State the law of conservation of ef) 6lzfi): k2bl-cre ;kgdc:+s w i3h/-syg salectric charge.

  Is it possible for two negative charges to attract ear(mta ,he (6qq2:- bplgxdve ;ch other?

  Is it possible for a positive wqj(,n y8u/y hand a negative charge to attract each other?

  A glass rod is rubbed with a piece of si , mzml9sq tj:1i7*;a pjrowd.lk. During the process the glass rod acquires a positive charge a a,zq7m:mlij; 9.w spro jd*1tnd the silk

  A proton carries a

  The model of the atoov :g.xv x/u hs-j)mx4m shows a

  A neutral atom always146u(cifbi df,/3t+lsm; i bqj tloj1 has

  An atom has more electrons than protonslvv d 8/w.mv9n. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are ref5jcl vf mm1s nliz(h1 )xyc4:9erred tynvf1z:)clm lm49i 15xch(sj o as

  Materials in which the electrons are bound very l 8:-de1xrvafwzrwksett:4yx;f 9 0( xoosely to the nuclei and can move about freely within the materiaxf:ty; fwr- akxet:(9 r48vedz0s1wxl are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar 7m z .z9qkqcmywm9 9zz.s23zj. The end of the metal bar far37s9 zj9 ywq9m qm.zzkmz z.c2thest from the charged rod will be charged

  Sphere A carries a net positive charge, and b fub0 i buo49jk9fbt/. /sz6ysphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Whichs yfi0bb. b u6/ bju9oz4f/9kt statement is correct?

  How can a negatively charged rod charge 2y- sgyk /a+pel/;qsa an electroscope positively?

  An originally neutral electroscope is briefly toh0 a,cneu ,s+buched with a positively charged glass rod. The electroscncaehsb, +, 0uope

  An originally neutral electroscope is ld2do9u7.h hdgrounded briefly while a positively charged glass rod is held near it. Afterd2 o.d97 ludhh the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, a+vtfr 3-b++):lcif t2 tw)cy6ppjyjtnd the leaves separate. Then a negative object is brought near the electrosc+6 jyrt++ tc:pt2pl cbjtw i)-v f)yf3ope, but does not touch it. What happens to the leaves?

  A large negatively charged object isj5vnm2 mr /sk/ placed on an insulated table. A neutral metal kjmv/ r5m2ns/lic 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 the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb o - gdqb +*+*nif3byrvconstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d.r *ewa*b:ih f4 The first charge is larger in magnitude than the hf rew*b4i *a:second charge.

  Sphere A carries a net chasi, o zjr-)9fs) p 68jgzd2qlorge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best descd, )of8s oz jz)rq g2p9-l6sjiribes the electrostatic force between them?

  Two charged objects attract each othe 3hlwi kn*t.f8rl(r)sr with a certain force. If the charges on both objects are doubled with no change in separation, the force betweell* )k(.3r htrni8sfw n them

  Two charges are separated*m 0- 7g/ro euvv-jofs by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a0rsv m7 /vof*e- ouj-g distance of d/3, what are the new mutual forces?

  Two charged objects attrt7ky*c4syb z4yat8 r- act each other with a 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 its original value? The force is now yy 4z cbt74yk-ts*r8a equal to

  An electron and a proton are sr9fl7x7 e.pns eparated by a distance of 1.0 m. What happens to the l 7rexn97.fsp magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by kyzxi/8-t / gcweau43a distance of 1.0 m. What happens to the magnitude of the force on the first electron ifxy cw /4tk8gez3/ a-iu a second electron is placed next to the proton?

  An electron and a proton are separated by a distance v0q7glc2cmx,m 6k;8s z ;x llvof 1.0 m. What happens to the size of the force on t,m x slc8;0;qkgx2v 6m7z llvche proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placz7u6*nl8gn9keltn *-- d huqwed 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 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. Whaqdg8l6u9zw -*7nlu-t*kehn n t 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 pla67rxuv(;/ bn(xm trhlced 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. Whax mxn/hbtrv;( 6 r7ul(t 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 vwvkm:)k e;g3bector?

  At twice the distance from a point charge, the strength of the el(emiggx g.ufm78t;t nh(0h4 0ebu5ww qh 05awectric field

  Is it possible to have a zero electric field k1rocn6 k4 + :suih7lgvalue between a negative and positive cos r7 :gh lki1uknc4+6harge along the line joining the two charges?

  Is it possible to have a zero electric field value between z 4*lxczij-/z/ ul 9asu16xsctwo positive charges along the line joining thexsci 19c a /u/s*4u6-z jzxllz two charges?

  Electric field lines near psitivhuu,(jv.;0 p h7tyw9dl nlki 8e point charges

  The electric field scd 6j74uf qwbm-x*+ow hown

  Can electric field lines l-3srpzt2j:e. s s,s +nz ujn7intersect in free space?

  A solid block of metal in electrosta;qghy tf8d(eib5*av (tic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's intereqtih5dvy 8(*bfg( ;a ior.

  If a solid metal sphere and a hollow metal sphere of equal dlitg: x7j() a z4:vqbb, +ggs(us2ktoiameters are each given the same charge, the electric field (E) midway betwzg)t4gqsus( k:(lvja ,og t2:+bx 7b ieen the center and the surface is

  A cubic block of aluminum rests on a wooden tajm80w:iytnra -d(,3rus5 o f uble in a region where a uniform electric fieli8,3jyr 5af: tswu-nrmdu(0od is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in elect3 7dvpzb+ qhawk-z*lreyc 6/3rostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallif,+hl i/q m 00vg(32dddjzrcx c sphere that is grounded. As compared to the case without the hollv j2(ri ,xdhfmg /c0z0+lddq3ow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equiz z/13 (tutnbylibrium.

State Gauss's law.

  The charge carried by onzp3 o77i6z egg wpjat5zc0q1 3e 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 of +2.00 mC. Hru.0 akx5/ps ro( vwy-h+b*i yow many more protons than electrons does this piece of pla.ruyw0ho/bs+-i* k(a5x yrvpstic have?

  What is the charge on 1 kgv f*w btb87uq9 of protons?

  An atomic nucleus has a charge ofr (ptnc,e (b+b $+40e$. 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,g .-wdh+bt,tq respectively. What is thewg+,.dhtq tb- magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between ty 1cgv;ehu;,be9m:u a 7q8ev lhem is 1.0 N. What is the magnitude of the second c,7guh:a vy m1 8;eq;ecb lvu9eharge?

  Two 1.0-C charges have a force between them of 1.0 N. :lz ekexi0h*-bq;uh .How far apart are they?

  The force between a do cq ;xju*0oabt)n :t+ 2v;ei$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, ini-( gwsc/ab; ge +epo5bsie6: ytially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what 5e obg ;pei6a/w:b- c g+syes(is the electric force between them?

  Three identical point charges of 2.0 mC are8z, ppg 1zrynh8ax9 w. placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, anzp9 yzang8rw , xhp.81d 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 r;b70qm k :1bfm my5pfi*s 0bxon the x-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 magnitude and direction of the electrostatic force which acts on t f;* rm0qkfx:m0bby157 b pimshe charge at the origin?

  Three point charges are y: x+nu cc/5vaiz)khm5;f e4ulocated 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 iy ;iux)a +mvz5:k5uf/cn4ch e s 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 secvn 6q 5q)kr,uld-y v4;k (uevgond point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts6dgnvq; 4kv, yu( e-uk vqrl)5 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 (rj,)e1x) 1,syq ) pmpey51 re.q csleop0fd h70, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.yo 5r . eyqcej)e,lp d)1rsf1, phmsq ep701)x0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0,(c m5w 7(f xkfv-nqik5 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directi5cifmkx- (kn(5 7vq wfon of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equif qc;ja(5kket)d0l w- +fvs.clateral triangle which measures 30 cm on a side. What is the magnitud(e.)l -f 0qjt+ka5k cfvcw ;sde 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 4cbttj ggi2wlu.)7 1jm. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on i1.g7)iw l bju g2ctj4tt would be zero?

  A +3.0-C charge is am (v ekdweh) bkj2/phipp c*berf3r6;)d11*w t 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 zervie)pek26pk j/ 1* *1 p3h;rc)b d(whbmfdrewo?

  Charge +2q is placed at the origin and chasqx9 v vihe(;bv7k(f)rge -q is placed at x = 2a. Where can a third positive charge +q be plac9x(vq (fv;e hvib7 )sked so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of nwu w7-kio;+nmt95k q $4.0 \times 10^{12} \; electrons$ 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 against41 5h.d1dcw;itpjfu 2g x8hhd the force of gravity by the attraction of a fixed proton some distance above it. How far above the h8wcdp;x54f.12ih d ju1g hdtelectron is the proton?

  Two 0.20-g metal spheres are hung from a c kx+:njavw v6)ommon point by nonconducting threads whicvx6:jvkna )+ wh are 30 cm long. Both 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 has a charge of +40e. What is the magnitude of the elect06;9vxhrpu h5gu t(n 4djzh)eric field at a distance of 1.0 m from th0zeu6hh5hr xjg4dnpu9tv( ;)e nucleus?

  What are the magnitude and direction of the elb di7vxs0(cs8ectric field at a distance of 1.50 m from a 50(isb8v 7cs0x d.0-nC charge?

  A 5.0-C charge is 10 m frw6n hx83dj h*mpen(h /om a small test charge. What is the magnitude of the electric fw8 3x emhd*/ph(nj6n hield at the location of the test charge?

  A 5.0-C charge is 10 m from a sma q7w a:vgtwzu;t 2*g7s;eijk/ ll test charge. What is the direction of the electric fi 7sg ta27 gzwv/i:;k wutje*q;eld?

  A 5.0-C charge is 10 ml4; 6 i2uuvhjdp6nff+ from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of then4jfdf pvu2ih ; 66ul+ test charge?

  Two point charges each have a value of 3.0 C and are separated by a distady xr3bx(2u pvxde9i,t1 h.;ynce of 4.03 p2y1eti,rdxuv xd.b9 x(; yh m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed (y rs/tuxs8 y (+ej)smat the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fiejy(uss (+ trmyxs/8e)ld at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick :;ue(m y k0rl*s ay3lhand a -4.0 mC charge is placed at the 50 cm mark. At what poi3l*ke:yry0 u (lasm;hnt on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.uss o.+gw/osc 6my* t,0 mC are placed at x = 0 and x = 0.20 m. Wha sgt*,.my ssou+ ow6/ct is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the ec*wk no0*hy ;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 cek;0 hcwn*y*o enter of the square.

  Consider a square which l+mdihuc6*2z * hehb8ys 8i:gis 1.0 m on a side. Charges are placed at the corners of 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 (0, 1). What is the magnitude of the electric fieldyh+s* bmdzihhu:igc l6 e 88*2 at the square's center?

  A force of 10 N acts on a chargeb.s/ ersr*av 4 of 5.0 mC when it is placed in a uniform electric field. v./ra4sb*rs e What is the magnitude of this electric field?

  A particle with a chaow7bxy( bk0gp/ov fr*2v p s:qbh27 f8rge 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 n1j7vv2e 1zasis placed in an electric field of 6000 N/C pointing downward. What charge must be pls 2ejvzn17a 1vaced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries9c e6rijo v7hn7c 9s. jvwx50f a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspihj 7r9 .657wno sv9xfjevcc0ended 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. Whakljkr ft/w+qk/ bk:,p 0y k.:kt is the magnitude of the electric fielj.:,kkr/kwlpyktqk b+k/f : 0d 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mma)ccflvv coxy8i 74 7/py93jC. What is the electric fimyic8 7yl 9j37/cofpxva c4v)eld 6.0 cm from the center of the sphere?