State the law of conservation of ele .j4qxcygb6h )ctric charge.

  Is it possible for two negative charges to attract each other? fjw0ngiu:d)j 1v r 0q)6dek(t

  Is it possible for a positive and a negative cha/- o*cl 3um* eoh(mtgfo/)bsaya)) g lrge to attract each other?

  A glass rod is rubbed with a piece of sio3bjr9l5z/ b zg zj4o3lk. During the process the glass rod acquires a positive ch4zjjgb 5ozl/9z3 r3ob arge and the silk

  A proton carries a

  The model of the atom shows auc vdy;zjg1 ;qil++x219.ykkq(qra6unhh y5

  A neutral atom always ha+ te71sgyczdop e,( ht20( s0/i cghxrs

  An atom has more electrons than ps1wd8v8cbu2 pd.lm e v+vg (2erotons. The atom is

  Materials in which the electrons are bg mq7wg:.c/,uwv6)b/lk uycff5 zel 7ound very tightly to the nuclei are referred :kc5 7 7f w mvw6g /l,/.ly)bguzfcqueto as

  Materials in which the electrons are bou lli itfmek8e3e,:5ybdc+. mmm * vi07nd very loosely to the nuclei and can move about freely within the material are referred *emvlik 7y,8 m+5il3 iefmmd.0be :ctto as

  A negatively charged rod is brought near one end of an uncharged mfj i6lv k4.rrk2sf*,hetal bar. The end off j 4ifrr *k6,l.svk2h the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutp)w0,oik adj3 ral. They are placed near each other on an insulated table. Sphere B wi)p ,oka0jd3is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope rsaa :19;7g3lai j9vps (tqxxpositively?

  An originally neutral ele k4/ xu0e(xu irl.gn :ues:/5y.sceuq ctroscope is briefly touched with a positively charged glass rod. The electroscopeu: /(n 4l.cs uk/5y ie uuqsxgxr0.ee:

  An originally neutral electrlvyqcl169 4aw7v3z nuoscope is grounded briefly while a positively charged glass rod is held near it. After the glass rowu lav3 769 cnyq4lv1zd is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate.k/eafmwu5* xmi( y4mbs*fdv(8 ao c3; Then a negative object is brought neaf a( ao(k4/cu m5b*8y3vfm i*exswd ;mr the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged objjr0 l9*t.h kye th6,cnect is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallihk6, c*r9t htej0l .nyc 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 final charge on each ball?

  Charge is

  What are the units of the Coulomb c vu u)wlg+btbz( c19k2onstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge ish 3 iv cyt+2 br8aupc*fpa.v6) larger inc.2bapi8 acr+v6ft)yhv *3pu magnitude than the second charge.

  Sphere A carries a net charge and sp)vtez;4ukez ihrht3.b2 wv (ewp 1+g/here B is neutral. They are placed near each other on an insulated table. Which statement best describes the el+ w v r gu2v ;hwetpib4.ez/t31e)hz(kectrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges onv+a dfl+j- uztdsq*kd68+ ,sh both objects are doubled with no change in separation, the force be-tf ds zjud8dh +k*,q+l6sa+vtween them

  Two charges are separated by a disw(7(c:m dz (*knba eohtance d and exert mutual attractive forces of F on each other. If the charges are separated by (ah emb:o (z(n7wd*cka distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to sb ftl.3pn o45(5wjrsthe 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 itss( .3fjw55bpt4oslrn original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens to u;/::f9r nyjt 0alikq f8/tclthe magnitude of the force on the pro9/lj q 8 fac:tnfil; k/u0r:tyton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. 4 y )vupq cr40zvdz9;j What happens to the magnitude of the force on the first electron if a second eq)dcjr0p4 ;zzvvy4u 9lectron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Wl i:;exkwem h.:2m gk i2(woi8hat happens to the size of the force on the proton if the ele:i h lmekgkmieio; .2 8wwx(:2ctron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the ce 52v:u *ydl+p; axyhy4.feglenter 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 squpyuxgyhf5+ e l2y .ved* ;a4:lare?

  A point charge of +Q is plac0ccv)qpg)3zn tne(c +ed at 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 forczvec)tp3cg0qn +n )(ce that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followinsq6n4: o jt,an2p dgi-g is not a vector?

  At twice the distance from a point charge, the strength of the electric fieqr1/vh 0q0og7vr5vrold

  Is it possible to hapk h34hi h2kv-ve a zero electric field value between a negative and positi-43 ikpvk2hh hve charge along the line joining the two charges?

  Is it possible to have a zero electric field value b pc3:(uak+oyjetween two positive charges along the line jj(3oau yp: ck+oining the two charges?

  Electric field lines near psitive point charg1l 2qs-b+bh sqes

  The electric field show )/ 7 *ulm2, -egmmr9lc5jlg7fad cpvbn

  Can electric field lines intdu; aw4c5x: blfyse7(ersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in tk 8* sn gl.ljrmxar9-fk/ +h8a uniform electric field. Give a statement concerning the electric field in thjt 898slx.mlfhk+rkr/g *a -ne block's interior.

  If a solid metal sphere and ak61ua-5wt um p htr)fy5z +1mm hollow metal sphere of equal diameters are each given the samr kfm umwaph -1t5zytm)1+ u65e 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 whercaz.6w qootkjg8 k gr (d*p55*e a uniform electric field is directed straight upward. What can rpdc5o zog6gq.twk5 *8j* ( kabe said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an 2 va(wyreh1p r pck29m* gf18celectric charge

  A positive point charge is enclo.mgvm0v 6v2 w)ubf4iysed 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 vgm)vbmyvi.w24f u06 the hollow sphere has

State three properties of conductors in stat8a0h6hhy+h xx5ye1 wjic equilibrium.

State Gauss's law.

  The charge carried by one electron ia +oc)-xn n*f(8 wubfws $e = -1.6 \times 10^{-19} \; C$. 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 manyhupd)0aigya+ / j6r5a more protons than electr i6p+5raaj 0ud/hgy)a ons does this piece of plastic have?

  What is the charge on 1 kg of pr3xt *trgn u5z7otons?

  An atomic nucleus has a charge ofjlxeuf4v+- g*cpo5 b 3 $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sehlzsr t)iu2049ff/30ab jml j.)a x meparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forlj)x .hba ufimr0f2mt30 s9j/l )aze4ce between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them.p*prnhq f0u c. z(r:o is 1.0 N. What is the magnitude of the second charg :*pf0zr(ourp .c. nqhe?

  Two 1.0-C charges have a force bsh 5i tle:y84letween them of 1.0 N. How far apart are they?

  The force between a 0g 83xz dyg/7pwndisl2n .2eo $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.i1z7nkt. qz(-a ub y*/3nn qms0 cm apart, experience a 1.0-N force. If they are moved to3nq/ 71 mbz.t ny*-sizak unq( a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC ath)/ w,po3kjlre 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 electrostatich3jwlk t),o/ p force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A chargf*js ws 95)9,rxbbjsve of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 9b,)v5w * ss9jbrxs jf50 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 locatpn8e en5c)echwbkl9:l ); vk* ed 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 mkh9pv l5 k:len*c) e;cnw 8eb)agnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the cenmlzdw h4i e5h u:1+vw0ter of a square, 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 ahw+muedlz415: iv0 h wcts 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,mcius2:m6 mh7n p*(u t 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at *u7s u(i2:m hm cnptm6(0, 0). What 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 at y.z gfvo 9mv(:(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on th (:9vz fv.yogme 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the zs, ohouwzdjs1jlo).*::q erwn. d3 6vertices of an equilateral triangle which measur*:13 u:hdlz so6w,.de jozwnjq r)o .ses 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 v6ps2,h:au5 ub jcyds14n gf/and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would if42uydc1n 5hvpsjb,ag: su6 /t 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 x02,7pxm id6; rkt(5tnu wvc ga = 4.0 m. Where on the x-axis can a third rg 0xp(2,akw75nu6v t; im dctcharge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charyzuqdhp1l3 36d29r d+ vpvez 5ge -q is placed at x = 2a. Where can 9dpy3uv +3 zr6l edv1p q5dhz2a third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total xkdk x )fo02e9of $4.0 \times 10^{12} \; electrons$ 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 the attraction k+a wr/6xabf-o:d+p 2a ohni6of a fixed proton some distance above it. How far above the electron is tr2 xahbw+6n:6dopia/- + fokahe proton?

  Two 0.20-g metal spheres are hung from a colax .e- :go:oja:,vddmmon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsioog.ddal :,oe jx:v-: an 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 thcx fp1rrjha(v7fl;f- ,j77 mh nxc+s9e magnitude of the electric field atj+7a( rh,nrxlv1fc - sj9c ;fx7f mhp7 a distance of 1.0 m from the nucleus?

  What are the magnitude and)dp x9* x+w31;s dbpw;x8t bpdh(eucc direction of the electric field at a distance of 1.50 m frd puph93p(x+ewdc8);cxxb *t1s;d b wom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the e7hw . 77p8 -)oydhytnnlg ej9olectric field at the l h.ywed 7p-lg8h7nnt9)y ojo7ocation of the test charge?

  A 5.0-C charge is 10 m from a small te(h jwrao0*a+0wvn l3h st charge. What is the direction of the eloja3( arw+0h*h lwv 0nectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magni944 n*w km3 3(nv9eeajeg* gp8 tpdwistude of the fo*nwt e8w sg*3mn(4i9p epd a gj9kve43rce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance ofhd t ol0/z(0vcxx;r h+ 4.0 m. What is the electric fieldzcdlt(/x+ v0rx; ohh0 at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a izlw/ v .owtib4fb k:q*i/m(1dt:8kdmeter stick and a -4.0 mC charge is placed at the 50 cm o:wlt dm/qf kbviwb ik8/:(ztd i41.*mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at th)9 k*sk6a)bm* opc:ofw6:aflyhj5n q e 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 joiningn) oj 6w)9l:*kmaay:qfosk5cp6f*h b the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 . :ttrfon-hx.iya, r, mC are placed at x = 0 and x = 0.20 m. What is the magnitudexr h,a.yn.ir:- o,t ft of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners oh80*;ux 4sm -m zw8itq smcns)f a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field a*iumw mhs;s8xq0 t8sm)z- n4 ct the center of the square.

  Consider a square which is 1.0 m on a suc.ow;v.z0v a ndc-sxzgm 0v0v-8 ml) ide. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0azc..u n s--zd vmv;8c0oxvw 0m0glv ) 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 a4 6v)mxjtdlf z51k r;l charge of 5.0 mC when it is placed in a uniform electric field. What is the magnilzt561xl;f)vdr4 j mk tude of this electric field?

  A particle with a charge o .m(1dg)g dnvm2 :bkhvf 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 field of 6000 N/ e,sii56zsxcmvm 1k),C pointing downwar i,c i1z)e,k5s6 smxmvd. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.1h6mhwx y. z-:j50 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity..x hj6hz ym-w: What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of852at7 kxl/emeo udjj-a04mk +2.0 mC. What is the magnitude of the e 0xe5tj-jlm a4auk7e ko/2d8mlectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 r40f6o5) nvqsusm s4ymC. What is the electric field 6.0 cm f su)s4ym qr50o4n6 sfvrom the center of the sphere?