State the law of conservation of electric charhxe9w h6znhb 5vt2:k3ge.

  Is it possible for two negative charges to attv.ut7wac :n1w*w5nrnract each other?

  Is it possible for a positive and a negative charge to attract each other?u 1g szl7wd+o*

  A glass rod is rubbed with a piece of silk. During the pr c 8l2h)(qturuocess the glass rod acquires aut)(u8 qh crl2 positive charge and the silk

  A proton carries a

  The model of the atom shot(8obv -j rna(ws a

  A neutral atom always fly er. +dd u p+8jpvsg5607ughas

  An atom has more electrons than protons. The ;hgdzyc39.l d atom is

  Materials in which the e,0vtxg 1ol5ljssg w8q;::qy6b asq;-yj e/mk lectrons are bound very tightly to the nuclei are referred to a51;; y- 6qo s8g jbgq:eyma,swxjls:vktl0/qs

  Materials in which therh;j4 r0r0aa76a69fmxrm rqpfb+zh9 electrons are bound very loosely to the nuclei and can move about freely within the material are refer6p69b xr ah7j9arh fra+r;m 04q 0fzmrred to as

  A negatively charged rod is brought neargv eb .f1/k8l vrzl5 9c9yugj)ql+e 9b one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be charf.v e/q9)8lg j ul+gr95lky9be b1vzc ged

  Sphere A carries a net poy/ -is-s+sc2erl rr +dobcg)-sitive 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 stateme-de + s/r sl)boigr+-scycr-2nt is correct?

  How can a negatively charged rod charge an electroscofcf* mxok3l c0hspa+ i.x++0npe positively?

  An originally neutral electroscope is briefly touched witn;u:rmb qzyt( vx2. (zh a positively charged g(vm zxn; :2y q.(btrzulass rod. The electroscope

  An originally neutral electroscope is grounded briefyb n.gk 1s6zzni0-:ur ly while a positively charged glass rod is held near it. After the glass rod is zuy:n1n60-ir b.gsk zremoved, the electroscope

  A positive object touches a neutral electroscope, and the lea4f )7)g1zfusig0s6of + pf wwoves separate. Then a o14io pg76fgu0+sfwf z) wsf) negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed 8xm0wz)m b:a1ue bclvnyf;+ +on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touc0;amf:+mb wln8 x+z )e 1ybucvhes 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 ofh qb6f)2y v5+bea 8akmck79rn the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are secw5q jy- 8)ngm,txq6 /f s* h+vlavt+xparated by a distance d. The first charge is larger in magnitude )g-txjx + hvym/68q*vsa+, nqtfcw5lthan the second charge.

  Sphere A carries a net charge and sphere B is neutrd zujinbx2 00 j1u.oq2al. They are placed near each other on an insulated table. Which statement best describes the eind j1 o.x2jzuu 20b0qlectrostatic force between them?

  Two charged objects attract eachow6v fpxq-9p(o s-pkn ls2qb(gx4 y*,eo81g x other with a certain force. If the charges on both obv g-qowks2pn*bfog4sx -oep(6py1q 8 l x(,9xjects are doubled with no change in separation, the force between them

  Two charges are separatedqi6 *x gd:fr;nl) iffcw38t68lyl *u v by a distance d and exert mutual attractive forces of F on each other. If the charges are separated tlwg63 8)in6fiyxlr:8dl;*v *fc uq f by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a fbjm+7)f/zwa borce 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? Tw+)b j f7az/mbhe force is now equal to

  An electron and a proton are separated by a ;fi*epwya3otyb 8 g 2t8-soq(distance of 1.0 m. What happens to the magnitude of the force on the proton if as we-t;3*8og (q bf8ytpa 2ioy second electron is placed next to the first electron?

  An electron and a proton are separat4dt6m*69bcpmi gh sdc7l 1)*jx00ygx; rf yo wed by a distance of 1.0 m. What happens to cw tm6olb70ydxfg)* sri 61p d0*;x4 gcjy9mhthe magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are sepasc2z 3jw, lr2srated by a distance of 1.0 m. What happens to the size of the force on the proton if the rswlc2 ,jsz2 3electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Whe ud,o9m16*wd ( axtvxon 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. Wh*aw ou(v6,x9dx1 mt odat 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 of an equilateral triangmz,3a7fh u k4fgt9z;kle. When a second charge of +Q is placed at one of the triangle's vertices, an electroa9 z k, z;tguf7mkf3h4static 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 placed at one of the other vertices?

  Which of the following ij tq/*kw,k*g.5 vxbkmr :.mcas not a vector?

  At twice the distance from a point charge, the strength1 c xs+- +cii4es.jvhehwpu, 9 of the electric field

  Is it possible to have a zero electric fie+iqnmjavxn-dw4 ym0 e9: d/,vld value between a negative and positive charge along the line joining the two ch:9 / ,-+e0va4njmxvmq wyddn iarges?

  Is it possible to have a zero elr:hw*9 bpr01/ cvlbu xectric field value between two positive charges along the line j 9c pvbh1lr/bw0ux:*roining the two charges?

  Electric field lines near psimtcm-jz1(e- ttive point charges

  The electric field sh euowgernw 58vv*ff+ z)0ih )-own

  Can electric field lines intersect in.2qs)sd xzl0 b-s6ba (cuwq8 k free space?

  A solid block of metal in electrostatic equilibrium is placed in a unif2 x6 1s es)72.:d5qecuqoqmuy rg ss)sorm electr)d 7esss22qr )msxgo: eq6q. 5cuysu1ic field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sph8iq;,0qeqmi25 exeb p ere and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway betwem ei0q52pq,xi8be ;qeen the center and the surface is

  A cubic block of aluminum rests on a wooden t)ryd9ei, 9hrlc 5fh n9able in a region where a uniform elneiy clh9r5)h9rd, 9 fectric field 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 electricfajm xnw*n1v q29+:8)yvmlde r13uoy8-tw o j charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundeasvza ws r)g4ty, 6uw-8a)g9bd. As compared to the case witho-4z6)9w , r)vyassatuw8 ab ggut the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stati9 cwep1bq36 +aa:k jpec equilibrium.

State Gauss's law.

  The charge carried by one elec2 ;r ie r:ugdjx iob3d15ftk76tron 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 mor qdvr)j s1x.x9e protons than electrons does t.jqdrs91 )vx xhis piece of plastic have?

  What is the charge on 1 kg ona wzjc( -u40af protons?

  An atomic nucleus has a ch1phjeat; n:e(-r4o sdarge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separal: yu7xwpyn:m7bl ,yo(+d7 ydted by 1.5 cm, have charge values of 2.0 and -4.0 mC, res(dl7 nu7woybymxdly+p:,:7 y pectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a )f83+ubybb) 1l n-3w iinqcu vsecond charge, and the force between them is 1.0 N. What is the magnitude of the seco8b))cb3iq1w yubu 3vnl+i-n fnd charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are theyno,ag 6w6 e do-yp:gb /jt5ni-?

  The force between a (7sd; aki7flcrq(7md$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, g-kzv h; vslw,jr+8h* experience a 1.0-N force. If they are moved to a new separation ofsh8,l+kh vzwr vgj*-; 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chlntuegmy4 c q7e/r 57;u y k0ab*k-jw5arge 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 mlc/kwe u ;ryyt7ne7 ugj5- k54bqa0*acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mCwty:au s:9otqeq6ll am1:4)o is placed at the origin, -2.0 m C to the right at x = 50 q t69sytw41mooea:l:)u:qal 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 follv7gxx4ftu)dp; m3 0*zhowa ( oowing positions: Q1 = 2.00 mC at x = 1.v0p h4)dxa7f zow mout3 xg*;(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 charge?

  A point charge of +Q is placed at the center of a73q(b;l g /vj6o igabe 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 pov(qbg/el;73j6oi ag b sitive 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 ww7v)p1n/ jue = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is/ 7w 1jpevw)nu the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 07ot dly3h3hr2.10 m); Q3 = 5.0 nC is at (0hltd733o r2hy , 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed atssyu4k4.cy e0c +t-gd 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 one of the chargy4k-4s0 sct.+c uydeges?

  Consider point charges of +Q and +4Q, which a v4m0wh4y3,ocuy3p gdre separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q3vy4youdg p,cwh30 4m 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 x =4+ dg,7hj7o0h il efxp 4.0 m. Where on the x-ax +xo7dh,i704p jfelghis can a third 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. Where 9r,e s kx,(cmncan a third positive charge +q be placed so that the force on i9(eskc m,rx n,t is zero?

  A copper penny has a mass of 3.0 g. A te/:9t p -nint yp4gf5yotal 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 tzly7.4n;-j7 hu ys*pg mrils :he force of gravity by the attraction of a fixed proton some dm. yn:zr7-* ysi7lgsu4h lp;j istance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres areq9i/f2q1 xyrf5a;nu;aj yfe ) hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces the);a f2;f5a j/nq1uxif9ryqye m apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a rbs tz,4db,- rcharge of +40e. What is the magnitude of the electric field at a distance of,bz-tsrd,r b4 1.0 m from the nucleus?

  What are the magnitudc.cyk6esc; i-e and direction of the electric field at a distance of 1.50 m from a 50s ic6 ecc.-;ky.0-nC charge?

  A 5.0-C charge is 10 m from a small tes6qonv.u,+b p .g8 aordt charge. What is the magnitude of the electric field at the r.6 d on a8gv+.pubq,olocation of the test charge?

  A 5.0-C charge is 10 m f dit/ z53gyhws j.qc .do b;q,5u)mke1rom a small test charge. What is the direction of the electrid m,uszk iqd15 yb.w3ct.;q5goe/ j)hc field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnivz iz1p 6u/c9ctude of the force experienced by a 1.0 16 ciuzp /vc9znC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance of r69hk(b( x32h (afphvb lyt1f4.0 m. What is the electric field at a point midwaxtb 9p6hh lv3k b((fyr(1ha f2y between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark5sct5by2 cwv;5; tu qn of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm5vwcyc 5;u; snt b2qt5 mark?

  A 5.0-mC charge is placed at the 0 cm mark of a)r hzfl6 g(6iqx,l ksz)amcm 0qgx,8( meter stick and a -4.0 mC charge is placedqz8 zl(k, qxrmh))x0c f i66 m(gs,gal at the 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 placed atvrq+nabb;cy 3bp,1/1v) f j sc x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midwa1/qj ) s,+v; bnpf1cy c3abrvby between them?

  Three 3.0 mC charges are at the three vy e-fqwps6*1x/k,1 v1zrmd k-(o(c4h cej lzcorners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charg (1 d(fs cz4c/q1z lve1kxorvy-pm-wk*hj6,e e. 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 cov9. i gq.6xkalyhp6+j 7wlb6wq jzm66rners 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 +gb pl6jx6w67m 6jzkq.hy i9 wvlq.6 aelectric field at the square's center?

  A force of 10 N acts on a c lk5q /3a qxcwct0y71wharge of 5.0 mC when it is placed in a uniform electric fiel3aqxc/y1lq c0wt7 wk5 d. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC hag*yx y/u:v ggoi oxi shuz84c2nw 5.9)s 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.ainwi8- (otbt : l,fw6kt*h3o120 g is placed in an electric field of 6000 N/C pointing downward. What charge must b8o* : w6- i,ob ttafi3tklh(wne placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Thyq i:5vynsiq9 bm*88te ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magniv*5 yis:8 qtnibm9q8 ytude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC.yi8n)y5d ;66croz iltjzti/( What is the magnitude of the electricdzz65ytj ) 6/ liy;o(itrnic8 field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What i/7 q-/ wnrexz7q1 njfas the electric fie wx f/anq r1qjn7-z7e/ld 6.0 cm from the center of the sphere?