State the law of conservation of eled (r7hr(wl sj.y rlcr0 l:+g)wctric charge.

  Is it possible for two negative charges to a9v65x jko spag9-e7 o /cgvvkl9(pu;u ttract each other?

  Is it possible for a positive and a negative charge to+:fl gb ;yk.(r0r wvtn19gw eo attract each other?

  A glass rod is rubbed wix1 8 sita*cd..nte6hvth a piece of silk. During the process the glass rod acquires a podtc1x.ta n. 8vse 6ih*sitive charge and the silk

  A proton carries a

  The model of the atom sct5f, qa,p vn :dcbi(;hows a

  A neutral atom always f860u3aqpqka has

  An atom has more electrons than protons. The atomk** oe *2xzz u6oflse+ is

  Materials in which the electrons are bound very tightly to the nuclei are rosvx3v1 ebkt-nomj 5 , dir5op5g g-*7eferre t 7i5*k-,ggxrn5 p1 5obosemjd3 -vovd to as

  Materials in which the electrons a,s*o/yj zzn 9jre bound very loosely to the nuclei and can move about freely with 9 ynojj,s*/zzin the material are referred to as

  A negatively charged rod is brought ne 1/(xxptws;bsar one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be c/xb w(; ts1xpsharged

  Sphere A carries a net positive ns0, pm4jx2fkubi; x 2charge, and sphere B is neutral. They are placed neaf u24ixbnsj;xm 20 pk,r 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 charged rod charge an j7jvb ) gfn6 v*hp :a6o4uuqr/electroscope positively?

  An originally neutral electroscope is briefl8jxo cd b: lkp(k,(:lyy touched with a positively charged g b8,j y(: k:pkoxld(lclass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively charbzli8/ h/l zq hq,.(jqged glass rod is held near it. After the glass rod is removed, the ell,h(qzqb q/ij l.hz/8ectroscope

  A positive object touches a neutral electroscope, an:u24kox :-q/m tsxh szd the leaves separate. Then a negative object is brought near the elexmh/4tzs: o2ks:-uq xctroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed ot2 i lvm2ydx4b ,3ls0drs iq;(n an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ba42rsl ( 3dlv b2yimtxq;0s,d ill 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 C.r *y5i84l nxar* kacmoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distan7-g db zti41yrce d. The first charge is larger in magnitzt -dgi br417yude than the second charge.

  Sphere A carries a net charge and m8:mgm :,hc1 tibw3a qsphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrobhq:t:a, 8m13imgcw m static force between them?

  Two charged objects attract each other with a certain force. 6 i4 ax8gaz1mk If the charges on both objects are doubled with no change inxg8zi k1aa 46m separation, the force between them

  Two charges are separated by a distance d and exert mutual attfmrl3ea..j* v6qt:3 i; cwcaj ractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces. .; *wrqfliaca jc6 vt3ej:3m?

  Two charged objects attract each other v5bk, /xizyn4 with a force F. What happens to the force between them if one charge is doubled, thzy5bv ki x4n/,e 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 sgpf x4k.x8 l9kss ov+04g3cq yeparated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed k0lf8 vk 9 +c.y4 xsp34sqgxognext to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happes f n4-y3bk/ q53fxdrpns to the magnitude of the force on the ff/-x4 3dpyskr nq 35bfirst electron if a second electron is placed next to the proton?

  An electron and a proton are separated by;ro-3xx 7 p0u si d:eeyqlh0-x+c x.+bvb ge;p a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.5. :-g0vxrps ;dl; epx+ 7hqxcox+0 bu 3eie-yb0 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When 4z+er ,oh tt0za second point charge of -Q is placed at one of the sze04 hto+z,tr quare'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 the positive charge at the center of the square?

  A point charge of +Q is placedm0mj k;m eix fhv -e4b2u7d29p at the centroid 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 N acts on it. What is the magnitude of the force that acts on the centdem 92p- mhfbx2j;uk v4m0e7ier charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followinggu dh. 7/g-0jjzhew0ji:*tea is not a vector?

  At twice the distance from a point charge, ts6cui+4 ax /cphe strength of the electric field

  Is it possible to have a zero electric field value between a negative agjsv : nw3n-nm0bffuw ao 5)oi6* 7(bznd positive charge along th5( i b - 0a3ou jmo)vbwgn:*fzs6wn7nfe line joining the two charges?

  Is it possible to have a zero electri24.n;gy vy ,4bp tt8ehuigf3d)yndj/c field value between two positive charges along theg ;p8d v43tnfyj d yu.h4,niby2tg) /e line joining the two charges?

  Electric field lines near psitive point53 wmy(m7eo b5b)i zbp charges

  The electric field s5naowfrt33xxtnj5ny, 7y q,lt 8:ko,hown

  Can electric field lines intersecbu **meja++48fv fq.4ef ois st in free space?

  A solid block of metal im;sm uyg(j) ypg:,h,in electrostatic equilibrium is placed in a uniform electric field. Give a stupygyh( ,:;gms, i)m jatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters aw6pr, drv.xhirr*ji 4l8d 5,vre each given the same charr 8wh6r r,4 pj*vd. li5dxvr,ige, the electric field (E) midway between the center and the surface is

  A cubic block of alu ul9ni. f+a sd-;mm.nrkl.vnia, 2 zw)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 top sur-uk.nlw;a9ra.i2i)+ fv , lnsn. dzmmface?

  If a conductor is in electrostatic equilibrium near an yqn 9sg;8kqha8jn3 p-electric charge

  A positive point charge is enclosed in a hollow metallic spherg-n 5.ylb(lh be that is grounded. As compared to the case without the hollow sphere, the electric yn lbgh5(.lb-field at a point directly above the hollow sphere has

State three properties of cd njqtn+) 1g1 u(1gclhonductors in static equilibrium.

State Gauss's law.

  The charge carried by onerdy) ptm uhdlmi4z mm73l8v+j d 8--5y 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 *m9*tspubqbs *o)gza0,hif, e9 yje3 of +2.00 mC. How many more protons than electrons does this piece of p9t ja 0,,z9 *qufp*oheibm ye)g*bss3lastic have?

  What is the charge on 1 kg c) uk98zs ga5e du3xj7of protons?

  An atomic nucleus has a charge of l21 0 m52cilficxf, po$+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sep n9o*jzj 8fx1iarated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitudef*jxoz1j 8n9i of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the)vb-,senn*g i4qt3ccp nv g69 force between them is 1.0 N. What is the magnitune3tc*qv9-4 )nvcpng igb, s6de of the second charge?

  Two 1.0-C charges have a force between t ;hv g2s/v r ihbaw-v1tl/wvlg 21u;i;hem of 1.0 N. How far apart are they?

  The force between a u 3uive+b6dw*$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm 4vhnj,3ifpm) apart, experience a 1.0-N force. If they are moved to 3p)m nifjv4h,a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 24ewiuffv256 uput q1tc4tx :3.0 mC are placed on the x-axis. The first charge is at the origin, the second3vpfu4t:1 itw6 eu5qct x4 u2f 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 the x-axis. A charge of +2.0 mjto7q slbxbns*.0w7k;:tbp8 d (zm en+ci)t 5C is placed at the origin, -2.0 m C to tho*skn7z:8p0.ln tcw(d tbxb5e ims+t ;)7b qje 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 the origin?

  Three point charges are located at the following positions: wm 5cl3bfe. 6xQ1 = 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 the 3.00-mC charbx.lf63ce5m w ge?

  A point charge of +Q is pla(,t)bz s wh:abced at the center 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.bab,:h)tz (ws0 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,,; vodz ifn5y* 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chargyn f 5o;z*idv,e?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0..u;dsk ahqhnn v ud7;-d5 ob8(10 m); Q3 = 5.0 nC is at (0, 0);;7o q bvauhduk 8-s. (dh5dnn. What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC 0w ruge yxol x3/,nk2*are placed at the vertices of an equilateral ty r 2w3kox0nelu,*x/griangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Qjh 4kk(rig/i xzn +guj,5+2so, which are separated by 3.0 m. At what point, on a line between the two charges, w5i4 + grgos/k(,+jji2 nz khuxould 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 aeyhd 57s98 dpfyu3rg: ox3- tit the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is d od9t 3ypeh- :rxs8u5f 7yig3zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2w39a7 iieli *wa. Where can a third positive ch*e7i i wl3w9aiarge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totrzy/byuh5ske (w. ib wh1dk/ 9i4+w8pal 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 thxsbf:,w- fw4ie attraction of a fixed proton some distance above it. How far above thf -fwb:xw ,is4e electron is the proton?

  Two 0.20-g metal spheres rllb./q- b+:u6hve7w9p fvtiare hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic re7. rlb:pivv -9 bwetqu6hlf +/pulsion 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 9y0l9bnv tt c (iyd(fzm)3aj /+40e. What is the magnitude of the electric field at a distance of 1.0 m from the3fb m9 inct(y( l/j)ty a9vz0d nucleus?

  What are the magnitude and direction of the electricz+ laicshq/ qpz0:prga*/4 * ke8k3j c field at a distance of 1.50 :3g+qa8kphc*/rcj*leq/ psk0zz4ia m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is t /thv-nfc/y 9e)ozb l1he magnitude of the electric field at the location of the test c/ 9/fcz1oyhle nbvt- )harge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction oi1rdp(o(s;b 6 v2 eqrof the electric fiedo2;q( 1r6ibsv poer(ld?

  A 5.0-C charge is 10 m from a small tbzq7z8j- *n:cuu usc3est charge. What is the magnitude of the force experienced by a 1.0 nC cuzu- u3*:7jcnbcs 8q zharge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and ar5eb;iotkbth2 p0o .)te separated by a distance of 4.0 m. t;op2 5io) kt0.bbhte What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at o5c/b4o,a 3hmedme 1rh(4 pjdhz/jq 9the 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 the 30 cm mark45ez(/a m9 op4h/md3c beqjh1drjo ,h?

  A 5.0-mC charge is placed at the 0 cm mark en1nmg ta.. rtsk(iw9jzs4u 4loh)x.h9rd9, of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the ez e rdj9 sh g.tx4w(. ts)khao9.,1lnmir 49nulectric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x =49r3zq qm.c yr 0.20 m. What r4cq 3rmzq.9y is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the tbk0lhv,5 y os/luz 0o*hree corners of a square of side 0.50 m. The last cor5 ,kuob0hl0 lo*v ys/zner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners oh .w,kdkpp5d47n zj6z f 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 (0h ddk75z,4kwpjz .p6n, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a char*d7fbinn.3pvo h 9c(o +k 2a am*paou2ge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fieo( 3anmunak 22.o+7p9i* p* ocdafhb vld?

  A particle with a charge of 4.0 mChlq6-lu8 f((pwpv 5f w 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 0.120a3q0b-ke;ak j g is placed in an electric field of 6000 N/C pointing downward.-0;q kbakj3e a What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placesv.n*qz lrsq2 v0cn8v;h 0yq5d inside a uniform electric field, and is suspenvq 0 zhs0n8.q;lrcq *5nvvsy2ded against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of rau20cm)r aw;9w ltq z9 lazt/y)dius 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the9;t uz0a)mr/alcw29 z tq)ywl sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC.6rt: db lo.uxs8wuj2t+, yd f 2qp9;au What is the electric fb;,2 jr+fo psauu28y9ddt6 x wt u.:qlield 6.0 cm from the center of the sphere?