State the law of conservation of elexk.gavslaeyth+:a7q w u 60h 58+m*gqctric charge.

  Is it possible for two negative charges to ao(sn;m:5r(vnibdb kk 6o0q6 ettract each other?

  Is it possible for a positive and a negative charge to amauiogtf 0g- d;qs )52cr f 2q(9c4rbqttract each other?

  A glass rod is rubbed with a piecwvji990 5- jinlmu(*gims p:pe of silk. During the process the glass rod acquires a positive chargemiws 0 jp59ni v *p-liu9(gj:m and the silk

  A proton carries a

  The model of the atom sin uz4hbcl1 5)2+:fbj,j jpzb hows a

  A neutral atom always h;ps bbggww; ;5r9 w7xuas

  An atom has more electrons than protons. The atom ii5f ftw(jty)e+ )mt (js

  Materials in which t or; 0*m sjqtcy54km:the electrons are bound very tightly to the nuclei are referred my4 ttsj :k5m*0oq; rcto as

  Materials in which the electrons are bound very + :lj-67qwnrex0+ 8swzwe gorloosely to the nuclei and can move about freely within the material are referred tle orz-erx0 qn :8jsw6+7g w+wo as

  A negatively charged rod is br/nnyxy y10lnq* z4fp.ought near one end of an uncharged metal bar. The end of the /ny ln*.z1npf0yyxq 4metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, t(jniq inv 3lijo8;+ -a28)rsu8 xdns and sphere B is neutral. They are placed near each other on an insulated table. Sprs i xn(q+2 -ajsn8il ui8v8tj) n3o;dhere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivelq h6q+ 2goqw) hoc.7rfy?

  An originally neutral electroscope is briefly touched6gp3 f*9fdfz i with a positively charged glass rod. The electrosc d*f96ifgf 3zpope

  An originally neutral ele 5(f8zxo7we/cj iii;rctroscope is grounded briefly while a positively charged glass rod is heldi ezc f7iir/8oj; wx5( near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electrbpr2pj 0g( 2awoscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What hap20bg p2w (rjappens to the leaves?

  A large negatively charged object is placed on an insula ptsd2 4c3dui5 m2hm3eted 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 objt53mm4s2 ddi2 h3eu cpect. What is the final charge on each ball?

  Charge is

  What are the units of thko62f sy:xoz(e Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. x;h8+xus/j r (hbi/ qh The first charge is larger in magnihu ixx8jq (hb;h/+r/stude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. Theyn-e zplf,u mmy2u ;)*q are placed near each other on an insulated table. Which statement best describes theq* -l,p ynmfuz;)2eu m electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges on 1 adglb( ,w.) -ij myvi5slb;gboth objects are doubled with no change in separation, the force between t)iw.- 5;mlgbb ,j1da ysliv( ghem

  Two charges are separated by a distance d and exert mutual attu8(kuznp5p p) ractive forces of F on each other. If the charge8 (z)n ku5ppups are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens te14orha sqw 8k6wf-w75dn *h xo the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their s5fwe*w 18nd7kx6wh 4qaoh-rcenters is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distan *2vibnwbxdudo -2)4uce of 1.0 m. What happens to the magnitude of the force on the proton i2o2 db udxiunb *vw)-4f a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What ha wqjw5 j8fyt69ck2b; jxc05amdnlo 6-ppens to the magnitude of the fwl-m5fja cb6o9j5dt6 xy 8qkwn2 c;j0 orce on the first electron if a second electron is placed next to the proton?

  An electron and a prot1j0 tstoff7 k2p*xrt:v7lq i /on are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the xt2/:rs tjof17p t0lq 7k i*fvproton?

  A point charge of +Q is placed at the cent(vh: ah3a(mbo/t)u-dvh,n9 p/dgn l ser 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 on the positive charge at the square's center. Now, identical charges of -Q are placed at the other three corners of the s-:)/ 9htuo3ns mv(h/h pala,v( dngbdquare. 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 triangle. Whe)9 veh5xtn.swfx mc :k9k.v1sn a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N a k)1kc. 5fxwtemnvsvs.9x: h9 cts 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 vectore6 hfv4/i kmj8?

  At twice the distance from a point charge, the strength of the elec r1qws//,j2*myghxq ctric field

  Is it possible to have a zero electric field value between a negvuy j-kpb 576.w)s*l l1eiy.v 9 bljupative and positive charge along the line joining the two chares9lpb.jv 57byl*wyuviu j 1-l)pk6. ges?

  Is it possible to have a zero electric field value between two positive cf4gjn.mxm24;lx/ vc hj. i9w r8,n rqhharges along the l/8mr4xvchh.j9q;nflxjw i ,g24rn m .ine joining the two charges?

  Electric field lines near psitive pok-at-ld parfo(imgjuu.r d80 f74;: pint charges

  The electric field shoo w;)kagc81dvvy xl55wm2k* ; o jje2nwn

  Can electric field lines intersect inlyoh i2rd yw .op1 ,z:mf6 p1zpp)q;j: free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform ej.yy c277ya:2z28k dmy ecd3yr or;yhlectric field. Give a statement concerning the electric field in the bloc r.a:22yd;y3ok2d zyc jm 8ce7h r7yyyk's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are lgt3zrs*7g. jeach given the same charge, the electric field (E) midway between g rgls.jzt 7*3the center and the surface is

  A cubic block of aluminum rests on a woodenm cv7(bb;yq p 88sx6;gn x4,fef+mfcu table in a region where a uniform electric field is directed straight upwa;f7sg4ycbxv cqp+bf;6 ,fxeun 8 8m (mrd. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric0p 4) mzhqtgtx.g4pzgj 3r1y, charge

  A positive point charge is enclosed in a hollow metallic sp+i7 hu0zg) jophere that is grounded. As compared to the case without the hollow sphere, the electric field at a point uzjih7)op +g 0directly above the hollow sphere has

State three properties of conductors in sthgx )me uib46;) jod,ratic equilibrium.

State Gauss's law.

  The charge carried by on 63s,l 3zhdztme 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 w5xvp8qg(v n:y4x9vt mC. How many more protons than electrons does thi:xvp5wnq (xvv9gy t48s piece of plastic have?

  What is the charge on 1 kg rt219fq2+lz(,t 9 eu +c wezwpvk; qugof protons?

  An atomic nucleus has aqu e4*c3iv fi) 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 3f wh-l4ywj:s cm, have charge values of 2.0 and -4.0 mC, respectively. What is43f- s:jhwwly 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 i )7c) o(9rkb.* qnwfia tar/nvs 1.0 N. What is the magnitude of/)n (avq9ob kt.c*r wria7n )f the second charge?

  Two 1.0-C charges have a force between them of 1.j(b2p nenukbpl5 nk6+us)+6luq)l (x0 N. How far apart are they?

  The force between a )h kh 6 hs252s3 a3xaoiz3mofd$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm ap)m vd6 rwh-mp0w:)c4jxm wcw, art, experience a 1.0-N force. If they ar4)-6c c vwrwdm,mwh:xm )pwj0e moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are pn0.nr e:, l*1zd i.scaz:vtm1aogp5 e laced on the x-axis. The first charge is at the origin, the second to the right at t:nz*po,z01.mi1:c5aev ard sne g .l x = 50 cm, and 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 gmt p;3 *.v8jdmsucm3 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 on3u.mm*j8; mc vg3pdts the charge at the origin?

  Three point charges are located at w9jt)dczmd (c0;b ik xad1z1:the 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 ofk m dz10xci:j() wazddt9 1;cb the force on the 3.00-mC charge?

  A point charge of +Q is placed a8q .psa 9:jvlr i(-xyy;idm6lt the center of a square, and a second point charge 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 i(j8lm a9l:;d.y qr i p-y6vxsis 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 y*0s7e x2emdek5 zhz4nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the n7shze4mdx5 z2eyke0*et 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);sj(2drx* nue0 7mrfd 9 Q3 = 5.0 nC is at (0, 0). 2rdr 7f dx(m0uej*9 snWhat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3bc31sf h 1ct*e.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force whif sbhc 11*tce3ch acts on any one of the charges?

  Consider point charges of +Q and +4Q+iri:86jr) ;3wwa8rj fwyd yzz9 f7bo , which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge ofi8wrz9awrdf7b ijf ;z8oyr :)6 wjy+3 -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. Whet 7)8s. d hx*u sii pdlgdc7vpx7:d-:cre on the x-axis cansh7.-xvp cl8d:d7pu) iidgcs t*:x7 d a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge 5 1p1zxaj-wxj-q is placed at x = 2a. Where can a j wj1ax 51xpz-third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totaf,p 1sf2o(4ct hewjxxk 3x )7yh2k0bdl 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 att6nr o h(7/b2 r/fsrl+eifjmy3raction of a fixed proton some distance af6 iln//+m oyeb(rj23rs rfh7bove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common pz4lrqmf +hb3 8oint by nonconducting threads which are 30 cm long. Both84+lb mz hrf3q are given identical charges, and the 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 chargel6prs iyy;0 ga0tj8o,u- g ji//+hmgi of +40e. What is the magnitude of the electric field at a distance of ig0y,i0oaljmu/ +; gst -gj8rh/ipy61.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a did w dhdd,/ybz hq5.3)zstance of 1.50w3/d. )dqbzd h5z d,hy m from a 50.0-nC charge?

  A 5.0-C charge is 10 m frm db* +gon,pk6 ,ojky9om a small test charge. What is the magnitude of the electric field at the loc ok ,*bmnykj,pd96+g oation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What isow b0)-qu)lpoe v i(-x the direction of the electric fieldq(oo)- b lpwu)x-ive0?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of tmg j,wkyq38a cibin4;(k:d l) he force experienced by a 1.0 nC charge placed at the location of theii: 3ml nykgqwc (d4,ka;8jb) test charge?

  Two point charges each have a value of 3.an 4way .i1v sh7nrk cg24q-:t0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway bet4- .2gar can 4syq7w nitv1k:hween the two charges?

  A 5.0-mC charge is placed at t dczc ua7xn,2r,s-wf0he 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What isz7r02,c,-da xuwcfn s the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of;zl, g- zvzqc5f0q.m;d06k w eonv(bs a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At5c;m,k v6gos(0 ;l0 qnebz q-z zwvf.d what point on a line joining the two charges is the electric field zero?

  Two point charges ofpsfn.9m xp6 8b +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between th 8b9fx p.p6msnem?

  Three 3.0 mC charges are at thb kpy;,vs(6kjrt bp59e three corners of a square of side 0.50 m. The last cornek , pp;tr6bsbk j(v59yr 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 are placedi)g+zkqu j **c at the corners of tc *+j*qu) gizkhe 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 center?

  A force of 10 N acts on a charge of 5.0 mC when it 3:(. svk:y-1vhkatjcoh2ahx is placed in a uniform electric field. What is the m ah23 t-s.: vkckjoxva1h(:yhagnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass ontpl:0 qwbn1+w jr0j0f $5.0 \times 10^{-3} \; kg$. 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 elect t(nx4gl5o1 daf .t5dwric field of 6000 N/C pointing downwgw1fd 5(n 5 4lato.xtdard. What charge must 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 balz/g 7ri:swgrbj ,odgdv6zow **th 1(( l is placed inside a uniform electric field, and is suspended against the force of grav zrovoz:hd1/6t(sg*grij*w,gwd b( 7ity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2., daty f p)* t.j (orxcgw68sf8rd6o5w0 mC. What is the magnitude of the electric field 5.0 a.js fwt gwd) o 8fc p6(6otdy,xr85r*cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of gk6e7 kke4fp63.0 mC. What is the electric pk46 6kke7efgfield 6.0 cm from the center of the sphere?