State the law of conservatione 2swd6wigmrk qsc3k(+-2+j m of electric charge.

  Is it possible for two negative charges tqz*, 3qezx6t 2cp p(zto attract each other?

  Is it possible for a positijioh g 4ne9f49uq t23tve and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the g// wm3r7iy1qwg7r lh ij9vh8b lass rod acquires a p8j9lv y1wbiwh rh3m r7qg//7iositive charge and the silk

  A proton carries a

  The model of the atom showc rme lk*,t8x1s a

  A neutral atom always hay6gcudd+9bo82elq r 3s

  An atom has more electrons than protons. The dl n-gt0mxh9ap/44bj,ih a; vatom is

  Materials in which the electrons vs qmj4u* rfp:q60+ 8)jf rwzvare bound very tightly to the nuclei are referred46sq08v*)jr: v r uw+z qmjfpf to as

  Materials in which the electrons are ,vi6ivc:w, /l byew ems kj+0 (z.hi8vbound very loosely to the nuclei and can move about freely within lz0b .jyw+vc( i:6w, e imsev/,ih v8kthe material are referred to as

  A negatively charged rod is brought bn sq4s7y o9t-ad)dq9 near one end of an uncharged metal bar. The end of the metal bar farthest from the chargn)t aq4dsdb y99q7o-sed rod will be charged

  Sphere A carries a neqx - n b-4 7ug6w)dfoe)5rnrmvt positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire thfng)rnd-vuxo 4-b w6 5)7mq reat is grounded. Which statement is correct?

  How can a negatively char52 b.1 3kl 3qlymtryxtged rod charge an electroscope positively?

  An originally neutral electroscope is briefly /.pdn::hq*3dm uibn w touched with a positively charged glass rod. The electr:dmn :i3wh u/dnp.q*b oscope

  An originally neutral electroscope is grounded briefly while a positively cha.:o t77ejqhd h .w-wxsy er620;bipztrged glass rod is helx p;wodih.7bjesq:w7y h t20.et-zr 6d near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electrosc obm0mybo:2i-jx j7g oxd;loo;,lh2 +ope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. 72 b oj2: hylg;om+jo d lo;omxxi0b,-What happens to the leaves?

  A large negatively charged object is placed on an insulated table. pjq)koj0m uv6,a :z/d A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the paqoa, ) u/jvpd0j m:zk6th 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 o5jh 8g n3ubd)1h;rofb f the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. 8 fu2ksk.6klf0br ej9 The first charge is larger in 2 j .9uf8 6erblkskkf0magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. T o/hf daxcog8j /,0ev5hey are placed near each other on an insulated table. Which aoe8d/,0 vjhoc g5fx/ statement best describes the electrostatic force between them?

  Two charged objects attract each othtp(f 70,1 /pxw8gwhd1ip8;k iuzzqit+lyo1jer with a certain force. If the charges on both obkwtd(if81,igi/zp1 qz 1+ xlopj8;whtu p07yjects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d a wn0aw ((rf(wt;t wc-pnd exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what arefwtw;w(-tc r ((0apwn the new mutual forces?

  Two charged objects attract each other with a force F. What ha4z 18imsem5vrok9rg8 ppens 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-fourth its m58mi v g1 s9eo8rr4kzoriginal value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 mol)e8jv2i- r*wm,l :ol(utr m. What happens to the)vml :jw *tu,lmro 82irlo- e( magnitude 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 di+5qoi0q:otp estance of 1.0 m. What happens to the magnitude of the force on the first electron if a secono5p+q0iq:ot e d electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.6kdc4vs 8p bu8)fcs yp :x1zb(0 m. What happens to the pb6u(8kxc8 fzs 4vpb1s )c:d ysize of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Whenij mozk9i81n uvg,o*2rop;0qr.d-tg 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 igt-q zr,dgiom9o ;0jp k.1 2nruo*iv8s 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 equilatq*8ccqob+z bck9xli(7s+( jv eral triangle. When a second charx87bc(+ ozv*j c9+ sk(cb lqiqge 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 following is not a vect )7mv0gc)h .qnz lqii9or?

  At twice the distance from a point charge, the strength of the electric fi*oo +ki q.k(onuwp)k )eld

  Is it possible to have a zero electric field value between a negative and pox6c+ xgyq /;x4iqyka /u+h /bv9f4ueysitive charge along the line joyx h6+gu vk4ayxyiq/b/ ueq 94+/xfc ;ining the two charges?

  Is it possible to have a zero electric field value between two positive chargep2gw9 rc nzjj6 :q93axs along the line joining the two chxa36p2rn z :wgj q9j9carges?

  Electric field lines near psitive poin*bbu-7et vd;xt charges

  The electric field shown *fqv 8qoapsn:q 1g7g7

  Can electric field lines inters dw2+o0aspq d8f.5 k82/oydtadox s; fect in free space?

  A solid block of metal in electrostatic equilibriumehj;+m ejid3 xb/1v7s is placed in a uniform electric field. Give a statement con 3i; 1dbjexsvh+e j/7mcerning the electric field in the block's interior.

  If a solid metal sphere and a hol*d 2rui cns92:hc uqwdfuc0) -low metal sphere of equal diameters are each givenccc u:duq-0hsf29d2w*iurn ) the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woos 2*r/xc1lg4b fxur1w 0u9z reden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the blo1u9r zl0s x2cu/br1 fr4*xwgeck's top surface?

  If a conductor is in electrostatic equilibrium near an electric f3fo/frn 8) afcharge

  A positive point charge is enclosed in a hollow metallic sphere that is grou;7exb hz-rm: snded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow spx;hzm: e7b -rshere has

State three properties of conductors in 1oshj:b cw(9xg)8 z qgstatic equilibrium.

State Gauss's law.

  The charge carried by one)s(t: 03es0ns-wciea6 sg70y g fsant 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 chargedqmmg6 q10,m8mm7 )vka1un ozv-7p dd of +2.00 mC. How many more protons than electrons does this piece of plastic ha 8)m1mqmz1d kvdmqva n,6m upg70o-d 7ve?

  What is the charge on 1 kg oj+k9i-kn7qa sp,s5 hy 8xt3 lff protons?

  An atomic nucleus has a charge i)j8 d*qih6j gof $+40e$. 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 88pr r)xym- nm++/agje ,r gblcharge values of 2.0 and -4.0 mC, res-gre+rbx /al mjr8n, m8)y+p gpectively. What 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 isf . rx:lrz4r4j 1.0 N. What is the m:lrrz xf .jr44agnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart ;cexubk1h5li10q +vi are they?

  The force between a b) whsin0wv7-w;qfb ) $30 \; mC$ 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 foj 2ze9k*0 fovtj dw9o.rce. If they are moved to a new separation of 8.0 cm, what is the electric fo.d ozfj9 2wej90t*v korce between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. kf qrw2z+r x3 h;zi3c2 The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mx2r f2+rz;w kzqi 3c3hark. 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-y8 z9tuug ncjmv8w++7 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 on y+c87ugmutz9 j8vw+n the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 m qs8/ +xut*n8fc7u(pqt ck qg*zds3*pC at x = 1.00 m; Q 3/dc8gup*t** n+7c kp t (qssq8fqzxu2 = 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 charge?

  A point charge of +Q is placed at thew cbeos.bln(l9: q40 b bcs)tdz;h )+f center of a square, and a second point charge of -Q is placed at the upper-left cornon )zbb 0b)c +sell9 w;cht:4fs.(d bqer. 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 f5i,f8sgi *3v w(lfpq.0 nC is atifwv*pqf(gf5 3 s 8l,i (0, 0). What is the magnitude of the net 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); Q3g5 *p- 9l5mpd ;grijkjv p6pe1 = 5.0 nC is atpe;ljmpg r5d*p 6jk1g9 v5-ip (0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of).w1uit bdrkw0 n w 1xt29wi4g an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic fo 41 winbk0twg2 u9 t)diw.wxr1rce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whlty c8+gu +kn3ich are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q suchu3 lkng8y++ct 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 a6- oxzpavon)dc4 ro8/ t x = 4.0 m. Where on the x-axis canov-x 86c/z drpoa4 n)o a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the ori/ )opqqw *d q9j9tq d:fkzgs45gin and charge -q is placed at x = 2a. Where can a third pos4qgfq*:o5dk9w )td9qzq s /pj itive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3eh v0ju na+ls0xpv5 i v4uw x/03dq/1y.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 force of gravity by the atv4p4s 9nlej :ktraction of a fixed proton some distance above it. How far ab9 kvlse4n:4pjove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by n1d c+6x wpt2 8li.o3 rp;hb d;mrtap3tonconducting threads which are 30 cm long. Both are given identical charges, and the electrostw x t3rl o32c 6rtdpm;bpdat+ .h;p81iatic 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 the 7(z vuqo16z)pzt0un aelectric field at a distance of 1.0 m from the7)16u(azzu0tn vp oq z nucleus?

  What are the magnitude and direction of the electric field at a distance a+f k*cebw3 u,of 1.50 m from a 50.0-nC charg,ek a bu+*cwf3e?

  A 5.0-C charge is 10 m from a small test charge. What is the magqnd6 8aimum j-jxk5w0+rpcs/+ v4fl5 nitude of the electric field at the locatioxp vf 46qj+nid5ku+r 0-mj/l8ac5swmn of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What d y/ea)6pu4lp is the direction of the electric fdpu4ap ly6e )/ield?

  A 5.0-C charge is 10 m from a small yxmrzfpa 46xk9k0 *vt xu7at,-*6y ixtest charge. What is the magnitude of the forcepxfivx 9xat,4* ut*706-a kzy6ymk r x experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated ztf:c,y3 hc() .j14tcbfih v tby a distance of 4.0 m. What is the electric field at a point midway between the two charges?tbz,yhh:j3f cc .t)cv1(t4if

  A 5.0-mC charge is placed adg 6g 8/ etmrn pn.k0l2p(jh*jt the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark.g(6tp lr.djj /k*h8nn ep0 gm2 What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4. ds.ig-rd+3y r0 mC charge is placed at t dirdr3 g-+s.yhe 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 = 0.20 msw;1oe h,-fts sr5 tw7( oc1ln. What is the magnitude of tww;n hfos1r-7es o5s l t(1c,the electric field at the point midway between them?

  Three 3.0 mC charges are h;n:cl lv,- rq,ut;j oat the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Finj uql,;-otr; nv:lch, d 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 cor hm(-d )uu69 w3htpcgnners 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). What is the mamudtgpc( )u9h n6h- 3wgnitude 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 uniformlxez s:2z /o*m electric field. What is the magnitude of th/e*zsx2z mlo :is electric field?

  A particle with a charg0djaiy j6q+rjzw q46 lv;: rq/e of 4.0 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 fiekp;afs :z l,do4l*u(,mf .h*u 6ghr uta, .lbbld of 6000 N/C pointing downward. What charge ma;h,h uull*4(,glo. m,:db6 .zbuaf f*st krpust 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. The ball is placed iu 3pee0.iqkem;5e qh 0nside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of theee0e iqhm. 30 pq;e5uk electric field?

  A metal sphere of radius 10 cm c aoqp3*ggvw ,0arries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfgg3qo ,p v*a0wace?

  A metal sphere of radoqr+2 +cgfy6 up2nx( yius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from g+y(cyn + xpqrf2o2u6the center of the sphere?