State the law of conserva/qnjk bd;):wud/ydc+e,smo ;tion of electric charge.

  Is it possible for two negative charges to attrcd/d4/o y9lchact each other?

  Is it possible for a positb3dkzt :*:xqfciu h) /ive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silkvo r-i2k0dvg9 . During the process the glass rod acquires a positive charge and the vgv0riod29- ksilk

  A proton carries a

  The model of the atomovp4445zlo;gep/ d qm shows a

  A neutral atom alwayh5oe0 (sf5cm(yeqd:ie 1xmn0s has

  An atom has more electrons than prott6d+mj pru h qny1,/n5,vbso3ons. The atom is

  Materials in which the elq s3om*wq dao2 f68se4- c25zhgnyy4 kectrons are bound very tightly to the nuclei are referreefd4k46 z s5qc3ah2so m yoy-8q*n2wgd to as

  Materials in which thce3.t4c1ld w+-drmtt e electrons are bound very loosely to the nuclei and can move about freelylm4w.tt3c ecdd-1tr + within the material are referred to as

  A negatively charged646bzonyy360vh:k yws90 a8 ty xvz we rod is brought near one end of an uncharged metal bar. The end of the m s0 t6yob 9wvka0y:y6wzhe6 4 z8nvyx3etal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is n8qwfe qz5z8v (c7aog pgj g8.l-9du* zeutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is gr7dwv l 9.gp8z a*-gqzj88(uf 5o gezqcounded. Which statement is correct?

  How can a negatively charged rod charge an bf-j yi55fq- o , j-;-8;svym clbnwzkelectroscope positively?

  An originally neutral electroscope is briefly touched with a positively chargeda:vb.emoa fq*7h-jv5zdk/ (c glass rod. 7 (ae ad*5hvzovj/:-q mfk bc. The electroscope

  An originally neutral electroscope is grounded briefly while a positively p lq5jy/oo*n. charged glass rod isn l/jo5*yp.oq held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, ab :m/o1tcsbs .nd the leaves separate. Then a negative object i:/bmssc.1o b ts brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulatemz6z(o4o b b+ju((gq hd table. A neutral metallic ball rolls straigho q+(gh mbu(z4b6 o(jzt 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 object. What is the final charge on each ball?

  Charge is

  What are the units of the Couxb8 w :-m+f4rpjibe3 glomb constant $k$, which appears in Coulomb's law?

  Two charged objects o)c7u 2eycuvvc .xe. (are separated by a distance d. The first charge is larger in magnitude than the.ev xcuvoyu(2.cc )7e second charge.

  Sphere A carries a net charge and sphere 1ryfv7p .y,.c, vl/z 5cpmmyf B is neutral. They are placed near each other on an insulated table. Which statement best des751m zp,vy. f/mcyl,yvf rp.c cribes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges oolybf b./9 y*cn both objects are doubled with no change in sepal9. y*/fbcobyration, the force between them

  Two charges are separated by a distance d and exert m;2 fx.tsl6qyo*8p z kfutual attractive forces of F on each other. If the chpskz.fxo6*q8 y l ft2;arges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each ou /pb +s tb+qxo8liz47ther with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distbztou4 sl7q pbx+8+i/ance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton ;fidyrng m6katjz ,-ee3 cc+me:87f7are separated by a distance of 1.0 m. What happens to the magnitude of the y dr eca+:k,z3i6 c7-7tjmn8eg;me ffforce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hap+ayt xm oc r/91-(drfypens to the magnitudf (r-1ay+cr9ydmx /ote of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What dewup -ncr1 ec/kpne :5 .jx19happens to the size of the force on the proton if the electron is moved 0.50p/ue9 e5cd -p:n1k ewrnx.j 1c m closer to the proton?

  A point charge of +Q is placed at the center of a square. Wfic/dk pj; + n;g8zqcwiv.3( ehen 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 act +keij 3f/zd (;i.pv8c;qgnw cs 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 at the centroid of an equilateral triang2d 1r+ yh8vxhtle. When a second charge of +Q is placed at one of the triangle's vertices, an elecyrt x1d2hv+8h trostatic 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(u inumyp-8r +80c2r,scelp z is not a vector?

  At twice the distance from a point charge, the strength of the el 12kyt-tgvbt5q85sdwn .c7me ectric field

  Is it possible to have a zero electric field value betwee8,xq) *xtmv :d922z gnwndn+jiq)crs n a negative and positive charge along the line joxrs ,w+g dz t8n)*qcnd m)vj2 9iqn2x:ining the two charges?

  Is it possible to have a zero electric field value between twf(f pi +9zkcx;o positive charges along the line joinf+ i9fzxp;k (cing the two charges?

  Electric field lines near psitive point charg p oqe8l +b b21hthw8c7a/g. 7gqkiy9,d -alxces

  The electric field s-/axhv ui6z8c(;m 8 4bs ontrrhown

  Can electric field lines intersect ind,wfhl31jh 3h c4 vmj* free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniforqc; f;wdo8kj *l ju 6ob+5ozy6m electric field. Give a statement concerning the electri*oj ;y;koc6+dq6f5o8 zjlw ubc field in the block's interior.

  If a solid metal sphere and a h;e+l o d07um rs, rcx(t4n7rakollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center ol,rr ate0+u sxc(77r;kn 4dm and the surface is

  A cubic block of aluminuvoov. jjofv- q*ddo90;b + gs6-bbv:km rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said conceos6 +j;-b*dv.vd9fo kqoj vvo 0bg:- brning the charge on the block's top surface?

  If a conductor is in elect skgp-n 6p:vj3t6,lhtrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow m o.wrw-j:j5);0bsuvtx n ye-9blb/hx;qyi4 metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a poi nxq bov sb9/uh;;0jr:-il 4txbyww m)j-y. e5nt directly above the hollow sphere has

State three properties of conductor v2+y st/bd3zx:ki7qy hfj+d9s in static equilibrium.

State Gauss's law.

  The charge carried by one w:8ff8o7j:o;b57wc i om fslyelectron 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 more pr,2cjn2h2hsq2 6ma) ai 3wxtg xotons than electrons does this piece of plastic have?a6xcma3x2, 2qh ) njh2 s2wgti

  What is the charge on 1 kg of protoniy 8 8d0/mu/ laiz5hyks?

  An atomic nucleus has a charge of *:cc ( d3svddkee*w+kyq0 7ez $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sej7pqc 24 deg sp2syp*o785wu pparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the eled 5g7u*ppcp8oy 2w2 7jps s4eqctric force between them?

  A 1.0-C charge is 15 m from a 4) luo+mp82rbji7 xou o7e2im second charge, and the force between them is 1.0 N. What is the magnito)lx7r2 j8 +i4miuoe72 bmpouude of the second charge?

  Two 1.0-C charges have a force between the)qgioa-k / 2ckqk,2bu m of 1.0 N. How far apart are they?

  The force between a wcp 9 nh.9 b6nq(wa1 stct:+hyi0qaq +$30 \; mC$ 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 forcertqnr t7ii406s w2oo h;th 2khcu :.e). If they are moved to a new separation of 8.0 cm, what is the electric force betweeno2 wkc: 6e.his ; t) 0r7hutin2r4qoht them?

  Three identical point charges of 2.0 mC are placed on theb, e;4n n w,;k bt;yxhf,eqhi0 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 4;,nheb qw,thby;x0ienk ,f; electrostatic force which acts on the charge at the origin?

  Three point charges are p8 cxht8wd.n6 yd,wt,dlaced on the x-axis. 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 are the magnitude and direction of the electrostatic force which acts on the charge at the origiw .t8c,8dny6hwx ,d dtn?

  Three point charges are located at the following positions: Q1 = 4f lb3h svfzh4zn1k0 s oi35/p2.00 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 5/ kifvz0s33 fbno14zhs4h lpon the 3.00-mC charge?

  A point charge of +Q is placed at tc/fh z o,vqkur2u .s-4ts)r0yhe center of a square, and a second point charge of -Q is placed at the upper-left k yz,r/ou ss f-r)q04hvut. c2corner. 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 nC is at (0, 0.10 m); Q3 = 5ybg o n ixi 3q,(7uicbtz48h97.0 nC is at (0, 0). What is the magnitude cqbzu 7(o 4g hb7txy93,nii8i of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);vtpo8u:ge vw(bdb. 9jki;1 j 4 Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the(ovpbu4d9 vgkie .j:j;1w t b8 5.0 nC charge?

  Three identical charges of 3.0 mC are placed ak oww86 lo/1(ed lss0et the vertices of an equilateral triangle which measures 30 cm on a side. What is the mkl1 sw60dlwo/ose(e 8agnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by pvl+7b5nsqz(j1g a9l 3.0 m. At what point, on a line between the two charges, would it bel bpsav1jnl 95(gq7+z 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 5i;r:9tpq:; gnjf oqt and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placrq; :p ;gj5fqint9to :ed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is plunij./f s2z + -.gvigsaced at x = 2a. Where can a third positive charge +q be placed so that the force o g2/n jsiv-.isfz+.gu n it is zero?

  A copper penny has a mass of 3.0 g5v n k1ygzq5f2. 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 p5g*qg:qvf: c zw lr:;by the attraction of a fixed proton some distance cg:qq:lg5;zpw *r: vfabove it. How far above the electron is the proton?

  Two 0.20-g metal sphtpl.1,/rqzc wz c6o 3k*ew, y *l5visyeres are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges,w 35llck1eo/z 6 *ip*,r zyyq.sw tvc, 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 magn-)5go9no;kwgt;i eh kitude of the electric fieldhkte i;g ;o 9k-ng5w)o at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of 3wskuj2ts2 3b the electric field at a distance of 1.50 m2buss23t3wkj from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test b8l4ptqj5r5c4 hih (b charge. What is the magnitude of the electric htjl8b5i rb c5phq( 44field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What c yx5e;cnaqbkz6 8v 0;is the direction of the electric fi6aeyqncx kzc8;v ;0b 5eld?

  A 5.0-C charge is 10 m from a small test charge. What is e,vuk1 h x-mz n4ss-0dthe magnitude of the force experienced by a 1.0 nC4,m zv-k0enx-du1ssh charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a 6z adda,a6s gkm agunv81+ht266d(hk distance of 4.0 m. What is the electric fahaz216+u66d gg6m(d t8anadv kh s,kield at a point 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 charg-xo (f; c3smoau/ nki7e is placed at the 50 cm marxuf7 (o/sk -i3camo;nk. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a mk5yu7 k,h :4h 4gjcif)cnmv9y +i7 iapeter stick and a -4.0 mC charge is placed ati acu5fihh779k )4 +4iykyng j,:cmpv the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3 ;90.yogvnmzj .0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude vmy; 9j0oz ng.of the electric field at the point midway between them?

  Three 3.0 mC charges are at the th1nm,*9k m4 e+m dmiifhree corners 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*m dn1+,m efi hkmm49i center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the c /pmoz36h6sa horners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 om6s/ ph6ah3zmC 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 chart9 y.:uuu*zsyge of 5.0 mC when it is placed in a uniform electric field. What is the magn.*y9syuuz u :titude of this electric field?

  A particle with a charge 2uz*y (mz:qbsof 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 placed in an elecpdml 7y9u0tde .u .uiv-a8. zkldd,2ptric field of 6000 N/C pointing ddu.dyu.a0i8l7-z p lt.v pem9d,dk u2ownward. What charge 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 sm)/(; fa/ awgf9+xik gcg1qd ball is placed inside a 9a + 1 idk/)axgf scwm(g;gq/funiform electric 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 +2.0 mC. What is the02uo/in fqh;gw w td16 magnitude of the electric field 5.0 cm from the sphere's f6io; / wqwuntd1h2g0surface?

  A metal sphere of radius 2.0 cm carries a k3ui5s k+ k+ h ,*x 25 txwabtuvv:j0konqpl9*charge of 3.0 mC. What is the electric field 6.u pk 0sk+hkx*n *5aq9vx53wtu 2tbjo,:l+ki v0 cm from the center of the sphere?