State the law of conservao.hs5m6fa, bction of electric charge.

  Is it possible for twvv q1z8n4-6-c nhz zluo negative charges to attract each other?

  Is it possible for a positive and a negativs*bgz cf, 7+7hvse m(fe charge to attract each other?

  A glass rod is rubbed with a piece of silk. Dmiyj0(7 lwat4 uring the process the glass rod acquires a positive charge and the silti4j7ay wml0 (k

  A proton carries a

  The model of the atom shows ycnxrr24b(dy+q1r 8 .icm 0tna

  A neutral atom alway+f-h t*f+,ds flupm//rmlm 9 ms has

  An atom has more electrons than protons. The a7lhj ibi ue*m,q47a1atom is

  Materials in which the electrons are bound very tightly to 30;ezr8u :zgbq9np,g h.blfn0y6g wq the nuclei are referr 6fbrw;.qu0nl3h ze,g:yg98 bp0zgqned to as

  Materials in which the electrons are bound very loosely to the nuclei and can moxts4(tvgvn81q h wr:- rnv 8(hgx 1 qts4tv:w-ve about freely within the material are referred to as

  A negatively charged rod is br 3a:h80e4i b7qigvzof ought near one end of an uncharged metal bar. The end of the metal bar v8a7 :ziog3qi4fe0 bhfarthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere Bs2 jv t07bpy6t is neutral. They are placed near each other on an insulated table.yp 20sttjb7v6 Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope,vmo:vchsncqr-/1/ ,inqx: o positively?

  An originally neutral electroscope is briefly touched with a positivei7b9jui c, (pvly charged glcv j9i(i7upb ,ass rod. The electroscope

  An originally neutral electroscope is grounded brfyv9lmbpa, 3vq q)w0nw joq3bg -2 k21iefly while a positively charged glass rod is held near it. After the glass rod-vyvbq q fbl3g1j0,2 9pwq)k 23nomaw is removed, the electroscope

  A positive object touches a neutral electroscope, and the lyt0w p:rxg r)xy 9c5+qeaves separate. Then a negative object is brought near the electroscope, bupgtyrq 5ywrx)x+0 c9: t does not touch it. What happens to the leaves?

  A large negatively chx0(lq, og4 mekdf::ptarged object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls alonged tm(pk:x :f g,40oql 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 const7v..1hkzrvmpt : 0ophant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Tnf/0gh4fb r7k he first charge is larger in magrghbnf /k 74f0nitude than the second charge.

  Sphere A carries a net charge and sx:1cqf lyj9 laco++opmj+7w y(. s2sophere B is neutral. They are placed near each other on an insulated table. Which statemeno2+ slw19xo .oj:f+cma +j slyq 7(cpyt best describes the electrostatic force between them?

  Two charged objects attract /-ca .njrpebvw+g; 7e each other with a certain force. If the charges on both objects are doubled with no chana /-rwev7 bj.;cnge+pge in separation, the force between them

  Two charges are separated by a distance d and tyt3g n he+l08nlxli9k; 6y;wexert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?3ng8;lw ni9y+lk 60e h txt;yl

  Two charged objects attract,gfhh)-k x5ni each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and th ,i-gn )kxhh5fe 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 distance of 1.0 m. What happens tolq,z5j.6li mw the magnitude of th6m ljliz.qw5, e force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separateyq*1fxctr0/k wm:.q jb( .c/)ympfspd by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to thes:jqty )*. 0xpk1frmy/ /c c.mpqw(bf proton?

  An electron and a proton are separaxypp,n1a7y 2fd s00 t9 i,-kied8 icjxted by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m ypi 2 7ijktx,c090xspdd18e,yi a - fncloser to the proton?

  A point charge of +Q is placed at teofea4pqqt 8, yx/ u0)he 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 chary t/xofqpe,0au )e q84ges 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 cy9n :6b4 x7pvqtcq5 (rhfup-c entroid of an equilateral triangle. When a second charge of +Q is placed at one t cnf5qphb - 7xr y9vq:64(cupof 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)llgiao/ y2( q is not a vector?

  At twice the distance fror 7upjw8ct)gc y7 v8s;m a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and pos, i1rf0fer 5isitive charge along the line joining the two chsr,r51if i 0fearges?

  Is it possible to have a zero electric field value between two positive u4f;t d :o-qntcharges along the line joining the two charges?dnoqt;f4:-t u

  Electric field lines near psitive pe/k dmr /:rjq8oint charges

  The electric field sho)j4 n kh/s jq0zyks1+wwn

  Can electric field lines i.y nj j7dg2meo dj/7kijo c-88ntersect in free space?

  A solid block of metal in electrostatic equilibrip-d;woxm w.u vvf z 70p/iu+0 fzs+z+rum is placed in a uniform electric field. Give a statement concerning the electric field in zwm0r+fovwfz x/+ -;ds z u.vp0p+i u7the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamete heiq26:1 cadfmjx-)jb uj;0j rs are each given the same charg1a 2dmjqc x ;ejjhj f6bu0):-ie, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tableq7bcf 9h nefwc lx)m0u8:dq 11 in a region where a uniform electric field is directed straight upward. What can be said concerning the charge oxmq h 9ucefb1)c7w:fnd 18 ql0n the block's top surface?

  If a conductor is in electrosta)-gor c sgbu;7tic equilibrium near an electric charge

  A positive point charge 2g u8hq 5qjbe/ cu lt4rgpn)x:1 2m* rj:z/fapis enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field/c/ atfu21)z2ng5eqj8u4g hl jp*x:r p bq r:m at a point directly above the hollow sphere has

State three properties of conductors in static equej6(z .x7ps . tf n09p+jcljuvilibrium.

State Gauss's law.

  The charge carried by one electron ,9- gab-kgspqis $e = -1.6 \times 10^{-19} \; C$. 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 ma.u/xpcoml +.k eu kjq6x)e +i*ny more protons than electrons does this piej+x li o*xepcq+.6u/e.m)u kkce of plastic have?

  What is the charge on 1 kg5 mzc;3.hitbsf 3v l;e of protons?

  An atomic nucleus has a charge oq .3iiafw,-y :n(pwk3nyf5flf $+40e$. 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 and -4.0 mjqp-j8q uvjepd +/c4 -C, respeq/je 8qdvp +4pucjj-- ctively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and qu )hb*fx9 lexu6o90f the force between them is 1.0 N. Whb6*lu e9x0uxqo )f9h fat is the magnitude of the second charge?

  Two 1.0-C charges have a forcc: a/vps/mx jkfls1 ap5v.,m)e between them of 1.0 N. How far apart are they?

  The force between a e1wh :-: pp9n wjnat8j$30 \; mC$ 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. e6wxg /fjhzz,,n :-( atylk0 y If they are moved to a new separation of 8.0 cm, whatyw tjk6 x(y, 0falzhg:/n ,-ze is the electric force between them?

  Three identical point charges of 2.0 mCv, w,kg7mrgp4j ei/bep+r40f are placed on the 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 arb 4m,7gv/jerk ,r4pwi pg e0f+e 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 chargx:6ri7 ( mseaue 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 tairu7:me s6(x he charge at the origin?

  Three point charges are located at the fo+x o8krzk)/ nyllowing 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 m. What is the magnitude of the force on tho+k/nk 8)xyrze 3.00-mC charge?

  A point charge of +Q is placed at the center of a squkh u:v*4,hituare, 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 th:4hkuu t ,v*ihe 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 =/l2gt-er5 tu+6;x3mwva q huk -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of tm;vl+aru6 5e xwt- /t3uqhk2ghe 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 = 5.0 nC is ate ktv44vrlqwuytfb bc: /+es1k2n f ( 94k29si (0, 0). What is the direction of the net forceei(f9 4 bsn4ws :t /rvyt+elvckkk41b9q22f u on the 5.0 nC charge?

  Three identical charges of 3. u 8bfg, i4mf0yex6(ov4j n/tg0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the0gy6 (8j,4f4ne v f/mixbog tu magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, wh3ijda63yz :luich are separated by 3.0 m. At what point, :udjl33 zyia6on a 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 and1+t 3:hit8tnilt4dzs a +9.0-C charge is at x = 4.0 m. Where on the x-axis c4ni h1 t:sli+3t8tzt dan a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x 3dqo2.ow r7unri/ ht1 = 2a. Where can a third positive charge +q be placed so that the force on it is zt 1 2ond h7iqro3uw/.rero?

  A copper penny has a mass of 7uh;7-on ufdexnf e0 (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 dbdnw -: ;h( nigz:v:cagainst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the proton?d;::gbiw-(nzn v :ch d

  Two 0.20-g metal spheres are hung from a common point by nonconducting th, 1mu7) wrzmztreads which are 30 cm long. Both are given identical chargu )m 1rzwmtz,7es, 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 t 48wws,zw ,alo+xl8i of the electric field a,isaxwolw,8l8 4tw+z t a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fr 2rwog2xy ,q:ield at a distance of 1.50 m from a 50.0-nC charrw2q y,xrog:2ge?

  A 5.0-C charge is 10eja dm/ ).tmcebf /o0- m from a small test charge. What is the magnitude of the electric field at the locatio0)f doj-be t/emc/.amn of the test charge?

  A 5.0-C charge is 10 m from a small test charge. usbgpv :kkrew:9)zc+0 ig v); What is the direction of the electrig :wz +;ck:rvs )g) e09kbvupic field?

  A 5.0-C charge is 10 m from a small test charge. What is the magn7c1gs9jk 8, nq s)gafjitude of the force experienced by a 1.0 nC charge placed at the location of the tess1sjak 9)gjg ,f87q cnt charge?

  Two point charges each have a value of 3.0 C and are separated by a dis0 hr;d vha(g7ptance of 4.0 m. What is the electric field at a point midway between the two v(;dh7ahgrp0charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sso/1ln;lui. t f i4kx+tick and a -4.0 mC charge is placed at the 50 cf knixols l4;u+ .1it/m 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 meter nvg/iy b3mghrb* /2 ezi,+lcfx8hw6+stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the 3+ 6fv +giyxhw/hn,/ cg m le*bz8r2ibtwo charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at2 s/uzjufeoa)7 y6i/phoa *2sflq, )n x = 0 and x = 0.20 m. What is the magnitude of the elecq is ps, ul/)fo6yea)h 2z/f 2an7ju*otric field at the point midway between them?

  Three 3.0 mC charges are at the three corners o(ev02-pn)5j y jenxf af a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric e-jn0ype ) xnj5av(2f field at the center of the square.

  Consider a square which is 1.0 m on a,kf +a6gyaxa tj53)tg side. 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 magnfak )yg t3,aj txg56+aitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it c1 z0 jve,vt8xis placed in a uniform electric field. What is the magnitutjec8x1 ,z 0vvde of this electric field?

  A particle with a charge of 4.0 z*)qsrwxtlp0sli58i 8)z gf4mC 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 electrhh4 -unue-:.yiu pg / gqq3t(zic field of 6000 N/C pointinqu3:y/ ehihg(.z4ugn t--p qug 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. The ball is plac5xhbv6a h8y7 od;qd,.qsn+ whed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction8ha,.h q 76oqhnxy;dsdw b5+ v of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the yg3 +79f4zkf vmvzj op-+zdp*magnitude of the37-gvj4zv*+zymkof fpd+ z9p electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.k lfb 1kyon;-.0 mC. What is the electric field1-o kn k.f;ylb 6.0 cm from the center of the sphere?