State the law of conservatj02 +fcx; eb hp+q -n6abjlb-gion of electric charge.

  Is it possible for two p1j3fp +7szrhnegative charges to attract each other?

  Is it possible for a positive and a negative charge to aau 74i;th/iz rttract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod (uz q.-4col nlacquires a positive(l-4o.lunc q z charge and the silk

  A proton carries a

  The model of the atom sht9bbz286jbe fh h4b 0iows a

  A neutral atom always hascy66 ji):baxf

  An atom has more electrons than protons. The atom i(lh3 jrao)tkqbc(;0ca +i9 dzs

  Materials in which the electrons 71c zljb1cu+b 0)ct8kp/ag ysare bound very tightly to the nuclei are referred lgj p)k t+1zb781y 0c/ccbausto as

  Materials in which the electrons are bound very loosely t tfui 92+ bmcjzfr3.;co the nuclei and can move about freely within the materiaczu ;rftfij3m bc +9.2l are referred to as

  A negatively charged rod is brought near one e.ncz/a bj nyl z r310lk8u0(zfnd of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be char1. z3zb0ucfk8( rn 0ln/ lzyjaged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plac a 7n+dtr+s3 n5 v(dimu6v5 wjj,vxmq7eddvjwv5s+,v mntuq+3 ( d7j xm7in a5r6 near 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*7xm1sfxrp1 j charged rod charge an electroscope positively?

  An originally neutral electroscope is(+ y+s7vyolw evi4l, o briefly touched with a positively charged glass rod. The electrosco4s+ ov y+,el(ilvwoy7 pe

  An originally neutral electroscqi. -+xhzxg)uf 0p/dg2p xu v1ope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the e/v.xdp 1ux-z2 +g)u0hixgf pqlectroscope

  A positive object touches a neutral electroscope, and 58;wjb x:xb ibzapj38the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. zib5bbjxw;8a jx3p8: What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutralsy(n3xcj-i2z m mm6 (z metallic ball rolls straight toward the object, but stops before it touches-(6y m nz jx(mc3izm2s 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 fci5+db3t 4tpp:um*,bq3y gnnj* / withe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distanksxf.)et b;ng64n- xc ce d. The first charge is larger in magnitude than the second charn64f bxksx. e;c)- tngge.

  Sphere A carries a net charge and u+)vv5cafdd,5qo is 0sphere B is neutral. They are placed near each other on an insulated table. Which ,va)q5v0ddi+so f c5ustatement best describes the electrostatic force between them?

  Two charged objects attract each othv-t; q+4j+h4 hno rmcm6xy8qser with a certain force. If the charges on both objects are dox 6qs cj8; q+mh+-tymo r4v4nhubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert lddep73leh3ra8 o6/xmutual attractive forces of F on each other. If the charges are separated by a distance of d/ de83lal hpdx/3e76or3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the forw ns52+x4 ,s(kr pczgpce between them if x5g 2ws (r4+,spnzcp kone 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 to

  An electron and a proton are separatebbf ( v;-zvli)d by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placedblb (v; zv-i)f next to the first electron?

  An electron and a proton are separated by a dista dsodmz2.5wy (jav9f-nce of 1.0 m. What happens to the magnitude 5f2mdvywoda .jzs9-(of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whhcfjx-)f 8p66d9un :b wxsowi6:.gs qat happens to the size of the force on the proton if the es:6s n-9i.fxq8ww6 jbpcxgfd:u)h6 olectron 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 poiinmt ie2-m 7s+nt 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 pos2imt- +esni m7itive 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 c lj: 6q,riday7k9k2c9;uzb gventroid 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 dlkvy a7jr9z6 :kq,c2i9u gb;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 vect3 2 l3qx ys2u2/axukzsor?

  At twice the distance from a point charge, the strength of the m9kmq8w*cqk-v4 xp)kw,pz ; z electric field

  Is it possible to have a zero electric field value bepqevhn0 dueo, hf 7/05tween a negative and positive charge along the line joininp05ef oh h, qen70ud/vg the two charges?

  Is it possible to hav l d7ay h8v;bxzf8+1jce a zero electric field value between two positive charges along the line joining the two charged za ;l8y87+x1 fcbhjvs?

  Electric field lines near psitive point cv 3 puo-+wj )43tvnmprharges

  The electric field shoigk ak -h do1zh8o.f36t gp((mwn

  Can electric field lines intersect in* i 3vewpfe*3i free space?

  A solid block of metal in electrostatic equilibrium is placed ine i,(q 1e9yukn a uniform electric field. Give a statement con k,(uyi1een9qcerning the electric field in the block's interior.

  If a solid metal sphere and a hollow)l1nccf h d)+o metal sphere of equal diameters are each given the same chargocn1 hf lc))d+e, the electric field (E) midway between the center and the surface is

  A cubic block of alulcg+ o1j uqw,-minum rests on a 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 u- j+1lw,ocq gtop surface?

  If a conductor is in electrostatic equilibrium n+0re;w*;bocf zk,fj5d; qpmzb n .z 8sear an electric charge

  A positive point charge is encloc3lemcp *h o83sed in a hollow metallic sphere that is grounded. As compared to theole33ch 8p* mc case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of condybv) nva:y jw wmy5(9r3- :attuctors in static equilibrium.

State Gauss's law.

  The charge carried by one electro3l6 ) ,(lrfgncfvi ic4x 0me.wn 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. Ho t80gy0nj bq bj;fb;/tt-r- d3dlp8www many more protons than elec8q;0-d-tb;lw/tn3tr yfjjw8 b p0 dgbtrons does this piece of plastic have?

  What is the charge on 1 kg z;q*r7 zgitsfh c;m+2of protons?

  An atomic nucleus has a charge v6c)e; :m1 5 jplxmrxm3x6osgof $+40e$. 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 va9/dfz1/m9haq zh4jrklues of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between them?/991 hd m4j qzk/hrzaf

  A 1.0-C charge is 15 m from a second charge, and the force between :l55/m0d xbfhenli 5 xbz1np(them is 1.0 N. What is the magnitude of the/ 5x l:pdb0xlnmfn5bizh( 5 1e second charge?

  Two 1.0-C charges have a force between thu ancrm64*t+w fh(9np em of 1.0 N. How far apart are they?

  The force between a 4rma-sm62 ta0l *qema $30 \; mC$ 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 forcep 3)ar2r h4 tmy85ukdm. If they are moved to a new separation of 8.0 cm, what is the electric force between t3m8ukm rha) 42pdyr5them?

  Three identical point charges of 2.0 mC are placed on the x-axis 9ldk6vrx5 fbyof :1sgp,h(3u. 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 electrosta3f56:9(hs fulbkydx1g, vrpotic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0v-wz0dbb / p,udc 6tzwe*3u)k 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 acts on the charge at 63ubdw* zu,/we)btczp0-vdkthe origin?

  Three point charges ar m9 znag4d4yj/bkc/j) 8 rd,kde located 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 force on thjdgkrzj,8dbadcym 44)/ / kn9e 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a svk172mt9:wtc yqxge+/wy8sw(fa od 9jv; tv*econd 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 e at gtwv (yws yom*d+ ;c qvxt2f19jk:wv/798charge 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); Q3 =d8(g dtgy so/+0gxuh d x-.h,n 5.0 nC is at (0, 0). What is the magnitude of the netgx yh dos/dgx+ t.dh(n0g8-u, force 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); Q3 = 5.0 nC igxj+cz9 jmq/ 3s at (0, 0). What is the direction of the net force on the 5.0 n/jq9 j3mzxg +cC charge?

  Three identical charges of 3.0 mC 9ya:y ipb+6qr are placed 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 car9:+ yp 6bqiyharges?

  Consider point charges of +Q and +4Q, which are se g+5t gjl/ep-8tza +axparated by 3.0 m. At what point, on a line between the two charges, would+g5j+a8/ xel -pgtt az 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 +ntg33hkis h2 ,g:6tcs9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge bec hsgt s g3kit23h,6n: placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q il,u5t 6n8aoq+zxe 9qds placed at x = 2a. Where can a third positive charge +q be69+u lodqez8txq5, na placed so that the force on it is zero?

  A copper penny has a mawb97z 7p5n :lqh2lhw 8+uln ori0tv6gss of 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 thye7g x0 p;4pyse force of gravity by the attraction of a fixed proton some distance above it. How far abovepyg 40yex7sp; the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by 4d8gv jov8u-f nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the a84vfjgo- d vu8ngle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is t cn)dln bskz;- kzx+-:he magnitude of the electric field;szl-kd-c ):nknzbx + at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric 4bdwax ) 1w4f0podi. vfield at a distance of 1.50 m from a )wvd1 pbdx0af4 ow4i.50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Whajr0l/hi-b rc(8yb ff. t is the magnitude of the el firjc(0fbbh r .-l8y/ectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Who*jnuy;yn7naogv3 7b/)n + lb4f5 jlhat is the direction of the electri ;y g75nf7)bhnlj4bj3+vnna l u /y*ooc field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the izdm1a(3/;5xq : tdbh /*shax6qq dycforce exp6; idmaqcy/h qas1xtq:*d (b x5h/3zderienced 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 sep6, bj;,l*f2 e bbo2r xor)8gns9nzgtmarated by a distance of 4.0 m. What is the elect2xm f)o,*nnrt8 ;s6lgbegb b o,2jrz9ric field at a point midway between the two charges?

  A 5.0-mC charge is placed at ti0r x3f;vk cx8 4vlmq7he 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at t8 k 0;qv4fc3v7xmixrlhe 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and h fq/g*c sg;:za -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric /hzf* g;qcgs: field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.xgcb .quyw9 2kd cu*i0z :qx)420 m. What is the magnitude of the electric field at the point midway between th *cyx cu)izxquk b4q w0:g.d92em?

  Three 3.0 mC charges cfs ipwq;crw7sf.i -u;2 1 e5 ziq/u7lare at the three 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 thew cqiisf-s71 qecw27; uufl5/.z ir ;p square.

  Consider a square which is 1.0 m on a side. Chaaud95zjvdo pbp6a81k17 yb; erges 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 (1,7bapea uz bdj1koypv ;d68 195 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 charg 9/hyrrv.a0ji 9ocw u72v(+(m kopzp ne of 5.0 mC when it is placed in a uniform electric field. What is the m2 /ncappj. +9iv orv(zw(m 0ruo7h9ykagnitude of this electric field?

  A particle with a charge of 4.0 mC a9/wk ukr o-fkh/w0x4j) 4xgphas 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 qo 8m+rfc 7o hut,l n39y4yr7t tuti)1mass 0.120 g is placed in an electric field of 6000 N/C pointing downward. Why q7y, )omrnl+t t7t4u1ci39outhf 8rat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.gr89 j8tsa9w ruy7,eu ao1e 5w150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended aga 9wat errje19g8, 8oawus75uyinst the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chygey liwacc+927upc:/ 2lg+ms xpk, 6arge of +2.0 mC. What is the magnitude of the elxg 7y l:sgaicc2/p+lmc 6kw2yp9e, + uectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a cdh8jo wk/,s*s(xf pg4 harge of 3.0 mC. What is the electric field 6.0 cm from the center of the h*k gfxsp os(d8w,/4 jsphere?