State the law of conservation of electric char m v0s,)2adpvrge.

  Is it possible for two negative cag+uv-tnceb7 e5 oe46 wmp 95charges to attract each other?

  Is it possible for a positive and a negative charge to attrackzao 4osjpvyk9v,b .1+jr f50q0vh :os i at3/t each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rodn-ezwgjesm*j y7 5+am 0-3h cf acquires a positive charge and thejag-+sz hey jm*cf3wm -n057e silk

  A proton carries a

  The model of the atom shows a(u:m3mg h-of0tu 9kxm

  A neutral atom alway*ub8( .npoexp s has

  An atom has more elecr fs 9anu6e+8otrons than protons. The atom is

  Materials in which the electrons are bb0aeh(km: , hdka5w 8zound very tightly to the nuclei are referred to wdaz mhhb0 kk:,85 (eaas

  Materials in which the electrons are bound very loosely to )uh3pzr - lex*the nuclei and can move about freely within the material are referred to a l)*u-ehzx rp3s

  A negatively charged rod is brought near ,.)eijyjs eprbio,:z c:a, e1one end of an uncharged metal bar. The end of the metal bar farthest from the charged rpo abe e)s r:.iijcjye ,1,z:,od will be charged

  Sphere A carries a net positive charge, and sphere B is cw8iv+z ,z o ncf gs5n893(ssdneutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that in3 (f9s gz+8v5wcnss8zd,o ci s grounded. Which statement is correct?

  How can a negatively charged rod charge 5;7glk3 or kpu3 8mlvzan electroscope positively?

  An originally neutral electroscope is bjq. sz)i+(srevsmj( ay5 ; fn7riefly touched with a positively charged glass rod. The electroscos5rz()eji(7 n vy+sas q j.;fmpe

  An originally neutral electroscope is grounded briefly while a posit qet;0+hehb h5ively charged glass rod is held near it. After theh h ;qe0h5e+bt glass rod is removed, the electroscope

  A positive object touches a neutral elebp /sefw 2i-l f.1dn0gctroscope, and the leaves separate. Then a negative object isp.- 1fbwsflei/n20gd brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulateyyres2+ o xvf3sve9*)d 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 b2vyx)*9yrv ose e3sf+all, 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 constp wnzsv5k ,-rz4wo m, ).v4ftlant $k$, which appears in Coulomb's law?

  Two charged objects are sepabpvd, ((d hde i)e1y6 hbl-wu;rated by a distance d. The first charge is larger in magnitude than ph ;(-1ludw6,vdb ee h b)di(ythe second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed neq wb1ar0qrnz9 6gh dc25kzjt n02 /6mqar each other on an insulated dnqj0 h1b6z9atr gnk rw q 620/2qmcz5table. Which statement best describes the electrostatic force between them?

  Two charged objects attract eachu;wge ok(n4 v1 other with a certain force. If the charges on both objects are doubg n(14ok;uve wled with no change in separation, the force between them

  Two charges are separi9g;i7ya rt p vd662n xh9ttkn5b 8q1nated by a distance d and exert mutual attractive forces of F on each other. If the chargnx yvhap dg1tb9t26i;56k8tq 9innr7es are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens ta);r5ee+ 0 derty4ni yo the force et ny0yidrr4+ a) 5;eebetween 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 force is now equal to

  An electron and a proton are separated by a distance of 1.0:kve v-g*9:fyaq,o gh m. What happens to the magnitude of the force on the proton if a second electron is p 9g- vk:*gyfv h,o:qealaced next to the first electron?

  An electron and a proton are separated by a distance of 19+rduxz o)jt 1r4*fr8 gdi lh5.0 m. What happens to the magnitude of the force on the fir)1fl r9r5*h ud8o id4zrxtj+ gst 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 happens to m/mnw e8s( tz/the size of the force on the proton emz/ (/snm wt8if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a secoi c b zckisw k+8q:bt0nup+:va6qf0*,nd 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 ofnki:b+q wu v8 c*+ iqpctbs 06k0z,:af 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 trialg/xq6ti hp 61ngle. When a second charge of +Q i/6i1pxh ltq6gs 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 followin-q vs1ba i hlz/k.6damg(bh);g is not a vector?

  At twice the distance from a point charge, the strength oh-*j i-onle,j f the electric field

  Is it possible to have a zero electric field value between a negative (7;fnmm v 1 u*pm5.l dxrw1zmnand positive charln7vndf mwu 5p1.m1(z*rm;m x ge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positivec1n i n8pm14rz charges along the line joi1znn4crpm1 8ining the two charges?

  Electric field lines near psitive pvti d1l8yepn/ivx )0:oint charges

  The electric field shocdlj30sq p0 73 ,t. pcvkpjob0wn

  Can electric field lines intersect in aigur5s14: b bgm.vc8 free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elect9;k+.fcvjoifmo4 l r* mrhr4 .ric field. Give a statelc o+i.v9f; *. okjmhfrrr4m4 ment concerning the electric field in the block's interior.

  If a solid metal sphe,ph z1tk :*lidre and a hollow metal sphere of equal diameters are each given the same charge, the electric dikh ,p1:l z*tfield (E) midway between the center and the surface is

  A cubic block of alum4puh6b/n ( 5mis ye9rao8mn-hinum rests on a wooden table in a region where a uniform electric field is directed straight upward. What m46 ra9 ( h5 inoepn-m/bsuh8ycan be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equif ;fs6 3 x8hknvg0a7hklibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic fvw,eq i1ua:;.f (btj sphere that is grounded. As compared to the ca 1w,itffbajque(:v.; se without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductorsnby y7 e546uc4 eqxt;v in static equilibrium.

State Gauss's law.

  The charge carried by one 9dn * k o)*hvqlkl,6xoelectron 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 mz r)7ggj8cfcqq5vy. 7u; jt/ more protons than electronfjgq)jztv/cug;5q.7 c7 r ym8 s does this piece of plastic have?

  What is the charge on 1 kg r,;uk *+km sfsof protons?

  An atomic nucleus has a char +r yh/fjay/7;od9zg4wt /iiw 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 and -4.078 o xf/m b-j;cceq0at); cdtpa ;6zwz mC, respectively. What is the magnitude of the elec; a ;d tpjw7mtcz;c/qf6b8) e -xczao0tric force between them?

  A 1.0-C charge is 15 m from a second charge, a8j jo7;( .s n 2vbv+bsgv)k2w, v,(aulncjupind the force between them is 1.0 N. What is the magnk)si;2+nbojv 8 jj2(vgw7(uvvap.ns, uc ,lbitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are the hsf5e/jhdin+7-b,r f8s 5tuqy?

  The force between a ixo -:zkm 85ym$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experien(1seo qpyod)7neuvp f*8u :b.ce a 1.0-N force. If they are moved to a new separation ofo(1pvf) o7undp *eeyusq b. :8 8.0 cm, what is the electric force between them?

  Three identical point uj/sq wh6 da+s)5k7 ljcharges of 2.0 mC 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 106s jauwql +sdkj h5/)70 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 5, 4zlwpwo rnql;lk8i+1i i 1gx-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 theipolwigqk8 +wz451ln,i ; 1lr electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following podys0engn r2jk3;v gr9p29 bu 8sitions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x 98;j2dpuygke092gsr n3vr n b= -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is plac-r drng7k; hundexic 58;n5b(i,pgu4ed at the center of a square, and a second point charge of -Q is placed at the upper-left c5 x;n- , nrcuheg8rip k7 45uddg(n;iborner. 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, 05fsr,yhv+c1 jwc l7 tk7,n8ld .10 m); Q3 = 5.0 nC is at (0, 0). ylw s81fc k,v+ t5dj7c,nhrl 7 What 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, 0.10 m); Q3 = 5.x v7p+7t*b vqc0 nC is at (0,*v v+bq7cxpt7 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verticesbsun84l tk5y+ of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the ele5u+tsnb4y lk 8ctrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which ar9xw2 o4q a e.wg j,eur6dek0.ue separated by 3.0 m. At what point, on a li6q x49dwkr u.. wej egeu,0a2one 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 charge is at x = 4.0 m. Webgappv 3yg 1; -.l)huhere on the x-axis can a third charge be placed sg-luhap. b1gvy e)3p ;o the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where czricos4o7-+tk7 yfy 1 an a third positive charge +q be placed so that the forf4o7z k7y t-ic+1y sorce on it is zero?

  A copper penny has a mass of 3.0 g. Ap tmg22a/z: +bci l7cg 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 by0qvxl (jtzeoh9n,o 2: the attraction of a fixed proton some distance above it. How far above the electron is the 0, z (et: hvqo2xo9ljnproton?

  Two 0.20-g metal spheres are hung fro.d, k2ljlgv5emb):pg m a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart unt)edjg 2:v,.lm5gb plk il the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. Wp agc y4f* cnk+ru960fhat is the magnitude of the electric field at a di0yp 96a*ff u+ rcck4ngstance of 1.0 m from the nucleus?

  What are the magnitude and direction of tu1slvx t)7br1 * ir-cthe electric field at a distance of 1.50 m from a 50.0-nC charg u7bcvx1r)ti* 1rtsl- e?

  A 5.0-C charge is 10 m from a small test chf u7u( o glmx//25ifqkarge. What is the magnitude of the electric field at the location of the test chf g 5xmikfo2/u( u/7qlarge?

  A 5.0-C charge is 10 m from a small test cha* jkm gk.2;:x. 74ntlznjyoxqju )b v7rge. What is the direction of the e*yq x2 .bm jtgx.4 lo;j7knuzn vk:7)jlectric field?

  A 5.0-C charge is 10 m from a small test charge. : nok- z.x):lpufw :v gcl)lg,What is the magnitude of the force experienced by a 1.0 nC charnwg: l lvg-.pf)zok),cxu:l: ge placed at the location of the test charge?

  Two point charges eapcrt 7,0hp(fcrfm1 6f ch have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at af1ht(0r7r pccmff6p , point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of aa6 o zth6t.3 c*ms0crc r+b8pg meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fi66*s+ oc8gttcphc3 rzm0ab. reld at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stin05epixxbg g) qox t .7z2+-mnck and a -4.0 mC charge is placed at the 50 cm markin7z p.ox)mxq nb5gt e0-+g2x. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC a.ep b6ai.(j7y 7toma). gnjugre placed at x = 0 and x = 0.20 m. What is the magnitude of the electric fieldy ij nt7bjmag.u ( )o7ape.6.g at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squtme1ju+j y 0-care of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Ftmj + ej-cy0u1ind the electric field at the center of the square.

  Consider a square whib7n-ps ec m5 qbxr-ra, asy8)/ch 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); qnp5abc7ae, ms-rsx8 r/) yb--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 b0knh s0f2koz8 8j+cpcharge of 5.0 mC when it is placed in a uniform electric2z 0oncksp8 h0f+ k8jb field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC 0;::ros.eanep.9 y pg.ryx4 qum5izphas 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 i6acjp jj)0m .qrlj(pjvt: a0+n an electric field of 6000 N/C pointing downward. What charge mua (cm:lq)0jrj vjppt jja +6.0st 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.hhez 3iolksi6;, ge0( -xyk9k The ball is placed inside a uniform electric field, and is suspended against the fore; 6 kz39,kihlke-0hs yxog(ice 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 the s7 k;n;)rihvje( yy9omagnitude ov ; s y7j)(or9;iyhnkef the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the ed;9c u m3pu3vj /jv2vhgkpl3 bco2 u11lectri9mp g ;cbuvdjpcu 12ho21 3kj/v33lvuc field 6.0 cm from the center of the sphere?