State the law of cons2:;raoa( iooh+ gtxud6rr;6g ervation of electric charge.

  Is it possible for two negative charges to attract each oth/0.7xkgti46 ,h zqug4wuxraaer?

  Is it possible for a positive and a negative charge to attract each otheefqc n (uaf/1elz3.k4 jk .1jfr?

  A glass rod is rubbed with a piece of silk. During the process the glas; ;ed3fzkfz:iw.mc5 (0kqt*yq cx., m 8zlfchs rod ach*f . 5l(c c03t,8m; i; .wdqzmz:z qkffkyecxquires a positive charge and the silk

  A proton carries a

  The model of the atom show(( wulshubv q. b4,3ums a

  A neutral atom always h);b2lt pcnn 3idomd6f4/c) r has

  An atom has more electrons thanhdio)0pnzyp 82mf /5j protons. The atom is

  Materials in which the ele(pkxs dqb0( b1c*w,khctrons are bound very tightly to the nuclei are referred toxbphkwbcd,k*(( q 1s0 as

  Materials in which the electrons are *a*c50h .p dsoy +ijipbound very loosely to the nuclei and can move about freely within the material are referred t .iaippc* *50oy +dhjso as

  A negatively charged rod is brought near one end of an uncharged me yar/(b 2v /b8qt) lpxlf(2kai)jqs.z tal bar. The end of the metal bar farthest f/b/q l(aq zv(b)il.yapk) t8x 2sr2jfrom the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral.z/ld: 8gbmlomb2n (, lh7 vx9v They are placed near each other onxnml97 2g,:z d lhvb/mbv8ol( 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 eli1l7 af ha j3e6my+0csectroscope positively?

  An originally neutral electroscope is briefly touched with a positively c(5 (fa lzx 4l *ru0majjt/eg8fharged glass rod. The electro0(fm5jt geal 8/r*jazfx l(4 uscope

  An originally neutral elecd -adc6 m1z01p oz:3nyvai+j x(l.zwwtroscope is grounded briefly while a positively charged glass rod is hel -xa 31v(oa.+zn 1pdwz 0mjwic6y:d zld near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscopeeb3r z-l6j 4+l ksgwj+, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happ bs-w+lk 4gj+3z6elj rens to the leaves?

  A large negatively chargedkb0oh42f99ufom i2 b7 fo n8k*2hp dxk object 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 b2n829f*xbp074k ohbuo9hkffd k im o2all, 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 thaf-cv0 ;6cmsqj4d4wme Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first char umpqk 3gy14ct ao,:f(,mr6qd ge is larger in magnitude than the second c6mfqm:(k,tg 4 1pqacy ru o,3dharge.

  Sphere A carries a net charge and sphere B is neutral. They are g0 m:jt3q)9 poxd)f ypu1eh*lboa x+7placed near each other on an insulated table.f09uhg* )xbdo:) 1+e al3ox qpjmtp7y Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a c*0 gtzvqr*mer7p4,tyd ki4h 5ertain force. If the charges on both objects are double4g hy04z pktvqi*e7t,5r dr* md with no change in separation, the force between them

  Two charges are separated by a distance d al:t uucfr:zg gw/f7r-m-v(1 vnd exert mutual attractive forces of F on each other. If the charges a(urru17f vc- l :gg:t-zfmw/vre separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to thebbwaj9t9jjay4hu2 8+/ avq4h force between them if one charge is doubled, the other charge is tripled, and the separation distance between thewu4/t+ b8qy haahja jbv9492jir centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are sefj()yxe z-p* /uvu5k tparated by a distance of 1.0 m. What happens to the magnitude of the force on the protoyue k*zp)j5v /-u(txfn if a second electron is placed next to the first electron?

  An electron and a proton are separatemi xzb m 0p60q5;w(dnncrts 40d by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is place0;xr qz 5dsw ( bnm6c0p0mn4itd next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happenuij.l0b+hgdi8a ty 1co93 fs4s to the size of the force on the proton if tf4h31y. j 0ac98l idtb+igosuhe electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Whc 1gkxl:wzqur( i /o m*lla;),en a second point charge of -Q is placed at one of the sqmi)zqg :l*lou/ acr (lx1;kw, uare'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 the square?

  A point charge of +Q is2hf5l6zo1fi a 9h9fgo placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, anhff1hia o2fz965g9lo 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 isxsgtm g4 eixg7(aq7p6*27 mph not a vector?

  At twice the distance from a point charge, the strength of the electric fijc:xtvl h09nx/u, 7ubeld

  Is it possible to have a zero electric field value betwe- vxd:nrh mdl:n8vl+ vd8 k:r7ltc0) jen a negative and positive charge along the line joining the two chargekdd)m+vn 0xv :t vl lrl::njh-7rdc88s?

  Is it possible to have j noqek 8s:-q3a zero electric field value between two positive charges along the line joiniekj 83no-:qqsng the two charges?

  Electric field lines near ( lvd3:v egzh9psitive point charges

  The electric field shown 0x3 om6;28sjxyes ovy

  Can electric field lines inte.2hc y r,x7qp.im:f9k yltaq(rsect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform el8f vmvi 65phsdx:;5e eh/pv q(ectric field. 8 /:hefq s(dxv e5v;m5i6pvh p Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and )dug * ogc( v58xigzu1a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the c5ic* )1 xu(gg8vu zdgoenter and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unii1kum li9u /v .cc*;6j5 hwhfv0/ykyaform electric field is directed straight upward. What can be said concerning the charge on the bli .yu0/kiyhw lmk cjhvfc69/;av 5u1*ock's top surface?

  If a conductor is in electrostatic equilibrium near an t )k4 tko4-da382:v fkc0wyuvg8wj vjelectric charge

  A positive point charge is x4/pqx1dllk :b4 f;t7br+w u fenclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sxqw lb/d pbf4x47;1t+frl: u kphere has

State three properties of conductors in stat82aj 52gq j7btie0lobic equilibrium.

State Gauss's law.

  The charge carried by oe*0p/g irwcmxu.-e 5 mne 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 +2.00 mC. How many more protons than e1kah7x)o ur 5+tw-pua lectrons does this piece of plastic hau)uoatx a7p h1w+5- krve?

  What is the charge on 1 kg of prou 4z+mc7zry *6 b)tbgptons?

  An atomic nucleus has a charg cu: sheop741ge 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 chsicstq/t7:ka. c1w 4hu ;td a7arge values of 2.0 and -4.0 mC, respectively. What is the magnitude o/a s4 utt;7hc:7dac1q itskw.f the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betweewou+xkp475 .y 8lzae kn them is 1.0 N. Woep 7x45.8 yk+kzaul what is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are th*zgmpp 48 idah(:k d,xey?

  The force between a t4j/7:p-hlyw u yzw;t $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm aparth,p7 ijq13qg q zat uilt9w r-l59..;owfzc)v, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm . tc)zi lq,orl;tg5.z9p93uvh1w7 -qjqwfai, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on thv 749v fys6tknw(lwv.vs1e 8ke x-axis. The first charge i.se4ww k6 v (9vftl7nvs81vy ks 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 the charge at the origin?

  Three point charges .d dx70io5 6s6xcyxq lare 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 acts on the 5 07 ixx6docldsx6y.qcharge at the origin?

  Three point charges are locate87 t)n+yma oxed 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 mama+t o 7)nxey8gnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the cen4/ogin*m xndlmn8 p-*ter of a square, and a second point charge of -Q is placed at the upperpn4onm-m/*g*dx 8n li-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 -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q gp:5r6 ea1erp2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magni epgpe: 56ar1rtude 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 = jpiy/+ /qldl7 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charge?l dl/yi7p/q+j

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral t08 .ldgil7uocy/oy 7 xmbi7q4riangle which measure7oyx0 ci im8lbloq/g7du .7y4s 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whi5o)dun:/g v +pose:tdch are separated by 3.0 m. At what point, on a line betedodvtog/n: u + :p5s)ween 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-C charge is at po ; fso8p 0wbz ;puc 2fd+g,z9 25kc7-gweqnhx = 4.0 m. Where on the x-axis can a third charge be placed so the net force oqhz ;bp-9w 2f gkc+57c0ng ;f 2p8ou zwp,edson it is zero?

  Charge +2q is placed at the oric)n85jwufu*9 oh6kee jms x( 9m- evw:gin and charge -q is placed at x = 2a. Where can a third positive charge :x m 5ej-8(e u)fww9o *9sche6uknvmj+q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total ofv 0gl6tlj+x;q:,epg n $4.0 \times 10^{12} \; electrons$ 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 gravity by .tawis.- 4dnp the attraction of a fixed proton some distance above it. ti.4ns- .adw p How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point sidu lg6n 6l/q*znz(3 u9a(ihby nonconducting threads which are 306h( zl z/uidni*ua 3g(nlq69 s cm long. 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 charge2y2injm s9xa; of +40e. What is the magnitude of the electric fielay92s xnj 2m;id at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the et +ptjbfp;4+ylectric field at a distance of 1.50 m from a 50.0-nC chargeb+j+ypf;t p t4?

  A 5.0-C charge is 10 m from a small test charge.ik*z ,4xfaf t/ What is the magnitude of the e*,fxatkfi /z 4lectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of trrapaj7h/4s ) he elec)aa jr/h7ps 4rtric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitub4v2/f hb bj9sde of the force experienced by a 1.0 nC charge placed at the locavj2s/bhbb9f4 tion of the test charge?

  Two point charges each9a2cfe4t ml52md;ei jrwwm+: have a value of 3.0 C and are separated by a distance of 4.0 4cf2iemlmdwwmjr ; 2t ea95 :+m. What is the electric 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 -4.0fz* l76zsr*ivs3 ns/u cbg b9p 6lf(,c mC charge is placed at the 50 cmfbcs sc(vl7ursnf,lbz6*6 9*gz p3/ i mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the cb0j3xas t9chj+ m xw;7hfu84 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining th 4fhb38xcj9xj0htmcu +;ws 7ae two charges is the electric field zero?

  Two point charges of +3.0 mC apuez( jpp*2 yp6q40rr/e ,jiand -7.0 mC are placed at x = 0 and x = 0.20 m. What is the rj e/ i6upap,er*0p4 ( zpyj2qmagnitude 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 0.50sqqc86,m4nrkx e8 wi fc2w z q.e+w+:o m. The last corner is occupied by a -3.0 mC charge. Find the electric field ac8m6:8sq+ q ez.rw2kn+xq,ec4 iwow f t the center of the square.

  Consider a square which is 1.0 m on a side. Chargt6 t8zqwvf n8+es are placed at the corners of the squar86n tzf8twvq+e 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 magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5b bwkb2kbs);5n aqju( ny (,d).0 mC when it is placed in a uniform electric field. What is tyd5 n) b,;u (j(k2bbksw)nq bahe magnitude of this electric field?

  A particle with a charge of eac 9dshdpsx c/ q2 zu,l)9p,/dx5 nv(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 electric fi48u zlbs 9cj83,nmym,xj /esj eld of 6000 N/C pointing downward. What charge must be placed on the 38z js/8 my4mnjucslb ,ej9, xball for it to be suspended?

  A foam ball of mass 0.150 gb4vi 0ich3rq 4 vbz1b/ carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and ih3zicv/ 41q rvbbi40 bs 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 +2.0 mC. What1-psiu5e1m )mk hfq+r2*zs k;s- lgcmzt1j+ m is the magnitude of the electric field 5.0 cm from the sphere's sur5k h1pz-suf)r;i t+11qc*+2sj-m kmsgm l mez face?

  A metal sphere of radius 2.0 cm t/g3xq7 uzg z sq)hh1/m3(piv5 )ww oucarries a charge of 3.0 mC. What is the electric field 6.0 cm from tuhz 7wiwo1(qp) /5vxtg )3 humsq /gz3he center of the sphere?