State the law of conservatioa b;-0es5ij08pg r bfen of electric charge.

  Is it possible for two negative charges tob;4vv i.gf 2* /ouk2gzrvjw9g attract each other?

  Is it possible for a positive and a negative charge to attract each otheuly+m86 ;: u2cjfgdros;jgo+ r?

  A glass rod is rubbed with a-rycj2 x 9yjhps:t3lej(y 0.z piece of silk. During the process the glass rod acquires a po0 2.plyt39 :(jh -jxsyye rzjcsitive charge and the silk

  A proton carries a

  The model of the atom sho-aguhj+mf6. sajmvhh; + s+4jm1mj8vq)o-gows a

  A neutral atom alway5sd)n 8 r :i*vhbjmr*zs has

  An atom has more electrons th7,rq8 ttft r;fex8y i6an protons. The atom is

  Materials in which the electr qn;f0)(eu6k o2z5tjdxbek 2wons are bound very tightly to the nuclei are referred to;jq2z6 (xoe5kf)2kw t u0de nb as

  Materials in which the electrons are bound very loosely to the nuclei a5dz s xcza-mku;b 32x/9icg (bnd can move about freely within the material are referred to zc a52bz; 3(/bdxm-ksi cu 9gxas

  A negatively charged rod is brought near one end of an uncharn - +ep0phljlb ,drr yluh-/64ged metal bar. The end of the metal bar farthest from the charged rod wi-y6j, bl/ 0p4h+pn de-llurr hll be charged

  Sphere A carries a net positive charg/xlk 9.q gwe*.( r xpape7 iw;ppwun;1e, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that ;wu e xp.lp repi9q;ak1( wwnx.*p7g /is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivelh-wds, s x)g*hcla-6dqa* e3xy?

  An originally neutrap,ryvu 6j/( pike* (ebl electroscope is briefly touched with a positively charged glass rod. The electroscope(jv e*ibeu,6 r/kp(yp

  An originally neutral electroscope is grounded briefly while a positively charge1btjnlo b l8wtw+ /3y0d glass rod is held near it. After the glass rod is removed, the /lt+b b ltj38won0wy1electroscope

  A positive object touches a neutral electroscope, ands8n )p jpp7gxf;i(*cv5a l4nd the leaves separate. Then a negative object is brought near the electroscope, bc7pgv al n )i8fsx4;npp*( dj5ut does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A o)dbfw-fe)iej zm0ik+ v 48*dneutral 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 touce8*d kf b4vmj-0+ozw idif)e )h 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 4i; 6 tgiwaglxq/(+qxg g7lv-kp4 9fcthe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separataci +nd,8tu* med by a distance d. The first charge is larger in magnitude than the second cha*a +nuicm t,d8rge.

  Sphere A carries a net charge l6y -eo j hh: qb5w6fke-z7r,yj /zh5cand sphere B is neutral. They are placed near each other on an iq ecbrwe7y5hlz-6h :y ,jjk 6/5ozfh- nsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each djvqm9vy0v+ :other with a certain force. If the charges on both objects are doubled with no change in separation, the fo jmy0+d v9v:qvrce between them

  Two charges are separated by a distance d and exert mutual attracti2o2k b)6ara kcve forces of F on each other. Ifkbkr2 2)aco6a 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. What happens to tkxy:3t8cp;-dt o se .ihe force between them if one charge is doubled, the other charge is tripled, and the separation distance betw:8txkdcy -top3ei.s ;een their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separatlfx ouc *yd7c)+fmq/zo1 2qg( ed by a distance of 1.0 m. What happens to the magnitude of the fz2l)1u*g7 q+( xomfcqy /ofd corce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 qy m*o pnbbko5 f:duu 29pw84fzv;*:vm. What happens to the magnitude of the fopbopffnu8z :qdv5uk y;v *mbw9*:o24 rce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are7zb .pa- rmxw- separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50bm- pza7 -rw.x m closer to the proton?

  A point charge of +Q is pla y7wm7k vr2/xxced at 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 xyk /xrv7wm27electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the i*y3b pn;cukvuhk;:)gy2iy y2ov0- .kjm 6sbcentroid 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 + mkg y n2*yh6;;kp)is:kcubvj 3. 0iy uyo2v-bQ placed at one of the other vertices?

  Which of the following is not: vt/k5 n0lh1r.x6.0s:qylupkmjde t a vector?

  At twice the distance from a point charge, the strength of h qe7ya ;cs(q:the electric field

  Is it possible to have a zero 57 ipmp5fd9r kelectric field value between a negative and positive charge along 5 kfi7p9mrd p5the line joining the two charges?

  Is it possible to have ac56 e3 sds-uumjr83 kw zero electric field value between two positive charges along the line joining the two ch-mu5c38s rw3ds6kj u earges?

  Electric field lines near psitd s0; rhwl5e12ke1abeive point charges

  The electric field shof itu8h/v8jz)w + 8 dmk6fktj)wn

  Can electric field lines intersect in frcspv .hix/q57wgo,0uvk 8 fy8ee space?

  A solid block of metal in eley9) m)o)wx l. mwos4j0s 7vfdoctrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the blocd7)w l.swm)ym)9xo jf 0s voo4k's interior.

  If a solid metal sphere and a hollow metal sp eg8/n1m (giw ,qeteh1here of equal diameters are each given the same charge, the electric field q/ , nm8h(tee1gg1wie(E) midway between the center and the surface is

  A cubic block of aluminum rests on a wo f7r/esgex3 2ngv*m m-:w:nl coden table in a region where a uniform electric field is directed straight upward. What can be said conce/: 7n:ere2gsxmmwlgc v*f -3nrning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near aiaogb-q95cor0e . ac3n12ba) xf2 xic n electric charge

  A positive point charg*tg(oc: i.-i o ues pynk1z)x5e is enclosed in a hollow metallic sphere that is grounded. As compared to the case wiei)k: *1u gxcy5sio.pntoz-(thout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in state 09v5j mon6-a nqfm*lm,c5glic equilibrium.

State Gauss's law.

  The charge carried by one ell+ )4rbj am sgp(+njgvh:8 cb2ectron 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 proto+ v d:lqgjf0/ta-0zk./w9 krey ddvu,ns than electrons does this piece of pl:vq / l adyz9/kujr g0e,vk0.dd+tw- fastic have?

  What is the charge on 1 kg of protonsrh*x ow-lgebm1 a.);7, a idqo?

  An atomic nucleus has cah s bzx626p: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, ha4h6/sl4( awcoe 4 * qj( if,lioj)pxagve charge values of 2.0 and -4.0 mC, respectively. What is thea,qs e /cipjl f ow4al *h)(oj4x(g6i4 magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between th2a(.dct6sg prtp fscfs( 6u+7em is 1.0 N. Wcf+saft6 2(pd76.(stc spr ug hat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart v.dmj6he4wyd9il ojqe 4 ,(sm, x-,lg are they?

  The force between a c2 8h4wgyeby 1$30 \; mC$ 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 v9ea2k,rj u 915j hdgeforce. If they are moved to a new separation of 8.0 cm, what is the electriuekg,2j rv1e59 ahdj9c force between them?

  Three identical point charges of 2.0 mC are plac lgzxnahg3 liimm6/d/ 7z:99ved on the x-axis. The first charge is at the origin, the second thl:dngam3x9ig iv9 //l 7mzz6o 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 +2.0 mC is pla8 )*qs9 /* cd z7dotuvjunb;yso1/fhvced at the origin, -2.0 m C to uu9b hzd/ ys7jo;q)ot/ f 8v*dc*sv1nthe 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 azfe pz10(l 1jvre located at the following positions: Q1 = 2.00 mC at x = 1 (zl 1pjz0v1ef.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is plhw3na q*w((fm o2wwohs )8crt/e,8i 9i,rj p laced at the center 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 c ,)m, ohrt3sn r8ji(hwqc 8a2ewpifwl(9 wo*/enter charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m,;3xy , dccbzg*wj,a m52, lmld 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net fz3lmx2m,5;a,clj gwd, d yc*b orce 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); 2(ytm wjsdv* oi zp:p /x(s-b.Q3 = 5.0 nC is at (0, 0). What is the direction of2*:os-myd/t. pj(s (vp xiw zb the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices oi f q .fg( grd,*f,*nq2t3oshjf an equilateral triangle q*jfir*3gns( f,qtdg 2f oh.,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 separated by 3.0 m. At wheoivdccpc+3 jt*ih0w-yq6p o .(r d:.at point, on a line between the two charges, would it be possible to place a charge of -Q such that the ele*edw0rcc y(.i:jvioq p.6 cpt+h-d3 octrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C chargeufvu ,x .ddp:5(d 7*uuvuu0p r1 xeiv7 is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zerou7ie*5u0,df: uuudp 7(vu.dpvv1xx r ?

  Charge +2q is placed at the origin and charge -q is placed at x = 2anr mt3*jartm k;4:w;u. Where can a third positive charge +q be placed so that the force on it is zero3m;4;w:rtu*kmatrj n ?

  A copper penny has a mz,zvps m) l+cwbs9/u4ass of 3.0 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 1n-p tz8znlx1against the force of gravity by the attraction of a fixed proton some distance above it. How far aboxl8-pn t 1z1znve the electron is the proton?

  Two 0.20-g metal spheres are hung from a common 3gmrlry8d8q* point by nonconducting threads which are 30 cm long. Both are given identical charges, *q g3 ml8r8dryand 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 ts:es : pczkb 9dg; +v;:ewg3xahe magnitude of the electric field at a dig+ 9d;::w c;b3:esezx vskagpstance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electri;,v19 dzs vmvwc field at a distance of 1.50 m from a 50vwm9zd s;v1v,.0-nC charge?

  A 5.0-C charge is 10 m from a(sk z )e:fn-c: , l0jfd).f0ke mjpbba small test charge. What is the magnitude of the electric field at thejp)fdajcf b:k nemk-l :ezf 0b,(s) .0 location of the test charge?

  A 5.0-C charge is 10 m from a small test chs5-ao/t8-5xdieztjb b/( kd f ssgl6*arge. What is the direction of the e/6z5/ j s(atd -fisktls85-ge *xbbdolectric field?

  A 5.0-C charge is 10 m from a smt4h3x 8dm:bfii -t,v xall test charge. What is the magnitude of the force experienced by a 1.0 nC charge pv4xbim3xh8i:t , t- fdlaced at the location of the test charge?

  Two point charges each havw-(.bxuhz 5v ie a value of 3.0 C and are separated by a distance of 4.0 m. What v .-wih(zu5 bxis the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the)-rd wdnegq33d+1ox yfkst3+ 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm marr3 oqde +)3dx1+n-3y dsgwtfkk. What is the 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 -4.0 mC chn*q+ l3to8+,hqspki a arge is postln8qa*,+ p3qhi+ klaced 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 mCfs) 3 ceb8rwd(6tcw) w and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the pcc bfw86t) e)3w(wrs doint midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0my;jt7 xjr: ug -dogxk2hcp, ; 9px+m7.50 m. The last corner is occupied by a -3.0 mC chargh,mu: gp; 7rd m2+j xx97;k-xc jypotge. 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 the cornersxaubf.n p75vl ft *e(9 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, 1ae 5.f( lpxu t79v*fnb). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on alcpapwd e yp/(h))-e7 charge of 5.0 mC when it is placed in a uniform electric field. What y lpaw7-/ecpp)( e hd)is the magnitude of this electric field?

  A particle with a charge of 4.0 mC hasts e gp61:dkn5 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 k:cyd1xcss / 8placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball fo 8x1 /kysc:cdsr it to be suspended?

  A foam ball of mass 0.150))j3rngkgt4wc 12qqk*rj q l,nn5f( w g carries a charge of -2.00 nC. The ball is placed inside a uniform electric fiegn(tg)qkq4, k rf5n12nw*rwj3 q c)j lld, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10o-*f bfi 1-arw cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere'a-1 *ior-wfb fs surface?

  A metal sphere of radius 2.0 cm carries a cha(ek6i ask4o/zrge of 3.0 mC. What is the electric field 6.0 cm from the center of the spheres4 k6/z(ikaoe ?