State the law of conservation of electric n7 eg sx-9euvi.lps75 charge.

  Is it possible for two negative charges to attract eihu0gsj 6ovx2 0 qge/; wkzr n2-z.2hiach other?

  Is it possible for a positive and a negative ch7v3+l8tkp r*l *u ** )s5jmxlknozn pxarge to attract each other?

  A glass rod is rubbed with a piece of silk qo y3flwr9ew 2*,zc6n -utjh5. During the process the glass rod acquires unhcwtj6l 9q,e* yof 52z3rw-a positive charge and the silk

  A proton carries a

  The model of the atomllyxad 4/a8;8 *o73xy e1 wwrsfwcyl+ shows a

  A neutral atom always qxq8blhp9jkxr o7 y+-6 / tsbzv5b/5fhas

  An atom has more electrons than protons. The atom iset.ov:g u )fo0

  Materials in which the electribwc7: ijw5 y l.og2; gf8ak2pons are bound very tightly to the nuclei are referred tfbwia2g pg82l;oc k y.j7wi 5:o as

  Materials in which the electrons are bo*5gu /b8al +zznp)moc ci1p,m und very loosely to the nuclei and can move about freely within the material are referred tocz1zmgbai,o /u c*5pnl 8) +pm as

  A negatively charged rod is brought n2bes+ qm8 us(year one end of an uncharged metal bar. The end of the metal 8sumsyq + 2be(bar farthest from the charged rod will be charged

  Sphere A carries a net positiveoa( qq.v1dh,b6:vvv ps +.7z kpykdc7 charge, and sphere B is neutral. They are placed near each other on anbv(:haz.p,yk76vdd sqvk17 o +pvq c. insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively i3m mq-m(: asdcharged rod charge an electroscope positively?

  An originally neutral electroscope is bggpa2;)0;qknm 3xtkm riefly touched with a positively charged glass rod. The electr3mg0t ax2 ng)pkk;m ;qoscope

  An originally neutral electroscope is grounded briefly whiifd8orgjpx /;;ik +u 2le a positively charged glass rod is held near it. After the glass rod is removed, the elej/igo2 rpx k8u ;i;+dfctroscope

  A positive object touches a neutral electroscope, andl pkz5w0oc8 yie ;c-5h the leaves separate. Then a negatik-o zw5 8c0ecpyl h5i;ve object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insuv+;+42 / eooei t bak4:dtd fpyye5og5lated table. A neutral metallic ball rolls straight toward the objte4/5o2keado;ig5d :p t 4++vbyf yo eect, 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 Coq4-jf3 *dwol7fnk *k wgn 0w-tulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is fcanv; ,,i8/9y+ n,rk j7i1aereac dglarger in magnitude than the second cr,yk ,ande9 /icvr+ecfi7ja1 ;g a ,8nharge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near eaczimg/-*f pm v5h other on an insulated table. Which statement best describes the electrostatic force between /m f*zp gvm-5ithem?

  Two charged objects attract each other with a certain force. Iwq,(( .irmezs u6t v15unq av1twfr. 0.4v qgwf the charges on both objects are double(u05wnuri1 4eaf1v.qmwvg(wvr.q sq 6tt , z.d with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive mklg9, y/i+yzzfy/iut nx )8 iv6+im 4forces of F on each other. If the charges are separated by a distance of d/3, what are the new mut +z6 /m8ii +zk4niyg9 ,mf/l)iyxyuv tual forces?

  Two charged objects attract each other with a force F. What happens to the c l8bnn mt9e pe/:m2nyj la(,1force between them if one charge is doubled, the other charge is tripled, and then emtnl mep18/, yc9al2(n:jb 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 separated by ziva f exk c(r2/io+p* tn-q7,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 qvp7o*exitnk c r+ ia /f,2z(-electron?

  An electron and a proton are separated by a distanurh x0 qwjhc )zw0ya8 +6(7k .o.yvzjei *1zaqce of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is pla.kzjq0(w0 h y*zq)ohj7z ri 1y.86eu vwca+axced next to the proton?

  An electron and a proton are separated by a distance of 1.iey* kn2)q kjb012fb(k i vg1a0 m. What happens to the size of the force on the proton if the electi10ky2qn bjgke v1fb)* ( 2iakron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the arn ( 3d v5qb1fa5;xow5u) htmcenter of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an eleb u5 1dfwmnq(x3 o;hat vr5a)5ctrostatic 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 equilateral triangle. Whefqd)f acd;)iej 2n /l7n a second charge of +Q is placed at c7)djan /lif;fq2d )eone 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 ipk 9)s v*od eivloz)k80+fhx8 s not a vector?

  At twice the distance from a point charge, br ul+wk(/ 4bgthe strength of the electric field

  Is it possible to have a zero electric field valur2zn7zpcs p5.x7hk i- e between a negative and positive charge alpk7p.c x r-sn7i h2zz5ong the line joining the two charges?

  Is it possible to have a zel;j(q n 3ey- rb6vc3mveysf98ro electric field value between two positive charges along 9qfly- r3m 3jy6vs;cv8 (benethe line joining the two charges?

  Electric field lines near psitivc9a4h m ,lfhks+icu wp60u1t.e point charges

  The electric field shown j/.xv 23 k:kzupwz brkpp:3.w

  Can electric field lines intersect in free spa kuh8eo,0hcu;xk,bfa ;.u +rlce?

  A solid block of metal in 6et k7izl1*jg electrostatic equilibrium is placed in a uniform electric field. Give a stat ikz*t17jeg6l ement concerning the electric field in the block's interior.

  If a solid metal sphere and a/wx (q r+zn3d fhl2 b)r4n lec.mtzu,0 hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the centern, (ze h 23+w t)d/lb.rl0m4c nuqfzxr and the surface is

  A cubic block of aluminum rests on a wooden tabl*5c1.cdewp : j **dobrig;pxge in a region where a uniform electric field is directed straight upwar*bp oc*5:dg ix.c1repdgj ;* wd. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrokrq1nlb. mxxp0 oyp8z 8 qnu+w)x 79.astatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere th4xz 8a zux.t-jat is grounded. As compared to the case without the hollow sphu-.zjzx 84txaere, the electric field at a point directly above the hollow sphere has

State three propertiesk5c a*utzkyykls/hyd5b)k.mcq r15n42 :nk- of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron ,xb3 5+ i fx+aw2x3 ,dppdmsw8dz7mtdis $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2+dkke37r)r m n.00 mC. How many more protons than electrons does this piece of plasti37ke)mr nr+dkc have?

  What is the charge on 1 kg of-ak66m0xd ,tx* z(y 7bwzjfq a protons?

  An atomic nucleus has xbh rh0w33i1ba 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, have charge values of 2.0 y4tvtxj4ah 4pl64r:band -4.0 mC, respectively. What is the magnitude of the electric force betweenphvt 4:6tbj xyr4al44 them?

  A 1.0-C charge is 15 m from a second charge, w+)v(dsyfwa+ and the force between them is 1.0 N. What is the+w+ wd()fvysa magnitude of the second charge?

  Two 1.0-C charges have a force between luf7(j; hdldkyc0c;l hr :l0+them of 1.0 N. How far apart are they?

  The force between a /5yg-u : cnoxxg6qxivv(, eu 7so)v4dm( ,awn$30 \; mC$ 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 force. aep s22s1xh*x If they are moved to a new separatio asx2e2spxh*1 n of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are (h ;5tlildtu jrr6gv.vz0u 35placed 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 th vrlir5l3 td6j0tg;hvuu.5 z( e charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2s rpu/a625fn g.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 t2 nrgpf6/au5she origin?

  Three point charges are located at the following pxe :xm)l) hlm)ositions: 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 mxl )l)em h)mx:agnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the cerkkuu, ae0zy.c9gudthbk0g2 e1 (* r4nter 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 acts on the center charge y 9*urrka0 2t. u,g0g k(ube41ckhdzeif a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m,z.tf )3wa(bzk ixp :lpv2(bz2 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0).bakxw )z.zbv22tz( ifp3 l(p : What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 fv p 149q1,az,bxnksfnC is at (0, 0). Whaznq,1v 9sf4bp,1 fkxat is the direction of the net force on the 5.0 nC charge?

  Three identical char1aotrh-, lvg,( e4s3i- mhfwlges of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a (hw1,-el trlf-so3i4h mv ,ag 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 bluko,w rvizm17 )xi3 p2g2lu1 y 3.0 m. At what poin 17i luv2lgkzux ,w1m o2p3r)it, 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 would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Wheao wm*1(s1*v :2 +ysom0yut tjmsm.k w 95ggjere on the x-axis can a third charge be placed so thya5u moow2vgy kjtmss+es1 . w :*1m 9mjt(g0*e net force on it is zero?

  Charge +2q is placed at the origin and charge -q is plaieb1 g 3iwm,+mced at x = 2a. Where can a third positive charge +q be placed so that the force on it b eii1gw+m m3,is zero?

  A copper penny has a mass of 3.0 g. A total of -+deb6u4f1bkndi 0da $4.0 \times 10^{12} \; electrons$ 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 a fixedf5b8m ;/wb hst proton some distance above it. How far ab/ft m ;b8s5hwbove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonc8agq0ypd3ufw9th16bx0d 8u e onducting threads which are 30 cm long. Both are given identical charges,awg8d3 6 f00exq 8p9thyd1buu 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 rhqtkn: ogi a6(0sw)z g7,t2p *noos 1the magnitude of the electric field at ,2o7 ):iwsn* h6t(kpgo ozagtq 0s n1ra distance of 1.0 m from the nucleus?

  What are the magnitude and direction of t;.ppt axlbxu( ck;96che electric field at a distance of 1.50 m fba;(;6kxcpt9u c .p xlrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test chargeh0 + lchkzd2s;. What is the magnitude of the electric field at the location o sh2k;+zhc0ldf the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of:jk: dmasb62. eaqu +l the electria:sab+ e.dq kl :6mju2c field?

  A 5.0-C charge is 10;q s)kid30m b 9e0b3aqnn,pc y m from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the loc ik;,ncpy0 e nm3d aq0q93bsb)ation of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance of99+uiw hkx4 do 4.0 m. What is the electric field at a point midway betwewku i99hx4+d oen the two charges?

  A 5.0-mC charge is placed at the 0 cjk8ed; fcx6c6unpp d+u b/d8) m mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the eljd dp c 8;+/udbukefn6)pc6x8ectric field at the 30 cm mark?

  A 5.0-mC charge is placed at thp)y jhu/jelei+ / a4vb-d xotx 3:22lze 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Ade lxtjojau3lpi 4 2 + z/hex)y-b/:v2t 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 x = 0.276fp u)g*6 0rfpc1q xck8g(3uncjai ycf2k5x0 m. What is thekc1ip (c ruqxg*6k7 p)cg5juyf0c 2f6nafx8 3 magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges ar t4er e61pl+vde at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fieldpe6el+d 1r4vt at the center of the square.

  Consider a square which is 1.0 m on a sidemswas n tvdm c 3k2;*w63hd++q. 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 mC at (0, 1). What is the magnitude of the electkca3s;+3dm+wv ndw hsm*tq 62ric field at the square's center?

  A force of 10 N acts on a charge of 5.0m m1j f g.uilhh6;zu( m2z2r1j mC when it is placed in a uniform electric field. What is the mu2mh1(1jzj. mh;z umiglr f62agnitude of this electric field?

  A particle with a charg-g u-m fg8x2kge of 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 electric field of 6000 N/C poi,/3 aid)dpl( drfw2of nting downward. What charge must ofdw,p2()/rl3da dfi be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.0el1woerq9.: 5p9kfx g jeg7 2aky+h*j0 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude ek:q5xh+k yjafgw e7.1r9go9lj2e*p and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of n0gu3 fds rpu+1u6qm9+2.0 mC. What is the magnitude of the electric field 5.0 cm from thef +g9q us1np6rdmuu 30 sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mdyk +jn7;e yxjnt:p9/C. What is the electric field 6.0 cm from the center of the 7:jk/nydey9p x nj+;tsphere?