State the law of conxtuwa//i; jk+ servation of electric charge.

  Is it possible for two negative charges to alh6ku;u+ 0lbqk*2hofbuyy 2:3l ta 8 uttract each other?

  Is it possible for a positive and a ne fko.nzc5 at1p0gj9ih :1 (, xvdtw8wmgative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Dur tqisax wbr-e741byo3e9i ;tc;e9h-cing the process the glass rod acquires a positive chaw9c741-yb qso3t -e;tr;h e9ieic xab rge and the silk

  A proton carries a

  The model of the atom s(pg il*d8 lm*1n3mq 4owhf2f yhows a

  A neutral atom always has(+imx i)g*sv/lj, /1 dr weoyl

  An atom has more electrons than protons. The atom w/l,od2 k8oqaq c.f:a is

  Materials in which the electrons are bo9q;t5 gk0 *ksk*dr orhund very tightly to the nuclei are referred*kqkrkoh9*dg r;50t s to as

  Materials in which the50wvpu.r xy ,g9nt:dy electrons are bound very loosely to the nuclei and can move abo0. 5y9 vuw:tyxnrdg p,ut freely within the material are referred to as

  A negatively charged rod i ,jc (b*jdfjy/s brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod /f,b*jjd (jycwill be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Thd. uk* 3 j8xp(kn5zwvzey are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which stak 8jk.u (zvz3n dwp5x*tement is correct?

  How can a negatively charged rod charge an electroscope positiveyu+,8man6 q/q*xonyold3b1,srk. -xailfd) ly?

  An originally neutral electroscope is briefly touched with a positivelygl7 .)1vjf0 tyrc/gty charged glass/7vc1gyfy l tt)rj0g. rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positi w m-,mwu rijy03hsm:7vely charged glass rod is held nearmji7-y m,sm:3w 0 uhwr it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and 8v3,u-eqevn03th ve cthe leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Whatq-uvev8e 0htv3, e3cn happens to the leaves?

  A large negatively charged objec drttw;ln m5z; n)25ibt is placed on an insulated table. A neutral metallic ball rolls straight toward the object, b ;n5)wzri5nlmd;t2bt ut 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 constant e c.lqx41x 9 9agv+p gcqzhn+1$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distana,+ b u2b xwl6-crrk7yce d. The first charge is larger in magnitude than the seckar uby w -,r6xb+l27cond charge.

  Sphere A carries a net char)9 dmprfi6a8mt x 0ndiu4t9 u+ge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes ur f9 idi u0)94a6tm8pxtnm+ dthe electrostatic force between them?

  Two charged objects attract each other wg) fpia/4x 3lpvm64w 8b i),w )jelxcuith a certain force. If the charges on both objects are doubled w 4jwxi)weg6mpulb3x if,apc))4/ 8lv ith no change in separation, the force between them

  Two charges are separated by a distance d and exert9yw bx1 ml, 1n.g)nnbl mutual attractive forces of F on each other. If the charges are separat1n,19bwy nbgml n )xl.ed by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with )y ,8l.xhwy4r +dlk.oxt ni, ra 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 t+wykol,.,xd l4 iyn). rx h8rits original value? The force is now equal to

  An electron and a proton are separated e9dwy c y10(mmby a distance of 1.0 m. What happens to the magnitude of the force 09edyc (1y mwmon the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What ( boc3 8ixr2g4a/,xb1rbl pkohappens to the magnitude of the force on the/(,oro kp8bxaibxb43rlcg 2 1 first electron if a second electron is placed next to the proton?

  An electron and a proton are separated b gkc*7sc hktu ;k+2gp:)nw0 pqy a distance of 1.0 m. What happens to the size of the force on the proton if the electron pk*72 kpqcsu;hk+wn)c 0 :g gtis moved 0.50 m closer to the proton?

  A point charge of +Q is place c:l+tp fqs:/md at the center of a square. 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 sf+/:cm: pqtl 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 cenpey2fdkufm5(9)y (lo troid of an equilateral triangle. When a second charge of uley dk5f9f(m2po( y) +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 vect7jnte + t8wf4v2ss kgweym 2*,or?

  At twice the distance from a point charge, the strength of the elec3dco / vj73*xzlq md0qtric field

  Is it possible to have a zero electric , *efs jidd hvmq6(4a 0hzq8/ffield value between a negative and positive charge along the line joiningdas ,8h jf6(m q/h4v0eizdqf* the two charges?

  Is it possible to have a zero electric field value between two positive chargs4ly8 sze; sm9es se49zls yms8;along the line joining the two charges?

  Electric field lines near psitive poin1wuz2eh vup s91q*7wct charges

  The electric field sie 5 lb2nvpq1m8)uf(q y vyg*(hown

  Can electric field l,vc wh6/0 rcjurm(h4i ines intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elecr8 4ftugo 2:yytric field. Give a statement concerning the electric field in thty2 ogy:8 fru4e block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamet+eq,.jeyc d- c/bg:zpers are each given the same charge, the electric field (E) midway between the center and the surface -: , dzq.pbec gcjy+e/is

  A cubic block of aluminum rests on a wooden table in a region whereeod;ii+c 9a (i a uniform electric field is directed straight upward. What can be said concerning the charoa i+i(;dc ei9ge on the block's top surface?

  If a conductor is in electros/l fp0 bpn xy0o h,peq(2o(tm8tatic equilibrium near an electric charge

  A positive point charge is enclosed in a hlpug+- 0 qjo3 yskf.239*mr9 jueemvf ollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electrie q93k *e vsu+ypgorjm 230f.u-j9mflc field at a point directly above the hollow sphere has

State three propertieso/-fr;jy8oj/ tq / wk3hoaf -u of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one e9w3gu 6h9jcxsoll3)llectron 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 th+u 9b3zug7m(b nnbl8xan electlxunb9 ( uz8mb3n7+b grons does this piece of plastic have?

  What is the charge on 1 kg ob3x,u +u+lo o gs1pqwxwu50+qf protons?

  An atomic nucleus has a chargre+ /xv ww 91sfr)ec t22lz*ehe 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 -4.0 mC,osjr2bq sr0.9 respectively. What is the magnitude of the br2srj o90.sq electric force between them?

  A 1.0-C charge is 15 m from a second chaf)p;/zj .tbm2nc, my men l0j+rge, and the force between them is 1.0 N. What is the magnitude of the secondjj/tnl mm z y;)fe,pn+0mcb 2. charge?

  Two 1.0-C charges have a force betwe p:1-lsp4x noqen them of 1.0 N. How far apart are they?

  The force between a sy)8t bqnl,iu3/w9aq $30 \; mC$ 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 force. Iuxds ..yrql4kd1pwgm0. 0q w) f they are moved to a new separation of 8.0 cml rk)..dxq4 01upw.ym dqgw 0s, what is the electric force between them?

  Three identical point charges of 2.0 mC are placeql (xua6/ya1u*x0m m dd 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. What are the magnitude and direction of the electrostatic force whic au1 x /mq6*aldu0ymx(h acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0t;)sk6jwf7n t rp,en,sp /-ku mC is placed at the origin, -2.0 m Cr6j7ukfk ,s ns t)t,pw-;pe/n 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 the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC 1 /r/0kuo,u/oure,a,nx6r i6cqorudat 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 x io0r6ur rqckea n1d,uu/ /,oo6,ru /the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second poc(coz8l2u-5huhb2p s int 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 the lo z5 b-8ho(uhcscl 2u2pwer-left corner?

  Q1 = 6.0 nC is at (0.30 m,w8p*i0udxxjw2 lx/h w, b (5ko 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wh 5hwdxxi8xlju/(, pwk0ow*2b at is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Qv 7 :unewcr:u02 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What i7: e:u0 nrwvcus the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed azlqrdla 0 4v1yj,f i o.r6ft(6t the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force z0rvq6ll(tj4idf1 aofr.6, y which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are s33z gbn6+z 2oc oo wvfex;c(;gxj58xn eparated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the 8b ;2(o3x3gojn 5f;cv6zgezx xnow+c electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origixzptkllq3 cj096 4h0 mn 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 ql96 3mz0klt phjxc04on it is zero?

  Charge +2q is placed at the origin and charge -q is placen .1kxu(n d)jrd at x = 2a. Where can a third positive charge +q be placed so that the force on it is zero?ujr1k (xndn.)

  A copper penny has a mass of 3.0 g. A total o 4j9p2 w6ze0rfbe ym:dr4wioz9u0s7 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 fofbbq bxm*mg; q -np.,)rce of gravity by the attraction of a fixed proton some distance above it. How far above t*bf)g; -m.x, q bbmqnphe electron is the proton?

  Two 0.20-g metal spheres are hung from a common poi7.:zg+iog 0b min)weh6rt9 k ont by nonconducting threads which are 30 cm long. Both are given ident rniio.tgbz 0w96+e mh:g )7okical charges, 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 has a charge 3 d 9r9xv) qc /posdt5y++uaq ;ar*grw4bb5 riof +40e. What is the magnitude of the electric field at a distadpr45t u +b+rd*9q/a3 a9oiycbxg 5r;rv qsw )nce of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of:1tompx zzlr-; .fnt. y:fe.z 1.50 m from o zn:et;xr. zm1p-:. l.ftyz fa 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitu djit;g8nikli78o1 b 7de of the electric field at the8 7;ki7b ot1lin8jdi g location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directi vu322lh)huwrt1ar/)d1ixn)v qo y 0 kon of the electric fieldt)rv lu)i3)w1r2 hux anq0 k y/21ovdh?

  A 5.0-C charge is 10 m from a small test charg/* zypr7r thl8d(yvj 135 c1)ompxlf ue. What is the magnitude of the force experienced by a 1.0 nC charge placed at thecym*jd3 px1yv1ulfp hl7 trz8or() 5/ location of the test charge?

  Two point charges each have a value of 3.0 C and are separated bbsdiw /v ;2g8dy a distance of 4.0 m. What is the electric field at a point midway between the two cv;s8d bi/wg 2dharges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charg r/6ouv tq2 k90h1fgcse is placed at the 50 cm mark. What is the eqh9 26/vs rf01k tucoglectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter st dt 3 vw+t3mtab2-fec-n pn40eick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line jon+0t4-d tnb f av32eet-mcp 3wining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed(uk8uz8ddcrj 2x4c. z.c aos* at x = 0 and x = 0.20 m. What is the magnitude of the electric fie.c*c z8(sdoczr2jau 8xu4. kdld at the point midway between them?

  Three 3.0 mC charges are at1j*,pak*nc+z5 hoe q:kvr6c/y a qy o6 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 the r 6az,qvh6en j:ya5 kkoc1+* /ycq* posquare.

  Consider a square whichx q+y5c*xx bg/ is 1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (x g ycx5qx/+*b0, 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 af) +8ki kg rf:zhl(gxdac0g4 /c3z i/a uniform electric field. What is the magnitude of this ele)fadl :4ifg/+a(c/3k i0xgrz zg8 hkcctric field?

  A particle with a cha074ikd krny a*rge of 4.0 mC 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 0.120f1vc63k 0hoba,7 7u vnjg3imv g is placed in an electric field of 6000 N/C pointing downward. What charge musti f6a0 nmvj3b7v u73h 1co,kgv be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 wz a(+e(3vgjmjd8 f196r vp7knw z *vhg carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and i nzfvp 3+j8*ve( whg167wz jrkad mv(9s 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.99il)qy:h2 sz yjls o6 What is the magnitude of thiy ylq9692):lj sosz he electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 . usv rd1 l7n 3p4;+,gsgwj vh6oxhn:hmC. What is the electric fuvl: nnh6 pvg sg4h3od,r;h1.7+jx wsield 6.0 cm from the center of the sphere?