State the law of conservati exdn 9 r0zc6yj+t;mweos8(b+ on of electric charge.

  Is it possible for two negative charges 3noldrz.sinz:-p ; y .to attract each other?

  Is it possible for a positive and a negative charge to attract eo we6ndln a4*4lt/is7 ach other?

  A glass rod is rubbed with a piece of silk. During thew b.jb)wd6ri 7y(b-+v7xpfljnif 2 0p process the glass rod acquires a positive charge and t2fw x.7pn yfl6drp 70v+b(b iibj- wj)he silk

  A proton carries a

  The model of the atom s0 :./ wxbiiqqz+iz +hshows a

  A neutral atom always ha :qt ;b( x7t2uwmpd+wzs

  An atom has more electrons than proto)7ma 0m lqo(q0qgvi6h ns. The atom is

  Materials in which the electrons a b8p q,bjp;g0 pw3dpr1re bound very tightly to the nuclei are referred twp;jb pg,1pd 8qbpr03o as

  Materials in which the electrons are bound very loosely to t5 ( e*)egn0 dya bbh,kz(babj(he nuclei and can move aboutyj (be a5b,(0ha)nkgzd( be* b freely within the material are referred to as

  A negatively charged rod is brought near one end of a sfyh:v((k(7 y2 gkty+ gu2iazn uncharged metal bar. The end of the mt2z7:h2i( (ya vysy +ug(f kgketal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphe ee( tf41(ihbw; ah7gere B is neutral. They are placed near each other on an insulated table. Spwbg;ehf7 ti1aeh4( (ehere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope pos4lxz 98s/k2ccu zik:b w31m o,hmwp3vitively?

  An originally neutral electroscope is briefly touched wiqkug8+zf;)/ gvu3 ;d dnm)njs th a positively charged )vu n; 3jmgqn sd8z;/)guk +fdglass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively charg)h+9+h u2fokz 9 ymd1g*/fkibgc h1tted glass rod is held near it. Afte2f/k1y+hct9o gzih h bguk*d9t m1+f) r the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves se8/+cz4sg l8rqdminmg me5: 3 bparate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the mqc8izbrsg 4m3+ m 5d8e/g:n lleaves?

  A large negatively charged object is placed on an insulated table. A4sdj0b10k 8zxnt .2ewy xs kky1rk8-g.ldd+ c 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 first ball, and stops. The first ball rolls forward, but does not touch the negative object. At no-s 1t b kdk4 0 .k8sj8d1rkc+dx 02w.xlnygzey 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 c4pb68fz ri4lw.g k 1vwonstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distan tj; 1;yud2zvn7qo7f 01 sfxrhce d. The first charge is larger in magnitude than txo yz j11vuqs7tdfr;;hn27 f0 he second charge.

  Sphere A carries a net charge and sphere B 4hd k 6zl)cgh)is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force betweeghkc)l) h 6zd4n them?

  Two charged objects attract4kz2 c)qg .esxkkp4 .g each other with a certain force. If the charges on both objects are doubled with no change in separation, the fokg kxq pkzc.e42 )s4g.rce between them

  Two charges are separated by a distance d ancermf .4+.uubu;1c7:y hg vhwd exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, uc +17;f4.hrmvwhu:c gyu.b ewhat are the new mutual forces?

  Two charged objects attract each other with a force F. What happens tom 0ulsf e3alc xn76x,, the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers issl3 m0 fe,x6xl,an7uc 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 happens to uw eyo8:p66 ifzloy( +the magnitude of the force on the proton if a second electron is placed next to the first electron?ey6lo o+(6:izw8ypfu

  An electron and a proton are separated by a distance of 1.0 m. W,dd(c u60k gvshat happens to the ma0gs6dc(u kvd,gnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distanceqy 3,j 7t 8zkl/gyexq7ujcjgv67))ga of 1.0 m. What happens to the size of the force on the proton if /7ag7,yz 68gjg v)jkxj3)ult7ye qqcthe electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placzsgvb jw/(c4,f l t03rzn6ech 3eo;0aed 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 v 0se3r(3gfl0h wtcj,/o64eanc ;bz z 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 of an equilateral triangle. Wh)ettx+;n 4hhlvmw5cs 5 hg(xp xj/; s5en 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 one of the other vlxhm ght5)s;;t5vcx j4ne+/pxsh(5 w ertices?

  Which of the following is not kcu5(1 (tvzz 9pc*xk ya vector?

  At twice the distance from a point charge, the strength of the electrif vjo:f3bh:df3 h5r 6qebh8n6c field

  Is it possible to ha.ydhivj(9 q(o ve a zero electric field value between a negative and positive charge along theqd.v(i hjo( 9y line joining the two charges?

  Is it possible to have a zech3ziy;vw+9n ovtcn k kyg) 85g t4;d:ro electric field value between two positive charges along the line joining the twownyt84y+;:o9t 5cvck; kigzn3 hv d )g charges?

  Electric field lines near psitidzi.3 (lm/i zrve point charges

  The electric field sh-t:nsy3 lh 2wklvh6d0l-bq4tp b5 k:wown

  Can electric field lines intersect 9o2n*zzxdv t)in free space?

  A solid block of metal in electrostatic equilibriu(0p65 *pmzj s ewggs;um is placed in a uniform electric field. Give a statement concerning the electric field in the bl szp65wjesp;m (0g *ugock's interior.

  If a solid metal sphere and ekyr:tb xuks )+rz078a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center a8bks ek+): tuyzr xr70nd the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform dbv/ -br).wkgelectric field is directed straight upward. What can be said concerning the chak vd b/).wbgr-rge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electricf 2tfhbv51y 5jpe. d8z charge

  A positive point charge is enclosed in a hollow metallk -g0 nsr2uh ct(3n(wpic sphere that is grounded. As compared to the c3wcptnk rn (s-(0u 2hgase without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static6 )u zut,+f0jju2x phb equilibrium.

State Gauss's law.

  The charge carried by onela.k- c*xz8 f,j44jgm:lffzs 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. How many more protons**+zit2gja m :ry n/ fjg6+fbw than electrons does this piece of plastic havgb*yj/* i j+6 gt2a+fmwf rz:ne?

  What is the charge on 1 kg ofa50ph(.giv + bpfyb)k protons?

  An atomic nucleus has a chargc.*ijqp q l c47po3inbi-4vz:xnzwo4 i t6m( +e of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separaten0w*y(*8llkl4/ylk e j0 0xx6jk ozxd d by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forcel/ jxw6e*yykzklo0 04lnjkl x0 x*( 8d between them?

  A 1.0-C charge is 15 m from a second charge, and the force between thf894wh.u6cxt 7peafgunu*o iz k ::8 qem is 1.0 N. Whaho9uqc uxnw48 utff 6 a :*:gp7.kezi8t is the magnitude of the second charge?

  Two 1.0-C charges have a forcexfa:i0wx2*fp+-zlr jl :(l wc between them of 1.0 N. How far apart are they?

  The force between a u mtbi;wjd1x)m-8 c ye,kfx 1;$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, l;w n- 1xoh/ufexperience a 1.0-N force. If they are moved to a new seu wnfh ;-x/l1oparation 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. 7zj : ( eh/kepfr*z0*e+ilaqbThe 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 magnit (je+hbzk7 /frpe e *0zlq:*aiude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placedtcpe3w- (6 yxfp3ozpth- n c/) on the x-axis. A 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 direction of the electrostepchn-op/(t w3t3p-xfz c6 )yatic force which acts on the charge at the origin?

  Three point charges are located at the followiwnch w1w2wj ;8ng positions: Q1 = 2.00 mC at x = 1.00 m; Q2 hwww1 n2 j8w;c= 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q ira2z 6t -tg 2ws0gii6us 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 6u 60 arti ig-stg2w2zthe 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,jzcnx(:ob*6wrj u41 f 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 rxjzf c4j*u:1ow( b6nnC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2p00euq(wpv(m t5q/bu0 sba u 3 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the0v05u0t m sp(uebb3uqpwq /a( net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equibqt5 ubt96y pa(**v nilateral triangle which measures 30 cm on a side. What is the magnitude of the btnba5u*6pyiv9* ( qt electrostatic force which acts on any one of the charges?

  Consider point charges of +Q andw) z.0nkc2b cjk9l4yr +4Q, which are 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 force acting on it would w rylz4k)c n2.c09bjk be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 8 f07nnnkin/ym. Where on the x-axis can a third charge be placed so the neti 8yknf nn/70n force on it is zero?

  Charge +2q is placed at the origin and c)bnyoi(, m-ap; 1igy px4vg8mharge -q is placed at x = 2a. Where can a third positive charge +n iyg-v1bxipa m, mg ;o(4py8)q be placed so that the force on it is zero?

  A copper penny has a mass of 3m54m)d kafbtn ;.ciq3o )ii f(.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 the attractiow,4xy 6wsvqq*+jra6 f n of a fixed proton4rwyxs6*wjqqa v6+, f some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threaabu( r6 ker.4hds which are 30 cm long. e .rhbr kua6(4 Both are given 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. plw5 rk9*m 5+yg wcjh7 What is the magnitude of the electric field at a dim59+ hkrg57 wcl*ypjwstance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a jwyn-:1;te(e aigea5 oc*6g ddistance of 1.50 m from a 50.0-nC j cig -e(eg:n5w1aeayt d*6;o charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of t,pproxa *chmc +j 6o,x6p, e6che electric field at the location of the test charge*xcrc h,oopj6m , pepcx+6, a6?

  A 5.0-C charge is 10 m from a small test charge. What is aszgbqb:n 48,8 qoymw, 0zw d:the direction of the e 8w8 bqq,:an0 mzsdz,w boyg:4lectric field?

  A 5.0-C charge is 10 m from a smarw s/j8z b1/rsll test charge. What is the magnitude of the force expersjsrzw1/ /b 8rienced 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 are separated by a dista4 fq*/vxlpq ij;w ( ijjpv-d5)nce of 4.0 m. What is the electric field at a point qqj/jpfix(;d )jpvli4* w- 5vmidway between the two charges?

  A 5.0-mC charge is plffd;ehb0nv)4 aced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cd n0hb )4ff;vem 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 a -4.0 mC charg9z(kwj. xnp qe z/rfvu15g8(xe is placed at the 50 cm mark. At what point on a line joining the two charges is the nq f z (/urp5.ex(9k8vz1 wjxgelectric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 et eo:dtd-7y e3eqf .k18 cve t71p:stand x = 0.20 m. What is the magnitude of the electric field at the e e-vddot11qsef.7c t:ptty 78ek:3 e point midway between them?

  Three 3.0 mC charges are at the threevv.d w y(d w:ua5y1lp0 corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the ele0vwu pd da1ywvyl5: .(ctric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at tmez zik) 6()u+4fbve f.pfy 8jhe corners of the square as follows:4 ek .(emffyujv +6)b)ziz 8fp +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 whenqce )tyj(q54kv4p 6b5yhu6 r f it is placed in a uniform electric field. What is the magnitude of this elec4pv treu65k yf56cj4b)qhy(q tric field?

  A particle with a charge of 49hi-ecl:lxqz qre- ) w/sk-b2.0 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 0.120sj4f :s8xwfo2 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placo 8 fwx4:sf2sjed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.lcgqsr-69iv0a d x82 o00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravitylv6cr0 i soqag29xd-8. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. 4 l6)77 zb3ivjtoesdb What is the magnitude of the electric field 5.0 cm from the sphbot76dliz v3be 4) 7jsere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electinlpbnt7uen7*rr3++5d( -pyq d2 d cdric field 6.0 cm from the cqdd lr7u7b3nny e+t* (p d+5-ri2npdcenter of the sphere?