State the law of conservation of electric charg ;yv.7v32z+ fgdlfs dse.

  Is it possible for two negative charges to attract each oth-w4la7cl*i8z2 ouf q aer?

  Is it possible for a positive and a negative charge tp -)w76bpi;o n (krfjjnbv(c 8o attract each other?

  A glass rod is rubbed with a piece of silk. Duriim ynk8) 7/kiqng the process the glass rod acquires a positive charge and the s /i7qkmn)ki8 yilk

  A proton carries a

  The model of the atom sho0qtk42b1 izv fk1 i/uhm ,;pcdws a

  A neutral atom alwayg7df 9g3lf5 hhs has

  An atom has more electrons than protons. The atoj3s 6lhfm nf8fh+h iv:g6*g)nm is

  Materials in which the electrons are bound very tightly to thz6,tz 1 e e8.lbmue-6dj ujivl/mi3f ;e nuclei are referrl6m8z- 3zd6 j;bljme/1ive i,fe.utued to as

  Materials in which the electrons are bound very loosely too9: fbnv.q zy0t7ay.j the nuclei and can move abouzvn:j0.by.ft ay7o 9qt freely within the material are referred to as

  A negatively charged rod is brought near one endm.k rglye(/o4qs)hs4 of an uncharged metal bar. The end of the metal bar farthest from the charged rod willk qrg.s)smy4oe(4/hl be charged

  Sphere A carries a net positive charge, and sphere B is neutral. jugt 4 5u:8c 8zhbj g5z mbispuo*i(*em9c4f; They are placed near each other on an insulated table. Sphere B is briefly touched with a 8(j 8pbzetm:*sou 9mgbu5*icf ghj 44uc5iz;wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posit)3fgmjo)b 3p(sw8o wr ively?

  An originally neutral electroscope is briefly touched with a positiu dy1luc 4:p;mvely charged glass ro mp cdy41u:lu;d. The electroscope

  An originally neutral electrk;m ho**( swhboscope is grounded briefly while a positively charged glass rod*ws hh* km;(bo is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neu3ufro /nk gsisx5w 9i5 o5*+wptral electroscope, and the leaves separate. Thenrisp o+5w k5w9/* ng5s3xof iu a negative 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 insulated fiar 45xuhnt8wi8b h0klf ;uqm0 , ewg9*2o4etable. 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 thei4la 5ue;htr k*,w ewb xqhg200fm48i f un89o 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 Coulobzc7p7ej g) .8(q iyrjmb constant $k$, which appears in Coulomb's law?

  Two charged objects are sepa04d6qf/qus /ua8(*zgvn k gn rrated by a distance d. The first charge is larger in magnitude than the squuzk*8/gf 4( q0rannd/vsg6 econd charge.

  Sphere A carries a net chbczb c)cwlg1-w -an 54arge and sphere B is neutral. They are placed near each other on an il-5gc n abcb 14cwz-w)nsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges o bq/n w2e+8upfn/bc4qn both objects are doubled with no change in sepp2/bnw +q 8 /ebqcfu4naration, the force between them

  Two charges are separated by a distance d and exert mutualr74e tgp*z ab0 attractive forces of F on each other. If the charges are separated by a distance of d/3, what r 470pb*zegat are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to theqblhrn20m; 1z z7.1 cgcszvj uh64za: force between them if one charge is doubled, the other charge is tripv4b7n 61z;0mgl:jq1zzh s2az r.hcculed, 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 arw9 ,/vg4cauih6c /qh ib)y+gjp h*vb7e separated by a distance of 1.0 m. What happens to the magnitude of hu,h bpj647 g+*cib wyq/v/ vic9hg)a the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated0nfx 5, 2 vmlcag(c-uw by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second elm2-, afcvw cxngl(u05 ectron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m.klm-0issp*d70k cg: 4s uubo + What happens to the size of the force on the proton if the electron is moved 0.50 mol0c0:k 7s +msk-p gibudu4*s closer to the proton?

  A point charge of +Q is placed at the center of a square. When a secondn8 bp(dpt7a6 4lc/gub point charge of -Q is placed at one of the squaregbd t4laucb6(p8 np7/ '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 electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q igcbs8l 7d)1yl/q .i 8zw8cg,qmt . keus placed at the centroid of an equilateral triangle. When a second charge tgmw8l8gli . z,8u/)qksy d7.bc 1 ceqof +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 charge of +Q placed at one of the other vertices?

  Which of the followin2+6h jgpudip)g is not a vector?

  At twice the distance from a point charge, the st c+-j 3cem, fd1jqnnl*rength of the electric field

  Is it possible to ha3 3t sjcb5g6lwve a zero electric field value between a negative and positive charge along the line joining t3g6sc5b3jl wthe two charges?

  Is it possible to haqv+hxvi80yho : tl 62zve a zero electric field value between two positive charges along the line j+lvx6 qyh:2zh v0i8 otoining the two charges?

  Electric field lines near psh7)onx;1d8hpii 24 /pi. svlr0buzrc itive point charges

  The electric field shown h8dl ,qwzq7;+ m0 gcby

  Can electric field lines intersect in fw k1sg(n0.t bvree space?

  A solid block of metal ines:ks8ux*.+uvb+k 9z onb 4jo electrostatic equilibrium is placed in a uniform electric field. Give a statement concerninboznj4 +su xe:8v9ks*k+ .buog the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere o f:ocv(.yw lc,f equal diameters are each given the same charge, the electric field (E) midwayoc:l cwf y(.v, between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regwg;hwzzl- u/ +ion where a uniform electric field is directed straight upward. What can be said concerning the charge hzu+lw;g/z -won the block's top surface?

  If a conductor is in electrostatic equilibrinh snu)7xh k;t)k0u p4um near an electric charge

  A positive point charge is 5 oru :;ydrvl8p)3* v-zkgn rhenclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere,vlvr8:zpr ;h *53nkr du)oyg- the electric field at a point directly above the hollow sphere has

State three properties of co5wdzuxima 6m5 ik07kso/. j0ynductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron 8. *v2l2xs bqxzcp xb 23y86gnt2wdz eis $e = -1.6 \times 10^{-19} \; C$. 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 more proton)askc41* rf gls than electrons does g 4)lk*csf1ar this piece of plastic have?

  What is the charge on 1)i bter20m1b g*q1bbi kg of protons?

  An atomic nucleus has a ch bebl,xl31 gq(c a.6qoarge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatedbx /+ev)adl-aqgr9j ( by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electedxav l+g r(9jb/ a)q-ric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 Njk nhxn:34e.sr) m4ala-wm a2 . What is the magnitude of the secondhax.4 ae:2-aw3m)4kl j nnm sr charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart nogh* f112 gr9gujyt6are they?

  The force between a a: uh32qhvekyl9 l(v9$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiallyqbllzay* we/+hi )eh0p5-9ns 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 i5h)qw 0 l/l nsy*z+eeph 9a-bcm, what is the electric force between them?

  Three identical point charges m t:v4w2xqakia6i+br23 -j ym 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 cm, and the third is at the 100 cm mark. What are the magnitude and direction 3t ma jxk:+wvq-i2yar64 ib2m of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on thwcsui(i1l1 c3 e x-axis. A charge 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 electrostali (scu1c wi13tic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 =pm;2a-4tuy 7/ xf2mv*inmk jt 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1fitvu/2j-ma x *myp4nk;m 27t.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at th xx zj0go0dfu0( yc;q9e center of a square, and a second point charge of -Q is placed at the upper-left corner. It is obsez d009(xjoqfugcx 0;yrved 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 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 at (0, 0.10 m); Q3 = 5.0 nCk0mzt )io.f4i.yg j2rg/ eg. w is at (0, 0). What is the magnitude of t2. /m) gfgi.oet0w.yigz j4r khe net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = ,.*p,nb gdb)y xwwva4-1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net foab,*.ww)ydb4pn ,xvg rce on the 5.0 nC charge?

  Three identical charges of 3.0 mC armj5ts4jiy/ w 7cm6mkho ih/.+ e placed at the vertices of an equilateral triangle which measures 30 cm on a side. Wm+tims5hhm/ jc .o6 k47 iw/yjhat is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q andygmyd 6(cgup5byg x 5:8;dxk6 +4Q, which are 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 acting on it would be zer6ugg ykyp xd8;yx:b cm(6g d55o?

  A +3.0-C charge is at the origin a;jfta9j*8a j5vn 5yc*g(jawnnd a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a th9*a v 5fc;j*antajj5 jw8nyg(ird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origibq:3w:dotv 7ty*o/ p4 nv)ma in and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so thaw4*:vq 7 p i:do3/oym)atnvbt t the force on it is zero?

  A copper penny has a mass of 3.0 g. A total oi+rfb x tbsvcf ;4k:/:f $4.0 \times 10^{12} \; electrons$ 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 again)ql2eui-c6;8 ucim de st the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the i-e6u8qd l2 ;uci)cme proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threo *gpizlu7.y8ca *4fol:a ywy,8hqqh6 zj*: yads which are 30 cm long. Both are given identical charges, and the electrostatic repulshz.p l88i aoo: c 74y6*qywa*fl,:ujzgyhq*y ion 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.: afyr -; -dz6qa2pm sm,g9tiq What is the magnitude of the electric field at a distance of 1.0 m from the n zqsqm ig-r2p;a6tm9f d-: ,ayucleus?

  What are the magnitudzlbxvrp-yt02a* r6e h9/ j)r je and direction of the electric field at a distance of 1.50 m from a 50.00jplx * tj)e2v/6arbhr9zr- y-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magtss867 +)tbj2fsnzdy p 4z3d sxi8g 7nnitude of the electric field at the location x)8pn f4 2gjszsd 7s y7d s+zt6tbi83nof the test charge?

  A 5.0-C charge is 10 m from a small tdibmqm;7f g j+q v)7y,est charge. What is the direction of the electric fiejd)f+mbg q 7,qmy;7 vild?

  A 5.0-C charge is 10xm ,vyzx4zs2xfj 328vyof 3uf)s 0.o r m from a small test charge. What is the magnitude of the force experfysox0jox34z2uvz28vrm s .3 )yff , xienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a vac :u yxi*;/zq/;x bpdolue of 3.0 C and are separated by a distance of 4.0 m. What is the electr/ b x *;y;:pdoquzxi/cic field at a point midway between the two charges?

  A 5.0-mC charge is placed at thep wc2 rpliwp36f004 ku 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field atwr6fp40uip02w lp kc 3 the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and 9n01z tdemuade x(9y/xy c .o7a -4.0 mC charge is placed at the 50 cm mark. /cuya91do7 09e(tnzxxd .emy 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 x = 0 and x = 0eew*vy,jzh0 dsym/ gwtw/4,x1 a bu 99.20 m. What is the magnitude of the electric fw9hwjwa /9y ,yme*4v/ exdbg ,uzt s01ield at the point midway between them?

  Three 3.0 mC charges are at the thre .bjltrv69 ohsm w 7-iy-hka/2e corners of a square of side 0.50 m. The last corner is/ j-sh.kb-oy9 w7 lvhi6tmra 2 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 pl/+blp/+jl6d1 bd umjs aced 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). What is the magniml+/u1 pl/s6dbd+ jjb tude of the electric field at the square's center?

  A force of 10 N acts b u:r1p(tg: xjyiu7jji.zb3;on a charge of 5.0 mC when it is placed in a uniform electric field. What is the(jr3 jzi 7:tbup y1bg.i;xu:j magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass v0kr;x:vdlh h ye+ c/n2l4sy5of $5.0 \times 10^{-3} \; kg$. 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 f*fr+(ktjs v51szdy)6000 N/C pointing downward. What charge must be placed on t )j5*+srdty z 1(kfvsfhe ball for it to be suspended?

  A foam ball of mass 0.150 uuv srz2irsh ao/6-8)g carries 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 s ui2 ro6has8-vzu)r /of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Whcn8a b0tt tbmr 0a;5t,at is the magnitude of the electric field 5.0 cm from the sphere'sr0 8t a5t t,abm;bcn0t surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC.e00 cq5dq8pgf What is the electric fiel5q 8 f0gc0pdqed 6.0 cm from the center of the sphere?