State the law of conservatiob)b 8b7d1+jtk uzv -ngn of electric charge.

  Is it possible for twu1:d o bz u24)dx)jlrko negative charges to attract each other?

  Is it possible for a positive and a negative charge to7904ov51 epwwfdmzco attract each other?

  A glass rod is rubbed with a piece of silk. ,8;l;f 2khpb)yqjqiaa+k la2 During the process the glass rod acquires ,+q la2b;klj;8a qy2pfkh)a ia positive charge and the silk

  A proton carries a

  The model of the atom showsqb3rvvwqrh90 3spckipraxc* 0l84, 7 a

  A neutral atom alwayb9i wqnf/9igg gwj7/q.9 gak-s has

  An atom has more electrons than protons. The atom i m9r :;6 mtrju+papyh,s

  Materials in which the jm;c; *a4ho9wh/sb rztx7/ u:st y8otelectrons are bound very tightly to the nuclei are referred thwst myhs7*at/;;j 8t4: uo b/ cx9zroo as

  Materials in which the electrons are bound very loosely to the nuclenni +nx s0fh+w,ek 0/ci and can move about freely within th i,0+enckhx0fwn/+s ne material are referred to as

  A negatively charged rod is brought near one end of an uncharex o v(8kwvc2q69(cdtf2 r2 iuged metal bar. The end of the metal bar farthest from the charged roc (ivt r6o f9d2( vc8eu2kq2wxd will be charged

  Sphere A carries a net positive charge, anuv-i:lx6 9p1gdvo/j72g o zhqd sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire thaiq 21-dgozu go hjvl/vp9 x7:6t is grounded. Which statement is correct?

  How can a negatively charged rod ch7+t+ h8ctcco ua zr**carge an electroscope positively?

  An originally neutral electroscope is briefly .b vg-sko:juq*t5(zt touched with a positively charged t:ku(v .z5jtbs-* oqg glass rod. The electroscope

  An originally neutral electroscope is grounded briefly w1seqdv;85bvvo b9 ;y qhile a positively charged glass rod is held near 1e 8dvy ;bb9qs;5qovv it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscop2x7d df h;f )d-s(blxegg gt7:e, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the2fg :xlgs7;d7) x- fg ddthbe( leaves?

  A large negatively charged object is placed on mq;g4vr*/iz 8s ,tt span 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. At no time does either ball touch the negative object. What is thviss* rpz/m,q;t t4g 8e final charge on each ball?

  Charge is

  What are the units of the Coulomb cons-r-ty mdw)z6 iu vx+ov6nk.4ntant $k$, which appears in Coulomb's law?

  Two charged objects are lqd+) +gjypa,2 v2ytvxgj 7-sseparated by a distance d. The first charge is larger in magnitude than the second charge.v qg,+sjyp+2djv-2t gyl)ax7

  Sphere A carries a net charge an-/p*u kp risbr:r06nwx,iv2 td sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the6ts /p rnp,ix:buv0ri2w-*kr electrostatic force between them?

  Two charged objects attract each other with a certain force. If th, y o:rgihz)q dvin50ru0x -g3e charges on both oivhynq-igr0r5z) od:u, 3g0 xbjects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractiv6 za zmztc8+.fe forces of F on each other. If the charges are separated by a dista m.6ztaczzf8+ nce of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens toifl31 6vz osrc6 5kb:ev1 8ics the force between them if one charge is doubled, the other charge is tr6 6creki s18izov5fv: l31scbipled, and the separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a pro4 yk :ojdd aa)o jvrv037l5r5jton are separated by a distance of 1.0 m. What happens to the magnitude of the force on thj 4 ja yv5vado5jo) r7k:r03dle proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happensvf91)h 2lbkjhld0 h9c to the magnitude of the forced f9c21) hkh0jvl9bhl on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distg.yeur1v 85 bpance of 1.0 m. What happens to the size of the force on the proton if the elyb e81ruvp.g 5ectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When afzd;w 4u l2.wa second point charge of -Q is placed at one of the square's corners, it is observed that an elec24.za ld wwuf;trostatic 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 db c;/cy0 ffr:(ltn8vmw8m8w is placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an el/fy;80 d (wv8 mlbmtnc:fwc8rectrostatic 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 na av+:0:j bc- b zk/qoyi(zos:ot a vector?

  At twice the distance from a point charge, thewk+we dl l(jfcc e+61,+j:jln- m 3she strength of the electric field

  Is it possible to have a lqi r/ e1ytvj:* pmq9)zero electric field value between a negative and positive charge along the line joining the two ch*:1r tye)q lpij /q9mvarges?

  Is it possible to have a zero electric field valuhq1. 8 cthmp3je between two positive charges along the line joininh 8ph1m 3qcj.tg the two charges?

  Electric field lines near psitive pointbtk i b9bu( j95z74apx charges

  The electric field shown:n 2.lp udi*bg

  Can electric field lines intersect in fdef09 + c nxn:qxxu1wq80 lvu1ree space?

  A solid block of metal in electrostatic equilibrium is placeoed: sb4cwq+n 1eh6obss d5bb+p0 69td in a uniform electric field. Give a statement co0wbp snb+bed+:s 16qbtd69e4 ohs5 concerning the electric field in the block's interior.

  If a solid metal sph.-/5e r/ oon,ey cglhpere and a hollow metal sphere of equal diameters are each given the same c,l/p.erc5yghn eo- o /harge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table i9:impi7 3jwesoki dx/gx487 en a region where a uniform electric field is 3g e4k mw:joi/xe 8pi9xsdi77 directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic e q16/dv r gduq/vu**)2vje lmxquilibrium near an electric charge

  A positive point charge is enclosed1h,(:; rk.uv6 uixm sjvh2jta in a hollow metallic sphere that is grounded. As compared to the case 2h(uuk:,;aj1r . vis6xjtv mh without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of tu(vv pd+h 0y*conductors in static equilibrium.

State Gauss's law.

  The charge carried by o1xr/p74 ae j66duxs4tk)zmn x p*q +ifne 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 hassytv j:+-ckz2 a net charge of +2.00 mC. How many more protons than electrons doe2 +kyc:j vz-sts this piece of plastic have?

  What is the charge on 1 kg of prolj ynvx,+g:u 1m4 v4x-2qqb nrtons?

  An atomic nucleus has a charrbdix.jq1i37 ge 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 g uza. i)fcl(6cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of .gziu a )6l(cfthe electric force between them?

  A 1.0-C charge is 15 m from a second 7 /9cqesag9a ncharge, and the force between them is 1.0 N. What is the magnitude of the secq9g/naas 9e7cond charge?

  Two 1.0-C charges have a force between them of 1.0 N. Ho mpt 4epr dfp1,5-(yirw far apart are they?

  The force between a g /faorl(scf g j;sm(4( 5:cpw$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cg (y4ptxd-g.x m apart, experience a 1.0-N force. If they are moved to- . 4pxdx(yggt a new separation 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. T7w(sw ,ioe+93hgtc ws.hj +*u flulk2he 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 magnitude and direction of the electrostati7c(h fl3, te+wk9g2s .u ishwjl*wou+ c force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is pl7xnfrua*u33fwn k hh+9 h1kv(aced 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 n*19 fuk 3hf 7h(nav+wx3u hkrmagnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: 0cvu+dt q -fill1/fs,Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00cufisvl q1f/, d+0tl- 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 vw l.v v*lo:z6point charge of -Q is placed at the upper-left corner. It is observed that an electros l*zvwvvl:o6. tatic 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 xylm u/4z*j9,ugg m8j at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5 u my xg,j8lj*uzm49/g.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 np4t bnr0 p8bd1C is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directibd4n08tb pr 1pon of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed vb8qqtim hrj,+ :x )1eat the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on ahr,x8tv)eiq bmjq:1+ny one of the charges?

  Consider point charges of +Q and +4Q, whichr 2yevd -miyx, s)rst91*xd2a are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a chvm1y2tdas* -dsryx xi,e9)2r arge of -Q such that the electrostatic 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. xt4;gu5huj azutpy++a (m: *p Where on the x-axis ca:xa+j*zpugtmy5u ph ;4u (at+n a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the oulp0xz 94-bcs/sfn /i rigin and charge -q is placed at x = 2a. Where can a third positive charge + znfbsl0sx-uc/ 49p/i q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. 4tz7ho.wvme6:7 uvn9 gkej p1A 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 fibhg 5q6dg 16txxed proton some distance above it. How far above the electron is the protoxd h65tgq6b 1gn?

  Two 0.20-g metal spheres are hung from a common point by nonconducti ten, lf82unv7ng threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion lef tvnun,782 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+1k .r7srwsuz. What is the magnitude of the electric field at a distance of 1.0 m from the nuclk.+s ur7 wr1zseus?

  What are the magnitude and direction of the electrid u b194l.nbd:1fgxghl,y wz1c field at a distance of 1.50 m fromg1 h9d ,x.wlndgf4bb ly:u11z a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofzu8x+r*5g)i2un r gv o the electric field at the location of the test chv2iz*onrg r)uu+5xg8 arge?

  A 5.0-C charge is 10 m from a small test charu91fe o d6.hk+:bpq+dzjwi6w p6jz, oge. What is the direction of the electric fi +ko zpzw61 6d ej:+,d6pouh9jfiw q.beld?

  A 5.0-C charge is 10 m from a sawl- 0/a: viucmall test charge. What is the magnitude of the force experienced by a 1 ca -ua:v/iwl0.0 nC charge placed at the location of the test charge?

  Two point charges each have a valoe q)ucr)zpco(7 vs8 szq38- vakx-)jue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two rv8czo8jcoqk -(37s)ez- qu psvax)) charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meteic*a jsv;7+rzie9 a5gr stick and a -4.0 mC charge is placed at the 50 cm mark. Whvar9jzi 5ei +sag7 c*;at is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm xzgmqb 5x o4/7mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. zo7m/gxbq54xAt 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 ogc;g w39s-jzj l9h*rk:dm n0 d u.hv3are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric gonh ;ukj3s cd:hwgrj*dz9 v9m3l0.- field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.5i;g:gx1uo*lg7 oh : aa0 m. The last corner is occupied by a -3.0 mC charge. Find taiogg:1g:; lo7ah*u xhe electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Cha3: wekv)5edi-si4 vwp rges 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 (1, 0); -3.0 mC at (0, 1). What is t:4-w 5e3 kdp ii)esvvwhe magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mw8zjlrs)3f 4i C when it is placed in a uniform electric field. What is the magnzws rl i)83fj4itude of this electric field?

  A particle with a charge of 4.0 mC has a mass (q) xg91 i0qfp.to a *a/zixeiof $5.0 \times 10^{-3} \; kg$. 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 nj 0ysz6ebkiqd;o+b y2 l06 )w.rw*soelectric field of 6000 N/C pointing downwalbjnwz*ro.2y )dy06okbs s0e;iw+ q 6 rd. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g cal20:ydo)olw m,jqti, )b v0 grrries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the l iboqy)j,o2w)dg,r l v0:t0melectric field?

  A metal sphere of radius 10ohks a8/) wicca2tcu 4xs oz7q4 6gz.5 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm sxusgoq.2 c)8ziwt 645oazh / cak7 c4from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What isu5quh ft+9 :fy0 z.ebo the electric field 6.0 cm from the center of o:+z59h.tffy0uu qbe the sphere?