State the law of conservation of q(y rnms p 7q ysvu364cwrn,98electric charge.

  Is it possible for two negative charges to attract :5+avdt 8o shyeach other?

  Is it possible for a positive and a negative charge t97juq6zhj-tao; c c8x0ob p*po attract each other?

  A glass rod is rubbed with a piece of silk. 0 xwrqq58/ri7 kiz6pi5xy 7 txDuring the process the glass rod acquires a positive charge8rx5t7rx /7ii iw0 qy6xp5qz k and the silk

  A proton carries a

  The model of the atoml2vunoun 5m* b6h/ kj+ shows a

  A neutral atom always hasqy6e-, lidtr5-ifdc qp6f4:y 3(tqlx

  An atom has more electrons than protons.ze)lasf ;3yq( The atom is

  Materials in which the electronsf+5mcc jt7 gp3 are bound very tightly to the nuclei are referr5fcc+mj p7 gt3ed to as

  Materials in which the electrons are bound very loosel apff 5k 18bnd-bz/*sry to the nuclei and can move about freely within theb p5fkb*- dzr8fs /an1 material are referred to as

  A negatively charged rod is brought near one end of an uncharged46rdm6zvy dw09y2g ll metal bar. The end of the metal bar farthe6 m6ly4 gvzrddwy92 0lst from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. pw4w*vpa2q e y- 47 v1n6 yee5f )k4ztchsenj( They are placed n1)vpp4saqhn vtey*k-e6 z4 ncw 5j 4f27yewe(ear each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivelyw50nhdpl) n 9z?

  An originally neutral electroscope is briefly touchexkbizxlf2 p03+ n py7e9x;8 svd with a positively charged glass rod. The el0xp y9i +7k8lep ; snz2vx3fxbectroscope

  An originally neutral electroscope is grounded briefly while a positively chargs,ap*4j6t ,bmabu (ajed glast64jsa jub, ,a*apmb (s rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and theck 1mm 0-*nlhs leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happ h *0csmknm1-lens to the leaves?

  A large negatively cy-- ljyb2(jyfxbbyo :m46en9harged object 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 does not touch the negative object. At no time does either ball touch the negative object. What is the fin2y-x-fj4jyb(: mboy bnyel96 al charge on each ball?

  Charge is

  What are the units of thecw 3wtnep -s p nn5v6.s ,4knoxgr*,3j Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chaarsupfnkw ie-ocs(9g69/ ua:p 1.pt 4rge is larger in magnitude than the secondugep- kci.pro6n1f/u9( a :4p wsas9 t charge.

  Sphere A carries a net charge and sphere B is neutr.k*mm1m kdk*zzue ,oh 2k/ l3zal. They are placed near each other on an insulated table. Which statement best describes the electrostatic*dmk m, zhok k2*/zl3ekm.z u1 force between them?

  Two charged objects attract each other with a certain force. If thy vz8; ordg z*t*xzr,x:-l,ci e charges on both objects are doubled with no change in separation, the fxdtrz:gxv*ol;z -*y8 ,,zi crorce between them

  Two charges are separated by a distance d and exert mutual attractive for:0zsrp,1wn khsg p u(,f1m,gjces of F on each other. If the charges are separated by a distance ok,hj1 s0p:u, gs (m,p wfg1rznf d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the forcju 6e4,m..yo )jdmizqdw9r(q e between 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 djduzrej).y 9mw4 (omi .q6q,now equal to

  An electron and a proton are separated by a distance of 1.0 m. What f1dz 7o)5fv ds8 bvmm+happens to the magnitude of the force on the proton if a second electron is placedvmfb 8od) dm+z1sv7 5f next to the first electron?

  An electron and a proton are sepb:1r-ckk rnax 9lk,/warated 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 the pron1,r:kcalkrb -9xk w /ton?

  An electron and a proton are separated by a distance of 1.0 m:3jny fj. xr-8.g eghm. What happens to the size of the force on the proton if the electron is movefrgy.3 n:jxh eg-8m. jd 0.50 m closer to the proton?

  A point charge of +Q is place /la)k:l oky,fd 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 placed at the other three cornerylfkolk ,a /:)s 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. Whnp an46j y6 0fj8uaawodm21f;h9k+ nden 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 chaufywn84 oanh29 j+fk6an d;01 dpmj6arge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vector?fwi ui)t6uem ,.hk,b)

  At twice the distance from a point charge, the strength of the ele9llyts2olu5e l5, - hyctric field

  Is it possible to have a zero l ruh d/.b77itelectric field value between a negative and positive charge along the line joining the two c7h7 dulbr/ ti.harges?

  Is it possible to have a zero electr,qt2r+z1m ots beor od- 6-b b3k-qeu0ic field value between two positive charges along the line joining the two, bq -be-mr o3r tso2-61ob+tz q0deku charges?

  Electric field lines ne.j )twd trg4 or83fcipf* *mw-ar psitive point charges

  The electric field showad tv5e9rt(*p7ic-j sbg o/n,n

  Can electric field lines:z(n gqr;w1k/7nn:+/gg zi x f xwkqr+ intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elec:o;( edkg7hr xjl,2cl tric field. Give a statement concerning the electricl cgre,dlhk2;j7 ox( : field in the block's interior.

  If a solid metal sphere and a hollow metal sphere okev -wx tn)tc. ,q0dt6u0tb7kf equal diameters are each given the same charge, the electric field (E) midway between the -,b6 .7 wq)e kc 0dtkt0tntvuxcenter and the surface is

  A cubic block of aluminum rests on a0p*t.gu t+;m nrgggj-ac( vf- wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfacev;nt-g p a.0tu ggjrm+f g-*(c?

  If a conductor is in electrostatic equilibrium near an electric cha0uet:k -k y(lrf40rdc6q/ ze arge

  A positive point charge is enclosed in a hollow metallick -0jf u e is1c e0t8nbke1dvg(851bam sphere that is grounded ibct8b0ve10e1e (5n-asg8k ujfkm d1. As 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 equilibribxc:*olfa amqs /l*j -5xwc).um.

State Gauss's law.

  The charge carried by one electron isz; c nop6f2,p6 vxqn;m $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a6 ms0 5w7u5t gl h4ocmofsw0:c net charge of +2.00 mC. How many more protons than electrons does this pit :oo fluhcm0sm5c64wsg7 w50ece of plastic have?

  What is the charge on 1.ty2n/,ogrfdk 1m17smhw ce 2 kg of protons?

  An atomic nucleus hasm0pjf +hi 9v3q a 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,v(t:a/5.fp tr h.tmentj +be/ have charge values of 2.0 and -4.0 mC, respectively. Whatrt te.(hbt m/jf ep+.:na t/v5 is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is fy:derm5 s1w7mae4 8x 1.0 N. What is the magnitude of the second cee8wmd7 y:sx4m5rf 1aharge?

  Two 1.0-C charges have a forceo,rv ju,tx: q g0ft0q/ between them of 1.0 N. How far apart are they?

  The force between a ezm9zpa3 mv1i skg ; d.92rse*$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cmz.t z9t qcv*2* onkl/l apart, experience a 1.0-N force. If they are moved to a new separation vzo9. l/t q c2nk*tl*zof 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placeds x)z-0vl(uh y ;je )fk,lgy5n 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 arl-0gkyl xu h,sf( ez)v5nj)y;e 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 nj8nu.* /-le. p ;cesfsm(ohimC 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 *. .f(hl-o;8c eme iusn/jnpsand direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are a.5 d d:+t/ psp27de coyphj1qlocated 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 = -1.00 m. What is the magnitude of the forp5yq1jd/od2 .ast d:cpph7e+ce on the 3.00-mC charge?

  A point charge of +Q is placed at the center/ /f2q1cbxs ndc 8yr tp)lz 6+v3vi1rj of a square, and a second point charge of -Q is placed at the upper-2l/j y btfrdvvs nzc3/x rq6pc8+11i)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)y: v) 7)+)bkrlj6 lycugj 7nrl; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the ne)v)lk 6n)clu7 br jgy7jl +:ryt force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = wuo grxl5ag79p/;5z lp9fzs2 -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC cha9p5/ gur9z5op gawlx7; 2lsfzrge?

  Three identical charges of 3.0 w6r jf3cj2xvy 1)kj/bmC are placed at the vertices of an equilateral triangle which measu2kcf/6rvy1)w3jj jb x res 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of 5wdk * n0cf xnmrm-7a7+Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, wou5awc 7xf* n70mdk rn-mld 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.cba6b2wg + ;qf0-C charge is at x = 4.0 m. Where on the x-axis can a third charge a cf26gbq;+bw be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a.*x(c uqz6c5 ni Where can a third positive charge +q be placed so that the force on it is zerczx6n*iu qc(5 o?

  A copper penny has a mass of 3.0 g. A total of xnu/ bkvo9 sdo)85617pl,q-swxg wnj $4.0 \times 10^{12} \; electrons$ 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 gravity by the attr mz cf;jmi3cu r21rs75 tonf,3action of a fixed proton some distance above it. How far above the elects moui rr1n,c3m2f 7; 5tfczj3ron is the proton?

  Two 0.20-g metal spheres are hu;6u:a. i)0xe8rb( xg zfw utpua-4rc eng from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until theg 8ureft) bec p r(i-6x4.uw0;xa: uaz angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charged vtf5ndes4x;m8p()x1i4 vq a of +40e. What is the magnitude of the electric field at a distance of 1.0 mx41dxaq 8t(s;veifnd5)vp m 4 from the nucleus?

  What are the magnitude and direction of the electric: i6.ih0;:rin8vftonad2w vp field at a distance of 1.50 m from a 50.0-nC ch:.v6ho2i ntwp f niird ;08a:varge?

  A 5.0-C charge is 10 m from a small test charge. What is the magso x.58 to210 ekknsjbnitude of the electric field at the location of thex8n1otebss02 jk o5k . test charge?

  A 5.0-C charge is 10 m from a small test charge. What i pzgshgq66 z4wez.u/ )s the direction of the electric /p6qzh )gz.sgu4ezw6 field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudes ;bk:i-cr)w d of the force experienced by a 1.0 nC charge placed at the location of the test sd;-rw:c ki)bcharge?

  Two point charges each have a value of 3.0 C and are sepa*;x(z glab9emq 5s 1(bno+rdarated by a distance of 4.0 m. What is the electric field at a pose lnb( r+ox(a51dg9b;qzm*a int midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a 8t /g6u +qkmwr-4.0 mC charge is placeq/k8m tug6+ wrd at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick andahqow)1k r,0z-zw0 w n 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 fh az-wr zk0ow)n,10q wield zero?

  Two point charges of) ibpx(:kf gzbs9a+3 x +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the poinp)sg 9:f(xikx+ ba3bz t midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The l0vuwc ) y*q z5lv(9gmbast corner is occupied by a -3.0zv(wv 0l9b) 5qguy *cm mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are i,ku8 +nm db0zplaced 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 electric field at thebkzid+08 u, nm square's center?

  A force of 10 N acts on y; n753.dd/cpc aydoj a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this pn3yodj ay/dc d7;. 5celectric field?

  A particle with a charge of 4.0 mC hb p7 m**.xh ut;ywy/gjas 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 acjaa4 8 s-g)byn electric field of 6000 N/C pointing downward. What charge must be placed on th8a jy-cb4g s)ae ball for it to be suspended?

  A foam ball of mass n*i 4j6p at e;*twr;lf0.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric fie lt6ra ;t;fn*j*w4eipld, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. ,h4z ujsfek*0o7u m) zWhat is the magnitude of the electric field 5.0 cm from the sphere's surfuh,0ekm4jo7)s f uz* zace?

  A metal sphere of radius 2.0 cm carries a charge of 3.087grtt azzjy23 u-x4u mC. What is the electric field 6.0 cm from 2u 4za tjy8x 7ugtzr-3the center of the sphere?