State the law of conservaticv te1g33ne+*u, h owzlv.d4i) u.jsfon of electric charge.

  Is it possible for two negativepw.o0y(utqt+s oju4m1, p8ex) r:hh k charges to attract each other?

  Is it possible for a positive and a negative charge to atc(58y doxvhsmuz; i,+ tract each other?

  A glass rod is rubbed with a piewx7 ap/ow*ptl ;t5ys 8ce of silk. During the process the glass rod acquires a positive *spwpwo;t l7 ax 5y/8tcharge and the silk

  A proton carries a

  The model of the atom show/to 2it g xd4 ov3,ymxviv07)fs a

  A neutral atom always has do59jaqltj-+

  An atom has more electrons than protons. Theem1/yvt2y+zc5u- bdu(zg2o z4f uoq: atom is

  Materials in which the electrons are 98*ib vk6vnf)2nj2ea z td-hx bound very tightly to the nuclei are referred 9i)h86fk v x 2zdvjte abn*n-2to as

  Materials in which the gz1/rbzei8;2 uvl 67uhwhg :selectrons are bound very loosely to the nuclei and can mo;:h1g2 zg 7h /wrzb6liuue8vsve about freely within the material are referred to as

  A negatively charged rod is brought near one end of a b5r)udm1 s3ran uncharged metal bar. The end of the metsr)r153 madb ual bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutrak08fpwg).ruj vwz 5+sl. They are placed near each other on an insulated table. Sphere B is brgj 8 usrkz0wp+f). 5vwiefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope pos;rlfh :8xqv95 hmbra3 itively?

  An originally neutral electroscope is briefly touched with a pos 8boymp:l9t,hitively charged glass rod. The elecyobh8tplm:, 9 troscope

  An originally neutral electroscope is gr;0+slnzly0p s ounded briefly while a positively charged glass rod is held near it. Afz l yns;p0s0+lter the glass rod is removed, the electroscope

  A positive object touches a neuq u mr.kk*1i;:nuqg2 2l1j2mvcx x2wytral electroscope, and the leaves separate. Then a 21u . igmlj2qx; ukyckm n*:r1q2w 2vxnegative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutrao. lmpe:pr5ccw42v;*w l ek7sl 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 not touch the negative object. At no time does either ball touch the negative object. What is the finalr o;me 2l4cpec*w.s7l5v: wkp charge on each ball?

  Charge is

  What are the units of the Coulomb )*d(2bu;lrdv, a rrcdhzg6 g,constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firicu czx)d+k8+ st charge is larger in magnitude than the second charicz8c xd+k+) uge.

  Sphere A carries a net charge and sphere B is neutralp*g lm7m8g jfj(id g40. They are placed near each other on an insulated table. Which statement best describes the electrostatic 7f0 mig8dp4l* jggmj( force between them?

  Two charged objects attract each other with a certain force. If /7wq4u/vbue8nu 3s eb9upo 2wkk + k-2jep2muthe charges on both onquj-2bp2b7+ w8uuwvee/934k2/osemkupu k bjects are doubled with no change in separation, the force between them

  Two charges are separated by 3rq2z+3bjoc0wg v b :qtb6rb-a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance jtqcr 3 r6zo b32g- b0+q:bvwbof d/3, what are the new mutual forces?

  Two charged objects attract eagw2/(e 7s) h n w3m:phui+blpjch other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separapu i(mpb)he 2w/+nsgj:7 l3whtion distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by apb)az -hi u;x9 distance of 1.0 m. What happens to the magnitude of the force on tuaz );p9hbx -ihe proton if a second electron is placed next to the first electron?

  An electron and a proton are separi0(wu qvgd/vhw3lih ino5- 4h+0 tpr. ated by a distance of 1.0 m. What happens to the magnitude d g-q.3r4w 0u/lpoth vvi( h0h5+inwiof the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton as1ron 8z74y xp -0w36fslrfqsre separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electy r sw0l81nssqxz3r6fp4- f7oron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at t2+ apdyn4i jy8he 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 the +an4jyyp d i28square?

  A point charge of +Q is placed at the centroid of an eq/brokmey:, /skko-*juilateral 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 at one of the other verticesske kbmr/o*yk,/jo: - ?

  Which of the following is not a vector .ter bdu 8ei--f-2bjf?

  At twice the distance from a point charge, the strengpah )+5-j xympepbkz;59en+ f th of the electric field

  Is it possible to have a zero electric field value bhi 3+e/u6j rlf3zvxyi bom07z qx6-y 5etween a negative and positive charge along the line joining the two chmih6 vy- /fj56ly ir3zq7u 3bexz+ox0arges?

  Is it possible to have a zerom 1tqdtsf .ato2; *kp7 electric field value between two positive charges alon7t p sq;*dt1kt2ma .fog the line joining the two charges?

  Electric field lines near psitive p3 sw*bflqz x(j1vszx7:mh6zgwyz 8 2:g ,fe7d oint charges

  The electric field shown + (7f bavq;xgg-us2zt

  Can electric field lines intersx3 jletaa k,11w28iyli*axrqwi az9/l5 8g +yect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform cz5sjkk9)2+ iw72wzost igt; aqt ;f 7electric field. Give a statemen2 ;+;2kg5st) z 7w9fqiwtac7zjsiokt t concerning the electric field in the block's interior.

  If a solid metal sphere anmbw685v .ug:zbv i,ywoeiha 2.d 2x.cd a hollow metal sphere of equal diameters are each given the samo iwcv65:.gb m. u.eiwaxh8z v2, dy2be charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unifojjso-8h +xq0o 8;rcmz65l6k jhyx yf 4rm electric field is dir zhyfls 5j0 8x6-ocrkq;+xm4 8jo y6hjected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an knyn k5.7 fk-oelectric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gp)zevffx6uj-sa0wn +-nqg58 rounded. As compared to the case without the hollow sphere, the electric field ajzfef)qwn +pa8 v-s5u- x60gnt a point directly above the hollow sphere has

State three propertiemaay1 0b . 0nni012qkf0nh.ryh fnp3fs of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electronie u9n8p fzr0ryli4-z 0.uxc6 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 c6bzch7 xk+7 v, 1ne-bex sfd5many more protons than electrxk 1b+eb, 7svcfdzx-56n ceh7ons does this piece of plastic have?

  What is the charge on 1 kg of mo)ooe8,8u ke xqvao8-k3n3jprotons?

  An atomic nucleus has a chargem3s g5yljx9m, 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 c l+-ktuv//vd ta7x8o3fg jk(qm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of tvl a dfugt-to+v/q ( 7jkk/x83he electric force between them?

  A 1.0-C charge is 15 m from a seconbkn ,:wldjq j463hgg9svr n);d charge, and the force between them is 1.0 N. r9nv;6b s :gg,wd l4)hnkjqj3 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 1.(hl d fu:uagare they?

  The force between a cbk pr ,bn231e$30 \; mC$ 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 (ajup 79v6/8i xadihqorce. If they are moved topdh/9(qi8j i vauax67 a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 ml3 6ym xrnf;l3C 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 and direction of the electrostatic force which acts on the charge at the omn6 ;l r3xl3yfrigin?

  Three point charges arecd t*srtqtaihr3huay402 *); 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 cmy*0t34d2) uacrhhra tti;*s q, 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 ac of:eor w79kl*gea 60re located 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 forlw*97o krac0eo fg6:ece on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, annwgy9s7 vj46ld 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 w j6yl 9vg74nsat the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -2u(ks+tftm0ymc- bs 0v6hz0 fl o(zd .1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the-0z 0c0u ds( of+tkh26. fs(yblvtmzm net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0)w1, i d)*9mrl:fmohws; Q2 = -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 onm9 wrfs)w m*:hidol1, the 5.0 nC charge?

  Three identical charges of 3.0 mC ap:xtjk*po47 fxy8x u 3re placed at the vertices of an equilateral triangle which m :p8pxukox 4*x3jf7tyeasures 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, which are separated by 3.0 m. wvclz86 u:,f i vc.k4fAt what point, on a line betwc z,v8 cufwvk4.if:l 6een 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 a)l912tkiz.k( cc6jzdmoep .ht x = 4.0 m. Where on the x-axis can a third charge be placed so the net force cek hj c2i dk o.tm(z19zl)6.pon it is zero?

  Charge +2q is placed at ta2yygmmg k.on 9 /le,vl w/+z-he origin and charge -q is placed at x = 2a. Where can a third /wkzll nmg. gv/+me y yoa-,92positive charge +q be placed so that the force on it is zero?

  A copper penny has a ma*nua 5l ,fj+ bomof4h.9, 8 j0dkv i4qobab7vfss 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 gravityh2b t x;fo,-tr by the attraction of a fixed proton some distance above it. Ho- tx rb;o2hft,w far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncondx)18flu-b drh ucting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between - rbf)1xud8lh the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of /ut d k*tg d9nbcy8+fgo7:st/ +40e. What is the magnitude of the electric field at a distance of 1.0 m t/gtcyuo f *dtsb/97+ngk8 :dfrom the nucleus?

  What are the magnitude and direction of the electric field at a distance 6lhb5 -kc)jw cf:lt)3b ng0nlk) l*gtof 1.50 m from a 50 lbn3l-b c 6kt5c)))ghwjk0l tflg*n:.0-nC charge?

  A 5.0-C charge is 10 m from a small +.gbm1.pkxyjwrn /i /test charge. What is the magnitude of the electric field at the location of thkr/ wi+b.mypjgn/x .1e test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction od 7ezi; :lhj)al,lzt5f the electric fielll,hz;5t ) e:7zjdiald?

  A 5.0-C charge is 10 m from a small test charge. r,5d izsvs 6n 0..qytkWhat is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chardtinz rs, .06. sykq5vge?

  Two point charges each have a value 0 dgma idsr*;pz6fxg.,ft; 7tof 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway betwee g0pf7 .x,t r;s;tfi *gdzdma6n the two charges?

  A 5.0-mC charge is placed at the,r fxf:g(pbs6j4sahvo g8b)1 0 cm mark of a meter stick and a -4.0 mC charge is placed at og g1f 4: ,ja f)hrsxpbs68vb(the 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 of a meter stick and a -4.0 mC (i iir0fx /;jsa).ptmcharge is placed at the 50 cm mark. At what point on a line joining the two cha p0/(;x isjrima.)ftirges is the electric field zero?

  Two point charges of +3.sbjnau n :;u- 4k1ji-rj la6.k0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between th:6 j-;unjus1i r.ak-b a nkjl4em?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. b r -i2q/qk.dw h1gnt89hq)klThe last cornk rhq)2.i8bg-d/ln91hkwt qq er is occupied 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 side. Charges are placed at the corners pn 0j0i.+o1jt.g ep ecof the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0)0.eg1 j n+ep co0p.ijt; -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 onl dgc0 6yz.*if a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this eleci* lcyf d.z60gtric field?

  A particle with a charge of 4.0 mC has z s4jfv:lrzvn5 b)j0- 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 isgj sy+zdwp8/e; biep 7+9s.rp -y9b hail(z1u placed in an electric field of 6000 N/C pointing downwarpp7 g(ipbdie1 e ra8yz;+9. zb-/us +ywlsh9jd. What charge 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 placed7hpsdh+ xt:b1o:fvij 0/r ,i g inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electx0fh+1/:sbhri d,o ig:7jp vtric field?

  A metal sphere of radius 10 cm carri7u3i,8p 86 u-n-xlw m8.scb jh ozxqrtes a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from th r6ox 3q.8lhi8j ms -ct-xbn,uz w8u7pe sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electrjt6;z5im3n ouk p6 l +gubq/s3ic field 6.0 cot 3/pgls q5m6nk3; iuj +buz6m from the center of the sphere?