State the law of conservation of electric: zn.q01qh a xh/une5r charge.

  Is it possible for two negativez6:hh bns3c6:o gd1* ,oi gzju charges to attract each other?

  Is it possible for a positive and a negative charge to attra hkxw6 w/ao,t0n, 8jipct each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod axp 3iebu/4g 5tcquires a positiugpx4 ie/5t 3bve charge and the silk

  A proton carries a

  The model of the atozch (5r*o6 2 sm u/avufsf +:,wdoljxn1,1ivmm shows a

  A neutral atom always hg/pdueuyq3 )0i* w(r was

  An atom has more electrons than protons. The atom)olqxlc01 r6b is

  Materials in which the electrons are bound very tightly to the nulzf bs(rnv/*v 2f-qi3clei are referred to asrnz v/ f2v*l(f-b siq3

  Materials in which the electrons are bound very loosely to the nu 3*veie5osy jyvo1i- skjwr t .8(oa4,clei and can move about freely wit31rkia 45seiy. jwj8yo-(voo,sv*tehin the material are referred to as

  A negatively charged rod is brought near one end of a kl8v*(kn5,11 logn 9 rn:eeqshxu ci+n uncharged metal bar. The end of the metal bar farthest from the chanl1v*cxl n9 g 8:un ro+ik,hk5se1eq( rged rod will be charged

  Sphere A carries a net positive charge, and sphere ia*h68ovvf,e( ) 3mpbf pkb)m B is neutral. They are placed near each othevm bao )b,pfm*68vekf(ph i 3)r on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscltl o 9x.xf- n t4w/81zevron;ope positively?

  An originally neutral elt /*-,5 spswsohol/ ptectroscope is briefly touched with a positively charged glass tspl shs5/,o -op*/t wrod. The electroscope

  An originally neutral elec;(ae vb hnc q)aai1,on.(x8rhtroscope is grounded briefly while a positively charged glass rod is held near i8)ixh n,v oceh(an( r;.qbaa1t. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroschp3iyju3 vmp 1jwm0 y5uic(1-rq7ei;ope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the lea(wu i-m jhv13rycj7mqi3;peu5 1ip0y ves?

  A large negatively charged vwc1;ueh lk: u(f* 34hyk5movobject 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 thh k:uk; v5(y4wlhfme *o 31ucve 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 Cx 8r/5cof1v vlpm8*rl oulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge )(k - kismmvc:qt gnsf)4l1qcjvy/: 4is larger in magni()jk1mn:cq )4scvy/vl tfmgk4:iq- stude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nearbtn u55ele cq;o*:u7t each other on an insulated tabu o;e l t*tu7c5e5:bqnle. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargeh: o85apmebrqfg;3 b abcgl3m0u4 6i5s on both objects are doubled with no change in separation, the f hlfa4 a0pbc8q6g:orm5 5g3m;i3b ueborce between them

  Two charges are separated by a distance d and exert mutual attractive wt8 g(zw*dz*uo88mmcj. n;klforces of F on each other. If the charges are separated by a distance of d/3, what alug 8*w t.( mw*cmzjd8ok z8n;re the new mutual forces?

  Two charged objects attract each other witexa4 +fnomyo,nip+-. h a force 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 .e x,-oiyn oma+pfn4+ is now equal to

  An electron and a proton are separated by a rzla) xco tum1igl2 56o9r52idistance of 1.0 m. What happens to th 1rliz2ogx) io2a 9 5um5tl6rce magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are3* twvjfoq5w3 zxda4+ separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the prtwd fj v4*3o+z3w5xqaoton?

  An electron and a proton are separated by a distance of 1.;5wc5 or gww:f0 m. What happens to the size of the force on the proton if the electron is movef ;o5wr5gwwc :d 0.50 m closer to the proton?

  A point charge of +Q is placed at the cly-;kj q3not q30 p2meenter 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 3jn-py qt2 mo0k3e lq;the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. q:chva p-1u 4tWhen 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 oqu4-:hv1c tap n the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followingomn9+ b evs3pfd2 ;y0d is not a vector?

  At twice the distance from a point charge, the strengt ..l6bt qi((f hkr /dlplb,ucxu2a9* wh of the electric field

  Is it possible to have a zero electric field value between a neg1u k7r wv, ,4h h3kfp*hqw6jjgative and positive charge along the line join,hg1q f*h 4jrwpk vhk 376,wjuing the two charges?

  Is it possible to have a zero electric field value between two positwk 8l5+*n hf)83eogts1clbs 0keb n,zive charges along the line joining the twoole*htfg8 ,1es l n+z8k)bws3n5 0ckb charges?

  Electric field lines near psit-:o/y/7tc vhbu gsvn7ive point charges

  The electric field show6ay my*b q+cat4jk 9vnjoe6m0x- (;jxn

  Can electric field lines intersect inxzz *z*h-yj9d free space?

  A solid block of metal in electrostatic equilibrium is placed in a unhn7swv j9 6ofjc i*len 7l1(u9iform electric fiel ns1 7wivl*9on fjj(c9eh6l7 ud. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diametes;3qrlskc( s1qtk 1f(y aamwd u+f5(5rs are each given the same charge, the electric field (E) midway between the center and the surfacefy a; fk5rqs+dsuqcm3(((l1 t5wa s1k is

  A cubic block of aluminum restsjnzf)0)gr fa8po5g o 6 on a wooden table in a region where a uniform electric field is directed straight upward. What can be said conce0gza8onjo)gp f5f 6r) rning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near anh+szo7 q v w+kp,0jw1.my-dak electric charge

  A positive point charge is enclosedco22 vtzgrr(kr p598j in a hollow metallic sphere that is grounded. j (z89r2rrtpk25og vc 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 statpi,2u 83+*uhr cp umhric equilibrium.

State Gauss's law.

  The charge carried by one elecg0id8b :ax5 8uhnq1kc tron 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 +2.00 mC. How many more protons thanp84) kgws po4i electrons does this piece of plastic havpg 44)w p8ioske?

  What is the charge on 1 kg of protons?vr42k cvm, c3 m4)cprbgl +xy4-gd5ju

  An atomic nucleus has a y1+bkqk6nlvy :aw7d:charge 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 chayb3 d zugh17ffz/ek7 /rge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between t7f fy/eh 1bu3zkd 7gz/hem?

  A 1.0-C charge is 15 m from a second c 6 h()s+pwfi/r*:uzqqute yd0harge, and the force between them is 1.0 N. What is the magnitude of the /r(uthw*yp s d fi q0+6zq:)eusecond charge?

  Two 1.0-C charges have a force between them of 1.0 N. How (yxmxj-9 i,.ozpo6u kfar apart are they?

  The force between a cfr12 j4bk/tn$30 \; mC$ 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. If thetv,rq-/ 8 wjjpofa+* o b3fp+gy are moved to a new separation of 8.0 cm, what is the electric force between them fjvp*,/aj+8-fbpqwg r3t o+o?

  Three identical point ch5rkueq 12.vpuhf ic2l:m 96w )jyp*tqarges 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 the third is at the 100 cm mark. What are the magnitude af *lqik2.ruqypt c :hwm e v95261ujp)nd direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on thuh xpu:;g98zj e x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m;8gp9x h j:zuu 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 the following positions: 5b;pew 0lhk p1Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.001 hbp;l5pew0k 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 charge?

  A point charge of +Q is placed at the center of a square, rq0+sy xxjzo t0 o**u58gkn ipr,7y;a 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 magnituro0z 0 uxp,q5 s*kiaxn8gy; r y7oj+*tde 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); Q3 = v7r7piy u+g t;1pa8.b* o cvum5.0 nC is at (0, 0). Wpuvg ; y+.rp8u*ao i7vc7mbt1hat 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 atgw .f2v ,qn)cl)mji*tv*wxc ) (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direclq., n m2)cf *jwvv)t )iw*xcgtion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an 1bcvw.o9)y nwequilateral triangle which measures 30 cm on a side. What is the magnitude of the )1w vow .cnyb9electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m(n55 cgp hy0jva1 k ki6dyle,+. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would i5hgnp5, 0 d+ ja e(yy6k1vclkbe zero?

  A +3.0-C charge is at the origin and a +9.0-C charge )65mv6pslo 3 r qibu.kke 7os/is at x = 4.0 m. Where on the x-axis can a thi6.p 7si)k q6boorl3mk ue/vs5 rd charge be placed so the net force on it is zero?

  Charge +2q is placed at the orii5inz3 r-ds n *9ufpb;gin and charge -q is placed at x = 2a. Where can a third positive charge +q be nfn* ipbruz9isd5-3;placed so that the force on it is zero?

  A copper penny has a mass of 3.01oyumv 7fc6: ye ,dt2+o-u ;a(ygj ipc 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 up against the druzhwm a3frfoz2f )uegqm9 )566 b/+ force of gravity by the attraction of a fixed proton some distancrqh93 ugr 5u/fa)m2wz6bd+zm) ffe 6 oe above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hunguxcf u 7l d4l13;0xam5 rewa/t from a common point by nonconducting threads which are 30 cm long. rlt fa7143m ux5;cd/uwe0 alx Both are given identical charges, 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 of +4:op*zrq ez qyii41/8o0e. What is the magnitude of the electric field at a distance of 1zz8e/ i:ypoqq*ro41 i .0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 11 tum3zws,-zb0+wnt.z) mf dp .50 mtpbfzsn.zm1t )wz -u+ m0, d3w from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge.c( fpf7q u*-i-cslo. z What is the magnitude of the electric field at the location of the test charge* -ufpz s.i(cl o7cf-q?

  A 5.0-C charge is 10 m from l)6 g/e/nnboxl,ae nm0q mh(6a small test charge. What is the direction of the electric fiela,lnm lh6eex/o6 b0mnn(g/ q)d?

  A 5.0-C charge is 10 m from a qgq534w7mo6a) ry.rfp o g ju;small test charge. What is the magnitude of the for .)o64gy wo;rgp3 famju7 rqq5ce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each havepi:-bg/zbu8uc2u ole*hn; 2i a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point :i2lhgizu;8bcpo/en u 2b*u- midway between the two charges?

  A 5.0-mC charge is plactlu3wu(2v1 j1(rto y wed at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 j2t u1r3t(w1yuw lo(vcm mark. 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 sti, 4td19wn xuk( ul)uorck and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining1 9wk(uuxlont, d ru)4 the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x (ci; k)4mm yjy= 0.20 m. What is the magnitude of thec) i y;mm4kj(y electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sidcei/4ge(tk 8co q d.v(e 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the cent.d4 ci/ge( tve c8oq(ker of the square.

  Consider a square whi(:ui 9-d 8ma7z hhrxavm- il/vch is 1.0 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); mrihi(-a uz7-a 8x9l:dvvh/m +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 a charge of 5.0 .4*ypo0za u.0ezj5xse2a tp rmC when it is placed in a uniform electric field. What is the magniau*z te..jp ryezs2pao 4x0 50tude of this electric field?

  A particle with a charge of 4.0 mC has a mass of *ahv5owkw:py sp*:s ($5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is pr+f 1fk3*ysyclaced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suf+1r3k syy* fcspended?

  A foam ball of mass 0.150 g carries i/pdl 6*:d jhsabfb* j rj-:n5a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against th-f:*djj 5 *nsl/6d bia:j bphre force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a a kvics m lg.bzks(i3+804 a)4j.oati charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the spl+js(gi v 3 8za)kbma.0cs.4kt4iaiohere's surface?

  A metal sphere of radius 2.0 cm carries ank+*-, c( .rb wop6pv es,p6 wclrh:ta charge of 3.0 mC. What is the electric field 6.0 cm from the ce, pbes(* h p66 prralt. :ck-+oc,wnvwnter of the sphere?