State the law of conservation of electric chagt ;qegg);y53irtgs6 5 c6na urge.

  Is it possible for two negu rfidshuq 9 2nmd /;ja5 titaq4+q15;ative charges to attract each other?

  Is it possible for a positive and a negative charge to attract each othqhph *o80p3 exer?

  A glass rod is rubbed with a piece of silkx 15twbp ;2boakic+i5 . During the process the glass rod acquires a positive ch;c52xitk pb+ 51ab iowarge and the silk

  A proton carries a

  The model of the atom shows7rmw1vnq nd :9sia1u* a

  A neutral atom alwaygm;d q2i :+phms eh,j9sb4if6s has

  An atom has more electrons than protons. f. e izx 6* h*ajzq(*us0iaov* The atom is

  Materials in which the electrons are bound vervym2td*9 us2a p:0 ha +cezj;sy tightly to the nuclei are referred to :s *sz +v09apujh 2t2m;y deacas

  Materials in which the electrons are bound very l,n3ssroh z0 y4oosely to the nuclei and can mov,osz yn3h0rs4e about freely within the material are referred to as

  A negatively charged rod is brought near one end of 2rp*nu /i( uhian uncharged metal bar. The end of the metal bar farthest from the c/2uh (pii rn*uharged rod will be charged

  Sphere A carries a net positive charge, and sphere B is 0m 3qqh i7oq5aneutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is coaq0 5qi7m3 hoqrrect?

  How can a negatively charged rod c0s zm1(-6c ay vtmt;syharge an electroscope positively?

  An originally neutral electrovhfyqk7 /5b yx:aap/kpp7.20 vdoa k*scope is briefly touched with a positively charged glass rod. The electrohyk*0/k: ppoa pb5d7vy 72/q fxaav.kscope

  An originally neutral electroscope is grounded briefly while a positik c5ogn+5ktpm2xiz 04nnp,4 ,,b iij hvely charged glass rod is held near it. Ag,nx4itnkp m5c4oi2,i n5k+zh ,0p j bfter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the 5paw hl./n+awleaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the lewwa +h/a n.lp5aves?

  A large negatively charged object is placed on an ins/ f fcu 8u855zb(j(cjxzltot/ps:uh +ulated table. A neutral metallic ball rolls straight toward the objectc :xu (j+ u58/stotzh(u c/zf8lpbj5f , 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 h8) x-,nqw +jvx9z7(u(aq9lg jhns aothe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largbdlz c8 ora,8gv,8 m(fer in magnitudfoz,v8a8(g mc8rd,b le than the second charge.

  Sphere A carries a net charge and spz2g. rpv+ *ptv)z*ve uhere B is neutral. They are placed near each other on an insulated table. Whivp .*2zrp*tv+z)v ug ech statement best describes the electrostatic force between them?

  Two charged objects attract each other with a uje,29uir 5jxl4 l+ukcertain force. If the charges on both objects are doubled ,uuux4jlek lji25 +9rwith no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attr8p3v wacs/d 6trb+pq 1active forces of F on each other. If the charges are separateq/b1asr d8+wv ppct36d by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forcfo -nwpn93b dp8h 5o:5m v,dake 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 equal tad5nkpwfop do 9h,3-b:8n5m v o

  An electron and a proton are separated by a distance d ;w;ton7mv0b; jtz0s(o zu+hof 1.0 m. What happens to the magnitude of the force on the proton if a second e+(00wsmnzo;bzvt; t;j od7 hulectron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1z 7a)ftqjfe q 6f 5c-zc4pr(2t.0 m. What happens to the magnitude of the force on the first electron if a second electron tpa cjz2 56z)feq r-fc4fqt(7 is placed next to the proton?

  An electron and a proton anscxy 1o68zj/ nu9n2are separated 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 to2nxs6y n8 1nc/u9 azjhe proton?

  A point charge of +Q is placed at the center of ajb8fl o;ncl,;:n* 0mr ph /lip square. When a second point charge of -Q is placed at one of the square's corners, it is observed f nj:pipnc8;b/ ,lh l0;orml*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. 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 of an equil )1 dh7l2qbnnfateral triangle. When a second charge ofbqn21n)hlf d7 +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 third charge of +Q placed at one of the other vertices?

  Which of the following is .,xdr/ s emiob2nv(q* not a vector?

  At twice the distance from a point char*0d)vmx abo9 fge, the strength of the electric field

  Is it possible to have a zero electr,fw4(sm i frirqy5i --ic field value between a negative and positive chafsir (-, iy4-w 5rfqmirge along the line joining the two charges?

  Is it possible to havur:* l- wjd9nge a zero electric field value between two positive charges along the line joining thu-g: j*nr9 dwle two charges?

  Electric field lines near :go zp4o.iye: psitive point charges

  The electric field shows /ylo5 jmup/)n

  Can electric field lines intersect in free space?vs0iz7i3 y,v w

  A solid block of metal in electrostatic equilibrium is placed in a unifd4 q8fk*kdd 2aorm electric field. Givfd 8*d dkkqa24e a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow met/m3fl rkmuj0zp 3 wb1fb:t4s *al sphere of equal diameters are each given the same charge, the electrsbpz1l *k0 u j/f bm:mtf334wric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region d kl p 8mu.:swudp9(/gwhere a uniform electric field is directed strw.(9u/ plkd8:dmgsu paight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chaxe.oy6 3cn/ tupq .4ejxnlyg-q/ p92vrge

  A positive point charge is enclon,d iia./f akd(+bu 4osed in a hollow metallic sphere that is grounded. As compared to the case without the hollow spheru+.i, d(o fkana/i4d be, the electric field at a point directly above the hollow sphere has

State three properties of conductors in--u 9h f,ww- hd,mupbp static equilibrium.

State Gauss's law.

  The charge carried by p2 leme25g)p wz*efy,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 chare3 hh;ioi6fr m9w9x, vge of +2.00 mC. How many more protons than electrons does this piece of plastic 6hh3feviim ,x9wro9 ; have?

  What is the charge on 1 kg of protons?yiefn/5vujwlewyk98b tyo * (4v9e 58

  An atomic nucleus has a u 7z4+os rs(gkk/(ql br/ vh5drd/j, dcharge 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,ppp57k kc71 aw have charge values of 2.0 and -4.0 mC, respectik71p pcp57kwavely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m a4;zom 4wqius gxz7g,a*.dx0 from a second charge, and the force between them is 1.0 N. s*d;g xzaau0,4qioxw4z.m7g What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apa z g+zf2e.sb11s kv:qjo .8bddrt are they?

  The force between a v ) ( k*rjlluk0 f z+/c0l:kkc)sf3rwe$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, expe 85i6r b w3b6temih1wmmzd+kjs j610mrience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is thj6wsei6h1 r6 mmjb+b t1m diz0w8k5 m3e electric force between them?

  Three identical point charges of 2.0 mC are plzpd j (oh*4 uyyuat/ks4/5q ;m; m/dgjaced 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 thm/*54/zuakpuoh ;j; 4 sm jdtyg/ydq(e 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 on the x-axis. A char ,,kj muckh weyi;;rb:e9z9a7 ge of +2.0 mC is placed at the origin, -2.0 m C to thrz9cw ue,b9ye jk,ka7m:i; ;he 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 the charge at the origin?

  Three point charges are located at the follobpi+k:tfn72s wing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 :+itb2pfnks7mC 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 a s9fpu,3stw()3v bfo9dfj yr.xquare, 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 x3tb( ,f.spo9rduf wv9 yj3f)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 ai1twm2u p4utv8p /z6g t (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 ntvm6 2wp4u8 g1/zui tpC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = w3h:3eg -ev3nqk -by 3 b-c4fssvk8uz-1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charg yh beenb-su 33qs-3cvkzf :-3vkw84 ge?

  Three identical charges of 3.0 mC are pla9zi3ux -ok,:tl2sy7v hlz4 imced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the ez,tk2oi7 l- uym:39vl izhx4 slectrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m(n eeurl ,;drg9qu(/i. At what point, on a line between the two gi(rru e qu,/ ne;l(d9charges, 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 andyh(of 7doj-i5;s8c l2q ff ir( a +9.0-C charge is at x = 4.0 m. Where on the x-axis can o- d(f2(;jiicq l rfo5 8fhs7ya third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is plach (fjq +,()bs u5vdufced at x = 2a. Where can a t+fhcv,us( fjud5 b(q)hird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A ps2nygsg:)y6hc., a) ,v qxyrtotal 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 o3)devi3tfm gf b 76r0up against the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is fre7 id6f3gv0b )o m3tthe proton?

  Two 0.20-g metal spheresxt8 c3ll7 rn15q92foaz ,nfmi are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrosta 7r5m19x 3o, nf2linc8 alqzfttic 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 el6qts )*pd3rq tectric fieldt)sq *pd r36tq at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of t6l93jb 6 oxof ycv6w.nhe electric field at a distance of 1.50 m from a 509wc.yl6oon6jb 6 fvx3.0-nC charge?

  A 5.0-C charge is 10 m from z: sv/z+ ie f1u(q j:w vf,xivq/p-p0ca small test charge. What is the magnitude of the electric field at the location of the test charge?x,/j1fepp(svi+zf0vqzi q v/u cw-::

  A 5.0-C charge is 10 m from a small tesiorfnk;4+a(sm9.u7: u mcx to (c, ndnt charge. What is the direction of the electric .o9:,;nftukd47as(ocr +mn ( mcx nuifield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the tfupe ;2yk:kx.sk: m;force experienct;k fxyk:p:se;.k 2mued 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 separwr4pf/ sg6f+tated by a distance of 4.0 m. What is the electric 6tgsfp+ 4f/rwfield 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 c p941mvf kp4u ;ysb9cbharge is up 4smbkc 4;y9fp 1bv9placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 m8dzebgj 4n(o .C charge is placed at the ebjg4o dz(n8. 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 andq(nqtbn,4mq:( guk q: -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the poinu:q(tq gkqm,n bq (:n4t midway between them?

  Three 3.0 mC charges are at the w 065gpc;b+ tcx2l ntythree corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the e+y l pw52x0tc;tcnb6glectric field at the center of the square.

  Consider a square which is 1.0 m on a siykak 6 mg,k9rl zkbuah.x 0*(3de. 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, 6bh,lk a3kzx 9 y.ru kgm*(ak00); -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 5.0 mC when it vy 5b7*nidu0rbw/z) 5s1c krg is placed in a uniform electric field. vb z5bw5s iun)kyrrdc *7/0g 1What is the magnitude of this electric field?

  A particle with a charge 3nndftmei0wj tmqix vj/r7 m;b/68 27of 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 t10k8mzktm20w: yos,if l u(k electric field of 6000 N/C pointing downward. What charge must be placeds,tmoyziu wm kk20( t:k f08l1 on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chargecwb7xeo3t6ay uo 5oyzt: d0 ,7 of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of eyc:oyzot76 3d7a0 ,xotbuw5the electric field?

  A metal sphere of radius 10 cm carriesx e3j5ub5 acrg )fkb5q1uj0tplo/-.z a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from thetj3.-5)k0pf15 ob xa5ej /gzblcq uru sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.ny44pedwfd )30 mC. What is the electric field 6.0 cm from the center ofy)dp43 f4nwe d the sphere?