State the law of conservation of electric chargx6452aj w8 *;7l elknj:f m rffkzf+lge.

  Is it possible for two negativ2f 1;mbod l h:bd95coje charges to attract each other?

  Is it possible for a positive and a negative chb5 um2p1oqqfwgf e* -9arge to attract each other?

  A glass rod is rubbed with a piece of silk. During the pr i, 05ro01h 9mnc,qy /tsi g7utqilf.tocess the glass rod acquires a positive tsqioi1yftc,/nr 07h ,5iml0t .9gqucharge and the silk

  A proton carries a

  The model of the atom )q se2h+ + s2h-vo7cekj,whhej1d 7x pshows a

  A neutral atom always ha6kpn (w;pdm 8; scu6enpmt5v4 s

  An atom has more electrons than l)cfwggab:x56d duknm. u9 j r *67 r1*bqzfj3protons. The atom is

  Materials in which the electrons are bound very tbgw tl8( r7r/ 9zt4e+,8frby bedab l:ightly to the nuclei are referred trlf : trd(l zwgra4bb 78,e 8+bbyt9/eo as

  Materials in which the electrons aek(m9-)tsj k* 7 diyln g3i;zsre bound very loosely to the nuclei and can move about freely within the material are referred to as(3kisid9mzykg7;tsnl* ) j e -

  A negatively charged rod is brought near one end of an ui(huw8i(3j h p:oohy(ncharged metal bar. The end of the metal bar farthest from wiu3 ((:h (jooiyhp 8hthe charged rod will be charged

  Sphere A carries a n4o vjadoh8q yq/h350cr vcp*0 et positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is co acvcqoyh 84vr0 0*dhqo/jp 53rrect?

  How can a negatively chwhor6 ;k7wu,parged rod charge an electroscope positively?

  An originally neutral electroscopk+qac2 -hxxu(e is briefly touched with a positively charged glass rod. Th2 +chu xxq(ka-e electroscope

  An originally neutral electroscope is grounded briefly while a positively chaiy1zix9 jg4x fm -3 o,/e:xthzrged glass rod is held near it. After th 4-jz ye9hg: zfximxtio1/x3,e glass rod is removed, the electroscope

  A positive object touches a neutral electrosc yucgfe60i( g3w5s4b8tp9k/ewovu-tope, and the leaves separate. Then a negative object is brough f3 u-w05o4p 9uybtct/s8ikvwege g6(t near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table./j3tx ooer1: i A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls alonx ro3j: 1io/teg 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 the Couly1+ubv zu-te+/ ba4ii omb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dion4bxmm 8ku kvya,mbm q0.:g ;-*hv*f stance d. The first charge is larger in magnitude than the second cmvvny* u q,;:k ok.mh b-a0fx* mm4gb8harge.

  Sphere A carries a net charge and sphere B is neutral. They are placej9r a8xz 3 haq/z7q/; (gihuwqd near each other on an insulatedixq3 /g(r7a a8/uwhqzh;j 9zq table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other w pobj.7 ix08ariy ;f6lith a certain force. If the charges on bo8aol6xjb p 7rf; yi.0ith objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces o vmh+t5(gtbaqmml2.26x9 dqwu5zi /z f F on each other. If the charges are sep(mmx5 6 z.h2bzq 2mtwil+utqvda95/ garated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract epw k1a *5u drd.w1ubx*ach other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, andd bx1w par1.ku *d*5wu 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 happens s7kt e r9 +ie,lnwe:p1s g-,pmto the magnitude of ts:m+ 9sgp p -1rwe it7,kene,lhe force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What l d1tibu6( *0/nv jiorhappens to the magnitude of the force on the first elecb j6dl0vo rtnii 1/(*utron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens to 3gettq *q6skq8e ttt ha0s306the size of the force 0tqqat6hes8et60q s3 tgk *3t on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When as :y7* rfb7fqv 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 positiv b rfqvf*:7y7se charge at the square's center. Now, identical charges of -Q are placed 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 of an equilateral triangle. f0s4 1giy lgu2When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 gsuf4120il ygN acts on it. What is the magnitude of the force that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following awdlcej1:.wmn i z w+ hv8b;ag,1lm19 is not a vector?

  At twice the distance from a point charge, the strength of the electr2z 7vdsq 6dfuh9we3 ;xic field

  Is it possible to have a zero electrga: 7jm9rwr7dg359q jvxs , jvic field value between a negative and positive charge along the line joining t99 rm vj,a3sxgg qw7j5j:7rvdhe two charges?

  Is it possible to have a zero electm6ao1j naa zg;. b (bg2.2znfkhiv)+ xric field value between two positive charges along the line joining the tnng62z. ab)h2fk(x mbv.+ ;ag1jzaoiwo charges?

  Electric field lines near usv rtzks:0 m-lj f-2/psitive point charges

  The electric field shown 2 kl0z;avw9 ,m0jetml

  Can electric field lines intersect in free spac4a odz tkxq,8 ap2 f)46wlqh424sm oxbe?

  A solid block of metal in electrostatic equ,,6wwp gmg2 nvaeh9,dilibrium is placed in a uniform electric field. Give a statement concerning the electric fie9e,wh ,d6av ,ngwp2m gld in the block's interior.

  If a solid metal sphere and a hollow metalu4 l 1flcbqi-xz3 34db sphere of equal diameters are each giveud l3bi1 4c b3xlz-q4fn the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a rev9cjg,7nx/ kl qh t77rgion where a uniform electric field is directed straight upward. What can be said concerning tl7xkn j7qrct/v, h79ghe charge on the block's top surface?

  If a conductor is in electrostatic equilib- hj :mt(qxlsqec41l:rium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groub:l9.1 suuw5mtz3 j cended. As c9z1mbs t uuj5le:w 3.compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equ/3nx n s5nz,rqkb ;f-uilibrium.

State Gauss's law.

  The charge carried by one electron iseg *.tunsn *6j 47eprs $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2.9u2 f*bvhg- px00 mC. How many more protons than electronsfhp ux2b g-*9v does this piece of plastic have?

  What is the charge on 1 kg of qiz+ s/l w;)kaprotons?

  An atomic nucleus has a charge ofoln ayxt2) b sv82o d7zpg9:5t $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, have charge values of 2.0 and -4.0 mC, ro7-lo/+.u:h zldt8q xcq s zyb*v3a l*espectively. What is the magnitudel-3yl+bs. h lv*u t*cadzz7q/8:qoo x of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the foruohzfp7xn o ych3 r*et.65 zx15hq,3m ce between them is 1.0 N. .7mq5x3r *uz1p hx6 ht5z,he3c foyonWhat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. /g aaz .)an4xs How far apart are they?

  The force between a uae*gjvr0:,ad8qwr 5v ;+ex vji e (ci)6.p kp$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apx,0in6g5vgm+fa fff* + ie0pd art, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric+5gvf,df xfg0+6*femi ain p 0 force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firsdw 7hz7crut7: +cg7ant 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 force which acts on thed 7nhcg:+cu7 ztwr7a7 charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 me ifw(p(*d3 s6ee7oiuz;ik e2-h2evoC 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 the magnitude and direction of the electrostatic force whice(i;23ef*iio eo- 2h eez6dwv7(sk uph acts on the charge at the origin?

  Three point charges are located at the following positions: Qpun g0d u g:1gzoz,80s1 = 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 uo1 znugsg: 0,d 08zpgforce on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, 9;l3 4jx kjy (fkafu e-6qzot.and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the positive charge at the center.yxu3t(9e o;-.4kfk lja6jzq f 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); 3aziox-i)e i1ntt (fi/4p/ zqQ2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What taitz-nfi3i/ i4z( pq/1x e)o is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is atzt3, ,mz w0gqx (0, 0). What is the direction o 0wq3zzt,m gx,f the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the v(t8-;miwb;1/f axs wxvtk1cl ertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatv(x8 ;c;fmw xl-1/kwit sb1 taic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what pobp;oqih,-c 0yint, on yc;iph-0qo b,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 zero?

  A +3.0-C charge is at the origin and a +9.0-C charge i*2w7 z 08jheuqzq7wljs at x = 4.0 m. Where on the x-axis can a third charge be placed so thwzj7q2 jl h*7uz 0wqe8e net force on it is zero?

  Charge +2q is placedhc 6ue2sp (a+x at the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that te cxhu(2ps+a 6he force on it is zero?

  A copper penny has a mass o 56k3 ffjp 8ly ;g6ob5,xvkkarf 3.0 g. A total 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 grafp* 7es 4zte.rvity by the attraction of a fixed proton some dis t* 4e.r7efzpstance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threadspq.v;84iugn8 wy ku)v which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle betwe8kny;g qw )vuuip 8.4ven the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is thzp7qx8yy )r93h7 ewpj* lugc -e magnitude of the electric fhu rq77)l 8wecx gzpp-jy *9y3ield at a distance of 1.0 m from the nucleus?

  What are the magnitude an) oilbvkh98oy c, m:y:pl7 id1d direction of the electric field at a distance of 1.50 m from a 50.0-n liy:pv :icklh,8y9boo7)m d1C charge?

  A 5.0-C charge is 10 m from a small test char s:+7n+ hgj0 lexxpnk9ge. What is the magnitude of the electric field at the location of the test chargh: x sg7pe0lxn9+ +knje?

  A 5.0-C charge is 10 m from a s joyt239 hpv(4p )zzzemall test charge. What is the direction of the eleczopz9(yp 3h2t)zv ej 4tric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of tf8gst6oiv p, en945xxx/ b+5wy sld.ghe force experienced by wtg+ d/n 8os.xb95fsxexv6y5 il4 pg,a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 v: yz/ /k6s8)chnidsrf5gd5b/n ag a *C and are separated by a distance of 4.0 5nr g:v6 k/ayzh/ bfa/)sdni c58d*sgm. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sti+j:r1fc5o(mh.a j lsh 0 sx5ghck and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm j ljh+oxh mshs f.50a5r1c:g(mark?

  A 5.0-mC charge is placed afs-wl *xrm4e+ t the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a -e* flw+ xr4msline joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placeddxm gpl7vs0,isp7*m : at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midwa7mi,:0 px *g7pslmvsdy between them?

  Three 3.0 mC charges are at the three corners oxdg* n 625pnfdf a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Finpx d*62fn dg5nd the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are :mulpo/ez o56 placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is the magnitude of the e /lop5e :o6umzlectric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placeaxyq3q* zp9e*um(kt/ y ggx,*d in a uniform electric field. What is the magnitude of this electricayk t x z**g3gxu9q/m q*p(ye, field?

  A particle with a charge oy t88l-ein 7d0-- s wofq(kr8gvt rfposi*)8cf 4.0 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 +9k-)rc fwd jng is placed in an electric field of 6000 N/C pointing downward. Whatrdjc -kn+9)wf charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge ynx+roqa/ 5 8sof -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the forceoa /q+8 5nysxr of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chargbmkc 2q jw/1/ 67emwfbe of +2.0 mC. What is the magnitude of thkqwm1b 2ceb6/f j7mw/e electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a chargs+nw59 mdqi:j e of 3.0 mC. What is the electric field 6.0 cm from the center of th q9m5djn sw+i:e sphere?