State the law of conservation of electric chargpsw93i*lpc8eqw2d6z e.

  Is it possible for two negativemi2/yzp6u99dupp5y k charges to attract each other?

  Is it possible for a positive and a negative charge to attraekqmx b33m2o /ct each other?

  A glass rod is rubbed with a piece of silk. Duefb xe*an+;0 faf- 9phring the process the glass rod acquires a positive charge andaenef9bf*f; pa -0h +x the silk

  A proton carries a

  The model of the atom showslby u.cmzjeo211 u q6r,: ixv; a

  A neutral atom always hasno +9 a9fg)lzb

  An atom has more electrons than protons. The:.wv nb1wjp6)ll 4pg g atom is

  Materials in which the electrons are bound very tightly+ 8v- dyb6c*0n:bc)*t vx:o nfxho ibg8 hzb-l to the nuclei are referred to a 86*nvb h-8lbigh:booxc-f) *c x:y n+t0 vzdbs

  Materials in which the electrons are bound very looswtkia.5x5 . (;qlp*zx d duhy3ely to the nuclei and can move about freely within the material are referre.x.dy 5* u3 wai(zht;kdqx5pld to as

  A negatively charged rod is brought near one end of a*p5 gs+mz jty7n uncharged metal bar. The end of the metal bt75 *z +jgpysmar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Tazq + h1p(kxo0hey are placed near each other on an insulated table. Sphere z hpo0(+1x kqaB is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively char/8 yyn8m +jz)v risd:gl 72raiged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touch4.i focrmggyv (e195df3.c 6 l a1pxowed with a positively charged glass rod. The electroscopev xo.yg1431(ei.fg9fmw drlcapco 56

  An originally neutral electroscope is grounded brieflyhf.hl:jl5yv 2l z+b r8rnb01t while a positively charged glass rod is held near it. After ther+8th b2l0 5bjhryf1:l. n zlv glass rod is removed, the electroscope

  A positive object touches a neutral elec be qta8hg6n-0troscope, and the leaves separate. Then a negative object is brought near the e0e g86t-an qbhlectroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral +/ee(ru sk;bkmetallic 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 the negative object. At no time does either ball touch the negative object. What ke;/ e subk(+ris the final charge on each ball?

  Charge is

  What are the units of the Coulombi:wmmk; cr( p0 jphb) dm-qp29 constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is la81lg,2i4 q ;-ut azxu91hzyxxy y4tdhrger in magnitude than the second chart,4y- z ux ha;yxu11dhgy4l2x9 iq8 tzge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near yz4d:rf ao1 3heach other on an insulated table431afzhyord: . Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a ce)cmtd k75jrp21q2 d +gt5s ro7ms7xcrrtain force. If the charges on both objects are doubled with no change in separati7c7o5mdg 2crm p + j1st7qr dx2tr5ks)on, the force between them

  Two charges are separated by a dijx3 opv6j2zd :9wd8 l+) hm8s-djet eistance d and exert mutual attractive forces of F on each other. If the charges are separatedw:e-el2imv x8j )9ojtdjzds8+ h 63p d by a distance of d/3, what are the new mutual forces?

  Two charged objects attra+ ,(xaqvp6wjwct each other with a force F. What happens to the force between them if one charge is doubled,qvxaw j ,w6p+( the other charge is 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 distancee,ey zb8/.gwqjrd8q zqxo33* of 1.0 m. What happens to the m z.qzwogjx/8brq e33dye8 ,* qagnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distan 8 1t3ygd+ef 6hbyfy(rce of 1.0 m. What happens to the magnitude of the force on the first electrgdhr1y6etyb3+y ( ff 8on if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What z*,m(v ox ij/c8qner2happens to the size of the force on the proton if the electroz8*xm(e,v i njoc/2qr n is moved 0.50 m closer to the proton?

  A point charge of +Q is placed rsx5.sit-p( +2qv m-telb,xz at 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 sz . x,v2stm- (i-l5tbs+qep xrquare'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 at the cent gzen.1je;vrpm642 ac roid 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 magnitude of the force that acts on the center charge due to a third charge of +Q placed at one of the other vertmej.26 gpn zra1cv;e4ices?

  Which of the following is not a vector1d)etv l0u) m*:wmt mm?

  At twice the distance from a point charge, the strebdbagry 8jbjc;+r:1:gu9:5+ rtzvz zngth of the electric field

  Is it possible to have a zero electric field value between ma)zbfe2agg9i x97u4 a negative and positive charge al2bza99x )4 7umgfeig aong the line joining the two charges?

  Is it possible to have a zero electric field value between two posit pcy crt 1(-wc vawo.y2.ui0o.a ;rel:ive charges along the line joining rw2(la0t.:o.cy .i orv-1;wce a ucy pthe two charges?

  Electric field lines near psitive pqgxb9c,u uqp 7.w,uw0 oint charges

  The electric field sqq1.q;a) g 9tt5onyw2cd p(bdhown

  Can electric field lines intersect in free space?41mn(v9 y/pxegke q ,u

  A solid block of metal in electrostatic equilibrium is p( tnd30*x fbu22rid gmlaced in a uniform electric field. Give a statemutind(32*02frxbd g m ent concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow ml s5pbo4d5+zs etal sphere of equal diameters are each given the same css+ 5p4l zbod5harge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum r5tuks *3ysad2zt-o 8rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be saiakr58t d2s-t zoy3us*d concerning the charge on the block's top surface?

  If a conductor is in electrostatrfavx8rtd :)6 ic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic spherc7txd*7 +vwglwi.gi (e that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the ho( g+x7cgwii7*v .d twlllow sphere has

State three properties of conductors in sfslb c o+)ov(h, 1ap,qtatic equilibrium.

State Gauss's law.

  The charge carried by v /+b ovm6md*o6qv(rrb/uu57 yxpnt)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 a4gq1beyhnk5 9*7 5+ dpd pfypn net charge of +2.00 mC. How many more protons than electrons does this piece of plast 1+f5yn h79bknppe pd*q 54gdyic have?

  What is the charge on 1 kg of projzgd90n sy 3+3q3by rotons?

  An atomic nucleus has a chgg7y g.zp,c68 oemj3narge 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 u: 3cpvz-cgl+and -4.0 mC, respectivelyucg-l 3+ c:vzp. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second chargeat5 xe lr,fq83, and the force between them is 1.0 N. What is the m5r8aleq 3,fx tagnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart arehk-atq avi2k*6 3 vq int04s wmski693 they?

  The force between a qe9:joj 3 of.1o rcw5d$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm a4e cq2r;uk8 af u4j q4taow)3gpart, experience a 1.0-N force. If they are move4u4e wg2 uq3q4fk8 aj;ca) tord to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC aior-j 5lv4.8af bh* epre placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 f r 8oi pv4-hlba*e.j5cm, 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 io5+aji 5f2cfobg ni dh)z2e :p*5/jcks 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 mago 25cpibah 5)idf:2cf*zk eg5oj +nj/nitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at tu)b6nd nj nsu+ .*ltu3he following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x nd.lun b)+u6t3 jun*s = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is plasqs1 3)w -axzgq8w /p -e4trpuced 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 third charge of -Q is placed at the lowe q8rsuxw1 tg)se-qp3p z/wa-4 r-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1 o3 zs/nw,e2ix jtgf+y:vg6i. .0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the ne,y xgi fj+6gi.v/e:so 2nztw3t force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);iduxwr- , pvrx7s-( e, Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is te sp-,wi,dx(-urvr 7xhe direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC atakbflg/ bl 8.k)8rz( re placed at the vertices of an equilateral triangle which measures 30 8 8gr(kba bl/ft lzk.)cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and)f 28xup hn 3vewxd8gej/(t7/o au8lf +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 fnw oe72f88v//(uj3uh f)adge ltx8pxorce 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. Where b.ef.w1 r xbx(gd/b0yon the x-axis can a third chargbx b1r.f e 0yw/(dbx.ge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed a-d bz6 onb 0i*zyh71kvt x = 2a. Where can a third positive charge +q be placed so that the force on it is zero7d*k nvzoz01-hbi 6by?

  A copper penny has a mass of 3.0 g.w6 1yk b 0/u 7e)lncuzj9-mncl: jk3xj 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 the attj8sxy.itp m9t-b s1/graction of a fixed proton some distance above it. How far abosgtj9txbp.- 8 myis /1ve the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by non9fi0 jh6 x0ut l)chln(conducting threads which are 30 cm long. Both are given identical charges, and the electrostatic u hfl6 (0h0xnc)ijtl 9repulsion 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.7ib2tf.ko fi: What is the magnitude of the electric field at a distance of 1.0 m from the nucleuski 7:f if.o2tb?

  What are the magnitude and directi:s4 e1w z6bhhn,v+m kgon of the electric field at a distance of 1.50 m from a 50.0-nC chn:h 6 wg4m1vbzh,esk+ arge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the -b2v-y-c qyfmpi;uk5electric field at ; fqy5i-mvu bp-yk2c- the location of the test charge?

  A 5.0-C charge is 10 m from a small test q+oiwnla d8/ 0charge. What is the direction of the eln 0id/wl8q+ aoectric field?

  A 5.0-C charge is 10 m from cwc) alvhlsjvj il.+;)( a u5cv3 x1hr+z/:xya small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placha+3l xjh1+rcv(;xl:viac jysl czw5.) u)/ved at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separh. bccqqwsh9eee)6 32 ated by a distance of 4.0 m. What is the electric e6qw c)q .e2e9h 3cbhsfield 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 :+m luvf4o kpllwckej/;4g k7 lc:h:x k84oo; a -4.0 mC charge is placed at the 50 cm mark. W e+8ukw:l ;jl 4lpo:k7k vkhofl/cocg4: 4xm;hat is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter0afnv 4 q48xpfcx/-fq stick and a -4.0 mC charge is placed at the 50q-n0 f/f aq84v xcpxf4 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 ajg*b(d 1v*avc-0 bqfolc c uw9(yt*l *wg su36t x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betwebyvj9b1fc3cu*(* wt l aqw ggdo(l c-0sv**6uen them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 ky fygl.-bne gl,/()d m. The last corner is occupied by a -3.0 mC charge. Find the electric ./nlfykby-g,l d)g (e field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are pyno-4l7,o5 f9ztw zc tlaced 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 magnitude c n zow9f475-,zt otlyof the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it ispqm*/rg 5m 5urf2pbn o ,y.waiv3 .qx0 placed in a uniform electric field.u gr5m2no.3ppwmq 0f*,. 5vr /ibax qy What is the magnitude of this electric field?

  A particle with a charge of 4.0 :rbh--j/ ka8p/wz nhg 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 an eyqb xx2 qs1;3nlectric field of 6000 N/C pointing downward. What chargns 2qx3bx1 qy;e must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is plg 4n7s-,zp gq ufv:jd5aced inside a uniform electric field, and is suspended against the forcdfg5sgj4:v u 7z-q ,npe of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charg;w+)l4j; pprwnl3j br9env1x e of +2.0 mC. What is the magnitude of the electric1l)nj jl v;x+pbr;r93w pnwe 4 field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm v*d -m3b/pl5ylsd: po/iw)e z carries a charge of 3.0 mC. What is the electrip/ :l*bymd3iezw5v l-dp / os)c field 6.0 cm from the center of the sphere?