State the law of conservation of elecpsbs*q.w8(9 dkfrz) d) p,jq gtric charge.

  Is it possible for two negat9zv /v;v0 ynuuv/h:m*5ls luuive charges to attract each other?

  Is it possible for a positive and a negative charge to attract eac8* xduc i4yhfpig .:zt hm*f,)h other?

  A glass rod is rubbed with a pie0tr8ob wy ,un5ce of silk. During the process the glass rod acquires a positive charge and the b50onyr w8 u,tsilk

  A proton carries a

  The model of the atom shjqafs m8 u(f.2ows a

  A neutral atom always ha9ey winmjjpjj80(p 3pi+/+ftx1b z7n s

  An atom has more electrons thau(8rheo y7co em55b. rn protons. The atom is

  Materials in which tl:3xpga (+l lihe electrons are bound very tightly to the nuclei are referred to as+l ail(xpl3 :g

  Materials in which the electrons are bound very loosely to the nuclei and can mad9;hpa eib+uzv.m pz h02)9e ove about freely within the material ar vzpe 9hepi9ha.duzm)a0;+2 be referred to as

  A negatively charged rod is brought near one end of an uncharged metajl i0p*rd4nk;l bar. The end of the metal b4p 0rnl;*k ijdar farthest from the charged rod will be charged

  Sphere A carries a net positive chard7w/he(+x)kouulf2 l ge, and sphere B is neutral. They are placed near each other on an insulated table. )fhkuw 7od /xll2eu +( Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod ch/ v1z:a; th5 wo)fdzqxarge an electroscope positively?

  An originally neutral electroscope is brie+ey:v z1rp (sofly touched with a positively charged glass rod. The electro:svrze( p +1yoscope

  An originally neutral electrosch p4ki: 3mthf-ope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, tmp4 -hi3f:t khhe electroscope

  A positive object touches a neutral electroscope0;.6jpvc u5gf2p mpkp, and the leaves separate. Then a negative object is brought near the electroscopcgp. 0 p pmp;uk26vjf5e, but does not touch it. What happens to the leaves?

  A large negatively charge4*mq 52xu 3e ueitmk2bd object is placed 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 no time does either ball touch the negative object. What is the fmqe 3xbt2u m5 ie*4u2kinal charge on each ball?

  Charge is

  What are the units of the Coulomb co mb8xwlhmm+ 5(b)n- s;q ynhz8nstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first ch;)xm w:hh/):vfz s n yemxv;)farge is larger in magnitude than the second ) f nvmhe;;:mzhx:xwy )f)vs/charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near e ;nbxos19 ,9xu q-wen(yqsmd 3flls,w) vk37tach other on an insulqw9 1f;xkdxsv (yl9ob e -7 ns q,m3s3n,)twulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charge-5n7pm ef8if rs on both objects are doubled with no change in se8f nprif -m5e7paration, the force between them

  Two charges are separated by a distance d and exe- n .),i gvygaz t9rtl+wobq59rt mutual attractive forces of F on each other. If the charges are separated-9.b9 tgg q+ y,azilv5n)owtr by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other witl1xh1b-) ewf , qzar0(vk*asrv)zcd8h 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 equal a,fba)rkl)(*1eswr1 qzx 0z- d8 vvchto

  An electron and a proton are separated ,vljftx1p2xb j.6xhamh*4z2 by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first ftxphjmx4b *v,2j6l1hx.z a2 electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens to4m6j.-)5 -befhlciryf( fnhi the magnitude of the force on the first electron if a second electron is placed next to the proton6f5)(cri hf m - jhn4lf-eby.i?

  An electron and a proton are separated by a distance of 1.0 m. What happens t*xu+bpyatkzq23a1 lwh37yo/ ch.fb: o the size of the force on the proton if the electron is moved 0.50 m closer to qkhblc*fyaw.3xb 3/+1ht2 p7zy : uaothe proton?

  A point charge of +Q is placed at the center of r+7akxlna t- ql)tpyd1ke)/2 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 actsy1k2l- r)te+ax lt)7p ank d/q 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 placedpb+pq1rze6 x tkp(5x2 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. What is the magnitude of the force that acts on the center chat(kpxbe1qp6xz r25+ prge due to a third charge of +Q placed at one of the other vertices?

  Which of the following isqder .+*kn s,r not a vector?

  At twice the distance fc(qz x 0a(efd8rom a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative fb3r /jyodu659kwz ; qand positive charge wzoqurb5fd3j96k / ;y along the line joining the two charges?

  Is it possible to have a zero electric field value between two positive char6desrs* ,rd +kges along the li6r+sdes,r*kd ne joining the two charges?

  Electric field lines near psitive point cha h d,llydq1bgbptkup j8-(( /9-u ky3jrges

  The electric field shoo syhe)vkzwrsn:b *d8 01i)kl; fnf3 ;wn

  Can electric field lines intersect in free spavu8l4s kg3yhz*/i/d xce?

  A solid block of metal in electrostatic equilibrium is placem2i g)zkeoke/y g6 +4-yrdy)wd in a uniform electric field. Give a statement concerning the electric field in the block's inty)ki/2 z g6e w-k4)yym+dogererior.

  If a solid metal sphere and a hollow metal sphere of eq:de +q/ kt1uqtual diameters are each given the same char/ett q:+1uqkdge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum restta+ y .sm (tb5k97wbk3bz9xcds on a wooden table in a region where a uniform electric field is directc59t.+b 9mwx(ksk7b ztb 3dy aed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equil gru/e4fdpt:/ns84jr+ 2nwl yibrium near an electric charge

  A positive point charge is e/l g;mfly5yvb0ba g )+nclosed in a hollow metallic sphere that is grounded. As compared to the case withom byb0lg+v; )/5fygalut the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conda(b6, opd6lpd uctors in static equilibrium.

State Gauss's law.

  The charge carried by one,m , y)5fb45q a.vy aiul8sq dcbz85dz 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 cdl)k f.rec chc(cq(;6harge of +2.00 mC. How many more protons than electrons does this piece ofch6)e( ;k.d(clc crfq plastic have?

  What is the charge on 1 kg of pro9w a.+j kcnrjk6 mcim2gzn0,*tons?

  An atomic nucleus has.v )1 h5gtfqru0locz0 a charge 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, hav7 gajc)*y3i3a/psyj pic w(w/e charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the esiya3 *jgi/wa3cpy ) 7/c (jwplectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between 5 p8xi:2neamf) bjop *rz(p/dthem is 1.0 N. What is the magnitude of the secbxj 5nrd2ippp/z :(fao e*m8)ond charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are tvk-m*u4qirg .hey?

  The force between a y 1*;x- n*nfe5yp7 ko2zo drrz$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N f 0kij+ 3cmy+e0hef*zg orce. If they are moved to a new separation of 8.0 cm, what is the electkf c+ ieje0 yg03h*zm+ric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The .qj ) iiyb6m+ me*0epyfirst 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 forcym)pe*iyi+ j0.b 6mq ee which acts on the charge at the origin?

  Three point charges are placed on the x-axtk4jn.a10q7oxc x0m ais. 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 the charge at .m4o1 kt7qaxajx0cn0the origin?

  Three point charges are located at the following p94-bofak -a hcjq7;kwjh: e9mositions: 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 magnitude of the force cjka7- ;- 4hjqkwe9oahf b m:9on the 3.00-mC charge?

  A point charge of +Q is placed at thjeao8/ t*; wi ;zxsrw1e center of a 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 positive charge at the center. What is the magnitude of the force that t8 ojei*x/; rw;wsza1 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 (0, 0.10 m); Q3 = 5.0 nC is atiytf/ ;n1b(7w 8oag ox (0, 0). Whaot /(fy ;i7 ongx8bw1at is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);1i umzhb /61zw 9qzr/.1gos(lqz z 5ws Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of z/u z/ i z(qm1bs.wz6sr w1lgzh95 oq1the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral fbxb0-eiw o+1pz9y92 nwv8 nc triangle which measures 30 fo +w8pw 1evn2nbz9 - byi0xc9cm on a side. What is the magnitude 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 m. At ze xic/)+m; qjwhat point, on a line between the two charges, would it be possible to place a charge of -Q such that xmizc);q+j/ ethe 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 = 4.0 m. Wherlr em mz5h)(*de on the x-axis can a third charge be placed so )m5 rzmh* ed(lthe net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a.,ycatr5 o g*.w Where can a third positive charge +q be placed so tg oay,t.r* 5cwhat the force on it is zero?

  A copper penny has a mass of gbw9 i6pm974iyrk gz ;3.0 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 byhbnw9bi1hl vs*guqs- 0k/ -v : the attraction of a fixed proton some distance above it. How far above the electron is the prot*hgvbu:v h /09sb-nlk 1wis -qon?

  Two 0.20-g metal spheres are hung from a common point by noncond9bl.o/fek/ rl)b n )ayucting threads which are 30 cm long.bf)le/ bn9ya )o. r/lk 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. Wh,e7yq mf4af cse/q5w1at is the magnitude of the electric field at a distance of 1.0 m from the nuc f/wsfce45eqaqy ,7 m1leus?

  What are the magnitude and dir+qn(*hc zay8v ection of the electric field at a distance of 1.50 m from a 50y+( qh*an8 czv.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Whupu,spx5 ;ry9 at is the magnitude of the electric field at the location of t59pspx;yu ,u rhe test charge?

  A 5.0-C charge is 10 m - xsvxr6b mo 0b 0xy3tedvxu.lmw;,(9from a small test charge. What is the direction of the electyv w(0 t;umsmbx -ovb6x.0x9d x,ler3ric field?

  A 5.0-C charge is 10yh8n uzv; a7l/)nll. t m from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placedltyvalh)/zu 8 7n;ln. at the location of the test charge?

  Two point charges each have a vale 9yt-q8ahfdhos7 .a 7j:lmqw;u5 ti- ue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chargeyl -i7jmt5w;sq:a7t89d .a oeufhq -hs?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a - ,l(x02mj jxhno7z0r t4.0 mC charge is placed at the 50 cm mark. What is the electric field at tj rlhx m0o tzn720(,xjhe 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.iv)v9 q qxwuhob-h ) )ho*c*o-0 mC charge is placed at the 50 cm mark. At what point on a linv*xhh-v* c iuq9whoq)b-oo )) e joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.201kzjsd28je w m24lui. m. What is the magnitude of the electr zj8l.j124dumek siw2ic field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.5( rg:,zfjvdy c m0 k,)(4tyc.czogag, 0 m. The last corner is occupied by a -3.0 mC charge. Find the electric field ag,:rmgjcdg kv fy(zz,t(.o40 c c),ay t the center of the square.

  Consider a square which is 1.0 m on a side. Charges are pw,-vq,tdge2pjgf(s ( laced at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 vewtg2-f(( s jpdg,,qmC 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 center?

  A force of 10 N acts5mupitcc;w8 m5b/ ve4 zhiz(7 on a charge of 5.0 mC when it is placed in a uniform electric field. What uv i 75tw5/(emcpb8z4 mzh;ic is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a nig fl)s/bi+6mass 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 plaibxi j,s4 8 m z.ha8t*kir1ad5ced in an electric field of 6000 N/C pointing downward. What .m1i8h*z, da j5ibir 8xtask4charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2s py/b2ru sgrpou/; :;yy5c(l.00 nC. The ball is placed inssryy2l5 upgou/; sc:p(r/ ;byide a uniform electric field, and 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 ajdsbwoxs t o fe7 n*p7e8.;- di7*zp8d charge of +2.0 mC. What is the magnitude of the electric fiel7 dz;w-sp .b*fdoe 7p8*i7sxe8tj nodd 5.0 cm from the sphere's surface?

  A metal sphere of radius6::ud(oe - r d;rt ntss6di2qjz92io o 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from d6:z noe62 :isd 92jttsoi-d;qrrou( the center of the sphere?