State the law of conservation of electric k8p fo8v*:dp hcharge.

  Is it possible for two negative charges to attract each othta ((i;ctwogo1msh:mv r *i49;ma f;qer?

  Is it possible for a positive andg9jazbbd+40 f a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the proc hf8toc*v/1v)/ /dj f)klbj5 k8tuvlgess the glass rod acquires a positive charge and the si* blgv/k jtfju)8fl/5c /k vh18) odvtlk

  A proton carries a

  The model of the atom sho j:.vtueh l f2h5s6/vdws a

  A neutral atom always tv1m2w1fiz c, has

  An atom has more electrons than proton/6 y):xg3xv,ie ddoh5bmej0 l s. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refetx+wzjnx 8b6 qs6p48 rrred tw+ 4668bpnxrzqxjt8 so as

  Materials in which the electrons are bound very loosely to the nu16 c6u,zmoslo clei and can move about freely within the mateuocml,z6 o 1s6rial are referred to as

  A negatively charged rod is brought near 0k4x bryqsosbt 9; 73kone end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will obq4k0s3b9y sxrt ; 7kbe charged

  Sphere A carries a net posi. / 1drdvtc8fb;qm qb7tive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounde;qd fq78vbb m.1d tc/rd. Which statement is correct?

  How can a negatively charged rod charge an electroscope pokc:yh84 t e4b9v nqff;sitively?

  An originally neutral electroscope is brieflyk -v-2t7+d 7hmp htbg 43yoakz touched with a positively charged glass rod. The el+ 3hk 7amk 2tvdgoy4t z-p-hb7ectroscope

  An originally neutral electroscope isuezm7f9:n ; cm/sjx *k grounded briefly while a positively charged glass rod i:kxmz 9ucm*n/e7 ; fjss held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and th6q *xu; 6.zuk42nagr o b4abuqe leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happen .4xrq* z obk6qu aan2ug6ub4;s to the leaves?

  A large negatively c6m-tg4pxze t;( q6tscharged object 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 role qszx6 t6-p;tcg m4t(ls 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 Coulomb conf0:zkdk: 4 bnxstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Tms-v d4 et/.xxhe first charge is larger in ma e/x.-vsmd4xt gnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. T0a1jw15ipmpls)7ayi+wy bh-hey are placed near each ot+by 1a-p ijw) hp07ami5yl1sw her on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a cer/ bxx3z q-cg;gtain force. If the charges on both objects are doubled with no change in separation, the forcegg /;zbc 3xx-q between them

  Two charges are separated by a distance d and exert mu lh up3q6zuh-,8 ym6zytual attractive forces of F o8m6 ,zl uhhup6 -yq3zyn each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other*af0 gu +8wu-lvagk j. with a force F. What happens to the force between them if one charge is doubled, the other charge is triplu+f- *wv ga0luaj g.8ked, 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 16zipt9ytn e86u t2 fo/s zz(q(.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the firs6z(z /e6( 8quoi2ttpyzf9stn t electron?

  An electron and a proton are separated by a distance of 1.0 m. f9c*9dfm*6q4krp4uy20d*f l p 9 vfpqmgk5sy What happens to the magnitude of the force on the first electron if 9*cyd9fpm *y fgkdfk0 4u6sf 5 rmvp9q2 plq4*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 th9wd qe yu-.yj-9h)qwj dpb ( 71h1fllo the size of the force on the proton if the electron is moved 0.50 m cu1)q.hbywh hl7 y91de- qj-df9( jplw loser to the proton?

  A point charge of +Q is placed at the centerkhx oqmxf4nj.;p8qq-z 4ag 93 of a square. When a second point charge of -Q is placed at ogqka9pm;zoq 4 8qnxx 34 -j.fhne 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 pla(p;k6 -i/ brwv 0sheymced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostaticvh k6-;wmbr(0/s yepi 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 vectog) 9ih enc48)2apq*fvjz /j zsr?

  At twice the distance from a point charge,jn; h (swo78oo8 p1ykn the strength of the electric field

  Is it possible to have a zero electric field value between a negat1:y 01 aywpk.0vkfx1c t.j oekive and positive chaa yckp1.0k1.1w0tjxkv: yeof rge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positi.p2txrm5x2 rflr j 2f5 y/t2 tb0hbbg6ve charges along the line joining the two chargrjm5x5/ ygt2pbbx6 022ht. r bft 2lfres?

  Electric field lines near psitiv6)vv2ibyllohxb vy*f( .f10 le point charges

  The electric field shpl7dj: f; u2jk+kl)te 0w(r xgxy mob ,2baf)-own

  Can electric field lines in-nz / 2y:qncmvtersect in free space?

  A solid block of metal in electrostatic equilibrium is2x /1u hfcz:uz placed in a uniform electric field. Give a statement cohf2u/z1u c x:zncerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eachs/ + gwc * yo7r5eya /wxl 76)clq7ut1.asdebh given the same charge, the elru77b/hog5c6*)s lw lxyy a ew+a71cd .eqs/t ectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region f (4w6gwusy kd:gd5o z8zy5;uwhere a uniform electric field is directed straight upward. What can gk 68owy u(5uz45:zswf;gyd dbe said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric ch)m3 f 5h5/jnc9fhd) 4dv,mbouuml8bd0 t pw9karge

  A positive point charge is enclosed in a hollowoo: znr.u 8t r1b2ky 0o8n5fdw metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly1o85tnz:nyu rrdk obo.f 8 02w above the hollow sphere has

State three properties of conductors in stati)zb2-dx/xc3lni o bofx2) b*nc equilibrium.

State Gauss's law.

  The charge carried by one electron ,n)rxzgb p+vwj y.00bis $e = -1.6 \times 10^{-19} \; C$. 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 mq v,:r-uz2 *atx.m6eg0y4z ry e+gnlvany more protons than electrons does thnz:gm e.a4- u+ yvge0*qzrlyx,v6tr2is piece of plastic have?

  What is the charge on 1x(s-h h.ndyjrxn sc63u4/quu z8*0lk kg of protons?

  An atomic nucleus has a charg:ihys -4jd9w6diph e5e 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:g85d3qyxxlj) *w izy values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric8yj)* l3 :zigy5 xxqdw force between them?

  A 1.0-C charge is 15 m frv-4o3f*g /nq qf7b m1jw1 y5lntj5dagom a second charge, and the force between them is 1.0 N. What is1/1ya vd573t-njnof*wl fgm qg4b5 j q the magnitude of the second charge?

  Two 1.0-C charges have a forceqpbudl+.) uk : between them of 1.0 N. How far apart are they?

  The force between a 2bmd. l tgnp, c3;qvuss9x) i)$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiencv ,v8ne-tdl.ce a 1.0-N force. If they arcv,t.ev 8lnd-e moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fit f1*gebk8z4ct ;tm0g-b;iwerst 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 the charg-bbee * z4 g;;1mi80 kttcwtgfe at the origin?

  Three point charges are placed on the x-axis. A /gabtl84eau- 3 k ,vsg8 z9yj.g-oj hrcharge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4s b g/lyk3r ,8aetj .h- -gv8g9zouj4a.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 positions: Q1 = 2.00 mC -9ypx.nq4 zdh o,wz*f. k-pyoat x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. Wha q-o wxhky. .zd,np*-p9fo4y zt is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center gew6(4 v p+)cn9sy7p)hglqg kof a square, and a second point charge of -Q is placed at the u 4ev+l)y s h9kg)6pcw7(pgg nqpper-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 nC is at (0, 0.10 m); Q8 cou.o-4t6hmjioqv03 = 5.0 nC is at (0, 0). Whotv cj.oi8q 6o0-4uh mat is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 .v ;hcc5kstk 3i ,tt.r= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is tch.3tktk.ict,5 v sr;he direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC a a8)prl(vb tys)v r*ul961hya re placed at the vertices of an equilateral triangle which measures 30 cm on9y(u vt6apyllra*8 s1 ) vhrb) 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. yp nguum3(ep4sa :. h4 At what point, on a line between the two charges, would it be possible p(nye: u s4ga ph3u.m4to 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 anc pgch2y* sr(d4 1, sdgrcy*s1d a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the n*2 p*cygd1cgs 4,(d1s srrch yet force on it is zero?

  Charge +2q is placed at the o9m; i v exv3p:w q/7nj2zrur,wu+,da erigin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it isx nedz/9aiu3wv r ,j 7wm+;,rv p:e2qu zero?

  A copper penny has a mass of 3.0 g. A ton nuqt/wh:0yyz4 4ta 3tal 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 gra*-)dshole9 v/ qa mu*lvity by the attraction of a fixed proton some distance above it. Hool) /9*lmev q-us *dhaw far above the electron is the proton?

  Two 0.20-g metal spheres are hung from c/up z+osf v9;a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them /os;vfp9c+ uzapart 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. Whahhy 8c6-ap icw( ek.8at is the magnitude of the electric field at aep8ykc8-aawi (6hc .h distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.570m r.vg hx y1yhsbek mxr96c8j9ji+40 m from a 50.0- m4skh0ry+xmyr89j 1x9. 7ijvc hb6egnC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the z 7 cep 7mpogte0r)5d2electric field atcp ep og edm5r7)2tz07 the location of the test charge?

  A 5.0-C charge is 10 m from a small test cu .yta.:h tsr530m itbo9j av1harge. What is the direction of the electrityb3 mo1j.vha5 iu t 09sa:r.tc field?

  A 5.0-C charge is 10 ms, z*-t*hqhs5+pk z qwc7m ec, from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the loca-zeqhshcz q+p**wct5k s,,7mtion of the test charge?

  Two point charges each have a value of 3.0 C and are separated by axq l 38ujm *8pb,k* jhi4polb; distance of 4.0 m. What is the e4i ;l3* kjbpluph* j8qx 8bmo,lectric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sti hw:q 5psz0 5a,pj+r*ebbvd*l ck and a -4.0 mC charge is placed a5ah,rzb*5qpjbpvl 0s*w+:d et the 50 cm mark. 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 b t/+a;ssnsl1,rex)e charge is placed at the 50 cm mark. At what point osrx1/ et + e,nbsl);asn 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 =t)*mwbtug4x2d3s4yj 0.20 m. What is the magnitude of the electric field at the point midway betweewb uj4*23xymtg std )4n them?

  Three 3.0 mC charges arxau/gfrx az yz5d8(rd ,u/. c+e at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charg8xc(ard,+du 5/xg/z.fryz aue. 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 6 o 1r12 vk,hy,e*zd t.pazstacorners 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). h2k zv yraz.tdso, p,e*t1a 16 What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of * h0(inbi9xlxs(*rfb 5.0 mC when it is placed in a uniform electric field. What is the magnitudx 0si bf(hrlni*9*xb(e of this electric field?

  A particle with a charge of 4.0 mC hk ;daj9c, je.uer/a)zas 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 0.12o75rnjyk x/j90 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended/ x n5kyjj97ro?

  A foam ball of mass 0.150 g carries aak bew7p l;2t*,r,rhr charge of -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*,2 r, ekrtr7;lhbap w electric field?

  A metal sphere of radius 10 cm carr/uzi7:vdzzh(ss- i qxg92-m m ies a charge of +2.0 mC. What is the magnitude 7m2smxg-zhzi -9 (uqvisz /:d of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a chj e:p)o6wiv ef g6xsj-,o:(ifarge of 3.0 mC. What is the electric field 6.0 cm from the center of the-)igj:jwsiepo,o f 6fx(6ve : sphere?