State the law of conservation of elec 1uh+:ddo)sycap,;w tee.b(utric charge.

  Is it possible for two negative charges to attract each oed( 6t(n43oj.h l5hsi:qf(p ny g 1shether?

  Is it possible for a positive and a nl)xql6b lthw6 a5h g/c6( ++ye.r upfsegative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the p4 g0nn5zhth n7 w+pq3pe)f pv6rocess the glass rod acquires a positive charge and the 6qhep53tphp + 7v)gfnwn n40zsilk

  A proton carries a

  The model of the atom le7teug5o4n )shows a

  A neutral atom always hn-b0oavl0 wm7r3bvi . as

  An atom has more electrons thcp vr ygm8s d2bow1;dw*e.:z 4y5 e6qyan protons. The atom is

  Materials in which the electrons are bound very tighyi fz 51 /jrs6;/fyewctly to the nuclei are referred tocs/e56 yjyw zi/ 1;ffr as

  Materials in which the electrons are bound very loosely to the qo eitg+byp6zx d 6b101 v+9ts sdm7m+nuclei and can move about iqxo6zsmt7b1 0ye1t9m p6++s dgv+db freely within the material are referred to as

  A negatively charged rod is brought near one end of an unch+g b6ei,:m;tjtwy nt4arged metal bar. The end of the me+ib 4tt ,yjet: 6;wnmgtal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutrjy rnbej jc m.s opq0/sx *xryw4.;;bhf4883sal. They are placed near each other on an insulated table. Sphesswy s4j qy88hf.;c; pnerb.34jo*r0mb /x jxre B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chargedw8y,*9hx. x uzka+v vd rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivelj+ 2.dqw gum8vy charged glass rod. The electroscvwud8j 2.q m+gope

  An originally neutral electroscope is grounded briefly while a positively chargeohf+sp dj+,k+ d glass rod is held nefd+ s,++oph kjar it. After the glass rod is removed, the electroscope

  A positive object touches a neut(cikhmkf.8er p +qf9/ ral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What ha/9khim . (recqpf+k8f ppens to the leaves?

  A large negatively charged object is placp+eqp1hnzmuqu/b67 p +b v20ged 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 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 the0pp nzqvbbem/ 1 2+upgqu h+76 negative object. What is the final charge on each ball?

  Charge is

  What are the units of the p z4 4mg68p i zlatqh,s5kv -m7fb2j.iCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separatedhrp xk7o-u284h9tri m by a distance d. The first charge is larger in magnitude than the se-hmr78upi rtk92h4ox cond charge.

  Sphere A carries a net charge and spherwesx)f y3tvn1(zj:7c e B is neutral. They are placed near each other on an insulated table. Wh7e y(:csx v1nw3f)jztich statement best describes the electrostatic force between them?

  Two charged objects attract each otfd-.t0vedgkc42gt9b/ 9w nkdher with a certain force. If the charges on both objects are doubled with no.cttkbd0d9/4f 9gvd2 -nekgw change in separation, the force between them

  Two charges are separated by a distance d and ex6,erhu k .om-zert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the ne.mour ,6-zh kew mutual forces?

  Two charged objects attract each other with a force F. What happens mpyp.rtpr7qek yr 1uy51h )50to the force between them if rrepy yqyht.5p117 r ) p05umkone charge is doubled, 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 are separated by a distance omtf/2v*g2xnp5w wx yhc9 qwp eq;08v0f 1.0 m. What happens to the magnitude of the force on the proton if a second electron is pl8tg9y / *wwmxqpx0nvcpef v5; 02h qw2aced next to the first electron?

  An electron and a proton are separated by a distance of 1.mdp po4li n+5 k2g9of/0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the5m 9/g2op4ofdni pk+l proton?

  An electron and a proton are sepagv*i 6 we 6+u)8rcdqrbrated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to thrciv68 dwq+*)r e6ugbe proton?

  A point charge of +Q is placed at the centet:fp mr; 62/qkg1 f oitv,jn9or 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 acts on the positive charge at the square's center. Now, identical charges of -Q are placed at the other three corner1tn:fmopk ift9j;6,o2q/rg vs 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 ofsr lisr./1-c w 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. Wh-l.isrsr c/w1 at 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 vw r-r;m v 4iwvptf)f3n*:lns)j 2ju6yector?

  At twice the distance from a point charge6 trhkjg :tz(,, the strength of the electric field

  Is it possible to have a zero electric field value between a negative aw k;d;shox.k4wbr :p4nd positiv r4.ko;d;wb xwp4 ksh:e charge along the line joining the two charges?

  Is it possible to have a zero electrik zdsln s625q5c field value between two positive charges along zqdn5slk56s2 the line joining the two charges?

  Electric field lines near psitive point chargesjy 78 3lqdqqom m11s4s

  The electric field sho;g,s2zzl;pb lwn

  Can electric field lines intersect incagxramq2/5) q;d yj- free space?

  A solid block of metal in electrostatic equilibrium is placed o rsb he2v.,r6ssnu)elj -:3m in a uniform electric field. Give a statemenhrv:jeuneml s. r)3 s6ob-,2s t concerning the electric field in the block's interior.

  If a solid metal sphere an1 6q)7jifz..eo tmd end a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between thmq7e) z.on6dij.et1fe center and the surface is

  A cubic block of aluminum rests on a wooden table in *d(sbbh yn 6i+a region where a uniform electric hd +b*s6y(i bnfield is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chargixl/ roz -5(hze

  A positive point charge is enclosed in a hollow md95xaoe.mrz1 etallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphe.1oa 5rmd 9zexre has

State three properties of conductors 6fqsm ery(f79in static equilibrium.

State Gauss's law.

  The charge carried by one electrom oipi; ) b(nfm6ignvgu/e*3: n 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. Ho8ufo,z ya a*s-:c qju9w many more protons than electrons does this piece of plajuz9 f 8o* ,s:yucqa-astic have?

  What is the charge on 1 kg of p;5 dxh y4uke1h5,v ikkrotons?

  An atomic nucleus has a chargo nw) m3wfbw/c* ab//ve of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separat*6t6 t jd*oohjf7k 0g2iva w4wed by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the e6aki v7w 2otg 6tw0jh* 4j*odflectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force be6vpp5 ydbv c, dob (g.srf5(sv,;c6v ztween them is 1.0 N. W5 os5(;p66bbyddprg,, vz( v sc.cvfv hat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1psh 8*.brjeu45 q; kmn.0 N. How far apart are they?

  The force between a xogex127d;w c$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experi,4p k6 )jzug)aa1xh puence a 1.0-N force. If they are moved to a new separation of 8.0 cm, what x)a41ak pzpju h6) g,uis the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. T o(pu ks7h/gur;4 s beb* dgk0qrk)(;ahe 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 electrostatibuagp ; d7 he)b0 rsgo(;*rk /u4s(kkqc force which acts on the charge at the origin?

  Three point charges are placed on the x-axis4x0h)hui+qy o h 2/vzh. 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 ma+h/z)0vqy oh i24uhxhrk. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges ar xgmu v:i4fp3:8r 0mxde located at the following 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 the force on the 3.00-mC 0xmm8 vf prd: 3gi4:xucharge?

  A point charge of +Q is placed at the cent7uug wq2r1p0g:kk-+aibw1 e xer 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 2.0 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 r:-ib 71qe 2 g1kup+u xwagk0wis 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); Q3 = .x tm+axvl2v7nm f( c75.0 nC is at (0, 0). What is the magnitude of the net forcc( xfl x77n+m2vvm.at e on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5 4 izgm7;97xfc dt+ssnypw9k :8f7hwn.0 nC is at (0, 0). What is the direction of the net force ow:wnn7 s9k9h8+pmx7f;t 7z yc fgs4 din the 5.0 nC charge?

  Three identical charges of 3.0 mC are pf36j,w ;xyi 04a+,a wv hzzgrplaced at the vertices of an equilateral triangle which measx+0;iz3wz f wgva4,,jy6 a rphures 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 +4Q, which are separated by 3.0 m. At what 9qgjee3:2ksr -c )6,n hk2af7luwuur point, on a line betweqa,ruf2es )rhu ul-k 79g6: nwjkc2e3en 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 is at n hm x71edx-io38sfg6 x = 4.0 m. Where on the x-axis can a third chfge sno7d6 8mi -3xhx1arge be placed so the net force on it is zero?

  Charge +2q is placed at tx1g/h4yft+.ak tu - 04xo hssgr7l4wthe origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it ituwyh g 1hx4/+ofk-ltg4x.rs0 7t4a ss zero?

  A copper penny has a mass of 3.0 g. A total ofw 7gb1b1zm7qz 2cbr 2 ht8go+m $4.0 \times 10^{12} \; electrons$ 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 thedggzp;yp d7fl (+ 44mu attraction of a fixed proton some distance above mf; l dzy4pg74d upg(+it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncondur9oa +k1iy l8g vpblqx8s 9jue,9sx+. cting threads which are 30 cm long. Both are given identical c9 8rebkl,s gq1 jplyo xa+.89xiu+9vs harges, 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 of +40 74)r/rqf3nx:xtjb l le. What is the magnitude of the electric field at a distance of 1.0 m from l)ft :73/q xr xjnrb4lthe nucleus?

  What are the magnitude andsxrbr:e; 4 v- rily ;-rsu:g5w direction of the electric field at a distance of 1.50 m from a y5lgr:r; sei :u;-4- sbxrr vw50.0-nC charge?

  A 5.0-C charge is 10 m from a smalkv.:c4z xy t h3j3rv9fns.r/:bz op m9l test charge. What is the magnitude of the electric field at the location of the test co4/s.bvxnyt rhc j k3fzmvr9: . :9p3zharge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of t9ouh l /m23*oqdv-nlqh j7r:dhe elecm o2l9-:dd nvhljq u/qo* 7rh3tric field?

  A 5.0-C charge is 10 m from a small test charge. What is - iggqstrd5(o*ka8,a the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test char *gar8o,s-a5 idg tqk(ge?

  Two point charges each have a value of 3.0 C and are separated by a distance og(3kz 8eqpzb v *0-uyzf 4.0 m. What is the electric field at a point midwz0 -ue(yk*pb8 g3v qzzay between the two charges?

  A 5.0-mC charge is placed .qrfm( hynybk-ur*()at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electru-r(yrqh(.bk)mn fy* ic field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 as9 c.oixiu a+n*2lel+dy m:, cm mark 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 electric field zeric 2m lose+n9d*:+.ay i,xluao?

  Two point charges of +3.0 mC and -7.0 mhr4j;7 kg b;ahC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electri 7;;4gkjabr hhc field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a sg*1rw0mlh) zjjqs exjr :5++tquare of side 0.50 m. The last corner is occupied by a -3.0 mC charge+w0+jgl:jjx ) srz rh5tqme*1. 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 oa x.cfn;ki3me9c) l,qf the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); qie;.lckx)m c39,na f+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.u3cs6ud2brb1a- gmu.0 mC when it is placed in a uniform electric field. What is the magnitude uac6 u2brgubs- 3d.m1 of this electric field?

  A particle with a charge of 4.0 mC has a mas j-u.s7ltg wggm:lp ,/s 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 electric field of 600+xr:oaiv pt,;0 N/C pointing downward. What charge must be placed on the ball for it to be suao;t+pr:,xvi spended?

  A foam ball of mass 0.150 g carries a charge of -2.00 goplwk co:7)23b 6pose0l ,ta nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and ,p bp03a s76cklt)g:e 2looowdirection of the electric field?

  A metal sphere of radius 10 cm carries a cf1 38(fzk8i; eg2rgzrbikabv72 kp s/harge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the/ 8p2fr2a1e zzisbg(rvkfki g 87k b3; sphere's surface?

  A metal sphere of radius 2.0 cmf),1zl 2hrk k 5*q 9a,gmjapjm carries a charge of 3.0 mC. What is the electric field 6.0,q5hjga*a lp )zk,1 2jkm fr9m cm from the center of the sphere?