State the law of conservation of electric chaq): - rj9e /5w0gl llzx*rgm5ylye:ri rge.

  Is it possible for two negative charges to atqh qe+mwd+, z*s;d8dttract each other?

  Is it possible for a positive and a:*n.fq nj )tqv xg3usb50 vh0tt,xi5l negative charge to attract each other?

  A glass rod is rubbed with a piece of silk./t ;l6oh vfdjve fwm09uy1:x 3 During the process the glass rod acquires a positive charge a/f3ho1mt;d 9e uyjv6x0wv fl:nd the silk

  A proton carries a

  The model of the atom s )/- wcnydk6xqf(mu0de6o z x5hows a

  A neutral atom always xl:k2; tquwkyxc84*qhas

  An atom has more electrons than protons. The atom3v1+cc.l4 peced ;f8yvp2 pxkz +,uhm is

  Materials in which the electrons are boupkzyujy.vo2vl:7) d0* cp5 gq nd very tightly to the nuclei are referred to 2)op zdcugyyk:7qv0l5. j* vpas

  Materials in which the electrons are bound very loosely to the 2lu e)e4a(3d tr7u heznuclei and can move aboe3 2)z(tdue7h e4ur laut freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal +; y (figfc8he ttz)lwq(4lx;bar. The end( +x;y ffz)tg48wt c;llhi(qe of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Thqc.z oy4nouk w56s,6qey are placed near each other on an insulated table. Sp,6s n co6.z4qoq5uwykhere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivu/v7: 5xxz:e2oeq *bctg g e4aely?

  An originally neutral electroscope is briefly touched with a posit kjlj 42t+1 0o-p ewbpyam-f,fively charged glass rod. The electroscoppp4 jw +l2yf-eo1tb,j- 0makfe

  An originally neutral;mt 6.0 pxgsn8sl,is d.qk(il electroscope is grounded briefly while a positively charged glass rod is held near it.l( lqps6mdx 8.,k0 sisni; gt. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and thm +xg 6v6dc1* 4mpjjpee leaves separate. Then a negative object is brought near the electroscope, but does not tjdpmm 1cvxj6+ 4*e pg6ouch it. What happens to the leaves?

  A large negatively charged object is placed on an insulat q:-v*)yk6+phsxuu j jed 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 t : u-yp 6jqv+kxu)s*jhhe 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 thlh0.jcr0 tt7 je Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firsu7pug7 /pdn- ot charge is larger in magnitude than thpgn/o-p u7d7 ue second charge.

  Sphere A carries a netws*t: rl: 3/vxszq4sy charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostaty ws3*rl :ssv :qz4xt/ic force between them?

  Two charged objects attract each other with a certain force. If the charge3i xi1pp yp-)os on both objects are doubled with no change in separation, the f- p1)pip xy3ioorce between them

  Two charges are separated3jr3 gdd:s6 / wna. cj4 d/tquvkxsm:1 by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, d6qxwsj3u /1:m /s4v.3dkjacdtgnr: what are the new mutual forces?

  Two charged objects attract each other with a f3i-v),z0 +udaekubs k orce F. What happens to the force 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 origin3 uek k0iv, )bdz-sa+ual value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. m tgktr 70qwd v9zmu+29rs49a What happens to the magnitude of the force on the prazvq t 9k+u97m0tr2ms rwd9 g4oton 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. 9)rp bcr,rv ut jh,m fo5e)0)hWhat happens to the magnitude of the force on the first electron if a second electron is placed nex0 h,,rb)) oemr9chrvp )5utjft to the proton?

  An electron and a proton are separated by a d)(rpnketghv w6(+n7yb( ,mmoistance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the e ((ynro7vb (wkmmp+hn6 , )gtproton?

  A point charge of +Q is placed at the center of a square. When a seco *qko:95aqel xkr*jl* qkv :i v-5o1bpnd 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 corners of the square. What is the magnitude of the net electrostatic force acting on th -**eqlx*vbj :pr9v5q qlkoo: a 5k1ike positive charge at the center of the square?

  A point charge of +Q is placed at the centroi)im(dfhbur,flkz fbf )j) + m;8p5jz0 d of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's v0 zz r)f) bb+dlm8hfpf5f;(ji)ukmj ,ertices, 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 vertices?

  Which of the following is nbnh z,e*09ezb ot a vector?

  At twice the distance from a point charge, the strength of the el8cul;l1 w3d l:y1m iokectric field

  Is it possible to have a zero electric field value between a neg + zd1ljad/nh35gz(v jative and positive charge along the line joining the 5 3jvdhj+zdz1nga(l /two charges?

  Is it possible to have a zeroop8 c8loa3;xc )mdai( electric field value between two positive charges c3 x(a l )poca8idm8o;along the line joining the two charges?

  Electric field lines near psitive point charg76i mj8a v:fqces

  The electric field shown 7k+uy0anz/r30j 5*jsjkwj wk

  Can electric field lines intersect in ny )1fhs ldmya:slfy*;0eu94free space?

  A solid block of metal in elec04bwefcx w 0m;trostatic equilibrium is placed in a uniform electric field. Give 0 04bxec;f wmwa statement concerning the electric field in the block's interior.

  If a solid metal sphere 7. mlmsgthw3 *4 x44i2frxcxaand a hollow metal sphere of equal diameters are each given the same charge, the electric field (E irm xcxagst xh43w*f724.4lm ) midway between the center and the surface is

  A cubic block of aluminum rests on a wost33nws3 o (cpoden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's 33c3s(onpwts top surface?

  If a conductor is in electrostatic equilibrium near an electric c7t5k rxqxtqnimypiq6v +5;s;) ,a ub 8harge

  A positive point charge is enclosed in a holl)xz0+ 2 ecaqjtow metallic sphere that is grounded. As compared to the case without the holloaj zt )02excq+w sphere, the electric field at a point directly above the hollow sphere has

State three properties of con -6d 7d8voz/ pomz;xxhductors in static equilibrium.

State Gauss's law.

  The charge carried by one elect s,flw2ykm v5qj5 l/4mron 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 mtl.q tm:p0.4 c/ajb vtore protons than electrons does this piece of:jbtt al0.p. tcvmq /4 plastic have?

  What is the charge on 1 kg of prjv.)ft . l *njnxm7jk0 a./xkfotons?

  An atomic nucleus has a chi,9 /fvnvycd/ yu1hn3arge 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 -4. d )6twl lf3qx*njqsb 0lqyyq/52)+af0 mC, respectively. What is the magnituqqn63/52*qw ftl) s+ y q)af lxl0yjbdde of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between thwm +7iigxzd)a6em.kw3s*n p 8em is 1.0 N. What is the magnitude of the secon x n7mk3sgw.68 e+wii)a*zm pdd charge?

  Two 1.0-C charges have a hn4x;a v9 id yt*(aibv9q h4 gp+i,x;sforce between them of 1.0 N. How far apart are they?

  The force between a leczc; ;7h /ep$30 \; mC$ 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. If theyy ugh 4ddh;h04 gce.1d are moved to a new ;4 u 14h0gyd h.ddcehgseparation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC 25 )ita qucx,hvri2)rare placed 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 are the magnitude and direction of the electrostatic force which acts on the ,r)uqv h2xc2 i)rta 5icharge at the origin?

  Three point charges are plah 1xmjdgw )p ,i)v8wl/ced on the x-axis. 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 andxlp,m8 ihjgwd1 / )v)w direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the follm m4tugy7r5x f-(8,+hfy:fbjr cuz y/owing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC : ybfy-f/mz hcxj +7ru5g (f4 8,rmtuyat 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 of a square, hoz0*ocl07 hr 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 magnitzc7or *l0 oh0hude 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 = -1.0 nC is a3r tr75lru h5it (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wha ir3rtru7h5 l5t is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q0t ff61n4zub+ 4vc; cpo;wpwq2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at ;4 +o1;fccp6 wfutpw q4zvb0n(0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilat6sjl*7 8ur +bf3 4built)kwdyeral triangle which measures 30 cm on a side. What is the magnbw yj+6k4s3 tu7 u)lr*i8bdf litude of the electrostatic 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 9,ny(h. gc8s vx7*bmhluka1x( *ry y d)* svhmpoint, on a line between the two charges, would it be possible to ph(rym* d xc*gks8.mhb 97uyhv s,xv*) (nla1ylace 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 is at x w2g4cg /uou9v x-x/ qu= 4.0 m. Where on the x-axis can a third/g o2xcx9 guqw4 uu-v/ charge be placed so the net force on it is zero?

  Charge +2q is placed at t-x:59cx 1vvxf7 ky*pqq uydy3he origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force o*3vfxpudyqxvx y79:cyq -5 1 kn it is zero?

  A copper penny has a mass zthaj tn)l -6rh -)k5xof 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 m+x ct,3pyt n:the force of gravity by the attraction of a fixed proton some distance above it. How fa,tyx c3m:+t npr above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point byj2c 3y z45k3qy +cpmsl nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the cyjy 2l353pck+sz qm4 threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a chih0k4 8g e/it n.pe-qyarge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucy4ig hnqe/8 k0t i.ep-leus?

  What are the magnitude and direction of the electric field at a disuktd-vi7s1*ofh. jchz g*.*kq4 wvp2tance of 1.50 m from a 5 h* og1tkv7-fw us2i* .v4 kqdpjhcz.*0.0-nC charge?

  A 5.0-C charge is 10 m from a small test charg u oi3z+4dhj+i2ji+ ahe. What is the magnitude of the el++ h3h2udj+z 4ojii iaectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a sdb3peie(-.zjb j8. fumall test charge. What is the direction of the electric fi8.d(b-. 3puj ijfbzeeeld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of t+nvl,gg 0v:a rhe force experienced by a 1rvg g,lva0n :+.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are sepa exz1 rlyz4nc. s6w+*vrated by a distance of 4.0 m. What is the electric fis+ynzx 1erc.* 46lwv zeld at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark ojo39z ey7zawwr/ h*ui-:v u; tf a meter stick and a -4.0 mC charge is placed at the 50 cm mark. h:/9y vu tw* au -wzez7ri;jo3 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 and a 1d+hjf (/5 cm3hvzuiv-4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two chargmv hf1h jid5( ucz+/v3es is the electric field zero?

  Two point charges of +3.0 mC and -7qj 5vwip. ,5 pl3rg+q3 cy-wm,ymnvc2 .0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the elecy3qnv, p5wm- 2y3pcqv mw.5lr+c,j gitric field at the point midway between them?

  Three 3.0 mC charges are at the x8tha.3rg6n ), rf hv ;/imdxzthree corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of themr8vg)3/hx za, rih.n ftx;d6 square.

  Consider a square which is 1.0 m on a side. fb8x l94fj:e 3q rdt9w 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); -l4r jb dfqf8 xew93:9t3.0 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 placed op-55vwd( 2f+ -vy7 gzx:s vu9 eorqb0z co-bcin a uniform electric field. Whatogby- o fszoc0- (5c + x:urq5pw9vd7e-zbv2 v is the magnitude of this electric field?

  A particle with a cha.*gfceqblc/t+-axetpq-z (2 rge 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 mass4..b1tt n( t2h bjs wo+y3 ccmu,a8fij 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended?.t wobcb2itnac hm.y8 stu+(1j3 fj 4,

  A foam ball of mass 0.17wl zj(t (mk.gxd6mzj +fp /icy98ey-50 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric fimfyylki/zmz8w d- +ep( 7. c xj6t(9gjeld, 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. What is/nzo5yr ei y39u9vh u8 the magnitude9oy3 n5z8 eu/yiuh9rv of 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. Whavtp oiagz858 ee*hh7 spgq.r1)fct)3*o0c hht is the electric fi pg7cfpci)e5*)ghq .s08z* o1 ao htrt83 hevheld 6.0 cm from the center of the sphere?