State the law of conservation of electric ch:cxec d3 0,bdki s;9* zsufyt2arge.

  Is it possible for twq 8 inyl ga)a;s;oll,4o negative charges to attract each other?

  Is it possible for a positive and a negative charge to attr e)yjq6fjm:0w act each other?

  A glass rod is rubbed with a piece of (ik.pikn,7hopx 1(zh du7 o3y silk. During the process the glass rod acquires a posit 73(, 1i.ozdpk yh7kpoux h(niive charge and the silk

  A proton carries a

  The model of the atom sk:) .4yeentp yhows a

  A neutral atom always hasd tc+e8 je53- afei8cy

  An atom has more electrons than protons. pg* yl 8mi:m4a The atom is

  Materials in which the electrons are b:qk,5ycfty*q *eaw,v h /4rr gk pn99xound very tightly to the nuclei are referred to as yn kq5**9 e9tq:/cwx4ph vkgra,yr ,f

  Materials in which the electronsq1cd/l4(1rehw8 - tkg oacv/ b are bound very loosely to the nuclei and can move about fr/r-haed 41c/ 8l gq1 b(vkcotweely within the material are referred to as

  A negatively charged rod is brought near one tt4 p;8w,jd*nlm( k9rpwgym/ end of an uncharged metal bar. The end of the metal bar fart84wp ;/pg9trjkyn (l mwdt*m, hest from the charged rod will be charged

  Sphere A carries a net positive charge, and spm)j 0p/wr h6nwi.re -t:8zhsmhere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with wsrh nzrpw -e m./htj8:i0)6ma wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an ixtrp 5ot 4 q-36 .qsbhto8yu;electroscope positively?

  An originally neutral electroscope is briefly touched with a positivelfl iux+g, -h zed60zz-+ n;qkly charged gfdnkl+ h+- elg;0q,x u-izzz 6lass rod. The electroscope

  An originally neutral electroscope is grounded briefk+.vyw( r 82ze5 ir5fhc3oi qxly while a positively charged glass rod is held near it. After the glass rod is 5xiy io(wr2+ehf.q5 k3 rzv 8cremoved, the electroscope

  A positive object touches a u7 ( krgxdb)lncm;6/ vneutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it.g(rk n/m vl6u) x7dc;b What happens to the leaves?

  A large negatively charged object is placed on an in r 2:mbgaip.sf *w,ib)sulated table. 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 the first ball, strikes the first ball, and stops. The first ball rolls forf:bag,wi*2si mb .r p)ward, 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 constanimo99ea-y a.ki li7: bt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dyiyp8k3itt1h4 fgt : 4istance d. The first charge is larger in magnitude than the second chyi18f ght:pyt3ti 4k4arge.

  Sphere A carries a net charge and sphere B is neutral. They are placeb2,)n- z w+rd wbub+aad near each other on an insulated table. Which statement best describz +bund+w2) ,bar-bwa es the electrostatic force between them?

  Two charged objects attraox cz5. l5,b wsd4jq-lun5m m)ct each other with a certain force. If the charges on both objects are doubled with no change in separation, the force between th,55uzm 4c bsx mw5.jn-oll) dqem

  Two charges are separated by a distance d and exert mutual attract4t3tbso mn*v 5ive forces of F on each oth ms5tonv*34tb er. 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 forcexktw. de 6;:kcsbqjl.vd9o73 F. What happens to the force between them if one charge is doubled, 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 k6.ovje l3 s.t;:dwqk9xc7db to

  An electron and a proton are separated by a distance of 1.0 m. What happens gpalj8c702.i2xo zotj, o9ws to the magnitude of the forztoa9jo 70p2.s8lowg2i jc ,x ce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a dis i(7yx 1)pkgv ui-,ahftance of 1.0 m. What happens to the magnit y,x u7h1)fki(pv- giaude of the force on the first electron 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 happeusiy b/29t)hrns to the size of the force on the proton if the electron is moved 0.50 m9yb)2rs /ihu t closer to the proton?

  A point charge of +Q is placed at the center of a square. ubm g7*nidl; gwt:f 1 *,l8 0tt:gpebyWhen 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 pos*bt7tgedwb80*pi:fl1m ult : , n g;ygitive 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 plac: g:wzi rag7igcw7 /twe f:(.jed at 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 magnitude of the force that acts on the center charge due to a third charge of +Q :wwwf /rgzc7:7g(iit j. g:ea placed at one of the other vertices?

  Which of the following is not a rvd oz: bc *v:l r*i(8sqvx0;qvector?

  At twice the distance from a point charge, the strengx -ea pe3t 0tlqynf-p+w39sxou7:*n jth of the electric field

  Is it possible to have a zero electric field valraf4*6eqkb 7nue between a negative and positive charge along the line join4ab *kef7 n6rqing the two charges?

  Is it possible to have a zero electric field value between two 4 34cpa,rfb.+:h h) emvfx bbgpositive charges along the line joining the two charg4v bm3 g.efcpr)bba4+ :hfxh ,es?

  Electric field lines near psitive point7ir;i c/ af bg9v;ebz7y-k n:p charges

  The electric field shooqd*hbjz:2p; wn

  Can electric field l c rqvhmn:i 9b/06cz4sines intersect in free space?

  A solid block of metal in electrostatic exs1 ,us f))13z78meazpf qw tjquilibrium is placed in a uniform electricj ,a 3mq7s)f xtf1w ez8s1pzu) field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each qvb*z ginw3(g5ye;d7 xf1 3mkgiven the same charge, the electric fiel; 3me (5i*qvkxnfb31 w7gdgy zd (E) midway between the center and the surface is

  A cubic block of aluminum rests 1uskl88l. fbp.cv-l pon a wooden table in a region where a uniform electp.fpl- .8u1lcl vkb8sric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near a fj p0t5vhb+whoy.zz c634im 8n electric charge

  A positive point charged)v50e(cujpz ibf l my)5ph,; is enclosed in a hollow metallic sphere that is grounded. As compare ; zdmf5)jl( eyhcp)05bp iuv,d to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertie/ zojyf z+ d)joy,;(tes of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron i , z)wl7hhu0oz2c )qd)d+rmxps $e = -1.6 \times 10^{-19} \; C$. 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 mow 3jcd;h i9 t ;e(im.dabaj:2wt.ico 7l) )xqqre protons than electrons does this piece of plastic .;i3dm wd jqwthj)x.) 9i c;otla(7e 2a: ibqchave?

  What is the charge on 1 kg of proton).ia +dr yty0*bt2ojea (m)3ekvdf8 xs?

  An atomic nucleus has a charge oak*gscy6 z7bx; j,9cq f $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.rapod; )b/or8 5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force b/d)ra o8p r;obetween them?

  A 1.0-C charge is 15 m from a second charge, and thefn0a owt:47lg force between them is 1.0 N. Wg4 7al 0otnfw:hat is the magnitude of the second charge?

  Two 1.0-C charges have a force*mip4r92vnf yp /cq.vci48hp3k c f0 q between them of 1.0 N. How far apart are they?

  The force between a m0 lxdd4 +p.hj, jrvq2$30 \; mC$ 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. Ib6scp6 7ran5 s:adb;wf they are moved to a new separation of 8.r asb6675 dnw;b cpsa:0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placedny*67k0-blyaow lw)b 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 of the electrostatic force whi7*bow6)al k0-wb n lyych acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of ocyar-f) ) )c 4dngr;r+2.0 mC is placed at the origin, -2.0 -;drnrcor f))) cgy4a 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 origin?

  Three point charges are located at oz* nqiox)xp vjp14tx 7t, .4lthe 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 tho*4.vp ,7ltin xtj ) pxo1x4qze magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point cbic9-6 jp zp3sharge 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 -Qz jib3s-9 pp6c 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 nC ieb qx1nr:qc 01s at (0, 0). What is the magnitude of the net force oneqn1r0xqc 1 b: 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 = g d p-u,cry/(mjdx8z -5.0 nC is at (0, 0). What mdguj(d y-8/-pzxr ,c is the direction of the net force on the 5.0 nC charge?

  Three identical charges ofri:) dsb8 xz 4q2v/moi, 3fux+u sv.djfib9 4u 3.0 mC are placed at the vertices of an equilateral triangle whu s4,24md:d38v/ i)jif. qrx o9 ifu su+vxbbzich measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point chargez8gwajwr3ex mke3*37ecg6gppv0 o . 4s of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two chargew 3gjxz6*agrep037 .cm4eve 3gkp wo8s, would it be 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. 0uiq fgm2c5(ggb f.:3lj 5mfeWhere on the x-axis can a thirglfiu3f50gbmf eg jc :.2mq5(d charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and cht.f u 4d/ow+jme+b+dsarge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zerw +dm u.+f o/4bdt+jeso?

  A copper penny has a massi(qfrz: 4) skl of 3.0 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 unc e 5e0dibj1f76 (*g u4jdczup against the force of gravity by the attraction of a fixed proton some distance above it. How far above the elect jefc*idg1nz70eb( 4 ucj6u5dron is the proton?

  Two 0.20-g metal spheres are hung from a cse ;* re g/aa5xbkvj44ommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the k5j g sar4axe*ve;b4/ threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of the electric fbv :q7j56v;lqlwv/ooield at a distan6/5qblw ov:vjovql7 ;ce of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.55hkug.mb828/(ikjv g grmjxnk5 ) /ie0 m from a 50.0-nC (ih8 bmm k v)/kgj.2ngri 85xjg/e5ku charge?

  A 5.0-C charge is 10 m from a s+(o1+5xwtxq*xn 9clzx/p g(sv z8eio mall test charge. What is the magnitude of the electric field at the lcpze+x(9i+/x8( x q ogotvxz1wn* s5location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the diredd9gy.hho px6l3u/3d6do5 qe ction of the electric fiel6hhpx/d 3oqldueg o6d5 y.d 93d?

  A 5.0-C charge is 10 m from a small test charvvwrykc.jl( k t0 r,(;segi7a-g8x -tge. What is the magnitude of the force experien vgcg tr7- vj0lr-x.yas,; i((8k wektced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distan9c6p;m ab 0 jls01nroece of 4.0 m. What is the electric field at a point midway blo p01r06mb 9jse;nca etween the two charges?

  A 5.0-mC charge is plal36w a k.i,qu:kuyih2m)7 k yeced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mari. kw2uuy7i he6,:q)lykak3mk. 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 sjctk 2qn jml bx )t2;-o jatu/0t69tm:tick and a -4.0 mC charge is pl0ttlkqcjnxab ):t/j2 j;u t2m-69 otmaced at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of + k0)l lo+ao1gh3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is l)h0 g+l1a ookthe 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 side 0.50 mf0i,zy ;g w 9knlhae2/ip) *ef. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the g/ 0i n9hpwz2 ai;eey k),*flfsquare.

  Consider a square which is 1.u3 fox+ wl-+ 9xyxei6c0 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 mCx x-iyo6x++c le39wfu 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 ougzjyjc :t5 x:g66lcb:w * es:f 5.0 mC when it is placed in a uniform electric field. c:ju5g:6et gbc y*:s:x6zjlw What is the magnitude of this electric field?

  A particle with a charge of 4.0 mnd )q nw3,a-p,hb3 qvfC 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 electric field of 6000 Nxx1y*3al4tph2u lddt. a: jz4/C pointing downward. What charge must be placed on the ball for 24ltxa y.:hu*l t34 zxd1adpj it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is place6okd:o ifpf72 ;7pm ind inside a uniform electric field, and is suspended against the force of gravity. What a id6miko npp o;f:277fre the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 8hwp9tqhzj 2(r;fz4d mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfa h8( 92fwjqpzrhd4; tzce?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What 0u/4t9d w fd5f hchcd04 n;ejgis the electric field 6.0 0duf;egfwt40nh4dj9 c /dch5cm from the center of the sphere?