State the law of conservation of electric g-,7:gdrhgm ocharge.

  Is it possible for two negative charges to a7z:o zok yya qs+c a3k e;oqltv-lu)f :c))0;ettract each other?

  Is it possible for a positive and a negative charg 9dzny;ym8x 0se to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass r1wf;7jcgj4kxzj x3 x ,g ++imood acquires a positf7wg1 z+m xo +;jj,ci4gjk x3xive charge and the silk

  A proton carries a

  The model of the atom shows v.c9+2yzc e,c edfnp0a

  A neutral atom always hasd x9yzajn.qg2s2- 3 tq

  An atom has more electrons ih )n6xmu1gl3jf -7 ukthan protons. The atom is

  Materials in which the ele6,o,bq s 7+ps)w o:woemeb*l;c q gld1ctrons are bound very tightly to the nuclei are referred t1 )oqdec;+:bose, lq, m7obg w*wlps6o as

  Materials in which the ex.dt/b 3s0uh0 1unmyqlectrons are bound very loosely to the nuclei and can move about freely within the material are referq1 /yhub0nsd3 xu0.t mred to as

  A negatively charged rod is brou49ysjbzg 7p1t.,i2paleo7 ktght near one end of an uncharged metal bar. The end of the metal bar fart. tp,p2zsigo 7bkjyl7 a41te9hest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutrm 6lpp 5f4ngc6al. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Whi 6f6ngmc5 l4ppch statement is correct?

  How can a negatively charged rod ck e.t u1s3) p:i tdbt 2e0z-+dl-pnkcpharge an electroscope positively?

  An originally neutral electroscope is briefly touched lnu (1du,fy( i7g8rn (6jykbywith a positively charged glass rod. The elec6 (8kb7(yf1dg l ynyuji,(nurtroscope

  An originally neutral electroscope is grounded briefly while a positiveqczgv5as+g7 av9 1t9 jly charged gl5vqztsg+1 aj9c9vg a7 ass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leq9dws(*2f wk ysvn8k;/,gleb aves separate. Then a negative object is brought near the electroscopeflbkq*vs gy(8;ks,2w 9e/wnd, but does not touch it. What happens to the leaves?

  A large negatively chaqy.yhpx, 8n9grged object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before ih,xgq p9y n8.yt 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 thexw9 46nth y,hs Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. e :0hx;h il+ck The first charge is larger in magnitudeie:kh+c h0; lx than the second charge.

  Sphere A carries a net charge and sphere B is neutrjn8 n2/llzrgv ms 5)(ral. They are placed near each ot5(/8nr 2sm)glzlr vjn her on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each ot6 i)wtrm(m x+mher with a certain force. If the charges on both objects are doubled with no change in separitmm+)6xwm ( ration, the force between them

  Two charges are separa6ttddq*mdl j3-144x8 v x+asgjb s-kwr*h8dw ted by a distance d and exert mutual attractive forces of F on each oqtjm w-3lxtwh k* 8dj*1+ dsv6xgdsr4-8dba4ther. 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 happens to +z8kf9 h2jjkn/2h2iwgdh3 n pthe 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 value? ng2h8j3d9+k2wp izk2n h/hj f The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What hant ;-l jzq bvryv5)a+0;cq1tq ppens to the magnitude of the force on the proton51 0by qqlz ;ca)jvvttq- +;rn if a second electron is placed next to the first electron?

  An electron and a proton are separated balpf g)yq+k dn*lj206y a distance of 1.0 m. What happens to the magnitude of the force on the f0alnj )qpgfyd62+l k*irst electron if a second electron is placed next to the proton?

  An electron and a proli/ ,b5i67w m r smtj dlbg8,44uw6vqdton are separated 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 closer to the prv6i8/,i4jrd7ud mbqtl5b64 l,mw gw s oton?

  A point charge of +Q i*:ex :mlk7qde/ca /h3,gi utcs placed at the center of a square. When a second point charge of -Q iulce*xim e ,t/k/ : q:dgc3h7as 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 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 t.3h6k3 tgz zc+yiz8 ybhe centroid 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 magnit6t+kc zig3zyy83bh z. ude 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 ve2 0phoao;a qdm(zrbhbuiq2+,, ys q8xdj .a()ctor?

  At twice the distance from a point charge, the fvxwmo//v9a lch.2 4wstrength of the electric field

  Is it possible to have a zero electric field value between a negative and pojam.; grwp3p:* :wxs msitive charge along the l:r jga p3mwxsm:p;w .*ine joining the two charges?

  Is it possible to have a zero electri wu-5mauw .fk9c field value between two positive charges along ku9m fwa5-.w uthe line joining the two charges?

  Electric field lines near psitive poiplhca +:jyw ( uj;2et;nt charges

  The electric field s 7jtcq1g g9uh h1lt k910l/nkthown

  Can electric field li6 svi )oo/ug:ines intersect in free space?

  A solid block of metal in electrostatic equili*h5b+dntv-k ghnj9ac+ /.w fjbrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's idf jj+wbn.-/ckn9tgvah+h *5 nterior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gigv9ne4t/d w:sd g1msu 45;ivl ven the same charge, the electric field (E) midway between the center and the surface i5gtvu d4 m :g;le/swv 4is9d1ns

  A cubic block of aluminum rests on a wooden table in a region where a uniform e c;cpceb3s7-k q-f3lakp7-*yf uqcx 7)lu8gr lectric field isx 8c-kpl*g7- cpyec kb3q-l37 acuf fq)ru;7s directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium e ;1w9/8tmohmhod r1 gnear an electric charge

  A positive point charge is enclosed in a hollow metallcl-2zpo c9uy 2ic sphere that is grounded. As compared to the case without the hollow sphere, the electric fcpy-l2zu 9 2coield at a point directly above the hollow sphere has

State three properties of conductors in sta( rq-9tf(nvq 6ifqenof ;u 56ccl(i+ttic equilibrium.

State Gauss's law.

  The charge carried by onev;-* jc oll.xkkd,(qq 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 has 42ajwewl;-m6kvxii 0 a net charge of +2.00 mC. How many more protons than electrons does this piece of plastic hav6iv02j x4-mi;we alk we?

  What is the charge on 1 kg of proton3l g 7m(5dc8cm zqjv74vxjs *zs?

  An atomic nucleus has a charge of 5j )ya8nr3):erswer l $+40e$. 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 charge values of 2.0txs:2tw,er (1slc1ejxt i6)ncq9hw . and -4.0 mC, respectively. What is the magnitude of iel tx:6sw qxj2h .,91(s)1wr ttc ncethe electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force ei10j*gxi(z kbetween them is 1.0 N. What is the magnit(kg0xi *i1zje ude of the second charge?

  Two 1.0-C charges have a force v iw 7p8twn/n zlhl(7(between them of 1.0 N. How far apart are they?

  The force between a e(l bneu *va1-h7l5 iv$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart*zdy0 cn1iid;, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, whi*nc d1 ;zi0ydat is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis.el.g t.r4 ik:n The first charge is at the origin, th:.t4 k.nlre ige 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 origin?

  Three point charges are placed on the x-axis. A charge o,k+rv)r, 0ffl f.spa hf +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 andv )f+.hfpr,,k lafs r0 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 al i6 u 05n:bc*hkom d(-z*wnzx = 1.00 m; Q2 = 3. nk6hma 0znl :**c(zwoubd5i-00 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 cha m2v+ 37u ed(l mg::d6sekvhjzrge of -Q is placed at the upper-left corner. It is observed that an electrostatic for:e jgdd+muv3:s2l67em(hkvzce 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 mq;l tyh)s uk21); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chargq)st2k1yh; u le?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is atc6l16w1v)(mnf a 8/f*mmsztgt qdo o2 (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the di c zams2fng/o*1 wt6m df8 )tlmq6o(1vrection of the net force on the 5.0 nC charge?

  Three identical charges yjrdk e362en5v67wr27y7y2 ryaezw8 hfc jm)of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. Whamd 3yyh 5j2 w6ez67yrwjvr2) yk77aefenr c8 2t is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are z l5xeg-zws ng6p/q2 .pr,kt,separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic folgr./psw6,-pz tzex nq2k5 g,rce acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge( 2a+dc 8vuz3)hkjk5 )5bnvr:dahkqr is at x = 4.0 m. Where on the 5 b+qk8)h:k ja hcnd3kd(ar2 vvr)uz5x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and k p3r.hp (pk4scharge -q is placed at x = 2a. Where can a third positpkk3.4(rshpp ive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of k26 wpn 2azt6j-xjpt4 3.0 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 t,doq*g gm:s p7e*jwt(he attraction of a fixed proton ,qpdeo* t*7w(g:m g jssome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a comm,rqvr , 6rm 2w3umoep fr40nz+on point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion foorzrf w+nvu,m2e p6 0,r3qrm4rces them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has )w;4ii 5ymw 7c;ng.uokrch 3wa charge of +40e. What is the magnitude of the electric field at a distanc;w3o5i)wi.g y kmu 7cn 4crh;we of 1.0 m from the nucleus?

  What are the magnituhjt2/ gn4ho6v )h)xy 5ixd 4gzde and direction of the electric field at a distance of 1.50 m from4oj d v2/h6)xy5thix 4g)ngzh a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of theu*e ojz nu*vdw8 i-.;d electric field aed;.uiujo8*w d vn-* zt the location of the test charge?

  A 5.0-C charge is 10 m from a small test charovr ;o8akc ihv5/bp (y+o:2n mge. What is the direction of the electric fieldn; cipo(5o2m +y8avhrv: /kb o?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of g2 qfkj8v(c p4p.p6 6nvdli:dthe force experienced by a 1.0 nC chqv8kdf( 246jdni v6:gpl.pcp arge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a dist- l65vsafw7im:, yaeyance of 4.0 m. What is the electric field at a poinafv:w6e,l-syy7im a 5t midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of.pnmh.m) *sz:o+svf w a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at tsmh+snpo) fz..m wv: *he 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 m.kjqt( xqx nm3+bv3 f6C charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric fiel6tqmvnqjf k3 bxx3 (.+d zero?

  Two point charges of +3.0 mC and -7.0 mC are placedp*8y ihtnh43 f at x = 0 and x = 0.20 m. What is thei3hhf tpy4 *8n magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a ;(qsh/y(4sx2d vbng 0ibpb*t square of side 0.50 m. The last corner is occupied bys4dqn /(2s0xvb;gtb pb*y ih( a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side.ie ,itzy6e l5ph(c, :twcy-o . Charges are 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 6htzce, :e5,tciipy lw.- y (o(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 placed in a uniform electr.1l*p nb,bkhl dnt0w*r-sab r(0 cv 8dic field. What is the magnitude of tv* l0wb*sr (npabk cb.n,h0r d1-ldt8his electric field?

  A particle with a charge of 4.0 mC f:tz7i(rbulh8 ,t3 cqhas 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 placem0,t*7fh3prx mvhb2m8ue . gdd in an electric field of 6000 N/C pointing downward. What charge mustebt, rm .u0h28 *xgmvdfh 37mp be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g82un) vcc6hq8 nzx(kg carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. Whvzcukgnx828hc (q6n) at are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2 a*6)fwu9vqre ofs )u2.0 mC. What is the magnitude of the electric field 5.0 cm from th f9*fu)woq26) asurve e sphere's surface?

  A metal sphere of radius 2.0 cm carries a chargegipt 2hzo)pl l1,27w0ryc.ob of 3.0 mC. What is the electric field i 2og, ppcyt2)r0 lb.whlz1o76.0 cm from the center of the sphere?