State the law of conserz15y8ebb8g0 c d1vdigvation of electric charge.

  Is it possible for two newide+ql89 9 omww k480d gi6vzgative charges to attract each other?

  Is it possible for a positive and a negative charge to attra*7ugezyp0-*m u /wvaq ct each other?

  A glass rod is rubbed with a piece of silk. During the process the o 57 s;7bvvpunglass rod acquires a posi s7bv p7ou;n5vtive charge and the silk

  A proton carries a

  The model of the atom shows n(b0m2b (ysum+o -elra

  A neutral atom always o2d0*yr7aqcsdedy*u (pv m.+has

  An atom has more electr cmsyf1bi d.y b,+o 7qaz7.fd8ons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nucl0b,drmth 9h5b+q4c)cvk.u h jgx1 , pwei are referred t9 gkqr )hp+0hcc 1,xw d, jubmv.t4h5bo as

  Materials in which the electrons are bound agwutj(p:t d8.j e sp9g+x,.lcd v.-rvery loosely to the nuclei and can move about freely within the d pj- dc .vr8g.,use( w p:gx.+j9tlatmaterial are referred to as

  A negatively charged rod ij jwp*b 1+sax, )cc/)lyp xdk8z /c;ems brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod wpj)s8akbp/ ;*lzc +jy,dwcxm1exc )/ ill be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Thekffbp. g ubr bv.,)21ly are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which stl f.ub2,vb1g .r kfp)batement is correct?

  How can a negatively charged rod charge an electroscope positivelu8z-w ngj) f1ky?

  An originally neutral electroscope is briefly t 0;sjsb 6l1rgvouched with a positively charged glass 0;g6 rls1j bvsrod. The electroscope

  An originally neutral electroscope is groundediquisdch s-(u/*0gf.s f-r8u649i w 7clr pux briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electh9xr.iif (l u07g-i q6d*p-suc c /sufu8w4rsroscope

  A positive object touches a neutral electroscope, and the leajj 7c, d /9uwl md18nwsnz9aq8) n8vsdves separate. Then a n sj)dqn1/vwlm8z8d87,d w 9c9njs a nuegative 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.j72evtyxjbzoiv8j 62t:c9xb 7 o,lg2 A neutral 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 obit :j 2jg vc2x9zjotx62y lb8e7v7,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 constan* al- vdybav-+tor7 z1t $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger ;l.u2f+zeupv+e1o tw in magnitud2lo.z1fv +uutpe ;ew +e than the second charge.

  Sphere A carries a net cha:aaahvx-dlwvx5 9sm* c 1l1x:rge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes thewl:v1sl9h1 :xaac-*5a x vd xm electrostatic force between them?

  Two charged objects attract each othenr hx310kgr *sr with a certain force. If the charges on both objects are doubled with no change in separation, the force between themkn*rxs03 r gh1

  Two charges are separated by a distance d and exert mutu8zrtck y,h- w8ni4 awzzoynr 2)z*i(tb 3f:y-al attractive forces of F on each other. I 3no y*trywkf8ti-h z- z48czr)iwn z,y2b:(af the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to thja o7 f3lh+d/ce force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reducejlfc 3o+ahd/7 d to one-fourth its original value? The force is now equal to

  An electron and a proton are separfb* t1a+ qh9lrated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a secoah1 +f* lbq9rtnd electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 fazcj32)cd mn6g .-w jm. What happens to the magnitude of the force on the first electron if a secof6 mcjcnw da3j.)2zg -nd electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happ bfsxdz4o s:z 1p,7hg(1 w/poa/d mxm)ens to the size of the force on the proton if the electron is moved 0.50 m closer to the bxo1:)7 p/wxd p1/o 4, smzf(gza hmdsproton?

  A point charge of +Q is p3--l.0 g yllbf *hdoxtlaced at the 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 -obly.30gx *dlhlf t- 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 w80e,.*amwx z-z+6kycs a3mx lh3a vs. 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 z63k s-exyc3axha vz8.w*s m+l,m aw0the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vect0l hu xxq-t77p9/ yaygor?

  At twice the distance from a point n ;, nuqqmno//:es w.fcharge, the strength of the electric field

  Is it possible to have a zero el( 3 5lgf/dh u9qlez.tutfm( a2ectric field value between a negative and positive charge alfaf (um h9tz(e g.5/q t32udllong the line joining the two charges?

  Is it possible to have a zero electric field value between twoyt09pxb5h d y0fh.:dnok9e*g positive charges along the line joinheh ngy9* y00f 5o:.t9pbkxdding the two charges?

  Electric field lines n:8ec3)v66emv eey/oobhket 3ear psitive point charges

  The electric field s06 *y cgd3 elt2g8ywylhown

  Can electric field lines intersect in free spacevw65o+kt 55*h59ek3x g q,otu d cdxuh?

  A solid block of metal in electrostatic equilibrium is placed in a urrqk):2jx8m :7 5oh cfgjw5i bniform electric field. Give a statement concerning the electric fieldxh 2 jb8 m kqf7icw:5:ro)j5gr in the block's interior.

  If a solid metal sphere a z:jc5q+9 fjfrurvt1; nd a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surfactv95j;+zqj1frf:uc r e is

  A cubic block of aluminum rests on a wooden table in a regio1c khp;61zv9 ef qg(sln where a uniform electric field is directed straight upward. What can be sai1 pzl s;ghc 69evq1(fkd concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric fndl*p (pi6-u g kh/p2 4im/hucharge

  A positive point charge is enclosed l5gveba/qfk)7, 0wg2b8 pd poin a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow spherwdoglk 2v8 5fb/pbq0 g)e ,p7ae has

State three properties of conductors in static ezy 0n f(9mec;3(vegkcquilibrium.

State Gauss's law.

  The charge carried by one electron is z nulym/5ui5a w3,q0v 2,jtz g$e = -1.6 \times 10^{-19} \; C$. 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 promew565 mlvmy3: eeq+wtons than electrm qwle36: w5eyme5+ vmons does this piece of plastic have?

  What is the charge on a/oz y.y9(w2j8p -aaig,f tro 1 kg of protons?

  An atomic nucleus has a charge:p5xjm 4wry: e6oj hx9*ndh d9 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 -+wm :b/ie:pxo((c cjx4.0 mC, re /jwix:(m+: p(c bcxeospectively. 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 between th(n: wyjed/n-q;ca9 slem is 1.0 N. What is the magnitu j(c/slen-;d9wy : anqde of the second charge?

  Two 1.0-C charges have a force between the+p lnu+-ut -gkm of 1.0 N. How far apart are they?

  The force between a 8wiki: c1 b0oocobw02wczg32 3 qnhu,$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm aplicx3ap: /8 p75te6 weuw 0igbart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electricia50p ge:p 7/3itlw cbx we68u force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chko4ieh:un 4hw :fq73y arge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. We: hwf4oi4qk3n: hy 7uhat 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- swi1j.wlxa29axis. 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 1wij l.was29 x100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are t if2 p 2hz*a3b9f5hzrlocated at the following positions: Q1 = 2.00 mC at x = 1.ip5z*h9tfb3 2 hzfr 2a00 m; 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 poi +u-*h42b b7 yqykirj1vnyu0k nt charge of -Q is placed at the upper-left corner. It i * yu4jb-ykhv+q ir071nkbu y2s 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0n t3zy5 cazvzhbt 6vbw 7xd0g3l)4.;u); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). W;t3)z6 7b yh3dv5 z04nuxatw bvzc g.lhat 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 (0, 0.10 m); Q3 = 5.0gjpy)u215t ve2. giqp nC is at (0, 0). 2p1 ie2qyg5gt u .vjp) What is the direction of the net force on the 5.0 nC charge?

  Three identical chargg v7q0br9q9m:c 4 kzrges of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is qq zrvm bgc9:974grk0the 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. At whaxs;gmt 3gmk4-t point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force actimsk- xt ;g43gmng on it would be zero?

  A +3.0-C charge is at the origin a)u)n:dm i8t/zfl q;qend a +9.0-C charge is at x = 4.0 m. Where on the x-axis can/)):qzt8el fq; iumdn 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 = 2asyk 95f9 wd/nod/hdfn1 ) hywr) u7(og. Where can a third posithgfdh)9k7do5f)/d u/ w y9n now s(r1yive charge +q be placed so that the force on it is zero?

  A copper penny has a mass uj6:(wp 8iko g5h.q niud(je7of 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 attraction of a f p1p0.b yrir/kw+vat6wswg4:ixed proton some distance above it. How far. 6 04wr+barvtsiky:w/p1gpw above the electron is the proton?

  Two 0.20-g metal spheres are hung froms)u0n ,ge1rbdk) 3bik a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the anglen, ))1bis kdb0gre ku3 between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. Wh 8p i7:eiqg0yfat is the magnitude of the electric field at a distance of 1.0 iq 0ef87piy:g m from the nucleus?

  What are the magnitude and direction of the electricutb y(j04lzsjf ;lb*3 g8n0es field at a distance of 1.50 m from a 50.0-nC charg0nt*blzsy8;l( feg jsub34 0je?

  A 5.0-C charge is 10 m from a s-f9cu/mgx q.hnlkh 6 z,)c.gkmall test charge. What is the magnitude of the elecxhz.u.f/- k)cqn9g6 khmg cl,tric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is th cunp+a: qs8f;e direction of the electr:c8qfap nu s;+ic field?

  A 5.0-C charge is 10 m from a smallufway85 (mrax b 9uv79 test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the rf8x7( ba59wa uumy9 vtest charge?

  Two point charges eachx( f4h h0oa2 ,5kgtpbn have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at 2n(g5th04, pkoxf baha point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cin 0m+e :f 96kwvs2gd)t*6 n;okpsrrnm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electrf )9sng mp 2i ;0o6t +:6sn*kwekvrdnric 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 m 5exdxu77eq+ mC charge is placed at the 5mex 7 qe7+5uxd0 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and6(xkzz; .huhusxu x92 -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point ux.z k6huzh2u;s( x9xmidway between them?

  Three 3.0 mC charges are at the three corneee)ohs( 4w5)t ws *nrqrs of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of (q sswn)5e)torhwe4*the square.

  Consider a square which is 1.0 m on a side. Charges are placed at thema9z ex-5vzx/n 8sz cbt)1 a7i corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 5 1)9-ibaztn8z/xaz emv xs 7c0); -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 placed in a uniform f5 y w0lay+4xoelectric field. What is the magnitude of this elecoxa0 5yf4+ ylwtric field?

  A particle with a charge of 4.0 ci) 9bw/xekn3mC 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 lb;a.s-insx aqe *92 van electric field of 6000 N/C pointing downward. What charge must ais *9anv2.;sbeqx-l be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries3 v:3vrwo pl:p a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electriclpr3 v:vp o:w3 field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is lhdrx0ncd1 -6 x(/; avjnu5ou0ka q4xthe magnitude of the ele n1uh/uc ad54(a-o;x06 qvjk lrx xdn0ctric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elect -nkxraz ,cx:pb:m;i ,*xb2stric field 6.0 cm from the center of the sphere,2 n* b:,xkm-azbxsp itx: rc;?