State the law of conservation o 9k7fvcaz++ nff electric charge.

  Is it possible for two negative charges to attup -f43m ff 5+o5:oog*i7m/vm roasznract each other?

  Is it possible for a positive and a negative charge to attract each otherpkyw 3,yc602s 5mc qkj?

  A glass rod is rubbed with a piece of s8hjk ,0mt a1b:sjz; myilk. During the process the glass rod acquires a positive chmy j;azt ,801ks:bjm harge and the silk

  A proton carries a

  The model of the atom show jsceq0a fkuvz -l)hc zt7i9uy42o .(5s a

  A neutral atom always has1*y ts2be*jo,tnl u7b

  An atom has more electrons than protons. Thee:y66lo nxsg c4jlp0ibf2jb ep wj761c7xt3+ atom is

  Materials in which the electrons are bound very tightsj5:g rt do6x9tg.s9s ly to the nuclei are referred toj9tt.gs6 : 9xs5 rdogs as

  Materials in which the electrons are bound very lold6dr* poh/o6 qc11n-te j g yu1pi.;o fv/yt.osely to the nuclei and can move abouth*p1//yvtjn. pygfti6.d co1 qu6-dl; 1 oroe freely within the material are referred to as

  A negatively charged rod is brought near one end of an unch7vz8oy t8us toq3h/,farged metal bar. The end of the metal bar farthest from the charged rod will t3tuh 8oo/s 7yv,q8zfbe charged

  Sphere A carries a net positive charge, and sphererqpt.)5x fvnb7 q4 9gs B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correcgqq 7pvbr.5xn ft 49)st?

  How can a negatively charged rod charge an elecmgcp.c j7q 18n,vjtr 6troscope positively?

  An originally neutral elecjtm1obj51gk, u 8o+jeswe +r 6troscope is briefly touched with a positively charged gla mrjgous6+j5tbk +e1owe 8,1 jss rod. The electroscope

  An originally neutral electroscope is gl9 p.5pxqsiq0 5rvki0 rounded briefly while a positively charged glass rod is held near it. After the glass rod is rem50qqxl s9 .pi5pvkir0oved, the electroscope

  A positive object touches a neutral electro h4a2zyzghct1x 2 mt;9scope, and the leaves separate. Then a negative object is brought near ahg;hxz2my12 z 9t tc4the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on p u(eqk3q0+m /r/axmo an insulated table. A 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. um p(k+qx/qa3o/er m0At 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 Cwy.kfy7ao *f1 oulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are sepyk+x *9h( :ybj( itjhoarated by a distance d. The first charge is larger in magnitude than the second chax9*(y( hkt:jh job iy+rge.

  Sphere A carries a net charge and sphere B is neutral. They are placed neast:etxk34mx-pb6 4ld r each other on an insulated table. Which statement best describes the electrostatic 6kp -4x3x: e4mdstbtlforce between them?

  Two charged objects attract each other with a moxk+4 g k3n:t rd0-rn+d0s efcertain force. If the charges on both objects are doubled with no chankknt+x r 4mdr3 +feons0g d:-0ge in separation, the force between them

  Two charges are separated by a distance d and exert m( ahzd):et9iih /* tqdutual attractive forces of F on each other. If the charges are separated by a distance odqhdt*9 (i)it /hea:zf d/3, what are the new mutual forces?

  Two charged objects at ,x*gem) l5km7u9yuhwtract 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-fourth its original value? The force is now equal t7lgh 9ku)m wx,u*5emy o

  An electron and a proton are separated by a diu (o 4onvu45)/o(kwgi,ikx re gn9fy3stance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is pn4n4 or/ kk9f)g,ey53gx(i (ouiw uovlaced next to the first electron?

  An electron and a proton are separated by a g/5ci;s1md mhs cy9 8vdistance of 1.0 m. What happens to the magnitude of the force on the first electron if a imd h8/m9 cs;5yvcg1ssecond electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happencv0l4 41retc1bfe* wys to the size of the foe4r 4v1fwl*1ec0 ycbtrce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second poin8les saoubuo;mx47 y/ 1,jy;n t 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 the square. What is the magnitude of the net electrostatic force actiny;y /o8 bm;nss7u,l 4ejx1ou ag on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equgx ..8s fe a pj,m57wpwyljd+2ilateral 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 chargel.+ . jyfs,dej8x5wpa7m2w gp of +Q placed at one of the other vertices?

  Which of the following duem*6 nlbbutq+z33 2 is not a vector?

  At twice the distance from azk./rbt:v z 7v point charge, the strength of the electric field

  Is it possible to have a zero electricz+cyuwa434 dtzajp+ i)fv; :n field value between a negative and positive charged4+py fuz a+c4)iwvjt ;z:na 3 along the line joining the two charges?

  Is it possible to have a zero e9 p1.duvlu nvlna. *:glectric field value between two positive charges along the line joi.ulvn:19 n*auv.lg pdning the two charges?

  Electric field lines near 3 k) z-.dpnyk rmk/m+qpsitive point charges

  The electric field shownhgm ;+15xqlk9ow/e;hl- u jqy

  Can electric field lines intersect in freev7lnkj: h676) mpmwbd space?

  A solid block of metal in ei9/f qwj- 1gjslectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric f/jws g-i1f9qjield in the block's interior.

  If a solid metal sphere and a hollow )k0 k0hsxyi5 ej) t +w jdn-btl88fyz9ec-l5xmetal sphere of equal diameters are each given the same charge, the electric kit)n 9xb) lh0x88fced0+ -ltwjes5kyzy j5-field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woodenpt qh,-8- tbcf table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the blo -,t-qpbfht8 cck's top surface?

  If a conductor is in electrostat4hh yt-kugh+4 : gid-tic equilibrium near an electric charge

  A positive point cha xiov4r:fobsac/71 zc -l(36nxm low 8rge is enclosed in a hollow metallic sphere that is grounded. As compared to the case wirf 4zlxb8vo n7 oc16/w(l aim-ocs:x3thout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilqr) nbkz0o 6b6ibrium.

State Gauss's law.

  The charge carried by one elk tck b)y35xf9ectron 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 *o8f;jrbax 67ly po3 tprotons than electrons does thisbl; yr3*8 oa oj6txpf7 piece of plastic have?

  What is the charge on 1 kg of prob( nd* t*5*fgfqxd wd3v,;;fwoxx3 sj tons?

  An atomic nucleus has a chqxvd j- e*h yo4g w6o wk1l4-e9lw5zp*arge 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 char xi z4luzyp.k/dkl 2ae+;+0ux ge values of 2.0 and -4.0 mC, respectively. What is the magn4u ;a/y++0izexzp 2dxk ul. lkitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the forcq4 cp 7x;afy*se between them is 1.0 N. What is the magnicxpa74qf *y;stude of the second charge?

  Two 1.0-C charges have a forcd+ue-us r+btcr3+yv6: hi8m pe between them of 1.0 N. How far apart are they?

  The force between a *qm-lhsf3 es2$30 \; mC$ 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 force. If they arrja i1gg/px/zzau; o 7qbl874e moved to a new separation of 8p/ggq8x1zaa7z/ji ul r47 ;b o.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the xe )uv o8y+iuf.-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is at theu)fyive.+ 8o u 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(g;/e,q: *ev08k opkfnpjmlb -axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the ril*e;mfpq0ngk o 8/v(:b ,kpej ght 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 charge at the origin?

  Three point charges are located at the following ep*wrr:4-ip qqd, dbt;si rh/;4-s oopositions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 =4/sr; d -be4p, qsdoqtr :iiphwr*-;o -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 g;7we07xxolb 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 center charge if xxbo7ewg0 l;7a 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, 0.10gw0jd1o 2xwlzv/q8 h5o,cz p: m); Q3 = 5.0 nC is at (0, 0). wo: ,82o0j/z qc1 hdxgvzpw5lWhat is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 )1uimei c i;o2vku0g 5= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). ;uig1)i0i52 oue cvmk What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mquk5k+jd wt;rt1 ;(kjf3f )hdC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force +;j(t 1f5dwtuhd)jr3kk f;kqwhich acts on any one of the charges?

  Consider point charges of +Q and +4Q, ww,sn+t:c (g rjuvgb.ly2f)i2 hich 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 electrsvjby :r c t.2wl)u(,f2ng+ig ostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is a3j c rds le8*8h;vg6abt x = 4.0 m. Where on the * 8hre 8clab;djv gs36x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -qcccgs5+ l-o 2s+u3hi /8rmue f is placed at x = 2a. Where can a thiri chm+8gr/cc u-u+3 e52fslosd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. cl805 rhv;rn;rf xrc( 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 gc 0gpw 3*c38t aml4gyjravity by the attraction of a fixed proton some distance above it. How far above the electron is the pryt 4pcm 83 lgg0c3jaw*oton?

  Two 0.20-g metal spheres arenrtnb: m,l )r: hung from a common point by nonconducting threads which are 30 cm long. r,n:b tl:)rn m 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. What is the magnitujqze: 9la7, atde of the electric field at a distance of 1.0 m from the ,a7tl9e:zq ajnucleus?

  What are the magnitude and direction of the electric field at a distance ve. r,x85sk;cmt( zy.dllew3, rm0vvof 1.50 m from a .klv 3vc x,.w,zsrtmmlre (; v8ye50d50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the bue/1zjrked /vy:7 2kmagnitude of the electric fielkezbjdeku/1y:27 v/ r d at the location of the test charge?

  A 5.0-C charge is 10 m from a :7v0 yjcb+khq 31wude9wejz 9small test charge. What is the direction of the electr:9b ek9u 0hewy zdvjj+3w7c1 qic field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude)m j8ucnnv- a5 u*; wyh1r-yod of the force eyjy)nh our*u;m 8anv-d -15wcxperienced 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 6 5ur 9d zry3oqf9 z82b6xxlgha distance of 4.0 m. What is thex8 zxdq6 3g2zulbh5 r 69froy9 electric field at a point midway between the two charges?

  A 5.0-mC charge is pla.k9fyqu+gbfj y(x 6 j6ced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm bj69f6(+uk yqjxfy.gmark?

  A 5.0-mC charge is placed at the 0 cmx ohtu)/:b3kd qyid+n9 5 .ysb mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a li.o:d ys/k59t di +by)qnb h3xune 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 x = 0.20 m. Wh:eukl1q q1a 0rat is the magnitude lquq0:1r1eak of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. ey4fuacyh5;p ni k x3;zi(3b; The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squareixaie 3y ;y ;(unh34 ckb;z5pf.

  Consider a square which is 1.0 m on a side. Charges are placed at the corner4dg.sz( 9dy+ ej0ounhs of the 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 at4 euds(j+oyz hd09 .gn the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a unzl;6gvykx kw1 o9d;5c iform electric field. What is the magnitude of this electric f xyz9k;6g cw 51o;kvldield?

  A particle with a charg0 k4r;vz hisnk9 cf6m0e of 4.0 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 0.120 g is placed in an hn;m 0 (c1p+unyo)v nfn()tyn6wut5gelectric field of 6000 N/C pointing downward. What charge must be placed on the ball cwp5uof n nt m+ty)ng( v6u1)n;hy( 0nfor it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed it)l1wp(idou t))p0n 4jff4a inside aaotf( 10i )tfw ip)u)4pn4ljd uniform electric field, and is suspended against the 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 mC. What is the magrj)( 7wt2l m-dew;eo rnitudr2rjw -;m do el7)wet(e of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a 7mqpsmznb;qyld5 ,.tum2 , / bcharge of 3.0 mC. What is the electric field 6.0 cm from the center of the sp7y tnmuq,ds/mb z ,m2q5p.;blhere?