State the law of conservationr71 qnwiw--c1rdua 5 b of electric charge.

  Is it possible for two negative charges to attract eacw.nwa;t tsi -/h other?

  Is it possible for a positive and a negativ,tu1(4 zsqhv1k uq-wr e charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glax 83ji sc: 2cktph9r jebe.3t0ss rod acquirs.rpc bc h3x0etj8 k3i2e9:tj es a positive charge and the silk

  A proton carries a

  The model of the atom gjrz)8;cf 4 uashows a

  A neutral atom always haxe, kb9:4zny es

  An atom has more electrons than protone rje7 (: 7sd+ xvv2yx/3qvtops. The atom is

  Materials in which the e +i,gfclpdv3 ;lectrons are bound very tightly to the nuclei are referred to a;3df+, lgvpics

  Materials in which the electrons are bound very :tn 7mor w+xx tc**n1.jksn:bloosely to the nuclei and can move abouttc1::7 n*w sjn*.rnt b m+kxox freely within the material are referred to as

  A negatively charged rod is brought near 1yx.nc ,x ndkscd- c-6x b9)muone end of an uncharged metal bar. The end of the metal bar far1dc6.-bk9)xcx mx,ny- dsu nc thest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutr-mh;-uyz3:qnzk-/ jpeoxdr 8 e nx1rlvrl (51al. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statemen:or3 1nd 8/xxrl (- vumk5j e1nzql;rh e-pyz-t is correct?

  How can a negatively charged rod charge an electroscope po 7yxb)ng2/aa4 ebq;gzsitively?

  An originally neutral electroscope is briefly mvm:e .:f4c0rl)iof ztouched with a positively charged glass rl4m:.ocvmr zf0f:)e iod. The electroscope

  An originally neutral electroscope is grounded briefly while a au w8 (jd4y(wg/yx ei0positively charged glass ey0g u iwy(4dxw8/a(j rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the l enn /ru((jc6neaves separate. Then a negative object is brought near n6/n(ej(c urn the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is pla9b7tya omeuu9 t-peews0)wjx ( -el0-dz k:0cced 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 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 objectwct7ymz)-u- ew909(tkebx a0 p:se lj-o 0eud. What is the final charge on each ball?

  Charge is

  What are the units of the Coulwa/r d(b 2k9neomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dist/./n ab/izt6 jc5;n lq fzkj jjlc43y:ance d. The first charge is larger in magnitudnyq/j jj5nzi bk/.z 3llcfca4:t; /6je than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near eias.6k ch0ln* odtp3 7ve(6fvach other o*(f l n6c3i7 0d.ovesthva 6kpn an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each otv7t vhx 9o (qafcg6(9rher with a certain force. If the charges on both objects are doubled with no change in separation, the fr(qcf hv (g76v9oaxt9orce between them

  Two charges are separated by a distance d and exel o 5fowsb30011 impmbx 3h)p*;lfgnrrt mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the f lo1gml)pbf3 *b;13wm 0n0proixsh5new mutual forces?

  Two charged objects attract each otheil73r+q . 9x9y8igegem3g d6mq. kayltaix24r with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-mdylm97ykget3g.68i +x9 4g qq.32xirl aeai fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of ee cna2lijwc(:(x; j/, nq+3svwu(pf 1.0 m. What happens to the magnitude of the force on t: pcen+ e(iw, a/w;j2s v qu3(nl(jfcxhe proton if a second electron is placed next to the first electron?

  An electron and a proton arfs07d.vo- ej ee separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placedd7s v0fe eo.-j next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens ya ct5z g ik3)jvs) kg)qrl10.to the size of the force on the proton if the electron is mokqrtg) )k a30.gvjz )icy51sl ved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center o,nr6- ).vakdhy-wf eff a square. When a second point charge of -Q is -e ),wkv.f6h afry dn-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 placed at th o;bonib45bh ;e centroid of an equilateral triangle. When a o;bbo;nhi5 b4 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 vertices?

  Which of the followi9op j qak0u* p(x0u6awng is not a vector?

  At twice the distance from a point - ,3j)cav:o:bt fifyvcharge, the strength of the electric field

  Is it possible to havedgo:l ahn08q57hp6d b a zero electric field value between a negative and positive charge along the l:l qh7d 5h60gobap8n dine joining the two charges?

  Is it possible to have a zero electric field value between t.1t hv,n qe*as)1hp4 , sme+i cn7urozwo positive charges along the line joining the two)1s r.pcat,nezsh1,7o qve unmi +h*4 charges?

  Electric field lines near psid,ew paf*l*-w.opq gk 0gt f7*tive point charges

  The electric field sho2cbdr;ku,u8v 5 ic-h rwn

  Can electric field lines intersect in free zov t6gyxt- hs cxi-j hep;9adlb-4,yzg4**3 space?

  A solid block of metal in electrostatic equilidqz m: 0 jpwgkg89(0 7ley,xyvbrium is placed in a uniform electric field:g 0 dl0pgwq ke98mxvjyy7(z,. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eac4zlfxz :2 .( 6jsvn e5lfjw8csh given the same c4e(z.l 5j wf2vsj:nc6x zf8l sharge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table ii /ve7 r*wh8-v.yz t2fyv:ui pn a region where a uniform electric field is directed straight upward. What can be said concerning the char7wy.y:vvri-pu 8ez 2/*t fvihge on the block's top surface?

  If a conductor is in e9y .g1kr3np il d)ntcjz sc55;hw11delectrostatic equilibrium near an electric charge

  A positive point charge is oarg;e2u 5n ts /sik+.enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric r2+toss/g5 .e ;uankifield at a point directly above the hollow sphere has

State three properties of conductors in static equm1dab k4zuso:r0l.g :ilibrium.

State Gauss's law.

  The charge carried by one electron ista ac z5u*s/usjd8e 6o6- nshgscr w03f3qo.2 $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net cha:os a60a3d km s,kpec:rge of +2.00 mC. How many more protons than electrons does this piece of pkp:c0 a: o3msea 6,skdlastic have?

  What is the charge on 1 kg of proto8lvijg7s* yfa/us 0v3 ns?

  An atomic nucleus has a charc nw0nldql;(. ge 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 chargc)7n*y lr; 82auaaza0ob2tfde values of 2.0 and -4.0 mC, respectively. Whf27a; )aryzab0t*du ol8a 2cnat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a s1gl,gim89;s.t,dx*h nckw g5ipfz x,econd charge, and the force between them is 1.0 N. What is the magnitude i*lfxkpms;.xnz1, hdc ,w9gi5gt , 8 gof the second charge?

  Two 1.0-C charges have a force r ,ezg-7g8wkc between them of 1.0 N. How far apart are they?

  The force between a :*l dsd-p-a i ixvtyb4,3qm )e$30 \; mC$ 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 they a ;so6fleu(0h(ih ci9lre moved to a new separation of 8.0 cm, what is60lo;( f ch li9eih(su the electric force between them?

  Three identical point charges of 2p eme6 k)*m+yvd*b;jz .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 is at the 100 cm 6 *zb evjm*;dmky e)+pmark. 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 ofg5r fuk .ctrva +0zh+7 +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC a5.+v rg crzha0ft7u+kt 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 = n-fel wb-aze/ n 2qqah4 yei*78/(pnx 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 the/7ef4( a-2nz xea wlb8nq/enqpiyh-* force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second poin1f-1 f9 l,r oruylvey*t charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on th*-e1yr1lov, y 9fr ulfe 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 (0.39+ : aa;iogv0d4 wksnt0 m, 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 force on the 5 4w ts:0+d ga9koa;nvi.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.aa1y bs(*d: fk0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charge? :sa1ka *fd(yb

  Three identical charges of 3.0 mC are placed at the vertices of an e ;ydwqcqj0f;d+8rcvykzp)( + quilateral triangle which measures 30 cm o czc rfpd;0wy(y;)+8+qk vdjqn a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4.fwhhv/- 1chdtf 4 he6ta4og38wt br6Q, which are separated by 3.0 m. At what point, hhhtw61 6df4h-4gce avo/rtf 3tbw 8.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 etgrlnj64 : p ix x qp4(*x6shgo3e)c*at x = 4.0 m. Where on the x-axis can a third charge be6ocg**r )p (g est 34iqe xlx4p6njh:x placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q isx-. 2s+xbt mgy1u(k+jfj0v (e s7wm jj placed at x = 2a. Where can a third positive charge +q be placed so th+ejx.(( vubx s7ym2m +sjt01jgjf kw-at the force on it is zero?

  A copper penny has a5z kx;y8;9nx z7rddqkv:7ht u mass 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 aga5u lnhk +u57u;oyy (vq 3/gewhinst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is wyhe7/g5vk+nq;h y5u u(ol3u the proton?

  Two 0.20-g metal spheres are hung from a common pbof+ v:j-3o)mc9taik a+7 n vdoint by nonconducting threads which are 30 cm long. Both are given identical charges, an7) ++:ia- kv3oanomf vdj tb9cd 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 the magnitude of thre/h ; )vp/q;v4dshd6ta 9e pwe electric field at a distance of 1.0 m from the tp/dvhwv q;;e64rhd p9)esa / nucleus?

  What are the magnitude and direction of the electric field 6 r)tk:,2xexsqsgp8gbfoa ; .at a distance of 1.50 m from a 50.0-nC charge?.t gerf x);,bka:poxs2q 8sg6

  A 5.0-C charge is 10 m from a small t y8j d,3 ioebd6(sgyj(est charge. What is the magnitude of the electric field at the location of the teste8(gyo dib d3yj (6,sj charge?

  A 5.0-C charge is 10 m from a small test charge. What is the 01br+*kmc*kxmrp*kf direction of the electric fielm*r+bkkk0f c m*rxp1* d?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o krh1ezdb 3mv44vt1:wf the force experienced by a 1.0 nC charge placed at the locatio3e bm :1dzkt1vwvr44hn of the test charge?

  Two point charges each have a value of 3.0 C and are s ,khu pcu ni s (0+:pv):ownt.ldg1c1xeparated by a distance of 4.0 m. What is the electric field at axp:1k nh 1 ,uc.dpu l +ci):0swgnt(ov point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charge c,v --: qlvdgj6 w3 b8w2/voilq2ucju is placed at the 50 cm mark. What is the electric field at theql2d-qiv8 jjcw-gl v c u,uob:v/2 63w 30 cm mark?

  A 5.0-mC charge is plhygi-9bo z/ q. phub:5aced 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 line joining th.9p bh zoq5g-:uby h/ie 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 = 0.20ioab6c/8ql 42qjut g* uxn0 r6 m. What is the magnitude of the electric field at the point midway between nx 06u/ua4i6jctob2l*r8g qq them?

  Three 3.0 mC charges are at the three corners .u+0p/dz) bifan st3 myo)*bdof a square of side 0.50 m. The last corner is occupied by a -3.0 mC chn)bsd. do+0pm3*yf ai) utb/zarge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are place3xm,law.w s(k kf sh21d at the corners of thaw lm2sx.s(w1f, 3kkhe 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 center?

  A force of 10 N acts on a charge of 5.0 mC when it is gwn+ l9 t ll ny0ahd*8.2bcgr-placed in a uniform electric field. What is the magnicr ld t8nnlgy bhl+.2 9g-w*0atude of this electric field?

  A particle with a charge of 4.0 mC hawnyp/922 fl4( uxpm o-pxt4mh s 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 itr 3o 6o8; .wtdyovv4xn an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be6xot;83ovr. y twd vo4 suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placwn-c uf-(wr 6o*b/i fued inside a uniform electric field, and uwonrc* wu-i/6b -(f fis suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carrn3wxoe7uopp6qi *+3 i 3cel5 gies a charge of +2.0 mC. What is the magnitude of the eleo3xi3p uli e5 6+7 eopwng*c3qctric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. nd-jx,l j2;y r What is the electric field 6.0 cm from the center ofylr-;d2,x jjn the sphere?