State the law of conservatioq60o6bma*d1tqsgsyt 0 gt:j+ 3z p5uln of electric charge.

  Is it possible for two negative chaqwb5f8xs9c:09q2a d d hag.+y4 )ffqqg5ebs trges to attract each other?

  Is it possible for a positive and a negative charge to aysz+fn 0 x(f(o8+aivzue)k5 attract each other?

  A glass rod is rubbed with a piece of silk. Duri+d0z 51 a*w)k/n cjjuu j)xpfang the process the glass rod acquires a positive chax jjak/5+up*uwf jnz0 )d1ac)rge and the silk

  A proton carries a

  The model of the atom show7 rn9l8zacsn 7s a

  A neutral atom always hc;;+lukqzu01 iptilv1 x5 eg5as

  An atom has more electrons tx8)fw -bvc5a . vmlj7ihan protons. The atom is

  Materials in which the electrons atpkq; tz1 ;vjf h/ik+z92u1p jre bound very tightly to the nuclei are referred to asq+1f;j/ tkikupp 2vz19z jt;h

  Materials in which the electrons are bound very loosely to the nuclei and can moum a1xku:nab.a 7916b 8hiegg v:.1xb6b 89uen km g7haiu a1gae about freely within the material are referred to as

  A negatively charged rod is brought near o.nk3dv. kgx )e4 w5iyane end of an uncharged metal bar. The end of the metal bar farthest fro. knkeyga v5i).4dwx3m the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They ar. ;hy *p8u kz5d/n:j,cvzv lxcuqi6( pe placed near each other on an insulated table. Sphere B is briefly touched,qj6yuvn;ux dv cc.8lh:/i pk z* (zp5 with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chargeh;ep hdoce1k 5 y jxv*)z;5z2b an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charged n6:-fiv0uzpkz -h 2* v2vuv exglass rod. n kvf 0 :ipzuezu2*-h vx-vv26 The electroscope

  An originally neutral electroscope is grounded briefly wh(e h.w*khm;gvtey;kl gjq r4.t9 5l 5aile a positively charged glass rod is held( h ;tla4;e9gjwk*hy v r5.qk.5tlgme near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electrosfwr 648ai+ jfvcope, and the leaves separate. Then a negative object is brought nea frwi8vja6+f 4r the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table (dun1jsdp6tpv5 8dq7a m,.ju. 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 toupq8 p,d6tauu(j. sdd mjv75 n1ch 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 Coulom2ht 0-xukro7f0j2t slb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is t y cyq)ek3c7(larger in magnitude than they )(yccq3ek7 t second charge.

  Sphere A carries a net charge and symqx s j.-sn+4vzv);xv7 *mbrphere B is neutral. They are placed near each other on an insulated table. Which statement best describes t-rx+)*v7q ys;.sbmvj zvx4nmhe electrostatic force between them?

  Two charged objects attre :l 05gaey41xedr2xumvz0 x 2bxxu68act each other with a certain force. If the charges on 5126 eye4v8adxlmu 0b0x eug zxr :2xxboth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractiv) aqnx;e(*vd 9lco9us e forces of F on each other. If the charges are separated by a distance of d) sn(*o cd9qvae;xl9u/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. +.m +rtx/fcxyu5 ty0s What happens to the 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 its original value? The force is now equal x50ur/ +tct +yfy.xms to

  An electron and a proton are separated hyf.b.*bo tk7by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first elec.7b *both ykf.tron?

  An electron and a proton are separated by a /c vf0)b5 jsftdistance of 1.0 m. What happens to the magnitude of the force b jfc5sv)tf/0on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distanwt,9uiqfs tthnrl5w0;5 w:i ubb ,w ()ce of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to h i:iws;rw(bnw5u),t ,l0bwt 9u5tqf the proton?

  A point charge of +Q is placed at the center of a square. cf w/j+qinv,f +d92ax 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 +v+dffjw x/n,2ac 9iqN 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 placedhmzmq p9el)h* hra( ). at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the trian hqm ea()mz 9*rlhh)p.gle'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 placed at one of the other vertices?

  Which of the following is not a vector0ynk 4rd k *fms(kn2d8?

  At twice the distance from a point charge, the strength of hohw 6w;10u))qnx5b lxdw,xr the electric field

  Is it possible to have a zero electric field value between a negative and p +(tlg):n;o6m fowyky ositive k:y;n ot)og6fl m(+yw charge along the line joining the two charges?

  Is it possible to have a ze9kadb: y zi:o g6kqje 1;:t1gzro electric field value between two positive charges 6tzzkj1yo;1ggka:b 9 ie :qd:along the line joining the two charges?

  Electric field lines near +or,yu4o cwk, g,4xqupsitive point charges

  The electric field shown10nis dlg0tp 1otb-+3a9j c ey

  Can electric field lines intersect in fc /vtuuk . ,laz fz)oj2;r:j dhib94:uree space?

  A solid block of metal in electrostatic 2 g3;iibcu 3iaequilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's 33 uib;cgii2a interior.

  If a solid metal sphere and a hollow metal sphere of equal diametersnxz /ioo7hx-4 are each given the same /xh 74 xznoi-ocharge, 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 where a o,lko:8muv3pn pw w1 gx(,s)xuniform electric field is directed straight upward. What can be said concerning the charge on tlv : snxp, (pwwxk),u 8o3g1omhe block's top surface?

  If a conductor is in electrostatir3m7ql41ila3 l. l bonur:hl(c equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere tha1aovwxw bvqv: *:tv*m nf,2n3t is grounded. As compared to the case without the hollow sphere, the electric field at a poinq:tnv vw*f3vvbaxmow1 : ,2n*t directly above the hollow sphere has

State three properties of conductors in static eq483 jm,m 50xrv 8ewlar ut.-no; xoubhuilibrium.

State Gauss's law.

  The charge carried by) dyxf,wym h/ok w )f/*/y9soc one electron 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*tp-e299xd1c bvs jh x of +2.00 mC. How many more protons than electronspxd x9vtb2jh1ec*- s9 does this piece of plastic have?

  What is the charge on 1 kg x n4 y1lymqb4-of protons?

  An atomic nucleus has a charge o3hc3 a :0oqobx/0ehf vf $+40e$. 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 2p0:alw2es3 ex5ura -m.0 and -4.0 mC, respectively. What is the magnitude of the eerama l5w 02 xeu:3-pslectric force between them?

  A 1.0-C charge is 15 m from a second charge, and te.o2p/0fw l klhe force between them is 1.0 N. What is the magnitude oflwp0o e /.lk2f the second charge?

  Two 1.0-C charges harlvul 9p p.+4;ero9 teve a force between them of 1.0 N. How far apart are they?

  The force between a c94 u 3i rsudn2nr.yf5$30 \; mC$ 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 fbk;0x5v5ast n km.t3(prbml( orce. If they are moved to a new separation of 8.0 cm, what is the electrk5trbbs3 lm0kx5v n.m( p( a;tic force between them?

  Three identical point charges of 2.0 mC are placed on jxhi;xeu;qk ct r; .d:,5vq4ythe 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 d;v,.u4cie : j hxtkq;rydxq; 5irection of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge .);od vsvrvykr1y ct, :f6qo:of +2.0 mC is placed at the origin, -2.0 m C to the rirosot1k fyq. 6 v:r:v;,d )vycght at x = 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 the following positions52+:ia,jvr3o7dqfn rlz n, os: 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 magnitude of the force on the 3.00-mC:o7vql rs5o ardz+2nj,, 3ni f charge?

  A point charge of +Q is placed at the center of a square, and a second poi4 p2iv ho(0 woroj)hc*nt charge of -Q is placed at theo)hcvw2*ri(hpjo o 40 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 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 4f. (etzjkic9 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the ma(jt k4fz.i ec9gnitude 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 y ydd(s9-9cniarkpea;32bo: = 5.0 nC is at (0, 0). What is o-dkcpn9e si;ba3:a9 r y2d(y the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed atqr4f7ha u 2vv2 the vertices of an equilateral triangle which measures 30 cm on a sia 27fq4vvu 2rhde. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges oqw,p k+ +3qg6yvtkr+sf +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to ply+3gtw,+ vq6 kqpr+skace 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 +q,ax 8.c8 unkp9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be plac.,k8 c qa8unxped so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where nufrr+ kn8 78ecan a third positivern +8n8u7ferk charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totaln+tg)d3lnvrkfu+0* z 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 atc) e )nuvy/o8mtraction of a fixed proton some distance o8y)v/m)ncueabove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncs7 x, p0 ukbs:08mlqasonducting threads which are 30 cm long. Both are gi sxa:u8p 0sl7 msb0,kqven 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. What is the magnitude of the electrirp9hwgd,o/hx:e kd 9 vwc(v;.c field at a distance of 1.0 m from tw .re9gx,9 ;/vh ddw hvoc(:kphe nucleus?

  What are the magnitude and direction of the electric f 6a,rt 74 /feuofw6lzuield at a distance of 1.50 m faruff4tluz o7/6e ,w 6rom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a s-/x ao7uw x/qsmall test charge. What is the magnitude of the eus wa7// o-xxqlectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charg,n5h*uq8 yoetc-c omy3bej62 e. What is the direction of the electqj* 6 c n,-c352m behyoyu8etoric field?

  A 5.0-C charge is 10 m from a small test char7 s6kop2zh j z ql3zxl9 +sxzt*i8uc8(vyz-2ege. What is the magnitude of the force experienced by a 1.0 nC charge placed at th8s + i 276ozvzxy(u8p9zljce -l thxzz2 s*k3qe location of the test charge?

  Two point charges each have 1u qi0(2zdp vhndj:)hdfw.)ya value of 3.0 C and are separated by a distance of 4.0(v).)hf:qzdp0h2y j w1ni udd m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a me dzu *vy*8xk4uter stick and a -4.0 mC charge is placed at the 50 c x8y kz4*ud*uvm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a 94):yn+gynyiqm)22zryd ar k meter stick and a -4.0 mC charge is pn4r :)yy k29dzqng)iym r a2y+laced 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 ana4+3pz kq*iwa*mb,j zd -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of qpzjb4i +ka3z,* mw*athe electric field at the point midway between them?

  Three 3.0 mC charges arh *rnw(e hdl ux.xvrsiqqi ::v0+ 0-r9e at the three corners of a square of side 0.50 m. The last crv0.e:ixi:qd shhq*+(urrx v n 0-w 9lorner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the co1qisralz0)3eq t(xvxe7+ td4 rners of the 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, 70i d q31e artq(+ )4xletvzsx1). 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 unifor5kn2 ; 2qq zxdz glqt8-/cln2km electriqt2n2gll z-x8dq; / czkqk5n2c field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass h j 4z*2ygy mc6gtw,m,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 elu(xbvsw8 v4: r30 nrmc4d;jlrectric field of 6000 N/C pointing downward. What charge must be placed on the ball foj :s mxv4(ruc n40d8vr3r; bwlr it to be suspended?

  A foam ball of mass 0.150 g carries a charge ;zj2p:ej s6ayh7 xa e8 0k/togof -2.00 nC. The ball is placed inside a uniform el07e hkz:yp2stje/og68xja ;aectric field, 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 of +2.1 iq3odc)i9t u0 mC. What is the magnitude of the electric field i3)itcod1q u9 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What i ger .;61cqihdtmri4u7ju5ezpv 5 5;jf - uw)as the electric field 6.0 cm from thzej.iv -;7m55uw cif1h pr ju4eadqr5u6)t ;ge center of the sphere?