State the law of conserv3t )c,m.r eig 9q-bv. bq8sxloation of electric charge.

  Is it possible for two negative charges to attract ea::lij7 ns5yd) /pilva5bz2 wqch other?

  Is it possible for a positive and a negative charge to abplk r-ac9g.7rpf,c l(ozh-8 ttract each other?

  A glass rod is rubbed wigoy6 b 9c2afq0- w;vreth a piece of silk. During the process the glass rod acq b 2vo-6e9g0rqy;w afcuires a positive charge and the silk

  A proton carries a

  The model of the atom yv+ u9z x4 l7bj7iv(ksshows a

  A neutral atom always ha. ssjgc01ka8d s

  An atom has more elefmj7w+7(u phkszw;hyo(gl ; +f(9b u hctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are :t+we , 2xhnuhhb2c*- (cufjtreferred to astuth-2f2*hh cnj: xc+b ,(wu e

  Materials in which the electrons are bound very loosely to the nuclei a(rf5do r-;i4ia p* f 571lmh8cy xv.hlid(pv cnd can move about freely within the material are refi51 l5h 8riayv;4*(.orpmp( ld- ccivf dx f7herred to as

  A negatively charged rod is brought near one end of h,lgwp ki(lg lo1bh5w*r4 .0 yan uncharged metal bar. The end of g ,14lk.l w5y*i(l bowphrg0h the metal bar farthest from the charged rod will be charged

  Sphere A carries a net 0n3f7-zzv qgk8b9v/azyuwv : positive charge, and sphere B is neutral. They are placed near each other on an insulated t9w-av08 zykfvzq b vugn 3:z/7able. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elecd, f7/u2fckq7 u4smoqtroscope positively?

  An originally neutral electroscope is briefly touched with a pouqut)u8* j fi7t0vb u4m9.h unsitively charged glass rod. The e9ui4 *u8q0bt.umn )7uvh jtu flectroscope

  An originally neutral electroscope 7dx vbtf3kaki/8dn f4s*//ss zbpj,vvco2 )8is grounded briefly while a positively charged glass rod is held near it. After the glass rod is rzsv)x8 ij/82f/k7 vd*pds3snovbk4a f/tc b ,emoved, the electroscope

  A positive object touches a neutral electroscoptbc8/*/ fuqbze, and the leaves separate. Then a negative obtb* u/8qfb /zcject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral mei p (1) by8ww33s7 mno9xpqlrftallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic f3 spq 1xwormbwl87ipn3)y9( ball rolls along the path followed by the first ball, strikes the first ball, and stops. The first ball rolls forward, but does not touch the negative object. At no time does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of tmhwus5d h go 4g8/;yejlz*cx1pk7n5/he Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fir efh :6swmupv7o7j5 ;qst charge is larger in magnitude than the second chargee6 p5 vm7oufws:q;h7j.

  Sphere A carries a net charge and sphere B im kyhsed05 l z67bh+*rs neutral. They are placed near each other on an insulated tab07 +hz6 dresl*ymkb 5hle. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the ch .)7gkk xg)kjxarges on both objects are doubled with no change in sepj .x k7)gg)xkkaration, the force between them

  Two charges are separated by a distance d and ex yi13rovw8nb4ai,gew;xvt7av8 0et 3ert mutual attractive forces of F on each other. If the charges are separated by a dist xeg8v31, eabtt o0r7;wviw n3a 8vyi4ance of d/3, what are the new mutual forces?

  Two charged objects 0+td nz:a7komattract each other with a force F. What happens to the force between+zd t0k7o:nma them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What hjn4gu+ sx- ao(appens to the magnitude of the force on the proton 4nsg o jau+x-(if a second electron is placed next to the first electron?

  An electron and a prz-r41ihbc+v ioton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the1i- ihr+ 4vbzc proton?

  An electron and a procn/ wt1jq7w 8 aaum dn1l:p*c;ton are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved8 *dtpc7;ljwum1wnq:1/a cn a 0.50 m closer to the proton?

  A point charge of +Q is placed t8isn59k 7m* (mzcw)8 rd*d(c*qwymt2qnvc n at the center of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0 N acts on the positive charge at the square's center. Now, identical charges of -Q are pl98vwm nz8i( rn*5t2 cq( s qwn*mcy )*tmkcdd7aced at the other three corners of the square. What is the magnitude of the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid /o,rctmd x wdiyuu* u8(b 6p7)of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts on it. What is the magnitude of the force that acts on the c/uuy(ux ob)*micrdt d7,wp8 6 enter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followin nd2 tik ;waxt.q4jth7a(-n d.g is not a vector?

  At twice the distance from a point cho6 t)/ew4fxtz3vmo i 9arge, the strength of the electric field

  Is it possible to have a zero elx llz24b/1n41egerz2sq 3 zwe idaq2gyy,*6 jectric field value between a negative and positive charge along the line joining the two charg ,zlwyz/ey32aqs 6414d1jreexn gl2zbqi 2g* es?

  Is it possible to have a zero electric field valuyqnd9u* ya 6n7e between two positive charges alonndqy7a u9ny6 *g the line joining the two charges?

  Electric field lines near psiti)u.oqf o1qj9 ive point charges

  The electric field sh**3d/6 wvvtl hf u+nwsown

  Can electric field lirx p+v,fj9 q;rbj07hhnes intersect in free space?

  A solid block of metal in electrost*pflba f su5;y;)vqc4atic equilibrium is placed in a uniform electric field. Give a) 5 spuyq ;lf4f;*acbv statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow *2sszsv4gtchyr4+( 97 suuzv metal sphere of equal diameters are each givent7+uu9 v*rv4s szg(4hz2s ycs the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum r58:- z 2oq iiq(g;nv9mpkvpjvests on a wooden table in a region where a uniform electric field isv85q-:;zvkqn p migo j9 pvi(2 directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in elect; h.9+qwxs6-cx exlalrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere th) u;0qphcgdnpfv9.3wr (xnd * at is grounded. As compared to the case without the hollow sp pp9cw30dvq;(dgr.fnu )nx *h here, the electric field at a point directly above the hollow sphere has

State three properties of conductors i9 mck .*pepp3in static equilibrium.

State Gauss's law.

  The charge carried by one electron is)jp-o hoha521u g7v np $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2.u9 uo76:s9u8afn2evvtrgn s 200 mC. How many more protons than electrons does thisa9st 7ufr:ug eo 62u9vsn2v8n piece of plastic have?

  What is the charge on 1 kg ops *xrp 47c i0bgf5mr f.z48-tgbtnj*f protons?

  An atomic nucleus has a cr/ jno 0-to*izharge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepalzz1 fi4+*(xmzzf5 s0*)gfhst a g l)arated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electrifa4*+ hasstg)1 z i5 zzz0f(x)gl l*mfc force between them?

  A 1.0-C charge is 15 me frj 9ln-ggbf7e03:u from a second charge, and the force between them is 1.0 N. What is thu0j9:3l-bee r7 fgnfge magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apa6hxel1;srv; yugy 6, yrt are they?

  The force between a j 4pko2i mh0 h0e/xq-f linx3*$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N force. /,f* +n ffwauxfkw7 m: If they are moved to a new separation of 8.0 cm, what is the electric force between: fmkanfu,/*w 7+ wffx them?

  Three identical point charges of 2.0 mC are placed on the x-axis. omi4c vh +)jo1jx x:pc(c n ,k(8p4qea The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. What are the magnitude and direction of the electrostatic fo ck(4m4cpi) vjn xj:cephq,o1 +a(8xorce which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 l8)fcs,d o c7rmC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark. What are to crcl7)8dfs, he magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the fo ,qv7 vvwkz/7hllowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge? 7hvq/vk 7wvz,

  A point charge of +Q is placed at the center of a square, and a yc+/rjw+bww;bmu fc3* 1b tq :second point charge of -Q is placejc3* u rb+ b+cwywm;/t: wqb1fd at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the positive charge at the center. What is the magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q lrl:zeq,fy.v (z;c4x3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charzz;v4qy.fle ( xl :c,rge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 mx ,+vunqf ;kn(); Q3 = 5.0 nC is at (0, 0). What is the direction u;qfkv,x( nn+of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral t3i9 91 f (kyq)n d*bqvnzrkj.criangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which z.qkc99i )3frb(n1 *jqvydknacts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 2d mx noyhi18gsh82 7rm. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be 8 dni2s8h1rgx2hmy7o zero?

  A +3.0-C charge is at the origin and a +9.0-C chancg0l6 1) n) adatzwt gaho19*rge is at x = 4.0 m. Where on the x-axis can agca*o1 wnadh1 ) g9ln0 )6ztta third charge be placed so the net force on it is zero?

  Charge +2q is placed at thp 5yw)kye e6bg5:lpj *e origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the fyjgk5: * )e6lebpypw 5orce on it is zero?

  A copper penny has a mass of 3.0 g. A tota a2keki08svw mu/bx6 7l of $4.0 \times 10^{12} \; electrons$ are transferred from one neutral penny to another. If the electrostatic force of attraction between the pennies is equal to the weight of a penny, what is the separation between them?

  An electron is held up against the force of gravia:6x .uh ,jlndf,:kelsl: 9jxty by the attraction of a fixed proton some distance above it. How far ab.afnjxk: shx :6elj:,,lud l9ove the electron is the proton?

  Two 0.20-g metal spheres aab( +uxpw iiq;)za9 0fre hung from a common point by nonconducting threads which are 30 cm lonq i( ;iw09p+x)afuabz g. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude ofn:)mu9 9xh 1 yq4khx sh(w2xhp the electric field ax94pkxuq hhm ysn2(xh :h9w1) t a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the elect)4)1 hd+ muit4netb8c.fx p/ mncn*ej ric field at a distance of 1.50 m from a 50.0-nC chargemd i nn)xpte ncemh.)+j4*tu1 f8b 4c/?

  A 5.0-C charge is 10 m from a small test charge. What s6rl0 dp welp-ekqavt70m5 rr6 86-gdis the magnitude of the electric field at the location of the test char6m -ee0 wd7lvg5l 66rpas8-p rd0 tqkrge?

  A 5.0-C charge is 10 m from a small test chargn snb cu0z;/o-rk(sj +e. What is the direction of the electric field+j-urcn;/o0 kn( ssbz?

  A 5.0-C charge is 10 m from a smalk1/wq ,5hiu25wj0cyy.o h ze kl test charge. What is the magnitude of the force experienced by a 1.0,ywezuhh ok5 .c0 w/jiqky2 15 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C an8 hkvi8pontg,g5 ycg:79 muxmpkt 53z+ gnv4/d are separated by a distance of 4.0 m. What is the electric 5 m8 ixv5uoyk+ g3gnv/tmtng 8pp9cg,z h:74kfield at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of2,oaf2om p:tktze0nz1y y, 0 n2im8 uu a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field auf1naz,y:u,tmi o 2ty08 onm e02zk 2pt the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mxu).bebizul mti/4: d*n ,6 tgark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what po4g/ibuxn*e:t6i tl. m bd,zu)int on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC areqtve;h/e 0 ;gq placed at x = 0 and x = 0.20 m. What is the magnitude of the electric fivt/h0 ; qe;egqeld at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The:ya v:vziy v.)gnau 82 last cornea:8yvu:ia y)nzg . v2vr is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is h:plbiii7x 2omcf o4x-v3h 9lt8u:)s1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, hxo3liuo9s vpt2:if8ih-7l4c :) xmb 1); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform j*- kf,o4ppj bq)ztm;electric field. What is the mag pjbzo;k)q4, ft* jmp-nitude of this electric field?

  A particle with a charge of 4.0198u1 flxfvv 1p. moys mC has a mass of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed in an electr a8h7m:6uhwo jkib3es xb ,,j6ic field of 6000 N/C pointing downward. What charge must be placed on the ball for it to b6 ix 7hkw3maub ho6jsj,e,b 8:e suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is pcb6ne hz(4j ,/eqd 6bblaced inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude 6jcbe4(b b/eq h6,dzn and direction of the electric field?

  A metal sphere of radius 10 cm c/r1+:p itl rfx y,taf5arries a charge of +2.0 mC. What is the magnitude of the electric ,1xffpt lri+ ra5/: tyfield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whaq *o6aqhltn 7*m;i 9mft is the electric field 6.0 cm from the cente;q **iqm anmfh 6lot79r of the sphere?