State the law of conserva7lezk 8 ,jkl0 w0)29x7 9kkqmyfmxxention of electric charge.

  Is it possible for two negative charges to attract eac8xd;u6fn y iupym n8-e: pg,f3h other?

  Is it possible for a positive and a negative charg4e*0. d(cnaj jl gwa9 npn9:vle to attract each other?

  A glass rod is rubbed gck* q jt9ce3faow7h)d*/m, xwith a piece of silk. During the process the glass rod acquires a posit)aj,g of9*hd 7/w*mx 3cktqceive charge and the silk

  A proton carries a

  The model of the atom show u0n7no pi dm*7:;penes a

  A neutral atom always hi(yy a i nsis s+z*c71c/+pgv2as

  An atom has more electrons than pro8j. );e gn8l3nb cvbqztons. The atom is

  Materials in which the electrons are bound very tightl*2 l1etjcmevf6q13 .g lrl8yey to the nuclei are referred to aeqjeyl2 r*mct 3ef 1g.1 vll86s

  Materials in which the electrons are bound very loosely tuw;sd e+0e7yxwv/q: io the nuclei and can move about freely within the material are referreys;0 qwe 7d:iu+ /vwxed to as

  A negatively charged rod is brought near one end o msajv+ 3qip+a1vm68mf an uncharged metal bar. The end of the metal bar farthest from+vq6 1 ipa8mas +mvm3j the charged rod will be charged

  Sphere A carries a net positivex*2/ft dzm5pnoe-l9w charge, and sphere B is neutral. They are placed near each other on an 9-o2 zndw/eplf t*5mxinsulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod cha.6q joyhxddi(la/()qk)uaht: re : y0rge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivelpax zepi*-)mn k t;:d(y charged dp ixt-* ae( );:zpnkmglass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively char-.b/ sqz4 pangf 5 vhy)m8mpd6ged glass rod is held near itqb.6hp) ndp5mvy -/ ma g8szf4. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the 9l klb8 dp -0kufl1p(0i:iwpe leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What 0l0pi el(bp-p dfwku:8lk9i 1happens to the leaves?

  A large negatively charged pmc 5xxwqmv.08 *7*epda-b9e 1glgzi object is placed on an insulated table. A neutral metallic ball rolls straight toward the obb exme gp**0-5miw.dz gq 97l1acp8xv ject, 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 is the final charge on each ball?

  Charge is

  What are the units of the Coulo)t gf hr(,n q,qis81gemb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is la+hp6 lrg tn08sxg.q-c rger in magnitude than the seconrl6h qgtp-0n gx+.s 8cd charge.

  Sphere A carries a net charge and sphere Bpu(*yy e. i3c; aux3vr is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force betweux.u c( yyp ve3a3r;*ien them?

  Two charged objects attraiiut5 c/1spd2 ct each other with a certain force. If the charges on both objects are doubled with no1/cdsui2ti5 p change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractivsbxs5falyp g q )77ct .du12i4e forces of F on each b7 pcd7 gyi2ts.lx )s14uaf5qother. 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 for4:jta39 y0ixp tpaw- uce F. What happens to the force between them if one charge is doubled, the other charge is t4pwjux t9t3 aia-:py 0ripled, 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 sea2t3v s4; xwzlparated by a distance of 1.0 m. What happens to the magnitude of the forz;xlw2vas3 t4ce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are s3 9fzi.juy necp1t* 7feparated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a.1 fpu*f97ty 3ijencz second electron is placed next to the proton?

  An electron and a proton are separated by a d300-m ktcaghnls4d,bistance of 1.0 m. What happens to the size of the force on the proton if the electron is ,0 cdbl3 kah m4ts0-gnmoved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a sec pyvh5w*j +nnfs6 d-u4ond 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 corners of the square. What*sd64 ny p5 +fv-wjuhn 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. lbnvd02+ky(6ai)n 5air;hbtw ( ;r ct 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 chargenl 2rb+n) (5 vbcwkia;i t 6h(;t0dyar due to a third charge of +Q placed at one of the other vertices?

  Which of the following iso71mloral0fm3 lln 08 not a vector?

  At twice the distance from ryewa+k: ze*,a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and pos ffs0z 3ufnce75s8j;ditive cha;efn5cfu3 f78dssj 0zrge along the line joining the two charges?

  Is it possible to have a zero electric field value between ti 4y(noep y3( d6j8dckwo positive charges al 4p d(njydkyiec( o386ong the line joining the two charges?

  Electric field lines near psitiv y2,q6dlf /)v,e1r ibdxok/y le point charges

  The electric field sho hwa()p+k ql,w6 ez) 5-vrqeoiwn

  Can electric field lines intersect in free s-nh/w jgra 97hpace?

  A solid block of metal in electrostatic equilibrium is placed in a uniformvk-q(i 0h .v,pbwid(v electric field. Give a statement concerning the electric field in hpw(ii -bkdq (0vvv .,the block's interior.

  If a solid metal sphere and a hollow mtgdx-5k ybj52j+/b9i uf wyw4 etal sphere of equal diameters are each given the same ch+5 2x- k5ydwtg/ ywi9ub4bjj farge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on ar wqhucg3 8ux-2aq05wc ;xzv; wooden table in a region where a uniform electric field is directed straight upward. W 5 wz gc;q02arcv3 wqxxu-8hu;hat can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an+kwdz8a8,b .l/ dqrs v electric charge

  A positive point charge is enclose. afw jd4yx6+r8p zai:d in a hollow metallic sphere that is grounded. As compared to the case without the hollow sp8 ji6z:yr4axfd.p+a where, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stat+ vr xe*q 2-j0 p/oqnke0j3w-bx5ukp sic equilibrium.

State Gauss's law.

  The charge carried by po6xwbyeav3 j; 9)6e+lgh+lione 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 charge of +2.8 fy )4p-spe; 4qk7 jrobzwrq)00 mC. How many more protons than electrons does this piece of plas pr-krwy7oe j 4bs 8)4qqp);fztic have?

  What is the charge on 1 kg of pu1m97pq 0+gxbj u8 qhdrotons?

  An atomic nucleus has a charge/ d20gub x;ltx 6: av.w9qsorcmcc ;f, 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 and -n(r, 6eaut8h f uso*,w4.0 mC, respetu ,noh,8* fa6wesu (rctively. 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 xm:f24z- ohm erjm/0 ota,q ;mis 1.0 N. What is the magnitude of the second chaf4q/,m :0rm- 2;a hzmtex moojrge?

  Two 1.0-C charges have 2fz91:xcll q kl h5qc: p*q*qf :faf7ea force between them of 1.0 N. How far apart are they?

  The force between a iv 4;:-awm;zhr v:prz$30 \; mC$ 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 f,eq(tfbee1olz+ 2 w,p orce. If they are moved to a new separation of 8.0 cm, what is the electric force between oe+wlt e , bp1zf2(qe,them?

  Three identical point charges of 2.0 kcu:(k4b j3 dvmC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and 3 bv(:ujd4kkcthe 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 a5ma+i+ h;j/ vi+wymfe tk86j nre placed on the 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 electrostatic force which k6+ /vj++ 8jhawfm5it;n i emyacts on the charge at the origin?

  Three point charges are l4a7aw kd590xnn7l ln gocated 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 force on the 3.00-mC cha75790lw4 ldn xkgnnaa rge?

  A point charge of +Q is placed at the center cmqjtx4ge 8 -es; o2hhx68s f(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 charg2o(ce; s8x6 h-ft8mx js qehg4e 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 qli*7qdx h2 kxk*j (9cg6qv j5= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). hgx7 qq9*c2*(k il k6jjdvqx5What is the magnitude of the net force on 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 = 5.*6yf unak;gu:) m :b uu+hfa3c0 nC is at (0, 0). What is the direction o:u f:bhyk +m*ugaa; f6cunu3) f the net force on the 5.0 nC charge?

  Three identical charges of7u p:4o(ba9p4azvx z- x5zzjim/c :eh 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on ae4 9ux7obp: a p/vzzai4(xm5:czjh-z side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At e3b)kl /+/fk-n mcuf ewhat point, on a e3+)emkf /blnk /-fcu 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 zero?

  A +3.0-C charge is at the origin and a +9.0-141 vkodhxhx e/0;ecc C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed soechek0 x1/do4 v1 hx;c the net force on it is zero?

  Charge +2q is placed at l:x 4 y3xsmx7jthe origin and charge -q is placed at x = 2a. Where can a third positive charge +q be pjls47xxm3: xy laced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tota3 ar9w5bqtipdo6 ))xpl 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 theymw u,5zs(t6 c force of gravity by the attraction of a fixed prozu,65s wmt( cyton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by*xe vn3tyw8) w nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart unt38)yx e vw*tnwil 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 magnitude vvyl /n/,stc + segrgc1*s72u of the electric field at a distgl1uvg y7+/e cn/rt,vscs2*s ance of 1.0 m from the nucleus?

  What are the magnitud q;f l 5d(f+ohvdi9qek6gc.) ve and direction of the electric field at a distance of 1.50 m from a 50.0-nC charg (d6qvgi efl;9d+.5k)q ofc hve?

  A 5.0-C charge is 10 m from a small test charge. What is the mhtn, gdg8a-d e:3pfb3yv;e3 yagnitude of the electric field at the location dg3 gdv;,h y ebatn-3p3:y fe8of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directiond9al qc,.+ieknuw;h . of the electric fiel..e u+w, id nl9kcaqh;d?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudjt)qo qdbk mgb3n,;pa-)p93l y (jh5me of the force experienced by a 1.0 nC ch -pl(,o3)mjt9)q bbj ;g5a ynkdpq mh3arge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distanc .vlpwkn/11ejciysm 7t 0 -e2de of 4.0 m. What is the electr2y-pvi wdktens1l e710c.j/m ic 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 chargm(ngci7) jg(-e5 z +we pk+bffe is placed at the 50 cm mark. What is the 7fe)+jmcz(fnk+i(pbge wg 5 - electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm m22d. a - ke dyu cxqujm/wmbkm1)mgpv)3k 3.l)ark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining3.3ubpmxavk). 22)gmmyemk qk-l/dd 1 wucj) the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC wu0/prl*/sc tb/oxa+are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field*r uxlsaw+c/o p0//t b at the point midway between them?

  Three 3.0 mC charges are at the three corne ld/6q1hxu9cy.wz8b a: lu-ldrs of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Findadxhul6 :cyl/q.89zd l1-uw b the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. twcae0h9v/x 8Charges are placed 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 magnitudete08wca v/9 xh of the electric field at the square's center?

  A force of 10 N acts on 7,sg1 p/5 tuara(ctxy)dtuu-a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electc, ut -ut(axpyrt5sa7d1) ug/ric field?

  A particle with a charilx /no y d-j+pmm 8c417c3eikge of 4.0 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 q4h(q bhfv8uy( /f+t telectric field of 6000 N/C pointing downward. What charge must be placed on the ball for it q+fq t8( tvh( 4bhf/uyto be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed +;bhk9wh .a qtinside a uniform electric field, and is suspended against the force of gravity. +9hb;k whatq. What are the magnitude and direction of the electric field?

  A metal sphere of radius d9cj7r3vzu w(dm5.p nr 8nlz- 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric fiecr(73z9 p-r .nl jdw dv5n8uzmld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wh0 *uc5dy0 qglsat is the electric fie d*s050yl cgquld 6.0 cm from the center of the sphere?