State the law of conservation of electric xrn 8fp(6 z1vqcharge.

  Is it possible for two negative charges to attract etji+;,il4 )y rl/o7(s:wr l doigp2iz ach other?

  Is it possible for a positive and a negative charge to attract ea0 d+fx(kjsai4 -ro /jych other?

  A glass rod is rubbed with a piece of silk. During the process the glas0c*n nube z3j4s rod acquires a*03uc4nj nb ze positive charge and the silk

  A proton carries a

  The model of the atom shows aq*ek w*54ljyu;d8c)c pexa 1 g

  A neutral atom always hgb)nz 5 w/u,bj )x(iaq)u+ inxas

  An atom has more electronpyw)f1o mx-6 ms than protons. The atom is

  Materials in which the elpghcf.gn dd q4-7wt:1ectrons are bound very tightly to the nuclei are referre- pdh:d cg 4gfq17t.wnd to as

  Materials in which the electrons are bound ylk6olu v12 hx*q rs (r)tri,41v- mbrvery loosely to the nuclei and can move abos-rrv4 o 6h*vt,umyl )x (qkrr1bil12ut freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar.w :z6xww2p2fk The end of the metal bar farthest from the charged rod will be charge wkw6: pwzf2x2d

  Sphere A carries a net positive char hkxvzl; h7) yf2l1nv60cjhg. ge, and sphere 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 stalhg xk l127nh vfy.;jch6 )0vztement is correct?

  How can a negatively iek*tu6q i +6xcharged rod charge an electroscope positively?

  An originally neutral electroscope is brief-:0p qben cul0ly touched with a positively charged glass rod. The electb 0le-0cnuqp: roscope

  An originally neutral electroscope is grounded briefly while a positivecv w q0m u1p;;l0ys6phqx(f /wly charged glass rod is held near it. After the glass rod is removed, the electqqcp(;x/6v; 0psfmy wh u1 wl0roscope

  A positive object touches a neutral electroscope,nxro om/ijvh89 54.:4afb tp:ldiq:t and the leaves separate. Then a negative object is brought near the electroscope, but does no8a:j4/9dp5rin.:v xflo 4tqmh b toi:t touch it. What happens to the leaves?

  A large negatively charged object is placed on anb8jethn.j*nxx h. k7) insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rollsj *hj )nbtnkx7 ..8xeh 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 Coulom x29vntkn76; jj e*upydtw1v8b constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargeaak0q ;iwr 6f8 is larger in magnitude than the seconr 8 wafia06;kqd charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near e39sqp-sn5o 9g za3ue 3em.zdfach other on an insu 3 pef zmdue3oanszs9- 39q.5glated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certa-uph3b bxs +wcm67rm8 o5lb3 oin force. If the charges on both objects are doubled with no change in separatiob38p7cs5uhlbr+ o 6-3bwm xmon, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces ofe-ku t p4hhd.h/8e7ed 8h 7dhhetku/.d ep-e4F on each 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 force F. *kgskfd+:jau kt-i 5 dkim3i*/es 6t/ What happens to the force between them if one charge is doubled, the other charge ismkkdisutii ka 6s*kjdf+/ g5t3:-*/e 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 of 1dkx y ;5s5w;kcgka*i,g iv5i 7.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electronkkik7g ,*wii;5dvxy ag 5 5;cs?

  An electron and a proton are separated by a distance of 1.0 m. What happens tov+ * :bff4yeil the magnitude of the force on the first electron if a secol* fybe+:vi4fnd electron is placed next to the proton?

  An electron and a proton are separaa(aurda.:yz40dr pf7ir-u x2ted by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the proton. -rupuz2(ar07adxia 4 d :fry?

  A point charge of +Q is placed at the center of a sw ns4 6crir1uuqlelb9 5iy728quare. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force ofery4lri2s6b7 5 uu1c 8wqn 9li 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 / bqyk9),aaz-i g9k qxat the centroid 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 mag ix)q9 zb,ka/-yg9qa knitude 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 nowv,upg6 gg a dj-p*x:+l)2doa t a vector?

  At twice the distance from a point charge, the strength of the electric f( c39w+jyc x pc;:dlcbci2im:ield

  Is it possible to ha,udt *j*3hxw6 /qeugfve a zero electric field value between a negative and positive charge along,6ftwj e *hgqux3u*d/ the line joining the two charges?

  Is it possible to have a zero electric field value be s20kn47rsak3u h3zdvtween two positive charges along the line joining the rha0 7kz4d3n3svk2 us two charges?

  Electric field lines near psitive point +9ssgrgz 3a-lo;-y t lcharges

  The electric field showdve5o* c2vnb12bght qwa, ( 3in

  Can electric field linem(444otgk2 y7oyq: .kui cg jjs intersect in free space?

  A solid block of metal in elec6izh l 3c+cs.dtrostatic equilibrium is placed in a uniform electric field. l. 3idh6 zcs+cGive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of9t (9,qvtxvwe-a p;kr8 u4krv equal diameters are each given the same charge, the electric field (E) midway between the cenkwrve,u4p 9 9kq rat ;v(-8xvtter and the surface is

  A cubic block of aluminum rests on a w5o jo2t0a* gsuooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block0 o2o g5tjasu*'s top surface?

  If a conductor is in electrostatic equils+mf9hjy+(sm ibrium near an electric charge

  A positive point charge is enclosed in a hdztf6.xqj40- /itul7tpxs i;a6lt:hollow metallic sphere that is grounded. As compared to the cast4u6t f- qtd0li s6h7; l./i zx:jxapte without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrita30iosz)k* s um.

State Gauss's law.

  The charge carried by one electron is wb:. 8ha dog)nig8kik g t050e$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charfpktx arqb7hc3i)b*e)bf b u4y711,np ; 3fdbge of +2.00 mC. How many more protons than electr x1 r cb* bybhfd47baf,)u b3 31fq7pp;ektn)ions does this piece of plastic have?

  What is the charge on 1mr(yfhwh4 q,y8sd s8 wam+e4 *t 6 p)78iyyrwc kg of protons?

  An atomic nucleus has a charge w+weq+q,9hm wof $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sl 0s fh+9ee2nmeparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the sn +0e9 fem2lhmagnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, kx3h q.0xar p*and the force between them is 1.0 N. What is the magnitude of the second char .rxpk3* qahx0ge?

  Two 1.0-C charges have a force between them of 1.0 N. Hoqk 9rv4+ndo*q0 k kzu.w far apart are they?

  The force between a n*2* j0kxot kz*1ix v-6hlwdd$30 \; mC$ 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 ar /wfs*nov-t x ae+)*pfoi ;0xrj,m s)qe moved to a new separation of 8.0 cm, what is the electric force betwes **/sq) a-r,vtoemf;w )nfi x+opxj 0en them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cha7:rane di 6emi-1weksfy*9 p 6rge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. ps a7nr id1:9ikwy-* ef em66e 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 charge of +mg3)tit b1cz 172nvm c2.0 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 d 1z)v i7ctmgbt2m1n c3irection of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following pofpd;46 w 0kgphsitions: Q1 = 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 is the magnitude of the force on the 3.00-mC charge?ghdp w6kpf; 04

  A point charge of +Q is pl;vy1bc5 vbld*aced 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 is the magnitude of the force that acts on the center charge if a thirb5v;vyl *1db cd charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 mpdx y1k:m-mi bsxdo/no7(pi;(d 32c = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What:p-mbxmx myik1 s 3p(d7 noid;d2(o/c 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 is at (0, 0.10 m); Q3 v (dh:1 mkzq/po3hyc2 = 5.0 nC is at (0, 0). What is the direction of the net force on (z 2cpv:3 hhykdmq/1othe 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an huz/l pul2u4ecw7h (2equilateral triangle which measures 30 cm on a side. What is the magnitude u wz 4/2pcue hhll7(2uof the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separttrtb, g8)q8 rated by 3.0 m. At what point, on a line between the two charges, would it be )gb8t rr8tt q,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 and a +9.0-C charge is at x = 4.0 m. Wheb8 p51z(xsm erg o:oi7re on the x-axis can a ths8(7 1 e bzp:5mgroioxird charge be placed so the net force on it is zero?

  Charge +2q is placed at :obt064x slnxthe origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so to 06sl:nbt 4xxhat the force on it is zero?

  A copper penny has a mass of 3t7qwjtou 7g54 .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 the force of gravity by th(f *a0 p0zeclsek8z:pe attraction of a fixed proton some distf pa:0s kz*ecl8pe (0zance above it. How far above the electron is the proton?

  Two 0.20-g metal sph(v5sx x-s:x txeres are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical char:sxv(- x xxst5ges, 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 isw29q xyk(;eeo nl(e p8 )fhje3h 7om5u the magnitude of the electric field at a distance of 1.079 uolpe3)mf(;ewx h( n8qye h j52koe m from the nucleus?

  What are the magnitude and diwd5j.5ur8t vhrection of the electric field at a distance of 1.50 m from a 50.0-nC 8 55dvj .whtur charge?

  A 5.0-C charge is 10 m from a small test charge. 6 iqs(z7uwvjk,c80 wfWhat is the magnitude of the electric field fwj6s8( i7 vzcqw0k ,uat the location of the test charge?

  A 5.0-C charge is 10 m from a small test charko1vr(/g9 8c;6vm4 5pn 9 j 5lou bor6ihrhlblge. What is the direction of the electric finjr68og 4 vbro(oc rllu5l6p9/;kv1 i9h mb5held?

  A 5.0-C charge is 10 m from a small test charge. What is the m(:gwnkh::t lj4y,w pahu:5 )1.d sqkfvzbl0pagnitude of the force experienced by a 1.0 nC charge placed a0vabf:qku 1p wl:5h.zk( d:4y np:g)j, hlwst t the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance*j4 .ferk . h4 :8a*ibvg2kknqfuq/ca of 4.0 m. What is the electric fielda2.kna8 bfq*kkr4i/:h fu4q gje*. cv at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 m8;( d fa3qwqg0d8 ep egs;ohn:C charge is placed at the 50 cm mark. What is the electric field egsh w 8oa:; g 083e;qqdfp(dnat the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a/ th;hstm o+n4;.jzttatw,a1 -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two chan 4jh+mtta. tz,hw1;a; /ottsrges is the electric field zero?

  Two point charges of +3.0 mC a6il1ess6)ny*1 lbinw nd -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point *enn1i wl)1 ssy6i 6blmidway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.5c4-lkaa4 i t,l0 m. The last corner is occupied by a -3.0 mC charge. Find aaik-l,c l44 tthe electric field at the center of the square.

  Consider a square which is 1 k(/wg op6h,2tmc sr /gg+typ3.0 m on a side. Charges 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)rgtos yt6+/p kgm(2ph ,w/g3c . What is the magnitude of the electric field at the square's center?

  A force of 10 N acts odhp;g h0a 7gq3nals.d6w 23mn3rz:r mn a charge of 5.0 mC when it is placed in a uniform electric field. Whatr a r3mmwzhghdl q02s.;:6p3 3g7dnna is the magnitude of this electric field?

  A particle with a charge of 4h,v+n-r,(cj :; eva lyll3ykm.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 amhhi, x/s d,ps8/w8 jux1 mwb3n electric field of 6000 N/C pointing downward. What charge must be placed on the ball fop,8s1xm,iw/ b m js3xuw8/dhh r it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The baly 9w.-zeas qopmh8:w4r,1 cad l is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field ahmp1 d:r 8oezscq.w- 9a,wy4?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is t*fff,4l f.el*ck1dz t mg7(wd he magnitude of the electric field 5.0 cm from the spht1f lmef*fkdzg.4 l*,dcfw7( ere's surface?

  A metal sphere of radius 2.0 ckc ev*rgc )(1p5mi r;q9m qm+cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center cvk1 g *;m 5c)r imqmprqc9e+(of the sphere?