State the law of conservation of 7wwe3hu)hdrbka z-aw 18c: :nelectric charge.

  Is it possible for two negative cqmss0 -ttfz2db*3ga u y(pg/ jr51x: charges to attract each other?

  Is it possible for a 0xegz3qm3u51 +fyhh apositive and a negative charge to attract each other?

  A glass rod is rubbed we cjghg:1bs(:f 9l4bhtw2r1b-et (ak ith a piece of silk. During the process the glass rod acquires a positive charge and th 4r(he h lbg :bg(1beas:9-wjft12tkce silk

  A proton carries a

  The model of the atom showpg1s7mf b u e,8u9yx:gs a

  A neutral atom always has29aote,0vl1pt/ gxx +:f op on

  An atom has more electror0oo 1 qbw4/vmgv7ue :ns than protons. The atom is

  Materials in which the electrons are bound verkrm9aqq;l4c;gcp5 q7gv :f u3p i* v6qy tightly to the nuclei are referred c5q :v4 avq3u;k9*pmirgpq;7f6q gcl to as

  Materials in which the electrons are bound very loosely to the nucl-e 2uw* hwbg0+h c;beqfp+1enei and can move about freely fbquh e;c n+bhww0+p1- 2eg*ewithin the material are referred to as

  A negatively charged rod is z-y1: c0 uepq*5ok2) io jauedbrought near one end of an uncharged metal bar. The end of the metal bar farthest from theud *oui)5p :2 q0ykoceaz1je- charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neuyg4( z8p) rmehtral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is corzy4e )(p rmh8grect?

  How can a negatively charged5c*qpxpa).xg1 secr4 rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chagh o22; /g;wzlj3w-nttj7zgv rged glasht2wov gtgn;w7j2/;lzz jg3-s rod. The electroscope

  An originally neutral electroscope is grounder8lq4av ,b/g; 5qd1 /atvu omzd briefly while a positively charged glass rod is held near it. After the glass rod is removed, the elect4/8u q 15l/qvzg;bvoaad, tmrroscope

  A positive object touches a neutral electroscope, and the leaves sepat7 aaok67q bcge89. fwrate. Then a negative object it7cwogf.kb7 aaqe 968s brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on 3werl16 (x :)i8aupxip/qp fvrsk /.uan insulated table. A neutral metallic ball rolls straight toward the object, but sto)(k . x:vpp/3xlru 6ruea/wf1sqp8i i ps 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 +9di:vw+w vomte1a ; gCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. T;k 8azudehtpi 9 ,2u 9rq2z hg.xju.k-he first charge is larger in magnitude than 8d;htjeq2upz-zr.xkuh. 99,gku 2ai the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed .r ydwgsei5s3ug(s 5)near each other on an insulated table. Which statement best describes the (ie 3g 5sdrsu)5y.gwselectrostatic force between them?

  Two charged objects attrrjq:t3d1hi9 tj 5qnhm)trvxl (36 er 9act each other with a certain force. If the charges on both objects are doubled with no change in separation, the force betv(jm)j tdh91 6:e953tx3qq n tihr rlrween them

  Two charges are separated by a distance d and exert mutual attractivk+ /l)l) 8hbluwbil5ue forces of F on each other. If the chargeslh+))i8ll 5bu l w/ukb are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a frg8js-t :hy f*r9lji;n1nck 7orce F. What happens to the force betwe n*8tcyj; 9rr7hsj -ngk:1lf ien them if one charge is doubled, the other charge is tripled, and the 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 happen: dwwd-(wqjp7yg vx 1h y(:u7ts to the magniv-:ywhwu jq yt(p:d1xd(g 77w tude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a prqrqlw* y3.;ox rvmqk .v-(+nv oton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron islxq .-3;vwvvrryqnk*mq (+ o. placed next to the proton?

  An electron and a proton ai a :n3na;pvf,a4e.e9)nr mftre separated by a distance of 1.0 m. What happens to the size of the force on the proton if the ela. ,tn me3f)eap4n:vir ;fan9ectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the centvkaih 1*w,z. 1wlfvu :er 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 tazu.i vw*f,hv1 1k lw:he 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 the centroid of an equilateral triangle. Whwm*lq bf55 :maen 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 cmmwlq5bf: a5* harge of +Q placed at one of the other vertices?

  Which of the followin;wy k,aj6 tvs* yuz3i5)hwqj,g is not a vector?

  At twice the distance from a point d23f uoju k406fu(vgecharge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative a)but s/1y/ rynnd positivuty/ny/r 1bs) e charge along the line joining the two charges?

  Is it possible to have a acyg t 6gs),usyp5/5/i-dyxjzero electric field value between two positive charges along the line joining the two chasjydi )5y/ gc/a ypg6s5ux-,trges?

  Electric field lines near psitive point9w 0 xw/rul4g/;kiclkp 25sve charges

  The electric field shownbopy * bn;ivl2r 8+*+g( vicyv

  Can electric field lines intersec;gm,/ zb-h zhqt in free space?

  A solid block of metal in electrostatic equilibrium is placeduu(uvop 1rb*dcu e0-;syh5b( in a uniform electric field.uys* uub;vohp-c 1(0bred (u 5 Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere anzju5i( el8 9ryd a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the centej r8(95 eluzyir and the surface is

  A cubic block of aluminum rests on a wooden table infi(lz c3;w gv, a region where a uniform electric field is directed straight upwarwi3,( lvc ;gfzd. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium nea;4u;3vxi u es2qnw)n 7bme;qxr an electric charge

  A positive point charge pfipll 6zuv: eew4o fe6f 6-((is enclosed in a hollow metallic sphere that is grounded. As compared to the case wite6wf( eff6pill(voe u : 6pz4-hout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties oe5g/oswzx1 )t8hktoq co0 ew++v- c3nf conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electrc1,; lbrt v2mhon 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 c z)1n+ltv:x shtd)r6 of +2.00 mC. How many more protons than electrons does this piece of plastit :dnsht+6x) vc)rlz1 c have?

  What is the charge onv-* r-ll: dlqrpdi+x8 1 kg of protons?

  An atomic nucleus has a chargbwfg/ pi 12y,n32 cezre 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 2.0 and -4.0 mC, r md:2nga +,hj ijfx31hespectively. What is the magnitude of haxh fjgm12,in+ 3j:dthe electric force between them?

  A 1.0-C charge is 15 m from a second charge, and0-m sesht ,ksp-iyiw++3iw gj9dt a73 the force between them is 1.0 N. What iw9wd0spsgeiy 7 mha 3+ts+,i3t -kji-s the magnitude of the second charge?

  Two 1.0-C charges havi-gd3hk 5 1s)rchtfyt ))5kuye a force between them of 1.0 N. How far apart are they?

  The force between a iq namq( p6:us8vo.1b:5 psjm$30 \; mC$ 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. h 6q9n)qir b/rk s,*i0w qciur(,(kid0-N force. If they are moved to a new separation bwhii,q ru()dqs9,ikk *(6cn r/r qi0 of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC arq h 8y r9yo7-bbv+f(nae 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 q8+y 7vah9rb -o( byfnelectrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axnf*intpu2 -02syuup2is. 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 ar-2p2pu fsn 2 tyiu*un0e the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following6pjn-m p yb0fkem1( *w positions: Q1 = 2.00 mC at x = 1.00 (y mj n*6w1epfb0-pmkm; Q2 = 3.00 mC at 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, and a second pmeunv34 ;h w4yn ;weq7oint 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 cwnv qn7 ew yue43;;hm4harge 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 aec1w4*divok*i bmrpjh o32 ,o87f:fnC is at (0, 0). What is the magnitude of the net force oo:7vio,wb8hojkae ff p*m*i c32 dr41 n 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 = 5.0 nC is at(q)t+;waiq:u4kth vw2sz w n5 (0, 0). What is the direction of the net force on the 5.0 nC chsw 5i2ht(;u va4 q)w+nwk: tzqarge?

  Three identical charges of 3.0 mC are placed at the vertices of an equ2aet oh4n,mp+ ilateral triangle which measures 32ha4o+pn ,m te0 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. A /dijm8d4ako o/z3 :tgt 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 /3 g8:dj tda/ozm4oki on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at 1r:w+3k.cuo yti dwp- x = 4.0 m. Where on the x-a 3ir:kwyu.p o+ dc-t1wxis 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 = 2anwmt2*z2(;)fv 3o +obxgb.) :h rajj+yhx wfx. Where can a third oo(r+3yv*twxabhb n.g)+fj;2f x wzh:)2 m jxpositive charge +q be placed so that the force on it is zero?

  A copper penny has a mass 6k( 8s *qs vtq-)cn;2i afth5yjpkav) 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 theelpe v4 :.))k8oybydzm f1l5o force of gravity by the attraction of a fixed proton some distance above it. How far above the e mkzp) 5f8ly)v: o eeydb.l1o4lectron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductingl6 c.e:hi nqecd0 *zru;y7 ,sq threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the aqe,z6 7;qs *d c.y: 0inrheculngle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the4lidkof3 ,xj i1hr7i3i2tyzcy +3 1ce magnitude of the electric field akt,ijyi2i rcx47h cz1f l3i1o+3 3 eydt a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field atm6wj0c .vc m-n a distance of 1.50 m from a 50.0-nC -0wjv.mm n c6c charge?

  A 5.0-C charge is 10 m qu8(wbvvv( 1yefu08p from a small test charge. What is the magnitude of the electric field at the location of the test chevy(b 8u 018pw (qvfuvarge?

  A 5.0-C charge is 10 m from)e* ywywj vwv7hj7*jc.ah4q c*9 z2n u a small test charge. What is the direction of the el7*hjw zw.qeh* 4 7vvy9jnw)c*aj2ycuectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitugx u .9rx8ridy*gmh. :de of the force experiencexhd9 :g8 xr.gy.u mri*d 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 al 7qrb5in py20nd are separated by a distance of 4.0 m. What is the electric field at a point5i lbq r720pyn midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC char/p;jk,d-7e gywu ih r5ge is jug7 y;i,d5wrh/k e-p placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 1x)h x 6 v.;j)azsndnm0 cm mark of a meter stick and a -4.0 mC chargev.xx)nhj d;an z)1s m6 is placed at the 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 -7u-.nsdu:beut -l0eqezpe7m 5p e91)z.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point misupu1et u-:) m9d enbee 7zqz el05.p-dway between them?

  Three 3.0 mC charges are at the three corn-c7zt f7me5rfv2 v0n,7 7ve/ufi lfhl ers of a square of side 0.50 m. The last corner is occupied by a -3.0 mC c7 v2ln,f7l/v c 5rf-emhve7 tuf0z7i fharge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m od-,qwga , a4ugcr tb45n a side. Charges are placed at the corners of the squardq c54a,g, 4t bg-urawe 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 s o vit*+z ix4cul5jz+b1 p5/r5.0 mC when it is placed in a uniform electric field. What is/5+ tzx5*iijublcs +z4 rp1 vo the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of6gl l :xrhat2 j;ck-*d $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of masz99 f wqz/z-jus 0.120 g is placed in an electric field of 6000 N/C pointing downward. What chazz/qj9wzfu - 9rge 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 placed 7xry52)abl zp3zl :vsl 7f4re+hvuc 6t: x5kkinside a uniform electric fiel5vtyhlv c:2kx)4fkr+bu: rzl35pazs7 67 x eld, 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 of9-1e ,v 0)j*h )b; lgknjfwtjqz1h+e p/epkox +2.0 mC. What is the magnitude of the electric field 5.0 cm f k*0+1); hvw/f)npoj g htxe,ej jq lpz1ke-b9rom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge twjjjz/;.b y5 of 3.0 mC. What is the electric field 6.0 cm from the centerjy./5jz;w t bj of the sphere?