State the law of conservation orr9t mrn s*n62f electric charge.

  Is it possible for two negatio z)(pnowij q26it,k+o(3 lua ve charges to attract each other?

  Is it possible for a positive and a ne:*em+ l- tk2kx isq02f ,osskzgative charge to attract each other?

  A glass rod is rubbed with a piece of silk rk cmorsew.9 yr/kh3y +dfi2 2(-2wfuamx0g 3. During the process the glass rod acquires a positive sucf roek23h-y/ri2a(w mk0+ ry 29d w3g.xf mcharge and the silk

  A proton carries a

  The model of the atom showszmhwq;mvj 2-7 b75 s8vzi a2sm a

  A neutral atom always h d+*7rku ;ks.t1pair mtyox-g1z j9 z9as

  An atom has more electl-.pd ere: t :jyjm8h2rons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are rx*jp7ul8:t)l szh,p ttqr5t5 n 4c -rkeferred to ax4srt8j:lp5u5t* qktztr 7, c)lhp-n s

  Materials in which the electrons are bound very loosely to the nw3eh0ed pv1,buclei and can move about freely withinhwev,de1 0 3pb the material are referred to as

  A negatively charged rod is brought near one end of an unchv03 s*n qdqeo/,o b/7 *wkdcngarged metal bar. The end of the metal bar farthest from the charged rod wqg/7w3dc qb e /,no*don0k sv*ill be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They jz 4gi0gzrp .hz32u0k are placed near each other on an insulated table. Sphere B is briefly touched with izkgphj.2 40z30 rgzua wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrokld;8-ta :0yxt4 st loscope positively?

  An originally neutral electroscope is briepv a,b pvdx.x,-m23tgfly touched with a positively charged gla2tv,v-xg3p pm ax., dbss rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively chc sf,pp o/.m4no ;i4gaarged glass rod is held nea p4 gnc.aim,o4s/;fpor it. After the glass rod is removed, the electroscope

  A positive object touches a nrrnf hmkil7r7/+2c)k eutral electroscope, and the leaves separate. Then a negative object is brorn +2 k)r7mrkc7l /fhiught near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively cm 4k9o;(qj.pj k1*uq7 tw kfhiharged 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 ;fq(4uk1m jij9 kw*pko7ht. q ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constc w/cn0 +kc:ingqe2b+m6 ss/gant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larg /vft wn; v6+ae0ux5l8uvrb( zm:,m aper in magnitude than the sevm,w;f80uv nrmp 5bezv/utx: al 6(a+cond charge.

  Sphere A carries a net charge and sphere B is nz9adx*hzv3(v eutral. They are placed near each other on an insulated table. Which state9vhz*3 xd( vzament best describes the electrostatic force between them?

  Two charged objects attract each other with a cerrx ao)8m d.+/ubt-t1m;bsktz w0c;.a ;smn prtain force. If the charges on both objects are doubled with n0zmc. p;owr;. ts)buskm;/ r-xd n+ ab1mtt 8ao change in separation, the force between them

  Two charges are separated by a dista8y 6ka8h:0 jis *vanjynce d and exert mutual attractive forces of F on each other. If the chargasy8yj* j ahi:6k0nv 8es are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other witbulc4 2djlyu fa.lvpur 3a 8fr93 g53(h 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 red2rdb3.urluu3fy l4flc 8a v9(3jpa g5uced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. Wh;xw0ne c9-v /v9vmkl oat happens to the magnitude of the force on the proton ;e09 vn9ox k/vwm-lvcif a second electron is placed next to the first electron?

  An electron and a proton arez cu/q1yqcx (t)jbq 1 c31eoq1 vu-h2k separated by a distance of 1.0 m. What happens to the magnitude of the force on the first elecc tvk obu21h(yqc113zx) juc /1e- qqqtron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. W sy/c6l2n-kfp n1xo)ehat happens to the size of the force on the proton if the electron is moxeyc2 lp s-o6/)nfk n1ved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of v hx mr:.u:w:kli0- rko kd6o4a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an l6:v0 kxhk-r.wmik:ou o4r:d 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 c3 *ybb6k dxigku4;t( zentroid of 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 that acts on the center chargkidb(4* ;yu t 6bkxgz3e due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vectofs0r3*ga-zss 8s 1xgor?

  At twice the distance from a point charge, the strength of the electride;y*7c iu yxy gtu)frkt/-+2c field

  Is it possible to have a zero electric field value between a negative and positih06a ,79 gbrry uuvj4tve charge along the line joining th r9ub70y4vthr,g6 aju e two charges?

  Is it possible to have a zero electric field value between two positi tba(7ic d9lut1p /i;jve charges along the line joining the two charges(a9lpci i dut1jt;/b 7?

  Electric field lines near psitive poihh0+7zki9z-azw ;n mint charges

  The electric field shown 8nvway ce0emuw-*1qa+h0i 8 w

  Can electric field lines intersect in flfoz*t )rsh9jp: klixx+ 79+w ree space?

  A solid block of metal in electrostatic equilibr8/s.okbj3q gdb 9qm/cium is placed in a uniform electric field. Give s bbkdjc/9o8/ gqm3.qa statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters areibj(-u2h+ c vj each given the same charge, the electric field (E) midwj+(-vbhu 2 cjiay between the center and the surface is

  A cubic block of aluminum rests on a wooden tableo yb2ywkjzr95w5 * c;nc6i,w3 j/g wlw in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on thw562nwc ziw,5gbj9o wl/yk wy *c;r3je block's top surface?

  If a conductor is in electrostatic equilibrium near an electrich mod+q) sqwdr25l*c, rqpq.yx1/, cj charge

  A positive point charge is enclosed in a hollow metallic sphu(whihvzd.co56:m q ,ere that is grounded. As compared to the case without the holiv,q5.hm uo6whd(cz : low sphere, the electric field at a point directly above the hollow sphere has

State three properties of c )mwbe se2ms+6iiad, )onductors in static equilibrium.

State Gauss's law.

  The charge carried by o1 lv,zn ;wb1jnbwujt 9 c5 uap43ic6/bne 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 hasj 3g .vulevuq 9vj5o2. a net charge of +2.00 mC. How many more protons than elec3u v9 jg.v.2juq5voe ltrons does this piece of plastic have?

  What is the charge on 19qu dtn- x- x*i8wf-ev kg of protons?

  An atomic nucleus has a charuz h mhv8/c2iaw skx-n:12yy*ge 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, havewhs++ el:;zuw charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betw+:+ ww h;suzeleen them?

  A 1.0-C charge is 15 m from a second charge, and thf/ ysc6 x6vff)e force between them is 1.0 N. What is the magnitude of the second charge6)/yxfvf 6f sc?

  Two 1.0-C charges have a force bs; s,;1un kbjnoqbnj :ol,3 xi(8 3elsetween them of 1.0 N. How far apart are they?

  The force between a hy,9,rfulr)nq ( bdotys:6 k6 $30 \; mC$ 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 x.a -wjduz2e ;/ntji) 1.0-N force. If they are moved to a new separation of 8.0 cm, what tw)ej/x u;n-.j2 daizis the electric force between them?

  Three identical point charges of 2.0 2f8, citohf9s pe2*kb 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. What are the magnitude and direction of the 8 hb9t2kpf*sioc ,fe2 electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A ch5tyq0cbr.g ,lx tf56u) w/x lparge 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 t ,qfy) r0c g 6lptb5wux/x.t5lhe 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 it m.j8h--m 70swnxvilocated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.0j.v0 m7x-i8mnh -twis0 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 by e9w r(baj4;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 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? bj9 w;4(aebry

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3j02d fo1xnl uv21 wxl3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 1u2v dlnj0l x2wfx 31o5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0. 7i;1xitlxzt8 y6rm/rgja * .a10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the8/i;67 a lr ytrjxia *1g.zmtx 5.0 nC charge?

  Three identical charges of 3.0 mC are placed+ tkc1dj,xx9dq3 cis 4 at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the elecitc xjc 4q13xsd,+9dk trostatic force which acts on any one of the charges?

  Consider point charges of +Q and/7:ek6e6j (rvyi 0so8 qoqimh +4Q, which are separated by 3.0 m. At what point, on oi:qj/ sk0iy ee8 vh q66mro(7a 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?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4 -flkj(zev.+ vexf- 2mna-7wd.0 m. Where on the x-axis can a third charev mzlxfvkfaj. n-72-dwe-+( ge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. . : qsta(;(/ ackctynp Where can a third positive charge +q(q :s(/c tc;akyn. atp be placed so that the force on it is zero?

  A copper penny has a mass of 3b*u.ah m22bj m ayq,g9m .9mk ik;a1rn.0 g. 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 gravity by the attraction of a fixk9duu+ kqy(h- ed protky(ud9+u k- qhon some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a coi cu9s2d 0oik zvow92.oy6oy. mmon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apa vuyw.2 kyc 0.o9o9o2io6sizdrt 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 the ffern obc563:magnitude of the electric field at a distance of 1.0 m from theor 6c5:ffb3 ne nucleus?

  What are the magnitude and direction of the 31;curao l (whs 8t,gqkwg* .melectric field at a distance of 1.50 m from a 50.0-nC a(81cl,wwuqo g;k. ghs3 mt*r charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ob)zepg; 8a01tucas t9f the electric field at the location of the test c za;a1pg8st 9b0t)uec harge?

  A 5.0-C charge is 10 m from a small test cmrkjqol s(t-ccp j6bgo :)1s6h2 y5 -xl l+t4lharge. What is the direction of the electrictllc qjo66t -52m l4+ ):k(1ssrbyxcoj pg-hl field?

  A 5.0-C charge is 10 m from a small test charge. What is the map1jpu hku;5i :gnitude of the forckp; pu1:uj 5hie experienced 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 orc*evs (-sl- wxglxwb-2 a *m.f 4.0 m. What is the electrirc-g s2- -xmlel v* x*basw(w.c field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC c;)df diojs3j )harge is placed at the 50 ;ijdj sd)f3) ocm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a ;jz9f 3tbejo6 mz,y 3bmeter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is t z9 jmbbzjoe3 ;yf6,3the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed/ppem 55;dv oqg/q8(uulezw ( at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betweenlp5u(;/5oq gd uvmepq e/w8(z them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The li o3b(8c1lycj-sh7x bast corner is occupied by a -3.0 mC charge. Find the electric field at - 8(h1bi7byolxcsjc 3the center of the square.

  Consider a square which is 1.0 m on a side. Charges are plh9:qbdi :sfm 2iry6 e *sy(x-ppcmb 40aced 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 ( dqseypi ybh*ip 6mf:90-4c2m:r (xbs0, 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 i9xa1aq5g7f( j ; 2vxyjfl ef8ht is placed in a uniform electric field. What is the magnitude of this elec;x1(x9qjja8 lf e7vhf fg2y a5tric field?

  A particle with a charge of 4.0x q ux/cdx o12,lcmvu0aa4-4l 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 0.120 g is placed in an electric field of 6000 N/C l zh79lg ce3z*pointing downward. What charge must bgl c73l hz*9zee 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 bau-eq zbunt*5 9ll is placed inside ab9 tnezq5- uu* uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cmct06tgkg0 p1 8t2olxs v.h;r z4xoox9 carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's suv0g.24p 8 xto g;rktoczlx9s06thx1orface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whe0g)jewg2g8uoh m 8 /jb/wit1at is the electric field 6.0 cm bgt8eg/gm)1wuji8/e jwo0h 2 from the center of the sphere?