State the law of conservatfm( 0ygtcn6y6y* )dlrion of electric charge.

  Is it possible for two nerrdaqq+i k ;mgh06, wj1fa1wmz e),j9gative charges to attract each other?

  Is it possible for a positive and a negative charge to attract eacdq n wwrdd.yj-+dv. )3s*b rem6+f*xvh other?

  A glass rod is rubbed with a piece of silk. Durimwq2 9di;j+:6pzor4)dm bj nnng the process the glass rod acquires a positive chabd j4m:p6) w +jrm9idn ;2oqznrge and the silk

  A proton carries a

  The model of the atom shows awg7eox+u yjb 8)k4 nrm*w)u;d

  A neutral atom always hau z 5tjp ns /,a2v+0kgdr3+drts

  An atom has more elej t8 (7arfrq+kctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are referr2ln )j:,s k,gklim lj)ed :lj)) 2 nlgmk li,j,skto as

  Materials in which the electrons are bound very loosely to the nuclei and b0n 5 4 ykya8zvrszy2g 5k-6elyf3itwwyo+): can move about freely within the mbnoy0 vy68kkysf5 ) w+w2tyr l 5y3gaze- i4:zaterial are referred to as

  A negatively charged rod is brought near one end of an unppdv+;s d: .djqih//bxl- st .charged metal bar. The end of the metal bar farthest from the c.vihd-;s+q/tlp dds.j bpx /:harged rod will be charged

  Sphere A carries a net posit:6p mtn tq4 ; 220udzrvqx2,ocuffh6cive charge, and sphere B is neutral. They are placed nenqtf6dmx ; 2pu6t2c,qzrhc2u 4v: o f0ar each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod cha,f87srai9dih+fn)c yb2nck y w-ok( +rge an electroscope positively?

  An originally neutral electrol25 4yjppw e3nz2s dn1s(npoq94h fl;scope is briefly touched with a positively charged glass rod. The e(eyln25 osnz1p ppq44w92fjd ;hsnl3lectroscope

  An originally neutral electroscope is grounded briefly whi; +btmdzq 4k(lrrt9 d6: 4bztjuwh.c9 le a positively charged glass rodqb. rw94bz+6km h 4;t t(juld9:rdtz c is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sepm,/tq pkd2 sheo*(,pyarate. Then a negative object is brought near the elepmey tdqo(h/*sk,2p, ctroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral m 5)ti) nmonp/letallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic )n)l m5t nip/oball 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 the final charge on each ball?

  Charge is

  What are the units of the Coem.1 +penh -moulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fi:h7 kzliyn f*.rst charge is larger in magnitude than the second charge. *kif.hz ln:7y

  Sphere A carries a net charge anst-.ifzx5 z t,v)mjd:m25 p5nm niei5d sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic jxt)d,-e5n:i mv.525sfizmz p5mi ntforce between them?

  Two charged objects attract eaoh.jd hw 15rjd33p9g bch other with a certain force. If the charges on both objects are doubled with no change in separation, th hh31gw3oj 59dbrpd j.e force between them

  Two charges are separated by a distance d and exert mutubm 91imy c9ls-ntuo+r73xm5a al attractive forces of F on each other. If the charges are separated by a distance of d/sxoac 35r mm-1 i9lm7bn y9u+t3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What hap4a f2i1 y2gkdspens 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 originaf 2kg1isda4 2yl value? The force is now equal to

  An electron and a proton are separa;gq 8 zk6w)y:yb z uj/v.wi-xlted by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second wu6gjklv-): zy. bqyx zi/w8;electron is placed next to the first electron?

  An electron and a proton are separated4iq : t5qcn1ga r9orp*./xfji(xg8zy by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a secg tioqf gjyn95:r/(a4p1z.x 8 iqxr c*ond electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m( -ne e48oz(onp is2qr. What happens to the size of the force on the proton if the electin8z4ep-oerq 2(no( s ron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the c2 zh lukhwif4e +01fce97+ljkuk6c t3 enter 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 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 electrostaticki4ee1 tkfjcl2w0fz 6lc + 7huu+h3k9 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 5t)zv:o u9 vh(./veg )8ztyfpe(mlxz triangle. When a second charge of +Q is placedh(eg yt l:m/tzp oxvvf))5z8v .u(e9 z 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 vertices?

  Which of the following is 2 ooss/ad8 ,9iqy rz*knot a vector?

  At twice the distance from a point cebr v30ba 3*uzharge, the strength of the electric field

  Is it possible to have a zero electric field value between a lprlfc6q-i-.,d6-jl 2e 3 ykgpfqx4e negative and positive charge along the y e c4-qle6pf qij,26dll3.kg-rfpx- line joining the two charges?

  Is it possible to have a zero electric field value between t0 5kk oua6lqvdjr1c)x4ve3 .jwo positive charges along the line joivjr6 c5e.) koqx4jd3vka l01uning the two charges?

  Electric field lines near psitive point charge) z-.aet jpivgn4g;j9s

  The electric field sho o*hz9 btfy4(pfp vypot;); q/wn

  Can electric field lines interseg) go5+i xm54 nd9rigqct in free space?

  A solid block of metal in electrostatic equilibrium i/g/rtnlhk x * (*uzyk4s placed in a uniform electric field. Give a statement concerning the electric field in the block's interi //tzl*y4k *(kurnhgx or.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each 2:0ahs *9x bltil9wf lhkk/ v.given the same charge, the electric field (E) midway/bk2 l.h9la lk*x:9w0itvhfs between the center and the surface is

  A cubic block of aluminum(kmqzx,8 s)9zdosk5w rests 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 toqd(x 8s ow m,9ksz5)kzp surface?

  If a conductor is in electrostatic equilibrium neqj p;nvn*0i uk8shremu 09/4oar an electric charge

  A positive point charge is enclosed in a kqw ksb4ch5aud2c)m;t a/1*shollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the ua1kcwbt sk)*c24s/ aq;d5mhhollow sphere has

State three properties of conduc:rmwu so0f84fh .sqlta-;2pvtors in static equilibrium.

State Gauss's law.

  The charge carried by one electron i cc8 aav)/hs;:rpk2i ss $e = -1.6 \times 10^{-19} \; C$. 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 d*udlyvg7,i(8/riny more protons than electrons does this p/,vdldgy iri(u78ny * iece of plastic have?

  What is the charge on 1 kgnl+hj c )c7)iu of protons?

  An atomic nucleus hagf 7hl/ s m jowy4e4(p:(ju+gks a charge 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 vj v-zmw b/+(qahqx0pr8v-es+cx r ddny6k352 alues of 2.0 and -4.0 mC, respectively.s (rq bz8w/njv +y xh-r0d63 2exa-5kc+mvd qp What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a secowv+u)1j2m1lmzp qn 5,ebbk) f nd charge, and the force between them is 1.0 N. What iswmn1,15um+b2vzk )) be pqlj f the magnitude of the second charge?

  Two 1.0-C charges have a force betwqmm( hr6gg7( 9l9bqm deen them of 1.0 N. How far apart are they?

  The force between a + gvcb:,gxqu.$30 \; mC$ 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 forcch :p7ikxl1miyvm /c t;i5) q:e. If they are moved to a new separation of 8.0 cm, what is the elei ): cm:xh/iclvykt;q17i mp 5ctric force between them?

  Three identical point charges of 2.0 mC h 0rectc-x.va(pgirxe+5w7em8 k 6/3 ywu0c jare placed on the x-axis. The first charge is at c-ycpe hc.0(6ev5xwa3r7w/ rxt8 eik 0g+m uj 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 on the charge at the origin?

  Three point charges are placed on the x-axis. A c hct677jd+dq2 c vjq9jharge 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 electrostatic force which acts on the charge at th 79jcjt c+qq7 vh6d2jde origin?

  Three point charges are located at the following positions: Qhcn 5,0af *sul1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What hl 0n5,a fcu*sis the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of 65vx73. tvn x sybfhjmht08-ca 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 tsht7x. bc-3vh5fy08xmj6v nthe center charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.;5luj0+f o 8p*f3v y; yvbqers30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net f0p5qfb3e *; js+f;lv8ryuvyoorce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5. *p7r2*er elvjsd3mb70 nC is at (0, 0). What is the direction of the net force on the 5**23b p vdj m7erlr7se.0 nC charge?

  Three identical charges .8tr)ztom(d.qa+ znd of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the mag.tr mz( z)+d tadn.oq8nitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3 b6 ro1cu) t9tlztfbz0sf)0;c1(dyll9e7s h h.0 m. At what point, on a line between the two charges, would it be possible to place a chargsol0 t)1;frb tbud9c7sel9 0)1 zlhh 6f(cztye 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. Whho) wpa is pwzo (h7(:j.7 izzt)1hiw*ere on the x-axis can a third charge be placed so the net force on it i)iz 7hzh(wt wpi)iz71:oha.w *j sp o(s zero?

  Charge +2q is placed at the origin and charge -q is placed l jujbcnih0 os+, ;m9.at x = 2a. Where can a third positive charge +q be placed so that the fn h olj+i.mu,c09 sbj;orce on it is zero?

  A copper penny has a mass of 3.0 g. A totny,w- dn03 pdlal 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 vgpxl mj94 9zzmz wwq7qi2 (7,93kyiuup against the force of gravity by the attraction of a fixed proton some distance above it. How far above zpg3u7z(ijwl2 mm 99yxwzi9q v4q 7k,the electron is the proton?

  Two 0.20-g metal spheres are hung from a commo4rkbhz 9,qs2*ff /v2uaaz nd /n point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion fofhvzq4f 2, a2asunbkz/*r9d/rces 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 ol7pp6 /ghy6hcq 7bl. mf the electric field at a distance of 1.0 m from the nuphcb .qlh pmgly76/7 6cleus?

  What are the magnitude and direction of the electric field at a ddm y7;vu+amhq .suf,b9)ol* distance of 1.50 m from a 50.yd)*.+u,9;uvms7 b lofhqm ad0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of tem.hlc)(e.: u. glr syhe electric field at the location of the teur.)(ey:.. clsgle h mst charge?

  A 5.0-C charge is 10 )tv+aye.f; o4cut v9lm from a small test charge. What is the direction of the elelv. y 4cuttfo;+av9) ectric field?

  A 5.0-C charge is 10/ne+nf4px h 69d+xvf a m from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chaxp ve/ff d 4+xan6+9hnrge?

  Two point charges each have a value of 3.0 C and *;fjxhzkn w4j.bs7mz c3: j8ygp(h,care separated by a distance of 4.0 m. What is the electric field at a point midway between the two charwp*bc:jk z s3hg4 n;8 h.jcf,my7zx(jges?

  A 5.0-mC charge is placed at the 0 cm mark of el: l7e 9nyk.uqs0cl 7a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm myeln 9ske.cl70: 7ulq ark?

  A 5.0-mC charge is pm2lfdru bz98lj gec3:x .f 5o:laced at the 0 cm mark of a meter stick and a -4.0 mC charge is9: 2gzfo:e rdl8f. m53x cbluj placed at the 50 cm mark. At 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 are placed at xm9)jgv*lh a z,dz .1gd = 0 and x = 0.20 m. What is the magnitude ofdj1azg)dzhg,9 v.ml* the electric field at the point midway between them?

  Three 3.0 mC charges are at the three cb()vkgjrx l9- +xmx 5xorners of a square of side 0.50 m. The last coxx9xbk( mv-r x g5)+ljrner is occupied 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 placer- kgo.x)tgi(17w aa uo2j f3ed 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 (0a xriae kgufo 3g-27w.o( t1)j, 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 ele r2k7pq e*osg-ctric field. What is the magnitude 7gr-p se2q*okof this electric field?

  A particle with a charge of 4.0 mC has a mas,ku n) -:xnz1vzxw;1 (7l + uc sbflru.bzn4pts 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 N/C/0 -be 5apels3xca u:8 0-ptojkniy1v pointing downward. What charge musp -o53 etcu1i:-as8e0/xl j akvn0pybt be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charg3(qpl6h +xcgvo + :79w/gzce 1etdkr he of -2.00 nC. The ball is placed inside a uniform electric field, and is sust6c9pq/+k1g:3xdzehc 7lehw v o + (grpended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chargeeh; 1l phkgq6o0j2f6(xqub 4 g of +2.0 mC. What is the magnitude of the electric field 5.0 cm from( fu6geh h2j;lok g14 pb6qxq0 the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is t i ok/j7)6cl sg*b7du uypuw:3kig:v/ he electric field 6.0 cm froc/ gdyi*u6u) /ok7bwiljvusg:3: k7pm the center of the sphere?