State the law of conservat ptygz;x/ ,n+:b)oqanion of electric charge.

  Is it possible for two negative ph /cm*qvtfkp 4bd;v f-8n*o* charges to attract each other?

  Is it possible for a positive and a nega 7fmxq/f);6kei wk m0ctive charge to attract each other?

  A glass rod is rubbed with a piece of silk. Durin i4f8 5b(h* (ogf:t(ujtrqwdng the process the glass rod acqjdb((ftt(gnuq84oh:* 5wfi ruires a positive charge and the silk

  A proton carries a

  The model of the atom shows rb31a fvq7c2tim,f: ca

  A neutral atom always zfi26 6awj9 ut(lz;z xhas

  An atom has more electrons than protl pqp22a aq*2r/ ss.tqz4bws*ons. The atom is

  Materials in which the electrons are (v.oywnc,n7 (xgm+tknuhp8g xlb b6u26 ( mx*bound very tightly to the nuclei are referred (8(h,vmylx6n u*w. upob txb +cmn2gg7(nkx 6 to as

  Materials in which the electrons are bound very loosely xn)i4 ubdy3*yjf 5iu,to the nuclei and can move about freely within the material ar, xu)i nfj53y4*udby ie referred to as

  A negatively charged rod is brought near one end of an *zbmno5ro0(o g(oxg; ab (sl3uncharged metal bar. The end of the metal bar farthest from th5 brlo*mgz((x(o 3;obsogna0 e charged rod will be charged

  Sphere A carries a net positive charge, a)f7 igyh6l6l nnd sphere B is neutral. They are placed near each7nlif6 6h )ylg other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrosc675ujjdc q-s*oolc* y ope positively?

  An originally neutral electroscope is briefly pi* . jxrq5ok(q3z2rttouched with a positively charged glass rod. The electrozj *(q krtrqo2 i3.xp5scope

  An originally neutral elerip/ (: gmw3g(kjzk8b/ csnj3, kfh,et.a c5octroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the w/. 8i5k pneg/ 3(rc3,sajhjzf b:ok,(mkg tc electroscope

  A positive object touches a neutral electroscope, and the leav wfxx7qo:n5t+ es separate. Then a negative object is brought near the electroscope, but does not touofxtx5q 7n w+:ch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neup q9lz xrckh.09 5c:m7n ;zfc9tn 6hdltral 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 doeszdl57mz9q 9prtc; c9kfh:0x.lc n n6h either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of a z ;ga2-gcujs+www9-the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge iu)+jgf1gebjr vm(rq1a 8t14 ns larger in magnitude thma1gn)bjr(18fvuj14e r qt+g an the second charge.

  Sphere A carries a net charge and sphere B is nas.cfb;v-i;0yaj 4dyeutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic f0bdi;-;v j afacyys4 .orce between them?

  Two charged objects attract each other witye61t 2eptrc. 27iucxyx )7t bh a certain force. If the charges on both objects are doubled with no change in separatioipu yc22t ext.yb6 x71)r7 cetn, the force between them

  Two charges are separated by a dis),ldtu jo/5 abfr u2z0tance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d//0 br,uf25 ou)tj dazl3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to thzadmp evuj4s6 ,+:* t2(uxybhe force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its originae *uyzh +udxbp,:(t jmv2a46sl value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happeng0aqtyi00(h zn67 eh4gd.uw(z z -xres to the maggt6.e gyzwen (airqxu z0 zd7h 4-00(hnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance n+ds8y ckn0,cdt mr85of 1.0 m. What happens to the magnitude of the force on the fy+dscn,r tk8mnc85d 0irst electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.r2zdnr kf 9f//gr .bb,0 m. What happens to the size of the force on the proton if the ele /9.fbr r,gkzfb2 n/drctron is moved 0.50 m closer to the proton?

  A point charge of +Q is placedi mnnn2*4hw9yz3a/p g at the center of a square. When a second point charge of -Q mywa32/ nizn9n*hpg 4 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 the square?

  A point charge of +Q is placed at the centroid of an e; qnssdup.+efy//r k .quilateral triangle. 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 +ds p.. u/rkn/q;+y sefQ placed at one of the other vertices?

  Which of the following is not a vector?*xmnlzek( 8 -x

  At twice the distance from a point chakb ofq5p-3 mm40+g zbgrge, the strength of the electric field

  Is it possible to have a zero electric field value be5,4l yh lw.f2n6wo s)yq nojn1l x p-3yu5dii7tween a negative and positive charge along the ulojxy f-4ww2)yi1p7 n, o3l6dsq.il5n5h ny line joining the two charges?

  Is it possible to have a zero electric field value between two positive char82*yj 3xdoirkq3b0c.ln8gk i ges along the line joining thndiqil8x3j 8bkc* o3 y.rk0g2e two charges?

  Electric field lines near psitive point charg-zg6ied(pz ksco) w2.es

  The electric field shownr8ybzdo+sd nsz2p ze3;/7yr,

  Can electric field lines intersect in free spacekf 4fwy m/(/pvmsm riz59.*qv?

  A solid block of metal in electrostatic equilibrium is pla(w gp4j up +m2qzo1-pxced in a uniform electric field. Give a statement concern pgozjp m wxp1+42q-(uing the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere kw4m04 n ,,pbnprnza0 of equal diameters are each given the same charge, the electric field (E) midwa npzmw,pk 00,4nn4 bary between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wherd o yg4w94em9ae a uniform electric field is directed stramawo9gdy e 944ight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium ne,f d ed 4c q44nwha9o02djph7yar an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that io.cqu (9y .b.vcts.l )i(c anus grounded. As compared to the case without the hollow.b(ailso9 .. u cyqutc.ncv() sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium7m/ch,ceqzogh5mj- - .

State Gauss's law.

  The charge carried by g2wf.byf,wu /b;j 82o9vls quone 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 mq44l5o:s f r/ngf-os,aiu-ygC. How many more protons than electrons does this piece of pla lq,5 n- 4/oo giaffgr4-y:ssustic have?

  What is the charge on 1 kg of protov8 g sye/rp. iyr- gqnqt(f,-)ns?

  An atomic nucleus has ab ,n51 o)i ny.pe* 2fp2vdplnl charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatojmm2 s3iat;qe df/d) 5ud67ked by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between theqft/u3a;m k)dj 6 msdde5 2i7om?

  A 1.0-C charge is 15 m from a second charge, and the fq+ x ih8up3sn6x p .yfm8r( tpo+8w/cuorce between them is 1.0 N. Whax+o tfirm . u638hpnq(p/ ws ycux88+pt is the magnitude of the second charge?

  Two 1.0-C charges have a fo; vgk.s x zvac9(l5is0rce between them of 1.0 N. How far apart are they?

  The force between a gy5w 5cm4nuza79. e uk$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm9b.kijy(t s na6h0s04oohrq 4j(m tg) apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, whaokja(smy(6jtb )is.n g0tqorhh 4940 t is the electric force between them?

  Three identical point charges ,-w,4dqz2h2m b 0yt*)q7 wevf 7aiu hqkg nsh6of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, ahqnv weud,0 7qhf hmi2 zgkt- s,26a)wb7 4*yqnd 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 origin?

  Three point charges are placed on the x-a/j2e04hmt+ yb vn *hxfxis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm,nft*0h jy2hv +m /xe4b and +4.0 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 uaz 1 km /zw1shxf1ya717m.+cz - goiathe 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 ao1zkma w 71 m a.s y-1x/iz+1zh7cguf3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point chan cvl 9szz7pc,y+ 9 c.od/oxu*rge 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 the7slu/ *dc.cocon9vy ,+zz 9xp 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);mjrn5 8gq g5yho3g.+jvzr p8)ao8ay3 Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net fog+)8aj vnr 8yhz5q5o3ojgaym8r p3. grce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30+q5yg,e2v:u)3fubwzgk+l gf z2wq4iyxqp6 , m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of t+ qv6gq4g q3 ki guz2l,pfxzy+,bwef2 yw5u:)he net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed* /mbz:cx8ut u,uu8wr at the vertices of an equilateral triangle which measures 30 cm on a side. What is the rz:8wuuc 8u,utmx*/bmagnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separateagdf+u(:p r us-uce-j+r4 t jg1*m )uqd 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-+e gf+ :rr*ta m(s4uqu d1pu)c-jgju force acting on it would be zero?

  A +3.0-C charge is at the origin and a kb1qjr(d0kd; oi4tv)s jkm. *+9.0-C charge is at x = 4.0 m. Where on the x-axiqk*tso1m.dr(vd jk4 ;jb k0) is can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is pu+declix5(4i y d)p a1/koj d5laced at x = 2a. Where can a third positive 4d/ ad 5o jupk1ilex)(+d5icycharge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A g5: uwwnem7k5/ofh s :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 /h0f l9o)uu fh 9jry8oagainst the force of gravity by the attraction of a fixed proton some distff 9j0u8yhuo9)o/ rh lance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hungx0,vi4mdvskjz+ezs ; *hm 6i:3ix2ddtn e. .z from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and thi :idmx;zzvti6.sddjvn, x03 s mhek+e 2z.*4e 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 charvi69j2urd l2( thak.i ge of +40e. What is the magnitude of the electric field at a distance of k t6uvh(id2arj2.9l i1.0 m from the nucleus?

  What are the magnitude and direction of the elxu7q 9twgtz ln*:o2m,)v pqtoh7,ck +ectric field at a distance of 1.50 p,q2lt n)7txgct7o,m9wu*o vkh: +q zm from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge bnd 9(puv/l0 )hhj,kq. What is the magnitude of the electric field at the location of the tes ,h(uhlk)v9bq/d pn 0jt charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direc/p0/toiyr4, ) 5ngfmt4rggl e tion of the el45f)gr,t m/r4g/ pte og0yinlectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnixdu+7j w:6;gwgbd c*4qv ms6 itude of the force experienced by a sv6j4d g xcbdwgwmq6:*;+ui71.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of o .ziu14g ltbh,3v4ke3.0 C and are separated by a distance of 4.0 m. What is the electrbuko1gv.,h ei tl443 zic field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark r: xqjmx*yap7jwr; saa*a(,8 of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric(: 7aj wr*, aaqx*a p;rxm8jys field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter spw4kl kjt4d ;es /)2qotick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining tl /edk 44) o2jpk;sqtwhe 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 vw 2v**x5o,a:rtx:x w9g gkxz = 0.20 m. What kv :,a5x 9x2ww:t *ogzrx* xgvis the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners qpuj-xf,so1. of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center fsqj,p.-1 x uoof the square.

  Consider a square which is 1.0 m on a side. Charges are placed at/iv pn)f7tq*c 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/q) i7npvt* fc); -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 chag.hn+ 8c 0p ogm+xmw4lrge of 5.0 mC when it is placed in a uniform electric field. Whatg8wc.4 gxm+hpn mol+0 is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass .9mwf*ezb 5qsof $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g vdah l97,njipx/2 rc8is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended8di,pahn 7r9cj/v 2lx ?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The bal 5 p:xzdf9x*d94gkrp ul is placed inside agz: fdkp*9xu pr549x d uniform 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 +2.0 mC. Wha o ld5sw5wt,;wt is the magnitude of the electric field 5.0 w5 w,dtlo;w5scm from the sphere's surface?

  A metal sphere of radee+2((j7 (xb/ahet8ucg ab dtius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sph+at(8ec b(huj(b 2/ge axtde7ere?