State the law of conservation of elono1he7th 1 21szvz9lectric charge.

  Is it possible for two negative charges t3y)svnw;8w*n,zq a iy o attract each other?

  Is it possible for a positive and a negative charfcf ;rps6 ;z j3hu0-cnge to attract each other?

  A glass rod is rubbed with a piec3go u*gp5 eg6y;h lv8ze of silk. During the process the glass rod acquires a l8;u* egg p 3oy6hv5gzpositive charge and the silk

  A proton carries a

  The model of the atom sh *fyxi3 deqxfa-m1y;(ows a

  A neutral atom always ha q4/v y1vu2rg95ty.hx6 frao ws

  An atom has more electrons than protons. The 7emcxnl) g ,) pbn-adf342 agi kqvp+0atom is

  Materials in which the electrons are bound very tightly to the nucl9h bo(8qaac r*tztibkm2m4y 8g5r u3rs4 l;:xei are referred to asql (kzht4:biraa53x;y 8romgb u*t49 cm 8s2r

  Materials in which the electrons are bound very looseld s+c1m+(vhjp+6uc8v-e j- luxl gcc- y to the nuclei and can move about freellc-+gpvjcj-+ ehmu sccx ud+- l816 (vy within the material are referred to as

  A negatively charged rod is brought near one end of avjtm p6//tq ds,(i co7n uncharged metal bar. The end of the metal bar farthest from(,ti/s poqdvm7j 6ct/ the charged rod will be charged

  Sphere A carries a net auf:0l( i9om+kjff.vkit 2norq9i; j5 r7id0positive charge, 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 2t+i7r. of0ulk059(id rkjjoqf: m ni ; ifva9statement is correct?

  How can a negatively charged rod charge an electroscop s: dh:a.dq h7b/,1nsh3 n2khh3kt lpqe positively?

  An originally neutral ele.xe ;ust)mp21rcvjd y -: n/srdqc02lctroscope is briefly touched with a positively charged gd/cmc dr2 js;rn) x.1-vq :2 ysptu0ellass rod. The electroscope

  An originally neutral electroscope is grounded brie4jt0 mkqj1f ivr/ m;s4zm 70vufly while a positively charged gl;0kfm su v4rv 7 q0tjm1mj/i4zass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electrosc f )ix4* stjj8esvt*ywz0ov ru6l.n01ope, and the leaves separate. Then a negative object is brought near the elect1o480sjj.* uztrf06 wxv)ltsni e *yvroscope, but does not touch it. What happens to the leaves?

  A large negatively charge0/hgs4 azana2g ytf* :d 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 the negative object. At no time does either ball touch the negative object. What is the fins a 0g2a4zgntfyha/*:al charge on each ball?

  Charge is

  What are the units of the Coulomb pu.f 1wf vetz qr*d8+ w43yt0kconstant $k$, which appears in Coulomb's law?

  Two charged objects are separatedz hr)h;wlc6-v by a distance d. The first charge is larger in h;v zlrh)6c-wmagnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are p3 w*e(ywm9ihglaced near eacgmw3h*9 (eyiwh other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges )5 +dhi/qbvthon both objects are doubled with no change in separation, the fobd) q+5h/vtihrce between them

  Two charges are separated by a distance d and exert mutual attractive forces o9wtx dgd /:+mif F on each other. If the charges are sepa /m+dt:x gwi9drated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the forbon p/fb j,+od014vrcce between them if one charge is doubled, the other charge vfonc1jp04b/rob d,+ 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 1.0kca :q95psn*lxd(j /wa mv/f. m. What happens to the magnitude of the force on the proton if ac*sf95 /j(a:qd / xnlkwp vm.a second electron is placed next to the first electron?

  An electron and a proton are separated by a distak+xb9ql5 y mowy.u(( jdsh+j(nce of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed nel(jyjydm5 +(u.qo9khw (xb+s xt to the proton?

  An electron and a proton are separated by a distance of 1.;/mvom iv1 .eu0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to t;m e1um./viov he proton?

  A point charge of +Q is placed atucszj/* 9r3i q ( je9kbn2g q3xay4fy; the center of a square. When 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* jb9n(az yki xuyfqcs32rj4 g;3 eq9/ 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 equypt-d6er8)3l bvj( n zif 3aa0ilateral 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 +Q placed at one of the oth jv) aeyd(3 zri-l8na bf036tper vertices?

  Which of the following is no/1;x 6qlnbear06c zevtezb 38t a vector?

  At twice the distance from a point charge, the stre xbg5:f5()ykruq e6 wgngth of the electric field

  Is it possible to have a zero electric field value beth;npuic 2 ich p0ir2s)v8 w(g.;tzy,lween a negative and positive charge along the line joining the two,szt c2h;0pr (;ii) nph.wgv clu8yi2 charges?

  Is it possible to have a zero electric field value between two positijt fkduf5 *03xve charges along the line joining the t*d 3 5kjtffux0wo charges?

  Electric field lines near psitive point :e rcjrs0yb /5 3*,gtzo2jthp charges

  The electric field shown ks7i: :e9k*yvim.ev p

  Can electric field lines/ 5;xda d1tbmn 9,pxhck7dt;n intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elecgm1 rnz 2x1o)kcur,o:tric fieldn, 1u1z)kcgor:m2x or. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each g087nbn2aax4f0 s9hl u*3ztwf 8/mrk l egmv+qiven the same charge, the electric field (E) midwx7*nkz9a4b8 msur8gftla2 / l0n 3fh0ev q+wmay between the center and the surface is

  A cubic block of aluminum rests on a wooden table iut y4a/jr1 s:bhseu8 ,n;a :izn a region where a uniform electric fiel/ er;aybu s:1in8hj ua4:zs,td is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic s6.gp v/e6b uci-*h vgequilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic 4 ,-k /acwlls9ie7irl z)yu5.kof6nisphere that is grounded. As compared to the case without the hollow sphere, the electric fil,cn47yf klrwk6)9/u zos.i5 a iie l-eld at a point directly above the hollow sphere has

State three properties of conductors in statics7bc6+dr g:smeg87mu equilibrium.

State Gauss's law.

  The charge carried by one elecis7iaqhw( 0o-tron 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 /put n3zhy/7cf.sil2 net charge of +2.00 mC. How many more protons than electrons does this piece of plastic have?hp./ins7fu3y t c/lz2

  What is the charge on 1 kg of protona,y qx+07e a*h /s objzr.l0are3rs)m s?

  An atomic nucleus has a charge opkb qa/9ijo-,f $+40e$. 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. ( 9*yuwur8j: wrja6rqc wzj-,0 mC, respectively. What is the magnitude* c,qjra(6:wwrw uzj 9-j8yur of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the foruu+*npzw/lgs 8qi 7 t0ce between them is 1.0 N. What is the magnitude of the set/ zp ul*8sw in0+gqu7cond charge?

  Two 1.0-C charges have a force between themucl .2+abl,mk of 1.0 N. How far apart are they?

  The force between a d kvf 36zlo09l,hgum ql :z7t-$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 c -(ap8tyx1iajm apart, experience a 1.0-N force. If they are moved to a new separation of 8.y j1a8(xa tp-i0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firswsdw*d9uj88 2h kvsq*f( j cc6t charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100c f*j 8ws2c6(dkd89jsv*wqh u 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-axis. A charge of +2.0 mC is placed t6 u6)2b qgiwhat 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 direc26 guq)t hbwi6tion of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1+/-bksyiy d+ y = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x =k/ +y -db+siyy -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is plil6fh3 0nue +b*fn p/baced at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electru0fbf36*n ln p+bih/e ostatic 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) qqymi*,1: aqfc5b 1pa; Q3 = 5.0 nC is at (0, 0). What is the magnitude of1cqmb,:p* ay a qf15iq the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 f r u5g)5jvkm: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 the net force on the 5.0 nC ch5)m rugkf:j5varge?

  Three identical charges of 3.0 mC are plas /wjn(a.:yd9ft(fbc0l vxb1 ced 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 wdfyt b:c1 0 v (bx/lfs.a9n(jcharges?

  Consider point charges un-shis9p.g7 of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be posgh n.su p-s79isible 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 onqes+7 elb)7 qx the x-axis can a third charge be placed so the net force on it is)7qel eq+7 xbs zero?

  Charge +2q is placed at the origin and charge -q is plac 6t5dz1hmznp: ed at x = 2a. Where can a third positive charge +q be placed so that the force z 6hd1n5 mztp:on it is zero?

  A copper penny has a mass of 3.0 g. A total of d/ls +vr *y(nhan7gvv1:5jrr u/mw,e$4.0 \times 10^{12} \; electrons$ 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 gru gs;4h0d sr)out1+u aavity by the attraction of a fixed proton some distance above it. How far above th0 r;ts h+4d)s1gauo uue electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncondi qejn x(7al;px:y)h 3ucting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them a3xnja xeh:;() yp ql7ipart 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 th dm, j86o/00ziszrq cwe magnitude of the electric field at a d/608jqi ms0dzz ,wcroistance of 1.0 m from the nucleus?

  What are the magnitude and directtq +krdo.2j:n, )evifion of the electric field at a distance of 1.50 m from a 50.0-nkf) t+o,e.v:jrq2dn i C charge?

  A 5.0-C charge is 10 m frd-)fkc 6j+tsd ns5*sxom a small test charge. What is the magnitude of the electric field at the l6dsfnx5) js-ds c+*k tocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is uwm)g .g2a u wrxypd4sg2j4sv k: )d79the direction of the eg sgduu) w.4j 2p49:)x ds rmyga2w7vklectric field?

  A 5.0-C charge is 10 m from a small test charge. What ilx.co sns+1ei ,+ (tkjp+ -ctas the magnitude of the force experienced by a 1.0 nC charge placed at the locat+ a .i-s onjlt, c(+1tcxe+kpsion of the test charge?

  Two point charges each have a value ,s* c*4zw6t* 4ykb3( pcptw jpdk sl0tof 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two cha*s *dw 6j3tp4c *bt l,pt4kwkzc0ps(yrges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.2dc- cx5ixk 1e0 mC charge is placed at the 50 cm mark. Wha 2cc5d1-kiexx t is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of aya4gn mkwb g2zh9 1ey-.vw2r + meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joiningzwrw+4mn9y .g ghke vab2y21- 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 m.vth/s)ief.8zzs8 sz9 What is the magnitude of the electric vhizse8szs. ft) 9/z8field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of uhtphv0jfv,vlv)7n cr,+zu;09 .p f bside 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the elec7 uppn,vz uh rl0j t,v;9hcv+.f)bfv0tric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed ato73zl9uae9w1k 21in4 mrep 9d iv0pslzp4ys 3 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). What is the magnitude of the electric field at the square's centeemdz4r23 i 9 v l 43pi0nw19zoslup9say1e7kpr?

  A force of 10 N acts on a charge of 5.0 b:kgn w *iyao is8*56/s ev;ewmC when it is placed in a uniform electrwo5:* kig v ; 8sey6waneb*si/ic field. What is the magnitude of this electric field?

  A particle with a charg1 km-h mvqoj62e 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 0.12rms2,ey83x ym -)yx,loap r o10 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be susp,mryrl1o-s p8yx32emxya, )oended?

  A foam ball of mass 0.150 gu8 k5/ku e2i3i3 mibdqw+b4hi carries 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 th8 i bm5kq2hi+3 /kuwe4i ibd3ue magnitude and direction of the electric field?

  A metal sphere of radiusr)v*auo4 e9 bm (ckyd7 xeq4g2 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's m7)yu odbg xa44kv9( *qerc2esurface?

  A metal sphere of radiumda 6i(d tzqst0s9-o) s 2.0 cm carries a charge of 3.0 mC. What is the electric fie6zaiq 9t0s)(-ds tdm old 6.0 cm from the center of the sphere?