State the law of conservation of el g97mtp ya3 lfnv-qf08ectric charge.

  Is it possible for two nj6.rnbx ,mr 6os83dt tegative charges to attract each other?

  Is it possible for a positive and a negative charge yk16:hj m1 7ce1.jd ks ajm-rzto attract each other?

  A glass rod is rubbed with a piece of silk. During th.n/ *a5:t ytbr w,j ,wsvos1dsq4ln(a e process the glass rod acquiresb 5,yw:nls*t4d oat.nqw,rv sj/ sa1( a positive charge and the silk

  A proton carries a

  The model of the atom shcfzjlc:+a* zo l:nks(a 41:-vf x)x uhows a

  A neutral atom always s .x1+at xyydb mszib2eu:z01d 2g8) whas

  An atom has more electrons th1g o b km.a y1sd4nf41zbp(ll5an protons. The atom is

  Materials in which the electrons a7 e ku761oc cn-vcj-y/(skq:x 0kl pihre bound very tightly to the nuclei are referrk0 c7yc hpi jnq/euvs61k k(l7o:-x-ced to as

  Materials in which the electrons are bound very loosely to the ne8 p+ jf(eulu59:zkup5 wxht) uclei and can move about freely u)5z9 flkp8w eu5+:exjuhp t(within the material are referred to as

  A negatively charged rod is br .)ov0mft, yrbwszc.5 ought near one end of an uncharged metal bar. The end of the metal bar farthest from the cybc.fro w.zt0sv,5) m harged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are place 1ovn*6bj tq-gljfnb3e 9mfj6 biv8::d near each o8:vj 6qbi j-bv tmfje6* f 3ob9lnn1g:ther on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivel*jt ka f l05by -l6qcz-qx1hu3y?

  An originally neutral electroscopd.lo l)syjb (h a3jn2s+80qtm e is briefly touched with a positively charged glass.h(sojljtd08 a3+)sm 2 by lnq rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively chovic,y)j 7 m*0h1cunharged glass rod is held near it. After17)jncuvo 0h,mhy* ic the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the lpmdyw t1fx4we8 .2mmw* zv0 c)eaves separate. Then a negative object is bro2wzc* 0 8m)e myvmtd.xwf14 wpught near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively chaf (-jij7ik vt.rged 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 rollkij.ji( f -v7ts 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 Cpc35j )s+tbk*nt:tgzq i/ l/l oulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firzfvc(js753du st charge is larger in magnitude fv( ujzd35cs7 than the second charge.

  Sphere A carries a net charge and 0*ddc z5ph8sw7foio1mv3/ wc0fxy 9x sphere B is neutral. They are placed near each other *0 p3cw5c0i/1hdfv zs89yxw xod ofm7on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects att8 9dxe80rfhn 5j ecvo(ract each other with a certain force. If the charges on both0hv8ene(jdo5c8 fr 9x objects are doubled with no change in separation, the force between them

  Two charges are sepai-,kpj je i8 pv:i0i;xrated by a distance d and exert mutual attractive forces of F on each other. If the charges are separat8xiiii0- jpej, p:; vked by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Ww a6 e+q s+vp0l)rs g- :x:+r-kvcpwarhat happens to the force between them if one charge is doubled, the other chargerc ) -0plg +vpkv-a::r+rw 6wq esx+as is tripled, and the separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separat1(i)d1eogrm3/ edgtj4u,o38wx w kbmed by a distance of 1.0 m. What happens to the magnitude of the force on the prot8/o 4rxdwdo w1(j ikm gmb3,)1e3 tgueon if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happen*bm7+am(c*(hkn +o:ff hvjwo s to the magn+ao oc*f7fnmhwh j:mk (*(+bvitude 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 dist qvc 0mbvq(hl,j9b -r8ance of 1.0 m. What happens to the size of the force on the proton if the electron is mq j,cr8v ql-vb m(0bh9oved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a shels ,l1i9 glgj* h.y3kx 3u+kquare. 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 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?*e,xk.k93hs+l3h g1jyli gul

  A point charge of +Q is placed at the cent4b. jgw 56i,um5gpbbw roid 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 third charge of +Q placed at one of the g.i w5w5b, gbpb 4u6jmother vertices?

  Which of the following x r; 2n-jyf,dzq(pd(8q7vtmp is not a vector?

  At twice the distance from a point charge, the stog di0(upo1ohk*(w;; cru lm1 rength of the electric field

  Is it possible to have a zero electric field value between aq vlmlv-zo 4/sk6sb a/.lmfd h;v8+u+ negative and positive charge along the h 6;/lk8/vmus .lq-++badm vo 4fv zslline joining the two charges?

  Is it possible to have )pn fit/x5;m0oec m*6tw u,rga zero electric field value between two positive charges along the lin6totu*;/)0 n m igp5fmxcr,ewe joining the two charges?

  Electric field lines near psitive point:z8(d* h xopeuh ,os*s charges

  The electric field shown,/n 1d e+j*rwobsjzt; 3m 9tg)z*dfpn

  Can electric field lines intersect in free sp4g- l7 9m tod9jcj/uheace?

  A solid block of metal in electrostatic equilibrium is plac3f p9v sah.(mlal64 sved in a uniform electric field. Give a statement concerning the electric field in the bv(s4am s fa9hll 3vp6.lock's interior.

  If a solid metal sphereiw00 wkv gnu0x*d,+p o and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and t0id n0g0+oxkp wvu* ,whe surface is

  A cubic block of aluminum rests on a wooden table in a region whe-s- ozbb44t o8vdphu6re a uniform electric field is directed straight upward. What can be said concerning the charge on the block's t-ub 4op8tho zbsv-d46op surface?

  If a conductor is in electrostatic equilibrium near an electr*yg pr13a fyrlc2/(6tm yitv.ic charge

  A positive point charge is enclosed in a hollow metallic sp1u-jzucnglahd6) )narab y)n+ yg 15*here that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above t 6bda)hnaz)ycgjug+ r-) 5n* 1auy1n lhe hollow sphere has

State three properties of conduy w +fljjc4- 2*uqepcnbt7l)of9i; 6k ctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron isd wl+/s4 zm.2b3kcxyr $e = -1.6 \times 10^{-19} \; C$. 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 protonsz 3v3*l+dcaybhcg ru :39jbe: than electrons does thisj z c3r9 yu3b:ge3vb:c*l+hda piece of plastic have?

  What is the charge on 1 kg of proton,h)(2xyfpxuw0z* fsjk6f x3a s?

  An atomic nucleus has a charge l,7ps-nr spt0 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, havediu)fqbbv4v(765 -bw n x:brp beu8 4h charge values of 2.0 and -4.0 mC, respectivelyiewxb vrvn (:upbf7u h-54q4b86b )b d. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second ch5pwszyp5/;. (bi 5k db cve2kyarge, and the force between them is 1.0 N. What is5ke255(v;p/yb.cybk iwp dzs the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apb:+qckba9h 1d uee/.go1o:wsart are they?

  The force between a hi5d.s/f:zue)f b r)w mv 1;gf$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exvq 5 m vj;xiog x,z,yr1re);a6he68daperience a 1.0-N force. If they are moved to a new separationi5g1eryox ; a,x)m 6hzq,de j;vv6ar8 of 8.0 cm, what is the electric force between them?

  Three identical point chl /ocf 8e+/vycarges of 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 the chcf o /y8vc+/learge at the origin?

  Three point charges are placed on themkt nmxu(1taek74j4+ x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C +ujma4etkn1m (4k 7t xto 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 the origin?

  Three point charges are located at the fqu p1984wl wx hmpc69following positions: Q1 = 2.00 mC at x = 1.00 m;q4ww fp m99cpl8x6h1u 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 a square, and a second poibyzno8+d m zx5m0.8 fgt0ezc :nt 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 acts on .fge+zb:0z0cd8 z ytmx8mo5 n 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 mt-*re m ;kf q c6m)iq:5z gj2crpl20gz6rjx,c); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charg*q rxef c;z 5t)6i6rkl, m-gq20zjgm:c pc2jr e?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 3i.fzcf.zqff1o - kb8u88dixnC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force oq38dz .1 u. 8 icff8zi-ofkfbxn the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at thfbzxoh(v + j+:e vertices of an equilateral triangle whichh++j fv:zb( xo 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 and +4Q, which are separated by 3.0 m. tq36p+k3feoe -(+e r wdf2c fcAt what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it woul ep3crt+f6 cokd2ew (f3-f+e qd be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Where krtv5i, c7m8ynp s,,(2u: w8eb+eqry+ qvqe ion the x-axis can a third charge be placed so the neyiv2i(w e8pet:k, nmq+vy, +rb 7r5ecqq,s 8u t force on it is zero?

  Charge +2q is placed at the9t peen9blx2tf* + 5rf7h/v uh origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed l/r * htf59tnfp2ehvbu 7x9e+so that the force on it is zero?

  A copper penny has a mass of 3ix j0y(oymtnxer8k8sy,1- t3 .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 by the attraction of awm-h wgb+62qh i)5m vd fixed proton some distan bm w)h2g vh-w5dq+6mice above it. How far above the electron is the proton?

  Two 0.20-g metal sph 1dixdeb) k.0 wz v9jl3y7uxc0eres are 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 between the thread 7jcx)eu 10db d w0.xvzyikl93s is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is thfy;gm(fjy)1 9 k5u wzme magnitude of the electric field ym )ukgf(z;wmj95y 1f at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distan9n wupfr9t f70ce of 1.50 m from a 50.0-nCn9w0 7pfu 9ftr charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitqmvj*g dn4 1q,ude of the electric field at the locatigj*,4m1q vq dnon of the test charge?

  A 5.0-C charge is 10 m fro1cfr(gj:nydmi 6y p rv -gx0-,)c(7dr.uqp fhm a small test charge. What is the direction of the electric -ng7y (: mhg- x c qufjf(0r v)d1.,6pcrdirpyfield?

  A 5.0-C charge is 10 m from a small test chkjx0fc 3pdp0 jw:.e 0karge. What is the magnitude of the force experienced by a 1.0 nC charge ejcd f px:k000j. kp3wplaced at the location of the test charge?

  Two point charges each have a value of 3.0 C and arg;c8bj-q43-x /yxk admzlp.:+wvvt le separated by a distance of 4.0 m. What is the electric field at a point midway between the twoc;- xvldqv+ : jt .kwzy83bm 4pxgl/-a charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stickev/y+x8ls eb6wwq)pz4m .g4m and a -4.0 mC charge pl4zywem emb /6+ 84qsw)g.xv is placed 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 afcy+ ir63s 6cdnd a -4.0 mC charge is placed at the 50 cm mark. At sc 6yf+ird36c 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 at x = 0 and cl 0aa:4rp d4ppv,gw .x = 0.20 m. What is the magnitude of the electric field at g, pad.lvw4 arp0:4pc the point midway between them?

  Three 3.0 mC charges are at the th+zy uouo)0ga9a up3l,ree corners of a square of side 0.50 m. The last corn0,lazupuu3 9 o y)o+gaer 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 sd4 q:s3 vdn4son 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 mCd3 d 4vnqss4s: 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 is placed in a unigk;33 ( l8j lciw+i: dtygg:xkform electric field. W:ly3jw :i 8xtkc+ggdg k(i3l;hat is the magnitude of this electric field?

  A particle with a charge of 4.0 6nsjj 5 u.okruf41f)7zysh2 fmC 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 +c, s 61bq;qppum8ntn 37 e*o-aqkmr hcdj5d-pointing downwardtkn6;+pa 5 dhqpr,qeju d1cs-ob 8mn 7q 3-c*m. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chargegm45u zj(8,-dq : lcng/hbbs y 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 the electric field gs/ylzb (-mc5,gj4duq:h n8b ?

  A metal sphere of radisnc 4 b;/rw5y)zef1r ius 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's/5b)z1sw ;r c inf4yre surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the eleckc ay.;m9n sfo*3 adpm(irxjp ,;hx(8 tric field ,aof8i ;rhx ((ax 3ysn9m.;*jcm kppd6.0 cm from the center of the sphere?