State the law of conservation of electric charghu.)l1jb,2s2uvdxs * c-h aahe.

  Is it possible for two negative charges to attrm6wsz4 h(0 k8a2um dobact each other?

  Is it possible for a positive and a negative chargeebjg/ 3q/ ,oxmsl86ye to attract each other?

  A glass rod is rubbed with a piece of silk. During the proc4)r6z85 z xdrfl*tmj ness the glass rod acquires a positive charge and the sillrrt) m 4zd586j n*fzxk

  A proton carries a

  The model of the ato vvw c71++.r*ncx xjqbm shows a

  A neutral atom always v 1jgx+79n9xw ycp zh)has

  An atom has more electrons than prot1z kqs,s4x3eqwa7y p +ons. The atom is

  Materials in which the electrons are bound very ( wigv.0umga:tightly to the nuclei are referrmvu0 g.g(wi :aed to as

  Materials in which the electrons are bound very loosely to the nuclei ann)9yyg.oy hnwv,*h* w w)0ggs.pk w6ad can move about freely within the material are ref*w gv)o.h)gk*ya0 h.nyn g p w,6ys9wwerred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. 3bak*4 : pdx oe+7)f,g wmqrfwThe end of the metal bar farthest from the charged rod wilx o ) 3bq+:e,gw*fdkaw7 fp4rml be charged

  Sphere A carries a net positive charge, and sphere B i.uaf,oml;( x cs neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is u,lm fc(o;ax.correct?

  How can a negatively char-gw. bi6n .i7ml iebv9aru4k; ged rod charge an electroscope positively?

  An originally neutral electrosco7ft:srz juw. 5pe is briefly touched with a positively charged glass rod. :s57w.fj rutz The electroscope

  An originally neutral elec2 oz5c4 7ax)5zxg njm sja;na fagh.4)troscope is grounded briefly while a positively charged glass rod is held near it. After the glass j 4h jax5)onza7;f2xcggnaam .z )5s4 rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the lea r 69mkokkl9v9ves separate. Then a negative objeckklk9o69rv m9 t is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on aus+:d- 25kylg vr:w nln insulated table. A neutral metallic ball rolls s+svk :dgrul5w2 -y:l ntraight 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 object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constrf;(872qjx f(gozt-lteyw +i ant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargeip;zk4iux .k1 is larger in magnitude than the ikk1 4 xzi.p;usecond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near k ;;v1n)p c xb1q ad7g2t0dxc q7gh vb9wwck13each other on an insulated table. Which statement best describespcw;92tbh3g kc17qv ;x1d1qb7wdka c nx )g0v the electrostatic force between them?

  Two charged objects attract each other with a certain for xx+ywj.l+. fnfb3hrr+6o/qnce. If the charges on both objects are df .xx /63r rjqb++wfynh+ oln.oubled with no change in separation, the force between them

  Two charges are separated by a distance d and 9kh/s /;;+iqimb*t bwmc (j yiexert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what acitwj siqh9+mk/;yim/ b;( b*re the new mutual forces?

  Two charged objects attract each other with khvkgrj)ef,wy6 w z,py9* 70 ke8 ipp;a force F. What happens to the force between them if one charge is doubled, the other ch wefw0zkry8)ykv j ;i9p eg,p,*k7ph 6arge 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.j:pkfun t e2k( g.nv2z7hin w/.d7ey: What happens to the magnitude of the force on the proton if a second electron isin.7t7efy n:gukw.ve2 zpk2 :/j(dhn placed next to the first electron?

  An electron and a proton are separated by a distance of 1+l9sip8r qq 7st87dfe .0 m. What happens to the msster7+ 9p78l dq qfi8agnitude 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. dz.nm390e xm fWhat happens to the size of the force on the proton if the electron is moved 0.50 m0 .exz fmmdn93 closer to the proton?

  A point charge of +Q is placed at the center of a pgm2y)*nq: gjqn,yqs/e (vz*z(n1s usquare. When a second point charge of -Q is placed at one of the square's corners, it is observed that an g/jz,(e )* qmq2nqns:sg(p u ny*1vzy 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 the centroid of an equilateral triangle. iy r7umpe e2h+3npya9 7y13ro When a second charge of +Q is placed at one of the triang3n+9p e o1ai 7yur37erm2py hyle'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 vecu bqed)8.l3cws(j2 ai tor?

  At twice the distance from a point charge, the strength of the pt:9e- a 50aln.zjzj -:t xcjrelectric field

  Is it possible to have a zero electric field value between a negativesmve v9 u ot;a,tt8hupyrh *v7 c:876h and positive 7hv*y vsovtumt8,t ;86 hcp 9aeur:7h charge along the line joining the two charges?

  Is it possible to have a zero electric field value between two posfj)efv*uzgr9;g1 z /ql/ g v:jitive charges along ther*lzgj;j /) 9z vqvgf1g:/euf line joining the two charges?

  Electric field lines wm - ap z, rp,+g*fhnh7 bfu.v3ecg)k0near psitive point charges

  The electric field shown t5fflsxxu 256

  Can electric field lines intersect in free spa7a5- t)bz.qyo0el9ih 7j:jjem gl9ojce?

  A solid block of metal in electrostatic equilibrium is placed in a uniform 6lnr aak2 z4oik9b -l5electric field. Give a statement a2io n4lr6- 5zk lbk9aconcerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters awfn4qtdn p n9r(9p:* jre each given the same charge, the electric field (E) midway between the center and tw(4*np9dr:t pfn j9qnhe surface is

  A cubic block of aluminum iik7m3m ts(36mfs i/hrests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on tm 3i m7sitkhmsi/(6f3 he block's top surface?

  If a conductor is in electrostadj) tes 1as9+ttic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metalli2wm4;q1u eybu-dxb; zc sphere that is grounded. As compared to the qud;xez4m -;ybubw 21 case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in f9 e+ds:y4w t:4ikhjo static equilibrium.

State Gauss's law.

  The charge carried be+ o m57tv *q5yf*cxzey one electron 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 jy 9:)4uuy7wh* .mt lqul)g khprotons than electrons does this piece of plasy)y )gj:q u *7kwluhu9t4 ml.htic have?

  What is the charge on 1 kg5gm5gqy0 ie0b of protons?

  An atomic nucleus has a cha d88qamfyc*u c-* :.nsu2 tywkrge 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 and -4oqkgf2h75 s/ e.0 mC, respectively. Whaego5 /7sk2fqh t is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them i jyp 8xbbpbk+p4(z8 h,s 1.0 N. What is the magnitude o (pxjpyzkb p8b,hb4+8f the second charge?

  Two 1.0-C charges have a force between themfn alrj .cly5/ 0c-ojqq*lkc0+lr-;m of 1.0 N. How far apart are they?

  The force between a rq-em,+( . +x xvop)kxrf waq4$30 \; mC$ 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. + 4ip.*aqrqjq If they are moved to a new separation of 8.0 cm, what is taqr.i 4*qqj+ phe electric force between them?

  Three identical point charges of 2.0 mC are placed on t +pclr dlq,2e1a +n4. ;tlbqu:+qdqjyhe 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 q qp1q.e4+dql+ju d; :yt,r+2lbnlcamark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are q 3rgu26e bbv5q(p+t hplaced 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, and +4.0 mC at the 100 cm mark. What are th56p bqh2 v3b t(+ugrqee magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges ar-cjc dj cj50krol7* s(e 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 the force on the 3.00-mC cholcj 0-d7sc( jjr*5kcarge?

  A point charge of +Q is placed at the center of a square, and a second poir s.(xj)8gvovnt 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 cent xj)rv(sgvo8 .er 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,mt (w04e5os1jcpoji 7 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net fost14ijc(5pemo7w jo 0 rce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q25j3t3v fuqc, f = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction o3, c5tv3 fjqfuf the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are pl7s dq7qx,2zv gaced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charge 7dvxqsz2,q 7gs?

  Consider point charges of +Q and +4Q, which are separylvy6li -8hg*0 w2 bxdated 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 electrostatic force acting on iixvhyg 0lyd8 2lwb-*6t would be zero?

  A +3.0-C charge is at the ori3l 1j ca3 ip*-j g*e:ed1 hannt8i zyw:+dv8rsgin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be pla-8jn j *dizhvc eiw+ea8* ::nad311glpst3yrced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. ht4uy5hqkb 38Where can a third positive charge +q be placed so that the force on it isybq k u5h43t8h zero?

  A copper penny has a mass of 3.0 g. A,+fk /nr*i qju: qv8ov 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 against the forcet *ebbpz + (x)f wyzg4wqkh282 of gravity by the attraction of a fixed proton some distance above it. How far ab2fhgz 2ezw( yt)xw8b pq+k4 *bove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductinga y9pyb2q2l 4f cec b 7g09buizk.+-cz threads which are 30 cm long. Both are given identical9 bic7y lcb 2+.9zczy- u0b4pak2eqf g 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 a charge of +40e. What is the magnitudb;o:.wktgv ; w krp3mkl06b) gqb8dw9 e of the electric field at a distance of 1.0 m from the nucleus 6g :ptr;bk0bkbwm q w.8dv93ko;g)wl?

  What are the magnitude and direct dthujb4shqg+(;jz 99y 8i z3yion of the electric field at a distance of 1.50 m from a 50.0-nC chargd9h4zyj 9u; +ti yg hzj8qsb3(e?

  A 5.0-C charge is 10 m from a small test charge. Whaady *h nj, m83rb/-v*oig(yant is the magnitude of the electric field / anbyayijvrn-h(,g8d*3*om at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Wha z1 4rhii6ahb;t is the direction of the eleh41ir6 hz abi;ctric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude otxr + :ydx 6za,j3;;eox n42eu uaev(a7zu +bef the force experienced by a 1.0 nC charge placed at the location of the test charg:;v6 z,t ;u73ex 4eyenx+bdazrx auu a(2ej+oe?

  Two point charges each have a vuj9)fe ))wx5tq9 bac3 oud 2ybalue of 3.0 C and are separated by a distance of 4.0 m. Whabd325cuatfo)w9 b exu9)jy)q t is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter st1 c:pauyau 8i4vhu1m9ick and a -4.0 mC charge is placed at the 50 cm mark. What is the electriyu1u 8hcp4vaiua: 91 mc field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark oftm(3enj+6t r g,*ih ot a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on r h*enm g titt(oj6+3,a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7h4gcz: ch ;a*d.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric c:gd4a *zch;h field at the point midway between them?

  Three 3.0 mC charges are at the rp*3zzm-1sg8vta) /rn*eks9 wx/arf three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find thr*fz 1te nrr ag)pxwks3-//z* vs ma89e electric field at the center of the square.

  Consider a square which is 1.0 m on a side v tr5+wmj/f-ly*ioe1*8 vl4wh s* heg. Charges are placed at 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). Wi w5lej*/ - w1v evrm4lg*fht+o8sy*hhat 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 placed in a uniform elect mog+p9l g7h3+ vssy6zric field. What is the magnitude of this electric fiels mgg z+67vly+ os3hp9d?

  A particle with a charge of 4.0ugj i3sjf 2w(0 mC has 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 in an electric field of 6000 N/C poeg/ua r vc cb3ibk9(f q38rr (+1yeah(inting downward. Whaek/y(+reg r93 (ufv3arcicb(b1hqa8t charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC.,pw; xx6z, xhn The ball is placed inside a uniforh;xx, nw,z6xpm electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of 7t jcz;80 xd;cof8m2blhuac36b lzy8+2.0 mC. What is the magnitude of the electric field 5.bzc7tbdfh8z 6c a xjuc28;; l3l08ymo0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3m( q4p rvg ib:ogxyz5,uo* o-).0 mC. What is the electric field 6.0 cm from the cq-xubyg*)omg ( p,ovz: ro5i4enter of the sphere?