State the law of conservation of el9. 4ggqqle .usectric charge.

  Is it possible for two negative cha30y p8u(vvskz rges to attract each other?

  Is it possible for a positive and a negative charge to attract each 2fge3 fsr- yhc l(4b4pother?

  A glass rod is rubbed with a piece of silk. During the process thy8p5y9y.vx kgb.+ w7 ez6jp l,+vxr sse glass rod acquires a positive+6z7.ypj p 9y,5exsgyv kw+.vrx8bls charge and the silk

  A proton carries a

  The model of the atom sl ;,ut16tv/ .jz *yurf1h zowohows a

  A neutral atom always ha ka5n- 2ml0wzurk8r-q s

  An atom has more electrov5yr;2bbzjm:esc7+ w ns than protons. The atom is

  Materials in which the electrons are bound very ec gc/r.psh, d3kln06tightly to the nuclei are referrgl/3.shrcedn kp06c ,ed to as

  Materials in which the electrons are bound very la :1lnh2m1gyy g .ki,uoosely to the nuclei and can move about freely within the material are refery1h,k gln1 agyi 2um:.red to as

  A negatively charged rod is brought near o o/mis f**hu3qe d n1e7k5hln/ne end of an uncharged metal bar. The end of the metal bar farthest from the charie 5 uef3n1o*h//dn7mq sl*k hged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They aregm 6 mworm0-. eivg:x0 placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which s:6oemiwgm-g m0vr0 x.tatement is correct?

  How can a negatively charged rod charge an electroscope positia -wfu gf43yd7vely?

  An originally neutral ele/7 a/ ovrq4xt 8kiiqj/ctroscope is briefly touched with a positively charged glass rod. The electroscovqa7rqji4 /xk oi 8//tpe

  An originally neutral electroscope is ggx+thm+5rb(rf 2k h6mrounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, thef5+gbkmh(+ tm6xr2h r electroscope

  A positive object touches a neutral electroscope, and the leaves se0 ;oieme-*usz parate. Then a negative object is broughmu;*si0o-ee zt near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an ins-7b4 h8 jpmx.ft2o zkkulated 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, strike.b 7h8jk24pt-kzx mofs 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 C. s8doj(0)briqb gou(oulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a j;frzt-hzg-6v;k b3 zdistance d. The first charge is larger in magnitude thaz6z3 g-kzht;vjfb ;r-n the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nea cm6v( q14uuczr each other on an insulated table. Wh6c(u1zum cvq4ich statement best describes the electrostatic force between them?

  Two charged objects attra g8z cp815rh6iq;l1rh kv xp:tct each other with a certain force. If the charges on both objects are doubled with no change in separation, the force betwetrhg1 kqrvx 6il; 18h8c:p zp5en them

  Two charges are separated by a distance d and exert mut9 t h-appf0)utual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the ne u fppa0h9)tt-w mutual forces?

  Two charged objects attract each other with a force F. What hi h*w/gentz .:88vpcaappens 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 forih8 z.wa tgv8n/e p:*cce is now equal to

  An electron and a proton areq m( ot6p (sm7e8ahtg, separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton pmqmg(8o6t 7h(st ,ae if a second electron is placed next to the first electron?

  An electron and a proton h 3pn q.zdxazu5,ry,,are separated by a distance of 1.0 m. What happens to the magnitude of the foz,un q,5 ph,zay.xd3rrce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by ad(rggj,kl+hvhk996j/v - iyao 60n q p distance of 1.0 m. What happens to the size of the force on the proton if 6jl d,hg9(+j6/kyvq-hi k 0n9rp oga vthe electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the centrpa9 tl 70oe,dc(5v dter 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 tc ,tverd5al(p 09ot7dhe 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 centrk* 4y iajx0y.roid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an ele*40y.ki a yjrxctrostatic 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 isae yt ,(vdl1+; ywx:kcciw;o( not a vector?

  At twice the distance qr/ y8g)y u4sz 6ve8wrfrom a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and pi qv)a-w5tgv.3 s4yjkositive charge along the line joining tkvq 4a)ygsj 5. viw3-the two charges?

  Is it possible to have a zero electric field value j rot/zdy3h:wgf g,8b)j,t 4mbetween two positive charges along the line joi,z t)g3j/ydmj8,r:w g foh4btning the two charges?

  Electric field lines near psitive p:y -,pqkz+w8q6hlkpt 5g,mng oint charges

  The electric field s,) w r hc8ogf/kd1hkrh *hqh34hown

  Can electric field line r7cl. )sq.tq8dxdk h-s intersect in free space?

  A solid block of metal in electrost /k8ubpz1 qu2vatic equilibrium is placed in a uniform electric field. Give a state1vu2u /8kp bqzment concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamargq37 s w0y1lajq11dv -lpo(eters are each given the same charge, the electric field (E) midwgaaps1djw l 1r(q-0 v73l1 yqoay between the center and the surface is

  A cubic block of aluminum rests on/4jag n,- foz:wiqf9,)p:q pnh v jp,f a wooden table in a region where a uniform electric field is directed straigf: ig9,/zjva )4pf q- :fpw,njhp, qnoht upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equil:7pqxflo iz -4ibrium near an electric charge

  A positive point charge is enclosed in a hollow m 2z 9ttvs53zf2mgj; 1:pmkg6a( dilgpso7nv8etallic sphere that is grounded. As compared to the case without the hollow sphere, m76s;vg1 9d gfzpo3i tzl2 jt 2gms ap5kvn:8(the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equiliih3/k ,*bn0)jigy+ n;3fumvxdwk jy h4b. , nubrium.

State Gauss's law.

  The charge carried by one 7bzq*0tv +d okelectron 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 q7g2 ,v(ol9 v*klzyysmore protons than electroloy*v qv 72k z(yg9ls,ns does this piece of plastic have?

  What is the charge on 1 ur 7gb*fz + msbs5rq4;kg of protons?

  An atomic nucleus has a charn;d qh +e5jfuyj/f(q0i lwg63ge 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, wcp64c0d q1mz have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betwe6 c mz1c0w4dpqen them?

  A 1.0-C charge is 15 m from a second charge, and the forcg+tn cjdrlt 7, fa9u7:e between them is 1.0 N. What i9:ljfac td7,ungt 7+r s the magnitude of the second charge?

  Two 1.0-C charges have a :5o6py x,dqeu y-a9syk2j si7force between them of 1.0 N. How far apart are they?

  The force between a 0gyj 9y0w,85fb 1.w,yolpe-i cj-l qiqfoi b7$30 \; mC$ 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 a z6jj0okll;b k 15o3spre movedk1bl j5ps 63k0jolo ;z 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. The firbyyckkszgnx8j8-03dok 1 ) uo:q +b) a: qve2ost charge is at the origin, the secod:goo-kcb)0 y v2k j1)xseok8b+ 3 qz8: qunaynd to the right at x = 50 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 +28n k ( zthpexym6nx ,:dt(i9k3.0 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 azm e (h 9 nkd:yi6tt,nx8(p3kxre the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following posito (xt;v, -umseions: 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 maom(setv-x ;u,gnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at tg 3lu2*fd-wn 9ff3 xnahe center of a 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 center. What is the magnitude of the force that acts on the center charge if a third charge of -Q is placed a 3an2d*-fgf9x 3fnlwut the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (d k:* tay, f* k8c0fo;0lasgvo0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net forg:kf ;lo0 c ,yt*k0 df*aao8svce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nqq gyf tr9ht 4kag3/8rp :w*4mti0fe ;C is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directirgq:84;*4 r f0gefht i3kw ta9pqym t/on of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placedtb/dj9thbz7c1s+2d- d gof9c at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one otd9zd -1jg/9+72odf c shbc tbf the charges?

  Consider point charges of +Q and +4Q, which are separated bo d 93/zypup8zy 3.0 m. At what point, on az93pp/zy u8 od line 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 origin and a +9.0-C chab9c fae)wzf2so6h g4+b uk 1-zrge is at x = 4.0 m. Where on thekgzo)- 1s6 +w9e24zhfb acufb x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -m)yu/-7fj nxqi: cv n98tjgwjezs 2ym*l(-o0q is placed at x = 2a. Where can a third positive charge njv- l0q)ey9jtg iox*ym-c8fwum:n (j s7z/2 +q be placed so that the force on it is zero?

  A copper penny has a 6gbite3 et-z rwwx*y*z;u*o)3b* vk pmass 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 forrdja l5da*4 h0ce of gravity by the attraction of a fixed proton some distance above it. How far abodr5 lh* 4jd0aave the electron is the proton?

  Two 0.20-g metal spheres are d)2f6h5 p lr)hcl)fmahung from 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 angle between the threah))lalm pfr62 f c5hd)ds is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the 137ub9,-ao9fbosgvo ob 0 d3fdp;vyc magnitude of the electric field at a di30bdvg ocf9,;ps au oy37ofvdb o-91bstance of 1.0 m from the nucleus?

  What are the magnitudek g runbrsz; /3:36k,ewmzow j 7+7qku and direction of the electric field at a distance of 1.50 m from a 50.0-nC chajrk+w o,6:sn bw/7m; 7kekzuu3 gzrq 3rge?

  A 5.0-C charge is 10 m from a smal9i4mo(0ih hhqhap *; ll test charge. What is the magnitude of the electric field at th 9i ( hlao4i*hq0ph;hme location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What 6wlij+ud n,h 9suab:l1- * djvis the direction of the electric fieliwb+j un-d1 :*l dj9ha u6,vlsd?

  A 5.0-C charge is 10 m from a small test charge. What is thel -a54iy9 m al1 :oxc0q;zdszv magnitude of the force experienced by a 1.0 nC charge placed at the ;5v-z mcyl x1 4ql:aso09azidlocation of the test charge?

  Two point charges each have a value of 3.0 C pxl mhf ;xe**0and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two hfx0 l;*mxp e*charges?

  A 5.0-mC charge is placed at r( ji 5)vdtka9the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What isk(ta 9iv)jd5r the electric field at the 30 cm mark?

  A 5.0-mC charge is plac87ckb+v, jreoe ; 3yqo3 hd6mged at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what pokchv o6mqoe jb 8r;3+y e,g7d3int on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mCz65n-ynop ol ,6 rpqa4z-r7fd are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point m5fl 6, 6n4oyp- q-zaprdozrn7idway between them?

  Three 3.0 mC charges are at the three corners ejvu.z*m,:3op*k0 k rf(o z38mvvlus of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the (ev lm vs0,zru v3o3z.o* kfu: *kp8mjelectric field at the center of the square.

  Consider a square which is 1.0 m on a sios2sw-m 7 o 0fgqb4f.tde. Charges are placed at the corners 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, 1). What is the magnitude of the electric fies o-o 7f 2t4.fsg0qbwmld at the square's center?

  A force of 10 N acts on a charge sdub jqf50t2pre5 h2,of 5.0 mC when it is placed in a uniform electric field. What is the magnitude o2 t bfj5ph0 5rs,uqed2f this electric field?

  A particle with a charge of 4.0 mC ha vd4hs.c v- *r)p aqfsehl58h(s 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 ii:as.xikz / mz,4ty9xa8ij )0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be p xxit/kazi j8 :,a).zsmi 94iylaced on the ball for it to be suspended?

  A foam ball of mass 0.150xqr ,o5yhfs(gcf 59 o4f1vyu13z4i zr g carries 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 d5o 4z ,iqryzu(oyxvr13cgff45hsf1 9irection of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.sgsr)v wpc mh + cvv7dz.+n db/u:7,o30 mC. What is the magnitude of the electric field 5:c/),7cn hbwdvdvo r+ 7 gpzv.3ssmu+.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+:x6liag q(ts f+0vo gric field 6.0 cm from the v 0 q+(lg+ga x6fsit:ocenter of the sphere?