State the law of conse ,+tjszn7.qnl rvation of electric charge.

  Is it possible for twph -l((rqv 4hf9 c9dmeo negative charges to attract each other?

  Is it possible for a positive and a negative charge to attract each o+ql.rfwh.,tgti 5 ec :ojse9)ther?

  A glass rod is rubbed with a piece of silk. During the prx+q0id2aei ;b-s5org/ *dqi-t q/ ymuocess the glass rod acquires a a2q* qet x0ib/i-r;u/-+ diqgyosdm5 positive charge and the silk

  A proton carries a

  The model of the atom sho(21kvf 3ohuej ws a

  A neutral atom always hq uy27dptniyq w520k9 as

  An atom has more elect.wa ;srih8ucxk+ c 11orons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei . x65+a/j2on cbort9 um( tlnlare referre5 llt. boaj+nm t6or 9/x2c(und to as

  Materials in which the electrons are bound very looselk cz;s.(nq9pl6a9na(qy x*coy to the nuclei and can move about frqlyp6 (sc;cz *.q9aaxnn9k o(eely within the material are referred to as

  A negatively charged a))wr4/y7buq)eclr+1sgjyt.axi8 s rod is brought near one end of an uncharged metal bar. The end sw+.t ua8 l1ybrc/7s))agejx4y)iq r of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and spherb-8yiqd3to.j xb3e8 ,9jnbn . ck.z doe 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 statementiyn. n-3, zjj dkb9 boc de.bx38.to8q is correct?

  How can a negatively charged rod chae n)fnms( w1n5rge an electroscope positively?

  An originally neutral electroscope is briefly touched with a pouu wz irwq 9w6t8d4tj:o:ab6-sitively charged glass ro i4brwwa6o:8u6 - tuwdq z9:jtd. The electroscope

  An originally neutral electroscope is grounded briefly wh ijk n03,feze jo-1k(wile a positively charged glass rod is held near iw(- e enok3jz,ikj1 f0t. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscopq zsy)1qxlqho* m8w,bq2*9my e, and the leaves separate. Then a neg q lxw9h qs8*2m, ozqyb1)yqm*ative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged objesgk2by 4..(tceg(f l pct 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, bu e.s(tclkf(4pg gyb2. t 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 *w). 0;y+go ur kfdbrpCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargk1h6 v krq;k.q 9bage7e is larger in magnitude than the secondr g hkab1q;.v ke9qk67 charge.

  Sphere A carries a net charge f 9tbuiqc n c0uif(3i 3;b4,ekand sphere B is neutral. They are placed near each oceq,4i0t3 b 3;inbk( u9cffiu ther on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attrj: 8aiwpdb6o(a+t , 7ob byzm6act each other with a certain force. If the charges on both objects are doubled with no chapti,87 oz 6: ybamwb o6+(abdjnge in separation, the force between them

  Two charges are separated by a distance d and exert mutual attravq*gw c52 ,r)lkj;-45z mb.clwowra t ctive forces of F on each other. If the chargj52 wr r)w;gbv-ltow,4ma.c 5 kqczl* es are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects at+rrws e(sa o* +u4yh-vfxg. d3tract each other with a force F. What happens to the force between them if one charge is doubes+f d r x.oh(y w-*u3asv+rg4led, 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 vcik00xb8yd2 /kr(4v j3mod sby a distance of 1.0 m. What happens to the mag4 yc0xdi38 vs2/0 b(jmok kdrvnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separa11dtj e7* upuoted by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron 1oj1u7 p edtu*is placed next to the proton?

  An electron and a proton are separated by a distance of 1w8x)4lb2xt rou-*vmh .0 m. What happens to the size of the force on the proton if the electron is movr*tm2x4o8h-w vx ul )bed 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a setup9h/jqw -uk ) nvfo*5ka(6hp1cy: ocond point charge of -Q is placed at one of the square's corners, it is observed that an elecv1)fco: t aynk ou9u5-qk/ h*jpw hp6(trostatic 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 cen y0csdzl/+ap 0troid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an e z/0 p0dcas+lylectrostatic 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 vecos 38/iufr1sptor?

  At twice the distance from a point chgb(g80dh(w.xgam- o hqv n h2+arge, the strength of the electric field

  Is it possible to have a zero electric field value betwe4qql-jip0 vdp.)m- snen a negative and positive charg q0.j)i-sqvm-pndlp 4e along the line joining the two charges?

  Is it possible to have a zero electric field value between two positive chta-p:nf,mu fc2z tw:4 c2oa-i a24sw parges along the line joining the two c- 2-pw,24z4 :afnuptw c:sf 2omciat aharges?

  Electric field lines near psitive point rvl6*e k3vvy* charges

  The electric field shovvw: 3n rkd)n:sh;ui /wn

  Can electric field lines intersect in fr.wku.tcr y sr8(d*bjz)hn m1 -3scan-ee space?

  A solid block of metal in electrostatic equilibrium is play2 -pbvh-2 +yu+jmcvp ced in a uniform electric field. Give a statement concerning the electric field in the bu+ 22mhvy--pc pyvbj+lock's interior.

  If a solid metal sphere and a hollow metal sphere of o4:a(hr z3r+v tdcs.-obq;zb equal diameters are each given the same charge, the electric field (E) midway between the-hor+4;c brdq (zavszbo3 t.: center and the surface is

  A cubic block of aluminum rests f e8k-f37-ba3udt8kz ,zexm,nto*u fon a wooden table in a region where a uniform electric field is directed straight upward. Whf,bux kk8 m7f3o8tt,3 -n-eafu*e zdzat can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic eq 0j vtpwcgtbeq:(:w.d7y 4 ml*uilibrium near an electric charge

  A positive point charge*hg, canyysst4b7l3z ,q*dz2p ox4 y: is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, z,zot4pxl b: 2 qs3y4hc *yns7gd,*yathe electric field at a point directly above the hollow sphere has

State three properties of conductors in static equili vvmxbvf78 6e0kz bl4+brium.

State Gauss's law.

  The charge carried byjt,ghtq- o+hpq 0jz2g2:w wu ) one 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 mC. How c14avcj 2v q7kpg6b-7 q:9a swfwx k-lmany more protons than electrons d v6p- 1q -x wvalsc a:kq79kgw2j4cb7foes this piece of plastic have?

  What is the charge on 1 kg of protonslr6mrc 48t v q93m xevlcq2n06d4hjo; ?

  An atomic nucleus has a chargextf)5d y5k v/ucnr k*/ of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepag gkoqu.h kx 1l7sn,(6gha6k8rated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between h7k6g8 kaqn,x .16glgosuhk( them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is mhfo*xim,/ n9 1.0 N. What is the minhm/9fm,o *x agnitude of the second charge?

  Two 1.0-C charges have a force between t 2fo 2klb2t rfk)ct* dcc/l8u3hem of 1.0 N. How far apart are they?

  The force between a pnao( 2h2na )i$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apaqw v5gn4 x9ik054dt xirt, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between thei04ndg4 ix9 5qk xvw5tm?

  Three identical point charges of 2.0 mC are placed on thed6*i6gts.f pm x-axis. The first charge 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 direct 6 p*.tfgsi6mdion 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 plxk(- 8dj 4prv sa08zun78gdy vaced 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 whi 0 v- 4xsdd8rkny8vp(j7gza8uch acts on the charge at the origin?

  Three point charges are located at the following positions:dq f9r:ab5 7n(xh7b qx Q1 = 2.00 mC at x = 1.00 m; Q2 =x qh n :f5rb7(9q7badx 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 the center of a square, and a second point chqn-m s u;8,grwarge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on th-swgm8 ,;uq nre 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, 0k.ezltrw, x.brh j9ws :fie7p6 6+ :yu); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whatu,x.tfbwpjeekz:9:lws. 7y 6 h+ i 6rr 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); wh/; no7mq2 gaQ3 = 5.0 nC is at (0, 0). What is the direction of qgon7ah2/wm ;the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are ont j+) -k -*;apn; +dbpr/ujlib,)kiyq jp-cplaced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude or -*k;bpko )+nucjjb- -;/n p)q ipt,dy+iajl f the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, w r51f;gk; mtdzhich 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 such that the electrostatic force acting on it would be zero?z ;5kfgd ;tr1m

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 cfsl7i704ekzd0fbyv2y2olu : z p x(9 m. Where on the x-axis ckf0edsp cf7x(y2: o9z70l i4ul by2 zvan a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chax4m)fadun o63)zz be. mu5v.3j(hu scrge -q is placed at x = 2a. Where can a third positive charge +q be placed so thm 3 o3)(z j zbdc.5xhuf6s.u4u)anevmat the force on it is zero?

  A copper penny has a mass of 3.0 g. A total oo l/::p /+ p/jnzztncvf $4.0 \times 10^{12} \; electrons$ 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 upv-iwg2e8trk60 xrjd5 against the force of gravity by the attraction of a fixed proton some distance above it. xv 60d2e8kt w-rij5 grHow far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common hb*l/+*;m5 qw 9aximc;ehu8vgvg t h(point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle b bmvqchuh ;hlet5ag i*v8 ;w*(/9mxg+ etween the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge og;2cjl 3 qkk4df +40e. What is the magnitude of the electric field at a distance of 1.0 m 4q;cklk32 djgfrom the nucleus?

  What are the magnitude and direction of the electric 02 uc l8 +3z up3g76boug2uhqc)dflgafield at a distance of 1.50 m froogz7c6 8u2c hu320gugu lda )blf3+pq m a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of at 0w0xy lragpm8u 71xhy- 4lh xx+0g4the electric field at the lo+ g u lt 8al04hya7xxpwh100y 4xrxm-gcation of the test charge?

  A 5.0-C charge is 10 m from a small teb )hw./v,yocfst charge. What is the direction of the electric fielyfw/bvch, .o) d?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitud:t nmhp8k x-ru9wh1)n9(gtlr e of the force exper-numhxr1 :9( )9ltpnt krwg8hienced 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 by a distance ou5a jao6j xb-dxf5- 7af 4.0 m. What is the electric field at a point midway between the two chx j -5jbaa5aox-f76d uarges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and m4kmpleea mt/r3+ ) v,a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at thtm pk)3r vl4ee/,ma m+e 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 jqxlh k 6 gci73j) k9gb8g;),g 9jbxrcmC charge is placed at the 50 cm mark. At what point on a line joiningl g3 gq8h)g gb7cjj ,jir)xkxc b;699k the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x 4plm ru*9bcjjudn,+7iy8 ke9 = 0 and x = 0.20 m. What is the magnitude of the electric fieldd4r8y *belju, p9 + 9i7jkmcnu at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Tnhu 4s6nk ,3ejj m;;oikor4.dpu i,t.he last u 3irhdi, 4kp,6 j4;emjntuksno .;o .corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges oo+ wofa5f q.8rh ,,xgare placed at 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 magnitu ffq.5x+,aooh,8rwo g de 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 playcs6ci aa8e.1/k 5h1v7f n/hk lpa4umced in a uniform electric field. What is the magnitude of this electr15fiuchcak18pa l/.ah6m/4n s7 e ykvic field?

  A particle with a charge of 4.0 mC has a ma+o(ez t9,mqej1lvyw k, f0j+pss of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of masd3uay-( z h3its 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on (dizaut3yh3- the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 ;9yit - tts:ianC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the elecs ;:tty- ai9titric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is xp a)r wef) x(d4z*p,melff(7u. y n3lthe magnitude of the electric field 5..z3m,ef)lwp*fpae( yx l7(x 4 nf ur)d0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electr+z*gnb gx1 kynt5q(v9ic field 6.0 cm from the cekyq1*ngn+t 5 zg( bv9xnter of the sphere?