State the law of conservats9tz 1oicz93nion of electric charge.

  Is it possible for two negative charges to at fy85*(:tfaz;w) sj d*qu wkfotract each other?

  Is it possible for a positive and )8sjd -0,c4vt uc4a jvuiuy h/a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the proces:u7myqb:jr 2fcja(p q8w 0mo6s the glass rod acquires a positive jcb q6r2fj8y(uqwpm 0 : ma:o7charge and the silk

  A proton carries a

  The model of the atoxob+ fg1f7/q2agr6 9l-aci91tv nkuj m shows a

  A neutral atom always ha+ j)x5cx7ahxvs

  An atom has more electronq8s 2 kxmsnwr+nr7 ibal9+ 5 bq6pz z15,pvsh/s than protons. The atom is

  Materials in which the electrons are boundg-ud6d,n /:k x7 jzdtds,m2ir very tightly to the nuclei are referred t x6s7u2djit rk,:-g ddd, /znmo as

  Materials in which the electrons are bound very loosely to the nuclei and can moh8 y)tauo7f sy4pquzjc o ++b1e,v ;1gve about freely wyqo+phzuja 1s4ou ce)y, gf bv1;78t +ithin the material are referred to as

  A negatively charged rod nc z8ukvf8e:dt,e4,iis brought near one end of an uncharged metal bar. The enn8 c: e8,kf,v4ide ztud of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sph 54opie;93dh tj bwv)pere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched wit9etbi 4w5 ov )j;3hdpph a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electr:yvc ypdu-,1 .v da0yroscope positively?

  An originally neutral electroscope is briefly toucheryik w3 7z0sqe08zr.yt 5f.zzd with a positively charged glass rod. The electroscopz .q0z ry3z8ryf.5wt zs07e ike

  An originally neutral electroscope is grounded briefly while a positively m2jdcs (,vfj ad 2lyrc.iqx9xj (+ gw0i9:/srcharged glass rod is held near it. After the glass rod is removed, ,0ics xx92l vy +jrw(jga2r9jds( c:f/iqdm.the electroscope

  A positive object touches a neutra4n3 qehz. v6 yxo-etwy1w7j: bl electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. 4bj:-36 qyenevhxyzot1w7w .What happens to the leaves?

  A large negatively charged object is ,+j qm1 per1p zyg,w5jplaced 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 f me,,w+rq1 pjyz1pjg5ollowed 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 Coulomb cone 11o +;o btss8udcdv,stant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. )fmeu) 0zm fo2.xet+i The first charge is larger in magnitude fu )xi0m)e+z fet o2m.than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are plaiq(h x/qb,3hnj- -6k8evvqa obn1l5g ced near each other on an insulated table. Which statement best describes the electrostatic force j 36 -qnox5lga n1b qi-h,q/hb(kv e8vbetween them?

  Two charged objects attract each other with a certain forvk,f9h* d z308,(;;jym j cogm rvrdvsce. If the charges on both objects are doubled with no change in separation, the force betweeny v,k;d ,98v;jhjv*frm(rsmz c0g od3 them

  Two charges are separated by a 5 9 aq.e ywgh;3ausf4: ae*r5 idjrhp*distance d and exert mutual attractive forces of F on *gei 5 9dehrq 5 aua;:w4fjhy*sr3a.peach other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. b bmg4gvdb7ns-d02z6j (8wlz What happens to the force between them if one charge is doubled, the ot zbnzd4j-m76gl8(0bsvwdgb 2her charge 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 separated by a distance of 1.0 m. What happensx xp4s;r pdy1a* c:s+x to the magnitude o:sd1x;4 xr+ ypcspx*af the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distanc +: ejutzv6di, 0zl9geg8ra4m(x2t tre of 1.0 m. What happens to the magnitude of the force on the first electron i6+0 et ge:rulajv2( d8rxtmz9zg4t ,if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whatrvrtg r9o xl9ztj r0ziy )/:4-/ngua5 happens to the size of the force on the r0r t/r i9jgary45)g/zl-9t xoz:nv u 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. -qzx 3prc+kk xs .g,meia;d 4,When a second point charge xqs3ac idg+ k zr,,e xk4p.;-mof -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?

  A point charge of +Q is placednj a23gar97s4u4q98wukul gl 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 charge due to a third charge of +Q placed at one of the other vert4r93 l8j7aug2au9lw ks4 gnuq ices?

  Which of the following is not a4,7 fr7cvb2.smz;yu3 kghxsa vector?

  At twice the distance from a point chaf7lwc+x5yo 9;( yn qwdrge, the strength of the electric field

  Is it possible to have a zvg q yomi*+e8nwba .1o:t 7-hpero electric field value between a negative and positive charge along the line joining the8m:7aogw e-p.vb+ q1th yn io* two charges?

  Is it possible to havei8 m0/1m:/zk u.)jddfn bpg ah f1x.0f4mjmbp a zero electric field value between two positive charges along the/m uk.40 0m) fnx .jd pjz/g:bbamfhi1f pd8m1 line joining the two charges?

  Electric field lines near psitive - ea *vqj) tt4ckn.e0wpoint charges

  The electric field shb 8myb(rkcf ;;own

  Can electric field lines intersect in free sq0wfn2u *;ltxbz r9xhysb45,lhlh0woo l,6:pace?

  A solid block of metal in electrostatic equilibrium is placed in a uniform ele.m l q7o rhrepm6 w:anrl(-:0ectric field. Gipell7 rrq w0:hmr6n:e-(ma.ove a statement concerning the electric field in the block's interior.

  If a solid metal sphere an/i gpfy46z5c, lts5dld a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between5z /,lcsiy5t 6dlf4 pg the center and the surface is

  A cubic block of aluminum rests on a wooden table in ar*scnds0 ) *,. rtjgfn region where a uniform electric field is directed straight upward. What can be said concerning the charge ojt*rnfs )d* sr,g0.cnn the block's top surface?

  If a conductor is in electrostatic equilibrium near8tvf iatc:5a05n*cpqk ht o)m4 hga;( an electric charge

  A positive point charge is enclosed in a hollow metallitz tnv ;mq948q*i/pyz c sphere that is grounded. As compared to thez*zn i/m t;p9y4 qv8tq case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in 5 2)pffqjc5 gxstatic equilibrium.

State Gauss's law.

  The charge carried by one electr3u x5*eby*dm son 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 mo/dcwmdv w3c:2smu+*mre protons than elect:+ ws*dw/v 2ucmmcm3d rons does this piece of plastic have?

  What is the charge on 1 kg of /fd8u/yqcd)h-v9 epb2, tbxhxikds7* 5h jy;protons?

  An atomic nucleus has acs6evr72bpg. 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 o++ *ghtt3ubrasyg 0)if 2.0 and -4.0 mC, respectively. What is the magnitude of the electric fo++ty0ui3g hgta b)sr*rce between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is g d2raj;:*n gs k)p)coef3os 91.0 N. What is the magnitude of the second charge3 fe)s2)p9*s gooa d;gnjrk: c?

  Two 1.0-C charges have a force between them of 1.0 N. How far apartz)d2pwsogg( fa1ir/1/.u w , jgc6 cgv are they?

  The force between a 9*cbm q k:bkq+$30 \; mC$ 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 .h2 8dqc cpne2force. If they are moved to a new separation of 8.0 cm,n 2pdqehc.28c what is the electric force between them?

  Three identical point chargx t5dne bjyelc:d-d *6ku-+s, es 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 ictj5ds+:en6k y dlebu-- ,dx* s 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 *ungt g8u4c(q w:)bfwrjy;kn;8nuq7on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to thc4 b ;y*w w8f7;unn(ku rgqnq:ug)tj8e 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 xng,7: /ajye9 .x rfuep *c ;+afuwnc1are 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 magnitude of trpn + y 9g fe1x: ecucf;w/a.jan,xu*7he force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point zw9)v 7 n5cbmocharge 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 if a thircm9 )7zw5bo vnd charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0);8u7n*5q vhpkn zk.l,dk4ikeu/x 9 k 6d Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the netukdeinku85 d9z6k.h7p *4v n,kkxlq / 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.n(w ie qn9sq9x +x0/yb10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charge?qnqb9xi e9wny+ 0( s/x

  Three identical charges of 3.0 mC are placed at the vertices of /mr ce.loxlc+ )vm9qj f: lt:k6 zpm+fu7u7)jan equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any onj uc67vko:rf+)m ctxue.mljf+ lz/:q m 9)lp7e of the charges?

  Consider point charges ouhf 2lhmy m*a7+jk)y 2f +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the eley+a j2h km7uy*lfh 2)mctrostatic 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. Whe42ksmtj1*6hp ho ,h lvre on the x-axis can a third charge be placed so the net fkh2h v4 h,s ojpt61*lmorce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whe +qb(gf rhf5kn9ij5yzj+5kohbiu+ ,;re can a third positive charge +q be placed so zho bub5 j hk+fn,95+q(jrf;iykig5+ that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of 4d veg96e-z0 e;fv gur$4.0 \times 10^{12} \; electrons$ 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 u 41f8v mi-tfmg3 ze 10fxpnre5p against the force of gravity by the attraction of a fixed proton some distance above it. How far above the elect4efr0 e 35if-fn1gt vz1p8mmxron is the proton?

  Two 0.20-g metal spheres 1,p yz2g3f(n jh 8gtlbare hung from a common point by nonconducting threads which are 30 cm long. Both are given ident3np1j ,tlg hb2 8zfy(gical 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 abx,nt kczj0wlj06p0 h358g zw charge of +40e. What is the magnitude of the electric field at a distance of 1.0 0nxjk03t5hwc0z8, wgpzb j l6 m from the nucleus?

  What are the magnitude andz dwkm+5*fa/fj50c jc direction of the electric field at a distance of 1.50 m from a 5czw/fc j5jk5a*f d+0m0.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is thih47 8q0n uzwbe magnitude of the electric field anhzu4w 8q07ib t the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direct+ k :tffo: wxqvq+u 7 5crousfj.+7,vaion of the electric fi +w5x:tv aj+.uco k+qf osr7: ,fufqv7eld?

  A 5.0-C charge is 10 m from a small ti /4w.5m//bzwfrlh hadiz:b 3 est charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locationwrh w3/zmb./l5f/ih i bd: 4az of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a 1y+oezwwl (b/v4q 5 2m /zllsadistance of 4.0 m. wl1vllqma2zz seo/ b +/54yw(What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark o5 hudooz 4/0dpf a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Whatzu5dohp/ 04od is the electric field at the 30 cm mark?

  A 5.0-mC charge is pla q en4v98yvgz2ced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a ling 2env948 qyzve 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.or m7(v 8kaah820 m. What is the magnitude of the vk7aoh8 am8r(electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sidyo3o6q reqa82xn3l z6e 0.50 m. The last corner is occupied by6q a eryzno3loqx3 268 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 at4l. hhs0qo tvbg -/jk:;b3 bfk 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 electric field at the square's cent ; k4bvfbhh b:/sqlog0jk-.3ter?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in aj :win/(eestl- s9f o+ uniform electric field. What is the magnitude of this electric fields/sf: ej+e9wn(tlo-i?

  A particle with a charge of 4.0 mC has a m8 l eg:7cvvlmg)fp8c6ass of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mabi5lhe -yo6/v ss 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on teyvb o 5-/lih6he ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of5jz m xty19+sh -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 m9jtxzy+h5s1?

  A metal sphere of radius 10 cm carries a charge pmr ,jbwojr7x-o2z 73:ej n4 tof +2.0 mC. What is the magnitude of the electricz-3ebn x: 47mrjo7tpo, jwrj2 field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3pqavqp, v/ ma+im8;sz46w)a ma 76ivd o ab,a-.0 mC. What is the electric fidi/ a q,w qava6 )va,z+bma; -ov7 8mp6pi4asmeld 6.0 cm from the center of the sphere?