State the law of conservation of electbo)17sfd r 0vckg-odqy xohth a*t1c y20/6y( ric charge.

  Is it possible for tw2wz jo ;yk y;juq0v*8io negative charges to attract each other?

  Is it possible for a positive and a negative charge to attrar(i9ry1d ,svi2j dn/m2rvrt * ct each other?

  A glass rod is rubbed witt w v.i9q5dn8 4zh7,1lkqjlrth a piece of silk. During the process the glass rod acquires a positive chdl i 8ntvt5qj wk4h 97lr,1.qzarge and the silk

  A proton carries a

  The model of the atoc /bv avsl.4f ,ei/ 2+o/oaqbgm shows a

  A neutral atom always hasp6 zr k.rikhwn .7u.u12+ ncej

  An atom has more electrons than protons. *a;h;q13o qg b)vcfkt The atom is

  Materials in which the electrooatg7 cc0-bq* ns are bound very tightly to the nuclei are referred to as-cgb7qo*c0a t

  Materials in which the electrons aw2xd/a ;m 7+k7drns2sjog od0re bound very loosely to the nuclei and can move about freely within the material ar s7oxksrdwd; +27d2 0njoa/mge referred to as

  A negatively charged rod is brought near one end of an unchar (*aw9n(j: 0cm:e agauq*f.fg, mcgptged metal bar. The end owg,:pc*(u.0ae cfnag(jamf gtm9*q : f the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B ij74,ii r*-zg 8nz:lhq4 + l e:iflnjpacjf a;:s neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correc*z za g:ja4q::fiinll+j- ce,8 in7 frjp4 l;ht?

  How can a negatively;r8mp- d0yh/hv;ml 5 qotu-mx charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a bq4/tbbekk2r 12e;ah positively charged glass rod.k t2keb4 aebq ;h21/rb The electroscope

  An originally neutral electroscope is grounded br ;6e/yq+en nebsyfi :4/jmk rd lr5)*xiefly while a positively charged)k/ 5s6e f;nqnxeejb*/rlym4i r+d :y glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sehq:ysio* 1l- *jn(voa4x4oymparate. Then a negative object is brou njy:o lv *4a1sqi*h4oo-(yxm ght near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed ol: cxkr4z 0kqx+:8hm , 8e*oegk.h xyun an insulated table. A neutral metallix lx. uem8*reqxkyh + o:h:8, 04kckgzc 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 final charge on each ball?

  Charge is

  What are the units of the Coulo93k.4h)nig 0 pzzj /rd,ox1tb,aw d6fyen;x vmb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger 9qs7eudc6 pr).9 5,k bciaiua in magnitude than 5 )u,9sru 7eicdikb.a6qap9 c the second charge.

  Sphere A carries a net charge and sphere B is neutral. They ar *.g5zmx/ f5sb un/qvse placed near each other on an insulated table. Which statementzbsu ms//g*xvq 5n 5.f best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges on s0dkd yqk+1p1both objects are doubled with no +skyd01 qk dp1change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcesd.t*rgiu3r;j:yrsg g+th n fd . :o47f of F on each other. If the charges afsujiy4n .:hrfdgrord3 :7 +;tt*g . gre separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attrwxhv7mg:(*8h5a2xypu ojw,c vph4( iact each other 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-fourth its original valug 25y hxhivcux:4 ,pw 8j hvpm7a*w((oe? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happenggpu166by. pn s to the magnitude of the force on the g.p 6 ygn16bpuproton if 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 happei eci6i+k;jdv+ *qbw(1wb qh:ns to the magnitude of the force on the first electron if a second electron is placed nextc ;wqvqiik ji6 ew(b+1:+*hdb to the proton?

  An electron and a proton are separated by a distokp.) :q51tuh(jmu, nil xj 1rance of 1.0 m. What happens to the size of the force on the prot(jr:1 xk ujlqn.1mito5,)up h on if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is gl2q:s+b r/gn 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 observq2+/sng l:brged 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 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(y-:rkam*ln6xe9d mr rfa(e634u c da an equilateral 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 t9aeaey :(*r4dxcdmfr( 3m6 akn lr6u-hat acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is nh ph7( wg8 :;ez36ywxn tvr9mj;0 bndhot a vector?

  At twice the distance from a point charge, the strength of the electric f0(c5 hxgz8y3se2 wrp xield

  Is it possible to have a zero electric field value b5:uep4q c/v mlpe, x.wetween a negative and positive charge along t5 wv:.x/, 4pmpelqc uehe line joining the two charges?

  Is it possible to ha j+:8 c.br(oa nmk6vhjve a zero electric field value between two positive charges along the line joining o(+a n.vm j k:jbcr6h8the two charges?

  Electric field lines near psitive point charges w)9/kcm1uy8v3s xqdu

  The electric field showc4 xxk*e gm)2tn

  Can electric field lines int7er y8hz sd(s,ersect in free space?

  A solid block of metal in electrostatic equib98yw5 k igmxhd*:-wslibrium is placed in a uniform electric field. Give a s x5 hbsk-d*8wwg:ymi9tatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sph jt7o5(ael 0 y:tmk;ef.e6ajjx/xg s*ere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface i6 yljexktj o(;m*e7gx:0/ setfa5 .jas

  A cubic block of aluminum rests on a wooden tab6w) .klyxv(yiz1 o qj/le in a region where a uniform electric field is directed straight upward. What can be said concerning the charge.6kl vx ij)/zw y1qoy( on the block's top surface?

  If a conductor is in electrostatic equilibrium nep bmz7f6dm*4nar an electric charge

  A positive point charge is enclosed in a hollow metallic syonly;naf6t6tr4 d44 phere that is grounded. As compared to the case without thea drtn4 ft6y4o;yn46l hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibr p;b l3xxfgq+(ium.

State Gauss's law.

  The charge carried by one electron iscd 83u/r+j kjq $e = -1.6 \times 10^{-19} \; C$. 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 many more protons than e1p2 l e0klufe1/unic*5y ,atwlectrons does this piece of plastic w/ 2 ,pet eu1yfuk1l icla5*n0have?

  What is the charge on6pcyv v ;yg7p2d ;eg)m 1 kg of protons?

  An atomic nucleus has a charg4f h wc,p y8wcqa2b5/se of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sep1z48iba3 2g4c e k6 uww7egjfwarated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitujc8ikuz w7gb24w4 w 3 agefe61de of the electric force between them?

  A 1.0-C charge is 15 m from a segv6r + vxaui mf97xd0(cond charge, and the force between them is 1.0 N. Whatvv0 67du igax+9rfmx( is the magnitude of the second charge?

  Two 1.0-C charges have a force between t ;31*k,oguvt2w wem pphem of 1.0 N. How far apart are they?

  The force between a a 7p1hp5 f2sj:o j+kqx$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart,gjr0 rh2 ;hb z/vms5-c experience a 1.0-N force. If they are mosg- rzbh/jvmc; 2rh50ved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point chargy85ihu xy+thz s(8yf96; ifs ees 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 the 100 cm mark. Whatif ;ui5xh+yz hfs s688eyy9(t 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-a/+gc se3jtq aa-u+jm4xis. 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 etjq4 m 3+a+/g jcs-uaacts on the charge at the origin?

  Three point charges are located at the following positions.( oyqhsgsv-tz ol 3 :/:f2meo4x puw/: 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. Wh wsv4f.t z2yloogx-: (s h//eoq3 ump:at is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placa/6o, 5xyr kased at the center of a square, and a second point charge of -Q is placed at the upper-left corner. I6xk,rsy 5aao/ t 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 xqe4gg9 b;y.et2lo+jn f9w5m= 5.0 nC is at (0, 0). What is the magnitude of the net force on tt49o.f2gqb;n+jxee 59m g wylhe 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -f0a bpqp8 3g.g1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force onp.g8gb30 fa qp the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verticeshu1lbl56i/bk( u9r jd of an equilateral triangle which measures 30 cm on a side9burl d i(/k hb6j51ul. What is the magnitude 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.lhkj4 9g xpir6( q22gq At what point, on a line between the two charges, would it be possible to place a chargx26qi(rhp9glkg j2q 4e 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 chn ft*.l;b lbj;8k,vitarge is at x = 4.0 m. Where on the x-axis can a t.; 8l;l bf*n ibjk,tvthird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed k(wle07u )vja at x = 2a. Where can a third positive charge +q be placed so that thekjae l vwu7)0( force on it is zero?

  A copper penny has a mass of 3.0 g. A totalb 0h*/5fmwa ex 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 attraction lz+0pz9ul k*l of a fixed proton some distance above it. How far above the 9l+zlp lzku*0 electron is the proton?

  Two 0.20-g metal spheres are humlc;11k8udsr u j-vy;ng from 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 beulckvs8u1dj-;ry;m 1 tween the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is c:gk7a4-sn u wthe magnitude of the electric field7 angw4 csu:k- at a distance of 1.0 m from the nucleus?

  What are the magnitude and directisx)pemo)-1c ;6n sffton of the electric field at a distance of 1.50 m from a 50.0-nC char1f)psox)6msf c; ne-tge?

  A 5.0-C charge is 10 m from a sn7oek8+5 5gy5xxvg.urx7mqeooh: 7 pmall test charge. What is the magnitude of the electric x5o7pgx uy vhg75x o:k.reqem+85o7nfield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction acx59ms (: o+)nwmndeof the elec od+es)cxamn:5w9nm (tric field?

  A 5.0-C charge is 10 m from d3w(1pp9 r ldxj9vblb5. qmzh(u(l (va small test charge. What is the magnitude of the force hw9xbzvju(l(( ldlp5 (qvpr9. 3 bdm 1experienced 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 sep (:hnymetwb4,j u2bm5arated by a distance of 4h(utjn m2:m5bwb,4 ey.0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stic i4jzn)ak tqr1p wl7y u)uv3* 8x+.ayck and a -4.0 mC charge is placed at the 50 cm mark. 4ypy 8jkau x1c+inu)7 ztwqa vl.3r*)What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at tklw :n.0gdsmacc1;7 jhe 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. c7aw;mcjk 0g dsln:1 . 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 m. 13nta*13 ,obuy ml ryfWhat is the magnitumntl ,311ybua3* ryofde of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a 4;:dmk4ggk ;cfd ij5pj :ea9 qsquare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the centee;kc ;4g:p5: d q4k ja9ijfdmgr of the square.

  Consider a square which is 1.0 m-kv l ;egxuc*5 on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (;-v5k u ec*xgl0, 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 char5amt;o8. 7kkem s.wb age of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of thi .7kmm.8bw;ae5oastks electric field?

  A particle with a charge of 4.0 mC has a masst*ia(r48j . m+ s dgq14vxw z;.dvdfox 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 field of 6000 N/C xwvh*1yw92xtv/c) ij affo 3s-* g sq:pointing downward. Whacxg*2tiw of-)jas/*w3 f19:vyhx qvst charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g .tg6( nc dqk/icarries 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 the magnitude and direction of the electric fielqicg/d6t.k (nd?

  A metal sphere of radius 10 cm carries aaxedm) +dm.j-0 -fbg w charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere'+fej.a dmd- 0gb-m )wxs surface?

  A metal sphere of radius 2.0 cm carpbhdvo.5epng5r/ ,3 tq+wep7ries a charge of 3.0 mC. What is the electric field 6.0 cm from the cen p3/n q5bvp .e57gpo r,dwet+hter of the sphere?