State the law of conservation of electh;j )l7r e6df(7.caogg exhi+ric charge.

  Is it possible for two neg4 jmw: n5*zpv 7iq3mn+6cwejt ative charges to attract each other?

  Is it possible for a positive and a negative charge to attract etxl3r6jbz77 )ci o n3l/mskp 8ach other?

  A glass rod is rubbed with a piece of silk. During thez q7h,a4l7guc process the glass rod acquire 7hlc4uq,z ag7s a positive charge and the silk

  A proton carries a

  The model of the atom sh7kxp,x.39ibco y p8kc1zy p0h ows a

  A neutral atom always h( xrmtm6bar;j6pn l )*6mzr,cas

  An atom has more electrons than pro*kj1i7c10zj5u z vx lztons. The atom is

  Materials in which the 4e-5ps tn m0q9jkji 36ei gg:uelectrons are bound very tightly to the nuclei are referrek itq4s em69-n5 u3j pi:gjge0d to as

  Materials in which the electrons are bound very loosely to the vn-m4dqh k:8 aexx /3;8omv lsnuclei and can move about freely within the material 8 v:k8d/lxo;x3 -mnvsah4e m qare referred to as

  A negatively charged rod is brought near one end o;gi1ips9 nge )j:g-1x wgjbea yn8.k9f an uncharged metal bar. The end of ;n wa8nx:y k1 jig)1s.je-ebggg9ip9 the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neycsc4s,x- ox *9h4yteutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that * -,xh 4yoc9yssect4x is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positgft8 3/ wan*ctl.pl 8nr z+2+ f5xnwamively?

  An originally neutral electroscope is bn3e s)* fo yokl/65mdyriefly touched with a positively charged glass rod.kf *65ym )losn/doe3y The electroscope

  An originally neutral electroscope is grounded brief vd: d7jn(qp4tly while a positively charged glass d7t :4jd q(pvnrod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electavdu3uz9 j,yt, e6ei8 roscope, and the leaves separate. Then a negative obje9 ,vuy,i a8u3d6 tzeject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object ism5 r:zdac (34aqms1gq 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 ods14zq 5qr3 cmgma a:(bject. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb 0+ n :svpsrgx3constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dista;d evcj1ob5:)oo0 sbh nce d. The first charge is larger in magn1 oe v5c)odhbsjo:b;0itude than the second charge.

  Sphere A carries a net charge and sphere B is neutrmvvz e s17gwy*(c9ul+jq- yf6 al. They are placed near each other on an insulaevyzf v1gl7s*q+cmj(uw69 -yted table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other wix5k 9cvd y7pr:2u x6qvh 7jgr1th a certain force. If the charges on both object7y2vg v 1u 5:xhj7 rd9kqxcp6rs are doubled with no change in separation, the force between them

  Two charges are separateud.jwz9 3;gpf l1y b,bd by a distance d and exert mutual attractive forces of F on each other. If the charges are separatedb1l judfp ;3.z9,y bwg by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other witc2cxf2 fxs)ag2b9t1 y h a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance betw xsct922 2)1af gbxycfeen their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separatsc)1 7sy o8zq4 7f+ne,nt 3vluz:sxz ded by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placez7e c7sd)sn z8q,n xt +y:uo zls41v3fd next to the first electron?

  An electron and a pr0 (s7xvha6g7uo3t kaeoton 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 a3x6k70g ast(uv7 heo the proton?

  An electron and a proton are separated by a distance of 1.0 m.e osuhz0:gd *.)j sjfs7p-cf( What happens to the size of the force on the proton if the electronzf: su 0e -ssj) .gh7j*pf(ocd is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second pa4ghfvg nqxj )8e6 fa8-(l/uw.o 2orpoint charge of -Q is placed at oh8w6x(nj f/-ro4opa ae.2u l)8qvf ggne 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 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 tria;/msiivd1 /cyngle. 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 tc s /ym;1divi/he 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 is not a vector?lk : 0faky7 p6xurq:7t

  At twice the distance from a point charge, the strength of the electric fielj 2tj t;h4;nts-*ys hed

  Is it possible to have a zero electric field.z:d ydjvhg5/ tnj m02 value between a negative and positive charge along the line 2ngjd z. 5tmd/:h0yvjjoining the two charges?

  Is it possible to have a zero electric field value between two p4k:m;6dm qdik spjp5zpf6z 20 ositive charges along the 6;s:kq02dzpj zmm id 6p4kf5pline joining the two charges?

  Electric field lines near psitive poim 5tzbyii)q o1r5ghll*,(fd- hz8ps, nt charges

  The electric field shoqn,fq:m ndi 9 6jcu,/cs +ou*vwn

  Can electric field lines intersect in free spac:4.i(f5ub8d w v 2qk:xej*wygg h(iwge?

  A solid block of metal in electrostatic equilibrium is placed inp(0q8vkt4ltlncuu b7 ac l9(or0 (z7n a uniform electric field. Give a statement concerning the electric c0qlztcln7 ( kra47(utu9lb08 npov(field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each v tuvt93-7 ejzgiven the same charge, the electric field (E) midway between the center and-tuz7 e9vvj t3 the surface is

  A cubic block of aluminum rests on a wooden table in a region -1zg +gs ci0cpzn89ilwhere a uniform electric field ig91c0-pn zszlc 8gi+is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in e pg:de)tr6 g1kx9ooj5lectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere t;odi:+y:m(l gg( mx1+-q9fxtvep tde hat is grounded. As compared to the casei(:l:1dmt (m;t+xv dopx yqg9+fe g -e without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conduc.dx/;04ak j uq0g8ymb w7oen ltors in static equilibrium.

State Gauss's law.

  The charge carried by one e93thds 4xuk1 sfa3pjk7q c3m33t t6n tlectron 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 protonssjip,k h te3;1 than electrons does this piece of pp 1kehj,3t;islastic have?

  What is the charge on 1 kg of protons?dl */b pk //sqp(kbjx9

  An atomic nucleus has a chav eo;r *+kzg0: ay3ze+o r0zhnrge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated byj sk2 s n-ht,hp nw:*u4cd4/si 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electrich/4ns,wt :ss2ujdi- kp *hc4n force between them?

  A 1.0-C charge is 15 m from a second charge, and 5yd0 6 cinhkr)1ye .uwe+g q;qthe force between them is 1.0 N. What is the magryc0 kqyg;)i ue5wn1.eh6 dq+nitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are t qr/nnse3 tfx7;vwg 7+. am9ohhey?

  The force between a kctnp 82 0 4i 6ezv0nxbj (fwi9,0.ah;peekh o$30 \; mC$ 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. Ip.y 1ht-3t przq m.3cwf they are mq.3 tzpm3p1.y- twcrh oved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on thebe*e2)0cvki z x-axis. The first charge is at the origin *bve)i0c2kz e, 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 the charge at the origin?

  Three point charges are placed on the x-ax*bp4 a1o0syr yis. A charge of +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 rb *y0o p1sa4yof the electrostatic force which acts on the charge at the origin?

  Three point charges are located at+pse 07tm ng2 jb3q4at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = g3e apbnt4q 2smj t+073.00 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?

  A point charge of +Q is placed at the center pu8.6w ,h cat(;mspq1 6rgrm vof a square, 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. What is the magnitude of the force that acts on the center charg6mr w cpp,surm1aq; 8h6vt.( ge 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); Q3oh+ :8o uckat: = 5.0 nC is at (0, 0). What i:h c8+ko ao:uts 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 atvk no:k,dj 8d0dw);ps (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force):s,nkpdv ;0dkd 8 wjo on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an eqfb60+vmc8-gje-t en4j i-r ytuilateral triangle which measures 30 cm on a s i8e m046vrj-nyft bec+-gj t-ide. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Qx3a* basxy 8h1, 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 electrostaticy1ashxx83a *b force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-Cyt kup0.*ka+z charge is at x = 4.0 m. Where on the x-axis can a thirk.py a*z t0uk+d charge be placed so the net force on it is zero?

  Charge +2q is placed at the ori a3,hw ,(xm+t uxf3vr3*: yu vsok(svfgin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that :vsh,u o kmxxw3( t,f (r3s+fvv*3uaythe force on it is zero?

  A copper penny has a mass of 3.0 g. A tg7z) bwf5(ay/eil*dg otal 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 t9ixswf ;qf5:c-fh hmeski2u o z./9l/ he force of gravity by the attraction of a fixed proton some dii2me i-fc:sqf5x; /hfkl zwsh/9 u9. ostance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from ai t/,y0yia2f dc;;pe s common point by nonconducting threads which a;fa;s2/ye0 p,cyidit re 30 cm long. 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 of tr av;yi(ums- im zv ;ql5.gj+8he electric field at a distance of (mm+vr;-iq;g ja zl svu 8y5i.1.0 m from the nucleus?

  What are the magnitude and dirhivv;0 tw2f.+q vg za4ection of the electric field at a distance of 1.50 m from a 50.;2 a+.wg0v vfzvi q4th0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude or 3ypwxe)5s.(v3kxkyj4 d)uff the electric field at the location of the test charge?)e fx4jk)xpv3y .(uw5 3yr skd

  A 5.0-C charge is 10 m from a small test charge. What is the direction of theh2g4z (aqct 6(7pfh sb eaz b gpth2h7s fcq(6(4lectric field?

  A 5.0-C charge is 10 m from a small test :oicyv . n.grx+ (ij-mcharge. What is the magnitude of the force experienced by a 1.imvo-xin .j .c(:ry+g0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separatet4kx/3 0m kz(tuuut,w d by a distance of 4.0 m. What is the ettmk(tux,z3 u4k/ 0uwlectric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick :ooz 3 n.pb*;v h1is xipaqh1*and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field a v1 a*pb:3hx poshqn.i*i1;z ot the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chan e7(0jlezp *qrge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zeronz7 p ejl*(q0e?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0h6q9.qps s3cd:fdr u (ia 7kxa*)dg9m.20 m. What is the magnitude of the electric field at the point midway between them?adhkr .7 d9)qa36:fpx9mdu g sqci s(*

  Three 3.0 mC charges are at the three corners of a square of side otx897llwwz40.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center l8woxz 4 7tl9wof the square.

  Consider a square which is 1.0 m on a side. Charges are placed atezzr85 tvint(u6g(a4iin9 d4 the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1,ni(itn i4g 64z85u9v (rztade 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 plac8vl2/nxq p1nj ed in a uniform electric field. What is the magnitude of this 8p jnxnql12/v electric field?

  A particle with a chavcb;)vd8 ed 5w2+q: kgjbtb6irge of 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 g is placed in an electric field of 6000 N/x4 shx6; *qk+ogifqk/C pointing downward. What charge must be placed on the ball for it to bekfkg +ix*;4qs/x6 oqh suspended?

  A foam ball of mass 0.15oq a).v naq12c0 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of tv.a) c1q2on qahe electric field?

  A metal sphere of radisn-yu k1c6 vnbcfnw 96fhn6 21us 10 cm carries a charge of +2.0 mC. What is the magnitude of the electriynh s9kfbnw1u 6n -v2f66cn c1c field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries amq mg5 z92d-gi charge of 3.0 mC. What is the electric field 6.0 cm from the center of th5-qm mg9d 2izge sphere?