State the law of conservation of eley26m 0,d2akxr8luo1 gj :j sccctric charge.

  Is it possible for two negative char fbkw8)7pw+m mges to attract each other?

  Is it possible for a positive and a negative charge to attractmlx -xe6 u:gj g;/7s0apiy 2 tbkcur., each other?

  A glass rod is rubbed with a piece mteo r:ix9t0q3fc ;w e yp3*j2of silk. During the process the glass rod acquires a potftyx:o mwqe 9 rei3j 0;2*p3csitive charge and the silk

  A proton carries a

  The model of the atom shows a,h -+lfg wdb;c

  A neutral atom always f cpz7+b iek3j1qq*6rhas

  An atom has more electrons than protons. The atom k,+bx*3 szjc;dz ;lvbis

  Materials in which the electrons igav f 5q5j2 au(/1d tt7cwz0uare bound very tightly to the nuclei are referred toajuc(7 it0d /gztfaw1v 5q5u2 as

  Materials in which the electrons are bound very loosely to the nuclei anv jw ;x,e1t, r3jz,fktd can move about freely wtfz r,ej ,,jtwv; 3kx1ithin the material are referred to as

  A negatively charged rod is brought near one end oft ;-8rpi d9tnkk ,pkf ww+t4b(uol9 4r an uncharged metal bar. The end of the metal bar fto8 k4 9tfp wk4+, pi;urwn-d k9(rbtlarthest from the charged rod will be charged

  Sphere A carries a net positive charge, anigoa9l7 (gs 6,:gju gid sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a w,igg7 9(o: l a6uggisjire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscopekr e8,9yi:eu ;;a1alo:ubz6ru(u :wkh evl , d positively?

  An originally neutral electroscope w7id st83y 9euis briefly touched with a positively charged ds78 tyw iue39glass rod. The electroscope

  An originally neutral electroscope is groundvk:as f02iy(6z -p2r wjz s3jxed briefly while a positively charged glass rod is held near it. After the glass rod is removed, the elecyv6 :sj wp-sxf0jz(kia 23z2rtroscope

  A positive object touches a .y2sqlh uzb(p d1- sf-hhf4r8m:p /ju neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope.fuysph hu jh 14dplbz-s-8( m/f:q2r, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. Abb( rao41s1 9dhujj +)hm,kxz neutral metallic ball rolls straight toward the objh1r9 j+ , hx(a1d4u)bksj zbomect, 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 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 Coulg:g1,mp 19lf)ksye 4r cg2,vklqdc *zomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by ax,zsi b6h5vs9 distance d. The first charge is larger in magz,s5i9xs v 6bhnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near ean w211 ilmsfk6pdx t 14nv-vs+xru ;u3ch other on an insulated table. Which statement best descriud6v; m+rs2-x1k nlvwi31 su1pt 4nfxbes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If0( m v/mgw5xzu the charges on both objects are doubled with no change in separation, the force betwe05g umw (z/xmven them

  Two charges are separated by a distance d and exer7w ci77sm io,/ -q dfc1qbzx9vt mutual attractive forces of F on each other. If the charges are separated bfvo ,s/-cd qi79i 7c17qmwxzby a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happen;iksg:(s rgxbnl*t f32s0ary58mm x6s to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers y t2rl;ba gm*f8x s(563 n0ss:xrgi mkis reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by aui k-,x7sz /rwgx/wb3t: *sqx distance of 1.0 m. What happens to the magnitude of the forcetur*x/7 w : i/-zg3ssk,bwxxq on the proton if a second electron is placed next to the first electron?

  An electron and a proton are sepa9ujgqjl0 4 -llrated by a distance of 1.0 m. What happens to the magnitude of th-4lljul j90 qge force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a dvc2g z k(f7y2iistance of 1.0 m. What happens to the size of the force on the igfz(7k cyv2 2proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed cz+r )cu ue4f6at 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 4uzc +6 fcr)euof 2.0 N acts on the positive 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 centroidi* subv lv/:9 mbo0t(b 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 center charge due to a third charge of +Q placed at one of the other v o(:i*9/m0bvs tluvbb ertices?

  Which of the following is not a ts q-fad4g28pqv g7-zf7t(pg vector?

  At twice the distance from a point charge, the strength ofv x74v*t8 /qoow1wv te0k*tvt the electric field

  Is it possible to have au)gjsobo4v g/7g9/0qua y5:tb wy1 s z zero electric field value between a negative and positive charge along the line joining the two chargeu)b0v9q7t s45yg osg / u/abw1jo:g zys?

  Is it possible to have a zero electric field value betzl-5x(olje b0j )uox) ween two positive charges along the line joining the twoj) ex ozlx(u-oblj0)5 charges?

  Electric field lines near psitivg:6gg) oo1uk-tgkjy lns;/angb8 ic3-u qr72e point charges

  The electric field shk))d+ (e5a eab*rztj0usom j04zes. jown

  Can electric field lines iefdjw9b oa m:.d.y ,za;-r 4fkntersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifo c qm krp6ms/al1:a,t:ose q39rm electric field. Give a statement concerning the electric fie3/aspelq m o:qk ,s16arm9c t:ld in the block's interior.

  If a solid metal sphere and a hollow ck*wh,h/ )veh mx4tp.metal sphere of equal diameters are each given the same charge, the electric field (E) midwayhmw,h4hev x.t/)*pkc between the center and the surface is

  A cubic block of aluminum rests on zt1mjkb1/z8nj yc6 ml2slncz 4 u5 k9*a wooden table in a region where a uniform electric field is directed straight upward. What can be sazm4 lcl8utjm2cykk5 9*1b nj6s znz 1/id concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near anq qjpl.3pd( (.mqi7kp electric charge

  A positive point chargelq 7p,sxgu) 4f is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the h q)gl7 su,fxp4ollow sphere has

State three properties of co2sy00yi bb)yz nductors in static equilibrium.

State Gauss's law.

  The charge carried by o :3rrhpp23 e90ahh7zyjldtw +ne electron is $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2.00 mC. How many more protons el v6)ou ud3j/zb(m-c than electrons does this piece o )6vjm-/bo e(3czd uulf plastic have?

  What is the charge on 1 kg of proton) xwqu;*yqr9 ms?

  An atomic nucleus has a cha 6v lya0jzdc*9rge 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 charge values of 2.0 and -4bk03woyu-0 emt1n (7c rzdql(.0 mC, respectively. What is the magnitude of the electric force between yd(et(n -bu o 0k7wl3rm1qzc0 them?

  A 1.0-C charge is 15 m from a second cg(-2x ql e dg(e+uqh7gp2 oiu1harge, and the force between them is 1.0 N. qd1ou +g(7 gpg(e 2eqh-u2ixlWhat is the magnitude of the second charge?

  Two 1.0-C charges have a force between tv 5 yzxhcht4/+hem of 1.0 N. How far apart are they?

  The force between a hb 9i5e; 7/ wl8sfy8c hk.cite$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience ajp-o7yu r)ach vpeu 69 eepy1-1bnm 3( 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electri eyb9ppu16) 1ecuema-7ph -r j3ony (vc force between them?

  Three identical point charges of 2.0 mC are pla bg nfv9lwnw fo380;+nced on the x-axis. 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 n;v o8l 3 n0+bffgwnw9are 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 ofn j3f b,ay-xl9:gi ,ow +2.0 mC 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 which an:b, j3w9oil,ya x- gfcts on the charge at the origin?

  Three point charges are locah2 (e+*kmw dncnk9 -i0uvezi f( ;d6smted at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -hv (-6 *;zndewcksfidi9m 0(un e+mk21.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is p wm/ wxj n4bw+kj4d1g2laced at the center of a square, and a second point charxwjk4 wb dm4+1 njwg2/ge 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 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 = -sl,7keck .v r:1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What ise.cv rlkk7s:, the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.3vx+ s0ns8 f7xj0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is t fxx0s +v8njs7he direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are plagomii6 zxgp)zvrw5b9xk 7p w26 v75u( ced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the chargek rg56wzxvip2 u)b 6 x z9mi57(g7wpovs?

  Consider point charges of +Q and + zn(s lh havv8, 30wj;mxs;dt-4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the e hsdstxvhm0v8l;- awz (,;3nj lectrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is ei(li3 v) ly)q3mk v3uat x = 4.0 m. Where on the x-axis can a third charge be place)3 3lv iy(iv3e)qmk lud so the net force on it is zero?

  Charge +2q is placed at the origin a(8mq*nc*2qt o(tdpdu nd charge -q is placed at x = 2a. Where can a third posip82 oq(nt *qud* tc(dmtive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 *yeiyn.s(0t d (ltmi+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 they g s5u,a.ox bmp1mbjl7 grtw,87v3;x force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the m 1o,l ,x8jwugmavp3 5 b.7sbx7 ytrg;proton?

  Two 0.20-g metal spheres are hung from a comf vv8w+0-l3 nazifb4xmon point by nonconducting threads which are 30 cm long. Both arel f84zwxi afv+3-0 vnb 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 of the/ f8 2ah(x 2v2pbpp9uj*tv sfy electric field at a distance of 1.jx (/2pb2a fvp 9*tuyp 8fvsh20 m from the nucleus?

  What are the magnitude and direction of the electric field at a distakhv 5d g9.p: myy1ju0cnce of 1.50 m from a 50.0-nC charg.hd5:mjp 9yy gc0uk1ve?

  A 5.0-C charge is 10 m from a small test char wwlx/;ef 8vd+ge. What is the magnitude of the electric field at the locatio/ewvfw+ lxd8; n of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is thf u u43zo9gmq:e direction of the electric fiem ou3 :fqz4ug9ld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitu4s3er i,6je 3hvd;x-wavz-rude of the force expvz6 h34rev jd-;swu 3xie-ar,erienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separatl q5(al- k6q-kz1a, c)jce u7m2 toecred by a distance of 4.0 m. What is the electric field at a point m2,l rqko 5ej1 l ceccqzu(ta )-a-k76midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and aq ,(q2 o.tx u7j+mwvqw -4.0 mC charge is placed at the 50 cm mark. What is the electq.qtvuwm(+qx7 o wj2,ric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark nz)j upk b6pzgu7 (n4qxid/ ;6tjb;6b of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric fiel6ibqg;jpkjp()6/b nzd;tuxu7 64z bnd zero?

  Two point charges of +3.0 mC and -7.0 mC are placed atb3vx x )bxnmt*9qa w)yw( x6y4 x = 0 and x = 0.20 m. What is the magnitude of the electric field at the poina (b)yx3w q6m )49txvw*yxb xnt midway between them?

  Three 3.0 mC charges are at the three cornersf) 4zpd3v-gp y i/ufw2 of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. pdv4i z /ug-wf)2pf3y Find the electric field at the center of the square.

  Consider a square which is 1i 3a v,7 lm7o7aht1dus.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, 1); +3.0 mC at (1od3a777tl v,uh1imsa, 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 actsq/25mpgsyt .7nap0jl-* pzsej w-4kq on a charge of 5.0 mC when it is placed in a uniform electric field. What is the ma.zwl/4 p*0-ya- m7k2pn qjpg 5ss jqetgnitude of this electric field?

  A particle with a charge of 4.0 mC has ah)a5 a dk20h 5/gquj5kggb1pq 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 electric field of 6000 N/C poina;m5*gib y9ewb j65b-fw/amccia3f , ting dow-3y/b*,iwij ; mf5 ec 5mac9ab6gfabwnward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charg uamh h nob1x;r8*;sz.q:r*c le of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are x*z ;bmrl*:1 ho8 cn;s.auhrqthe magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a xy ehz0o* a,d6charge of +2.0 mC. What is the magnitude of ,zxdah0*eo 6y the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the rr2)yzj5 m e3i -zf;wrelectric field 6.0 cm from the center of their2w; zzrm) rje3-y5 f sphere?