State the law of conservation of electr /b)er bi:mzy*e7fji)ic charge.

  Is it possible for two negative chrq ,5vnu/a,q warges to attract each other?

  Is it possible for a positive and a negative charge to attrai*/jl k5aern/6 rq js1ct each other?

  A glass rod is rubbed with a piece of silk. During the process th7hu s ) a,22 mpdvumhpsr6tt4yl :q4*ge glass rod acquires a positive charge qtgp:h2pmharu,s 4y*m64s7)2u tvd l and the silk

  A proton carries a

  The model of the atom showb 2db0+fks- hbs a

  A neutral atom always hasve:ir2miw6 -s g2,cd r

  An atom has more electrons than pb;jgchlf4 d1, rotons. The atom is

  Materials in which the electrons are bound very tightly to the n.xdeota 5pl1b (do,te-bv 5 .cuclei are referred to asee5,atdp b1(.otl-.o5 xvc bd

  Materials in which the ;hh8m) tkbc;s electrons are bound very loosely to the nuclei and can move about freelshmb;kct)h ;8 y within the material are referred to as

  A negatively charged rod is brought near one end of an unchargesrad 995rm 8s bc2:e oqe(1it /ud,dtkd metal bar. The end of the meta 2o8cds/: ris5dm9kbtq1(td ,e a9erul bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B i7+c8qd : f,vzy2 q.0;cykodut7fw ta us neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. t cufd;,: wa+7u tv7ky.qc8f02qyzodWhich statement is correct?

  How can a negatively corz *.. jpe-lz)jqzo(harged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively char n.zc lon /2,*g* asv0jf*exfmged glass l g*2j/vn, xezf*mnas*f. 0co rod. The electroscope

  An originally neutral electroscope is grounded bri fyhk a;42j6q 4t ihjik ozps;4ok)vi*;e0g,o efly while a positively charged glass rod is held near it. After the glass rod is removed, ts yi4q;pfkizhj*toi; j4oe ; k4,kg0 62)ovhahe electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Theej4s5 (kv7u bxn4esxk5vu j(b7 a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is plw:l+ub.b *jmc3 vuc9 eaced on an insulated table. A neutral metalli3cu.*eb9vlu w:m+j bcc 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 final charge on each ball?

  Charge is

  What are the units of the Cou9g f) lq;wgp:cc ,3wqrlomb constant $k$, which appears in Coulomb's law?

  Two charged objects arecstc h1, vc80f j,.ksy separated by a distance d. The first charge is larger in magnitude than the second ck vcsy fct h,j01c8s.,harge.

  Sphere A carries a net charge and sphere B is neutrt g+fgfu9568vrux(k nprr1rx b1-o4tal. They are placed near each other on an insulated table. Whichxtu(6f5+kg rofrn8bvt4 1r-9 gxru1p statement best describes the electrostatic force between them?

  Two charged objects aw+qt 0gy ywumz/g6d /oa*q)mc6pu9 7dttract each other with a certain force. If the charges on both objects are doubled with no change in separation, the force between themyu0ydg+/ qp6m6oc )w */quwtmadzg7 9

  Two charges are separatej r+hjs /k.o x4*hdbb1d by a distance d and exert mutual attractive forces of F on each other. If the charges are separated b*oj.b sj+rxb h41dh/ ky a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to thklmn; *- urb-be force between them if one charge is doubled, the other charge is tripled, and thubk;* lm--b rne 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 separail *t1 f.hyedowb: bp36j2 ev0ted by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electr023dbhv jwip1e*:e6lo fbty.on is placed next to the first electron?

  An electron and a proton are separated by a distanctf8kpz h)b2fv gl5w19e of 1.0 m. What happens to the magnitude of the force on the first electron if9f 5vz2fghb) twkp l18 a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens tobgw)g j-wtyac*c/*x; the size og tg;cbwx */c-w)ajy* f the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second point9 wu ,yw4ldao( 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'sy4wd9aw u,ol( 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 equiyp w a+ hck6bpb8;5dh.lateral 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 other vc56pdbh;hak y8b.p +wertices?

  Which of the following7x(m vpwh/d8y ro3:mi t. t;sy is not a vector?

  At twice the distance from a point charge, the strenlojl q4g(9dcx erfx2gdi:8i1 9ieo8) :f9ouegth of the electric field

  Is it possible to have a zero electric field value be1le oj .d ;e09g(, 0zzuxbtfw*iz(hictween a negative and positive charge along the line joining the two ci0izbch1(d e(g xl;z.o f9uew0t , *zjharges?

  Is it possible to have a zero electric field valueu d /bwf(5rvy :194)ftlz(iawe8benj between two positive charges along the line joining the two charf dw((8vfn45:9yb)/ albt iu1 ezewj rges?

  Electric field lines near psitive o(s c 8vlos,l:gmf* p7point charges

  The electric field s h.q1i(1 odkwnhown

  Can electric field lines i z,w:3/)cewb tw3e+ bzhy9szt ntersect in free space?

  A solid block of metal in elect v9h)qp epg3y ieq,s,t)qjr))42bh cfrostatic equilibrium is placed in a uniform electric field. Give a statement concet)p4ry32qj ,he bisq eph c g))v)q,9frning the electric field in the block's interior.

  If a solid metal sphere and ees/ d7g0w)vga hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and t7/esw)0evgd g he surface is

  A cubic block of aluminum re+sz*k7s8 ti mypr3/yy *.ze1yd5hlxerxoa2 9sts on a wooden table in a region where a uniform electric field is directed straight upward. What .mhszdyl92rxpx* y t1r ki5ya7+z ye*e/s3o8 can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibso:udhi4s)bh6sq 7 fe 7a:+w2g bfte)rium near an electric charge

  A positive point chaos+r m9 d6yxj,rge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sps+yrxdmj9, o 6here has

State three properties of conductors in iun4 y l ;xew*c-7(oevstatic equilibrium.

State Gauss's law.

  The charge carried by one e39h+ opfqk6-y gq8ffj lectron 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 more protons than ele b 1o34jcgz ofhih tz(,x7*v8sx6jf +ectrxf ot3ez 4z6cv*x i+gho 8 sh7fj1,bj(ons does this piece of plastic have?

  What is the charge on 1 kg of protons ,;85k:qy 7i*f3xx lcggxzcmqcl/ 7xf?

  An atomic nucleus has a charg8thz*cte(: a-z-doo ne 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 o*qs i-kk y,l;kf 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force ky;iq*skk- l, between them?

  A 1.0-C charge is 15 m from a second charge, and the force between th/fb;9ch / cylhem is 1.0 N. Wh/chb;f 9yc/lh at is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?weip 74q6fs v,

  The force between a c og2g,1 tcw8l yv1h5 mfb31tw$30 \; mC$ 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 forc6j6 p bfv 2v8m5jej gjhex;i+d.zk5;ce. If they are moved to a new separation of j8vb5e j m6 j dcvp;+xhezjfi5kg2 ;.68.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis.rcha)s8 v wy8z1sciv*jxbs * 2i4bt6- 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 electrostatht-s)yv cbwz8 6r4i**v8 sabisjc 12 xic force which acts on the charge at the origin?

  Three point charges are plaslh7 p* +fq/.zh wve8fced on the x-axis. 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 onf/8v p q*wle .7zhs+fh the charge at the origin?

  Three point charges are located at tt,l8b2h*yc1kb2 d tgkhe following positions: 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 dtk 8g2 *1bkbylth,2c of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the centeuy(f m61e s)l4i7 gwp0ye5snl r of a square, and a second point charge of -Q is plac76s uipys0fg1e wn4lme( y)l5 ed 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 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 aw)ue4vs71 h.9w hpumm); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on ts e)ww9 v7upah4h u.1mhe 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, pz:-ut us8*x 0ctd7 vvo c;7i*lvo wy:0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directio;u8p7s0 y*xvo7tv: d wcozcul* i- t:vn of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an eqsnw pn96q0s0ky(:eg azc3,f4x 1 gwcduilateral triangle which measures 30 cm on a side. What is the magnitudzgcswk n0g3dq w:9 6s1a (ycep04nxf,e 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 )z3f kqt+/c (gpdnvxp(:; eljm. At what point, on a line between the two charges, would it be p3lv t;(gn (qxppcfk: d/jez+)ossible 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 and a +9.0-C c+ zbfvmlxm 6/s)xcp: 1harge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it mzb p+xx1)6/l sv f:mcis zero?

  Charge +2q is placed at the origin and chargef/* 2sjefm+ga pf (5om -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on ojef/(a*f+2msmg5 pf it is zero?

  A copper penny has a mass of 3.0 g. A total9 tt;7csrhoxs.f q)e 5 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 attract9ao6 j3 u9xjkax:0mi:r zmv75 e,oefi ion of a fixed proton some distance above i9j: 9u,emer0ok76m5xz ijva xio3 fa: t. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a co+n vy0tfnci aa00x88k 3f6wwhmmon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the anglexk6ic0awn88n0a 3+ ftvy 0fwh 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 t yqa +i kev5nwkah29)-j) 3yyxhe electric field at a di2wj +q39vh)-xy nyaki)a 5ykestance of 1.0 m from the nucleus?

  What are the magnitude and direction of thme c66wtlz 8z wa8z+;ze electric field at a distance of 1.50 m from a 50.0-nC charge? 6 ezwalmz c886z;zt+w

  A 5.0-C charge is 10 m from a smfsql5d,t 8mubhgy- md 76g d;6all test charge. What is the magnitude of the electric field at the 8g-mdh;,mfl6 tgb uds67qd5y location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. ,iqq vbnwtym;3:0*xq What is the direction of the electric 3 w,iq0;mtq*vxq:b ynfield?

  A 5.0-C charge is 10 m from a small test chargujwrsw:),gjim:* x: ce. What is the magnitude of the for::*,uswwi j jrxc:gm )ce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges ea:. nqyt;xwnogw2qxy;6elb0 l + )y6sech have a value 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 2 .nw; e+;y6lygox6s)qwq eyl:xb tn 0charges?

  A 5.0-mC charge is placed at1i, 9vqv n fee:y,x+hm the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is th,:m9i 1qveh+fxn, vy ee 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 -m4p xq9c wgy)l3bhv)4xvj 7m/4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the elec9 hp4bgw)7v/4cmm )xjv yq3lx tric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed a;za n sv h0 x,3vxrp6my2spv/ 46ir(okt x = 0 and x = 0.20 m. What is the magnitude of the electric field ats,mrv0pv; xp z(kxr24iah66 v yon3/s the point midway between them?

  Three 3.0 mC charges are at t 33w*h1 a yku1lsuon8qvb nn;8he three corners of a square of side 0.50 m. The last corner is oc33b ; *ankn 8vq1y1hon8wsl uucupied by a -3.0 mC charge. 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 *fxwkhhw,2 tx xf 7;a0the 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 cente xf2h w;x 0*7x,fhatkwr?

  A force of 10 N acts on a charge of 5.0 mC whe1 +:pmanj5h fyn it is placed in a uniform electric field. What is the magnitude of this electric fieh+:1 nf5yj pmald?

  A particle with a charge of 4.0 mC has a mass o9e d/(,zrut5owu(pt rf $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 3h945ybgwzx h0.120 g is placed in an electric field of 6000 N/C pointing downward. What chabwz34ghhyx5 9 rge must be placed on 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 y g2tfrf3 ke2ih8zq7o:9 dw, qplaced inside a uniform electric field,tydoz9e 22q 3,ikrgq: 7hf8wf and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10y.yaw ltn;o1 wb/8a: l cm carries a charge of +2.0 mC. What is the magnitude of the electya otwnb/:8 l ;y1wla.ric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whaln5u/7 7lwzp wt is the electric field 6.0 nl lp75uzw7/wcm from the center of the sphere?