State the law of conservation of elemb3 ijuw8fez0cv(s0k,ty89 n e6/ wilctric charge.

  Is it possible for tzcyqc(e on36uk91ko m 2on v37wo negative charges to attract each other?

  Is it possible for a positive and a negative charge to attract eaqd oj4obq.g .x)aj g:ug9llq 27ld26ach other?

  A glass rod is rubbed with a piece of silk. During tt55+r, 2qn0 iwiz:fxk2 iopr ood3sc8he process the glass rod acquires a positive cha5r +q rp i,0cxs:2 of kznio3wd2to5i8rge and the silk

  A proton carries a

  The model of the atom sh .olyfx*p5gp.9. es-dkw g((oc -smrpows a

  A neutral atom always ha-pzt)vp 1zvg h tnxp2k8;8 us;s

  An atom has more electrons than pr(em m0mwk3dz1l49 t io1iokg(otons. The atom is

  Materials in which the electrons are bound ve;8lvo jhpgo 8pwpr3- k dwy7 52mnq2m3ry tightly to the nuclei are referred to ay8 mom32l5gh oj7qpd8rn3-2;kvwpw ps

  Materials in which the z 43w h-;agzmyelectrons are bound very loosely to the nuclei and can move about freely within the material are3zzy4; w m-agh referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar xm/s/iu uheu+o /m3*r. The end of the metal bar farthest from the charged rod will beumo/*uhxium // e 3s+r charged

  Sphere A carries a net positive charge, a,6ic0tchv, 2 iaoicp(nd sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly iihvic o2c 6(p at,c,0touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope p:1s6,uwpaqexv+ -man ositively?

  An originally neutral electroscope is briefly touched wi baigmx35/xa5th a positively charged glass rod. The e5gi/x3mbax5 alectroscope

  An originally neutral electroscope is grounded ku1c23 0rzl+ot)1ft ng3kw kebriefly while a positively charged glass rod is held near it. After the glan) l k32cu+rt1efk 30gtkz1owss rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate5ynbe g,+e:9dj y5cbd. Then a negativ ,5 njcdyge9:5 e+bdbye 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 inun ac9k/9 q3 edst7:j uib8oop/bpxl r:9 y2k.sulated table. 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 the negative object. At no time does either ball touch the negative objeqoka dlcksnot/ui2x7:y99/9bej8 bup3:r p .ct. What is the final charge on each ball?

  Charge is

  What are the units of the Coulom xsn9s(,8z y82k iiaszb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dank) 3;iwzk9oistance d. The first charge is larger in magnitude than the second chara3 i) kno;kz9wge.

  Sphere A carries a net charge and sphe47o ne0 /2s+bzqp s xdprx vv2x,w5b-ore B is neutral. They are placed near each other o7ox-e r vxo0w/xbsq5nbd+,2pp 2svz4 n an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other withjt,bxyn -sp g,,81lew a certain force. If the charges on both objects are doubled with no change in separation, the force,,ps,lgx yet -1w8bjn between them

  Two charges are sepa ci*8xl /ghocw6/*xlarated by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d ox*glc8*l/ c 6/awihx/3, what are the new mutual forces?

  Two charged objects attract each other aby fb(r /8+rbwith a force F. What happens to the force ba8rbrb y /fb(+etween 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 dist7 me oi*zh )z;pjo:ivq2t+wm(ance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the(vp2i w: ohq*i ;t+)e7zmj zom first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens t+bqmi7, po, nr 1jb8axo the magnitude of the force on the first electron if a second electron is o,1q brj, b a8mn7xi+pplaced next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whzk o1qq yrgppfwg w. *du01)r4l;yb)y;x/z5 lat happens to the size of the 1l fkw;p5.y;)g0qd ybzxrrl1 w 4*ugo q/z)py force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second l+h t 8gyg )ngj7.qet*cs4xw*x6a :o rpoint charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of n8g *grt hlxyes)+.x to:674 jgwqc*a2.0 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 square?

  A point charge of +Q is placed ata9w.z8px6ice mdz c50q ij17f 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 force that acts on the center charge due to a third cz 78m iq60 jcx.wp zic91aefd5harge of +Q placed at one of the other vertices?

  Which of the following is not a vectort2ax4q-r)nsryh d /5p?

  At twice the distance from a point charge, the strength of,9aqfrb3k7u gx,f (ft the electric field

  Is it possible to have a zero e 29qa; d+kshsslectric field value between a negative and positive charge along the sa92 khs;+ sdqline joining the two charges?

  Is it possible to have a zero elecia)pmsj yu.i uqz6h ,/(9c9xytric field value between two positive charges alongyzam csp( 9yi6x, j9iqh/u). u the line joining the two charges?

  Electric field lines near psitive point ch3rvofu wg84)z ofo+ w5arges

  The electric field shown dv:z wp8i 1z38ohg+ uedy l(-h

  Can electric field lines intersect in free spa) uefqwxght.o;b 2 h.,ce?

  A solid block of metal indb62si ff:rc*b a.q3n /p3ddb electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric fiel:d bsdd.a3*c ir qfb36/bn2pfd in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamed(+(q : m qlsqqp6uyv8ters are each given the same charge, the electric field (E) midway between the cent( qq+pq:8(u dyql6m vser and the surface is

  A cubic block of aluminum rests on i7- qo(g /ced89 o)q82cl ziswzq9 rjha wooden table in a region where a uniform electric field is directed straight upward. What can be sais-wio )rgqdehq9 8 (jlzi z8/c72 qc9od concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electr)e fq( pin kglm625x-qic charge

  A positive point charge is enclosed in a d*(pb k;ia ,,l e;grgahollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a poi;kal ggdp (r *,;be,iant directly above the hollow sphere has

State three properties of conductors in static eq) 2a 3syfvsx,nz6i rw;uilibrium.

State Gauss's law.

  The charge carried by one electron h461v:vlfcd pis $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic h i (7w0ilcpa,jas a net charge of +2.00 mC. How many more protons than electrons does this piece of plas,cii 7 j(pal0wtic have?

  What is the charge on 1 kg of protonc8 top;xb08.3g2 phsuw 4cd zks?

  An atomic nucleus has 8qt :/o( i*rgdg8sv ica charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separate1f ru5 kn-2 k3p*(8bp*n0kmu oukznadd by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forc3u(- ou ukfk2*dkn np mr8z1b0p ak5n*e between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them vr6 5 -: wtm8p z bdyh6an60mx c;wmmfub)c1m8is 1.0 N. What is the magnitude of the seco ap6bd;ftvmh8bc :zwm5nyrxm ) m-1m 0 cwu686nd charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?n 7ojg cpf5,sav.c (k7

  The force between a t2 +xc)2(egzu+u ohjp$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienca:gboa-4 fg j1hlkdeu :8y.m+ e a 1.0-N force. If they are mo-aagm dl.k b4yo8 1:fju+:ehgved to a 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. Th,k vff1avz76m l4xk zp; 50bjpe 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 elz x4pv6;p fbjm v ,z50ka71flkectrostatic force which acts on the charge at the origin?

  Three point charges are place5pafo1.n yo, fqv2q3 yiyb.t2d on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at pnq2 o3 fa5fo y,vb.1 yy2tq.ix = 50 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 located at theuirix)f 1rr;q -,i bl6 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 r- ;)u1 ,qfiixrbirl6 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 /jgokn7(b6bs 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 ak/ ongs7(bbj6 cts 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, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC y6 dht1q +wh03rz r6nzh82zlr is at (0, 0). W l+ 61r nzyzhh6rq8twr2 30hzdhat is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0)rpp;ke8q d1 y57xq5gmo*yme8; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direck*ypo m5peqegqx d1y 7m5 8r8;tion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed atpp enl 1u10/ibbju- w9 the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic /i pwp19ej b 0ulnub1-force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what poi1+)zv *j7xf mxaltzq3 nt, on a line between the f jq1zv)73xtz+lamx* 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 at x = 4.0 m.h2na p4b 0xgs. Where on the x-axg.0b 2snxhap 4is can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the oi a,n c.)x0dvrgx1: rvrigin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is z d a:i)gc1xrvvn,rx .0ero?

  A copper penny has a massz;i pc; v;d pxgka n.7v91u5cg 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 tjf71 d6gxqa mqvz9,..-nxab jhe force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the pro-b6x af.aqx 71dqm9vj.gnj,zton?

  Two 0.20-g metal spheres are hung from ,tu )t+ p/jtd7lzz 3vdfat13c 4;qmcpa common point by nonconducting threads which are 30 cm long. Bqc7v;3lp3fd a m4j,t d1tp/ctu )zzt+ oth are given identical charges, and the electrostatic repulsion 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. o j4 u .- nfb9tutfm9:e.yd;lv5ykni: What is the magnitude of the electric field a 4bln5v .muuf tf:e9dkoj.9y inty;-:t a distance of 1.0 m from the nucleus?

  What are the magnitude anxw(b k o7u1bk7d direction of the electric field at a distance of 1.50xko(wbuk7 b71 m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the mat-vwwhnm:;55c d 7qovgnitude of the electric field at the locatwwqv5th ;5:-n7mdvc oion of the test charge?

  A 5.0-C charge is 10 m from a small testj-cv3te-u;f 4i+ kvu w70qbf e charge. What is the direction of the elue3;4+0t-efv u bv f jcwq-7kiectric field?

  A 5.0-C charge is 10 m from a small test ch52iiai2ogqlnu 7ft ))arge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test)fi 2 itiguq7 nl5o)2a charge?

  Two point charges each have a value of 3.0 C and are separated by a d*dc qa( cuppwn j zxc+ .;ag8.wss,/k4istance of 4.0 m. What is the electric field at a point midway between the two cc .zs*k u4+ncp.8,g/ (qwaj ;xad cwspharges?

  A 5.0-mC charge is placed at the 0 cm mark of a me5tk8bnc m3bdd97y 7ks z: p/ethldy8dw9 v*d(ter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mark z3dm 5dwcny/d khld9t7 v:esb 98p8y*dbtk(7?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chec)h..(e*tchd;p vx z arge is placed at the 5cev e.)t. d(hzh*p; cx0 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 -7.0 mC are placed at x = 0 ana9ap u kz(j/ilop* 0:nd x = 0.20 m. What is aajlop0*9p ui(/n:kz the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are atl/o vw+3;6ku0nykhv7uek; dv the three corners of a square of side 0.50 m. The last corner is occulk nu+3/wokuevv; 7dvyh0 k6; pied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is :4l daa v6cfd:1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at ddfv6l:aca 4: (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 placa,kw z 0d8 oris89vpxtl7 )z6i52 ayhped in a uniform electriw5l8 8a d7)xzt2zikyp ,ipr 0ho96avsc field. What is the magnitude of this electric field?

  A particle with a charge oxgs(;zl5+n ew f 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 placedl xxkauuc g p,s (-3b+/ro:2tq in an electric field of 6000 N/C pointing downw,b-sg u pkc(+oxt/q x2ua :l3rard. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chc) fio-n;e9a oarge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What aa9) of ceoi;-nre the magnitude and direction of the electric field?

  A metal sphere of rad4ps +w+ehr)cfl7 qpj9i 0qd;h *3aux tius 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm f7j4cti0uwa+ eh fd) psqrl q;3+9hx*prom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.5hqs* s(nvmb/m x s-y,0 mC. What is the electric field *m(hsv qs5y-,m/b nsx 6.0 cm from the center of the sphere?