State the law of conservation of elxl/v7e:caa y.v*q4kadwa 9ja79 a8 qcectric charge.

  Is it possible for tworm .2f8.kgvjv negative charges to attract each other?

  Is it possible for a positive and a negaticxa4*g/tbngfrund 8 z0; dkzg hw,8 /(ve charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the proccb--/5- r u h-ij eja8*mahv*wypt ,vpess the glass rod acquires jpa5-uvbhc-j wi y*-*ha-/ ,rvp8emt a positive charge and the silk

  A proton carries a

  The model of the atom zl 5h9/v9kpgxe6w /(r3xrzdjiqz49nh;: baf shows a

  A neutral atom always(5rx )a xb(vrx has

  An atom has more electrons than p1 5xgkge3te j3s p(zak;f.q;urotons. The atom is

  Materials in which the electrons are bound very ti hfgt 63ol3j)xghtly to the nuclei are referred to 3)6 hglfojt3x as

  Materials in which the electrons are bou k z3ktb)7g1eietv,4l nd very loosely to the nuclei and can move about freely witg)kz kee tt4bli,3v17hin the material are referred to as

  A negatively charged rod is brought near one en,kl/rr+)jy xa d of an uncharged metal bar. The end of the metal bar farthest from the charged rrlkj /+a,xry )od will be charged

  Sphere A carries a net positive charge, and sphere B is neuttqt6zl3ne (n7ral. They are placed near each other on an insulated table. Sphere B is briefly touched with a 3nq6ne7tl( z twire that is grounded. Which statement is correct?

  How can a negatively charg39u 0ob6xtt sued rod charge an electroscope positively?

  An originally neutral electroscope is briefly toub+n ,ivgwl dc1yl,/d 3ched with a positively charged glass rod. The electrod d g+3/ivlbywl ,n1c,scope

  An originally neutral electroscu isyp/ ( d +l(g)ycrvi(jcqz vy83*t7ope is grounded briefly while a positively chargedy8 dq7 vcs /ivljz 3c(g pr(i+)y(t*yu glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sepaclaikf;od27 uje vm*+:: jlbi+uy- +hrate. Then a negative object is brought near the electroscloidejy* +:+ 2j;c7hli :uabf+ uvk-m ope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed onl ,di;jt/aox. an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it;dl. o/x tjia, 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 sj4 rthp5 ;l3mx/2r+r6 gzue jthe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thezz;) 0 eyli:su first charge is larger in magnitude than the secoy:i;z0usl) e znd charge.

  Sphere A carries a net charge and sphere B is neutral. They are plamcy-v:7lft o (ced near each other on an insylft:7o cvm (-ulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. /32acgdg d9ae/ s-x yr )lpv;g)bxhm6If the charges on both objectsa2spdcyxrg/m)g 6dbxgv -9 l3 / ae;)h are doubled with no change in separation, the force between them

  Two charges are separated by vxz im;:d34t xk7n3bia distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance id mxb z7:t34vxki;3n of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What r: yhf q sot975*o3pxdhappens to the force between them if one charge is doubled, the other charge is tripled, axor7s *to:y3p95 qfhdnd the separation distance between their centers is reduced 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. What h7(85v copwh9cnozm u8 appens to the magnitude of the force on the proton if a second electron is pcn8zm op hw 7o58cv9(ulaced next to the first electron?

  An electron and a proton are sep7;zq1s oa.co fi:c:wznvq1c - cm ;5ptarated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second el; sc:opn 57fc qomq-1tiz.wz ;:ccv1aectron is placed next to the proton?

  An electron and a proton (/moy hr myy6o/ap*9ware 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 tm p*mw6y / a9yhor/o(yhe proton?

  A point charge of +Q is placed at the center of a squaoi3k hwhin u949.g 4cfre. When a second point charge of -Q is 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 owni9 ku4if49h cg3.h 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 0wl9;r vg i .fjxbe2t.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 magnitude of the force that acts on the center charge due to a third charge of +Q placed at of ;rg.t2i0w9bxj e .lvne of the other vertices?

  Which of the followi(/h g,p8-hon +dprejsng is not a vector?

  At twice the distance from a point charge, the strength of the elee 0nqkmh) )l6 2qpdnbf;)0nbqctric field

  Is it possible to have a zero electric field value between,zs o4x -iafecyg(.p9 a negative and positive charge along the line joining the two chargesif,a e g9x c.p(4-yosz?

  Is it possible to have a zero electric field value between two positive charges*- p zcd+5xkc*8yqows ws c+zdy koc qp*5x8-*along the line joining the two charges?

  Electric field lines near psitive point charg zal :z o)tv,qy59lw;kes

  The electric field shownn( aekmzpv0u. w,7- rap a)p/w

  Can electric field lines inter90sex8p -jqx */ vzp gukv/o;zsect in free space?

  A solid block of metal in zn.9kyenhu u;i4) m4telectrostatic equilibrium is placed in a uniform electric fielztunk)4 yne.ih u9m;4 d. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow hxuqs ;u*)ju .metal sphere of equal diameters are each given the same charge, the electr;hj q)suu .xu*ic field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woodene1s2de l a0d0xv/ new5 table in a region where a uniform electric field is dn wdx vedeal005/1es2 irected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in e qef b/t 5ks ;;+8eymuhc.1mih, 9nwpzlectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow meta.xve98injpc1f2u s 0 illic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point dir8.vsf jcep2i i9n0xu1ectly above the hollow sphere has

State three properties of conductor5tw,3dponbg *s in static equilibrium.

State Gauss's law.

  The charge carried by one electron i7k:b sbv .fw g57byj*ms $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net ch0vnuukxh 9a 3liu-(bl-wu32:(dbii parge of +2.00 mC. How many more protons than electrons does this piece of plastiix0hn w: bu lui vikd(-blap2u- (3u39c have?

  What is the charge on 1 kg of p :aphjr /l.q(7mfc8s3ge,dj yrotons?

  An atomic nucleus has a ch3 .wygnrfo)d34cwx 2xarge 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, ha cu)vv :je/z:zhex e2 8w3j1ijve charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the :v8ec u1xzzh: wje) ve2jj3i/electric force between them?

  A 1.0-C charge is 15 m from a second chargb0dos+ b4jq j)e, and the force between them is 1.0 N. What is jqb o s0d+bj4)the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far ap y8uzwdwda:(o. xp5yv2cgva.8 a1j5 yart are they?

  The force between a e9cx +r5gkuf5 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, i:vss8r9mp i2q5 r kitf3,.f2xvb1 kyt nitially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric5q1:sf .r9v smifk,pt x 3t2rv8yk2bi force between them?

  Three identical point charges of 2.0 mC arjg nu9 hrnb)3bwp59: xe 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 a:nb 3jgxb9rhnp95 uw )t 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. naursjyu4m -6wn3 gag )1q 7;oA 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 directsg43qmnngwur7 y ;)a61a uoj-ion of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = eu)j -tvoch8ogn 0d3cq0.,1kmc :xhh2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0)- h10 ho8un3j:cvx0.t ok, cqgm dech; 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 +Qin/f55 a(f5b nftbl1 gddv9c0 is placed at the 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 th f(fn9tb55n 1vbf0ildc ag/d5e 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, 0.1+op 4grq5p4x 4uqbp m/0 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC c4g/+4m qx 4u5p rpobqpharge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, s ewjelb87fl7u l 0 o(t4-uy8l0.10 m); Q3 = 5.0 nC is at sbwl u74l-j loy( 8e8lteu0f7 (0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed hn)ih3-7f8 egut(rp q at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnfpt7e-nr(h )q g83u hiitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sef, e mb1o-0wywparated 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 fmw-o 0we1by,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 = 4.0 m. s0zue z +a6 5jcorz (o od7a(n;8qe:nw Where on the x-axis can a thir 5 8z(naa6z:;eruoqje o(dwcz+o 7ns0d charge be placed so the net force on it is zero?

  Charge +2q is placed atdxwhxd-e/zjk3 4 tn97 the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zewz k9 tn7ex-dhjdx/43 ro?

  A copper penny has a mass of 3.0 g. ru -2 bu3zv. s-6sr88v dua4ylfyd8yy 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 fi4q qsiu x*v r3rxo71c)xed proton somer3)vux 7sq c*xior1q4 distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by no)q4 gjifhmd* g;,mrm9 nconducting threads which are 30 cm long. Both are g)j*m4mg mfih;d,r 9gqiven identical charges, and the electrostatic repulsion forces them apart 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 magni;r/y9s j)+ dp;nghmu ftude of the electric field at a distance of 1.0 m from thejgm9 r /+hnyup );d;fs nucleus?

  What are the magnitude and direction of the electric field at a di1k tz m*qj7qkb jf;;n,stance of 1.50 m from a 50.0-nC charge?;fqbj nkj;kq m,7 t1*z

  A 5.0-C charge is 10 m from a small test charge. What is tr a.qc+thi7a7he magnitude of the er h a.+t7qcai7lectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small;lod4t1j .8 wpg/mxgs test charge. What is the direction of the electric 418gl;d/gjxws mopt .field?

  A 5.0-C charge is 10 m from a small test charge. What is the s1 6wvx nljxu+ca,/7zmagnitude of the force swcxl+a7u j 1 z/,x6nvexperienced 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 arq5wiu h*q mmu8 rito) n/w.80ge separated by a distance of 4.0 m. What is the electric field at aogrn8uq)w m80h u/t m.5iiw *q point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter p7a*tdeg0 5e vstick and a -4.0 mC charge is placed at the 50 cm m5 e*ae0g7pvd tark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of ag *2zmilntl,xr 2;6 yby/ 8tec meter stick and a -4.0 mC charge is placed at g,et2 z8 lcyb/ly6ixm*nt2r; the 50 cm mark. 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 =/ rrr+bd iu:;kgrz8+c 0 and x = 0.20 m. What is the magnitude of the electric field at the point midwark r/8d:gr +czuirb;+ y between them?

  Three 3.0 mC charges are -5iw ay4+ephaat the three 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 center of the squa4yawp e+h-i5 are.

  Consider a square which k(osh d bx76:8cpc w9zis 1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, x c(:b68w 9phoskdc 7z1); +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 char8 cztp z, mt9a(,s-vs1v6skxmge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fieldkxv, zsvt1ps( , c-9zt8ams6 m?

  A particle with a charge of 4.0 mC has a mass of - pzippxz e,10$5.0 \times 10^{-3} \; kg$. 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 poinlbu2dj /j7e5)cqg-cy ting downward. What charge must be placed on the bal2deq bucj5-7gy) jc/l l for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball iktjjjm-m7 pk6z1 5 8gx;xje q4s placed inside a uniform electric field, and is suspended a7xj- zk ;mk6jjxt81qm5p jeg 4gainst the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a ch8p6o a( d/4yilgpfh od:ck) p9arge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the spherkdpgdlcp6ifa: 4ph9o8(/o y) e's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the eleedvtk p1 t2r7d97*uc ya;atf+qsb5s2 ctric field 6.0 cm from the 5vda1k t y7dqc*sttb9;2f +72aupr secenter of the sphere?