State the law of conservationj;s 0 nbp:pmx3ulzz51 of electric charge.

  Is it possible for two negative charges to attractkdjsj8ns dp2+o p+), t each other?

  Is it possible for a positive and a negative charge to attn/ ptss(mqc; evs :*4yract each other?

  A glass rod is rubbed with a piece of silk. During the process the 17ul59x2j ritb2zdf+e; bh cy g9pwd2glass rod acquires a pos fizg +ch22u7;jdwe 1bp2byr 9ltdx59itive charge and the silk

  A proton carries a

  The model of the atom shows am9 8p0ulla6ib

  A neutral atom always has2etl6uu l w;xpbp f*(8

  An atom has more electrons than protons. The l/x 84ppe t-po6freh.atom is

  Materials in which the electrons are boundk4xxko-)6,eczas g d. very tightly to the nuclei are referred to aodkz.gx4 k)-6aesc x, s

  Materials in which the electronse 9 xeru0o)gzdzbz 03* are bound very loosely to the nuclei and can move about freely witur 9ez)gez*0xbd0 3o zhin the material are referred to as

  A negatively charged rod is broughtdds( j9tw2lbu9j -p ,0q*wfza near one end of an uncharged metal bar. The end of the metal bar faq99b*wp0dw(2jzsf tl d, -ujarthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neb k5g7-/z zmnkutral. They are placed near eakz 7n/m kbgz-5ch other 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 electroscope positmgm l3f l04x/d.scaw wr u,- xoefr0z+d5xs16ively?

  An originally neutral electroscope is briefly touched withua:lccj8au .p/,u x o3 a positively charged glass rod. The elect u,.xa38:j/louac c puroscope

  An originally neutral electroscope is grounded briefly while a positixpti l3x9:w2tvely charged glass rod is held near it. After the glass rod is removed, the electpxxt2i3l 9t:w roscope

  A positive object touches a neutral electroscope,7-lh+yu jy+ mg and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it-g++ y7mlu jyh. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neufvq80qp4 l1 twtral 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, fvqw8lt1 q40p 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 mm p i1rz62z3a+rk2xzthe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distn7b wmg8ni 6*owvdv0 +; w7 yh3beld7kance d. The first charge is larger ibi*y7dwm+n7h o g 8enw7;3l 06dvvkb wn magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed iut 61tz; 0w1z38rd obqbbgs1 near each other on an insulated table. Which statement best describes the electrostatic force between g0 z6bwu3oz 18bs t r1diqbt1;them?

  Two charged objects attract each other with a certain force. If the cwf rs+lurnz919 e6) rpharges on both objects are doubled with no change+zefln9wu)91 r sr6 pr in separation, the force between them

  Two charges are separated by a dillula+p/si36 om8qo30i. -9dm-sto bhxf8v b stance d and exert mutual attractive forces of F on each other. If thbsvtl69+ -d3h ou/3fiopm.0l8xa- s8m qlibo e charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other w8e/3esz nj a128eqowcith 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 centerj /ca8w8z se e21onq3es is reduced to one-fourth its original value? The force is now equal to

  An electron and a protonegicy .itykt+u g n/;9u 6tf:) are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed6gn.:;tfu c9yu+giit )/ yk et next to the first electron?

  An electron and a proton are separated byrt45 u(kyyz,jgd3 k2 h a distance of 1.0 m. What happens to the magnitude of the f4jk,z(25 hyrk t3dy ugorce on the first electron if a second electron is placed next to the proton?

  An electron and a proton*- q.xljbo99g)9 nbiy1cf qpv are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is myv)n.1bf -olbqig *j xqp9c99 oved 0.50 m closer to the proton?

  A point charge of +Q is placed at thebjcat0 .qrq,- 9cp( uk 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 p.bu q rck,qt-c j09(aacts 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 is placed at wh005u33ehl ( +gksmyf -dewgxuf*d . the centroid of an equilateral triangle. 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 x-3l*fhw0d0 u3km( hg yf5eu deg+sw.at one of the other vertices?

  Which of the followin3gn 9epnd e9e6g is not a vector?

  At twice the distance from a point charge, the strength of the electric fieldgcn7p 5vds3 *d 36zlpshqm -x0

  Is it possible to have a zero elecy m)1 hrqig,0wtric field value between a negative and positiv ) w,ry0hqgmi1e charge along the line joining the two charges?

  Is it possible to have a zero electric+b 9/vnz jwpx4f ;f txr;7qer; field value between two positive charges along the line joining the tw+9zxb rpq/;e4rf ;xftv;j7 wno charges?

  Electric field lines near psitive point charxto ( cmv(u2 ggq6:7jlges

  The electric field sho s8:1y*xpmoea g cn9q4wn

  Can electric field lines intersect in free spa w- ;cz)vyqln8ce?

  A solid block of metal in electrostati6nn9e 4h +xoztc equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in tno txz h4e6n9+he block's interior.

  If a solid metal sphere and a hollow metal sphere of k .we xe-8:n7up4cxldver25ertyuq9 4t+4sa equal diameters are each given the same charge, the electric field (E) midway between the center and the surface is7wt9akvu+2 er :8e5c.s-y4t e q4xp4dxulern

  A cubic block of aluminum rests on a wooden table in a regixo z1e-x)b 9mcon where a uniform electric field is directed straight upward. Whaxb1em)x o-z 9ct can be said concerning the charge on the block's top surface?

  If a conductor is in electroswx6i 9j6/hy uqtatic equilibrium near an electric charge

  A positive point charge is enclosed in a hp( fchc:39lnjr 9p dxc) fm qq/6;-ohfollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point dir: qf- ;jcrohqnpcmxfc(p9l9 6/dh 3)fectly above the hollow sphere has

State three properties ovq/ib8m)wrxs4 sf. y:8i-t xqgd )w h.f conductors in static equilibrium.

State Gauss's law.

  The charge carried by one ele7x0 jk+qldio4ctron 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 +z42dr;y wrikgy t*u8 ,2.00 mC. How many more protons than electrons does this piece ztwd8*4r,y;2y u k griof plastic have?

  What is the charge on 1 kg of jjii2s 7q2p9dprotons?

  An atomic nucleus has a char e.dtr vn2)oj; wp/ql3ge 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 va(+7h rjcj9w fplues of 2.0 and -4.0 mC, resp(7wc+fj9h pr jectively. 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 betwee 0*8rmtilrk5+ 7lgs7erqrj(l :bzq *cn them is 1.0 N. What is the magnitude of the c7e t7 lrm q(0*j8rl+rl:gbz *rqsik5 second charge?

  Two 1.0-C charges have a force , zqgjj)i2yz4wz(6px+bj f y4between them of 1.0 N. How far apart are they?

  The force between a jcmto5huyvu9 ise5)- f3x4x .$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cmvu.goq.tk30ma 1qwk- 8 v5t t xoy:v;s apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betwx0m-a vt8;sot1t gyk v 5.:oq3w.u vkqeen them?

  Three identical point charges of 2.0 mC are placed on the x- z.tkb -;gv: )q7s*zfv llo*fuaxis. 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 auvo7z:;- *)tsfklf l.b*g vz qnd direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on th d7vq,l3mktn8bp hyq98 h9 ic1e x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the d hp3c71lq nvbkm 98h9yit8q, 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: Q1 = 2.0,jl z -t6f. (i3c8kncxscj:t d0 mC at x = 1.00 m; Q2 = 3.00 mC x 6cjc .cn8j3(s ld,ft- k:ztiat 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,uf2jhi f ,nn07 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 magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lower-left cornerh,ij7fnf2un0 ?

  Q1 = 6.0 nC is at (0.30 m, n;x(el r6i(c r)dvw3pl39yji0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magn3;)ryip3x e ljrv6wlnc id(9( itude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = wy( 9+ n6uc(;krl pgut-1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the +pug uct k(rw9y6n(;l 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of 0ebpz9+0jhl o an equilateral triangle which measures 30 cm on a side. What is the magnitude of the elect0z op0jh9l eb+rostatic force which acts on any one of the charges?

  Consider point chargeg:bh)*1y17 uyp4,e vmib (lpda qetm prip/-(s of +Q and +4Q, which are separated by 3.0 m. 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 woulqpv e*tr):u1e impp 7apb(,hb/1 ylgmyd -4i(d be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge9tg1dd)tqkxce 7(.c g is at x = 4.0 m. Where on the xkxtg)t (d.c 1edc 9g7q-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x =t 6* i*e/pwrj.rdpol8 2a. Where can a third positive charge +q be placed so that the fopd .r/* 8ltwr ep*i6jorce on it is zero?

  A copper penny has a mas,zu( m+iky+ gis of 3.0 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 force of gravity 50iqkvv8x0c0/8 v z0qd sn jbfby the attraction of a fixed proton some distance aczfvi vd/8j00 k 8s0x0n5v qbqbove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung framxe ls-l-7;uh0 aqc3 om a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulcux; mh3q- e-lsa0la7 sion 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 +40e. What is the magnitude of the electaqj( dza;p6 5 neg71mcyt8d ;tric field at a distance of 1.0 pgd5 z; dtn(ytmac8q ;je6a 71m from the nucleus?

  What are the magnitude and direction of the electric field at a distan8e 2 i42 aelchh4d3t9.k2 u hik*zwvwkce of 1.50 m from a 50.0-nC cha k iawt w*8e3cukzeh 42v.hli294kd2hrge?

  A 5.0-C charge is 10 m from a small test;76e 6gkidb2 j*w mncc charge. What is the magnitude of the electrie w;ckc*jdb 6gnmi762c field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test 98 giaadkkj 1.q44bw61u ghkncharge. What is the direction of the electrickag9bq n 4uk8gj16khdi1 a.w4 field?

  A 5.0-C charge is 10 m from a small test charge.yx qbebpsu7/ 3 w*b5hw6rly6kp3-4n b What is the magnitude of the force expbnxql 7brp63whwby5s yu6k4/ebp *-3 erienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each*z(u;ro;5:cg uuptp +b 3bzm p have a value of 3.0 C and are separated by a distance of 4.0 m. W m:rt *( pu upob;+gzcpu3b;5zhat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 c5oq3a cc5 +omk m1q988+wawar k0mznt m mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the ele9+o c3qzo a5amk0n w rmt 85w81+amqkcctric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a me1 0tq z3lki;u* ;xgdgoter stick and a -4.0 mC charge is placed at thekgd u3x*tq;;gz i 1ol0 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7xxz ffw+,-89 6thsv mo.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field,8 hf6txf9m xsw+oz-v at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 aiu: rv5g-)nvm. The last corner is occupied by a -3.0 mC charge. Find the electric fiv u:5)vga- rnield at the center of the square.

  Consider a square which is 1.0 zo62 (mt)uu4ac(sgfnf hum 6t)c6o3lm 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); +3.0 mC at (1, 0); -3.0 mC at (0, 1). Wh(oat umfgn tuh(3s62) l6c)4c f6zumoat 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 when it is pla9yiz/e- w ism3pistyk+6ipw q- ,. vz9ced in a uniform electric fieyiipqe+ - 93 - wim/.wvtsy,9skz6pzild. What is the magnitude of this electric field?

  A particle with a charge of )zt6 ,n,td,d 3mzgm(n8woow e4.0 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 6;z :say4by n11p 0f jd4rirtfr0i4rzin an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for djib1a4;zz rsfy: yp 0r460r 4 nrfit1it to be suspended?

  A foam ball of mass -;6 s4j s1dl bssk*pu f2b4n()ppv dlz c)o;ii0.150 g carries a charge of -2.00 nC. The ball is placed insop 4 1ip bn*p z6l4s)i;u;cf2jbvs lkd()-dsside 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 +2.0b tp:o3e0i w7),lx+tqvev6xe mC. What is the magnitude op +x70e xvq)i 3tw, 6veeto:blf the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radid19-nvjy dg+-.ypnm kus 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm frod1jd.k9vm np- -+ygyn m the center of the sphere?