State the law of conservation of elec9sui .g 2hr-+v 4jtskup8lsu:tric charge.

  Is it possible for two 2* e5, fd:nwx.i gtefbnegative charges to attract each other?

  Is it possible for a positive and a negative cauw, cvk:gd 8;6npfx8harge to attract each other?

  A glass rod is rubbed with a piece of silk. D jtmha9rd1e8 +uring the process the glass rod acquires a positive charge an+ahdejr 1t9m 8d the silk

  A proton carries a

  The model of the atom shows e0 aa2d/bwd mwm/y .2n qy+lg)a

  A neutral atom always -l(8gu/2tieej i:d px has

  An atom has more electrons than protz , u9j u x.bjwj/qp(u.r,u+nlons. The atom is

  Materials in which the electrons are bound very tighu-a -xt.sd x+6cdx aw / -s4fb31f.kdlva,qqvtly to the nuclei are referred av-uwqq/- vx6.dtf a sas+4 1-xc .d3dfk,lbxto as

  Materials in which th9q y7i06 (d:n aurlkq0dum k/qe electrons are bound very loosely to the nuclei and can move about freely within the man 7rkdqm9q l0u/ d:u0(kaiyq6terial are referred to as

  A negatively charged rod is brought near one end of an uncharged8w (hcyy.qx4tbr/f-yxhpw lc 9 c69, o metal bar. The end of the metal bar farthest h.yw,wp9 oytc( x r96q xch/-ylc8fb4 from the charged rod will be charged

  Sphere A carries a net positi;yk(;(c dazwive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statdw (k(cz;y ;iaement is correct?

  How can a negatively charged rod charge an electroscope positikygh0 gu4 bqmg n,i/6+vely?

  An originally neutral electroscope is briefly touched with a positively chargedod65 y:zqmrta30 .wod glass rod. .q6t3 0 z5oo:mywr ddaThe electroscope

  An originally neutral electroscope izyc1k. 65temks grounded briefly while a positively charged glass rod is held near it. After the glass rod is 1.c 5k6 ketmyzremoved, the electroscope

  A positive object touche v3:r,wwn.m)dzvyxm.ic md; 5g -dn)ks a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscmc.md )vn )d:gmi -kxw ,y 5n3dw;v.rzope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulat8(tp6 3vb*lpkj hu gz6ed 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 negative object. At no time does either tl v jhzgk3pu*8p66b(ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of thefv57f;yi/nc8tbsc m+ j+4nw 7 5ofgin Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated 18axudkld i-sf bw/c7i)d 4i to:f0:lby a distance d. The first charge is larger in magnitude than the 70 -i::if84dsu bwc llkoi /a)dtd1xfsecond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near earh si+c*b mf.vfo33k3ch other on an insulated table. Which statement socb*i f .rf3 k3+vhm3best describes the electrostatic force between them?

  Two charged objects atgbzu/i *ed au edze; sx:1i:;9tract each other with a certain force. If the charges on both objects are doubled with n z:s ei*u ;db/xe19ui gzd;e:ao change in separation, the force between them

  Two charges are separated by a distance d an8q s-9tojv1lzu jy2a4df+ ki/d exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, whaf+ l qu-kz21o/ 4vy89tj sadjit are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the f55 vsj3kb gmr;orce between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original valksjm5 b5g3;vr ue? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m.u*0b qgn p-hf1 What happens to the magnitude of the force on the proton if a secpbgh01nquf*- ond electron is placed next to the first electron?

  An electron and a proton are ta-, nv f3r mj9wbg.h4separated by a distance of 1.0 m. What happens to the magnitude of the force on the first evbgt 9 ,n-h .a3mrw4fjlectron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What h-j ll(7 i z: kamt2gi-wzp85ev;bxr6jappens to the size of the force on the m;gx8pvl(zakr:7wli 6 -zjebj2ti- 5proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. d,9 atj( mu/w(sdm5zj 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 thas(9d/uwzd (5,tm mj je 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 equia-4 spwvumsa9 4u3pa (lateral 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 of +Q-aamsvaupw 4pu (4 3s9 placed at one of the other vertices?

  Which of the following is notqmir lby*qjh302*p 5g 5hom sc: 3a)fj a vector?

  At twice the distance from a point charge, the strength of the electri(kxetfb cjq +m)d;90b c field

  Is it possible to have a zero ely nx6::pazp n3(se, /qxrt+ jaectric field value between a negative and positive charge along z:pxyx:jn3 ,/e+(q atpn6rsa the line joining the two charges?

  Is it possible to have az1., ek t tr01.vcbqol zero electric field value between two positive charges along the line joining o1.t,1q0zktvrl. e cbthe two charges?

  Electric field lines near psitivevkmvyhn3tz nx64sps -p o16:5 point charges

  The electric field sho-x7 cf+jwy;mt; ejqgk-cji- ,wn

  Can electric field lines intersect in free scjpd * vw67bz*qy s;tke5bz28 pace?

  A solid block of metal in elec8xrwq 9ta, d2qn:gtk joa4+ *btrostatic equilibrium is placed in a uniform electric field. Give a sta,xqja* ottnqb9 +dgw 482: rkatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gicl3y+xvs b st/gv 70 kj7.s)dqvt 0sks37bsl7q/ +x.d vyj) gcven the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unif.dh )cq5wpjk6ycz;co a00k m)orm electric field is da h)0.m6yqck0)c ;5cpjwo kdzirected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrosta-ajqpd)n fg d/y2alur )1gt38 tic equilibrium near an electric charge

  A positive point charge is enclosed in 8j1bk+dj u ,r4.ibe,u72uve,kbpzfc a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric fiel1kku4b jfd +v c, b,u,p7u2jezir8b.ed at a point directly above the hollow sphere has

State three properties of conduc qxb*4lqw l6f3+unba,tors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is1 6ub. f-nyhk igt5( tnbhl4obe-5e1t $e = -1.6 \times 10^{-19} \; C$. 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 p3: f y9,vrarxx7q ul(lufu30 irotons than electrons does this piece of plava: 3rr7 i(fx9y u0, 3fuuxqllstic have?

  What is the charge on 1 kg of pro3q( 9kqfg tmgy 7;kt9ftons?

  An atomic nucleus has a chde)f 8;z+ jvl. *ocv6n cck6,z1qdbe parge 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 valuq.r 0c, qf7dsres of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between them?r q7qfr ,.scd0

  A 1.0-C charge is 15 m from a second charge, and the force betwe++7s vbm zkek; *gxgke..vz k7en them is 1.0 N. What is tvxve.ge km+7 k* bk;.zsk+z g7he magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are th)w (ang( + q7ne;ilpvuey?

  The force between a zh-wg:39 q doh )bn:gk-7jzvv$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initialx4pxa2d4e-xb; t* ztnly 2.0 cm apart, experience a 1.0-N force. If they are x-*np b etda42z4xt;xmoved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on tx.*jfsrh zv802 2dp qthe x-axis. The first charge is at the origin, the second tortd x qvz.jsf22 08hp* 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- lp1)fk7hal(e 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 magnihel7pa1k () fltude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the fhm2di -ckz*/be73hh n1ng .n qollowing 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 m-/1begnk2 dh*h nc q z3.h7inthe force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of kpfqv,4jz 061 vpza2e a square, and a second point charge of -Q is placed at the p1 2pfv,06zvqaezj4 kupper-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, iz46 +uuj,:z tt5ixin0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of thjtx4+ 6ut :,iiuz izn5e net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -/rcby 7e2iin -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of yre-n /i2 7cibthe net force on the 5.0 nC charge?

  Three identical chargnvbi766ux86 61q f7p;ggt ig,f tryqu es of 3.0 mC 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 onfugi16ypq rq6 67 8ifgt ;7t ,nb6gxvue of the charges?

  Consider point charges of +Q afe5a,2vx x;rb nd +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -ar2 ;x,xfev 5bQ 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 izs- kkdmll:dr,t2hj)u g5 4 ,hs at x = 4.0 m. Where on the x-axis can a third charge be placed so the:tg kd4)u,,-2j zmhks5dlrl h net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at xrhy n 7s.2acf8b7( scd = 2a. Where can a third positive chfdnacy7 hcs(.r 87s 2barge +q be placed so that the force on it is zero?

  A copper penny has a mass of p;qyufb*l1 q1 vk 3at33.0 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 the force of gravity by the attract--*bed,n jcoje1tis 44 ,hnojion of a fixed proton some distance above it. How far above the electron is the,14 bec,t-h*n4 nsjj - diojoe proton?

  Two 0.20-g metal spheres are hung fro2wqz d(m1lx+3geysa 4 m a common point by nonconducting threads which are 30 cm long. Bothw (yxzmd+ ale1g2q3s4 are given identical 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 hasnnx-2g-ic xf8 a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m cx8ni g x2-fn-from the nucleus?

  What are the magnitude and direk wqbvk4l50lw,6wvj 1ction of the electric field at a distance of 1.50 m from a 50.0-nC charbw5k1l ,6 kqjv0w4vlwge?

  A 5.0-C charge is 10 m from a sma+ad8f t+p3g:(w.p; bgfjkbot ll test charge. What is the magnitude of the electric field at the location of the tbbg p+ 3w.j+t;df:8(to kf agpest charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of th5k.(aql e3sd h20fynhg h09ch 8:ek mle el qe5ynf9k8 a edsckhh l.g3020lhmh(:ectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnirnp .. l/h8gb9p11pjbw 1oqnntude of the force experienced by a gpo./lb p n8 jnbw1h.91r1pnq1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are nfgub* s/8cq; kwi3 )useparated by a distance of 4.0 m. What is the electric field at a point midway between the w)u cf/ks*;n8u i3gbqtwo charges?

  A 5.0-mC charge is placed at the 0 cm mark of a me n+-vim9v q+7gs xtgp8ter stick and a -4.0 mC charge is pl9s7 iqgt8+ -mnv+xpvgaced at the 50 cm mark. What is the electric 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 c kj/o ,ji.-j5j6ibzuich, ;vtharge is placed at uhikt, ojj- c j/ .iiz,;5jv6bthe 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 placo+8- ebk *lcpymtv:- ved at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the bcko-l-ev 8 mvy t+:*ppoint midway between them?

  Three 3.0 mC charges are at the three corners ouy,t n8lvo4nnnnjt h1 g-t/, -otz 1w.-mxgd;f a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electo,14nt;-uwn lmtd g-g/-vx8no. zhnj n ,yt1tric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the cornvzy tfcf; j224l0j(tqer;a -a ers of the square asa;; (f 2efry-j z2l0qjt cvta4 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). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a *3pp uyoavf3+ charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric field? y*aoppf +u3v3

  A particle with a cha 8hq6j/kl8ierhc f) a8rge 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 0.120 g is placed in an zf: j 52/xi-sv.-v ab-* s0cayvud ibdelectric field of 6000 N/C pointing downward. What charge must be placed on the ball for it t2-/bs*daszd -5f cv j x:yiviv.0-u abo be suspended?

  A foam ball of mass 0.kb6:8a:a,c 2d olgz nl150 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.bndl8akzgc:la2:o, 6 What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.u(u5nn.gwq .)j , :gs8bt-u5 otgfjju0 mC. What is the magnitude of the electric field 5.0 cm from nj qofsugg5b j-:t5) n( gtu,.8u j.uwthe sphere's surface?

  A metal sphere of radius 2.0 cm carries a charg j 8dukbq0(eg.e of 3.0 mC. What is the electric field 6.0 cm froqj u(8.ge 0bkdm the center of the sphere?