State the law of conservation 90.n /mb xlfztof electric charge.

  Is it possible for two negative charges to attract e. y1hwueep/o dr:h* 8yach other?

  Is it possible for a positiv9bn+ qfv3z7u qe and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During th8prwo71yh a,n e process the glass rod acquires a positive charw1o ay78hrn p,ge and the silk

  A proton carries a

  The model of the atom g. 9r+jq x7yx,yzxgs ,shows a

  A neutral atom alwaya )zycp4+chfc) 6evo3 s has

  An atom has more electrons than protons. The atom isbg;syq2m d*/i (9pg:iupzki 6

  Materials in which the electrons are bound very tightly tkoju,y2o 2 m0/cyn0q mo the nuclei are referred yomo/2 2,myqn0 ukcj0to as

  Materials in which the electrons are bound very loosely to the nuclei acned163z:mb end can move about freely within the material are referree c z:m1e6nd3bd to as

  A negatively charged rod is brought near one end of an uncharged3)5xjggeps ;ln 3x5ftykt;o) metal bar. The end of the metal bar fartj;x ;p5te)l3g k)goxtys3fn5 hest from the charged rod will be charged

  Sphere A carries a netbm2twp/tkz) z9bp y e7td ,n5; positive 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 statement is cor7z)tkd ,29;tb/ezp ynpwt5mbrect?

  How can a negatively charged rod chwmildb -n/+;w ra,+au arge an electroscope positively?

  An originally neutral electroscope is briefly touched wm y4ugx: r/fy k7f+kg(ith a positively charged glassy4r(g:k+7m/gyux k f f rod. The electroscope

  An originally neutral electroscope is grounded briefly while a posnjdlt7 vdjkt4nlok)26- go;:itively charged glass rod is held near it. -j7l tk64;o ldn2j kdog)vn :tAfter the glass rod is removed, the electroscope

  A positive object touches a neutral et afqpym6(+qvu-, r8ilectroscope, and the leaves separate. Then a negative object is brought near the electroscope, buta 6m(ivuqr-f8y qp +t, does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insu jq8h4 ;(svcfhlated 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 8vq ;h(c4hf jsball, 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 constwhcs-+/xo tzz( g kg6-ant $k$, which appears in Coulomb's law?

  Two charged objects are separated d5fj -r0x w9cdok)2,.zzinum0 3 qapbby a distance d. The first charge is larger in magnitude than the second charg ,co u 0raxz z-d5mqkbnf iw0.9pd23j)e.

  Sphere A carries a net charge and s+/ xkvg rt3s*+n kbr4ut+0 kcsphere B is neutral. They are placed near each other on an insulated table. Which statement40r+*t+kkcg 3n+xtkvsb usr/ best describes the electrostatic force between them?

  Two charged objects attract m1* r,ngg zbwy:rd+a :each other with a certain force. If the charges on bomwny za:* gr1b:gdr,+ th objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mu rodtym21gi p aj u5;lbwo.h2)h(+r-stual attractive forces of F on each other. If the charges are sept;o)r5+ubrymoji hpw 2 12s.d(a-l gharated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with j6ynpp7e94 ljl0 wqp7a 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 one40p j y e6w77jpnpl9ql-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happezg-: qp m22lkqns to the magnitude of the force on the proton if a second z k-q2 lqgp:2melectron is placed next to the first electron?

  An electron and a proton are separated by af:0g/ cz0eaia distance of 1.0 m. What happens to the iazc/ g0fea0 :magnitude of the force on the first electron 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 happensathm(3yt9,zz4 0 c k8 ui-mjws to the size of the force on the proton if the ei0t ju(-hzm 3,wz8 49t yackmslectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a sytrj5es1f(itx)8+ ey econd 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 positive8ti jx+e ferys1)yt(5 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 22i99b hywxny is placed 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. Whayh2 n29 b9wyixt 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 isw ova gpa5gb*)ca*0(31 baa n)n pl9jf not a vector?

  At twice the distance from a p41oo phdmp/ z-mb e:xg-zm8,qoint charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative al3hx /7fy w1 tnoiehl3ni8pm ) *9vy+cnd positive charge along the line joining the two charghpyti8+)yxc3 n/lni1 hvf7e m*9l o3 wes?

  Is it possible to have a zero electric field valu9v t)rsng e-. zippd8(e between two positive charges along the line joining the pgzd9e i-.)tr v8n(pstwo charges?

  Electric field lines a10vb.5ql+oc4+r fdh jmdb7c 4,vba wnear psitive point charges

  The electric field shownsqb/wws flt)142 58pewvk 4 zc

  Can electric field lines intersect 8stqa4 1:w nswin free space?

  A solid block of meta- y 5-*jufek. iyk2lykl in electrostatic equilibrium is placed in a uniform electryyf2i *5.e klkj-k yu-ic field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of e3 ngv7.5fpstb qual diameters are each given the same charge, the electric field (E) midway between the center and the surfacepb35gtv.n f 7s is

  A cubic block of aluminum rests on a wooden table in a region where a uniform. ks8 ijv)fki+ electric field is directed straight upward. What can be said concerning the charge on the block's top surfji si)v.f8+k kace?

  If a conductor is in electrostatic equiliecietm8j* 48s g4jbe 0brium near an electric charge

  A positive point charge is 5pgw; jc8 q7 (syvc-mgenclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point -c7wsvjm y(p;8g cq5gdirectly above the hollow sphere has

State three properties of conductors in static eybaa) jq+.idylf 1f b0lk.0 a+quilibrium.

State Gauss's law.

  The charge carried bybwp(6 54myp5gt h8ps ercah9+ one 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. t:) 3stari5 d;k3yysc How many more protons than electrons does this c sd y ayr:5itk3t)s;3piece of plastic have?

  What is the charge on 1 9x )d(eu; h3r*lu+w9nfsssl fkg of protons?

  An atomic nucleus has a char9p/2np f; ldylge 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,zuy*hm iqf,.j+jdi1 5;uny 5v respectively. What is the magnitude of i5,fun;.zivyu* jh 1y+ 5q djmthe electric force between them?

  A 1.0-C charge is 15 m froupo mjxph:-ueph .46 :m a second charge, and the force between them is 1.0 N. Wh.phuo:x6pe-h: mpju4at is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of wayqdup 0.+5uaz4w70p.lrr x 1.0 N. How far apart are they?

  The force between a +bakk,9y c r9ra o,*,gzj gijv)2c 5kg$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart,2-ri l2nb-eluwj9 3vi experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric ijnuw-9 -3r2li2lbev force between them?

  Three identical point charges of 2.0 mC are placed on the x-axi +sgiqq,bn01gzr0p p/s. 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 z0qnq gsg1+/pibr,p0. 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-axis. A charge of +2.0 mC is placed a skm(,ag(wy7lt 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 elecgy k(sa m,7(wltrostatic force which acts on the charge at the origin?

  Three point charges are locate) ju0kdz)mb r/d at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x rmzbu0k)/d) j = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the ctwgfl3zhcm 92h570 uhenter of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force zmhc957huw0h23g l tfof 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 2o.zc+b(zqb/vs ;ahn xy. a+i is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.z.qosiy h bnc2z a;ab(v++ /.x0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 *2rku2nrzn( t = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directionur2trn*nz ( 2k of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral t4 pji: 2hy l08yxw2vrxriangle which measures 30 cm on a side. What is the magnitude of the electrostatic force 2 lj8v0yx4rpw i2:xyh which acts on any one of the charges?

  Consider point charges of +Q and +5t)zpm;n;ii zphqf-kw a/g 994Q, 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 -Q such that the 9h-;/zwzpm)i n;kqai5p ftg9electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +99zph5m nh/fzf /ej+q ;.0-C charge is at x = 4.0 m. Where on the x-axis can a tjh5f+n9; qemz //hzpfhird 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 = 2a. j)izg3i ooms*ef,*k1 Where can a third positive charge +q be placed so that theo,f o) *zie msgj1k*i3 force on it is zero?

  A copper penny has a mass of 3.9 u;5uk1e ;dr)njfn:sz, r;jz9 na spg0 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 attractbc ;xzmct f7:.ion of a fixed prozmc;7.tfx:c bton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are+u9f5 klx8me7qr 3i yml1xyrl am/;g* hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle beix13eukxmrf*l9 am yl+ q5yg7l mr/8;tween the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus ha ji/t e)vhl5f, 2:3kv-ezted ms a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from t/ id,3h zj2mvfket5l:e v)-ethe nucleus?

  What are the magnitude and direction of the electric field at a distance ofai* ru +zg:/o- yhp m q3-g2iabf.b5dr5y0iwf 1.50 m from a 50.0-nC charge?/mfi a3h qgbyrp*-a+w 5u g.oyz:rb0i 25di-f

  A 5.0-C charge is 10 m from a small test e8 fprx0re43 o.;vrhl94jayvcharge. What is the magnitude of the electric fi8e3 r ehyp4r l.o;av 94vfj0rxeld at the location of the test charge?

  A 5.0-C charge is 10 m fromm jqssb(+ig*-:xl72fd u (yj m a small test charge. What is the direction of the electric fie* ( j msbx(ljm7+:dsquyf2-igld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnf, t af(ienx y4n))dk4itude of the force experitd,a( f4knf y) e)n4xienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated b;if aoo* s:kd.y a distance of 4.0 m. What is the eleaof.: ikdos; *ctric 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*cns o)tsycd r7g(6 u4.0 mC charge is placed at the 50 cm mark. What is the electric field g7yr(*4tsu6ds)c nco at the 30 cm mark?

  A 5.0-mC charge is place znvk* m(/rp8qt3 3 dani613wrqx 8gkwd at the 0 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 c31ta* 363wqwnzpkn krv ri gxq/(8md8harges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC. siw,xffi:tan* p: 30) eudtb are placed at x = 0 and x = 0.20 m. What is the magnitude of thexw 0ei:d ipfn u) tf:.b*,ast3 electric field at the point midway between them?

  Three 3.0 mC charges are at the three cy5f;1.,wy j.vjfl o( 2qhhfkmorners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fiqfh vjlj hm(fy1 ko.;wf.52y ,eld at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are p6ih f.,hdzv q/laced 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 qv,6zf.h/h dicenter?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in anb;q.hpa*a*4 ce -ox j uniform electric field. What is the magnitude of thisxo. baa**cje;- np h4q electric field?

  A particle with a chgufhmd9xjt ; 5/bq dra 4gr708arge 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 electric field of 6000 N/C y vd3z.kah o51c+bs;h pointing downward. What charge must be placed oh+3 dhy 5ob;acsv.z k1n the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed dqc q2 ly wblj5-,y*lo4k w16finside a uniform electric field, and is sus6wyy41-2q jbll,cw l5 kfd oq*pended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cmgr*/2: .vjeoj v;q yvl carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surjjq.*/ lg ;vyvv:eo2 rface?

  A metal sphere of radius 2.0 cm-0li0mc31qvm:w/c cpmqo+ a k carries a charge of 3.0 mC. What is the electric field 6.0 mlqcmvc0 aw: 0-pic1kq+ 3/o mcm from the center of the sphere?