State the law of conservation owqyrdb3a ;p2 +dyno- /f electric charge.

  Is it possible for two negative charges to q6ltf 8;s xem/afjj3j dd(8cat;(u q-attract each other?

  Is it possible for a positive and a negative charge to attract each u;fz8bqezbv-a d5a59kj6 a;g other?

  A glass rod is rubbed with a piece of silk. During the process the glasya9vgk0m 0q4 jt ek/5is rod acquires a posiyevgaq k0 mk /0j49t5itive charge and the silk

  A proton carries a

  The model of the atomv4:8ug5;gza/lh 4s luam+e vq shows a

  A neutral atom always /lf be7 :nnf2ohas

  An atom has more electrons thaco4 w3jthu98nvb4 oy,n protons. The atom is

  Materials in which the electrons are bound ver kz gz63jg pad.5n4xt+y tightly to the nuclei are referrezdp 5z+nk4g6jg. a3x td to as

  Materials in which the electrons are bound very loosely toid :1b u4ue2qcbgx:tc:,sh l2vf n:m 7 the nuclei and can move about freely within the material are rl:b :u s,:4v2emghq7f: inb ucx2t1cdeferred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. i/ww7s8hx( 7vex +nfjThe end of the metal bar farthest js8hevw /7x+(wxif7 nfrom the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is nlo;o4cwf-wfdnox* )t- ,h o,u eutral. They are placed near o,)x;4-,u fo nwfht cl-*o odweach other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elecv-;kt:uika2 3 h (cqqir-y1gatroscope positively?

  An originally neutral electroscope is briefly touched wym )f u(;c3uak+qup (bith a positively charged glass(uf; mqpayc(+u 3bku) rod. The electroscope

  An originally neutral electroscope is grounded briefly while au0p7nm ,wcqj* positively charged glass rod is held near it. Afp7 j*qnm,uwc0ter the glass rod is removed, the electroscope

  A positive object touches a neutral electros0nc d(rt,uie0w(si:;*pf,/qehw mc i cope, and the leaves separate. Then a negative object is brough,tmq(w*ce:rciiws, /edfh(0;0ni pu t near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is cjaz rl z k,co.t0m03*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 firsoktzc3* rz0aj ,.0mclt 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 o4sljimg9h e p06/e.avktj 9:nf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects jh7amd6 1,zj *blftz1are separated by a distance d. The first charge is larger in magnitude than the second charg7zj1j t6lfhab*d,1 mze.

  Sphere A carries a net charge and sphere B is negh+/ kvy(av+zlns 7vspt3i 37utral. They are placed near each other oi3a73vsn s ptv7 zk+(/ghv+yln an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the cz1:s zpp s/pvf;6, wahharges on both objects are doubled with no p1zz/;p:wa ssvph f, 6change in separation, the force between them

  Two charges are separated by a distance d and exert)iot( yt)8oz3fma u43zq:wp l mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are tht)4q()uzo8 : m3iwy3otfz lpa e new mutual forces?

  Two charged objects attract eachvhm,0 d e-f v+zjje8)r other with a force F. What happens to the force between them if one charge is doubled, the other mh- vfdrej 0 e8zj+v,)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 separated 5 )a/5 yc t6ilaqyck.:j 0nirvvfa/;l by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the fiay05avcr;k :q//cij5ti yl afnl.v )6rst electron?

  An electron and a proton are l dkhv3+zhb69e 2q1sd 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 the pdk e26l+hb93vq z1hdsroton?

  An electron and a proton are separated by a distance of 1.0 m. What ha*vylo cw y1n85ppens to the size of the force on the proton if the ely o8 vlwy*nc15ectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squac;-2tr/ )ei zvd jfc5r .i1ddjre. When a second point charge of -Q is placed at one of the square's corners, c 5rr-dtvz ;ji.c2jfi1 )ded/ 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 equiladzt y m717-eoa,*b8 slcje7fjteral triangle. 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 the force that acts on the center charge due to a third charge o df 1l7ybs,ecjoz*mt e- a7j87f +Q placed at one of the other vertices?

  Which of the following u i8t+ ./wemneis not a vector?

  At twice the distancav6tw(l ;y1 kf3kxs q4e from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a h n: c6id2fgt,negative and positive charge along the line joining the two c6 : i,fng2cthdharges?

  Is it possible to haveq9apv2nsud ( r, 7 s;mtsk0+/fpm3ttw a zero electric field value between two positive charges along the line joinit+7 t/ m,a; s(m9nsu23tfdkrwvp sp 0qng the two charges?

  Electric field lines near psitive xn jeb7w*(j2 qpoint charges

  The electric field sho )d/jbjxxz*+yu icx /2wn

  Can electric field linjm hxpt/+hz d-ws42p *es intersect in free space?

  A solid block of metal in electrostat7 f-nh9woir;t 0 d+tn w:lfby5ic equilibrium is placed in a uniform electric field. Give a statement concerni0l t5 h97wfn-rnoy +;wdb: iftng the electric field in the block's interior.

  If a solid metal sphere and a hollow metr a-a7* .;nqjrjs+u pw 6b1rlzal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and. -w ajp6rrjqu ; lanbzr*7s1+ the surface is

  A cubic block of aluminum rests on a wooden table in a region where a u -h;u bgqwq+9(,sdvy h rb+4kkniform electric field is directed straight upward. What can be said concerning the charge on the blocy-kb 9drh(,4w quqh v++k;gs bk's top surface?

  If a conductor is in electrostatic equilibrium near an n1lx8jww 9zu ypnk ,(-electric charge

  A positive point chargj. 6enchc)ksp0 6s2nij ( bkn/e is enclosed in a hollow metallic sphere that is grounded. As compared to6ie.)/2 j6j(ns k pnkcsn0 bhc the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conducto (p8 w3lpym5kvrs in static equilibrium.

State Gauss's law.

  The charge carried by one elecaboi112tryio c2g -r9tron 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 protons thc 1142zxli kmfan electrons does this piece of plastic have?l fxim41k1 cz2

  What is the charge ona74 tq/qm h/:ni k8ada 1 kg of protons?

  An atomic nucleus has a charge oume zn5qro+q nbn+;4)*;1on4irm otaf $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, havkigej dq (0-w8e charge values of 2.0 and -4.0 mC, respei(gdk 8w 0-eqjctively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from aq:4svg-cjr9 z0mcv0 tkd :a *d second charge, and the force between them is 1.0 N. What is the magnitude of40gc-jz v rt:09 mkasc*d:d qv the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are th(6 du (jmkme(em+a54lh m)pqzey?

  The force between a 4h*cnj7ix +rl$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienc h*gv6p2gz0 ea,h )m(+2vm2mhlgj jrbe a 1.0-N force. If they are moved to a new 2 mamvg06 em b (hl),zh2r2hj j+gpvg*separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2 -: vl(mjw6eft.0 mC are 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.jv fe m-wlt:(6 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-axis. A charge of +2.0 mC is placed at xr :/m5z6wte xthe origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC a/5me x:t zw6rxt 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 located at the following positions: Q1 = 2.00 mC at x =;ysymykm:h. v b9tt2, 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = vkyb.tsm9 th ;y2m:,y -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, and a secondk/kk56 1vkb ic 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 of -Q is placed at the61icb5/v k kkk lower-left corner?

  Q1 = 6.0 nC is at (0.c t* 8k*daj5wfgv x4.x30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on th*jc fxtvga85 *.4 kdxwe 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m,ksvzql ur:+ 8mo.vk.7dpj 0k- 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force d7pv u rk8kl.o-.zsj +q0vmk:on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verv piw349kp +gbtices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostaticgv kppi9 34wb+ force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated xxjpi+s 7a/-l by 3.0 m. At what point, on a line between the two charges, would it be possible to place a cpai+sx/ 7x-ljharge 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 xiu*7y7)yc 18ltf a( dfjd- tveo) u.jp = 4.0 m. Where on the x-axis can a third charge be placed so the net.doa1-c fji87e p)7l dvyj(yu)f tt*u force on it is zero?

  Charge +2q is placed at the origin and charge -qre ; ib.ml3ok- is placed at x = 2a. Where can a third positive charge +q be placed ;lkmoi3.bre - so that the force on it is zero?

  A copper penny has a mass of 3.0 g. Aa/( ,3 oex+/pmr audwo 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 the force of gravity bv 9t1y 0p)-wa(,atprg5d ss:u k rmhu3y the attraction of a fixed protor1w5:ts augak0 ur p3 ,ydvt)ph9m-s(n some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nod f ,uytc(1)xinconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the thread),u(idcy tf1xs is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of the electric f;kju b hc:b4b2ield ah ;kcjb :ub2b4t a distance of 1.0 m from the nucleus?

  What are the magnitude andl) )t:kfge))k -4tfb rcwl7yd direction of the electric field at a distance of 1.50 m from a 50.bdkf frl))ty4)l 7tk cg:e-w)0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the p5qnsad1/c5xh dz1 ,ow o/ :cdmagnitude of the electric field at the location of wod,n:5 h1oqxa// d1 d sczcp5the test charge?

  A 5.0-C charge is 10 m from a small tnv nv yh5)eemh8 n4:l+est charge. What is the direction of the electric h8ye+n:v vl en5m)nh 4field?

  A 5.0-C charge is 10 m from a small test charge. What is:uje ls*qg+rqd(u sjxyv8 81. the magnitude of the force experienced by a 1.0 nC charge placed at the location o s .vld18xj * q(8yru:+gujsqef the test charge?

  Two point charges each have a value of 3.0 C ankglmbt ,2 .) fxpgkdzk:c+.ymr)k n0 +d are separated by a distance of 4)xdkf cgkmm nzk 0:+l .r tk2,)yp.gb+.0 m. What is the electric 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 2i (vf;r:17zgcmzkzj and a -4.0 mC charge is placed at the 50 cm mark. What is the eleg :cf1z7j2m(zi kvzr; ctric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC char1n +-evund32 k;lmf mcge is placed at the 50 cm mark. Au1+k3fd e2m-l;cnnvm t 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 aagdolxhr9a2x* 3q0r6 nd x = 0.20 m. What is the magnitude of the electric fi2garq 9l raodx0 x6*3held at the point midway between them?

  Three 3.0 mC charges 1)c-xdcqn *(s2 3vwnx mhx6kgare at the three corners of a square of side 0.50 m. The last corner is oq h)gknm-c6( 23* dx vxw1xcsnccupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m onwvbew-/j/ieu,0 ja,gm5 / 5l6ixkf o a a side. Charges are placed at the corners of the square as followwu/ j i-5v/m x,lof eaei5b,jag kw06/s: +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 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 in a unidmz qvo94z nw(j/oh54-mi4a xv pa d;5form electric field. What is themvp/4qv o9xz-5 4j 4mn(ihadod; 5 zaw magnitude of this electric field?

  A particle with a charge of 4.0 mC hv c1ly67ti61c8vt xms as 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 electri./hl z .-4scigqf c710dek+ dqajyv+vc field of 6000 N/C pointing downward. What charge must be placed on the ball 0i e/lqyhf+dc .kscj7vzvq1+ 4.ag- dfor it to be suspended?

  A foam ball of mass 0.u pdfj8chcqw7o8 z7;f k)4 8yb150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is scyk f87w ofq h4cj8bpz8);du7uspended 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 the magnkmg 8kb)q0n cq5cg/lkw-)5jivu:oj8itude of the ele /wjj)5k kvbcimoglcq5k8): g-8un0qctric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a+ 10 fk+3he pk(vxj j+nkpxb6p charge of 3.0 mC. What is the electric field 6.0 cm from the cen kve6x hp pfj(+x3njb0+k1+pkter of the sphere?