State the law of cons,fvg2 zm s/-)hz +qlriervation of electric charge.

  Is it possible for t lg*,wr +h cd-mxv8-skwo negative charges to attract each other?

  Is it possible for a po yom mb4dbmjc2( m66+bsitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. 4*hdfb2od vx( During the process the glass rod acqfv(4o* xdbh d2uires a positive charge and the silk

  A proton carries a

  The model of the atom shows(dqn0n4 )fbcd a

  A neutral atom always hasbe rxe7rs m:d5+n 5u ./,j5u:jbkgy fj

  An atom has more electrons than protons. The b-n2cuyshm(aet8i-m: il 85datom is

  Materials in which the electrons are bound ver +ncq)4bqcs9r9v p f6ey tightly to the nuclei are referred tr6ccp + qe9fsnb) qv49o as

  Materials in which the electrons ar8jygx1 oplrl:g,/a3af9nr 3r h8fh0ge bound very loosely to the nuclei and can move about free/apr h1, xg3fgnro l: j8a8f0rgy39 lhly within the material are referred to as

  A negatively charged rod is brought near one end of an unch m+v* rz,xv ;wx f6jyj2fux;n7arged metal bar. The end of the metal bar w 6vzj;* jfxrfy;xmu+7vx n,2farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere u/;hp2zail k n-y*t: tB is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which stateme2:y;tpi*un tak- zl /hnt is correct?

  How can a negatively charged rod charge an elq) jx.by xs(o9ectroscope positively?

  An originally neutral electroscope is briefly toucheag 0zw/2de1i eqo6jb )d with a positively charged glass rod. The electrzeg)01o6 dj /w2ieaqboscope

  An originally neutral electroscogpfgi:/j6e3y 5z /mf/n9 t v2iwhl3 j/dqcjw6pe is grounded briefly while a positively charged gl9 /cglmj6//3ij/2qjgv:t6fzf diwep n 5hy3 wass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscgdgoxa *7g6b u3fw5f/ope, and the leaves separate. Then a negaabdg3 gf6o/uw*f x7g 5tive object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed o9e *trwa eu xm9-px e7,wtm:y;n an insulated table. A neutral metallic ball rolls straight toward the object, but stops befw9ur;exm,am7tt:y9p *xe ew- ore 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 Coulomb cevnyty-yf7(,1s z ;lt8:e.xd ,pjx mf onstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargksaxp q e,s-na,/ e6,qgkio2,e is larger in magnitude,q,xg a2 ik6,s/pqs,oee-n ka than the second charge.

  Sphere A carries a net charge and spheredwq0e9 sqpzpzp(uz;bel;z 9:: w.l4 t B is neutral. They are placed near each other on a:9 w q;p;.zl:zzd t( we0zepqb9u4sl pn insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a c6nio6 o2n 0 wd3 l8zbimkfmb1y10x9qaertain force. If the charges on both objects are doubled with no c1yqx 9kzo13dm6n6 o0niaimb 2w f 0b8lhange in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces o,+z3 3icpzv f;i+jeeze lyb7fxnt1+7 c+icy,f F on eacti,fi1yvc3e l+3yz+nz7 jze ,fx+c+7eib ;cp h other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a :0wbi an0w +hxforce F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers i0 ixaw b:h0w+ns reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1m2 a,uv+n pfw0.0 m. What happens to the magnitude2mp+a wuv, 0fn of the force 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 5w6r4 -1xi fns-iqto wm. What happens to the magnitude of the force on the first electron if a second n4 1fqtr ixw-i-5o 6swelectron is placed next to the proton?

  An electron and a proton are separated by a dr s9e(r,(wxj52ksfp histance of 1.0 m. What happens to the size of the force on the prj (xssp2w fe,khr(5 9roton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed l3*h:r1.to bdf-kdr2hg vti9 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 charg1dh32fr-* or: il kdvgbtt9. hes 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 c 4pmq4he:kon,duy(wbbdwqrj13o3j ;y;p7t7 entroid of an equilateral triangle. When a second charge ofd 3uqt1kp wqm(jjybon7:o; 4e4wdy,;b hr7 p3 +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 charge of +Q placed at one of the other vertices?

  Which of the following 2 gcyohs8y;y7is not a vector?

  At twice the distance from a point charge, the strength *3qsyh+)emdharxik9t)1k *miz /aa1of the electric field

  Is it possible to have a9ac.z 7j( /nwu*t lwng zero electric field value between a negative and positive charz7a/9 u *clw n(.nwgjtge along the line joining the two charges?

  Is it possible to have a zero electp90/ docy/qj d19mpcb ric field value between two positive charges along the linem/cboypp1j d cq9 0/9d joining the two charges?

  Electric field lines near ps/(w.t oqtb zi-itive point charges

  The electric field shob (4 gqfja i;ovo;di41wn

  Can electric field lines interse-e zii q,xk**rwr;qb .ct in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform ele( 3( vqtfs0fm8z4nmxr ctric field. Give a statement concerning the electric field in the block's interioq4m8sz tfr mfn3x0(v(r.

  If a solid metal sphere ,d l.448d o,5les d-epiqforw6i +z sn i;b(fvand a hollow metal sphere of equal diameters are each given the same-i4fb fdqwzi(lpr nd4 +lsv8,;o . o6s,5 idee charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminums8h0 gf8 *h;bqg6ey yc rests on a wooden table in a region where a uniform electric field is directed straightfghy60c8 8ysq*; hg be upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatijgqauo*k :c 3vqjz1:( c equilibrium near an electric charge

  A positive point charge is enclosed in a holhz* kaz2uw9xs/w,5kblow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directlk*z2/ azhw u59kws,bxy above the hollow sphere has

State three properties of conductors in static equilibrih /a:o1yu,( rdhdo) tkum.

State Gauss's law.

  The charge carried by one 0in.k 8r1r*.txi xk;(xf +pjzrqz-ly 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 of +2.00 m/izray--8* --l lfunfb6o wadui -s w.C. How many more protons than electro/li--sr aib8fzd-flo y u6w- -unw .a*ns does this piece of plastic have?

  What is the charge on 1 bdki,-d d0);cm yv(wk kg of protons?

  An atomic nucleus has a charnzb p-8xzskpq9+a m3d ), xrg)ge 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 akvw: 2 ldyq )h wey()4espzml0/ec 60ond -4.0 mC, respectively. /)v y h:20ede4lcek p)m wyzolsq0(6wWhat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge,)0;5t0sod s np/4wgsb8ljwit and the force between them is 1.0 N. What isg ow)injws/0l 0sp85sd4t bt ; the magnitude of the second charge?

  Two 1.0-C charges have a force between them of3. sqp.qwvq.v 1.0 N. How far apart are they?

  The force between a gsvgv)xn1r7seil*4,ulumn 3 ji82 h7$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, init f (nov7mb88cmtete8+ially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the elceo8(b +m tetnmv8f87ectric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Thiij n4khgpo,whu7-x9.v q.qt v e )x5(e first charge is at the origin, the second to the right at x = 50 cm, and xvo.vqg)pikhqx57h j e. 9nt, 4u( i-wthe 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 ogbmag4 n/livz)wco -(9ky1) mf +2.0 mC is placed at the wiy4-9v bk )onma ()c/1ggzlmorigin, -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 origin?

  Three point charges are located at the folloeo3,cgy*it7.r v 0 ym+q dysi0wing positions: Q1 = 2.00 mC at x = 1.0otc7yer siqgdm0 +i,y*3 0.vy0 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 point0ze;i n q 6ubbm939kai 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 tim 39ai kbnqz9;0b eu6he 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*s m5m:knv) p+set3bp9s ;bmm); Q3 = 5.0 nC is at (0, 0). Whmb;bs )eskpt3 m5*mps9n +m: vat 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, 0.17kt;v6)dpf (gp1h hcgv0r 4sz0 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 67hhfv 1v0p; zp(t4rdgcksg) 5.0 nC charge?

  Three identical charges of 3.0 mC are placed atwlp)69vry4k k the vertices of an equilateral triangle which measures 30 cm on l)6w4 rpv9 kyka side. What is the 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 what jooqs81te/9t yvu5 2m/ )vwgq point, on a line between the two charges, would it be possible to place a charge of -Q such that the t2)v8o gsu9my5wjq/1 vq/eto 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. Where3 qhwnx p1)8nv on the x-axis can a t vw)8 n3hxpqn1hird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin q n+t)x2e;odtj vaw20 and charge -q is placed at x = 2a. Where can a third positivjt eov+t nd2w0x2a;q)e charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 vi m1 5v4zx 5a8j.z awob)do/o0fu f4cg. 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 )s48bueu l* 0 nbf,kt4q fty0battraction of a fixed proton some distance 0st b0f,u)nlt*y 8 b4eukfq4b above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common poino x; .pta ,5fovk5zzjl b691cht by nonconducting threads which are 30 cm long. Bov6 otk9,;z xhpboz51 clj5fa.th 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 oy9em6 +md ji5pf +40e. What is the magnitude of the electric fiel e9pm+imjyd5 6d at a distance of 1.0 m from the nucleus?

  What are the magnitude and directio:y v8(j3hjjt *3eyrffn of the electric field at a distance of 1.50 m f*r8: f(3jjfyj veyh3t rom a 50.0-nC charge?

  A 5.0-C charge is 10 m frok8rpj1i +anp/ m a small test charge. What is the magnitude of the electric field at the location of the t+pkin r1 /apj8est charge?

  A 5.0-C charge is 10 m from a small test cha(g;by02 jypv crge. What is the direction of the elbg2j0;yc v (pyectric field?

  A 5.0-C charge is 10 m from a small test charge+;j. ,.r e9a y/gneca ;tju eysi81gyg. What is the magnitude of the force experienced by a 1.0 nC charge pa9g s.jn e; a;g,ir/geyuy+et j.yc81 laced at the location of the test charge?

  Two point charges each have a value of 3.0 C anuxsm;li+ 2x3h k.eva.d are separated by a distance of 4.ex3aux.s hlk;+i 2 v.m0 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 +cx xdxq5 j)3lmark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fieldxcl53+dj xx q) at the 30 cm mark?

  A 5.0-mC charge is placed at the xvbk7,8;-2zgn zzxbx 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the e8b;zgxbkv xn7,2 -zzxlectric field zero?

  Two point charges of +tl mu2yqt x5/43.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betwetx45tuq2yl m/ en them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. 0d5pkv 4cih :win yb77The last corner i5iw:y7 dhcv n047bik ps 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 cornedvptg1yume q*/k (o24po a7/wrs of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC gv ed pomq(u/ wp*/14ay2 kot7at (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 placed in a uniforok0m+ ;; ks9zog6k fjsm electric field. What ikokg;; 90 sjoz6f +mkss the magnitude of this electric field?

  A particle with a charge of 4.*g 8,xapl vm1g v7l.a ooh1)th0 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 electric field of 6000 N/C pofutg ,t- . p6bkil(nf5gz qt+0intini0.p l5f,q6z(ttbng gukf+ t-g downward. 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. n bg-qx *)1+6iawzr9l6 dgyyzThe ball is placed inside a uniform eleryiwgaz x z1*9nd6 q+ -)yb6glctric 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 cha 00e9bhbtop w cb69qi7rge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the e9 ih q60cbbtow97pb0sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the s h llk i88okt40yc(x+gd1( buelectric field 6.0 cl(hudg 4+(1ycbk0 k8t8oxisl m from the center of the sphere?