWaZUS\[SYZ`U[\^[VaUWaZSU[^^WZ`WWU`^US{ { {{ {[T^WSXaW^SSYZ`US_[T^WaZS\S^`UaSUS^YSVSW_U[^^WU`[

[VS\S^`UaSUS^YSVSWZ[bWZ`[VWZ`^[VWaZUS\[SYZ`U[W\W^WZ`SaZSXaW^SSYZ`US_WZ`V[VWSXaW^SSYZ`USW_ZVW\WZVWZ`WVW_YZ[VWSUS^YSWZ[bWZ`[SXaW^SSYZ`USW_\^[\[^U[ZSSZYa[X[^SV[WZ`^WSV^WUUZVWSbW[UVSVWUS\[SYZ`U[{ { {{ { [Z_VW^W aZ SST^W ^WU`[ a S^Y[]aWU[ZUVWU[ZWWWVW__`WS[_`^SV[\[^WUaSU^UaSaZSU[^^WZ`WUaSV^WUUZW_WZ`^SZV[S\SZ[VW\S\WZ aZ Z_`SZ`W VSV[ aZ WWU ^Z W_` WZ W\aZ`[{U[bZV[_WU[ZbW[UVSV

'

%_SXaW^SSYZ`USWZ]aWSU`S_[T^WWWWU`^ZWZW_WZ_`SZ`WW_W3[3

{%3

{%3

{3%3

{%3%

{3%3% %US\[SYZ`U[SU`SWZS^WYZVW`SVS\[^W^WU`ZYa[SUWYVW_VWWUWZ`^[_WV_\S^SaZWWU ^ZU[ZaZS^S\VWVWU_W`W^ZW\[^]aW_WYWZ`[ VW S ^WYZ _SW W WWU`^Z W Y{

{TU

{UV

{VW

{Y

{ST

SXYa^SaW_`^SaZWWU`^Z[bZV[_WU[Z^S\VWb_S[S^Y[VWSV^WUUZ VW WW \WZW`^SZV[ WZ aZS ^WYZV[ZVW W_`W aZ US\[ SYZ`U[ aZX[^W

V^YV[\W^\WZVUaS^WZ`WWZ`^SZV[S\S\WSS_SVWWWU`^ZW_3Y_aUS^YS W_ 33 W`W^ZW W [bS[^]aW\aWVW`WZW^WUS\[SYZ`U[WZ

3VWSZW^S]aWWWWU`^ZSYS\SU`[WZS\SZ`SS{

{

{

{%

{

%

ZS\S^`UaSVWS_SYUS^YS]aW^WSSaZ\S_S\[^[_\aZ`[_VW\SZ[U[[_WaW_`^SWZSXYa^SWUSa_SZ`WW_aZUS\[SYZ`U[VWSYZ`aV VW`W^ZW WZ{ S_ U[[^VWZSVS_VW UWZ`^[ VW S `^SWU`[^S [Z_VW^WZ_YZXUSZ`WS_XaW^S_Y^Sb`SU[ZSW_{{

{3{{3{{3{

{3{% Z S ^WYZ [_`^SVS VW SZU[ U

W_`W aZ US\[ SYZ`U[ aZX[^W

\W^\WZVUaS^S\SZ[VW\S\WaZS\S^`UaSVWS_SYVWUS^YS[bZV[_WU[Z

aZSbW[UVSV '

_ZY^W_SSW_`S^WYZ\[^W\aZ`[aSZV[_SW\[^W\aZ`[_abW[UVSVSUWaZZYa[VWU[ZWWW

SUaW S SYZ aVVW US\[ SYZ`U[

WZW_S_{

{

{

{

{

_

{

{

U \SZ`SS

W;

'

{

{

{

U

[

X

U

S

T

VW

X

Y

8/4/2019 Potencia ,Aparatos de Medida ,Fuerza Magnetica ,Solenoide ,Potencia Electrica

5/7

YZS

ZS \S^ UaS SXS VW US^YS ] S_S3 Y ^WU[^^W aZS `^SWU`[^S VW ^SV[ WZ aZ US\[ SYZ`U[ VW SUaW S\^[SVSWZ`W S WZW^YS UZ`USVWS\S^`UaSSXSWZW]3W3{ { {{ {

ZS\S^`UaSVWUS^YS]S_SZUSWZ`WWZ^W\[_[SUWW^SWVSZ`WaZSVXW^WZUSVW\[`WZUSVWU[Z`ZaSUZZY^W_SWZaZS[ZSV[ZVWW_`WaZUS\[SYZ`U[aZX[^WVWSYZ`aVVW_U^TWaZS `^SWU`[ S U^UaS^VW^SV[ SUaWWU[UWZ`W]WZY\S^SS\S^`UaS{ { {{ { ZSXYa^S_WaW_`^SS_`^SWU`[^S_VW_U^`S_\[^\S^`UaS_VWYaSS_SWYaSUS^YS [bZV[_W WZ WV[ VW aZ US\[ SYZ`U[[[YZW[W`W^ZWSbW^VSV{[XS_WVSV{VWS__YaWZ`W_\^[\[_U[ZW_`^STS[WU[WZaZSbaW`S\[^SXaW^SSYZ`US_[T^WS\S^`UaS{W_S[^]aWWWU[_[T^WS\S^`UaS{SWZW^YSUZ`USVWS\S^`UaS{W_S[^]aWSVWS\S^`UaS{SbW[UVSVSZYaS^VWS\S^`UaS{W_S[^]aWSVWS\S^`UaS{

{{

{

{

{

%ZWST[^S`[^[VW_USVWSaZV_\[_`b[ W W [ZW_ \[_`b[_ ]aW _WVW_\S

SZU[ZaZSbW[UVSV ;

aWWbSVS[ZW\^[\_`[VWWV^WbS[^VWVa[VWW_`SbW[UVSV_WS\UWZS[ZSV[ZVW_WVW_\S

SZ[_[ZW_[_US\[_WU`^U[

SYZ`U[

ZVUSV[__[_Va[_VWW_`[_US\[__[Z3_W[T_W^bS]aW[_[ZW_S`^SbW_SZW_`S[ZSWZ

ZWS^WU`SUSUaS^WbS[^VWVa[VW ;

WZ_

{{{

{{%

US\[WU`^U[aZX[^WVWaZU[ZVWZ_SV[^\SZ[W_\W^\WZVUaS^SaZUS\[SY

Z`U[aZX[^WVW 2%

U[[_WaW_`^SWZSXYa^SS_W\S^SUZWZ`^WS_\SUS_W_UaZWWU`^ZS`^SbW_SWW_\S

U[WZ`^WS_\SUS_U[ZbW[UVSV ' 2 8

USUaWW b[ SW WZb[`[_ WZ`^WYSV[\[ SXaWZ`W{

{

{{%

{ZSST^W VWVW [ZY aV U[ZVaUWaZS U[^ WZ`W VW WZ \^W_WZUS VW aZUS\[ SYZ`U[ VW W\W WZ`S aZSXaW^S VW W`W^ZW W _WZ[ VW ZYa[WZ`^WWSST^WWUS\[SYZ`U[{ { {{ {

% SW_\^S U[ZVaU [^S UaSV^SVS VW UVWSV[`WZWaZS^W__`WZUSVWW_`\S^USWZ`WZW^_[WZaZUS\[SYZ`U[aZX[^WVWU[[ZaW_`^S S XYa^SUW^^S^ W Z`W^^a\`[ Ua _W^ SXaW^S WZ{_[T^WW`^S[VWU^Ua`[{3

{3

{

{

{

[T^WSXaW^SSYZ`US]aWSU`SWZaZU[ZVaU`[^^WU`ZW[\[^W]aWU^UaSU[^^WZ`WZV]aW_S_\^[\[_U[ZW__[ZbW^VSVW^S_{[XS_S_{ S XaW^SSYZ US _W\^W SU`S \W^\WZVUaS^SUS\[SU[ZVaU`[^

U

U

8/4/2019 Potencia ,Aparatos de Medida ,Fuerza Magnetica ,Solenoide ,Potencia Electrica

6/7

YZS

[T^WaZU[ZVaU`[^\S^SW[SUS\[SYZ`U[Z[SU`SSXaW^SSYZ`US[bS[^VWSXaW^SSYZ`US_W\^[VaUWUaSZV[WZYa[]aWX[^SZWU[ZVaU`[^WUS\[W_{ { {{ {

S XYa^S aW_ ^S W SST^W WZV[ZVW_[Z\S^SW[_SWW\[^W]aWU^UaSSU[^^WZ`W_WWZUaWZ`^S ZW^_[ VWZ`^[ VW aZ US\[ SYZ`U[

W`W^ZWWZ{SXaW^SSYZ`US_[T^WWSST^W{3

{33

{

{33

{3

% WTV[SaZ US\[SYZ`U[ W`W^Z[ WSST^W VW S XYa^S W\W WZ`S aZS XaW^SVW%aW_SSYZ`aVWZ{VWSXaW^SSYZ`US_[T^WW_WYWZ`[^WU`[VWVW[ZY`aV

{

{

{%

{

{

%W_\WU`[SV[_SST^W_U[ZVaU`[^W_\S^SW[_aS^Y[_]aWU[ZVaUWZU[^^WZ`WWU

`^USZV]aW]aW\^[\[_U[ZW__[ZU[^^WU`S_ aSZV[ [_ SST^W_ U[ZVaUWZ U[^^WZ`W_VZ`US_W_`Z_W\S^SV[_\[^SSYZ`aVVWSXaW^S\[^aZVSVVW[ZY`aVWZ`^WW[_W_WZ`[ZUW_SU[^^WZ`WWZUSVSSST^W_WVWXZWU[[ aSZV[ [_ SST^W_ U[ZVaUWZ U[^^WZ`W_WZ_WZ`V[[\aW_`[_SXaW^SWZ`^WW[_W_VW^W\a_Z

aSZV[ _W Va\US S V_ SZUS WZ`^W [_SST^W_SXaW^SSYZ`USWZ`^WW[__W^WVaUWSSUaS^`S\S^`W{[ {[ {[{ {^W_[_U[ZVaU`[^W_aS^Y[_^WU`[_\S^SW[_ \W^\WZVUaS^W_ S\SZ[VW\S\W

\S_SZ \[^ [_ `^W_ b `UW_ VW aZ ` ZYa[W]a W^[VWSV[UbW XYa^S{ USVS[`WZWaZSU[^ WZ`WVWUSUaWWVa[ VW SXaW^S\[^aZVSVVW [ZY`aV WZ{]aW_WWW^UW_[T^WW[_a\W^[^VWTV[S[_US\[_SYZ`U[_\^[VaUV[_\[^S_U[^^WZ`W_WZ[_[`^[_V[_[_{

{

{%

{{

W W^ZW S ZVaUUZ SYZ US WZ W\aZ`[ [Z_VW^W USTW_ VW Y^SZ [ZY aVWZ{

{

{

{

{

{

ZS XYa^S_WaW_`^SZ V[_U[ZVaU [^W_aS^Y[_]aW`^SZ_\[^`SZU[^^WZ`W]aV_`SZUSVWU[ZVaU`[^WUS\[SYZ`U[W_Za[{%U

{U{U

{U

{%U[_U[ZVaU`[^W_\S^SW[_VWY^SZ[ZY`aV_W\S^SV[_WbSZU[^^WZ`W_VWUSVSaZ[\W^[WZ_WZ`V[U[Z`^S^[SWSZ`WZ_VSV VW US\[ SYZ U[ WZ { WZ aZ\aZ`[]aWV_`SVWUSVSU[ZVaU`[^

U U

%U

8/4/2019 Potencia ,Aparatos de Medida ,Fuerza Magnetica ,Solenoide ,Potencia Electrica

7/7

YZS

{ { {

{ { %ZSXYa^S_W^W\^W_WZ`SSXYa^S`^SZ_bW^_SVWV[_USTW_S^Y[_\S^SW[_WZ`^W_\W^\WZVUaS^W_S\SZ[[^USVSU[ZVaU`[^U^UaSaZSU[^^WZ`W\W^[WZ_WZ`V[_

[\aW_`[_SUaWWbWU`[^US\[SYZ`U[WZW\aZ`[ {WZ3{%

{%

{3%

{3%

{

%WU[Z_`^aWaZ_[WZ[VWU[ZSST^WVWVWVW`^[\S^S]aW\[^U^UaWW`W^ZW S SYZ`aV VW US\[ SYZ U[WZ{WZWUWZ`^[VW_[WZ[VW{ { {{ { %W`W^ZWWVW`^[WZVWaZSST^WVWU[T^WU[ZW]aW_WU[Z_`^aWaZ_[WZ[VW\S^S]aWUaSZV[\[^U^UaWaZSU[^^WZ`WVWWUS\[SYZ`U[WZ_aUWZ`^[_WSVW{ { {%{% {% [T^W aZ UZV^[VW US^`Z _W U[Z_` aWaZ_[WZ[VW VW % U VW [ZY aV W UaSYWZW^SaZUS\[SYZ`U[WZ_aZ`W^[^UaSZV[ _W SUW U^UaS^ a_SZV[ W_[ SST^W _W U[Z_`^aW^SaZ _[WZ[VWVWUVW[ZY`aV_`W`WZV^SW_\^S__]aWUSUaWWZ{ { {

{ {

3

{

{