State the law of conservatis3y5jtd/uu3v d,xy p0on of electric charge.

  Is it possible for two negative charges to at4x1wppoy4 a;atract each other?

  Is it possible for a positive and a negative charge to at( gq9ozw 5rbzv)tltywg - p zfk 5f4,h5157uuftract each other?

  A glass rod is rubbed with a piece of silk. During thehuo m:i9gt3t, n 1(fmiaenw)1 process the glass rod acquires a posie auntwfgn31 o,m9 1)h:itm(itive charge and the silk

  A proton carries a

  The model of the atomvcut)o1jz8ae 5 spz*1 shows a

  A neutral atom always h4g8j, vd ;l(gvvbs,qce6kv 5zas

  An atom has more electrons than protons. i) x+c 1:hhxkqThe atom is

  Materials in which the electrons are bound very tightly tnte ,qhp8h*4bo the nuclei are referred tp,h4* hq 8ntbeo as

  Materials in which the electrons are bound ve; zn9t4godp9-m v+c wqry loosely to the nuclei and can move about freely within the mat9-vzmpg 9nq ;o+dwtc4erial are referred to as

  A negatively charged rod is brouhvta8d5wgn vg,z- (;mz s,z k:ght near one end of an uncharged metal bar. The end of the metal bar farthest from the charged tgv,z5d8mz-na (k :,w;hzgvsrod will be charged

  Sphere A carries a net positive charge, and sphere B g+rw*ejgj 9 ,ixz7s2x is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched withs x*xwj +e,7j2grg iz9 a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an el:fhsas z -1h6uectroscope positively?

  An originally neutral electroscope is briefly toyq2g 7d mx j:r+xuij4h0an .a-uched with a positively charged glass rod. The elem4hrg+:j udan2x. -ijq0xa7 yctroscope

  An originally neutral electroscope is grounded briefly while a pos f5q:)na fapa,qe; 0wpy mgwe9 3ep)8uitively charged glass rod is held near it. After the glass rod a)np 09f3wefaaq5 ;8uq,:eemywpp g ) is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. dx-u4sr9u qp kmu(2-x Then a negative object is9xmp4- dkuu(2 qru-xs brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged objectude9y wr zecbm7 ;y1qk9)g)9p 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 final charge )97e bq; ery9uk1wpczm) d g9yon each ball?

  Charge is

  What are the units of the Coulomb cghqce 82:ojvry * h7;monstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charg.fnk+.:h t ;( h8aa: zvylwdxde is larger in maddt(. h:w+kax fh;n:.z8aly vgnitude than the second charge.

  Sphere A carries a net charge and sphere B is neu v uiq;u;*l vf7jxf6p :xjp5 u/aju:t0tral. They are placed near each other on an insulated tv;j/juuq :7pxt6j:*li uf;vx p af0u5able. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a cerbl.r;( i-y2vb htff f/tain force. If the charges on both objects are doubled wb/frb( tfhv-fly2 ;. iith no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive n0o6-kxgx9k z forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutox0-n9g kkzx6ual forces?

  Two charged objects attract each other with a force F. What happens to the fu czoq.b2s e1z6ri3/n orce between them if one charge is doubled, the other charge is tripled, and the separation distance bnzbue i26qrsco .z 3/1etween their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0t rmw/9k,)(k5gn xh*ixu )mfb m. What happens to the mag/5rkxt( g* 9,bw)m mki f)uhnxnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separatedq)dmy 66 elq/1mb: cvc by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if by: e/lcv6cq) 6mq m1da second electron is placed next to the proton?

  An electron and a proton are separated by w3t:5j .xt5e1co af9nu:iiwoa distance of 1.0 m. What happens to the size of thio.joi:e59fw 5: xt un 3ct1wae 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 squa:,9;4 cwt,appgl *p, seucnon re. 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. le4,sp* can,w: ,9c ptno ug;p 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 + md/ i8r lluxq4tng42at 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 thd+mq/2lr4it u gn 8lx4at acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not ,c -p3fsf5 wrp6apm ibam)-fp*e g44wa vector?

  At twice the distance from a point charge, the strrts;8p ll4)/.tamt z7efjwoa/5qv +dength of the electric field

  Is it possible to have a zero electric field value between a negative and civ5fpnx/ob pxw 1buc),,0+- e.twuz positive charge along the line joi )oi,1wxu c/w pb0ftu-p, z+xvbenc.5 ning the two charges?

  Is it possible to have a zero electric field value bs6cxhcu3tm+ z6e*hl 8etween two positive charges alonh*+mth3el6csc86 xuz g the line joining the two charges?

  Electric field lines near psitive point ch5nx:0xujwk , 9nsk r-larges

  The electric field shgjl1wq6nu e 9b 0x7+jhown

  Can electric field lines intersect in frej x9.ps9crlygnx 1zir//7 t2 ys*p8 boe space?

  A solid block of metal in electrostao; . ehoo1jvb-tic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's inter .h;vjb oeo1-oior.

  If a solid metal sphere and a hollow metal sphere of equa)vkcgo;b33q3 y 7ww gll diameters are each given the same charge, the electric field (E) midway between the center and the suc3g7;bgw)l3q v owyk3rface is

  A cubic block of aluminum rests on a wooden table in a region where a unilx pa) ;7to:lh2n;v3 dpo/hmp form electric field is directed straight upward. What can be said/ ;p2;o:pxnl7t)ho da v ml3hp concerning the charge on the block's top surface?

  If a conductor is in electrostatic qohu m8jm c/oo z655a/equilibrium near an electric charge

  A positive point charge is enclosed it wre65cc6qv-6 qonfb.aj m+.2qp)i in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point direc oc25 .p)qvfrntbcqie6+w.mi66 ajq- tly above the hollow sphere has

State three properties of conductors in static equilibriu-,nqmb4g * sc;3lnl ylm.

State Gauss's law.

  The charge carried by one electrot,o;ctf gv-h6n 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 chars fy h4v(xcdpe63p f*02*j notge of +2.00 mC. How many more protons than electrons does this piece of plasti6ysj (t pcpvo42d * xhff0*e3nc have?

  What is the charge od, j1.-n,.y,xa d2gddlwl hdvn 1 kg of protons?

  An atomic nucleus hasyh3,ci+/n 8 hvjr(jup a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated m p x0xjiw ds+ (p/m,qt6(,xwhby 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electricqsi p (0xpd6hm(+ xj/x,mw,wt force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0wq/us5*py8 uz N. What is the magnitude of thw pysqz* 8u5/ue second charge?

  Two 1.0-C charges havy0qtgy*fh1o; 4 cuhsr n draq)i-;*;p e a force between them of 1.0 N. How far apart are they?

  The force between a 0j6fnlu.r9b w$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, expe p2yq4z 7z f rlt2lefv0j./8ierience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between 4rpzl i /8f 27f0lqyt .zeev2jthem?

  Three identical point charges of 2.0 mC are placed on the x-axis. The zzv*u2o/0qj mfirst charg *2qzmvj zu/o0e 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 charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.rej/ib4susg -tv)nm m;ww 9; 00 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 t;br w /ei4g;0tw smjmvu- 9s)nhe origin?

  Three point charges arehl-8 o:a5oo4adohs(sxd g2 s:zng n4s4i2b )o located at the 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 magnitudo: )iohogs 2n a(54glzso4o d24sns8: bhdxa-e of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a 6ap0wzi +cgi9f q6h f,second point charge of -Q is placed at the upper-wp0f 6zq9a i+f ,hcgi6left 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, 0.15 4. 8phx7 3r-3 fme:lc4y);tyeaatppsb qz we0 m); Q3 = 5.0 nC is at (0, 0). What is the ma4a)m; : y5etyp-e7sx bc tzrlwahpfq338pe4 . gnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = - uazx0* -rt+gv1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the ne vat ur0g-x+*zt force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertice*9it(ykqm(k zefzhe0*1 kp f .s of an equilateral trian ((e ek0 phmy*if*fzkk z9t1q.gle which 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 bp8tfxsi 2 72nseparated by 3.0 m. At what point, on a line between the two charges, would it be possible totpnfs8i227 xb 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 charge is at x = 4.0 m.s 27s la6(so/b dof2bd Where on the x-axis can a third charge be placed so the net force on i62s/aso7fd2(os dblb t is zero?

  Charge +2q is placed at the origin and charge -q is pljmrdiqmx k+73/e mh 6,aced at x = 2a. Where can a third positive charge +q be placed so that t m+, 36djqek/hixmm7rhe force on it is zero?

  A copper penny has a mass of 3.us7i(c7b9 j xkktxw .10 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 th rm0xej h3/id*s7v l9d03jgnbe force of gravity by the attraction of a fixed prothesm70g j0 nl3b/x9jdv* dir3on some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common p rrp2g u )kkh 6.1e/vnlip(e;goint by nonconducting threads which are 30 cm.kr pver ghil6/) p1(2gkne ;u long. 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. What is the magnitude of the e;3p+s k.eflrw g*gtt1 lx 1m.zlectric field at a tte. w1f.x*3r +m pskl;l g1zgdistance of 1.0 m from the nucleus?

  What are the magnitude and direction of t 1mg+3+ krkcwwhe electric field at a distance of 1.50 m f1wmgr3 k+wkc+rom a 50.0-nC charge?

  A 5.0-C charge is 10 mj cv h3y),c/oe from a small test charge. What is the magnitude of the electric field at the locy 3evh/, )cjocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is thl qc3*uzg;ssp35 k u9oe direction of the electric fiel;3*o q395sguplkzscu d?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the:hca3g0uulyvp 58h 3d force experienced by a 1.0 nC charge placed at the locatih85a3ugu vpdych 3: 0lon of the test charge?

  Two point charges each have a value of 3.0 C and are separated bjsz zjfobcqj.: 9) g6*y a distance of 4.0 m. What is the electric f s6)9f ocj:zg.jb *qzjield at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark oed+aj n 9eo78ln bv70uf a meter stick and a -4.0 mC charge is placed at the 50 cm maveune77d jao +8l0b9 nrk. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of alikf)p:r fg:b50 e tqvj +tyg86,.tnd meter stick and a -4.0 mC charge is pdf kbl6tp ,j: +rgtntqi:5).8f0e gvylaced 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 m6b99q.bo *o;redaik placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betwee;om6d*qik be.9o 9 barn them?

  Three 3.0 mC charges are at thme/jsf 8+ght k *yb8ds :/f0oue three corners of a square of side 0.50 m. The last g+uso y /d*s8j/0t b8e mf:hfkcorner 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 on a side. Charges16 atke3ewj2t are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC akawete3 2jt61 t (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 acts on a charg:gj /ah(*9hsevn1m.bpm pd8 ab o) 2 y6*irnfce of 5.0 mC when it is placed in a uniform electric field. What is the magnit2smnp g/m*1hfd je nrv6 ipao)b (c a8yhb*:9.ude of this electric field?

  A particle with a charge of 4.0 mC has a hslv ;kd9-;n7re 9qz ,ys vkhm.ob2y: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 6000qi h3:+sfiu,e N/C pointing downward. What charge must be placed on the ball for it to be su+:uihsi ,fq3 espended?

  A foam ball of mass 0.1e5 h 1e2no/lqfy3 b-xq50 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and n5xy2-3 ole/f bq e1qhis suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 nysv qw9 camez:d4. -)cm carries a charge of +2.0 mC. What is the magnitude of the electrwq9yc )dvan:- m4ze.s ic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of t dj-bifif:-) 3.0 mC. What is the electric field 6.0 cm from the center of the spht-i)d-f bfj i:ere?