State the law of conservation of electric cf-to; o u/5wgrpg 3z4 mtpea*.harge.

  Is it possible for two negative charges to attract each otherq n 3z,8omqlx -k*: tn8ds,tfs?

  Is it possible for a positive and a negative charge tvzt.9sw:+ r wpo attract each other?

  A glass rod is rubbed with a piece )t.q iwr4 x9 tkj0shr0of silk. During the process the glass rod acquires a positive chatqw9sxr .4ji)t 00rkh rge and the silk

  A proton carries a

  The model of the atom sfv1 -/5 t8uhtok4ae khhows a

  A neutral atom alwaysj3;2*( hamaci4eumu)v o pnm8i7e1yj has

  An atom has more electrons than0ec:1fnz-3bj;tz gw u r.bjc -nswt9- protons. The atom is

  Materials in which the electrons are bound va7 j36z 6ievgeery tightly to the nuclei are referr637aei evgz6 jed to as

  Materials in which the electrons are bound very loosely1ycf6+s * 8q 4dhlchnt to the nuclei and can move about freely cfn*6hsty ch18 l4q+d within the material are referred to as

  A negatively charged rod is brought nofa.h(y / jxbxg-2q; bear one end of an uncharged metal bar. The end of the metal bar farthest from theb/jqo xx( 2fa;b-g .hy charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They k c,5 :qxy17r7e:hl xvbvg 0yeare placed near each other ec1ykvvyq:e:7xgb0 h 7rl5,xon an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively char3g1f -.pvzgc bged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a poso -,o,bzmqbg)cy o5d- vz+,fritively charged glass rod. The electroscof) gmv-brozd+ qo5c,oy,b- ,zpe

  An originally neutral electroscope is grounded briefly while a positivelkbrg:x+;fda+ xt6 51nxll ac(y charged glass rod is held near it. After the glass rod is removed, the electrf+xgtdcra(bl6 5 k +nax :1l;xoscope

  A positive object touches a neutral electroscok0/xjueykzu, 5:. jb, gvz on)pe, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to vxouukn.: bze g, 0/kzj),yj5the leaves?

  A large negatively charged object is placed on an insulated table. A neutrhmp* rbg.9x) zal 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 negativebm 9gxr).hpz* 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 Coulo d)2n;kb v*)rlz: zhwpmb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d.-xqtb*bzr; ii .c fiw4zmg8: 9 The first charge is larger in magnitudb4 .zmz g:biit 9fx;ic8w r*q-e than the second charge.

  Sphere A carries a net cha d7v b*)cxtkiz7 8 6qmtbxv23trge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the ele6*)zvcqmt 2btxkvdx 73 tbi78ctrostatic force between them?

  Two charged objects attract each other with a certain force. cdnx wxjl( as5ke: 77n7y/-qi If the charges on both objects are doubled with no/ :5nc 7a-kwidn yqjl7 (e7sxx change in separation, the force between them

  Two charges are separated by a distance d an,8a m6wurxh3 sd exert mutual attractive forces of F on eachmxh s3r,86 uaw other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a fnojnpqe1 a:4 (orce 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-fourt(ap:j1 on4 eqnh its original value? The force is now equal to

  An electron and a proto rx11s qrqo2bh/) *jfkn are separated by a distance of 1.0 m. What happens to the magnitude of the force on /1bj2x h1sqr )*qkr ofthe proton if a second electron is placed next to the first electron?

  An electron and a proton are sep0uo+ - y0gsj/ad8wysp arated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electr jgsod-usp+ ay0 y/0w8on is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m.ombn3 )6-hfc y5 pn3rr:+emth What happens to the size of the force on the proton if the electron is moved 0.50 m close )bo f ehrtm3nym3r-n6c:h5+pr to the proton?

  A point charge of +Q is placed at the center of a square. Whez rkkpk71xn:i a c1s:+t,rqry(p / *won a second point charge of -Q is placed at one of the square's corners, it* +n1p7,1 k ktrciwoq::/(py sxrr kza 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 acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the ceg 2j)+pqtvr2untroid 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 centtqj+) 2rvpu2g er charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vejo;qg / .zjl*gctor?

  At twice the distance from a point chabav6 1 wc td :sksqm+.4v0k7bnrge, the strength of the electric field

  Is it possible to have a m xjpun +2ur6l 69f4rszero electric field value between a negative and positive charge along the line jou umj2x fn9rs46r+ 6plining the two charges?

  Is it possible to have a zero electric field value between two positive chy iqp24p*bkz j+a *dz-arges along the line joining the two chargesk*zidz+4 -yj*a2pbq p?

  Electric field lines near psitive/wf4)k4rs xs5 meidz6 point charges

  The electric field shownh*6j vg kd3*hc

  Can electric field lines intersec-vo(lezdy 9n -t in free space?

  A solid block of metal in electrostatic equilibrium is placed in 57sfmwn,w(q bv8 u lhm0du x0;a uniform electric field. Give a statement concerning th q708nm5 v d,uxw0bms;wulf( he electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters awm.0w8oqk5 f+ ha;hnjre each given the samea5 qf;0+nowjh8mk hw. charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum resthhx l.7ri)ypwbflkcfe 2 85.b4k, 8vss on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top sulhfcv kyr 7bp l.i2e8 5f xb)hk8,w.s4rface?

  If a conductor is in electrostatic equilibriu6hx.6sghxc *zlusw63 m near an electric charge

  A positive point charge i-2 5c t1z6nkp ,w3bpoa9fvbbt57 gtxn s enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point d7p,5ttc93xba g5o2v b kfntwp b-nz61irectly above the hollow sphere has

State three properties of cb:bypv+x(4 :czyitn 0 onductors in static equilibrium.

State Gauss's law.

  The charge carried by onnvpo 3r pdq7o-27o c.ve 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 charg2 r ,l auppqy+5h7u.qwe of +2.00 mC. How many more protons than electrons does this piece of pllypq 5up7 a+ uwrq.h,2astic have?

  What is the charge onyub xux+1 1cgg8*zlg , ewpf8( 1 kg of protons?

  An atomic nucleus has a chao tf*lo9+dz+q2u dcsi8h2jf 1 rge 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 5tc /jk20rt znvalues of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forr /tkntzc5j02 ce between them?

  A 1.0-C charge is 15 m from a second chargew9 a0kyz6tgh 7, and the force between them is 1.0 N. What is the magnitude of the set07 z69kyhagwcond charge?

  Two 1.0-C charges have a forcgh:nsvr. h a72e between them of 1.0 N. How far apart are they?

  The force between a g3ulk ;ncp,a5 $30 \; mC$ 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 fofeg+/t xzvrs .7(zi :xrce. If they are moved to a new separation of 8.0 cm, what is the electric force bezv 7ser f.+tx(i :gz/xtween them?

  Three identical point charges of 2.0 mC are placed on the x- xtxrr:;- y7vfaxis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 xv -tr:ry7xf; 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. A cha,*0rf mt8zxm.ll-hhi 3 bl wn/rge 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 ll/x-0bmt*w ,3 hflzh8 r. mnimark. 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: Q+pva6 s 5kk6,l / -snrjsfv)ku1 = 2.00 mC at x = 1.00 m;6,+s u pkla -f5kv)n/rs sj6kv Q2 = 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 is plaim 746- blalvm0lrzf:pm*j0oced 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 rll*:p l0 i vmb064mzomfaj-7is 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 = -1.4g6pvv g6hwdw4 3a.pu 0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What w6phwd4au6v gvgp3.4 is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC r,vn5 /4nny, xb3px dgis at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What i vd y5p3 xn4rng,b,/nxs the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at th/6kw((0c ip9ial b8 r n+dpithe vertices of an equilateral triangle which meas+niki( /lt0cb6 9rpih pa8wd( ures 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 and +4Q,v8iqvt:a 9yn 8 which are separated by 3.0 m. At what point, on a line between the two charges, woya9t 8n8:vq viuld 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 the origin andfj3+eop;7isig k3a8d a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third chari37giek fs3pdj8a;+o ge be placed so the net force on it is zero?

  Charge +2q is placed at the origil 8cl*n4o z/wwn and charge -q is placed at x = 2a. Where can a third positive chargwn8o *4c/ zwlle +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tota+ 6p) r+oc+ )ujjr,kwvfo npn7l 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 gravi o(w2y(m heyq o :h(saky/0/vzty by the attraction of a fixed proton some distance above it. How far above the electron is0z ( sy(e2h/ykamow( qvhoy:/ the proton?

  Two 0.20-g metal spheres are hung from a common point by 90*labt djna oemys9:8*m)fu nonconducting threads which are 30 cm long. Both are given identicde to9s*0lm)u*a8y m:9jbf naal 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. Whatrhljmb. 5bq:m +lr2z3 t7ha q( is the magnitude of the electric field at a distance of 1.0 m from the nucleu (b7:zmmlqrtr5 b2+aq 3hj.hls?

  What are the magnitude and direction of the electric field at a distance of 1.50/ 7kyo 2dbgc/i1 3uxwm5(plzr m from a 50.0-nC cbl kx i27ro 5/p uz1myc(dg/w3harge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitud 2zn5 /i,xx zwb9)0 dyc+igakve of the electric field at the location of the test charge? 2xbzaw9+,i xyiz 50/ndvgc) k

  A 5.0-C charge is 10 m from a small test charge. 3ex,m 8 cb-q9dx dp3fd What is the direction of the electric field?xpeqd x3-3mdd,98fbc

  A 5.0-C charge is 10 m from a small testzn1i) jybs. )g charge. What is the magnitude of the force experienced by a 1.0 nC charge placed abjsziy ).n1 )gt the location of the test charge?

  Two point charges each have a value of 3.0 C and are seq h1r c8x/b5izparated by a distance of 4.0 m. What is the electric field at a point midway between the two c5qhi18x b czr/harges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sy8jb8p5v t 8ay6m ld+htick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fiedl 8 pm8a65h8yvbjt+yld at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a mec2rbhmq)4c4ki y p;g- ter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on ap4gcq4;mhcikr2by -) 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 x9kp04huxurbcu9g6w (k + t5sr = 0.20 m. What is the magnitude of the electric field at the point midway tg ubp(ck49urs9r5h wx+0ku6 between them?

  Three 3.0 mC charges are at the three corners of r82ht6 km h8eo2v:plt 4u nni6a square of side 0.50 m. The last corner is occupied h4kr8l 2m tnu6oei6:nhvt82p by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed e 2fe stc9c/ibit* q14at the corners of thq4i bec9iec 2*tt /fs1e 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 at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is plasv, a1nmh4eg(9fbu c2hfa y21vlz+- wced in a uniform electric field. What is the magnitude of this electric fie(ufy f 2csg1h2,nazw4emvb-91 h+vl ald?

  A particle with a charge of e8q6u4;s hfyf n(k)y. br7hxi4.0 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 gt1 7ple-s)f cgz7j 0ys is placed in an electric field of 6000 N/C pointing downward. What charge must be placed )f-lpz ss70jg1tyec7 on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge owv2w1v sf;m9 vf -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 elecsw21f9m; vwvv tric field?

  A metal sphere of rads:. smjmnm1 32 vpl*-:oagogxo(pt)kius 10 cm carries a charge of +2.0 mC. What is the magnitude of the:.js l- :npm* ogksa1)mo( pgm2otvx3 electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.04w. wd)/st ava cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of thew )va 4.sd/wta sphere?