State the law of conservation of exfgjm y6z+ x(h8op s0.ddx.zmd0e :u- lectric charge.

  Is it possible for two negative charges:47v ei3m4swxzryyb5 to attract each other?

  Is it possible for a positive and a 9orm(+manei;l ll q;5negative charge to attract each other?

  A glass rod is rubbed with a psi7 /dli/wo:oi yaowy (zgn.b bu):;.iece of silk. During the process the glass rod acquires a positive charge and tna;w sdy.y /zu w./: bigooib:7( io)lhe silk

  A proton carries a

  The model of the atom shows iwv8u dg,q-ah4vsx 1 8a

  A neutral atom always 3cm82ve x-elj qmw od4,6xzo+ has

  An atom has more electrons than protons. dep yt8 hwccj-58ze6ki/o3w *tr/;um The atom is

  Materials in which the electrons are bound very tightly to the nuclei w /a k)0ra3v; tzix7op/m)qoaare referred op0)va / 3)7 /iqztma;wkoxrato as

  Materials in which the electrons are bound very loosely to the nuclei anfro6ha(3ju8 g. /o8i w/kc gjcd can move about freely within the material are refeuw/ g3 jfi (ogrc /6k8h8.jcoarred to as

  A negatively chargedna cm1z rxyi5s(1(zk 6j0r3h c rod is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod wi 6c1ki1zsxhrzr(0 jmn35 ac(y ll be charged

  Sphere A carries a net positive charge, and sphere B is hv sw;+fd +u1xmm) +voneutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. hox)v;+s md+m1+uv wf Which statement is correct?

  How can a negatively charged rod charge an electroscope positivvs546 (app8erw0k*ihf juuk) ely?

  An originally neutral electro ,ry2/yfa+y azaqr0l7scope is briefly touched with a positively charged glass rod. The electrosco,azr7qa/yyf 0 alr+2ype

  An originally neutral electroscoi4 o8zny8k eq:pe is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electkn o e8y48qz:iroscope

  A positive object touches a neutral electroscope, and the /ga lnb7t7h h hi63v6wleaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to h hhagw6iv/nlt7 b7 63the leaves?

  A large negatively charged object is placed on an insulated tabl9lwv lv0n. cmmj /2xxr3xie/3e. A neutral metallic ball rolls straight toward the object, but stops bv/2jx lim3e3.9v0/mxxnw lrc efore 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 ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constant)* rn+ujk3 wajp19rnr $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge iko7- tqw(clcdb d68x3jy r).ys larger in magnitude than the soqj3r-k (bct.y6 7 dxwcd8 ly)econd charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed jcij(xe . 3;nh g+j*nhnear each other on an ixh;ejg3i.*jcnh + jn(nsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each oth0*qcqwf b2fwkl 0 x9:l.b:bxwer with a certain force. If the charges on both objects are doubled with no change in separationx cqqwx::w.2f 0 b9lfb kb*0wl, the force between them

  Two charges are separated by a distance d and exert mutual attractive v2 (d:puatc(yforces of F on each other. If the charges are separated by a distance of d/3, what are tud( pa(2vyc: the new mutual forces?

  Two charged objects attract each other with a force F. z c3ae gn jcwn43i3::;yp* fq: d qzff+bn)0bb 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-fourth its original val3 qfaqp:)* :ig0 bce+:b3z4ny b3nnz;df wcjfue? The force is now equal to

  An electron and a proton are separated by a distance of 1.0m1 wy:)pv .ffo m. What happens to the magnitude of the force on the proton if a second electron is placed nef p ).mo:fyw1vxt to the first electron?

  An electron and a proton are separated by a distance of i8a iim di*wk/6 r-oi01.0 m. What happens to the magnitude of the force on the first electron if a second el d*rmaki 6i0 oi-8/wiiectron is placed next to the proton?

  An electron and a proton are separat+4gf ,mz46jgnwnqs:v /k-4kph +sh sw.ln st3 ed by a distance of 1.0 m. What happens to the size of tmh,g jswnh-sz+wsqkp4/t4f lvk4:6 s 3 n+.n ghe force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placef:nlda b iq,:2d at the center of a square. 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 thf:n2:aq, idlbe 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 a;dm2;or: l-5zef hcjot the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electro2oe;5dc:ljm-;o fr zh static 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 no-2 i6mk5 kj0ccm3sg :e /kofoot a vector?

  At twice the distance from a point charge, the h26i g/o89 x+eskncvp 2ajql5 strength of the electric field

  Is it possible to have a zero electric field value between a negativ: tfy g90bu5uge and positive charge along 5g fyg0bt u:9uthe line joining the two charges?

  Is it possible to have a zero electric field v6akjnroz.(m i hf7 h6).6dlpsalue between two positive charges along the lj7hak os(df 6 hmlz6)rnip .6.ine joining the two charges?

  Electric field lines near psitive point chargew x1jblf74h3f s

  The electric field shscx (c jqi9:l:8ju0r4:pzo olown

  Can electric field lines intersectz6mbo 7miv5os x, 0(no in free space?

  A solid block of metal in electrostatic equilibrium is piyij 1+7f:ggl khyf,8laced in a uniform electric 1lf+ jf7yi,g:hygk i8 field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each m98x/-sgs we g bnz6ogm2.ef, given the same charge, the electric x mgb826we -ze. m/9g,gsosnffield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a reg-+x5 ouq0flxmd)b mlt3lz; (n ion where a uniform electrilq(0+z5lto ;f3lnm x-udx) mbc field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriudf a/eqz4;m -i2oemdoi/ (/ fum near an electric charge

  A positive point charge is enclosed0zo 2xy.ounl p .(3jggf*f-ro in a hollow metallic sphere that is grounded. As compared to the case w3.gu.2* lpyfjfn0 xr(ozg -ooithout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors 9biu, zjdl2n/i6zh: vin static equilibrium.

State Gauss's law.

  The charge carried by ocb.(g l/4v rtone 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 a net charge of +2.00 mC)6;ei /ob9br;xgfqzj:t, xoi. How many more protons than electrons do;z g ;xrt6 boq ii:j/9x,b)efoes this piece of plastic have?

  What is the charge on 1 kg of protd z zsh*h8slv2ppoy4i- uv5qu,b8:;m 1suof - ons?

  An atomic nucleus ha2d:+)7 cche cr 9ahsa;w-mupa s a charge 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, have charge values of 2.0 and -4.0 mCxd6pg;hsd - g:wi:zh *, respectively. What is the pzids:xh6-:wh*; d ggmagnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0gksf-yad0g y 99,u qv5 N. What is the ma5 k sdgfqu ,99-v0gyyagnitude of the second charge?

  Two 1.0-C charges have a force between kz 8rz4vu g ksw-)h-y rdz n0+h+kkt17them of 1.0 N. How far apart are they?

  The force between a , k1a)xf4eozc$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exdzi .:)5klyh xperience a 1.0-N force. If they are moved to a new se.:i5xh)dykzl paration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firsp4h drod( (ag.t 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 origin4.d(doa hr gp(?

  Three point charges are placed on the x-axis. A charge of +2.0 mCv uu 3.hf1yl (,cs*edc c2)agl is placed at the origin, -2.0 m C to the right at x f svyu2 *13l(elud hc,ca.c g)= 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 charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 kt46 ivt.w 733 gsm1i 3ac a(ugx,zbzlmC 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 the3 v3z4atsi6g.xkm ziu(cb,37at 1 lw g 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a +-*f6u4v9kzzozb mtu / y3b busecond point charge of -Q is placed at the upper-left corner. It is observed thaybo m-+uu/b3zu 4tzbvfz6*9kt 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?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0 jopavsv-zq 2 /o7l3h*, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net forcev phq*ov2 3-/lsojaz7 on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m,gs)715oz(zdrj ,bof d 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the dire 75(, dgf) jdzo1sbzorction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertice bj1c ft8ll1s5ri/wt7s of an equilateral triangle which mesb7iwll1fc/5 1 ttr8 jasures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q anyy0 q pv)t51uwd +4Q, which are separated by 3.0 m. At what pointp0t51 v)wyy uq, on 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 thxwd lq( )+hx7 ec9r8;hbux*o/5rzxl pe 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 on itoh p 7/x5c9 ;zld)*uxx+l( 8rhbe xqrw is zero?

  Charge +2q is placed at ) kak6miwg7ouynuan,*y r /5)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 k 6r)k aogmuy5w ni*u)7ya /,nis zero?

  A copper penny has a k/xsqa+h l.h8h5yp/y/w7 65evlrj9pqw 5 a mjmass of 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 aga a47yp5 nuct;einst the force of gravity by the attraction of a fixed proton some distancn7u 5at;c4peye above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hunguuk8 aq+7pta,+jnr w2 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 qnu +awp8k,tu +rj2a 7the 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 magnitj (y1grf);rztude of the electric field at a di;rt gj(r zyf)1stance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a xmc ecd/xl:(1distance of 1.50 m frome: dclc/xm x(1 a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small tesxmz27(g3o;-( lwnqtl, br /m m1qlhgtt charge. What is the magnitude of the electric field atlmz(o r qbwmmx q23,1;t 7ln-/ lgg(ht the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of td)g jpun1-wyz*i/be 3 he elecn1)dzu*3- w igpyej /btric field?

  A 5.0-C charge is 10 ee 394wsdcts9 m from a small test charge. What is the magnitude of the force experienced by a 1.0 4cw9s es3t9e dnC charge placed at the location of the test charge?

  Two point charges each have kzay2 + b0+ sfow,z/xia value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway betweeny w/fa, z i2b0o+z+xks the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC t, 2vf1czvc)e charge is placec ,et2zcvvf1)d 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 3c*fej8p0 j f:t/mxyzof a meter stick and a -4.0 mC charge is placed at the 50 cm mark. :t03xze/8jp f *yj fcmAt 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 = 0 and x9 c-b*m bw/8; 2 geqwgfrftg3x = 0.20 m. What is the magnitude of the electric field at the point midway berw8x/be3*2fctm9 b wfg-gqg; tween them?

  Three 3.0 mC charges are at thei02 a;n1ak5.(c echrqhs/*/ hgsws qc 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 centeas g ce10;h ih *rs52akwqhcq/(c/n.sr of the square.

  Consider a square which is 1.0 m on a side. Charges are pl;f 9-ktib m,lqib*n 8jw,l(zcaced at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mc9b,*zlmi8 kq(j l wbni;tf ,-C 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 when iv wo1*qxtc rdiw :7uw.6op7( gt is placed in a uniform electric field. What is the magnitude o6ov.wrud 7 1*(wwq co:7pigxtf this electric field?

  A particle with a charge of 4.0 mC has a masr+5tz/iqmi0nmf5v1t0 t2y pfs 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 electric0cb*i54 h ybsd(y10ckzb vjx. field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be susp1 sk*vc 54hbz0jbx(y.0iby dcended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed i 6 79/llmqddbs .jy1rlsxb 4x2nside a uniform electric field, and is suspended against b ym69lsjl1l/dxdx b72 .4sq rthe force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0: ni vh1su (pxc+ lqc5ti,sp3) mC. What is the magnitude of the electric field 5.0 cm from the sphere's sut3q c +,5vx pc )(si:psh1nulirface?

  A metal sphere of radius 2.0 cm carriew9br4cdt 6/u heu9a ,rs a charge of 3.0 mC. What is the electric field 6.0 cm from the center r 9r9/h, cutbw4ueda6of the sphere?