State the law of conservation of electr/k 5.:yt kx dxbctsj6/ic charge.

  Is it possible for twa33t9,ft4x rdnht0tv)sh 5jv o negative charges to attract each other?

  Is it possible for a positive anarqm3i j0 6c8ud a negative charge to attract each other?

  A glass rod is rubbed with ab3.rtnt 6vwa1 piece of silk. During the process the glass rod acquires a v. 1 an6tbrt3wpositive charge and the silk

  A proton carries a

  The model of the atom show xydr4j0qwyr6-7 y qer9*uv/r. i/pggs a

  A neutral atom alwayslf( ,zq *)ozpt has

  An atom has more electrons than protons. T /9-r(v,.q v euirezu;dada,o he atom is

  Materials in which the electrons are bound very tightgl/ o0ue5ysvqn3 133u8fly mtly to the nuclei are referred to a5 st qlmyulvo0fn/y 3g8u3e31s

  Materials in which the electrons are bound very loosely8 m30ar)v kwsc to the nuclei and can mov )k8wavc3rm0 se about freely within the material are referred to as

  A negatively charged rod is brought near ccvob37 n (/7*e7lcd (fr xd0et8gxfq one end of an uncharged metal bar. The end of the metal cf7tce8nvd 0cl73g /*(boxfe(q d7rx bar farthest from the charged rod will be charged

  Sphere A carries a no4;ng7ufsx z0 et positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire t74fuz ;g0nxso hat is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positively1 2 ke7 q7xuptxy(ibs7*skj y7?

  An originally neutral electroscope is briefly touched wimdi;u lq/pa, 8th a positively charged glass rod. The elm8d i/ a;lupq,ectroscope

  An originally neutral electroscope is grounded brieus2t 9nsiw+;bn.z dlwf(1p2l fly while a positively charged glass rod is held nn2nu2+zsd91 f;b.l wlwisp(tear it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separaterkyge28zm7g:nn o i.7. Then a negative object is brought near the electroscope, but does not toucm gi yo8zg27:e7.nk nrh it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neuticc+/nal35 j 6dk3ewka) mm-s ral metallic ball rolls straight toward the object, but stops before it touches it. A second ncn3c5 -mkla /m3swje+)ka 6ideutral 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 o vtk0zg):fo:2 hb9q1u7q m veif the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a di g8;5;gjbhvcd ozfb9:stance d. The first charge is larger in magnitude than the second chag8bd;vboz5 ;c:g9 fjhrge.

  Sphere A carries a netdr/sh j;c;bhr)g*g.v6.,ekka j71swbru f:i charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force betwee:cjs ;swgd,e;. /k k7rja1r6)bvufr.gh* hbi n them?

  Two charged objects attract each other with a certain force. If the charges on 0ry hs8rs0khc4v ,5mc both objects are doubled with no change in separats4mc58crh, 0yv hskr0ion, the force between them

  Two charges are separated by43ml t( 4rt.+ n+cgslekq-v/mc ww8j+vyp x i5 a distance d and exert mutual attractive forces of F on each other. If the charges are sepsj5q-+vyn3wp +4x l+.8m ew g( kmrcc vt4ilt/arated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other yz:k2ee4 *tmk zl flge9j6pj990p .z8gewpb9with a force 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 is reduced to one-fourth its original value? The zzwm 9p9. ylge*64:pt89 ek 0 e2p9zbke lfgjjforce is now equal to

  An electron and a proton are separated bl1 uml 1n ps:5dm97qely a distance of 1.0 m. What happens to the magnitude of the forcn d:esl7lqp11umlm 5 9e on the proton if a second electron is placed next to the first electron?

  An electron and a proton are 98(eks,vj m5i dj8frpseparated 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 the proton?9k5i8d,(mv sjep jf r8

  An electron and a proton are separated byz(k-1-p .uc ih3 j ria)ryuq(i a distance of 1.0 m. What happens to the size of the h( yca1j(.ki 3piuqr z- ri)-uforce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is pla.qf k0d,:o uf+hfy0 3svn af0oced 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 charges of -Q are placed at the other three corners of the square. What is the magnitude of the net electrostatic force acting on th h0oo:,kvau f+0 n0yf3f q.dsfe positive charge at the center of the square?

  A point charge of +Q is placed at the centr6rh,b y0 eis8qz26kue wr;7igzlb+ ;joid of an equilateral triangle. When a second charge of +Q is placed bhgj8k rq+z6il; 6bee0;is,7wy zu2r 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 is n1--7pqgun5f ; k8qay4ah-tz(no k iglot a vector?

  At twice the distance vbmed1 )8 ulv/from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value be5o(b(srlwz*a o)d;s,k k o c)ktween a negative and positive charge along thel( aowksk*srz(ko o) b;d c,5) line joining the two charges?

  Is it possible to have a zermmm w3yy/+lro6i ;if* o electric field value between two positive charges alo /;m* io3y mif+ly6rwmng the line joining the two charges?

  Electric field lines near psitiv6r i mn7.e y70)jn4u gz(tcoihe point charges

  The electric field shown rlq;f77cpl+y ;-s nvb

  Can electric field lines intersect in free spat)vs 5g wn.txul-g6e8ce?

  A solid block of metal in electrosta1;ss8 he. nvp2qb 1wyrtic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the blosn1eq ;w8rp sb .vy1h2ck's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each ek a 0m eh)sg77 j: +ct6m9kuqjc(,tifgiven the same charge, the electric field (E) midway between the center and thefum 7e + hs67tc(ge0qc,kta:jj) mik9 surface is

  A cubic block of aluminum re, faqgg,l:yqgnu7g3 7dw ;zo(sts on a wooden table in a region where a uniform electric field is directed straight upward. Wh 7q u a,odzyqg7g g,fw;n(:g3lat can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriu5avi z(s i dypmaf*90-m near an electric charge

  A positive point char,7z xb: g00jay(gev b9;k;zdpow7fjege is enclosed in a hollow metallic sphere that is grounded. As compared 0:0bxe(fzy p7o jazgwj9k;b, ; 7 evgdto the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static1ns(,d6ly oo9eymldo :hv+z4 equilibrium.

State Gauss's law.

  The charge carried by one 3 n h(vf)ae.u9.uhzf celectron 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 mm-duh cp-9q tf*o/ 6fyore protons than electrpm *9/--6qt ufocfhydons does this piece of plastic have?

  What is the charge on 1 kg of p*r wmod(09 udcrotons?

  An atomic nucleus has a chargejprb d31 b3dv7t4a/ok,,vp ii 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 sle q)ngup 79-s)s-ay, have charge values of 2.0 and -4.0 mC, resuqes7sp )ngal- -y)9 spectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between thevu;j xg/ :aiai/;bc0 lm is 1.0 N. What is the magnitude of thel xg:;i0/ j;ib/aa cuv second charge?

  Two 1.0-C charges have a force bkg( j:lc0 wq1aetween them of 1.0 N. How far apart are they?

  The force between a mk pd3)vd1kgs cx*yvkf(31 5 s$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, i*l.nyp9qy 0rexperience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what n *q.p09ryyil is the electric force between them?

  Three identical point charges of 2.0 mC are placed on th4u+sinhcr+f s6x +g/ae 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 electrostatic force which acts on the char+s ausx4+ grchf+/n 6ige at the origin?

  Three point charges are placed on the x-axis. A chb3 r):0hh uub v-im3vparge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, anp3ih b- 0)vv u:b3hmrud +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 positions: Q1x0irnco,(1 x o oq;ct. = 2.00 mC at x = 1.00 m; Q2 =.cion ; o01cxxotr,(q 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 se5q(0rvvvn8mb cond 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 placen(bvv5vr8q 0m d at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0,40-if ynuoz a ,c seu.qq3i3a8 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the q aczqa,0n8s e3f.43o-i iuu y5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.sm1qdqev3 jf 3ae:(x q3v+el +10 m); Q3 = 5.0 nC is at (0, 0). What is theq +mvsv1:3+qfq el3a( dxee 3j direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are plac- ,h rti ixpt6;kaf(syx n;w5(fjc 0-jed at the vertices of an equilateral triangle which measures 30 cm on a sidefj ;i5-6,r(ykxfc( ; w xap-nthsijt0. 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.o hvhzk418e9w5rty+z0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electroo9yh 5 1tez4rzh8vk +wstatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at t; zy:.)y8bbkm3 5jjm;ccpm e x = 4.0 m. Where on the x-axis canp.mk;b tccm :j)yzmye3j5 ;b 8 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 +xni, v*nzg3 7r 4 bv6mmnf)lyat x = 2a. Where can an,i6frbm yn+x7n*vz mg4 v)3l third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A p aicou+6548iqizj( 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 attractiavw1w62n 2cvz on of a fixed proton s1ac62zv2vnw wome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thread8bbqvo i/ 7m)ap 1xs6ys which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle bemp i8qb7abo16)/ xsvy tween the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude0m9cl qhx)4lo of the electric field at a distance of 1.0 m frmx lo0hq94)l com the nucleus?

  What are the magnitude ang lg2 :)ejx*gjd direction of the electric field at a distance of 1.50 m from a 502: ) *jglxggej.0-nC charge?

  A 5.0-C charge is 10 m from a small test 5me+mo; i2.z rbwf5mp charge. What is the magnitude of the electric field at tm2;+ f5 bwei5pz.mrom he location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directi,)dt* m) u 1q mbricjun;qk-v3on of the electric fieri -dv)uq,k)3cq;t1*jbm umnld?

  A 5.0-C charge is 10 m from a small test charge. What is th1j :h -zp2kcple magnitude of the force experienced by a 1.0 nC charge placed at -hk:zl jp12cpthe location of the test charge?

  Two point charges each have a value of 3. ,p9v,avi7-v tz/l xzv0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between th -z zi,9,tvvvl /7vpxae two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0qi8 ti+v69i75kld)sapwq/ 9ymx 2mim mC charge iymi lqa9x 8pv/si9 6 ii+5t)qmdw7mk2s placed at the 50 cm 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 s dr fwl f0;;p +p982.cqgnhzcrtick 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 epc+. dhc ;f0q g2rnwfp98rz; llectric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and - dw,zr15f frjx = 0.20 m. What is the magnitude of the electric fi wd1- 5z,frjrfeld at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squar p1v t/il:sv(xbf 0u7crkd43 .utn7 wce of side 0.50 m. The last corner is oc7 :d7t3rkwbp u.l /v1 4nxc0 tc(isvfucupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square whic5v 9u2f.,ydqci) afue*jft p 8h is 1.0 m on a 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 magnitude of the electric field at2cpu f8fiyj *d.tev ,a5 9q)uf the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed* ofd.g( ep;ek in a uniform electric fie;fgp(* kde. eold. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a massvm.cq-g30d,he zw:b w 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 mkgtrt( 1g92c0ey n-d8h*k ywis placed in an electric field of 6000 N/C pointing downward. What charge 1 (t9grkymewn2 tc kd8*y-gh0 must be placed on the ball for it to be suspended?

  A foam ball of mass 0 0vsfge r6boo 6kq(v);.150 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 d v6ebo6fko)vsq(;g r0irection of the electric field?

  A metal sphere of radius 1j5 q;;yww3sej m7+uq* fk7wj gu9nu5 a0 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the spwwu* u3m5;9 j7 a ;7fgqy+sjq je5wuknhere's surface?

  A metal sphere of radius 2.0 cm carries a/ew a.(7ogq48v,fhr0mf7rfi w;s.ontnl i0 a charge of 3.0 mC. What is the electric field 6.0 cm from the center/(7;mif fa80ios0qv.rn7 ,4ghwnfw a or.lte of the sphere?