Class # 7 Physics

7/23/2019 Class # 7 Physics

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SECOND DAY OF CLASS

07-29-15Physics

Slides Prepared by : Johnny Pilartes Petroleum Engineer



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#2 IMAGE OF THE DAY



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TODAYS TOPICS A!E"

1 Sy$$%&'s

2 Physics %()M*%s'+*,*(

.h% is h* ,%i(/&*ci* / 3hysics4

S%()%+)s / L*(h6

M%ss6 %() Ti,*

Si(ic%( Fi'+*s



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PHYSICS AND MEAS8!EMENTS



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.HAT A!E THE MAIN GOALS OFPHYSICS4

Physics is % s'&*c &%s*) /( *3*+i,*(%$/&s*+%i/(s %() :'%(i%i* ,*%s'+*,*(s Th*,%i( /&*ci*s / 3hysics %+* / "

1 I)*(iy % $i,i*) (',&*+ / '()%,*(%$ $%;sh% /*+( (%'+%$ 3h*(/,*(%I? 8(i$ 1799i( F+%(c* h* s%()%+) / $*(h &*c%,* meter (m).

Since 1983, Meter is redened as the distancetraveled by light in vacuum during a time of 1/!! "!#$% second&



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STANDA!DS OF LENGTH6 MASS6 ANDTIME



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MASS: h* ,%i( SI '(i / ,%ss is Kilogram(Kg)6%() i is h* ,%ss / % s3*cic 3$%i(',-i+i)i',%$$/y cy$i()*+ @*3 % h* I(*+(%i/(%$ '+*%' /

;*ihs %() M*%s'+*s % SB+*s6 F+%(c*

TIME: mean solar day&Th* '()%,*(%$ '(i issecond (s);hich is 101012 / %

,*%( s/$%+ )%y N/;%)%ys s' is ! 1! ()1 ""*times the period of vibration of radiation from thecesium+1)) atom according to the ,tomic cloc-&



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STANDA!DS OF LENGTH6 MASS6 ANDTIME- DE!I?ED 8ANTITIES

L*(h6 M%ss6 Ti,* %+* fundamental.uantities ;hich is )iJ*+*( +/, derived.uantities such as area density speed&



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THI!D DAY OF CLASS

0K-0-15Physics




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# SENTENCE OF THE DAY

Th* s*c+* / ch%(* is / /c's %$$ / y/'+ *(*+y6 (/ /(hi( h* /$)6 &' /( &'i$)i( h* (*;

- S/c+%*s



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TODAYS TOPICS A!E"

1 Physics %()M*%s'+*,*(

.h% is h* ,%i(/&*ci* / 3hysics4

S%()%+)s / L*(h6M%ss6 %() Ti,*

Si(ic%( Fi'+*s

2 Dis3$%c*,*(6?*$/ciy %() S3**)



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DIMENSIONAL ANALYSIS


I( 3hysics6 h* ;/+) dimension h*3hysic%$ (%'+* / % :'%(iy

E%,3$* 11- A(%$ysis / %( E:'%i/( 12 A(%$ysis / % P/;*+ L%;


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CON?E!SION OF 8NITS


I is i,3/+%( / @(/; h* *:'i%$*('(is +/, )iJ*+*( ,*%s'+*,*(sys*,s F/+ i(s%(c*6 h* c/(*+si/(

%c/+ &*;**( SI S%()%+) I(*+(%i/(%$'(is %() 8S c's/,%+y '(is / $*(h%+* %s /$$/;s"

E%,3$* 1 Is H* S3**)i(4


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SIGNIFICANT FIG8!ES


.h*( ;* ,*%s'+* s/,*hi(6 h*+* ;i$$%$;%ys &* c*+%i( '(c*+%i(i*s6 %() h*y

c/,* +/, s**+%$ %c/+s6 s'ch %s h* :'%$iy/ %33%+%'s6 h* s@i$$ / h* *3*+i,*(6 %()h* (',&*+ / ,*%s'+*,*(s 3*+/+,*)Signifcant fgures is 's*) / *3+*ss h*

'(c*+%i(y / % ,*%s'+*,*(

E" !%)i's / % c/,3%c )is@ ;ih c,+%)i's6 Q-01 is h* '(c*+%i(y6 c, Q-01


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SIGNIFICANT FIG8!ES


R*+/s c%( /+ c%((/ &* si(ic%( '+*s

1- E" 00 %() 00075 h%* 1 %() 2si(ic%( '+*s +*s3*ci*$y

2- E" 1500 si(ic%( '+*ss1510 2 s< 15010 s


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HO. TO DETE!MINE THE SIGNIFICANTFIG8!ES IN P!OLEM SOL?ING4



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HO. TO DETE!MINE THE SIGNIFICANTFIG8!ES IN P!OLEM SOL?ING4



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CLASS #0K-05-15

Physics




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#7 SENTENCE OF THE DAY

O'+ +*%*s ;*%@(*ss $i*s i( ii( '3 Th* ,/s c*+%i(;%y / s'cc**) is %$;%ys / +y 's /(* ,/+* i,*

-Th/,%s A E)s/(



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TODAYS TOPICS A!E"

2 =i(*,%ic

-Dis3$%c*,*(6 ?*$/ciy %() S3**)



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=INEMATICS DISPLACEMENT6?ELOCITY AND SPEED

Th*+* %+* h+** y3*s / ,/i/( s'ch %sT+%(s$%i/(%$6 +/%i/(%$ %() i&+%i/(%$ .*%$;%ys @(/; h* ,/i/( / % 3%+ic$* i ;*

@(/; h* 3/sii/( / i i( s3%c* % %$$ i,*sE"%( c%+



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The displacement / % 3%+ic$* is h*ch%(* / h* 3%+ic$*s 3/sii/(

.h% is h* )iJ*+*(c* &*;**(displacement and distance travelled4



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CLASS #50K-0-15

Physics




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M/i%i/( is ;h% *s y/' s%+*) H%&i is ;h% @**3s y/'/i(

-8(@(/;(



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TODAYS TOPICS A!E"

2 =i(*,%ic

-Dis3$%c*,*(6 ?*$/ciy %() S3**)

A*+** *$/ciy %() s3**)6i(s%(%(*/'s *$/ciy %() s3**)



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Dis3$%c*,*( is % *c/+ :'%(iy %s ;*$$ %s*$/ciy %() %cc*$*+%i/( A Vector is %

3hysic%$ :'%(iy h% +*:'i+*s &/h )i+*ci/(,i('s %() 3$'s %() ,%(i')* H/;**+6 ascalar h%s ,%(i')* &' (/ )i+*ci/(

.* ;i$$ &* ;/+@i( i( his ch%3*+ ;ih % /(*-)i,*(si/(%$ ,/i/( /($y



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L//@i( % h* 3+*i/'s +%3h 3/sii/(-i,*6 ;* c%( s** h*ch%(* i( 3/sii/( *%si$y ch*c@ i /' Th* +%3h i*s %(i,3/+%( +%i/ average velocit !

Average velocitis h* 3%+ic$*s )is3$%c*,*( D )ii)*)&y h* i,* i(*+%$ D )'+i( ;hich h% )is3$%c*,*(/cc'++*)"



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Th* '(i / %*+%* s3**) is h* s%,* %*+%* *$/ciy ;hich,**+s*c H/;**+6 %*+%* s3**) h%s (/ )i+*ci/( %() )/(/ h%* %(y si(



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CLASS #50K-10-15

Physics




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O3i,is, is h* %ih h% $*%)s / %chi**,*( N/hi( c%(&* )/(* ;ih/' h/3* c/()*(c*

-H*$*( =*$$*+



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TODAYS TOPICS A!E"

2 =i(*,%ic

A*+** *$/ciy %() s3**)6i(s%(%(*/'s *$/ciy %() s3**)



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=INEMATICS21 C%$c'$%* h* ?%+i%&$* / M/i/(

Fi() h* )is3$%c*,*(6 %*+%* *$/ciy6 %()%*+%* s3**) / h* c%+ i( '+* &*$/; &*;**(

3/sii/(s A %()



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=INEMATICS INSTANTENEO8S ?ELOCITY AND SPEED

I(s*%) / @(/;i( h* %*+%* *$/ciy%$/( % (i* i,* i(*+%$6 ;h% %&/'h* *$/ciy / % 3%+ic$* % h* ,/,*(4L*s +*** i,* %() %$@ %&/' %(i()ii)'%$ i,* /+ i(s%(

L//@ % h* '+*& 6 i sh/;s 's i ;*)+%; )iJ*+*( $i(*s &*;**( 3/i(s ;ihi(h* i(*+%$ / A-6 ;* ;i$$ * / %%(*( $i(* / h* c'+* /($y /(* 3/i(

/'chi(- The slope o" thus tangentline is the velocit o" the car at thatpoint and moment #hich is theinstantaneous velocity!



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=INEMATICS INSTANTENEO8S?ELOCITY AND SPEED

Th* instantaneous speed is h* ,%(i')* /is instantaneous velocity& ,verage speed andinstantaneous speed have no direction& F/+*%,3$*6 % 3%+ic$* ;ih %( i(s%(%(*/'s

*$/ciy / Q25,s %() %(/h*+ 3%+ic$* ;ihSlides Prepared by : Johnny Pilartes Petroleum Engineer


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CLASS #0K-12-15

Physics




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I y/' c%( i,%* i6 y/' c%( %chi** i I y/' c%( )+*%, i6y/' c%( &*c/,* i

-.i$$i%, A+h'+ .%+)



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=INEMATICS CONSTANT?ELOCITY

22 A 3%+ic$* ,/*s %$/( h* -%is Is c//+)i(%* %+i*s;ih i,* %cc/+)i( / *3+*ssi/( U-Q22 6 ;h*+* is i(

,**+ %() is i( s*c/()s Th* 3/sii/(-i,* +%3h /+ his,/i/( is sh/;( &*$/; N/* h% h* 3%+ic$* ,/*s i( h*(*%i* )i+*ci/( /+ h* +s s*c/() / ,/i/(6 is % h* +*s% h* ,/,*( U1 s6 %() ,/*s i( h* 3/sii* )i+*ci/( /+V1 s % D**+,i(* h* )is3$%c*,*( / h* 3%+ic$* i( h* i,*i(*+%$s U0 / U1 s / U s



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Th* 3%+ic$* c%+ ,/i( is +%*$i( % % c/(s%(*$/ciy6 h* s$/3* )/*s (/ ch%(*6 i +*,%i(s h* s%,*

I h* *$/ciy / % 3%+ic$* is c/(s%(6 is i(s%(%(*/'s*$/ciy is *:'%$ / h* %*+%* *$/ciy /*+ h* i(*+%$

I % >i6 iU0 s h%( """



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2 M/)*$i( % !'((*+ %s % 3%+ic$* A sci*(isis s')yi( h* &i/,*ch%(ics / h* h',%( &/)ySh* )**+,i(*s h* *$/ciy / %( *3*+i,*(%$Slides Prepared by : Johnny Pilartes Petroleum Engineer


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CLASS #70K-1-15

Physics




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Eih*+ y/' +'( h* )%y /+ h* )%y +'(s y/'

-Wi, !/h(



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=INEMATICS ACCELE!ATION

.h*( h* 3%+ic$*s *$/ciy is ch%(i( ;ih

h* i,*6 ;* s%y i is %cc*$*+%i( Th*Slides Prepared by : Johnny Pilartes Petroleum Engineer


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.h*( h* ch%(* / *$/ciy is /cc'+i( i( %+*%$$y sh/+ 3*+i/) / i,*6 ;* %+* )*%$i(;ih % instantaneous acceleration!



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Th* *$/ciy / % 3%+ic$* ,/i( %$/( h* %is %+i*s%cc/+)i( / h* *3+*ssi/( ?U0 -526 ;h*+* ? isi( ,**+ 3*+ s*c/() %() is i( s*c/()s % Fi() h*%*+%* %cc*$*+%i/( i( h* i,* i(*+%$ U0 / U20s & D**+,i(* h* %cc*$*+%i/( % U20 s



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=INEMATICS CONSTANTACCELE!ATION

.h*( ;* s%y h* %cc*$*+%i/( is c/(s%(6 h* %*+%*

%cc*$*+%i/( /*+ %(y i,* i(*+%$ is *:'%$ / h*i(s%(%(*/'s %cc*$*+%i/( % % %(y i,* i(*+%$ .h*(h* *$/ciy % % c/(s%( %cc*$*+%i/( %+i*s $i(*%+$y ;ihi,*6 h* average velocit i( %(y i,* is h* %+ih,*ic,*%( / h* i(i%$ %() (%$ *$/ciy/($y whenacceleration is constant



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I is i,3/+%( / @(/; h% ;h*( h* acceleration of a article

is !ero6 is *$/ciy is c/(s%( %() is 3/sii/( ch%(*s $i(*%+$y;ih i,*6 %() h* ,/)*$ +*)'c*s +/, under constantacceleration to under constant velocit $so in this case useonl e%uations valid "or constant velocit& Th* +%3hs %()*:'%i/(s &*$/; %+* /($y /+ % 3%+ic$* '()*+ c/(s% %cc*$*+%i/(



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C%++i*+ L%()i(

A * $%()s /( %( %i+c+% c%++i*+ % % s3**) / 10 ,ih ,s % .h% is is %cc*$*+%i/( %ss',*) c/(s%( i is/3s i( 20 s )'* / %( %++*si( c%&$* h% s(%s h* * %()&+i(s i / % s/34 & I h* * /'ch*s )/;( % 3/sii/(

iU06 ;h% is is (%$ 3/sii/(4



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1 C%++i*+ L%()i(

A * $%()s /( %( %i+c+% c%++i*+ % % s3**) / 10 ,ih ,s % .h% is is %cc*$*+%i/( %ss',*) c/(s%( i is/3s i( 20 s )'* / %( %++*si( c%&$* h% s(%s h* * %()&+i(s i / % s/34 & I h* * /'ch*s )/;( % 3/sii/(

iU06 ;h% is is (%$ 3/sii/(4



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=INEMATICS MOTION IN T.ODIMENSION



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C//+)i(%* sys*,s

I( ;/-)i,*(si/(s6 ;* 's* C%+*si%( c//+)i(%*s

;hich is %$s/ &* c%$$*) rectangular coordinates&


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C//+)i(%* sys*,s

S/,*i,*s i ;i$$ &* (**)*) / +*3+*s*( %3/i( i( % 3$%(* &y is plane polarcoordinates 0r)


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2 Th* C%+*si%( c//+)i(%*s / % 3/i( i(h* y 3$%(* %+* 6yU -506 -250 , %s

sh/;( i( h* '+* &*$/; Fi() h* 3/$%+c//+)i(%*s / his 3/i(


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?*c/+ %() Sc%$%+ '%(ii*s


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Some Vector 'roperties!

(! E%ualit o" T#o Vectors";/ *c/+s %+* *:'%$ i h*yh%* h* s%,* ,%(i')* %()i h*y 3/i( i( h* s%,*)i+*ci/( Th* +%3h &*$/;*c/+s %+* *:'%$ **( h/'hh*y )/ (/ h%* h* s%,*

s%+i( 3/i(

)! Adding Vectors *graphical method" / s',

*c/+6 +s )+%; *c/+ A /(+%3h 3%3*+6 ;ih is ,%(i')*+*3+*s*(*) &y is $*(h sc%$*6%() h*( )+%; *c/+ + / h*s%,* sc%$*6 ;ih is %i$ s%+i(+/, h* i3 / A!


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)! Adding Vectors * graphical method" / s',

*c/+6 +s )+%; *c/+ A /( +%3h 3%3*+6 ;ih is,%(i')* +*3+*s*(*) &y is $*(h sc%$*6 %() h*( )+%;*c/+ + / h* s%,* sc%$*6 ;ih is %i$ s%+i( +/, h*i3 / A!


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,omponents o" a Vector and -nit Vector

Th* +%3hic%$ ,*h/) / %))i( *c/+s is (/

+*c/,,*()*) /+ h+** )i,*(si/(%$ 3+/&$*, I is &**+/ 's* % ,*h/) h% %33$i*s 3+/*ci/(s / *c/+s %$/(c//+)i(%*s %*s Th*s* 3+/*ci/(s %+* @(/;( %srectangular components/ *c/+s


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.* 's* h* sy,&/$s / +*3+*s*( '(i *c/+s

3/i(i( i( h* 3/sii*y and 2 )i+*ci/(s6%() h*y %+* 3*+3*()ic'$%+


-nit Vectors

?*c/+ :'%(ii*s %+* 's'%$$y *3+*ss*) i( '(i *c/+s Aunit vector is % )i,*(si/($*ss *c/+ h%i( %,%(i')* / *%c$y 1 6 %() ;* 's* i /($y / s3*ciy %i*( )i+*ci/( i( s3%c*


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