State the law of conservation of e;pe/rqyk06qa+f * mlflectric charge.

  Is it possible for two negative charges to attr1w fi)5iviq3 pact each other?

  Is it possible for a positive j a ;v5xgylxnc3w9.-s8yc 3ycand a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Duri /-seqmx--bl zng the process the glass rod acquires a positive ch-szbl- em -/qxarge and the silk

  A proton carries a

  The model of the atom show h p8nx0q93ulik7z icvp3ra(0s a

  A neutral atom always hasaapo*9b. l19obo 0 emq

  An atom has more electrons than pd6l6 wt*a6u rda yqw5;rotons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are /n q9-johj +gp)pdi+ireferred to ohg-ipn+q /jipjd)+9 as

  Materials in which the electrons are bound very loosely to the nuclei and can m:h aq/gs,uab3lm0u7-rwl: 2nco-ij y ove aboutq2u 0,lgri-ajyba:snw hmc3 l: -ou7/ freely within the material are referred to as

  A negatively charged rod is brought near one enbzjz e27 pj07 r(ck;yqd of an uncharged metal bar. The end opk7zcz r;207e (q byjjf the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. :co 0gujxhm 6/They are placed near each other on an insulated table. Sphere B is briefly touched h6c:/g mu0 jxowith a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electr7ywir/2+uib1 p,8bc 9rba tjk oscope positively?

  An originally neutral electroscope is briefly touched w - cx3+x;tql (ufup3xyrp z9*rith a positively charged glass rod. The electruflpz+xtr;( 3xxqr y* c-p3u9 oscope

  An originally neutral electroscope is grounded bri rf 9rc5x(zh wih2)3c 2b8ojdcm. )wkoefly while a positively charged glass rod is hho9xcb2 f.)cwr mc r8z)h(j5 kdio32weld near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. vj- l qf/nib zw;p21 us xs9*kcnd(+v/Then a negative object is brought near 9si sduv/*kxbf wv(1+cnq-j;nzpl / 2 the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated taba y1/vl3i-qi fle. 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 i- v q/ia3y1lfobject. What is the final charge on each ball?

  Charge is

  What are the units of 0lswx4m9ea zz m.h:l(g sek *0the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are sa6bwwp783izgvvtp 5nc2-i 0 u eparated by a distance d. The first charge is larger in mag7 vwzn2630v5wi ab-ctp 8gp iunitude than the second charge.

  Sphere A carries a net charge and i c+;,xj qzpz*b d*:qu4z6mtosphere B is neutral. They are placed near each other on an insulated tqdu+cqzot*x:zm i ,4jpb *z6;able. Which statement best describes the electrostatic force between them?

  Two charged objects attr)+vobcz- 648iddpocfu,m 1spact each other with a certain force. If the charges on both objects are doubled with no change in se8ip bzdf6c pdc -)om4osv+u,1paration, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcgz+738bt jcqie;;hy ves of F on each other. cqj;+gt7 8izb eh3 y;v If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other witgkt8x ;c si,ty/:w4 kth a force F. What happens to the force between them if one charge is doubled, th iwckt8/t : gt;kyx4s,e other charge is tripled, 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 proton are separated by a distance of6q6h,pmg; lefi2 k:nh 1.0 m. What happens to the magnitude of th:e ,lqgm;h6 k2nfp 6ihe force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by nkvww 0lkuc*wwj0mi3. 26ta 2 a distance of 1.0 m. What happens to the magnitude of the force on the firs ww30jm0wkn 62kli*2.wctvau t electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happen7kjsfwlxu6sfhumm5 );jx3 p ho3(g 8: s to the size of the force on the proton if the electron is moved 0.50m(uo7fpshu)mgw lj33xhsj k 8 ; 5f:6x m closer to the proton?

  A point charge of +Q is placedh:9k 8xvcj1t5-a l czl4;rerswo i(,y 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 elec oj : eh54rtc8rvs w9l1lc yaz(x,-ki;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 is placed at the cemgh bmsjsmwc9;9p)71 6q -dwqntroid 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 qbwdqmj9ps 7g 9cm);1 hwms6-on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following r;l:edw0jbwt 4bq q( 6is not a vector?

  At twice the distance from a po tm5 uz0iv(-pwint charge, the strength of the electric field

  Is it possible to have a zero electric fier fs,am7 98t(r4g t skqp.ebcqjev6 *,ld value between a negative and positive charge along t(qsp9k,a4be sjt. m6 cetgrfv7* r,q 8he line joining the two charges?

  Is it possible to have a zero electric field value between two positive char9wu b- r:mhe0nce8ye.ges along the line joini.:eenrwb 8hcu 0ym9-eng the two charges?

  Electric field lines near psitivea *ei n15m,d0wazkyw: point charges

  The electric field sh 0cnn1birh) ff g(6tgl49tyuzdi;2*b own

  Can electric field lines intersect in free space7a2n u f10 yv na,s +f a8fsxv9x*n,kdyj+mip3?

  A solid block of metal in electrostatic equilibrf4td 7 au/x6vbium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interiovfaub764 d/txr.

  If a solid metal sphere and a hollow metal sphere of eqhpq0r1*n93yo* x y(m+qittza :xsy(r ual diameters are each given the same charge, the electric n(sr (yq1ty0yr :*i x3mq9tpao+h *zxfield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woou73oax *3g,wt(l ofxrden table in a region where a uniform electric field is directed straight upward. What can be said conceo(fwl3*grt 3uox,a7 xrning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elecv l)8jjc*n u2rtric charge

  A positive point charge is enclosed 180y-ou(ed3 e4ufmzz-qfq hdin a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphe q-1ym8oq e4ef-fh ( zzdudu30re has

State three propertiwov ir q:77h+res of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one eleho h4zbn 3js-npqr927ctron 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 88*0g c6n uto1iwmpni-gr .jystnvi-a.e15inet charge of +2.00 mC. How many more protons than electrons06w5 i8n .- rj1v8t onn ie.mu isyc*ig-tagp1 does this piece of plastic have?

  What is the charge on 1 kg of protnhc 07v3mqbjh2 / q5ajons?

  An atomic nucleus has a rp nv5i c+ttu(l2yh00 qm+ml/charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated;hq4mxzwdhufwt :pb48 4a 8a5 by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric f4hu hxzw q 8fawd:b5;tma 484porce between them?

  A 1.0-C charge is 15 m from a second charwzyv oh* 1yz52ge, and the force between them is 1.0 N. What is y5o zhzw1* vy2the magnitude of the second charge?

  Two 1.0-C charges hav zv d k0j18ryf9plg/v.e a force between them of 1.0 N. How far apart are they?

  The force between a y:73swqiyvm +c tj*m 8$30 \; mC$ 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 tnllo +z9oq, new719 jydy )x.ehey are moved to a neo9n,o7+ .e d9 y j1xylqelzwn)w separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 92 g;9ne d asdp;3 bhs,bnry-c2.0 mC are placed on the x-axis. The 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 electrostatic force which acts on9hrc;g3e -a2, nb d9 ssdpynb; the charge at the origin?

  Three point charges are placed on the x-axis. Alja,jge3abobl83h 8(c*c b+ b charge of +2.0 mC is placed at thecj+*8ebb bl,3ag3 bahlc jo(8 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 electrostatic force which acts on the charge at the origin?

  Three point charges aob8v1c wp 1lsawo. +j1 iy *;ve*ko2zmre located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 msjeoyv; wv*a.kl28+wip zc ob*o11 1m C 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 placed at the centeroi/ ;n)f;/c6 xbhn dreil*i ,f 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 the magnf ii6)i/n x/ rfh;;encl*,dobitude 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 iq skys c g)76y3vw9wj5f:j+m6dqm 1mts at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the n6vtj91c yqm)5sqgms 7fy3wm:w+ j6d ket force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at xyv 1e5rzzh m9f;3((tzxzkf3(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC chargz 9 h( tvk1z5re(ff y33xzmxz;e?

  Three identical charges of 3.0 mC are placed at the vertices of an eqmey 0g5cvd b407ss 7;vnt*liv uilateral triangle which measures 30 cm on a side. What is the masbn s07 5m47ec vvli0 *;vgdtygnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which t/ zd,fp*-bo vare 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 ,o/bpzvd -f*tacting on it would be zero?

  A +3.0-C charge is at thr myn3osc 4g3w)c+ ,fke origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a thircsc3kfo4)+ g ,y3mwr nd charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is pkke0pdli wkk c1 d5+)sxf )9h*laced at x = 2a. Where can a third positik)kp 0h9 *edcixwl+1)sf5kdk ve charge +q be placed so that the force on it is zero?

  A copper penny has a mass v-sy q: bko1ps)r.-un;xy yakh.v*0cof 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 against tk.cu5ap1r3,db2 e)kyd hc-unm 1mum6c* bkn2 he force of gravity by the attraction of a fixed proton some distance above it. How far above the electron iu drb-ac hd, cuk2.e635 bncu)y2nkpk*m m1m1s the proton?

  Two 0.20-g metal spheres are hung from a c:dfxo3 xcq8 -i: dmti)ommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electroqti) -:cf im8x3x:do dstatic 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 magnitude of the elect,mem tr td )up+*l9p-dric field at a distpr)eu*m9l ,-m ttpd+d ance of 1.0 m from the nucleus?

  What are the magnitude and di/. wz0b;xzk* 8p dcdybrection of the electric field at a distance of 1.50 m from a 50.0-nC charg/w d*c z p;dbxbkz0y8.e?

  A 5.0-C charge is 10 m from a small teswtd,jflju 0p+i8)o ;kt charge. What is the magnitude of the electric field at the location of the , u;kj8o) l+jfdt 0pwitest charge?

  A 5.0-C charge is 10 m from a small testv1savgx wkw ,fu-;7t*l m sy)2 charge. What is the direction of the electric fi2ft 7 w*gwasv)m y- 1vu;,sxkleld?

  A 5.0-C charge is 10 m from a sm8 -k/)sh*zvps9tmo;-h ngjf x5/u gfkall test charge. What is the magnitude of the force experienced by a 1.0 nC chagtx- hj-f k* v/k/u z89s5omfgphs; )nrge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by z+5j 6zoydad rt1.0ylv;fonhu* 6w tnx-9ea0a distance of 4.0 m. What is the electric field at a point midway;9 15dau0r .tdy n6+*nywhefatj ov60-x zzol between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter 7)c,z jea9q phstick and a -4.0 mC charge is placed at the 50 cm j79z)hep ca, qmark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cmr9zznzro.c tc18 7ln, mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges il. 91ztrc7ocz8r nn,z s the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x sabk-m,vas. 7 = 0.20 m. What is the magnitude of the v7ss-a.,bmakelectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of)mpo/,jz / )+hjgf gad a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Fmap+g/)jz /j ,ofghd) ind the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are pl-,0fem dyf; 4gr: jpbye3x,jjaced at the corners of the square arm,;: e-b xg4d,3fjp f0eyj jys 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 placed in a uniform electr0bzkl2ag b (g1tt :zt/ic field. What is the magnitudg t 2abb0k/(t: tzlzg1e of this electric field?

  A particle with a charge of 4.0 mC has a ma.i(xnxg*2; fexj ;hr;0frw gpss 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 electric field of 6000 uo:ql9sa-d at(aj5/ aN/C pointing downward. What c9ala5qaa-:(od/j ut sharge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries vi)/6jz,t d rp hzn(d2vtwj 0)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 dzd/ htz j2r) ,0 nwi6v(t)pvjelectric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the mag -k w g6rp6m4tgo89apn,v jyv9nitudewm-n69py 9 tjv4g8p6oark ,gv of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carrt.acxq 1fjxhz*p3 b 82ies a charge of 3.0 mC. What is the electric field 6.0 cmat*z8.13cb2q xxhp jf from the center of the sphere?