State the law of conservation of electricdz ,ot vft)4vyona7 (( charge.

  Is it possible for two negative charges t9mwthf hrh x)3r 7l4rzki51+yo attract each other?

  Is it possible for a positive and1bl-8rqi+bbq oe -izvu a*1(k a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod ac .f+pk58f3xa,uttar j quires a positive charge and the f,ra+38uj kptt x. 5afsilk

  A proton carries a

  The model of the atoga tleg1 +2tc1m shows a

  A neutral atom always ,9ahr .(ryzox t))l-qpo2bvrhas

  An atom has more electrons than protons. The ag:pk1m9 2na- xpcdy e) +ncwg8tom is

  Materials in which the electrons are bound very tightly to tfrzzs96 ,;ge e)44dxplvz ,1 tgg)fthhe nuclei are referre tg9,1 ;gl r,xetz4e6p)zg)4fvzf hs dd to as

  Materials in which th fa+*4rd gu3/)cktjwwe electrons are bound very loosely to the nuclei and can move about frt34 wcjrw+)gd*a kf /ueely within the material are referred to as

  A negatively charged rod is brought near on g,k((niiz:cou jtq/9+ zlh; xe end of an uncharged metal bar. The end of the metal bar farthesg+onj;tkzq (:x/ l(c uhi9,zit from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neuh st)st pn7-6mtral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that iss7ps-6) tmtnh grounded. Which statement is correct?

  How can a negatively charged rod charge an ele)8x d ikmzt30ectroscope positively?

  An originally neutral el2/osdxowih5r3 mh8 wg o5p-8pectroscope is briefly touched with a positively charged glass 5h3o5phms8/w-oido2gr w8x p rod. The electroscope

  An originally neutral electroscope is groundm;j(tko *xc/j w,.hqo0 tgnz2 ed briefly while a positively charged glass rod is held near it. After the glass rod is removed, the ecmnxtjq o*zwkg.h o,t0( j/; 2lectroscope

  A positive object touches a neutral electroscope, and the leave.(uqg p3t vm2ds separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to ( mud2gq3vpt.the leaves?

  A large negatively charged object is pla gkw+fr- fw ,ca/wv7m*vw;i+ q/vq.ltced on an insulated table. A neutral metallic ball rolls straight toward the object, b vtqkfwvwq g/wa*7 +,v- fw; +.cmrli/ut 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 final charge on each ball?

  Charge is

  What are the units of the Couloms.75*b sg6awgiei 1gp s.)xpd b constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is tp+ksnd5 ;6valarger in magnitude snd+6v5pt; akthan the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nearz0q1hd a p8lb.df+k;t each other on an insulated table. Which statement best describe bk.taf ; +hlp1zd8qd0s the electrostatic force between them?

  Two charged objects attract each other wi*g:iw ho d7a7ith a certain force. If the charges on botd iagwioh*77:h objects are doubled with no change in separation, the force between them

  Two charges are separate2wowt0kv h+i lg+ .g )cocv*p:d by a distance d and exert mutual attractive forces of F on eachv.l*cik++ t:2cp)ohw g0ogw v other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with f-gpf)b4a 8p-cihjj ;a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and thpg) 4faf- jjc8;pi -bhe separation 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 a distance of 1.0 m. What happenq553rgf3p v efs to the magnitude of the for5frf v3g3pe5qce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of ta70oscf,m .d 1.0 m. What happens to the magnitude o0am,s.d f7c tof the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton aydy9)drg5s9 rjot 1s 6dm*m0z ocvko( ;i+wt8re separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is *(s)s9 v5tm0yw86drg dmz; j irk+9tdyc1o oo moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a z f mo--hoc9pm*bkc6c +ho12bsecond 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 of6bozkh-bc 2+o hc *-f19opcmm 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 the centroid of an e8 k-e 7hl(al2o5ouyvi vo bg:+quilateral 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 plac5 lo:uovobg l+8k-(7i vyae2hed at one of the other vertices?

  Which of the following is not a vectorf(*zlh v8nz z axk;wi77n,ng/?

  At twice the distance from a point charge, the strength of the e/ rmz l) yowlz3fc:o0pv,756fd3dn bvlectric field

  Is it possible to have a zero electrb738zg d gx(.dervytz99k,a lic field value between a negative and positive char tg 3(zdkaxg9ye. bdl78 vr9,zge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positive cqr)a7sgo9,e 1 y 0yjg3as5sheharges along the line joining the two charges?ssjr y9q5s0a7oey 1,g a)eg3h

  Electric field lines near psitive point ci u6 nn4r7ia-vf*yd u;harges

  The electric field shown u e5bl4fup echd (3 k-,ewy4bw) g6w5v

  Can electric field lines intersect in frnan*/ b3i;r6z wt* b;lgr.s cvee space?

  A solid block of metal in electrostatic e* +wss9t 9uataquilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interior9t 9ws+ts *aau.

  If a solid metal sphere and a hollow metal sphere of equal diay1/ klq z2y*imns)-gameters are each given the same charge, the electric field (E) midway 2y/-l*) kmzasiyn1 gq between the center and the surface is

  A cubic block of aluminum rests o 93f,hkpro0p16i1 rivajyia9c*gjf/n a wooden table in a region where a uniform electric field is directed straight upward f 1k3 j jip 60ropirv/icah*f1y9ga9,. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibra9:,cyci.k):trp f ldium near an electric charge

  A positive point charge is3l62 x-j ib*8sezfr*md vqu*e enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the s-uif dq x* *ebze832l6 rmjv*electric field at a point directly above the hollow sphere has

State three properties of conductors nt:u39)a 9f i5b kuzsuin static equilibrium.

State Gauss's law.

  The charge carried by one ty4xd-xd mm)hxyfyziy70+u 9* ; bk ;velectron 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 thant*4 ey38b dyu c6hg4qx electrons does this piecd8bg*4 6y 3uxqtehy4ce of plastic have?

  What is the charge on 1 kg of p*pb8k;qgzhftor 7- -rrotons?

  An atomic nucleus hauu;s 412hibcxiu z6y-6z,m1d sbg)acs a 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 charge values of 2d 6q6jwu1l -dfe8:pk7 ,ap a.eb7nlox .0 and -4.0 mC, respectively. What is the magnitude of the electric forcuxe-bw.dq8dj1l 7lpkp :o6anf,67a e e between them?

  A 1.0-C charge is 15 m from a second charge, and the force0g ov/u.bcg +r between them is 1.0 N. What is the magnitude of the secg0v bcgr.uo/+ ond charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far aao k6ic5u;h b8n 5(icoda7 k)bpart are they?

  The force between a ex86 6qp2n:;q* wddalx ) hsf /vzyje4$30 \; mC$ 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 they azz x(a jn 1h-ji:*g.pfq;7qgxre moved to (7 -1;qzjpf n.g qaxxh:*gizja new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chagdl6mixop+1us+; cy 6v4k s-nrge is at the origin, the second to the right at x = 50;y sngdmv6k+ -o+ uxi16 slpc4 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 are placed on the x-axis. A charge of +2.0 mC is pladzr 8 x7n2h/oolbov2;ced at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm 2b nvo8oz 2/ld7or;xhmark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are1 std.3 pdt/q2hc rhgpi.;ml+l,ng3a 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 magni; t/ .ts2h+ihlg d3rqp,gp.malnc d3 1tude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of aa /paa7rn45fk aur8s0fyq6 7t 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 acts on the positive charge at the centt sp kafar 7a/r5y60qf84u7naer. 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); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is 6wu+tsn. dj ( nou5pe4 ;ho1wxat (0, 0). What is the magnitude of the net force on the 5.0 nC charp5du ns.t hxjwe 4w n+6ou1(o;ge?

  Q1 = 6.0 nC is at (0.30 m, 0);; yvnduk95*keq6zj5u u)bhkv)n4 (a. e zvp5 p 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 onqpv))b54huzy(6 5j zv eendup 9kk*aukv5;.n the 5.0 nC charge?

  Three identical charges of 3.0 mC are place3;nqy ij gh*w*d at the vertices of an equilateral ti3 ;hnw*yjg q*riangle which measures 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.fxg2 ,- v r2wvg*wrj4c0 m. At what point, on a lwr2 42v *-,rgjcfvgw xine between 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 origiz14z l)(zik .r, .gea9nusfze n and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is ze,z1.s.uz9 irzenk(z4l)gfe aro?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where cac teseykgbf88;9 (ex 2n a third positive charge +q be placed so that the force on it is zygx s8b(k ee9f82e ;ctero?

  A copper penny has a mayaa:f4: 9b :wstf/z(j/f (bwxp )yogass 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 by the ofy/lb-m/p.inph t- */jy0) eyw n3uy8e0vqy attraction of a fixed proton some distance above it. How f/p .pyt-byu3l/yonw *j yne)/-vy0em8ih 0qfar above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductihshl6eo7 tog p31et90ng threads which are 30 cm long. Both are given identical charges, and the electrostatic 3opgt 76t leh091ohserepulsion forces them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus haz*wz+m ; fhon0s a charge of +40e. What is the magnitude of the electric field at a distance ofw nfzm*0;ho+z 1.0 m from the nucleus?

  What are the magnitude and za47kt/dyjv6xn 2a/pdirection of the electric field at a distance of 1.50 m from a 50.0-nC charg j anzp4/y kx/t2vad76e?

  A 5.0-C charge is 10 m from a small test charge. What is ts/vpbw7 o/rp7:y d x;yhe magnitude of the electric fieldxb/:ypsw;rd y pv7/o 7 at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the di;d0 7wcnn /u4j3xsjmgrection of the electric fmguscnw; d7jjn4/0x 3ield?

  A 5.0-C charge is 10 m from a small7g kv9c6a+h;s bk9ghe+h f8abtq9 :-m cc.cw c test charge. What is the magnitude of the force experienced by a 1.0 nC chargwcgh 9s ckmc;6bth+qeb+9kvfacga 7. -: 9 h8ce placed at the location of the test charge?

  Two point charges eachg f7j;0 pvdu1*zz: ldm have a value of 3.0 C and are separated by a distance of 4.0 m. What impjd 70 z;fzl*d gu:1vs the electric field at a point midway between the two charges?

  A 5.0-mC charge is placgz yemyrwx 9m-(efn j8i9o8(3qz1 eo9ed at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the eleziz(8 9jnqy wo f-1mex y89o e(g93rmectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a )nd p2zcovu)sw(v e /*-4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is t(v)d/zcn euo *w2 p)vshe electric field zero?

  Two point charges of +3.0 mC and -7.+ vzss7(h08o.s8ylbp9 f qwjl0 mC are placed at x = 0 and x = 0.20 m. What is the magnitudewh7+pq(ssz8 oyls0b.jv9l 8f of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three cornm1t9 wkhkkfv95b zv932+tdfx 4b c q;aers of a square of side 0.50 m. The last bm dw2fhkc9vkfa k ;5qz94bxv 19 +t3tcorner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which iswetf,(q7hvz ,(1vp:t0w lj*xbh- npo 1.0 m on a side. Charges are placed at the corners of t-zppwt (wxb:h 0,e1 j,l*v7fhv(oqtnhe 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). 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 mC when it is placed90is + w jiwh2yn5tool un8k65 in a uniform electric field. What is the magnitude of this 2 9ok suyo ii6n8wt5jh+n50lwelectric field?

  A particle with a charge of 4.0 mC has a mass of kjewemki-oo8,g wm1e a1l1 h;; 3+e .hnd4pmi$5.0 \times 10^{-3} \; kg$. 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 60jda70vdd97cx6 1izyzg k6ns -00 N/C pointing downwads x6y7-i1gn z9 jzkc0d7da6 vrd. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries aa: qt5j 2)i1ia4r9loei d xe2j )cgiu( charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gri c: )tga5q2ueeo92r1ijd)4ix( ail javity. What are the magnitude and direction of the electric field?

  A metal sphere of radiusr )ct d4ig--hb,oopj2 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm b h odt)o,gc 42j-i-prfrom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whaz70xm n7 g );t.hx z1wa:x0yfdkc/ouel -4vjwt is the electric fie;c.ky 4-g vmh7xux l01eojt n7wz/fd:za)w0x ld 6.0 cm from the center of the sphere?