State the law of conservation of electric chars 2ng: *p,cuvfznft2 6ge.

  Is it possible for two negativfx9 o f*vk7j pb42h4pee charges to attract each other?

  Is it possible for a positive g( qc( )sobfm-and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glassle0;t9*nsop-4ez ,hhk)clnm rod acquires a p pz*lnm)cos;,e th94 0h-ke nlositive charge and the silk

  A proton carries a

  The model of the atom shows u gtjxdnms+d n)(t5d/. ,z:v s lszgj7w6f72ga

  A neutral atom always haso8-ny,g 07 tcghb.hfg

  An atom has more electrons than protons. The atom 9sw tw1. qdthhd0 mn.u,bq(2 zis

  Materials in which the electrp fbq/r5k -kge50yj1k ons are bound very tightly to the nuclei are referrbe05-f1p/ykkrkjg 5 qed to as

  Materials in which the xipt06l7 j9f)a llagu,9cw,b)h k;q xelectrons are bound very loosely to the nuclei and can movexfj 9klct a7w)09,,agi) lx;bp6qu hl about freely within the material are referred to as

  A negatively charged rod is brought near rql. *g w:fo*w+ ,glieone end of an uncharged metal bar. The end of the metal bar farthest fromiqg w:ler. g of*wl,+* the charged rod will be charged

  Sphere A carries a net positive charge7 wb8h (wxr7dn, and sphere B is neutral. They are placed near each other on an insulated table. Spherehw(8wx 7 rbdn7 B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively2z(jsde;4j6wmg p5 az charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a poe vi /7zrot7p,sitively charged /e7z,7p tor ivglass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a posis(t+ogti0exe8w)l+;3 m ca zgtively charged glass rod is ht ;wimg0+ gxos zee )38t(la+celd near it. After the glass rod is removed, the electroscope

  A positive object touches a neuts-5 bo:n j7 abpcszf804ogb 8jral electroscope, and the leaves separate. Then a negative object is brought near the5pfn8s 8bc j 0-zj7sog4oab:b electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulat6 j4hotao+tq0ju* imz(-1 fcb ed 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 neg tz14ib0u +toc(h*6oam jfq-j ative 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 Coulo 4/bc8m2tvuh4xvk r+s2 kjnx 1mlb1j+mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger ivd)6b6n(bcw u hkeb9duy, /:ofg+u 0 mn magnitude than th,w+(): g0bukvbdy/u9on 6mh6b d cefu e second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed neo55y xuyn2kd2q sf c-to8j+ d9ar each other on an insulated table. Which statement best n-jy9q +s2d cko28yd5xf 5uot describes the electrostatic force between them?

  Two charged objects attrh+ia 8h o-4d wlz7b,i,fpbe b.act each other with a certain force. If the charges on both objects are doubled with no change in separation, the force betweeb+.az-bp4hlwo f i h8ieb7,,dn them

  Two charges are separated by a distance d and exert mut;xt: tw37 z)5beneryfual attractive forces of F on each other. If wb3e: ;zr7 5tyxetn)fthe charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attra:xi ewt5v3c i,ct each other with a force F. What happens to the force between them if one charge is ,5wx:v3 teiicdoubled, 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 / jyz-ey-woslib8 )x3are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron i- w ol/s-yy)e3bj x8izs placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens to*crlf,nj hvi0u 8- lcb*8avv3zbqc6 5 the magnitude of the force on the first electron if a second electro5 vqazh*j , c*n680u3brccl8 vibl -vfn is placed next to the proton?

  An electron and a proton are separated by a distance of 1.x0 ex40ts yotk(1m sx-0 m. What happens to the size of the fx-xt4o( yes01xt 0sk morce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squ )d4d5 ngwppnwi3(c:iare. 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 corners of the square. What is the magnitude of the net electrost5d(c wn d34 gp):nwiipatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid o)ox./vkyu 1-do*b yh xf an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostd.x1xy-yokh/ov)b * u atic 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 bqrx c)-oy1./ w gapf+l,9tqta vector?

  At twice the distance from a point charge, the strength of vyc. 8j3mek6 if 2uka4the electric field

  Is it possible to have a zero electric field vaz5fa hf3c1yg3b)u kq 2lue between a negative and positive charge fba )cu53fqyk ghz231 along the line joining the two charges?

  Is it possible to have a zeromzkzk;s*0u3 v jyb6(m2h/o l x electric field value between two positive charges along the line joinimy2(xj h 3ms6kv b/uk;zl *0zong the two charges?

  Electric field lines near psitive point chargvk g/yr hg,+b*es

  The electric field sho 7eb91ohpra0 ag27qlswn

  Can electric field lines intersect in frn)m w fy:qs3n2now-w7ee space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform e:2o: oq-u74uape fcsvrtyga :8nv+ ;electric field. Give a statement con no+7r24yo:sc-aafe: eqgv ;pvuut :8cerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal :9yk emk ;v4ctsphere of equal diameters are each given the same charge, the electric f vyeck ;4:mkt9ield (E) midway between the center and the surface is

  A cubic block of aluminum rests onwl;/lg+u e pgk4pl;v ) a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the cvpu;) l+lg4ge /wp k;lharge on the block's top surface?

  If a conductor is in electrostatvf0fcf zkjx yn.- /9yrbf+ars4:l *)a ic equilibrium near an electric charge

  A positive point charge is enclose- o z*b8wsto0sd in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point dir*-os8so bz0tw ectly above the hollow sphere has

State three properties of conductors in nv5/ll3;j gv8fq 7 bslstatic equilibrium.

State Gauss's law.

  The charge carried by one electron i 4eu t(1ay-tows $e = -1.6 \times 10^{-19} \; C$. 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 p 3muxeb0rz(g dx:6ab: rotons than electrons does this piece(6barx0 guz emx3:: bd of plastic have?

  What is the charge o h*hj69vqi p2/-dz jqqn 1 kg of protons?

  An atomic nucleus has 1 aucc 7q4am2ea 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, have charge values of e5;+ti 4oz9 *z 2fijsmaey8b+3al:t cv8kjky2.0 and -4.0 mC, respecti o s*+eb :a8j ;cy k2 yatf8z3mkze9+j5l4tviively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m froy eh 3y44ldocx*z: :wwm a second charge, and the force between them is 1.0 N. Whal3ozdhw:e4wyx4:cy * t is the magnitude of the second charge?

  Two 1.0-C charges have a fortw+ bje+yy-my yi 3 z46pal1b -td*5wjce between them of 1.0 N. How far apart are they?

  The force between a 3a c52wjk z6 wi;z55crjjcdq3$30 \; mC$ 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-Nu+ze 6so od.p 5:gdg.j force. If they are moved to a new separation of 8.0 cm, what is the electric force between thz.e6o dd+:sg5jg.puo em?

  Three identical point charges of 2.0 mC are put.qspl7gz48rxyx( t u y.t);laced on the x-axis. The first charge is at the origin, the secos.yg ;ttxryuu.) (zx8qt4pl 7nd 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 swxsf diy4d-.n ru27 2 /zqggws*u2t7 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 force which acts on g.rsxyw/wdstd2fu*q2s4n7i 7guz -2 the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x =npdop.:e5ql 1 ip3/v-j4 qko h*1w9rhxzi/aw 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magno i1qi /oeh jax:kp9n.qr-l /531 wvdhp4wz* pitude of the force on the 3.00-mC charge?

  A point charge of +Q is csj7 5 rx+dc6jplaced at the center of a square, and a second point charge of -Q is placed at the upperr 6djjccs7x5 +-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); Q2 = -1.0 nC is at (0, 0.10 m); Q3qelw 71-nsy u1 = 5.0 nC is at (0, 0). What is the magnit-1u q7 le1ynswude 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 at (+ryg(s sj *l-l0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whag s*s-ry(l j+lt 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 eri4l(g8zlrr (g0 dx/(5jhvug quilateral triangle which measures 30 cm on a vxl 0 i8lr4d/r(ghzrg(jug5( side. What is the magnitude 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 (cpwu,i ozt8v9 db)hjeld4w gcl z2)7,3gd t-m. At what point, on a line bez7gw-c,thltg 4ljio) u dd,wdp(c 2893z b)vetween the two charges, would 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 +9.0-C charge q 2k vj/3m o7u lzas5r:ed-hh)pa40ajis at x = 4.0 m. Where on the x-axis can a third charge be placed so the net f/a7:3als-h uhm)ae k2j p54dj0oq rzvorce on it is zero?

  Charge +2q is placed auwls2 ci 4ta-t1j)v pk o8z+9vdm: i3auq60zet the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so thas0a 6ji-i)d1uz2tztu 3v4cm opk:wq l ve89+at the force on it is zero?

  A copper penny has a mass of 3.0 g. A o.f uw4hnkx nq/f058qtotal 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 gravie4.ynsm sl: fwi-v(5w ty by the attraction of a fixed protoes:w4.f w5vlm-i(ys nn some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a r tiplc-)c(.a 0gze y-common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the eleig-r a0y- .(czp)tcl ectrostatic 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 magnitqxac s :/pqs18 4b7oxexp-lp .ude of the electric field at a distance of 1.0 m from the nucleus.pq7 8xa/l1ps spc4o-:xqb ex ?

  What are the magnitude and2h.x3o9tk 9hek2r vlh wx8 2zt direction of the electric field at a distance of 1.50 m from k9k22xtx8 rw23vo hzl. e thh9a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of pk ;z k-yrj )u,o(iyx0the electric field at the location of ty0 z)oxpyk kiuj- ;(r,he test charge?

  A 5.0-C charge is 10 m from a s q9d.n p49zxlbmall test charge. What is the direction of the electric fiel4z nbl9pdq9.x d?

  A 5.0-C charge is 10 m from a smx oq(-g(.y q4f hry;wtall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at tf -ryoxy4;w t(q. hgq(he location of the test charge?

  Two point charges eachn3w0ex 2c3 tkv have a value of 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 charg2env0wtk c3x 3es?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charge3) ;z; oqb2uipkat; uo is pla;) okpau;;qoui 32zt bced at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is plac/t:k.- ljzz 5tv7fiesed at the 0 cm mark of a meter stick and a -4.0 mC charge .vifjzzs /k e57t:lt-is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x q6p8xvufh/ p/= 0.20 m. What is the magnitude of the electric/6pup8xf/ vqh field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 w6tvh v +1d 3vtv-er0npx( w(wm. The last corner is occupied by a -3.0 mC charge. Find the electric fvvrn -v+pth 3w0w6((xwe vd1tield at the center of the square.

  Consider a square which uv7 od9cso/y g) w ya5*yth,h)+m6gxjis 1.0 m on a side. 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); -3.0 mC at (0, 1 h w dj/7o,y*)yomgu5ya hc)tv 9x+sg6). 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 ikzof ( ff(am37 o5b,lfn a uniform electric field. What is t f57f( ,( mkffzbola3ohe magnitude of this electric field?

  A particle with a charge of 4.0 rc x1q 1mfu8.amC 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 7xr i34rs3 g;8ifjjkp0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must 3sk;ig j4xpifj7rr83 be placed on the ball for it to be suspended?

  A foam ball of mass 0.15niqhttyrm*-- puh6jc( dc+ )0a.2ejd0 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. Wdy- j 0cm +2qu nhi)e rhaj6(t-c*p.tdhat are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. g ,nfgolg5-t(pe2 55cw g 4ikl What is the magnitude of the electric field 5.0 cm from the sp25nowg-iletg (glp4k f g55,chere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whc9) s8g0eulbf at is the electric field 6.0 cm from the center of the sphere8l )s9 f0ucgbe?