State the law of conservation of electric c na7(xdih5 8gzharge.

  Is it possible for two negative charge:xh 4hz2mdxi* s to attract each other?

  Is it possible for a positive kjtb5p , +d/hdand a negative charge to attract each other?

  A glass rod is rubbed with a piece nwzjcex8*ci ts6d uy)a0w*9*of silk. During the process the glass rod acqui9wj*aznd6s*w *8 ) cuicetx0yres a positive charge and the silk

  A proton carries a

  The model of the atotde c:r2-a)o mf/-ucjm shows a

  A neutral atom always hnk 7* ;jxfl1 cv35 3bopm4pqysas

  An atom has more electrons than protons. The atomz9ihe guzwvt 4zio9ddu 60 -+ucf)86p is

  Materials in which tr7 zp34p. jrjxcf a7.ehe electrons are bound very tightly to the nuclei are referred to j4p7f7e arxcz .rp.3jas

  Materials in which the electrons are bound very loosdny))v*z; f2 ;8kum zwiu:yylely to the nuclei and can move about freely within the material are referred)wz;unuf: ;vkmly2i zdy 8y)* to as

  A negatively charged rodtw:2yltbt0 q5 is brought near one end of an uncharged metal bar. The end of the met2w 0q ly5:tttbal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutrals lgo1-pa 9zzf8 7dxv/. They are placed near each other on an insulated table. Sphere B is briefly touched with 7 gzpv/z9d -la so18xfa wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscopedcw y63n8 s2db positively?

  An originally neutral electroscope is briefly touched with a positively cho+mzf nl)tw87 arged glassot)m+z 78nf wl rod. The electroscope

  An originally neutral electroscope is grounded briefly 8f o6 .jx0ig. + koohzs4jacl2while a positively charged glass rod is held near it. After 0acooi. g8f. sj6ox2h l4zj+k the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sepebmxw8a :m*n( arate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leavesxe8 ( awmnmb*:?

  A large negatively charged object.v b16pkhemo,:ob2 ne is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path followed by the first ball, strikes the first ball, and stops. The first ball rolls forward, but doe.keom2bp hb 61oe n,v:s 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 :q wd)n b.0-vr p3vrkhCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger iyr/1ot n86 fu e3jm qq8w8s;drn mnrmu 8;yjdre/o6qsw3 18fq8t agnitude than the second charge.

  Sphere A carries a net charge and sphere B is nt6fq -2 r80en,dl1ol5bu uey seutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic forc 0rodle2tb 8,65 u-nqus1el yfe between them?

  Two charged objects avte8b1o3gzf dps(9k 3k,hy n4 ttract each other with a certain force. If the charges on both objects are doubled with no change in separation, the force ,14oz(b ydpn9kg3k8hte3f sv between them

  Two charges are separated by a distancd/ r uduovq t,izkhr-ga :4f7c i-4-t3e d and exert mutual attractive forces of F on each other. If thug iv-fzi -k3utdrqr/: , h7 4-d4ctoae charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forcef g4+sgzd;b2s F. What happens to the force between them if one charge is df2gz4g+;b ssdoubled, 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 n*v 9( wh j;lbpknvdy0st-ia78+y 5fh5y(vbm m. What happens to the magnitude o kdi( vt y0snvy5jh7(h-vbm ;9 lwn8+5bp fy*af the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton ah og(jgmjv4 d8j6.y +opphk1 ,re 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+.oj8mpo6gh, dj jgk14pyv(h to the proton?

  An electron and a proton are separated by a distance of 1.0 m. me/ d9uxvv(wl1 g e2r+ What happens to the size of the force on the proton if the electron is mee 9v vuxrgd1l /(w+m2oved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second poinc6m/-6l l ab4/pm5wfig cn :xot 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 cente-mow n4/b l5pg6/xcl: mcif6ar. 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 j lyih8 hcx6qt ;.z.;xcentroid 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 fox;ql..xc68j hy;th iz rce that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following x 7 c 2doyw,zz6b1fz cm-d7(knis not a vector?

  At twice the distance from a point charge, the strength 7xt56;v 1q-tc/z-wdfcp : b-z opwrblof the electric field

  Is it possible to have a zero electric field value between a negative anbg i e pcu3zkf/7 n*exdbpx/v 08m5d9.d positive charge alcb// i.bxf39gz 8d v7np5d0k*xmupeeong the line joining the two charges?

  Is it possible to have a zero electric field ftdccwf 8 m,t-joq9cs30b* .bvalue between two positive charges along the line joining the two charg ,9 d*bq3 8b ctcfo-csmwtjf0.es?

  Electric field lines near p hv+u6ly dp.h: rqyj-2sitive point charges

  The electric field s(qzf1.a ddil3s6* 5 z*z uojvahown

  Can electric field lines intersect in free spacet 9 w2turh.7ysca .kg2?

  A solid block of metal in electrosta/w+he9;oy ;w.u: z,znuv n og7wf1qobtic equilibrium is placed in a uniform electric field. Give a statement concehw/z bq+,1yn fw g7 onouzue .ov9w;;:rning the electric field in the block's interior.

  If a solid metal sphere aqxufm c8:u6pfsy :m r -mo:bzl ,2gc7/nd a hollow metal sphere of equal diameters are each given the same -7mlcmpf/q, rsu :cu6yfobzm x:28:g 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 region where 2 i6tc w9icdq3a uniform electric field is idq cc62w3t i9directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equi) acicdnij*w*;0x10avsk b+g librium near an electric charge

  A positive point charge is enclosed in a hollow metallic sph /qa1app*fl;uere that is grounded. As compared to the case without the hollow spheref/ap*aq ;pl u1, the electric field at a point directly above the hollow sphere has

State three propertiemlydn60() vomv*dqlm - w- c/ks of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron isbc ts6zw)sops+ c:6 mq,ln0 /f $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a nef2j g bvfadyd6t4x;g): p /,/cs j;vxdt charge of +2.00 mC. How many more protons than electrons does th)46,c gdy2/jxxd :v;vbtfpd gaf/sj;is piece of plastic have?

  What is the charge on 1 kg of protonczpf gu.6a1/qtm +k z77 syk/4glf eg9s?

  An atomic nucleus has ale5t5fqj8 zh5wq0j; n charge of $+40e$. 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 chaw0-gg3yls *fk 7+m fblrge values of 2.0 and -4.0 mC, respectively. What is the magnitude of tm f-*kwgy+fb3g l7ls 0he electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between themcoya5 5n zamg*j005m xcz 9hc: is 1.0 N. What is the magm59mc 0j55 g z:anccoxha*0zy nitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are thcw 2cpkbj b;+4 f9rq. yxka:5zey?

  The force between a sqrnkyf/9 i,m, cf+u($30 \; mC$ 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 1ea hv4 ; gkdhx*s))n nwo:(yw: eh1g0 zly8fw).0-N force. If they are moved to a new separation of 8.0 cm, what is the electric fwn;o shlvdgh*1k8 fn:( ey0y)xh ze4 gww: ))aorce between them?

  Three identical point charges of 2.0 mC are pvxp8n;w c8sw y)v*, vplaced on the x-axis. The first charge is at the origin, the second to the rightc8p);x ,8sp ywv vvnw* 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 the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is pvf/l(lgd1j971r;y h o4kmrg6 g iuuo1laced at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 vl 6kuuhi j4y7olofg1rgd/; 19mg(1r cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at xp 4j *zoyul50f = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 fu*yozp j54l0 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second tben r7om,un1b*t8gey,b0 (xpoint 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. What is the magnitude of the force that acts on the center charge7u 8ennx y,1 to(bmg bret0b,* 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.,ed ,scgwdr59 0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the nete5 s,d, crdw9g force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is a -v3tomn*hk+ mdz w7 xvurz-vx;9ke:.t (0, 0.10 m); Q3 = 5.0 nC is at (39vm r-kuz* -7xk.;zew:n mvodth +vx0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mCmz2a mu6i2l ,u sbq. ud g5tpwj3.ks5) are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostat5lbtupgmi )q6mss5.kwuu , z3 a22jd.ic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whayhfaxhvat5*h2 anpt6 i3ya g)2.d85 at point, on a line between the two charges, would it be possib vi86ypng2 5tayh.aa3fh a5)tx *a hd2le 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 andm6 xsvb k;.;bp tic9;a a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the netkms6; p.x;icta9v;b b force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed e+f3hk(civ4ao e-i*9r 2iio h ig7ta9at x = 2a. Where can a third positive charge +q be pvgi97keo *+9iteic (3a4h2aroh ifi- laced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A to( h,s .szu:skrtal 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 em (e9o wu;+, m6cbwxmagainst the force of gravity by the attraction of a fixed proton some distance above it. How far abovow ,(mu9 mcewebm6x+;e the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncond64vfx7 +rfef1am(n))b3 gvntq;8 ifg; a on wducting threads which are 30 cm long. Both are given identical charges6+n14atffn3xaqn 8;()vmgbr fi ge )d;ovf w7, 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 shd3xk h 117gwjx; ra:the magnitude of the electric field at a distance of 1.0 m hg1j ;s71 3rd hwxa:kxfrom the nucleus?

  What are the magnitude and direction of the el8wsziq8a qp89 ectric field at a distance of 1.50 m from a 50.0-nC chasq8iz8aq pw 89rge?

  A 5.0-C charge is 10 m from a small test charge. Whatpc*i ;q.8xl/7x ufh -1,,c bzouupgjb is the magnitude of the electric field at the location of the test c jcuu,chx;ug- bo pl*,zp.7qbi/f18xharge?

  A 5.0-C charge is 10 m from a sma p f1y0xue4(t8lzx mtmd9) n3vll test charge. What is the direction of the electr4vfm3t )my e(8zlnxp09x1ud tic field?

  A 5.0-C charge is 10 m from a small test charge. What is tv m;78fwe3+)gai )oh gb:aa urhe magnitude of the force experienced by a 1.0)ogh7urvf3g:)aw am i+ e8ba ; nC charge placed at the location of the test charge?

  Two point charges each have a value of 3z(q 9wvw,1 a. gp yisvix*/t:h.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midwayhwwt/1pi . sagxq,:*iv9 z v(y between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a metvqbpwp ,:js1rh r*iuv s*y6 8:er stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm 1p ssq*ijvbp rhr::yvw*,6u8mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC a 5lbtm;;u +ipcharge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric5+;p mita;b lu field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 02kn p; (qd1twb.20 m. What is the magnitude of the electric field at the point midway betwe 2qn;bd( w1tkpen them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. tiw,fa2v3:p *fnh7j 2vt p9+:qeioaeThe last corner is occupied by a -3.0 mC charha p n:2* e+pewff3,t:9itjv7 iao2qvge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a lyuw* qx3qbo783 yuk0 side. Charges are 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 el3oqbq0 w ykyu37*l8 xuectric field at the square's center?

  A force of 10 N acts on a t j jsx u70jm2r)yub59charge of 5.0 mC when it is placed in a uniform electric field. Whatmj t r97xuy0sjj)ub5 2 is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of, y4gr dgwsn*5lg42nn $5.0 \times 10^{-3} \; kg$. 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 electric field of 6000 N/jsx3d-6 1 glhaC pointing downward. What charge must be placed on the ball for it to be susp gh 6ad3-xs1ljended?

  A foam ball of mass 0.kw +v8w24(wqsi vud2hll/ ok 5150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gr+l45whw/vk du2 2sw(v8 kqoliavity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm cqe u 7m,gyc9,jarries a charge of +2.0 mC. What is the magnitude of the electri,,qyu9g mjec7c field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a sr/kg5n cs a4psm:d v3le/:d* charge of 3.0 mC. What is the electric field 6.0 cm from the center of the spherkds g :vd4*/ca3p nmlre: ss5/e?