State the law of conservation of electric charge.8b g(61xxb1rd97 6o xflottum

  Is it possible for two negative charges to attract each otherfa-(mm7pdu d83aki w* m6oa:a ?

  Is it possible for a positive and a negative charge to attract eace eci v 3;ir3vsaw/:v.:g4l ahh other?

  A glass rod is rubbed :g( g43r (l5mlugcbw qsmi9o88u fn .nwith a piece of silk. During the process the glass rod acg(l 4 l8n3qn5sc(r98 :gigmu.f mw uobquires a positive charge and the silk

  A proton carries a

  The model of the atom shows x8:j6m7jy ezs a

  A neutral atom alway:po x7sib 3p3ss has

  An atom has more electrons than protons. Thayk5ym09 z8uj e atom is

  Materials in which the electr(6hpm ul9xor1ons are bound very tightly to the nuclei are referred to (9phlro1mu 6x as

  Materials in which the electrons are boun3d;kw(yx+0n2r/ xo l zmkev5y d very loosely to the nuclei and can move about freely within the material are referred ton ;mwvdeo3+0k52 lk(xxy/rz y as

  A negatively charged rod is brought near one end of an uncharged metal bar. Thipii d3n 5/fp(e end of the metal bar farthest from the charged rod wipd p/nf53(iii ll be charged

  Sphere A carries a net positive chargcotr. av ;1iwdza(f7)e, and sphere B is neutral. They are placed near each other on an insulated table. a a;dwi)c. ftvr7 zo1( Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positive8e 9w8dmymna8 ly?

  An originally neutral electroscope is briefly touched with a positively chargc9 ba smk,1;.)y dymlxxuw e;)ed glass rod. The electros)mb,ex9dx; ;1cu lmyy)w.a kscope

  An originally neutral electros7m:vc0 yn(hhl cope is grounded briefly while a positively charged glan0 hy 7hcl(m:vss rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscobwe dh0d*hd6) pe, and the leaves separate. Then a negative object is brought near the electroscopeb)6 *dwded0hh, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral /orlcd9muc,j: kdp;)tu/ j3d 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 )/couk/:d,;uj39 mr ddltpcj 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 ors8l1 za r0:zcf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge ist;,ll)n8 +1l8ioe/hhl t q dps larger in magnitude than8h,)q pdlh1stto nel l+l i;8/ the second charge.

  Sphere A carries a net charge and sphere B vil,iiw ,g9m 9is neutral. They are placed near each other ,ig,9w i9imlv on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other eg+m 4 hkg;w8uwith a certain force. If the charges on both g8ugmw;4+ e khobjects are doubled with no change in separation, the force between them

  Two charges are separated by a kg9)k l cly,ux9vlwg*r4yi( -distance d and exert mutual attractive forces of F on each other. If the charges are separated 9* cxvky- 9 4(guig l)yklrw,lby a distance of d/3, what are the new mutual forces?

  Two charged objects attrap; pltvx 46(4ls1db+ crp1n mwct 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-fourtmt(p 6p;rx1nsw blp4 4lc+d1v h its original value? The force is now equal to

  An electron and a proton ag72acwgjrjh9x r69f 2re separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if9rja9262c xgg7jf whr a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. q 8c -fsouqnl wgz4f76 b-0pj+zc3 1yo What happens to the magnitude of the force on the fi7f zwj1q 8cgsc 0q+- nyobpu6-ozlf4 3rst electron if a second electron is placed next to the proton?

  An electron and a proton are separate0qd64qoh9nd .sic- k hino,8aq 7fl0+p fow /fd 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 clod8dw0.-n97+0s okoaq lfhc ,pq/hi 6ifqfo 4nser to the proton?

  A point charge of +Q is placed at ds8qwzt8pq45f 0gi 3b the center of a square. When a second point charge of -Q is placed at one of the square's 5tq48s3 g pbi zqd0w8fcorners, 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 centroid oof w9fmh2. 8 )kg.mgucc 5wuf5f 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 tcc5kh.g8 w 5f)f omu2.w9fumghe 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 ve;k9f 1cov icg64cd-zi ctor?

  At twice the distance from a point cha+aizp:aml2 u72sm e.d rge, the strength of the electric field

  Is it possible to have a zero electric field vam:t8lm6y) soqi fo9 m4lue between a negative and positive charge along the lin 6omqo9: )istfymm l48e joining the two charges?

  Is it possible to have a zero electric field value between two positii dc42 p1kheh7ve charges along the line joining the two ehp724h idc 1kcharges?

  Electric field lines near psitive point char9ogir r1qc-:s+dk2, 7xjxyxsges

  The electric field sh f r0ly*9zc7*fcuue-f0z p3/ ep4ssqkrn6kg 6own

  Can electric field l/s- 6t6246w tsfvgeqthtt x;d ines intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed ia cmxb8 b9ws* t-lr, ,xirmv62rydd,gxh, 7j 9n a uniform electric field. Give a statement concerning the electric field in the block's inte2rcxria9xbhlbv,89mg7dj6md x , rt,s, *wy- rior.

  If a solid metal sphere and a hollow metal sphere of equal diameterst.u8 k oetuqw-bk)g(q,:8o, fge o0vi are each given the same charge, the 8:0-gi ,o utqvk tb uwgeq,o().f8ekoelectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden(,ozdo+ bt t1s table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surface?+t dtos(o,b1 z

  If a conductor is in electrostatic equilibriuey3z+m j,i2u./avbs cq5 vh2a qsm20um near an electric charge

  A positive point charge is enclosed in a hollpxtd:jf5v7i1ay (6 lnd+ em6dow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a poin f1tai:nld(p x6j ddme5v 6y7+t directly above the hollow sphere has

State three properties of conductors in static equilib ;iocyxi2r5*zzl u3 l5rium.

State Gauss's law.

  The charge carried by one electron is u)p rkmdt2j6 1$e = -1.6 \times 10^{-19} \; C$. 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 el2+p 5f- n x2 kcg4hjwfaw7xae5ectronahn 7kgafjx+52x4-cpfwe2 w 5 s does this piece of plastic have?

  What is the charge on 1 xk691kt w og7e gk1bpb+khp42 +y0eehkg of protons?

  An atomic nucleus has a charge y+hzfev0 x;: ;vfls.lof $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm,s)w yv myr0).*vjs-.pf:q,cnpmj) rm have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between theys-fr ,p:)nrj0p smyvc*v.qj )m.m) wm?

  A 1.0-C charge is 15 m from a sec:lh,h lxu ;:bgond charge, and the force between them is 1.0 N. What is the magnitude of the;hl:l,h bu:gx second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they6sdbc 2n06gg -0zv5 nbtmm -zs?

  The force between a (lyu4z f suc8-( gn5so$30 \; mC$ 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 force7szxnh 9dtksp 9ei-2mg1v5 .y. If they are moved to a new syvn2z. m9e9tih-k7g15p xsd separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.i eu.-oe lb:0f09*azxh8deu kpu/e- t0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and t:i eoub 0a0khe-u *dz/9.tep-xu8eflhe 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 x-axis. A charge of +2bk(ewm jo1k m8/0m,dpli97sz:(ra i-nwk fn (.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 on the c0ds(mr/-i1j(zmk :iw,kln8f n(abo w79kpme harge at the origin?

  Three point charges are located at the followin* rv) y epjsmidj/0;6mg 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 force on the 3.0mpj;v6 ye/ 0j)dm ris*0-mC charge?

  A point charge of +Q is placed at thw3fnqnzpl+,h: z s:7 ml5a3yle 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 is the magnitude of the force that acts on the cen+3zh:,: wfpnm 5nzaylq 7ls3lter 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 gfcq b:i58cc: (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the maq bg58:ifcc c:gnitude 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-akjv.s z-u8xyu/zf4 v * wgw+l/ai8z, 0.10 m); Q3 = 5.0 nC is at (0, 0). What-ua/w/jawuy8 z8s -+zifx4 kv l* zvg. is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are/nf:isr 94 fkrkfz3lt-c1 -ki placed at the vertices of an equilateral triangle which measures 30 cm on a side. c 49rflz ki 1rktfi-s-f:/nk3 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.p kq/4v 7mz,bj:3 v ,noorbos;g;j)md At what point, on a line between the two charges, would it be possible to place a charge of -Q such t;:v r gv, z) 4;d37/bokjommoq snjpb,hat the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin anyshd1 qmp q )n.3+s7ux6r5nya5dsms0 d a +9.0-C charge is at x = 4.0 m. Where on the x-axis can arm6u syhdxa5)3npsyq q5n1.0ds m+s7 third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is p+;pt3- 0oaas1z b9k lkifb)ck0ho.ui laced at x = 2a. Where can a third positive charge +q be ps03b -cf)liabi9oo. k1+0zk; u pthka laced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tot /y4 gs gadaur*-85l0dtxgd1yal 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 b-gg :q:it+c lpvp 0z;ny the attraction of a fixed proton some distance above izgvp g:-+0 l;n:ticp qt. How far above the electron is the proton?

  Two 0.20-g metal spheres are hu3i ymun *w)yeuf: sk;w(g6i m.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 between the threisf*(w6:;iy3 gy) n. wkuuem mads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the m(vn 4*y orvb i++mkz e30ukhk6agnitude of the electric field at a distance of 1.0 m from th( h4orb+ k30u y6ev*mnkkv+zi e nucleus?

  What are the magnitude and direction of the electric field at tycpg*xp wb d0 ,o3z-y29q2kx a distance of 1.50 m from a 50.0gb- zdw*9,y ppo0 t3cyx2qkx2 -nC charge?

  A 5.0-C charge is 10 m from a small test charge. What ,mm pbj2m-bzd t*rdmv4/u3 h*0uawuux(1 *y u is the magnitude of the electric field at th,ymadju(0w*d*uzmub bt4r mx 2 v*mp 3hu1u-/ e location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the ekn.wqp- -pt5+a/fu /bbr 8iro+ zzmt-lectr fzt8a/p- t-.-b+irwnbkz/+ qrmoup5ic field?

  A 5.0-C charge is 10 m from a small test charge. What sy (l:pyc0:oqis the magnitude of the force experienced by a 1.00yyol:cp:qs( nC charge placed at the location of the test charge?

  Two point charges each havh bx*d5c1x 7d+d5*mysm-i v mpe a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two i*7xyd cmxp5dvs5 1*dmm-+hb charges?

  A 5.0-mC charge is placed at the 0 cm mark of a m.fvu2-4hq +y2* ycgua ru5pw keter stick and a -4.0 mC charge is placedcy*.vuh-puyk 224+gqf ur 5 wa at the 50 cm 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 meter stick and ad. tq s*0ca/ pf7r(lwh -4.0 mC charge is placed at the 50 cm matr(hs d7w/0f *l apc.qrk. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and l:q9c:xpw :gm- / p tg;vedyz:-7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the zdqemgt/:c v:9gy l: x-p: ;pwpoint midway between them?

  Three 3.0 mC charges are at the thr ke ua3z4+jr6uee corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the c4zre au+kj3 6uenter of the square.

  Consider a square which is 1.0 m o--i 4a;pjdyk /gjt t0. tnv z1ilxd:e0n a side. Charges are placed at the corners of tdd1 peii-x jg/ lvjz0t nt40 .;-:kaythe 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 wheg2+ +ba ul;ghen it is placed in a uniform electric field. What is the magnitudh+b ;lg+ gaue2e of this electric field?

  A particle with a charge of 4.0 mC has a mass of nd -zjd6sbip/40zv/xl +8z5 e63ejw tmtn-yu$5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed in) -ib,xdbh jr(f6k 2jd an electric field of 6000 N/C pointing downward. What charge must be placed on the bjjfh )-,i2(rdb6bdkxall for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Thek0 flng0* gsn06hc js8 ball is placed inside a uniform electric field, and is suspended against the force of gravihl j 0sk*n08gsfcg60nty. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of fs+)z-qpr - zsbxa16w6u, siv ;nx.k dwodx-/+2.0 mC. What is the magnitude of the eleu;s z-dn +r/,b-ik-xvspzx d. sw6a fq w)61xoctric 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 x4 g3coh6yils* d-ay8the electric field 6.0 cm from the cente3 l6ya- ois d8x*hyg4cr of the sphere?