State the law of conservation of electric4 up6zkjf)-hw4es( 0 cz l:tcm charge.

  Is it possible for two neg.e0kwmkmvk tp 0h-/uuw mb1;6 ative charges to attract each other?

  Is it possible for a positiveoi1fom7u:k vp p: jy6/p7za4u5omc 8 p and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glassmp/iv swh26l8 rod acquirl2 smw6phi/v8 es a positive charge and the silk

  A proton carries a

  The model of the atom shows :bh1ng.:3z; ofi zsbd a

  A neutral atom always ha/;9 miw9yw q/ dh; +sjlyndhb0s

  An atom has more electrons than pq1 nr*swjb6: vjy .rw5rotons. The atom is

  Materials in which the electrons are bound very tightly to the nuc1, ggjn3xtxa-70r nb9ttijz (lei are referred (tt 0jr13nig7,xb9-azg xnj tto as

  Materials in which the electrons ary q8+zdsghq 6pk,/ t b-t9y1vne bound very loosely to the nuclei and can move about freely w9zbh y6, kd-vt 8yts+q /qngp1ithin the material are referred to as

  A negatively charged roiy3/b5szi qv0d is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be csy izv50b3i/q harged

  Sphere A carries a ncq1e (plyl (3jsf))grv .mop6et positive charge, and sphere B is neutral. They are placed near 3. 6)je (c volppmgl)(ysqrf1each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively ch. x0d8o bvlt)qaw3xd; arged rod charge an electroscope positively?

  An originally neutral elec-mfpk4 z z)ns:troscope is briefly touched with a positively charged glass rod. The electrf:kzn)z4 m sp-oscope

  An originally neutral electroscope is grounded briefly while a positive5hb53 r2k eycvsx8b-mly charged glass rod is held near5sr-bm5b83ke2cx vhy it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leavpcydl;7. g 5iz,d /irf2 ,vgrles separate. Then a negative object is brought .l5dg7gdi;zrc f/yvpri2, ,l near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged objnwf 8a-yqfpm7gcw54t 5tm xb47.nl5 zect is placed on an insulated 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 forward, but does n 4gzn4plc5y5xwa.75mt7f8qwbfn tm-ot 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 om f2*nxae. **4xm slrcf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first ce pn3t i+0s/a6x -jdqzharge is larger in magnitude than the seco36ei0nxp/+ a-zdj tsqnd charge.

  Sphere A carries a net chargef+15enm7u bjhwwh .a2 and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between th. we7wf5+m j hb2nh1auem?

  Two charged objects attract each other with a ceraw.mft7m +y2otain force. If the charges on both objects are doubled with no change in separation, thetm.f 7owm2 +ay force between them

  Two charges are separated by a distance d and exert mutual attracmu :)1m0eivg )t.xxkb tive forces of F on each othe. i) 1u)mkxb:exv 0mtgr. 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 force F. What harm9+, qpup :2z5*eixvig ait: ppens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between tzgiiexap tm9u5,2p* r+ :q: ivheir 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 (3fhdnl3) ;vfcr1o pk 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placedc nlfhvr;k3 3()dpfo1 next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Wh)b m1yzy tx)r5at happens to the magnitude of the force on the first electron 1ty5y) mb z)xrif a second electron is placed next to the proton?

  An electron and a proton are sepu nup q-ck)r/5/vr+xjarated by a distance of 1.0 m. What happens to the size of the force on the prurj)r qun5 +/ x/-kpcvoton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Qh2a osz/s gw li.088fqgbdq.6 is placed 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 corners of the square. What is the magnitude of the net electrostatic force acting on the positive charge at the center of s6..li gfq8 0d/8gwszohbq2 a the square?

  A point charge of +Q is placed at the centroid of an equilateral triangs+v i y-7.w( hjmbqe-yle. 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 7s- y+bj(im h-q.ewyvvertices?

  Which of the following is not anpnmu*)s, t5x(nksx 2 vector?

  At twice the distance from a point charge, the strength of the electr53 d v: lal6lfagm:u5bic field

  Is it possible to have a zero electric field value between a negative and posit.jr y7(r ec9u*g/fc47z flactive charge along the line joining the u.certj7 c / ffyr9 c7*4zlag(two charges?

  Is it possible to have a zero e1urgkuj50 :jx. s8efy/-zurw lectric field value between two positive charges alues.u rx8 -5ku/jwzrg yj1 0:fong the line joining the two charges?

  Electric field lines near psitivf kyu5hm ea;v2 .07ooee point charges

  The electric field shown h +oro w1o3q7o07)0xbze3eb9p b nqsf

  Can electric field lines inte5rd76 gsv f+ gfjv5y2grsect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uni f614udpy f aukb*9nmlyy5m;;form electric field. Give a statement concerning the electric field in th9 ya1b* yuk 4; mlmffu;p5dy6ne block's interior.

  If a solid metal sphere and aphr+s:ny e--l8 : echg hollow metal sphere of equal diameters are each given the same charge, the electricr-le: g- hys+enchp:8 field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tf2n ,* nt jkquly0//fz m/e6apable in a region where a uniform electric field is directed straight upward. What can be said conce,02/ ul*y tem/j/nfpfnzkq6 arning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric c*+ew; pezdkjg,gk254u/s uba:.fs70 n nrg hdharge

  A positive point charge is encu f9db1y+yuyh tt;e*7losed in a hollow metallic sphere that is grounded. 19;*yuy e +fhyt7 ubtd As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equp-s zt,hb **3( pra ljs8pdbx;ezj6t 8ilibrium.

State Gauss's law.

  The charge carried bymnk57-maxtb;d1h/ (mb g 1ghz 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 a net ced8di q+rbfbw:u2n-6 :gq.d oharge of +2.00 mC. How many more protons than electrons does this piece of plast d 6.+nqdq28o:-gwb: uf dbeiric have?

  What is the charge on 1 kg of protons?edp+aof uke)rrm 6 90/

  An atomic nucleus has a ch mgw xx6x7 unc5d *r32t iplnct+bn./+arge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sept u63p zqn+ :8 fxcy3m+ni; /;dxx7 dixw)xpnfarated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respect dy+d;q +xu3p nitnzif xm/ xcx)63x78w:n;pfively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charg1d5dgm;9hs b*(w v bnee, and the force between them is 1.0 N. What is thebv *m eb5 ;dndg19(swh magnitude of the second charge?

  Two 1.0-C charges have a force between therh u49i a(yqom6k; 2zlk.m/c vm of 1.0 N. How far apart are they?

  The force between a k op.+:)uj3 u2qgwuog8mg8 mn$30 \; mC$ 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. tm0-baru* *,)8(qweplj9h x ft /jpxeIf they are moved to a new separation of 8.0 8xp(j)*puwxm hetea- lf *,jt b0/rq9cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-amii8b+,nx *t9yr ewx 4ep8wz7xis. 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 which acts on tp*wnbyz+ 88irexx4im,t9 w 7ehe charge at the origin?

  Three point charges are plddz tihd4+ix2*w sk0 8aced on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the righdtz+8w0 dhik2 4xids* t 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 the following posf8u)rpp z( n7n);nxov (jrpw+itions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC nzr pw)p(xn7n;vfj )+ pu8(ro at x = -1.00 m. What is the 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 se7 3 w2fcfsro-dcond 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 c2fsdw37rof - -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0);ye xvm r10.*jz Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.r 1jv .*zem0yx0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC0)tl7fahq7- 0yw qk, t4jxhnf is at (0, 0). What is the direction of the net force on the 5) tf4aqhx,qky- l70fjn0 tw7h .0 nC charge?

  Three identical charges of 3.0 mC are fe f 1y59sv1onplaced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electros en1yf9v5of1 static force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what poh2-h/ o.-sysng q: :m rw9enjqint, on a line between the two charges, would it be possible j r eqyon:92qw/n:m-hh ss.g-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 =zjilk-0k+l+ 0d*4ef cwd; ncu k(vyn 3 4.0 m. Where on the x-axis can a third charge be placed so the net forf*4wn dn(+k-v30cueyk z l0jdc ;i+kl ce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wh5p e u6ey-r*l9hw /xp zju,u5were can a third positive charge +q be placed so that the force opeww zp5rj5 y* ,uhleu6/xu-9n it is zero?

  A copper penny has a mass of 3.0 g. -c;8pmm738 yagzj ga gA 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 gr,k d ;n(jfjt3yavity by the attraction of a fixed proton some distance above it. How far abjtkj,d; (y3 fnove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonczssk/42rtw px*+gd ) ponducting threads which are 30 cm long. Both are given identical cs/k xw+z g)*4tpdrsp2harges, and the electrostatic repulsion 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 onab q6vf5d0yc3e2w 1(wthz7c f +40e. What is the magnitude of the electric field at a distance of 1.0 m from c t0y623hw w ave1f7 bcnd5q(zthe nucleus?

  What are the magnitude anu w/n96bvltlm gkq;qw v,k546d direction of the electric field at a distance of 1.50 m from a 50.0-n ,mn;l5wgwqb9vl 6ut/k 4kv 6qC charge?

  A 5.0-C charge is 10 m from a small test charoy* 1 fdsr;n0jge. What is the magnitude of the electric field at the loco rn1;0yf sj*dation of the test charge?

  A 5.0-C charge is 10 m g-ozm 7 7b-ke,jhsegpjq lcy 02*88sm 6uu 8iwfrom a small test charge. What is the direction of the electr-g j7qu-p 7g0m86e,s 8 b cs imuwzol*hye82jkic field?

  A 5.0-C charge is 10 m from a small test charge. What is 889 yb9riz (a evmun*ithe magnitude of the force experienced by a 1.0 nC charge placed at t(m byu*i 8re9van8iz9he location of the test charge?

  Two point charges each have a value of 3.0 C and are sila1ou -)m5oj8g1yzeeparated by a distance of 4.0 m. What is the el)-mouz8ye il1g 5ao j1ectric 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 aa,b,xre*v beml4x5a8nd a -4.0 mC charge is placed at the ax b8ab,5xmvr,l 4ee*50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark ofnh/p.c qhpf7; oso 2*n a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric fieldnhpoofp.2 nq;/ s hc7* zero?

  Two point charges of +3.0 mC ai 8; :eqqnv,:mkscz*xnd -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electmeqx, *:z8qk:;cnsvi ric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squa)zf)4 -kmem .z lpqez9re of side 0.50 m. The last corner is occumez4pzfk e9)z l-.)mqpied 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 m .lo7uvmwx) 7side. 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 mC at (1, 0); -3.0 mC at (0, 1). Wm 7m.vx7)l wuohat is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC w-vcnau.q .u)5 , p6vmoif erw-hen it is placed in a uniform electric firwcu 5 .v.-qfane,iu-p v 6)omeld. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass3 ;t/qois7urr 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 dw;fis,(91xcp uol i-0.120 g is placed in an electric field of 6000 N/C pointing downward. What chuicxf9 lsiowd1-,; p(arge 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 pl aqi:)li:dqf2 aced insid f:i:iq2qdla)e a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2bz-296otin zg+y m hy2.0 mC. What is the magnitude of the elecz9tmn-ihyo22 g+6y bztric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carrieo+ -,xgd )wpqis a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphere?x q) -+gwpd,oi