State the law of conservation of electric ch/5jv8c(nzek hkt7v 06bt g4dy arge.

  Is it possible for two negative cha68i/mp,3 h z3llkgmpwrges to attract each other?

  Is it possible for a positive a 6pu lorf+ta,6zd,y1 mnd a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the pr +7x1dwg(adehkj4j t3; ath;4wypnf* ocess the glass rod acquiw a;wkphh;x4g7fy1jt ad(d*e+tj3n 4res a positive charge and the silk

  A proton carries a

  The model of the atom;e0wkjh6i rk (yv60vl shows a

  A neutral atom always haw 4dy( a*rdot5s

  An atom has more electrons thanw a-s3rkb7( cw protons. The atom is

  Materials in which the electrons are b),big fj+e j6round very tightly to the nuclei are referrejbi +,)ej6 gfrd to as

  Materials in which the electrons are boufxn 2s(o*1g glnd very loosely to the nuclei and can move about freelyl1fx (g2*sgno within the material are referred to as

  A negatively charged rod is brought near one end of aiox/ 1eg:fsh1 n uncharged metal bar. The end of the metal bh1s:goefi 1x /ar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B i kavh52 7d/s6n *lqcd,qebp(xs neutral. They are placed near each other on an insulatcd(hp na ebx76/*vqk5s, ql2ded table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively 5mfqgz*;a7svn mv(j 9charged rod charge an electroscope positively?

  An originally neutral electroscope is bryo/)t 90k gj1rc(joxr iefly touched with a positively charged glass rod. The electroscop) (cok0oyr t1r/9jjxge

  An originally neutral electroscope is groun l.*ubc( k;vscded briefly while a positively charged glass ro*v ; (sbcclu.kd is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Th) o9wf;x )fdwfxtu/ zs5+ yuh8en a nsy+fhxtf z )5w) 9uwfox;/ 8udegative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is plajp-dm a0ti.b+ ced 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 npt +aj.ibd0-m o time does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coi jlr) u(5dri)o (3q--jq4awd c pk+wjulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charggwg s ilg1ny +dlh(78mo;br/u/t2 7soe is larger in magnitulnrwluytg/7gm ;( +h8gbo1soi d/s7 2de than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near ea:w8: ;)lonq l yhmaul-ch other on an insull-: yh;qn)8o w:lma ulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If oa1ld5s0: xog7 emt1 zthe charges on both objects ase7am0do5o1x t1zlg :re doubled with no change in separation, the force between them

  Two charges are separated by a distanceo5j7/fl j9tdy d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual f/fjot7j dy5 9lorces?

  Two charged objects attract each other with a force F. What happens to the fop ++.rnxgwllan +.c b0rce between them if one charge is doubled, the other charge is tripled, and the separation distanc pn.nlw0 .+alrx gc++be 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 distanqjyx+l7+ru pi4 mu; lf- ub51hce of 1.0 m. What happens to the magnitude of the force on the proton if a second el;h- f j p5lu4xr7y++ bquul1imectron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happokth;wz(jm tt /t38q0ens to the magnitud3tm(q j;hzt two 80/tke of the force on the first electron if a second electron is placed next to the proton?

  An electron and a prj1:yh pkw h(h fk(7wm7oton are separated by a distance of 1.0 m. What happens to the size of the force on the protonk h(whf hpjym (7wk17: 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. When a second pointd1)ku qu./ l,7 togzdf charge of -Q is placed at one of the square's corners, it is observed that an electrostatic fdu7 /g l.,ztkoqdu f)1orce 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 placed at the cezk6 m8 aw0ez5 n)iqo.mzjub7 hj:g*p, ntroid 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 center charge due to a bo0azp).iqkg7z m w,n8m e:jh5j6uz *third charge of +Q placed at one of the other vertices?

  Which of the following is not. 9gx8ell0p opa40)cbxx 4i iu a vector?

  At twice the distance from a point charge, the strength of k138e v np:yi*4ihjhgthe electric field

  Is it possible to have a zero electric field val-u)lk, pj9 pmque between a negative and positive cm9pj)- uqplk ,harge along the line joining the two charges?

  Is it possible to have a zero electric field value brycj8 6su- d4306 x3zhu nameyetween two positive charges als08z 63mynye x- uu4cd3jhra6ong the line joining the two charges?

  Electric field lines near psitive point ch8jkgg5abn z4. mpd70marges

  The electric field sho q/tpa3a 06tegwn

  Can electric field lines intersect in free x 8g2wkux 7rx,space?

  A solid block of metal in electrostatic equilibrium is placed in a um*bjio zoq;ja0 6 5j;qniform electric field. Give a statement concerning the electric field in the bloc;joj b5j ;iqq*zoa0m6 k's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters ;i:sy v4m /wu1b 7km*jab:r svare each given the same charge, the electric field (E) midway/ kv1bji4wa:m vr ;smus*yb7: between the center and the surface is

  A cubic block of aluminum rests on a wooden tabls4llp8*widdzc uepo6vm 57./ e in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the bp4z lm7ve8 5clsiu. /d6*wo dplock's top surface?

  If a conductor is in electrostatic equilibrium near an electri sdrzypd.l.77 c charge

  A positive point charge is enclosed in a hollow metallic sphere that is gru*-yz)ritavceha 5: 8ounded. As compared to the case withouthvcr8 :au a-)yi 5*zet the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in sta3bx(tv +he 4dptic equilibrium.

State Gauss's law.

  The charge carried by one el2 r0yimstd4 ;pectron 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 protj1*zj 6,gf sxtons than electj gztj6 ,s*1xfrons does this piece of plastic have?

  What is the charge on2w r5uqb1a;lf yiu6b:q i1 evdxl h7(+ 1 kg of protons?

  An atomic nucleus has a charzhdn1f0u l1o1z-(fhs.xi fv0ge 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 valuescryr dv; b-p+amjg+h ,u6f/,k of 2.0 and -4.0 mC, respectively. What is t bcgu6;a+y v,m rkpr,+jd/fh-he magnitude of the electric force between them?

  A 1.0-C charge is 15 m ( dospsh) i4adw,3i(n from a second charge, and the force between them is 1.0 N. What is the magnitow)d3 np (as,(d 4hsiiude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are thev,gre/ez 1w795 k eutiy?

  The force between a t :b1ysmkp pt 9+k5xp6mm97bs$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apary,6ex;mree39ief e 8l t, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, wha ee 6;ee9i,rf xm3y8let is the electric force between them?

  Three identical point charges ofpa:tb1d*8c3u,sw ) sp9nf jkf 2.0 mC are placed 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 which acts on )j,uf3ak wdnsp*c8b9f tp :s 1the charge at the origin?

  Three point charges astm+b a a1p:a(re placed on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 5(s+:1amta apb0 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 follow iylx,-19j ty *mql4kx yr5gb*ing 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 magnitugryl yb xli-k1yq*jx54* 9 mt,de of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a s0a 6mqqu5) ;i zw2lwtjhfy9;recond point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acrt h;iz;aluw692y 5 )f qmq0wjts 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 6zze;k0qm8 vg4rpbytc75 6 k7xnniv2 (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chagc5y 08ev7kbnp t n;mr6i2k46zqvx 7z rge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC isgzo7,- bsk,rh at (0, 0). What is the direction of the net force on the 5.0 nCg ,bho7 zrs,-k charge?

  Three identical charges of 3.0 mC are placed a9-dv3fins). eg/le7j c bcb h6t the vertices of an equilateral triangle whichf9 ndcbb ije).v/6 7-ghlces3 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 b ql8 ;cjnyz5 nwn)aru1ou- ,:and +4Q, which are separated by 3.0 m. At what point, on a linlc , ybqr;juo8-:zuw1nna)n 5 e between 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 a64,,vczks v25 r ip5nlami 9ma +9.0-C charge is at x = 4.0 m. Where on the x-axis can a thirdm6,lav ,a 9np5vk5ri2m c s4iz charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x,s+bwebqb z10 bpyp(h :(fsu+ = 2a. Where can a third positive charge +q be placed so thu( z+ 1bp,bbesy(hs: 0qw+ fbpat the force on it is zero?

  A copper penny has a mass of 3.0 f mn;;ghe/clc.0s zrp /;oio8 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 for pemurvp3+gtw.bd. c0b5-/ , fudau)rce of gravity by the attraction of a fixed proton some distance above it. How far au .mrd)d+p-.gtb350fa urcu /v ,bepwbove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threadbrbg81hb(epiz s/gy/m(3 ds7 s which are 30 cm long. Both are given identical chag 8d(b3gbhssm7p(/bzi yer1/rges, 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 electrmoon df-wy)6i .hpk*+ic fiedoymnh 6-+pi w)f*.okld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of thel qpg32q5; l,xxbtp) v electric field at a distance of 1.50 m from a 50.0-nC chvgp,xx53 bq ptlq) l;2arge?

  A 5.0-C charge is 10 m from a small test charge. What -0wxb5)jin- e : cdvgiis the magnitude of the electric field at the locgx-:5encvwb-)id j 0iation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of thqghjmhl xu;kx5v 2-1 3e electric fiehxmh uq5-k3vg;l 12xjld?

  A 5.0-C charge is 10 m from a small test charge. What is thecuw ;1ltr7 03,gl0rxq(wfxox1r o-b x magnitude of the force experienced by a 1.0 nC charge placed at the location of the0 7lrw(-q ; lx1r0t r oxxxwgf,3bo1uc test charge?

  Two point charges each have a value of6wgpv: ytc0bf bxxoa5z 103td q :yl2. 3.0 C and are separated by a distance of 4.0 m. What is the elect: dxc6obxw1qfat.50pyv tz 0ylgb23:ric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC cd:a n-kw vn-rd ,bk)717jdmurharge is placed at the 50 cm mark. What is the electric field at the 3un1 v-mjdrkwk-7nadb ,:rd )70 cm mark?

  A 5.0-mC charge is placed at the 0 cm t+*gtm e5b.tumark of a meter stick and a -4.0 mC charge is placed at the 50 cm mt5* gbem+t.u tark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 m(;t7ahitb;6fpyct m3 * wawjy.,dnl8C and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway by (7jmy,ibctnt;a8ld wp;3 wh.f6*at etween them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Th,i3 vp4g/viwe;m i )hfe last corner iw,pv4h mvgifi;3 )e /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 onxbab+dv-fulq yb8m9 /g6 . ij;8/twwe 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 field at the square's c;8 +j//qbbdleu xf9 gavty w -w.i6m8benter?

  A force of 10 N acts on a charge of 5.0 mC when it is 2my4 y9 xo0pl9 tbis3vplaced in a uniform electric field. What is the magnitude of thisy24 9 piv3lyt9msbxo 0 electric field?

  A particle with a ch w,z me,s ysu/p*hen1.arge 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 ma,3yzvco 96o zz1likx (ss 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suoixoz9kzl6 yvz 3,c (1spended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The 3z,iuuu vif:.koln::ball is placed inside a uniform electric field, anin u uo z:u3.ivk:f,:ld is 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. What is tcu y4)tkksr,k8ldd 36he magnitude of the electr6sky, r8ltcu4)dkd3k ic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. *5zvbako b 63sn) 0xneopr/s 1What is the electric field 6.0 cm from the center of the kszoa6)n3s *n pr 0/o5b xebv1sphere?