State the law of conservation of electric crfmsty5p* p,9 harge.

  Is it possible for two negative charges to attract zy5 4e2v)vep1herwk 6each other?

  Is it possible for a pkegl-m a5 6n r*6:hdbaositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During th 8j9v c8:qzm7)gr0mmqfbn1tq e process the glass rod acquires a posit t mnjcg0vfz ) 19mq8:8rm7qbqive charge and the silk

  A proton carries a

  The model of the atom a1+kbe o-.eljshows a

  A neutral atom always+wy5e;6tmc db(1 lt/q xa :pre has

  An atom has more electrons thaedk7u81ao:c+gket : nn protons. The atom is

  Materials in which the electrons are bound very tightly to the nuc blig,w*d6 fsp/* 3lq5zxggv, lei are referred /gxb*wzdgpfq v lg,i53*,6 lsto as

  Materials in which the electrons are bound very loosely to the nuclei and can m4 5g t5sssrqgze38h jy2q- cm8ox..kdove about freely within tho38j542 g sgq5x-. mkyh.zess t8rdcqe material are referred to as

  A negatively charged rod is brough3+j ;twgs,x :mamo9k9r7i w(n9qk; dobtv 0sct near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod t:xo(+mck9k ;r 979o;g v3a b0sintdqw sm,jwwill be charged

  Sphere A carries a net positive ch/8s 5qf*t qzb6t.jdmvarge, 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 grounded. Which statement is correct*d.b8jzs m qtqtvf/65?

  How can a negatively co5adfa -pdsfu1eqj n5 p+0a7 9m9h0mlharged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with owmo;c2hhmuz;-2q3 k a positively charged glass rodq;u kc22o w;zo hm-hm3. The electroscope

  An originally neutral electroscdhr qr-krwu3 76.he apkjh:/5ope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electroscoph/ -hwk3aku7 rj6 q pd:r.5hree

  A positive object touches a neutr1)v rsf x8yi9dal electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens 891x)if dyr svto the leaves?

  A large negatively ch /0o3wuho;df-xxa1r( kj b: cbarged 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 rolls along the path followed by the first ball, strikes the first ball, and stops. The first ball rolls forw -1d; :ob3ofarc 0(k xjbw/huxard, 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 const6 a(+uu1qs zqhant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a disteueki.86imk3vh 4yc kg *1-zqrh cn15ance d. The first charge is larger in magnitude than the second charge.e 5 znim16yuvkk8 q.-e h*cg31hric k4

  Sphere A carries a net charge and spher.yo*qqyj8c e9 e B is neutral. They are placed near each other on an insulated table. Which statement besy* qc9y.8jeqot describes the electrostatic force between them?

  Two charged objects attract eac5 w) qve v87rypg* (5uf) vwalap+6pvkh other with a certain force. If the charges on both objects are doubled with *)kw+q p5)v(pavvuwp6yfe5g vr l7a8 no change in separation, the force between them

  Two charges are separated by a distance d andouh9oq9-dt1j yfu 8 1k exert mutual attractive forces of F on each other. If the charges are separau1ohk 89j-udft1yqo 9ted by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with f8vruu+8 vv +ea force F. What happens to the force between them if one charge is doubledef+8v8 uvv ur+, 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 proton are separated bynf1boofzbgtf: ho/ogl0 w3v( 0tf )5. a distance of 1.0 m. What happens to the magnitude of the force on the pr.(zt0 1lv5o3ho tfgoof0: wbfgbnf)/oton if a second electron is placed next to the first electron?

  An electron and a prf1uhg1jh /mldl3j 0doa3:d0 zoton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the f:lua0 d0j1l3hdjd13f o/ g zhmirst electron if a second electron is placed next to the proton?

  An electron and a proton are separated 1s e;9 jlfuyq pw((0e-j1qenkby a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closw911; u(yk qnplfqe0 -(sjejeer to the proton?

  A point charge of +Q is placed at the center of a square. Wsd2s4dcrl 7-rb0uv+ sgxcyw9f7 8l2 chen 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 th bu ysdc- d78rcr7vc 0f9ls+w4xg2ls2e square?

  A point charge of +Qztpr-p3o o1r9g wlg++ is placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0pglgzr 9+ ow+ptor -13 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 no/w;,tpx :kiq,jut 6sf t a vector?

  At twice the distance from 0yo u8w*)v 4-a wfsvsxa point charge, the strength of the electric field

  Is it possible to have a zero electric field value u2,2 wa xgkenv4gq,ej:;ua a+between a negative and positive charge along twn g,aekaqvg, e;2 4j+ux:a2uhe line joining the two charges?

  Is it possible to have a zero electric field value betwee5cwldxcp2-8 n; u ei1,gm+ yepn two positive charges along the,5epiu -8 gmcpxy+e;wn1 c2dl line joining the two charges?

  Electric field lines nl cwo07z2eja j *afk69ear psitive point charges

  The electric field s tn2w uag*4bs.hown

  Can electric field lines intersect in free spacee pyt35k3*le b e8z+lfo 1jot6?

  A solid block of metal iiokbw4:2 wt;9 5e qbfan electrostatic equilibrium is placed in a uniform electric field.iwt4o5 a9q;kf2:eb w b Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equ5sba hmn :w,3vwd vi21al diameters are each given the same charge, the electric s w2:v5dhmi3a,bvw1 nfield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unf3yhfll h r/ 4j*ul (ei;9fyq(iform electric field is directed straight upward. What can be said concerning the charge on the bloh4q3jl9; re i/(f( ull*hfyyf ck's top surface?

  If a conductor is in electrostatic equilibrium near anji i+d+vwh/z.w5ov nd 0:;m aq electric charge

  A positive point charge is enyw asd d*fz(83closed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow spherd(z a3f*ysw8 de has

State three properties of conductors in static equilibrizmujc u 3is2 im9-8-noum.

State Gauss's law.

  The charge carried by one electron 1nk d 69xc/cqz0t)nd sis $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2.009 eye0t)mcy k/p-w au/ mC. How many more protons than electrons does this piece of pl p cyuk 0e/te)amy-9w/astic have?

  What is the charge on 1 kg of prbqb 3tn.tou0vq , i+55g3webbotons?

  An atomic nucleus has4)8 8 ,+dvm wdtqirxbkj 0lu(y(* qrwy 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 and -4.0 mC, r*dqo)nr 2 kki;espectively. What is the magnitude of the electric force q2rkk;dno* i) between them?

  A 1.0-C charge is 15 m from a second charge, and the forc8e7gjbk0iy f3j.aofp /f5 5mw e between them is 1.0 N. b g jfa iopemkj7/55 f8fyw.30What is the magnitude of the second charge?

  Two 1.0-C charges have a fori,0yq; ywj ty( ./ bfw.qofg*bce between them of 1.0 N. How far apart are they?

  The force between a maxq(1p:x v./ +prerz $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apartq 4c( ryypch m/du/:aivq8-ze)t h5 b8, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric fop/ 45d:te )8bymcaiqryuh 8/ vh- cq(zrce between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chve42lvn y(u; n)yo50jeyv : bpvx+ou,arge 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 charge at the origi: ;voj (xolnueyy0e+nu,)vyb p2v54 vn?

  Three point charges are placed on the x-axis. A charge oc i;*9hp 5o3kqqn/no2uz g jl+f +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 100noo+*ilgu/3;2qq hj p95nkcz cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located4ijy6 vrms v/0;h9gmv 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 on9 hs;riv/vvyj0gmm6 4 the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point x6*fmc+c/ngj s; ss :echarge 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.+ cgf* mxnc;es/ss6:j 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 = -u 0(qiq5/qvgimwl*1j;ky2 sn1.0 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 5.0 ;2 l sw0imyqq i5nuk/gv(q1*jnC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); x0 m8eri+ne+lwp:m h+ Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). l+e:h i me w0+n+mxp8r What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed ats :ol:,bm oc-v the vertices of an equilateral triangle -,:m:ovboscl 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 bm7i,: bifs1ldy 3.0 m. At what point, on a line between the two charges, would it be possible to place a chargel 1bisd7f,im: 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 at x = 4.0 m. Where on.fq;m 5l -lrpi-a2be r the x-axis can a third charge be placed so the n 5rm-f.i2pale;- rlbqet force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2yj g(vs: x8yiv 5 5k,)ilwbtx,a. Where can a third posit)vxtvj bw,:ylyi ix 5kg(,8 5sive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A to 1rn x6:i3zzzstal 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 attracw3aj vx vf1epy ,3i(1rtion of a fixed proton some distance above it. How far ay1,fevxa pw vr3j3i1(bove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point kz6m)4p ap*bf by nonconducting threads which are 30 cm long. Both are given identical chmp)bk6p4z *fa arges, 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 magnitude of thefii2g ;ikt lh. w.+5ye4b5+ z7z;ax senwx 9lr electric field at a distance of 1.0 m from the nucleu g.lriyh5iz e nst;i5xf+akelx 4wb+2.7zw9 ;s?

  What are the magnitude and direction of the electric field at a distance of 1.7-tsh2 eg* 6; mbipl ic2o4ls)fw ux1e50 m from a 50.0-nC 2ti7o p efmxug-l6slb;*w4e2chs) 1icharge?

  A 5.0-C charge is 10 m fr sr;lwynleh3;en71i abu8p( 6om a small test charge. What is the magnitude of the electric field at the location of the test ch6hn ;lialuy1b87w p(n3e r;esarge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction o yj h4ywi y57ck48 ;fxmf,jwb1f the electri cx4;84fy5yy wki7 jj1f wmhb,c field?

  A 5.0-C charge is 10 m from vg :tn u9,uiuf9 1lr0ka small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placekn91: rvful 9 iuu0tg,d at the location of the test charge?

  Two point charges each have a va.7la ydei0c .llue of 3.0 C and are separated by a distance of 4.0 m. What is thede.y.7 lc0 ila electric field at a point midway between the two charges?

  A 5.0-mC charge is plasvy -/;g+jft p scj* 1es.-qcqced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm gfy*-jq vss 1.sct jp/ q-;c+emark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at thqx dh8qgrpip+z9 am-4 hq* a)7e 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 joinm 7qr8z hp* aaigqxpq4h+9d)-ing the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placedvg 993pjib:b b at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betwej i9gvp 9bb3b:en them?

  Three 3.0 mC charges are at the t95j uo)*cssm;6dcyku hree corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC chscj ;y *d o)9u56csmukarge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at2kmd2a.b xtqekc75 13bng76k prv* kl 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). 7v2.pdxn7l5r b*32egtkcbm6akk1qk 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 placed in a uniform electr fnb5u28ebiym:g2p6wxf 1y fc/s,c k6ic field. What is the magnitudek5u /, 6 ibyf ffx1c cpem6:w2nyb2s8g of this electric field?

  A particle with a charge of 4.0 mC has a e*p,k 2zgh)fm 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 elecz 8w tx0:1tw8j+r fuxxtric field of 6000 N/C pointing downward. What charge must be plfwu8 80:rj wtxzxxt+ 1aced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carriemihhb f04 m11ys a 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 magnihyfmihb 1014m tude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What wl i t 9c0s5oge8j0ou6is the magnitude of the electric field 5.0 cm from0e65wgl o9 jtuocsi 08 the sphere's surface?

  A metal sphere of radius 2.0 cmu u(hgg*i4h3 (rvy2 hy7ebz uez6+ 2ou carries a charge of 3.0 mC. What is the electric f2y3 bui(vgzoy*64 gz7er+ u (huhhue2ield 6.0 cm from the center of the sphere?