State the law of conservation of e nk 3ow+d0rxel; zm/y2 6s0jkklectric charge.

  Is it possible for two negative charges to attract ea g,2jmio3(0ky q*g2tjc mv6lqch other?

  Is it possible for a positive and a negative charge to attract each othefpf7*zq ;c)t 9zusxn/r?

  A glass rod is rubbed with a piece of silk. During the processfvya+6fto95, qm wi0bl-ko3x the glass rod acquires a positib 90 f o,o+5yit- qkvmxwf3la6ve charge and the silk

  A proton carries a

  The model of the atom showsl n/quqo2hfeh8 8yd :2 a

  A neutral atom always ,d3gk, z2gj tnhbs3 aq* wh/7ahas

  An atom has more electrons than nhu0bvk/i, q-protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclex:exdwh1 /;1y;ocpb i i are referred h1x dy ;e;1x:w/ bipocto as

  Materials in which the elecw14xf6wly bvn:(8 fj jkx5o +nl,k +mmtrons are bound very loosely to the nuclei and can move about freely within the material are referred to aom fkl( kjx1fxw84ly6n: bjvm+ +5n,w s

  A negatively charged rk 1 h7 o,wpj1+:qmk5on pt5wgxod is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will oh,wq 1 j1pop+w 5tn5:7gxmkkbe charged

  Sphere A carries a net positive charge,x) w 9 h6fqux-yxhh)ro:n5r4 k and sphere B is neutral. They are placed near each other on an insulated table. x)x56xruor w9nh)qf4 hyhk -: Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod ch:r3tkr9k ee+uxd +3g2o 9wwd aarge an electroscope positively?

  An originally neutral electroscope is briefly touched with a msat x:vok j 8tm;:,z2positively charged glass rod. The el:z; vt s2x:8amokm,j tectroscope

  An originally neutral electroscope iltmtk; ; s0ys4s grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the eleslys tk; mt04;ctroscope

  A positive object touches a neutral electroscope, q.fcifb0pz8:fz(p0;fzq) wz and the leaves separate. Then a negative object is brought near the electroscope, but does notp )izwzfb8f.pz0 c:qf ; 0f(zq touch it. What happens to the leaves?

  A large negatively chah0u.n z j* 2lsb/m5okhrged 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 balzh/ hnjo* lb5sm2u k.0l, 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 of the Coulomb conwed eu:u1b,s9 stant $k$, which appears in Coulomb's law?

  Two charged objects are separate e yn d idy2, 6me,whrme.92/jgsw0hz.d by a distance d. The first charge is larger in magnit/0 wh2,szm egnwi.yr dyjeh,2.d6m9eude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. T+bidoszqgl9e-cq9 x(ij p -;6hey are placed near each other on an insulated table. Which statement best describes the electr9 e 9l-joqc6(x ; dszgp+iiq-bostatic force between them?

  Two charged objects attract each other with a cer g 0x f2o3gjy(ukng26utain force. If the charges on both objects are doubled with no change in separation, the force between themgx02u3 uy kj(ngo2 6gf

  Two charges are separated by a distance d and exert mutual attractive forces of i6/bbmbv ;xu w/d7tz8 F on each other. Ibztudxwim 768/b; / vbf the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each otx)7pgl ;i1 rpp*lws*z1 mh6dwher with a force F. What happens 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-fodz*r7p1l;pgl*1w 6)s hwpm ixurth its original value? The force is now equal to

  An electron and a proton are separated by a distance ec7mnnup5i;ny q 7a58of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next5 y7nqm7 un;p8cn5ai e to the first electron?

  An electron and a proton are separated by+ entxql0 3 vvzy0p ox1gn0-- nhe4nl9 a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the pronl0tpy3z410n+- v ex9n0- ho xqngvel ton?

  An electron and a proton are separated by a distancew 4q7(2fby q7hmiu l35rx i2po of 1.0 m. What happens to the size of the force on the proton if the electrbyfh57324u(m7r wioq2 iqxlpon is moved 0.50 m closer to the proton?

  A point charge of +Q i7,:at0no3-fzoy gk w ss placed at 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 on the positive charge at the squarey37 0oz,-: ftasn okgw'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 thyqkf:vpn5 ox/4qzp y.5.wx i:e centroid of an equilateral triangle. When a second charge of +Q is pl i z4v.y.5qox::pqxynw/ kf5paced 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 g0oykzx*0r g7 vector?

  At twice the distance from a point charge, thnw9qz ek / f,8ycwfq67e strength of the electric field

  Is it possible to have a zer oz+/qdh4yx+uo electric field value between a negative and positive charge along the line joiningz +qyo4h /dx+u the two charges?

  Is it possible to have a zero electric field value between two positive(z9w u5b9azdx charges along the line joi9xza b z9uw(5dning the two charges?

  Electric field lines near psitive point cha0 j- jdnesx1m)rges

  The electric field slhfi4 1u*j:*fllh,y-i(s vpnb - *d adhown

  Can electric field line9kh-c bt4 -j)vfjo b;ps intersect in free space?

  A solid block of metal in electross7y/ w jyo):drwrq0, a a*5ehftatic equilibrium is placed in a uniform electric field. Give a statement concerning the electr) s/wd h:*ajrf5,7 ye0 yqarowic field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal dbkym qm u,;v+1iameters are each given the same charge, the electric field (E) midway between thv1,+umkm; qyb e center and the surface is

  A cubic block of aluminum rest2amne (i )x; kvl,pdg1-xzv5ws on a wooden table in a region where a uniform electric field is directed stra5w;i2 ( n vd-pkxale)vgx1,zmight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near jwg3(n34f,6jadw5 m u fml5wtan electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groupladlp, /u7yl y1y4j )nded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphp1l/ yp y,4jd ly)l7auere has

State three properties hzk be3mv --5 wy5+n- ztt9xykof conductors in static equilibrium.

State Gauss's law.

  The charge carried by one elecsjmg*mc1 c+:xjcoq0;l:7 d l35eoo gjtron 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. Ho;m/0,u*bihw j69 n*h(kwwv d otb fro2w many more protons than elech 0 /,wno( o k*6jwhbv2tdfr*m;9iwbutrons does this piece of plastic have?

  What is the charge on 1 kg of protons5 o au,kjovt2c 6(op-e?

  An atomic nucleus has a r( 2u8su u;0h.raxp pucharge 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 cm, have charg/y:0e1zuagx4 tsp( syd ,hom8k b3 4tze values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric 4y sksoezpb0,xt1h:d z38a 4my /gtu(force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betweel5etw9 (io/ syn them is 1.0 N. What is the oilwey t(9/s 5magnitude of the second charge?

  Two 1.0-C charges have a fo6 atam/adt 5:/6uaquw a.*pd irce between them of 1.0 N. How far apart are they?

  The force between a f*b:lz 4mvf(ric4c2 u$30 \; mC$ 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 force. 5 o;v9unpa: p+i.1 apgakia .q If they are moved to a new separation of 8.0 cm, w: ak+o in.agqpau.i5v p a1p;9hat is the electric force between them?

  Three identical point 0vgjch(qe ;o 2.l dxh0charges of 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, and the third is at theceoq(l;d hjgh.vx 020 100 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-axis. A charge of +2.0 mC is.yk;kg p gd4zvvn xtr,4z64m* placed at the origin, -2.0 m C rzzndg4p 6v4*v;t,k4x.km g yto 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 the charge at the origin?

  Three point charges are located at t m:;* r4/zr(0u .z)spxl-7i mcpv5hofggrf ddhe 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 f5z4)o sdfv7mg(z *pdrc/h u ; -r rm:gf.0lxiporce on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a sec2jjf 8auud: c)ck/.u xond 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 c8u:kdjujacfx/2cu ) . enter. 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 = 5.0 nC is 5b0a r mt,ux)5 82fuk lxysoq2at (0, 0). What is the magni2orfy x),bu sm 0ktax5ql8u25 tude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0jqo):e +zq 7ow.30 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 netqqo j7:we)+ oz force on the 5.0 nC charge?

  Three identical charges h*- 4t.dpxslo px5x 31/cjgw yx) n lk;k/*rzcof 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude *hx k x / gx1x 3ny-/t.dp5lkjp; crczsolw)4*of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whla8,mb mvzg14at point, on a line between the two charges, would it be possible to place a char la481, vbgzmmge 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-tvb9ts3drxd fidx+ch1; /b)8 C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it ish/f;ddb8cdbt v i3+s1rx9t x) zero?

  Charge +2q is placed at the origin and charge -q is placed a)f u-rod0imq av)5fkj x x*g.(t x = 2a. Where can a third positive charge +q be placed so that the force on it is fmjk -d0r.iqgxoux()va* )f5zero?

  A copper penny has a mass of 3.0 3pjbbj 3unv 6 oy.0ep3nfxy:0g. 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 gr-ky(fgj* 8 vveavity by the attraction of a fixed pro ygevj v8*fk-(ton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung fromh; 90jb)x efdw a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle hwbd) 09 e;fxjbetween the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +w-: nas.+.fwpec xi ,g40e. What is the magnitude of the electric field at a distance of 1.0 m from th . efaix:-wpnwgs, c+.e nucleus?

  What are the magnitude and direction of the electri3km5 xi*dy7 py8( (fpsk5wv gic field at a distance of 1.50 m from a 50.0-nC chaf mkk(5iwx7v 5ysp8 (3*id pgyrge?

  A 5.0-C charge is 10 m fccc+smn . ta: /jfh7bl7(rp+brom a small test charge. What is the magnitude of the electric field at the location of the test charge. + cjm afp7+b hts:cr7n(/cbl?

  A 5.0-C charge is 10 m from a small test charge. What is the directv6ns m9t6dozhix6lyyin i, c3409vu9ion of the electric fiv46t3yuic 6 nv9 iomyn,6i0xd9hslz9eld?

  A 5.0-C charge is 10 m from a small test charge. What is the mmkf; 3,c:qm49 o1baif xzy5buagnitude of the force experienced by a 1.0 nC charge placed at the location of the test cc,k;5iuy1m f43 zbmq9oabf :xharge?

  Two point charges each have a value of 3.0 C and are separated zsyect,z:yj, ny6;j/ i:ab2g by a distance of 4.0 m. What is the electric field at a point midway bjb zj: 2,z,:/isey;ny tc g6yaetween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter4e6/wv y hoa/p stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm o/y h 46a/pwvemark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sti)45rkz.srx9,uvjm-s4ojsxy ck and a -4.0 mC charge is placed at the 50 cmx9ry.z,v4 ors4 j 5-sjux km)s 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 = yw 0;v )ajo 2bf:(l0u1k n6mzync)o il0.20 m. What is t(w) v;uo1fi:kanmo0)6b2n yl lj y0czhe magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at t6 v(sz7uy (cfostql84he three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the l futocs vq7(y8z4s6( electric field at the center of the square.

  Consider a square which / / qbpi4pff ls3vb;mc;g00ic is 1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); /pfqi ;bcc/i v;gb4fl0p3m 0s +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 is plfflmb*lu ;6 ,qaced in a uniform electric field. What is the magnitude of thifm6*, lf;q lbus electric field?

  A particle with a charge of 4.0 stvk9t1 41 f9q/gwrm0 lg2hgzmC 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 mas8 s jtvrzlk dpwg*fh5uw01vm6(4f7:qs 0.120 g is placed in an electric field of 6000 N/C pointing downward. What char48: 5z flg0vsjfq*6kptwwdm ru (vh71 ge 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 ball is pg w( :7fkqxdv6laced inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and directioq dwv f:kg6x7(n of the electric field?

  A metal sphere of radius 7 9li)ctdktz2b l k7s210 cm carries a charge of +2.0 mC. What is the magnitude of the elecl idstkb2tkz2 ) 9l77ctric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electrip5oh( l+prs+ nc fp+on( s5l h+rpield 6.0 cm from the center of the sphere?