State the law of conserb0 8+: yqee o3)xhczowvation of electric charge.

  Is it possible for two negative charges to attrv: gs8 s8 a j:bm,(stm*p3mfs;*y alacact each other?

  Is it possible for a positive and a negative charge u pjv r66oi uolyz5)rxn:p y8+ 6r*tv:to attract each other?

  A glass rod is rubbed with alt4m4 q-/ 2ttdd:awec piece of silk. During the process the glass rod acquires a positiva ldm/4w2tett4c: d-qe charge and the silk

  A proton carries a

  The model of the atom shows uskwnson o7n q+ 4/fh6 13wqr)t4zx5 j6qvjr; a

  A neutral atom always haw4qj va3,bov+wvd 4 6q:0sbuphc,a; js

  An atom has more elec x38hae6axf(a4aj/8; tdkzcqtrons than protons. The atom is

  Materials in which the electrons are bou)9is bguvg;ib( 4j,ta5rx6ovnd very tightly to the nuclei are referre(r xgit,u 9;)i6 5jo4avgbvb sd to as

  Materials in which the electrons am;4k*)udnre kdq+, t are bound very loosely to the nuclei and can move about freely within the material are referred t,*4n +tum ddrk;) qeako as

  A negatively charged rod is brought near one end of an uncharged metali8 f-niw8r3qzj 5 uqw* bar. The end of the metal bar farthest from the8*u8 q- iz5n3qiw wrfj charged rod will be charged

  Sphere A carries a net positive charge,ev4 0e2 mr3eiw and sphere B is neutral. They are placed near each other on an insulated tabeiev e 2r4m30wle. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chargemb+5//vp *ladxfq3o(p*za qk an electroscope positively?

  An originally neutral electroscope is briefly toucz j02-y sd76ynf,vn-v 4uhw rghed with a positively charged glass r,2-67yvynu4rfsw z jvn-h d0god. The electroscope

  An originally neutral electroscope is grounded briefly while a positi,d 8ufza b.xj8vely charged glass rod is held near it. After the glass rod is bf .jzd8 8xu,aremoved, the electroscope

  A positive object touches a * l/6kjk9zl+5n ;jim) gsbd npneutral electroscope, and the leaves separate. Then a negatbsjg *;k/ +mn kd6np ijl5)l9zive object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insu+3q - 6qfxqc *2dbx62jhz3dd(bpkpb jlated table. A neutral metallic ball rolls straight toward the object, but stops bek-xqpcqbj*bx ( qpbfdd63j2h2 +6d 3zfore 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 object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb con6a ; yewb;c xk+w.rrn3stant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first-*zhk:r) 0 i,rpf bg78uflnlo charge is larger in magnitude than tiub7 l o 0 8hpg*ln)rzfk:-f,rhe second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placuj2b3 lpt 6)fcr**pux ed near each other on an insulated table. Which statement best descxr32*lpb)ptu6cf j* uribes the electrostatic force between them?

  Two charged objects attract each other wielg x a7:ut6o: ;ljy.v (rg0nqth a certain force. If the charges on both objects are doubled with no changyg0n6tju:.vaol :;l g (7rqex e in separation, the force between them

  Two charges are sepa ,s28 8; gy1ugxzfq;sahus.qjrated by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3,2g sqsgh8 8juq,f1a;.; yxszu what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the forcq erz/5xm,/ms e between them if one charge is doubled, the other charge is ,m5s /q/zxmer 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 1.0 m. What happezr 1s1oek1bb *ks*am5ns to the magnitude of the force on the proto 1kemaso1b1k 5bz*sr*n if a second electron is placed next to the first electron?

  An electron and a proton b rzip21s5pyg* y 2-mmare separated by a distance of 1.0 m. What happens to the-sy221r g pzp*5m bimy magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a pro6nf;:-:rm r3jl1 cb e(qquiiq ton are separated 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 pr uqb:l;-jcq6rmq31rni( fei:oton?

  A point charge of +Q is placed at the center of a square. When a second im psr l2p/)j1 id2wa2point 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 2 rpipsl1 w2/ja2dm)i 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 centroid of an equilateral triangle. Wh cjr+ p,*x*h9rpqun0cen 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 center charge due to a third charg** crucx9p ,jr0+phnqe of +Q placed at one of the other vertices?

  Which of the followinb0;3qwt-(h hkq nlg2cg is not a vector?

  At twice the distance from a point chargev-ob4 x8jsfe0 (in-i3xk cif8, the strength of the electric field

  Is it possible to have a zero electric field vansz8qa76 m9z f*fl0yb lue between a negative and positive charge al fzzl6sa0mb8 y79 n*qfong the line joining the two charges?

  Is it possible to have a zero electric field value between two positive chard ;bpl)( lijc8ges along the line joining j l(i cb);8ldpthe two charges?

  Electric field lines near psitive pointio j; sr2)gso49qq6an charges

  The electric field show ,ylr8w-)x tw4gpn wi(n

  Can electric field lin7*p3wv/rl(nfp3 f py;l wpjrel-jo )/es intersect in free space?

  A solid block of metal in electrostatic ehu3w 4pv pc5/)7hqq rrbx8nq)quilibrium is placed in a uniform electric field. Give a statement concerning the elect4b 5qp /q3hu7r)8hcx n)qpr wvric field in the block's interior.

  If a solid metal sphere and m,to,.d(/a j:ggqznva hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the a (odggq,n vm.,t/z :jcenter and the surface is

  A cubic block of aluminum rests on a wo*+ hawr-p( 8iwcr(efuoden table in a region where a uniform electric field is directed straight upward. What cah ri (8r auwp-fewc*(+n be said concerning the charge on the block's top surface?

  If a conductor is in elects+a+1f ju0q) r,et8pbo z+c(b xe:pwtrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metalliq:) z08d v nwar*wllrjwh4-o x3fi,6ac sphere that is grounded. As compared to the case witl4 lh*qawfz:n0,xvw63 aw jo)ridr-8 hout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static7 d1t)q69o7 kp(upm 6kozzw sa equilibrium.

State Gauss's law.

  The charge carried by6kvfx7 5/n e izhn:haw7w p:k 6en+s.luax+ ,x one 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 chx.*n nybs-4gvarge of +2.00 mC. How many more protons than electrons*bgs vn.-nyx 4 does this piece of plastic have?

  What is the charge on 1 kghj+1b kze)p7y of protons?

  An atomic nucleus haywzx/3ch+1h e1 ss og,s 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 values of4xio( q+4 fh4r(uieko 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between4k4hoq4if(xur o+ (ei them?

  A 1.0-C charge is 15 m from a second chae8qm gh2rppj41 n g z,2v*- il4ffsbx.rge, and the force between them is 1.0 N4 2zprx8mbf.- ,hg 2*g1jifnqvpls4 e . What is the magnitude of the second charge?

  Two 1.0-C charges haj 9hpp4,x cmt(ve a force between them of 1.0 N. How far apart are they?

  The force between a ,w8l+x o2r defoc )lfi xq5o+:$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, i+uiuqcweper u p0wt6-c :4,o 6nitially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation ow-ioep:,+66 4cu rcuepwqtu 0f 8.0 cm, what is the electric force between them?

  Three identical poinb0)q7u+ stns it charges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 sqtn +0i u)sb7cm, 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 charge of +2.0 mC is placed at9cbqqh66*y posyk 4e /to qh0- 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 q0qhq pk/*ot6bh 9-syeyc 4o6on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC ati yn9ej+qqp .8 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-mij98 npqyq. +eC charge?

  A point charge of +Q is placed at th wt j5h(vpzr(7o u+5+t53 rbx jc8lheje 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 third rjtjo w3bv57+8 zxlrhc+5e5(puh jt(charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); ja vjw:ju7 9n6Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on7aj:jvuw6j 9n the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0tyrby non-*5:7 2fg 8)fe wzwquwe75h.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the nz-7n8g:wt*u7) foybh 55wyrfn ew2e qet force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equpvd(w7+0omi0,yj6 7uszmof.e1 o bpk ilateral triangle which measures 30 cm on a side. W06 o evmdo,0ym +ki17bo7(uzw pfjp .shat is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sepa)6jd4dg)xrx. 5 ut( aea na)prrated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Qr ) egxud)ranapj )d546.xat( such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the or n2xhkb*t;f)3 w-s rf.qphr40aqps pz u131vgigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a;*r-ssbp k 3v u qf.zf0gq1wr)t hp13axhnp42 third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x t):4z ywp()+ 1 jxf9iqm hhn3v9yvzbh = 2a. Where can a third posi34zjfyvxhy b1p9( 9wtmiq z): vnh +)htive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.05*hbna-c/f sd 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 byo29r c yi(7nexu bp t .w.uj*4/20;utbnhsov f the attraction of a fixed proton some distance above it. o 2xh puf/4vus.t (uw.trn;*ijebb2 0o 7nc9yHow far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threcvhng85f;s(swb +o c:ads which are 30 cm long. Both argc8wsf5(sh:;vbn o +ce 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 +40e. What is the magnitudezo-y m /glj* 4mcktpf)0jgv7/ of the electric field at a dismj4f/ mglpv)0 *zokytj7cg/ -tance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field a0u)vsl1ww1mnqn0g :9qbq: 4clepi / at a distance of 1.50 m from a 50.0-nC charge0vs1/0cqw9 pb4il ew): mqanq 1l:nug ?

  A 5.0-C charge is 10 m from a small tcf9m fnyvv.:f;g. cq:est charge. What is the magnitude of the electric fieldm:9qvff c .n ;.fg:vcy at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of tj- at2r,iu o6khe electric fiela 6rk ,oij2u-td?

  A 5.0-C charge is 10 m from a small test charo4r,c1pq noe o4y7xk8 e,7vccge. What is the magnitude of the force experienced by a 1.0 nC charge placp n,7c4 847ooeyvk,oc1c xerq ed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separb,k - /liasycr0+bun.ated by a distance of 4.0 m. What is the electricy-cb ki,l/a b.0+snru field 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 mC charn4rosgxk kv)n3()ks k9 *)r ztlby 52nge is placekzlno9ss) xk4)nrv knrk 2b g (y35t*)d at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stiqjw64t y.u+szx yt01k /qb4ol ck and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two chzyj4o06b1l tut 4xy.qw+kqs/ arges 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. Wh3*v0h do /iqkcat is the magnitude of the electric field at the point midway between them?/ ihv*coq30 dk

  Three 3.0 mC charges are at tza6 xo 8 :3maxts.un7the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squar.:z tmo86xstx3a un7 ae.

  Consider a square which is 1.0 m o xh3,w3b itg,dn a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0);3bwh 3,,gtixd +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 elv.u kwlk ar;awlbd (4 (.r* .wqx19rcpectric field. What isk .cw4kxb rr1pwl(.w*(ul; v ad. 9raq the magnitude of this electric field?

  A particle with a charge of 4.0 mC has ac)2cpu5. cs af.2-hvsmtd:c g 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 k xq3v (z0ffdt/k8k*m placed in an electric field of 6000 N/C pointing downward. What charge must be placed on thd*zvk3x(mfq8t / 0kf ke ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The balldo5w+e naiay4o4l l.* is placed inside a uniform eleyinwo.+oaed44 l5*l actric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10i0* rp1x-g;mf)f ndn s0hmpz+ cm carries a charge of +2.0 mC. What is the magnitude 0;fmp1rx0h*f i-p) g mz+ nndsof the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radbw;a-gnoyvi b/o4 /ub01 dvr/ius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of t ybig/dno/v aw -vur1;4o/bb0he sphere?