State the law of conservation of electric chrdg.jmg * bs 65+tqny-arge.

  Is it possible for two negative charmiphym b+.e,j:ff9q 9b5ik7k ges to attract each other?

  Is it possible for a positivedtj0.tzl-zoq ab 1 ,yukt9yr w941z-z and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Dkv..r b,(e.iv hf/ wbh/8vmtiuring the process the glass rod acquires a positive hbt..,v(vvmrf eiw.8 /bih k/ charge and the silk

  A proton carries a

  The model of the atom shows aiichl ;9 e3psqo cpyx a/)0.7h

  A neutral atom always hasovvl1;n.vl a8

  An atom has more electr(uk.d:np5igonx-e.y f .tx ,t1:nlizw8s t3wons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are referjaz;kft+x4 vzv7/o55u(k g yzrzz5(5gzk; a7kf/tv+jv y 4u xoed to as

  Materials in which the electrons are boundqu7*)7z)oxv te3qr1 s8zij bk very loosely to the nuclei and can move about freely wit7v83 j)eo uqbz17rikzx sqt) *hin the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bj6zwz3 i :tbkq4sua84z,l9 ks r9dhk9ar. The end of the metal bar farthest f:6kjk4kh, 3rsz84z9i 9ld qzsu9wab trom the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is ne ie7/voj(la+m jsy*o d-evt;9utral. They are placed near each other on an insulated table. Sphere B is briefly ao s dejjm+ytov-*/ el( ;9i7vtouched with a wire that is grounded. Which statement is correct?

  How can a negatively chve5(7k utjw 1 gmh7.wppd4djw.9 i3qlarged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a pomdqv pv75v2ic. zh4 )hsitively charged glass rod. The electrosco)dvvz5q.m 7p4c2hhvi pe

  An originally neutral electroscope is grounded briefly wcio m6r27ikc; hile a positively charged glass rod is held near it. After th;crcimo i276 ke glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separatek5 ph.afj 1oh*. Then a negative object is brought ne 1oaf.jh5k ph*ar the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on c.-06et)f pc 82hztq afau(pvan 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 fi(fp c0.pf-c)z6 tveq2hta 8uarst 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 constan-irkob 7cd0vv7gq/d+ t $k$, which appears in Coulomb's law?

  Two charged objects are sxj c,e(*y9.*so iq5zp *mh-csmz5enseparated by a distance d. The first charge is larger in magnitude than the second char*sj h s-9.pczmc5znim*q(5eso,* e xy ge.

  Sphere A carries a net charge and sph7* u )tm5wv1 ,))(wses1js jdlss acygere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between th) g7d*usys51)lwe,j) ajs s m1tvs (cwem?

  Two charged objects attract each other with a certain force. If the chargfo6 .fq:ytwx 0es on both objects are doubled with no change in separationyo: qwt0fx .6f, the force between them

  Two charges are separated by a did,(8v dn1xuhq9 5 xeokstance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the neo95x ( ,nxq 1huedvkd8w mutual forces?

  Two charged objects attract each other with2 ,uhis b0-m/ u ie+jz.ipeb*o a force F. What happens to the force between them if one charge is z,/ + buiboihe p-uis mj2*0e.doubled, the other 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 prak t,gc*b2wa36s 2(f uhi+cu f-ze1jv oton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the p61uwb,szfca hag+eic23 * fv- kut2j (roton if a second electron is placed next to the first electron?

  An electron and a proton are separated byxg;9av+ yaz ja ks6i7: a distance of 1.0 m. What happens to theza:+6sxy9kgav7i a;j magnitude 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 distance of 1.0 m. What happens totfg6 z,/nne7dbz b6*h the size of the force on the proton if the electron isdtbz7,e n*6 gf/zhn6 b moved 0.50 m closer to the proton?

  A point charge of +Q is placed atavg0zvd;z(jv, ic *0 b the center of a square. 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*z d,vai 0;v0 gz(cbvj?

  A point charge of +Q is placed at the centroid o h)g*etk xy92zf an equilateral triangle. When a second charge of +Q is placed at one of g)xhe9ty* z2kthe 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 is not a vect*c;rmyo, vs;cor?

  At twice the distance from a point charge, the strength of the electric field+y6h zvsv sw44

  Is it possible to have a zero electric field vglyvr+ai6ip7b- b en00p 7 *--nzqlmmalue between a negative and positive charge along the line joining the two charge0-glyvim-* n7zblniq m -6a7+ebpr0ps?

  Is it possible to have a zero elect1 p 8++ f-vhhw mvrs-l9wuqmq3ric field value between two positive charges along the line joining the two chargeq 9 qr3uhlmhv1s8 v-wfwmp-++s?

  Electric field lines neak8d r,1p3ojq pr psitive point charges

  The electric field s0s n+cgsq /uq.2iwhi9gd f.j6hown

  Can electric field lines ip0y, i6zynonc.4oo i.ntersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifor* xzrs 1sy03jdm electric field. Give a statement conzx jsryd10 *s3cerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameterss-pimanbpn m*/ 4jy8 8 are each given the same charge, themijbp-*y/ sm4nan88p electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where ao )3(ur bg/jwf uniform electric field is d/jg rowb3) u(firected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is ins. 4 eeccs-n x)s*s q6t2tb8ye electrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a m np. u(cqrvdqa 5 q;lyt.c.ncm:5pjc a *z76:hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the eqy.:pm .5tc6dqcvpa(u c 7q .a5*:n njclz ;mrlectric field at a point directly above the hollow sphere has

State three properties of conductors in static efiycjr4m51t ul n (q:-quilibrium.

State Gauss's law.

  The charge carried by one e+8/8,wyce1tsrbh x qk( dbem 3lectron 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 1k84tc87 z7 mtdt6eaolpna4fmany more protons than electrons does this po7p em4tn1a7t z864af kldc8tiece of plastic have?

  What is the charge on 1 kg o saen8kc,q- )s0gcu *gf protons?

  An atomic nucleus hav ust,xi vs6 2,y0z4zts a 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 aw+k nklv)e4e 5nd -4.0 mC, respectively. What is the magnitude of the electric force betweek45e v+)k newln them?

  A 1.0-C charge is 15 c+kdid ,,f uau-ip)o*m from a second charge, and the force between them is 1.0 N. What is the magni ,k,u+oidu aic-f p)*dtude of the second charge?

  Two 1.0-C charges have a force between them o (bu.9 -k5hv2e5mykt p im1zmif 1.0 N. How far apart are they?

  The force between a c+wt5cc qi.xx ttl6r 0a/zp91$30 \; mC$ 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. If th s3-tyg.mi8 s mp+j;chey are moved to a new separahym- sgtj3;i.+p c8m stion of 8.0 cm, what is the electric force between them?

  Three identical point charge/paqf5en 6o8cpj* 2r gm9ysu /s 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 t5n / y9aq/8p seo6mrc pf2jgu*he 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 placem )fsv:hb wgkbvw-80 -d 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, andbww0msv8bg: kv )-fh - +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 following posiys4xl 4 zvfq7)/e 6sym3nqbs9tions: 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. W qs m 7v4bfneqy9x3y4ls6/ z)shat is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q rbw/ snccb, c4qa0- 8his placed at the center of a square, and a second point charg,n h-b rs4aqc8/ b0cwce 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 third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 ntl1q/53p f3la,pzp)xzpp hsn9,)zd vC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the nep dlhtz1 p5p vqx3z) 3zp9s,,flpa/)nt 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 nC is a2dnb/htqe9neg(l(j +t (h2qebt9lj/eg ndn( +(0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges o 1 ad9y* npje3sskuqvgc v3 oiof4(,5.f 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the elqg9e*, yak isof.ov4 u13 pcn(v53dsjectrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated bzu/p hok4i/eq w(7a 8py 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 electrostatic force acti eu/i48zo7 /pkp( hwqang on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at+ uk9v,u2 b0krs 0wevyk2d k:i x = 4.0 m. Where on the x-axis can a third chab 229eiy0sv d0w: ,k+vkk ukurrge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x zrj+w s7ifr 51= 2a. Where can a third positive charge +q be pw s5ri1+zjf r7laced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totc0 n m(lu;z:ed2w rg*jkcj .8tmk84o bal 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 8mm irkor,39g0nw,ihattraction of a fixed proton some distance above it. How far gi krrm3hinw , o80,m9above the electron is the proton?

  Two 0.20-g metal spheres are hud4td551 ikw+hvdzpkg6r n 9p0ng 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 threads +di rtn50kd461wzdgpp 5k hv 9is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge o p-mrc(dnd5 v9*p38o +pwbbfyf+6w p if +40e. What is the magnitude of the electric field at a distance of 1.0+mp rpv( o8-i+cp 6fdp3wnb*w5dfby9 m from the nucleus?

  What are the magnitude and direct(szu4rafr u ; 8 +xp;g:1fmkxdion of the electric field at a distance of 1.50 m from a 50.0-nf:(r m;r8u;pfx ukga1s4dzx+C charge?

  A 5.0-C charge is 10 m frl+ e n0g 9k(pwivn3 f/ihcj)i;om a small test charge. What is the magnitude of the electric field at the location of the test charge?0v/ e)lncii 3+pfi 9wg;n (khj

  A 5.0-C charge is 10 m from ol(-h (yxgujcy onht590mu/f0n)x n 2a small test charge. What is the direction of the electric fiely nx5 (-()no9 h / uh0gmyx2juf0ntlocd?

  A 5.0-C charge is 10 m from a small tesw-* x 4fzdsnc1t charge. What is the magnitude of the force experienced by a 1.0 nC chargez4-w*sc fnx d1 placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and c y/c3f hfe0aac:--ou6qhim9afi :fyn1 g2w( are separated by a distance of 4.0 m. What is the electric field at a poiacu h 2h gffe0aw6iyy /m f-ao-n:3(f:qc91cint midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and hn)yq0g;oz +:rf-ij v l:hae ,a -4.0 mC charge is placed at the 50 cm e:+h 0 -zon;glv)f,i:j ryqhamark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a mw mmaa) /jm5u -l)uf6:wvl4yzeter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a linv)lma) uyumz/4w6alfm :w-5j e joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC a (dvxc 1+uejg0q* vzx o*d,vvs7kk9w)cgcl36 re placed at x = 0 and x = 0.20 m. What is the magnitude of the e9q,v0u7vcj+ dx)gv36cg 1z*wloke x * s cvdk(lectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 miq goi,g7h 9u-. The last corner is occupied by a -3.0 mo gqii-79uh g,C charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a sidegg,c p77s wyr9. Charges are placed at the corners of the squarepwgr9g77c ys, 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 center?

  A force of 10 N acts on a charge of 5.oiu5j063 hsds0 mC when it is placed in a uniform electric field. What is the magnitud d6us50ji hso3e of this electric field?

  A particle with a charge of 4.0 mC has a mass ofq2 g:lxl z7eo jztn1hk8b*3mghuj6; * $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 1 tqj w(wr(+5ur/cpby c8jv ;;1 psvedg is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the b5sed+y(rju 1;/vw(ctcjb; pv rp1w8qall for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.har56ff3bq7/5vrgl /) cfp0b* eqtr9itl .se00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What a/ctrth aq pl/i r)6s0vr*g3ff7b ef 59el.5bqre the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the mag-xv8abc5gk0l3 w l)6y)oizby nitude of the electric field 5.0 cm fr yg)3ov ck)0lybz5 b6xw8-aliom the sphere's surface?

  A metal sphere of radius 2.0 cm car iwj22 580 exq(kpkpcqa/uu,u ries a charge of 3.0 mC. What is the electric field 6.0 cm from the center 2qxau2j ep8iu pkwk0qu/,5(c of the sphere?