State the law of conservation of electric charg )p.hpbt( 7v/jnry b5ue.

  Is it possible for two negative charges tpcftepf-xc28lmi u5c*0*2q s* 1od kdo attract each other?

  Is it possible for a positive and a negative charge to attract each o7y-iz3sn5bx c ogk1a*ther?

  A glass rod is rubbed with a piece of silk. pm..0plxtg:hz: l* o nl3:r p,hl9x arDuring the process the glass rod acquires a positil,hhtmx0zlp:xo:r.. 9a3l :nrpg*p l ve charge and the silk

  A proton carries a

  The model of the atojtvf cfm*hq)n/*6q .rhw7cu3 m shows a

  A neutral atom always hai 2,(-d:uutdgi8 qslas

  An atom has more electrons th0ny -(i ye/r k4qckl5fb6 lzv0an protons. The atom is

  Materials in which the electrons are bound very tightly to thef5z5bwp h9 6y6q a0zzv nuclei are referred tov5q6 hzyw 90zza 6bpf5 as

  Materials in which the electrons are bound very loosely to the nuclei and can xxqfue (j(1t4 move about freely withit1(4u ( qfjxexn the material are referred to as

  A negatively charged rod is brought nd r.ip,xzz 6b*n d6r;eear one end of an uncharged metal bar. The end of the metal bar farthes6 d*z;p,r6xnbei . rdzt from the charged rod will be charged

  Sphere A carries a net positive charge, ;wgo(s4 cdcy 5and sphere B is neutral. They are placed near each other on an insula4gwd(y 5;scco ted table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivelybem*:t s- ;nudag6 s+p?

  An originally neutral j-u4w ou g *v o41/m6yq+viokgelectroscope is briefly touched with a positively charged glass roko w+4/v 6*4jmigugoyvuq- 1od. The electroscope

  An originally neutral electroscope is grounded briefly w+ r(i2 tbl5qqphile a positively charged glass rod is held near it. After the glass rod islr2pqb 5q +t(i removed, the electroscope

  A positive object touches a ne n9h(effg6;b62gbc zo utral electroscope, and the leaves separate. Then a efzn9;o6ggc bh2 f6b (negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively chaj*g 2p(*g 8fpyxtmwb9rged 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 forward, but does not touch thepf2gtjym* p8x9 gb(*w 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 thvopt f) 3g+du75g*m1aany95 rblp3r me Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated byvi3nw 1lj 20oi a distance d. The first charge is larger in magnitude than t2 vlonw 03j1iihe second charge.

  Sphere A carries a net charge and sphere B is neutral. T v+j)p/qwndm9hey are placed near each other on an in+nv) p9/mwjdq sulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargw5r xj)7eg y6des on both objects are doubled with no change injg7x ye)dw5r6 separation, the force between them

  Two charges are separated by a distance d and exv4buz7jz8yurh s*2n.ert mutual attractive forces of F on each other. If the chrv*uz 7 zn4u2s.b j8hyarges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a f0omr gov -5v::f tsz7worce F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance betwee5: ro7wvm vgs:t0f-zon 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)ax *w rr+hjz/.0 m. What happens to the magnitude of the for*h zjwa) rx/+rce 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 m. m7oyu)hvoi+ *g;9u pwnl.bo- What happens to the magnitude of the force on the first electron if a second electron isvp+9ob 7;.)unhlgomy*o iu w - placed next to the proton?

  An electron and a proton are se4*4wh;rp ,0ru,8hhj w pcq osuparated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is,* j4hurcw0o;w4qph surh 8p, moved 0.50 m closer to the proton?

  A point charge of +Q is placed at b./6zqqq mxej9xuaf gy.)2 m .the center of a square. When a second point charge of -Q is placed at one of the square's cx9mx/ q z bg2j.)qyqfu6e .m.aorners, 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 the centroid of an equilateral tr87 l)e su*vo,qmaar5k iangle. 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 +Q placed at one of a, av )usm8krlo7e*q 5the other vertices?

  Which of the following isj9xuo*/ ;i fde not a vector?

  At twice the distance from a point charge, the strength of the el6w2: mu(ebca nectric field

  Is it possible to have a zero electric field valuxmvywu l;f85 .e between a negative and positive charge along the line j u5m.;8yvwflx oining the two charges?

  Is it possible to have a zero electric field value between two positive ca43(u*m kpfq. ksj1 a2akk4smharges along the line joinink34k*a2mqak mak1.uj sf (4p sg the two charges?

  Electric field lines near ps vwgj0) 46 7vm9fekumod*i6hl a9 b5ydbrj95sitive point charges

  The electric field shopddb30c0*quo6l7i s ubi r94xqx: *ijgxg + m)wn

  Can electric field lineuj /0 kw+gsw 6k6j-niss intersect in free space?

  A solid block of metal in electrostatic equilibrium is place7mn5 o(d 4eqmxd in a uniform electric field. Give a statement concerning 4 (dqn7eo5mmx the electric field in the block's interior.

  If a solid metal sphere and a hollo1)ho4lo)u v z:r0cj cuw metal sphere of equal diameters are each given the same chargcuc)0 :) 1l 4roozjuvhe, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform exs g25mil /1xai.ftdl- 2x v4clectric field is directed straight upward. What ca laix-sv2g5f4l.mid c12xtx/ n be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric c8 a:vakua+t vh+s jc.y:)er l69jz4ra v dl80fharge

  A positive point charge is enc7rfr,lnl ond1u 7vp 30losed in a hollow metallic sphere that is grounded. As compared to the case withoutu pr,l0dv 7rn7nf3o1l the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors i:vkln8h 0qwh t/ur5: eo;gwhz )t,lk6 n static equilibrium.

State Gauss's law.

  The charge carried by one ec-44h1 d m+lwmhz 1k6*oz mko/wgbjaob2)pi9lectron 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 vtsnejip-pg *b:)x4,vb ce;yv0. sl*+2.00 mC. How many more protons than electlev*:g) b*c0n 4x;,v.p -ps y iebstvjrons does this piece of plastic have?

  What is the charge ont,q5i*4b kq4g;a c-tqu naj4pf)wma / 1 kg of protons?

  An atomic nucleus hare +6*na(e 34ozhiq5r ztq,wzs 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, hg)x3kocgp)90oi wi /save charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forcix0g)3/ so pcogwki) 9e between them?

  A 1.0-C charge is 15 m from a second 91qgqjd9t bsn(g r x(7charge, and the force between them is 1.0 N. What is the magnb1jds9rt7gng(9x q q( itude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apard2c7g naqg /z-mnfx24 n rlw-9t are they?

  The force between a 0no ye;lt o:1y)r7o sgqz2t8i $30 \; mC$ 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 ga+ g6b qf4p b55xl.iiforce. If they are moved to a new separation of 8.0 cm, what is the electric force bbb455paqg f.6+x iligetween them?

  Three identical point charges of 2.0 mz) cl*9y 3a +huyr.-nt)n uyznC 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 10*3hynz+y u9yrzcn ).)-nulat 0 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 thrm9x7 m zph750or.z-,plbztrll t (- ke 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 the magnitude and direction of the electrostatic force which acts oz0blmt hprrop,9 r llx tk.z-577m(-zn the charge at the origin?

  Three point charges are located at the following positioaalf0-6i 5p qfwkg b1x4 gz7b7ns: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mi1f6a 7- gk57pwf4zxl qgbab0C 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 placed at the cents6f5 q2t+ m4lyzfyk mwql.;7xer of a square, and a second point charge of -Q isy7mf; wms flz56x.2 lyq+ k4tq 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 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); Q3 = 5 )uxyj ,l8xb50udh-zu.0 nC is at (0, 0). What is the magnitude of the n8, hduub) jzx0ul y-x5et force 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); Q7+whmcuq la 583 = 5.0 nC is at (0, 0). What is th 7c5aqhwlum 8+e direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 i*nktl (apf 93mC are placed at the vertices of an equilateral triangle which measures 30 cm on a sidk(3t*lf pi9an e. 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 whatt (pn )+15mpyw 0t( 4fh8hvl1btahiut point, on a line between the two charges, would iy1pm (itn t(h)h85awb+tvp4 tl h01fut 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 at x = 4.0 m. Where o zbqav9w6b 5+odj(k5 nn the x-axis can a third charge be placed so the net for d6v+95 j(aznqobb 5wkce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x yb 48 d1t8yhhqrwt*x5= 2a. Where can a third positive charge +q be placed so that the force on it is ze8h t1 *ybd 85tx4hywrqro?

  A copper penny has a masss k7p5 j/ n6.buyp k/faln3ea4 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 against the/br+tv;b8uy l.: az cb force of gravity by the attraction of a fixed proy ;t+:zb.b8cvr lb/ua ton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal sphem*:d0sy+ kwmo res are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forc:+m* sdy kw0moes 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( ;nyww f8g3nxyqc63gh; b zt0 magnitude of the electric field at a distance of 1.0 m fb; yx0t6;(nhzqnw3g8 w3 cygfrom the nucleus?

  What are the magnitude and direction of the electric field at a distanc3xwir 94xw.mee of 1.50 m from a 50 wrim w3e94xx..0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the eg a e9 ld eh.jp-ty94ko.1f8ojlectric field at tol9jf9ad . oyep et4. hgkj-18he location of the test charge?

  A 5.0-C charge is 10 m from a small test chaxd l31o 8kh7zl. muhk-rge. What is the direction of the electricudll1oxh 7.k k3z hm8- field?

  A 5.0-C charge is 10 m from a small3y7j q: 0fat*ef4nlg l test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of f0qtf 74j:3enly* la gthe test charge?

  Two point charges each have a vp(zhx 3; -+c w)ti6g wlnq27friwg*udalue of 3.0 C and are separated by a distance of 4.0 m. Whaig l 2-(wdnfuw +r6x7)gzq; htpi3*cwt is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark j.rk8b beypw: 8 /. nrg2quwa(of a meter stick and a -4.0 mC charge is placed at 8 ew:np .rwkurb.(y8g2 b/jaqthe 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at ez9qg. 0;62pafpg jhgthe 0 cm mark of a meter stick and a -4.0 mC charge is placed at thp.h ;azgq 92g0pgefj6e 50 cm mark. At what point on 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 = 0.20he2du) h2z45 ky8pkpg m. What is the magnitude of the elpk ye )8h kdu5gph242zectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sidzq rxwx0lk,-.mkny8. e 0.50 m. The last corner is occupied by a -3.0 mC c8,xl.wx0mny zk. rq k-harge. 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 corners o-rrm7smppyrt 4 9f0w/f the square as follows: +49r4rp0myft 7p-srwm / .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 placed in a uniform n:8,ef*hbr,ou)wmgn electric field. What is the magnitude of this electric fbfuwroh *,n)n: g8 ,meield?

  A particle with a charge of 4.0 mC has a ma+ (li,eu7rsk0j:h vfk ss 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 elec xh:mr)vf 1ogtx2me, u46r+go tric field of 6000 N/C pointing downward. What charge must be placed on the ball for itgfmu41:xm x h+ tvre,6or) o2g to be suspended?

  A foam ball of mass 0.150 g carries a charge o(ej rn6m()egx y*b az:f -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of j(g *zenr:()yme6bx a gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries vc,ly8 vwcepo7 1+ 2r*qr p1aat2sf-xa charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm fromy2c t*7l1q ax- c a1ow+esr, vv8frpp2 the sphere's surface?

  A metal sphere of radius 2.0 cm carries a cha(i0 /uhx hlgr(9l,zy erge of 3.0 mC. What is the electric field 6.0 cm from the center of( ( eilz9ug0,lryx/hh the sphere?