State the law of conservation of electric charge gnbeiuidl/8nu80 p;9.

  Is it possible for two negative charges to attract each otzx.yhc6wt 3/- n5zva lher?

  Is it possible for a positive and a negative charge-.nvrrpumcp5. 5ps6dj/qk d9 to attract each other?

  A glass rod is rubbed9. l6x.lgrdgh -n6fx d with a piece of silk. During the process the glass rod ac -h nd6l.9xxg 6fglrd.quires a positive charge and the silk

  A proton carries a

  The model of the atom /xycw rv4, -5 i0 knqj:0xl0rcs4 wjylshows a

  A neutral atom always,zm 9o skk9r1w has

  An atom has more electrons than protons. Th5bpx+ert2mo grb1 6y2 e atom is

  Materials in which the electronsqysi vo r88qn80e7:ehg nr 2.l are bound very tightly to the nuclei are referred to s8nq7e8 .n0ov hr2e: ly q8irgas

  Materials in which the electrons are bound very 20lzp yol/q:h7lxhf7 loosely to the nuclei and can move about fh77 hlp x /:zlflo2qy0reely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal b92qokqvk fbd +. a/rsn1i 6/jsar. The end of the metal bar farthest from the 6 2v/1sdokib9 asq + /fq.kjrncharged rod will be charged

  Sphere A carries a net positive charge, and ag* ,lut/9 bkfsphere 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 sta, gfa9t /klub*tement is correct?

  How can a negatively charged rod charge an electr;beo2ss vymr*7ut4 6n l9ss7yoscope positively?

  An originally neutral electroscope is bri jzh-q41l zauq,uq.0iefly touched with a positively charged glass rod. The ezz0lu 1hq 4qju, .aqi-lectroscope

  An originally neutral electroscope is grounded briefly while a posit(c -,s9 bc.mtid*tl mwively charged glass (,ct-bc* .dm9tm liwsrod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate.5j h/s iw37l w2dnhdh6 Then a ijw3s75ddhhw6 l /2hnnegative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placbnp/t 95 heuv/ve9.xcom g ,2ked 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 nkct/29veh9 ogx,u/ p. 5 mvbefirst 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 consta7jm q af430ctr+curq.nt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a disv4 gy/x9 (zliw.b v5hotance d. The first charge is larger in magniyhgw 9v l5o.bix/vz4 (tude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. Tqg ) a1(rhx2surkg.z. hey are placed near each other on an insulatedq 1h.xr)uszark.g 2(g table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other wittyo-rs84qtq9sup 17 ch a certain force. If the charges on both objects are doubled with no change in separation, the force beqy9csts8o 14qu-tp r7tween them

  Two charges are separated by a distance d and exert mutual attractiver6q9ae1z 3v jx tu55gf forces of F on each oth35zav u56q1jt grf9xe er. If the charges 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 s(dza l/g+ysn/32zbt hjp.8 yhappens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced najhsb2lz g38sypy / .td/+ (zto one-fourth its original value? The force is now equal to

  An electron and a proton are r 1w7l4101q dxfqnyzepp2hk * separated by a distance of 1.0 m. What happens to tfplq*wd1yqxze1124nrk7 ph0 he magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separaqrdd7 g-w tcs4 4 7rnddqc;s/3ted by a distance of 1.0 m. What happens to the qdcw4n -r;r4s7gtdqddc/s 37magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated bw g5csoii/z : nzd6,vahk: r73y 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 proton?kg6o avi3:sr,/ n izhzw:57cd

  A point charge of +Q isgdl/x ) ve;qm, placed at the center of a square. When a second point charge of -Q is placed at one of the square's lg/dqv ,xe;m) 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 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 centrdwaha mxcys.0bu;+- +2pbhb,mu.q3mwi7 ,fy oid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices,s+cmbydw3m a7au .pb by2,h0q,. u;m+wfhix- 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 azpk/ em(n0n 0p vector?

  At twice the distancboq/eccj :0+;+ svdq:meqk9we from a point charge, the strength of the electric field

  Is it possible to have a zero electric field valu) mdv8ei0uydp+z-x 3we between a negative and positi0xd pwe -vy3z 8idum)+ve charge along the line joining the two charges?

  Is it possible to have a zero electric field valuejsct/ uu n5z-3t /er.k between two positive charges along the line joining the t5j / t ec-rt.unszk/u3wo charges?

  Electric field lines near psitive point4ef4 k+7 )k)mahy y8jcd5bcyul2 to 4g(rug1c charges

  The electric field shown 7y (ji -lt*qtyc9)41yal gklb

  Can electric field lines4.(n vf.lgg: smsjd;j 2 r1jbx)tq. kp intersect in free space?

  A solid block of metal in electrostatic equilibrium is plul,5m mb y1:suaced in a uniform electric field. Give a u1s,u5 mlymb:statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equa9oj-s1 pxb* 93qfkmif l diameters are each given the same charge, the electric field (E) midway between the center an x3*f9pfq 1k9 sjbim-od the surface is

  A cubic block of alumin ffbk1 4:5zn wibj9anfp8a8*9dg8vygum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on theag8v5ia * fjyz9b:8fbn8fp4gwkn91d block's top surface?

  If a conductor is in electrostatic equo(mu /- yawyaj ae.(;v )g1temilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundeah,27lg+w xzzd. As compared to the case without the hollow sphere, the ezw7z ,+lhax 2glectric field at a point directly above the hollow sphere has

State three properties of conductors iyl+)ihyx 2r9 nhb3z /csxv m52n static equilibrium.

State Gauss's law.

  The charge carried by one electron isfi 5kv/p/zjei 3z v3x k-.vz9a $e = -1.6 \times 10^{-19} \; C$. 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. Hoj 0 mjte6(d+ulw many more protons than electrons does thijtu (jd6 +em0ls piece of plastic have?

  What is the charge on 1 kg of ,28 l hv9b8xzk.hco60lsos rmprotons?

  An atomic nucleus has a chari2faitfi,25 tge 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, havevbt4myll 5i:5cxug +69d ) ghn charge values of 2.0 and -4.0 mC, re 9u:6c5dlxyvnt4hl mi)5g g +bspectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a secazsd;q3wfsi) ;r7g n4ond charge, and the force between them is 1.0 N. Wi)s gqfnw4;d;r7 3szahat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Howwgrfgt 66 )rhl0*5 fb-wwtd3 y far apart are they?

  The force between a d806 6)gboswxzc 8 iihw wmx-6 sj,+wh$30 \; mC$ 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. If tzuiditt**/+3q+ bjsv hey are moved to a new separation of 8.0 cmji*+t*3qi +sbdzut v/, what is the electric force between them?

  Three identical point c4szq n:s(/x;) pnivq rharges 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. What are the magnitude and direction of the electrostatic force which acts on the charge at the origsrnnq)sq(;4ivz /:x p in?

  Three point charges are placed on the x-axis. A charge of +2.0 mC isbf+wapgz, r. -8ur5 gc 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 a wf.rb,-8a p 5gu+rgczre the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at l2qs)+ 6p pzej1ks r+xx = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.0krzj+6elp q1 psx)s+20 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 p. .jyy:qfrxwmyn*amxnv+, 4. oint 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 tmy .f:,nwvxj..yxa rymqn4*+he lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 =; ad 9 csjt(nyq:q;h5i qd/u-k -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0).5q;9-dd( ny: uqsa;j i/t kqhc What 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); Q3 = 5.0 nk(i9caq p(9 seyp6n *cC is at (0, 0). What is the direction of the net force on ne q9k* yispa(c 9(cp6the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verticvgp2z1)g nay.es of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force whiazvgg )py n2.1ch acts on any one of the charges?

  Consider point charges of +Q and +4Q-vof1(tz3*b;k0 e cg d qrqxn:, which are separated by 3.0 m. At what point, k x1etnf cg(r; 3:0vo-qzbd*qon 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?

  A +3.0-C charge is at ge/ux/l 5qud8gf n:o; the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force o l:xunguqe/5/g f8o;d n it is zero?

  Charge +2q is placed at the origin and charge -q is pl2(6 ilekuuf 0aaced at x = 2a. Where can a third positive charge +q be placed so that the forcei( 62fkuua0le on it is zero?

  A copper penny has a mass of 3.0 g. A total ,eb:sdfw97mo 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 b9lo;y)d.u :6+mcc e 4+clqbhjq se*be y the attraction of a fixed proton some distance above it. How far above +ll 49be qued ob 6.s*;y cec+jqc:m)hthe electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nolz4weae,q 7c+1g2ba o j5rm(lnconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the l o,2abjwe z4(1g+e crl5qam7angle 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 magnitude oqywhl10(l 9 j+wq tz ;ulp3v:yf the electric fil;l+0u qvq3hp( 9w1y:jztl yweld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.500 q2tepkaw1nrx(xec4vcz+id a 1)o 2 lg7pg29 m from aateop(x kg2c0+re42dlqci) xz2g71wavp19 n 50.0-nC charge?

  A 5.0-C charge is 10 m from aoo.9tid2 p .np4qg;sg odw4r4 small test charge. What is the magnitude of the electric field at the lr2.t dw.p 9go;in4d44pgoosqocation of the test charge?

  A 5.0-C charge is 10 1wo0hl a3d xh9v7 3ehgm from a small test charge. What is the direction of the electric fi7 39xhl01ah ho3edwgv eld?

  A 5.0-C charge is 10 m from a small test chu 3s gk;s9uk4sarge. What is the magnitude of the force experienced by a 1.0 nC charge placed at tksks9;3 uu gs4he location of the test charge?

  Two point charges each have a value of 3.0 C and awl2r3 w3w gb3)kffq5 nre separated by a distance of 4.0 m. b g )qlwf2kf33n w5w3rWhat 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 stick and a -4.f4 v *h-nx0awnx : d9*dyy)voo/ enzdwew d/.10 mC charge is placed at the 50 cm mark. What is the electric fd0*xfyazwd.n/wnn: ed*xvo/oew -v d1y49) h ield at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a mb86 6io,b p.jyfarspm s- :o.heter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line jsa8bophr b i.p, -o ym.sf6j6:oining the two charges is the electric field zero?

  Two point charges of ++ta6lw4ey9o: 7x3. aftc /u1iik .qh uw*spsb3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the 3p7:*ftissuqha+.a / o1i4c xbu .tl9kew6 ywelectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squlo;dl( e6bu(eu;/ (cjaw-y j h *nkhdk+q5cw .are of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squarkhjyc .c-;( oqen(djwk+ll* au5du;b6 (ew/ he.

  Consider a square which is 1.0 m on a side. Charges ari64gki u b7eztt t q/jt;9o8j9e 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 magnitude of the bt;jjz 9 i 4goqt68t/7teku9ielectric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in e/ds o,5czu 2sznlxdp g +6:;;3ob rqta uniform electric field. ctgsdd3:+ /o 5 2e,npz zoxu;qr6s;blWhat is the magnitude of this electric field?

  A particle with a chbuf,u )6 :l00dwbpoj karge of 4.0 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 inz joazvi7(gz qz.ni ;c5(21dv an electric field of 6000 N/C pointing downward;vdz1 izo(i azvjcq z(2ng5 7.. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carrie8akb-i. kue;:5di ;oyz l u7tds a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. 8.idzda e;k 5;u7klbuot- i: y What are the magnitude and direction of the electric field?

  A metal sphere of radius 1 7gm r4q 5;td*i0oforn r.9)nlb/hjpu0 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfam0ol.hi7fqto d bg9;4*5n/ u )jnrrrpce?

  A metal sphere of radius : l not+z7s*l tw.6gr s6sme.n2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the msgl. ts+.oe lntrzns*6:w 76 sphere?