State the law of conservation of electri:l( bcnmto/g 7gx.ik.c charge.

  Is it possible for two negativeus4z1 -ngrrj-3lzx,a charges to attract each other?

  Is it possible for a positive and a negative charge to attract eacp-c qw(gc13c -msuulwbr z./2h other?

  A glass rod is rubbed wit8 vtg(-xu jz-y 5ub 6.wrs zf.bny(;kvh a piece of silk. During the process the glass rod acquires a positive 5-(txg8j.zuv y n;srb6wkb-v(fy .uzcharge and the silk

  A proton carries a

  The model of the atom rv+9: ntc8jfgshows a

  A neutral atom always has )-m1v e rwfegj.r1f3c

  An atom has more electrons than protons. The atom isgcq;m+j ruz z2p:9;t x

  Materials in which the electrons are bound very tightly to the nuclei are refer-0exjhung kfowkayl - 0/59 :tred tutxogawk f:-n509kye0 h/- l jo as

  Materials in which the electrons are bound very loosely to the nuclei and cak( 2sc pk-j-l* 5mifayn move about freely within the material are referred tm(-il afkj2p*- y5kc so as

  A negatively charged rod is l)ifm,0y kxb: brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod wk0:byfm ix,l )ill be charged

  Sphere A carries a net positive cw5d)k va-udh: -w,idmo2wig 8b7x:t jharge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touche hvdb i5a-)d 8jk:7,xuwd:o mtgw-2wid with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivz3sk(age+po ll 3h(t- ely?

  An originally neutral electroscope is briefly sybc)air30u2 touched with a positively charged glass rod. Thu sy3 c2rba0i)e electroscope

  An originally neutral electroscope is grounded briefly while a positively chak y v4ttxe 8q*xlo;iket0.8l2rged glass rod is held near it. After the glass rod is removed k80tttelk 2oe4y*xq liv .x;8, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate.d4*alrr :l6mr Then a negative 6rl*:rdr 4lmaobject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object-c k0qhj 455 :qqgpinr is placed on an insulated table. A neutral metallic ball rolls straight toward the obje5j hi0q g4 rkq5p:q-ncct, 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 Coulomb c0rq+igm+no pf a.fu8yn. go 1+onstant $k$, which appears in Coulomb's law?

  Two charged objects are separated bdqqk0y/ty -:ljwi/pk/(fg jez4m7 : ay a distance d. The first charge is larger in magnitude -/: 4 pey//:0tal7 gq fm(zjywkqkid jthan the second charge.

  Sphere A carries a net charge and sphere B is neutral. Tmdijh*lu 7o88x28lwr*r/syq hey are placed near each other on an insulated table. Which statement best describes the elec88ou *r/w q7*hdj2lxlis 8mrytrostatic force between them?

  Two charged objects attract each other with a certain force.t(. l:ao -n3 rmkbbe0v If the charges on both objects are doubled with no change in separation, the force betweeb(nt -k0rvb3oa :.le mn them

  Two charges are separated by a distance d and exert mutual attractive forces ycfo/4j -;mev of F on each other. If the charges are separated by a distance of d/3, what are the newm 4f/vj; oyec- mutual forces?

  Two charged objects attract each ot 42sdyxi.jno9 her with a force 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 original value? The force is now equal .9xjn iosy2d4to

  An electron and a proton are separated by a distance of 1.0 m. Wha 8y31p*u cah+vyxg :rjt happens to the magnr*yu 1+xcyj vahgp8 :3itude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton atggavr:cx6pvq p9-sx)/93q: ) cjuhpre separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a secon :)ucapvq3jvp9x hc9r 6 xgp tsq)/:-gd electron is placed next to the proton?

  An electron and a proton are separated by a distance of hc vn owak2,ur/jf td fmq*g620 i*17p1.0 m. What happens to the size of the force on the prot7* ,1v*g j0 ffrau pkmn t2i/6dw2qhcoon if the electron 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 pointfiip2m7g :u w8-fi7 tt 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, ident uwif28tmt:i-7gi f7 pical 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 trianup s,*2e8omiw zx+e 0rgle. When a second chxzep,ue m 02i8*r +sowarge 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 vertices?

  Which of the following is not a vectoa: x7p06acdvc r?

  At twice the distance from a point charge, the strength ohlb (o.(uj13e byg:u of the electric field

  Is it possible to have a k 3p:ukvoy; w2 j/;ob/ctgy3hpd8e,rzero electric field value between a negative and positive charge along the ,pdopov8r3 bcj ; /tk wyu3/khe;g:y 2line joining the two charges?

  Is it possible to have a zero electric field valuv+mtw)6x0g9 xmljxo / l56if ke between two positive charges along the likxwmmi0/ov 5) lx+ 9 j6xtgfl6ne joining the two charges?

  Electric field lines near psitive point char lblaw l79.zf*ges

  The electric field shpo 87 3oa.ks2:6 3jtt u4y wgfcwpiq)jown

  Can electric field lines interseone8 4qrn uwv 7f/6z3ury6d;vn2,u y oct in free space?

  A solid block of metal in electrostatic equilibrium is placep. s* g;nx1oiljl2 z ea-5z(lbd in a uniform electric field. Giveezblnp 1lxij.o *-2 5a;(sgz l a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal 3gkbd/7+ez;t htr1zm 0y+ubre+enh;sphere of equal diameters are each given the same charge, the electric field (E) midway between the center an1e bt ; uh ztknm3edg+ r+7;b0h/er+zyd the surface is

  A cubic block of aluhx3 9/k zr, fkz33yuscminum rests on a wooden table in a region where a uniform electric field ik u/z9c33 zfxs, khyr3s directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilc;y5d s 1.z9/daty kplibrium near an electric charge

  A positive point charge is enclosed +l:zvm0ko +:uykv yh- 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 hollow sphere hasmo:u 0-lyk+vkvyh :z+

State three properties of conductors i*;-knsmx, 5 ,iznf hkaet)(mhn static equilibrium.

State Gauss's law.

  The charge carried by one1xxt 6/lgajhjv7*dw qr /(ipqzf.7b; 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 prq:7zyl5snpr*m(h l5o m cx 0)dotons than electrons does this piece of psh):7ponyxqzr (d * 5mc5ml0 llastic have?

  What is the charge on 16/c1b iv fd,ox kg of protons?

  An atomic nucleus has a :aiy+4f jeax1 4up kg5charge 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.h+i .vx, 2yn.5cqw :fqs6b/ zc: wrthc0 mC, respectively. What is the magnitude cxct cw bh.y w qn.+ h6q2:vs:5/i,rfzof the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 ,4ub-zi;q/yo o 00l)qkcxisb - v,qflN. What is the magnitv/f)4 yksozul0,- q- ;cq o,xbbq0iliude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N.tl6l7krwf0w1 How far apart are they?

  The force between a -o(aq nextu4k 6.yr +j$30 \; mC$ 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 l) w z;bijnq5,tmy6y6 1.0-N force. If they are moved to a new sepaz i6yj6b qy, mwt)5;nlration of 8.0 cm, what is the electric force between them?

  Three identical point chy1pu2wys nu65v -/aemarges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second tosn6u -my2 au5v/ wepy1 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 y fszr3*q)p.b h wwlft.t 42v*placed 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 and direction of the electrostatic f . lzy) .btrqw*wh2pst4*3vf force which acts on the charge at the origin?

  Three point charges are located at thesb sq4hlgxu . 40l13of following positions: Q1 = 2.00 mC at x = 1.00 m; Q.0sl1 u b43qx4 solhgf2 = 3.00 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 centebddv 6 -iaq lz16,/uyzz8dwy8r of 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 charge if a third charge 6vib y,dl1az-/y6 qd 8zud8z wof -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); te+5epi sn78xQ3 = 5.0 nC is at (0, 0). What is the magnitude of the net fo xte5enis8+7 prce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m)3kpn ; tg+oi ti9sebxps)6z4); Q3 = 5.0 nC is at (0, 0). What is the directgtpxepb n)o3 k s9)46;siizt+ ion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices fgv aad7k3 g,p3pxb6(d,dby 9of 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 charges?dbvpdg39(ax7f pgkd6 3y ,b a,

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what*l8 fqapio 0e/ gis:o8u5yv.r point, on a line between the two charges, would it be possible to place a charge of -Q such thati*:fleu5r .0a povg/qyi8 so8 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 = 4.0 m.1f +ql7jm 97:lj-w 0/51du2k wmd jhyqxeb rhq Where on the x-axis can a third charge be placed so the net force on itw:-10uy1 frd+hm/2qwk5jlmxjqqh79 bj 7del is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where cano6t ; d7mzzfl0 a third positive charge +q be placelztzd; 0 f67mod so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tot -gwh erv+r-,ual 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 the force of gravity by theyg 7iv*.ra v84 m)gyyu attraction of a fixed proton some distance ab 47)ym. y8*vrivygaug ove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting top,qe3c f7p2jm 4sxm 0hreads which are 30 cm long. Both are given identical chars,p4o30mc7q epmj f2x ges, 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 hasdj-iq qu5i tr7hf17 :f a charge of +40e. What is the magnitude of the electric field at a dist7qf1j7r-qhft:5 id uiance of 1.0 m from the nucleus?

  What are the magnitude and direct 6 uz0j) c9jw*o w9bogluvw++fion of the electric field at a distance of 1.50 m from a 50.0-nC chargewfc+*9jo bv) uw0u69j wg+loz ?

  A 5.0-C charge is 10 m from a small test charge.yda1) n5s hpa--w wl2j What is the magnitude of the electric field at the location of the test cha 5wlwsapn-ah 12j)y -drge?

  A 5.0-C charge is 10 m from (y* a*7snez fka small test charge. What is the direction of the electricyf *(7k *enzsa field?

  A 5.0-C charge is 10 m froo(ql5kh. po .mm a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location oh mo5k( o..lpqf the test charge?

  Two point charges each have a value o;lg(0+qzu isy4 zfb8 yf 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two q+; zg(bus f8l4 zy0yicharges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick an i.cnji3 (.vt0 m:hei;nrd q)nd a -4.0 mC charge is placed at the 50 cn.ivh e;nqr):t d j3ii0 (mcn.m 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 and a -4.(9ni/ x l7d :8iwuukhw0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric fielnx9il/8uhki:w ud7 (wd zero?

  Two point charges of +3.0 mC and -7.0q6bxf00tzs .b mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electrt.zbx0 s 0qf6bic field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a s/+ fp8 whyntg:quare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find ttn p:g8h+y/fwhe electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed aa8 8td jf 50)bdjxpeauj l/2(yt 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 (db8j /t2x fja80p)yujlad5 eis the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charghn1;1unm r8 ;x d)c*emsdq-pi 5prh-he of 5.0 mC when it is placed in a uniform electric field. What is the magnituder 1qh8-n5-drixud*s1)c mphp e;h;nm of this electric field?

  A particle with a charge of 4.0 mC has a maf 2ty69a1w gdtss 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 8h7waulpa u0(z9qd(;hbqm 7 pg is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be8(ah;wplq h (79uuq0pm 7 zbda suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Thuq:)3,rtk oo) r k-aqoe ball is placed inside a uniform electric field, and )o- qqraut, )okrok3: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 th ze4kb.z5v :r8lcq7y(7bol b5 j1pb cze magnitude of the electvb rz5 z:yzc (5 qlbkoe1b8b.lc7 4jp7ric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 1sl34fntzgo ;cyrnx t2.+sf 33.0 mC. What is the electric field 1tsx2 g3 fs yl;z34fncn+tor .6.0 cm from the center of the sphere?