State the law of conservation of electric charg9+ v1pt6ldvmjgtkb7;zcuw)p90q 6 aqe.

  Is it possible for two negative charges to attract eacp6 jrbjf k rn-u+vc m6-0u-cb/h other?

  Is it possible for a positive and a negative char1vfdkee *v6r n-:;ara ge to attract each other?

  A glass rod is rubbed with a piece qsdp8qo4z1 6yvp, 1uoof silk. During the process the glass rod acquires a positive charge and thequq,64po1 op 1yv8dz s silk

  A proton carries a

  The model of the atom show/m:3pst(j6 s1 zczs zys a

  A neutral atom always has82cu +ooxdsx zcy* u en9blya.mu+21+

  An atom has more elezsp+ 57tfh bc pmy5yc5)dr*w5ctrons than protons. The atom is

  Materials in which the electrons are bou4hd v x0 5fhr.8slko2dnd very tightly to the nuclei are referred tor5f4dds h0 vk.28xlh o as

  Materials in which thei; n* 1b thzss38m-ovt electrons are bound very loosely to the nuclei and can move about freely within the material are referred to a*;8-vntbs s 3m tz1oihs

  A negatively charged rod is brought near .dppvd)9n/d p) v/kz0yl (q suone end of an uncharged metal bar. The end of the metal bar fartsndv/pd pk y().9/qdvl 0u z)phest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plach7nm /+ yi0r9yupi 3zah.oaz :ed near each other on an insuhyazz7+/orunhy3 :m a9 .ipi0lated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an ( l3rb 49uiac nk0zf7e55r rx jjpw03jelectroscope positively?

  An originally neutral electroscope is briefly tsv(cz /e3b7clq*a *jxouched with a positively charged glass rod. The electroscop*x c s alvq3/*(bj7czee

  An originally neutral electroscope is grounded briefly while a positively charge9)ar .yuox; +zc qp9hed glass rod is held near it. After the glass rod i9ry;ceq)za hpoxu9 . +s removed, the electroscope

  A positive object touches a neutral electroscope, b+2 wdf:85+mh6 bd hhyzqop p;and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. W+pb28ydf+hh5 mq p who6dz;b:hat happens to the leaves?

  A large negatively charged object is placed on an insulated table. A pu/ pk6caobjte73 ) *yneutral 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)7bk* 6cj/y taou3epp 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 Coul3jwwx*2 wlac8 +acq 9yomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separatksyb6q j;cq2 aljp35 1/mree, ed by a distance d. The first charge is larger in magnitude than the second chaqs mar 6p;2lj/q31cb5,eey kjrge.

  Sphere A carries a net charrk;hsmr*/6q-)ictms . vt a8 cmp lp3*ge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force.trm-8*sv p i6mmct) * /3rkcqsl pha; between them?

  Two charged objects attract each other with a c c4uemkc f,lcxtej78 * .(yd+vertain force. If the charges on both objects ar7m8dy .4c ,c( kc j*lxv+etfuee doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcec-)udw5 wttw:s of F on each other. If the charges are separated by a distance of)-u :wwt5wtc d d/3, what are the new mutual forces?

  Two charged objects attract each o)rugak, 5mo3jwm 6h+ rther with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance betwee h+ar,ro6)3w um5kmjgn 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 : h;qjyqwuonq/ 4)( dxdistance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electron?/wynud(q:) 4q j qh;xo

  An electron and a procsbjb+j+ j)*b ton are separated by a distance of 1.0 m. What happens to the magnitude of the force)j+* c sbjb+jb on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance ofvmxc6 /uon 5+1 lili1r 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m c+lcvr1u6nilx 1o /im5loser to the proton?

  A point charge of +Q is placed ar;8cu jv4ekq) 01styqt 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 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 );tus8r kq0j y4v qc1esquare. 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 centroid of an equilateral triangle. ktdk8 9r83c apWhen a second charge of +Q is placed at one of the triangle's vertices, k tcd8r3a98pkan 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 not a8j iu9 *)7bpl+5eizl:mfwtp p vector?

  At twice the distance from a point charge, the strength of thmu*rm g(zxn9(nt :7jw s(x6yje electric field

  Is it possible to have a zero electricwu;kzcz bh:o +d4 e-tmu;sn-7 field value between a negative and positive charge alongez-mb47st hw+;-;c uudn zk:o the line joining the two charges?

  Is it possible to have a zeroo f*f4 dlet+4d electric field value between two positive charges along the line joining the two cdffd*l 44 te+oharges?

  Electric field lines near psitive point c.gf7exu;; p r d r2ek-z1h5gthharges

  The electric field shownh azp9;6zoi5hx sf 4a h2mk97c

  Can electric field lines ,zz mxd-rikn+(-s6k l2;lvheintersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unif5rir 0w5 f hum4nuf,lhfv -h/*orm electric fiel4w/ u,hnl*h 05iu5hm-ffr frv d. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of eq r3zaa+)8zql74 vonqo ual diameters are each given the same charge, qr)3nzlq+oav7ao 4z 8 the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform ed;.1:uz0bdbiw s: aw olectric field is directed straight upward. What can b :wwabod.1bs 0dui;z :e said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrsgrp: /kl2u*i7 d 2agnium near an electric charge

  A positive point charge is enclosed in a hollo fe/::vis sv,jw metallic sphere that is grounded. As compared to the case without the hollow sphere, the elev s:j/iefs:, vctric field at a point directly above the hollow sphere has

State three properties of conducto6 qlgxo5 hx(4irs in static equilibrium.

State Gauss's law.

  The charge carried by one electron is j9hdock-(b 0 k$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of mc(9+r3g)s( gtq g;ep*b l;7cwsylp z+2.00 mC. How many more protons than electeqp;mp*cy73 sg l g wlbg(c+z;r st)(9rons does this piece of plastic have?

  What is the charge on 1 kg of prwm quw rx,wd do)i588)z*a+eiotons?

  An atomic nucleus has a chargepitg/: pbtfp9 2z8c6n 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 values of 2.0 a. -8b 10v ack8gj;i3tbhiyu1z 8eqnfynd -4.0 mC, respectively. What is the magnitei ju1q8 8gc.81fty -k3vzbanyh 0i;bude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force l x:jbp9wi24c3 au*usbetween them is 1.0 N. What3:ujpuwc six 49l2 b*a is the magnitude of the second charge?

  Two 1.0-C charges have a force between thex i)k:ac,*su v+7bo glm of 1.0 N. How far apart are they?

  The force between a ( gsb6 i.bped +ts5t,u2hi 0-9d gjzfh$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, ec2bzdwu -vm 2fc)3 3zax gw35pxperience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between thewf cd5c v)3xum- wbazp 32z2g3m?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chz;5lz x0cnt g4-9zzbs67ey odarge is at the origin, the second to the right at x = 50 cm, and z -;9n zsoz l5x64cbzgetd7y0 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 charge of +2.0 mC is placed atkx8ys+r 9uc:.mir. tz 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 the ori..x z:i98umr r syk+ctgin?

  Three point charges are locatedob*-bw,nhz i;.k 1eve at the following positions: 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 char*on-ze,vbkb1. ;w ehige?

  A point charge of +Q is plac s*b9g;bsx -lque ;f;ded 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 thirgq b-sx ;dulb;f* s9e;d 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 cojizq/clf7l;b 5 -j1 at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). W-zcoll i7;jc fq/ j1b5hat 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 aq n ujjx +37uk-sz17kr*mq hw9eof 5y9t (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directionw k-u3yno j uk195frq+7me 9*s7zqjhx of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateb2n3vx )i4atf .sdv/y ral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force f2y ) 4svb3x.d n/tiavwhich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which yqe( ;kvbsp7mhy(t .0are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge qp((yk.7tev h;m0ys b of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the t08u -x- s2pn ooyj,qkorigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed s,uytjo-8s okx2nq- 0 po the net force on it is zero?

  Charge +2q is placed at t/x/ wgu yx2/gshe origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force u 2/gwygsx/x /on it is zero?

  A copper penny has a mass of 3.0 g. A totalr 0k4jw.ntaf + 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 th slsiunr1. u-zy1 8q;ye force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is th;8qzi1 su1rl- nyusy.e proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduc *y9ut)j2z1hxaxyef 2 ting threads whichzt2u *xaxy j1e2) 9yhf are 30 cm long. Both are given identical 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 +4 pw*oi;zv ysors/3*7h 85qkotvi0; ig0e. What is the magnitude of the electric field at a distance of 1.0 m from to7h /kisz8* iog0 vv wps;3y;i5rtoq* he nucleus?

  What are the magnitude and direction of the electric field at 697- g binhl 5sl2ziq0f9ifxxa distance of 1.50 m from a zli9lfxf6 ib hg07 xi-5n92q s50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the :k/*gteeczq)n 3c cfv65 zk*kelectric field at the locati/n cz gv3* tce f*)qc6zkk:e5kon of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the (w0qd2e4;mv0to m xok ;a8oehdirection of the ele8 eov;txo;4 k0w 2hemm(qdoa0ctric field?

  A 5.0-C charge is 10 m from a small test cu1qtvw be zgu53mjeogda;7n / ; 9g-f8mexa .5harge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chargad;5m/ tj.u7z nb9evew-ggo xeu8af1 g5;q3me?

  Two point charges each have a value of 3.0 C and ab jg)tr*hj,xn ;dtc-f6f (4bwre separated by a distance of 4.0 m. What is the electri g-bncd) b,rttwx6(jh ;*j4ffc field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a metervn tnyyiw;)8g p nom7c5o a2. 3x9w6tu stick and a -4.0 mC charge is placed at the 50 cm mark. What i7 y2.mt ntcwvn3y9o5i aw;n6up8)og xs the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mbwcnid o:a5*(g.m b .oC charge is placed at the 50 cm mark. At wb(m5*io .ac dwnbog: .hat 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 x = 0 and x = 0.20 m.:hsn5r t4 xyb 8gd:6la)6q :datz p/fx Wha4)h8ld:6qsab:ytdxtx5 gr:z n f/6 apt is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sidefxmzx u6-lycq 4; sm,; 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of z x lq f4xmmc;,y;u-6sthe square.

  Consider a square which is 1.0 m seq0zwp b: v;wx0 .jlfdh(*)i 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); e qjlw f.xw:vs 0zdb0();pih*+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 .oefv8frk01m.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric8e1m.fo 0 vrfk field?

  A particle with a charge of 4.0 mC has a mass oflfapn ew.p3 v.w; kr/fnoa+7; $5.0 \times 10^{-3} \; kg$. 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 poin/dwefb50jx hhy 3e(4g0cz mtu 6.nnv6ting downward. What charge must be placed on the gm6eyeb/w z4n cdnht0x63j v(hf50 u.ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -an4j38w uj61jjz4us g dhg. c,2.00 nC. The ball is placed inside a uniform electric fielgng w.d4c,1j u 3j8suj64zjhad, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radio m,6pnk84hd2 qza,f4to rg3 hus 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from tfdo4hh4tpo 8 , 2na rkmq6,z3ghe sphere's surface?

  A metal sphere of radius 2.0 cm carries 8 9vc7xirs 6x *tst ysnlqoct1j5q*)( a charge of 3.0 mC. What is the electric field 6.0 cm from the center of n9xl5s( iqyscj 6q8t* *)tox1rsv c t7the sphere?