State the law of conu o8mqw-vxvlfy47ti1.z ;gv+servation of electric charge.

  Is it possible for two negative charges to a+ y;)gb *dyyanjq tsh7yb29u +mx)gm(ttract each other?

  Is it possible for a positive and a negative charg9hq3dx85b wkaj2;7 p ozeol b6e to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the gl d(,0i ruvq7amel:,z xass rod acquires,xr 0eqliz7,av :(mdu a positive charge and the silk

  A proton carries a

  The model of the atom showsfb i,la;tsn8 , a

  A neutral atom always hka;y/i8 0cdqd cbd1d /3nvhg :as

  An atom has more electrons than protons. The a:jl adho ei2 ba1-0g+ptom is

  Materials in which the electrons are bound very tightly to the n s ku(x,)il*4nssx6p60v2if.pw j thwuclei are referrexsi. h(*p6f ,j40wws kuvxnp l)ts6i2d to as

  Materials in which the electrons are z 3.9.eta6ot2f qcq bnrn( z.nbound very loosely to the nuclei and can move about freely within the material are refe c6bof3q9an.t r.nqn2 (t.zze rred to as

  A negatively charged rod is brought near one endq3c,nk7zq 0go4 we,k t of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be charqwek,q7otg34kz 0 nc,ged

  Sphere A carries a net positive charge, and sphere B is neu 3 zlh+s;zvnu ctw:k+uua2f3 :tral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is g+wu:u z;ushnv3: f+ k3cz t2larounded. Which statement is correct?

  How can a negatively charg+q:i6mnpbxp : 0s e8d5.res kyed rod charge an electroscope positively?

  An originally neutral ero8rm/ 7)ooacp2qgyn a7 qg); .g;kollectroscope is briefly touched with a positively charged glass rod. Th7n c y.oq gga ;ro;kol)mraq8o/7 p)2ge electroscope

  An originally neutral electroscope ieclhg3(ghuua/ : 8w7 ms grounded briefly while a positively charged glass rod is held near it. Afhg7g83e uch: (a/l uwmter the glass rod is removed, the electroscope

  A positive object touwc3,skeii 1( rches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happkwi c1rsie3,( ens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral y6rz -9fl1w 6jsf of: 08uxj+ pq2wqmrmetallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path followed by the rw lq8ro-6 y 0qf jf6:x2wms91jfp+uz 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 const*:wbzvxb5nhspz zrio0 7;gw ,36 s4g fant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firs9 (r,ua.1 a:u fpyxdrst charge is larger in magnitude than the , 9pxuaf1r :y(rs.dau second charge.

  Sphere A carries a net charge and sphere B is neutral. They are plac2wosv f90spts * 60xhged near each other on an insuvgswfh 20s0p*9soxt 6lated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If tgu9/7 hm h8nukhe charges on both objects are doubled with no change in separation, the force betwh7k98nuhmg / ueen them

  Two charges are separated by a distance d and eniv q)kn */- v1pqyj2pxert mutual attractive forces of F on e2i/q yqpknp-n*vj1 v)ach other. 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 forcea//h7 cnfx/xn.aa amc0ls4h, F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distan/c/ a7x40x malanan fh c/h,.sce 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 happens. cozqcoyfyy4 b rm-o 029h26s to the magnitude of the force on the proton if a second electron is placed next to the first electronhozms bc2oy4r9c oyq206fy .-?

  An electron and a proton are separated by a distance of 1.0 m. Whatr:l2ie s+k/ :b .ixemer6da;o happens to the magnitude of the force on the first electron if a secr.ie r ox:2;bk lea6i:e+ msd/ond electron is placed next to the proton?

  An electron and a proton ar kzk--r9ikyn :e separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron :rkki-y9 n-zkis moved 0.50 m closer to the proton?

  A point charge of +Q is pla 6 o;knbi05txeced 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 square's center. Now, identical charges of -Q are placed at the other three corner i0one x5b;tk6s 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 thee / 5xyhrfh/2p centroid of an equilateral triangle. When a second charge of +Q is placed at one of the trianhxhf/rp/ ye2 5gle'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 following i6.rpg4z.j.dg5 88xph(8kbykfijc u)qfh i e 7s not a vector?

  At twice the distancyo cdan84eh1fn q:) f-e from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a nega4e:f- iiv :f/7u wrehytive and positi7h4-w r/ ::vfeyuiie fve charge along the line joining the two charges?

  Is it possible to have a zero electric field value betweos(ztvv ra0) -en two positive charges along the line r )vta-v( oz0sjoining the two charges?

  Electric field lines near psitive pointif vt3m2oo/b7 charges

  The electric field shr . y,4 e/y8ej72t uq*egmbuibown

  Can electric field lines intersect in frxem2cav5v e5axvq r:2. (/if lee space?

  A solid block of metal in electrostatic equilibrium is placed in a mmo6p rr b3o)wm s0n82ya k2coj.5qo+ uniform electric field. Give a statement concerning the electric field in the block's inteojnm r3 p q8 o2s5koyamc06+w). rbo2mrior.

  If a solid metal sphere and a hollow metal sphere of equal diaf3/3 7 q(l0c zexw 1t 3wbfkdk1h1rdhsmeters are each given the same charges z3 1k3k0t1dhef 1rdl3wx7c( wfqbh/, 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 unifofze2b, rh07-/jm-t t7c kbvf jrm electric fi ,h/j07btrf z j7e-mkbft2vc -eld is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium neaipf9.c wefe h//o2h6or an electric charge

  A positive point charge is enclosef w: gt4cx2w q-7qs+o :z5qdmgd in a hollow metallic sphere that is grounded. As compared to the case without thextqc2o5: 4wg fq7dzgs +wq- m: hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of-7h-kfd9 g- iqf5aw rf conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is 0a1tt anjko*8ym5pks10 ;4fytytz (wv* 9mcc$e = -1.6 \times 10^{-19} \; C$. 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 manyw/ ;u73ouzwb5ds jck- more protons than electrons does thisj3 b5w7cku-/wu; zosd piece of plastic have?

  What is the charge on 1 kgl .y,r 9bi.n jawzv7sx;8 ejdeue,w /5 of protons?

  An atomic nucleus has a charge cx;* 7wyx 0s-)lomaqx9 spcv;of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by *bopm36z wfy 71.5 cm, have charge values of 2.0 and -4.0 mC, respective fzo6 7*ybmpw3ly. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 N ck2:d emcdsp.5efj /9. pmds:e.cjc2/ed59fk What is the magnitude of the second charge?

  Two 1.0-C charges have a force betwezn,t* ffcw7 xe(d5;+ttlm7:ug :gzij en them of 1.0 N. How far apart are they?

  The force between a t 9 h6.rkixlcyd6,(xz$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experien+euw9tj0ow dm-+c o ahtoq76,ce a 1.0-N force. If they are moved to a new separation of 8.0 cmu t90 6comehw7-+dwqa ,o+jto, what is the electric force between them?

  Three identical point chargesbei ysz4y8 8iu /og3ao.ccy/: 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 tyc ysg3 o8bzi/u8:/o.e yi4a che 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+ai 39jhka gl.2 rs/jb 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 electrostatic force which act aisgkjb329 jh+./lar s on the charge at the origin?

  Three point charges are locaxn 0:xd1* iidz3l *a8rv :hbzmted 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 forcev0 d3 xn* 8l1rz*dzm:aih bi:x on the 3.00-mC charge?

  A point charge of +Q islpp 8 o7npoz;40kqrc( placed at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed thatpk 8l;(q0pr4op7c n zo 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); Qs*vw o;7xzzm 29xya53gckf8 y3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC85ycgmx*z x7zo9w 2 k;ys vaf3 charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.1+yhw wn)gs 5tb-x w*2x0 m); Q3 = 5.0 nC is at (0, wtnx +bxw- )2ysg5wh* 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatera 7st t8rqgq- j99pr,9nc;etb wl triangle which measures 30 cm on a side. What is the magnitude of the electrostatic fown j9qr7;ebrp t,c 9gqs98-t trce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 sa;geq1htj 6 2ep, )-yy figg,m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the e6fejq, y- t g)g2a; pehis1,yglectrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is atfwa2/xe f2)t c x = 4.0 m. Where on the x-axis can a third charge be placed so the net force wfc) te xfa22/on it is zero?

  Charge +2q is placed g8 vvn-je0rgxt2 3/ oyat the origin and charge -q is placed at x = 2a. Where can a third positive og8nv/t0xjye rvg -23 charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. ek 8w.6xn 11jvcurkaq c z13.z 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 pr m zi 66jwu-.3b ma9cv63dbynf;z;w the force of gravity by the attraction of a fixed proton some distan ym6z9 wv buc- b3;.;jr6dna3mzf6i pwce above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common pol jvyx k;-8l8oint 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 threal8j8v; y-xol kds 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 elece4+njh -9dnrr76xi t wtric field at a distance of 1.0 m from tedj6it+r4 rn9xh 7n-w he nucleus?

  What are the magnitude and direction of the electric fiel- thn- kw+p+uld at a distance of 1.50 m from a wtpn - k-+l+hu50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. o;.8 lom-,i-pyjaafc What is the magnitude of the electric field at the location of ;fjlo- m cai-8a .,opythe test charge?

  A 5.0-C charge is 10 m from a small test charge4wjf ktya126 gz4vxusw o76)i5, kvle. What is the direction of the electric field7ut val, f1v64 yxo2 6eiw5kjzsw4k g)?

  A 5.0-C charge is 10 m from a small test charge. What is the n8;0wpma5 t s1kqwx8b magnitude of the force experienced by a 1.0 nCnk1 w;sa 5m8q8 xpb0tw charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 Ce9qn*9 )e wc) ,gtxold and are separated by a distance of 4.0 m. What )w)lnt9dg ,x9 eo *cqeis the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at et 0fjfe7(yb,the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm(jey f0 bf7e,t mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark oq0x*a txbsabi a 961o9f a meter stick and a -4.0 mC charge is placed at the 50 cm mark. t*i9x1a0bo sba9q x6a 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 epa ;/ybh-ud.at x = 0 and x = 0.20 m. What is the magnitude of the electric fiep - hdb.uya/;eld at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. w+a*/uooh 1mi,k mc d0/ p5/up oj4ejh The last corner is occupied by a -3.0 mC char pje1u/0j d5/mooc/aw hi, kuoh4+m* pge. Find the electric field at the center of the square.

  Consider a square whichc pr9.uh:,)d-lo ohda is 1.0 m on a side. Charges are placed at the corners of the square as followsd)ph r.l dho:a-9ouc,: +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 of the electric field at the square's center?

  A force of 10 N acts on onlj78gb1dgfzduh1tu. o +08a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnit.u ft17o1dd z8 8goj+nu0lb hgude of this electric field?

  A particle with a charge of 4.0 mC has a madyf u.wz5r fw8cvlr*r63;d 7 rss 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 pla9-r:k lh m7azqced in an electric field of 6000 N/C pointing dow mq-7zh al:kr9nward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a c4kuy7gsqd :-u-uv3 o 7 j(ncqvnq50 jgharge 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 of the electric0(vcqu snk7j :g73 n5qu-jgyqv4od-u field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Whn6tjoi o+p -tz; 57uqdat is the magnitude of the electric field 5.0 cm from t tpo7 5otz+nuq;j-d6i he sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is/o 2:6 6.wmd8cna zsmf d1 x/;kwakoun the electricdaokdosu6 am: n1 x2;mkw/6zfcn/.w8 field 6.0 cm from the center of the sphere?