State the law of conservation of electric chargen cklhio0 2/f+.

  Is it possible for t ssy6:ss wx*6-;deihiwo negative charges to attract each other?

  Is it possible for a positive and a negatig68h)3wzbq ix6(r ejdve charge to attract each other?

  A glass rod is rubbed with a piece of silk. 8p7 c*/1 a 9mrjys+th3o rqklw During the process the glass rod acquires a positive charge an*y1rca7 9/ltwkm hj8 sr3op+qd the silk

  A proton carries a

  The model of the atom 6h4zkfpe2 fi ++s/xilshows a

  A neutral atom always ha,odc -q,)byo3fx. jcys

  An atom has more electrons than protons. The atol8-uwo :pjd47qncj * em is

  Materials in which the electrons are bound verpuup3 lph,9 f0y tightly to the nuclei are referr,fpl 0p9u3hpu ed to as

  Materials in which the electrons are bound very loosely to the nucl o/e5lh0*f wccfw8bvw5- p8rcei and can move about freely within the mch5rlw cefw5*f 0b/-88 vwocpaterial are referred to as

  A negatively charged rod isi 9elz4ox5hae90)k bl;im a.fg7le9p brought near one end of an uncharged metal bar. The end of the metal bar farthes9m;oi )7lkf5lgp0xe liab.e94a9hez t from the charged rod will be charged

  Sphere A carries a net positive cham oel2+fwxy9gj 3gue 0u,0h z.rge, and sphere B is neutral. They are placed near eacyemj .2 9+o0 ex,0hwfzulg3ugh other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positively?dq6f9vl,4f g k

  An originally neutral electroscope is briefly touched with a positively charg0ulb:2m.w9 ,dxw 7 sb)vtbjqoed glass b29,s)xbqtjw u:7mbw0 lvo .d rod. The electroscope

  An originally neutral ,a nwj 6946v77 bo2cbcemypjn electroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is j7nje b7av69w2 yoc m6,4bnp cremoved, the electroscope

  A positive object touches a neutral electroscope, anedofk4i.,jz; dr*c v,zx,jw 5d the leaves separate. Then a negative object is brought near the electroscope, but does no e,f*kr4v z,w5,;d xdocijzj. t touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated t(bmplh 1/u0b hable. 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 ball, strikes the first ball, and stops. The first ball rolls forward, but does not touch the negative object. (m pbb10h lu/hAt no time does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of thwd aie0j2zi46e Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first cha( jdl t.z9js1 yh2stqblg108vf- (ccjrge is larger in magnitude s(.c8tc19(lt0y hjb fs -1j gj 2vqzldthan the second charge.

  Sphere A carries a net charge and sphere B is neutra.5nio*5m r-27ha jmhjqqecr ,l. They are placed near each other on an insulated table. Which s.a 2r j* mm5,-7hoce5qhni qjrtatement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain forimk14cv9mngis q/0 j 9ce. If the charges on both objects are doubled with no change in separation,919q/0jmsg nmcv4k ii the force between them

  Two charges are separated by a distance d and exert mutual attractive fo,zl f0d )1i czd*w7janyqf*38ik j hc8rces of F on each other. If the hwfkc) afn8qi8d 0 ji37,*l1yzdzc *jcharges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with as5 vq0ygahl 8gg)ss( g4cgv ;+g2.abd 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 r0gs4gygb(la 8q;cvv .hgsa+)gdgs5 2educed to one-fourth its original value? The force is now equal to

  An electron and a proton areq0-h zcug(*y t separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a secon g0-(z*h qtyucd electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. d86n+u b:yoq xmr-s8i What happens to the magnitude of the force on the first electron if ao68i+- :d msrxyq8ubn second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whaj9dpn)q q,cx8ln; li)..wpcu;c f j 5et happens to the size of the forc.5p lw).p;cfjjl)unc; x ncdiqq,8e9e on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Qtt( :*wxt5lxh 4qenewfj* e52- auh8b is placed 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 the positive charge at the center of the squa5j hbttf*te5w*84q-x nwxl( : eeu2hare?

  A point charge of +Q is placed at the centroid ofw.8wep kf7(k z an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts on it. What is the makw8ke p.7z(fwgnitude 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 g-j qg7ho96*uocopjlf (4w- ar;* gx gis not a vector?

  At twice the distancec3c 5e/h/ei+zqgs6 jc+dq w8a from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a nedw*o5h9a qo,xet*n o)gative and positive charge aoxh*q*), a twnd o5e9olong the line joining the two charges?

  Is it possible to have a zero electrihywwj95d-r.1wmvr k5h rs5a2z uv-)gc field value between two positive charges along the line joinin59s 2av )dwwzwk.ryh-5u 5 rm1rjg-vhg the two charges?

  Electric field lines near psitive poi n-wc ccmi0s bqd8p,2/nt charges

  The electric field sovixm8r, 0y d0hown

  Can electric field lines intersect in free spacewzc jlw; noc)ev0 c.)-?

  A solid block of metal in electrostatic equilibrium5kbkc9c6dfg+8 o9cy6j c8. jry9 nm gx is placed in a uniform electric field. Give a statement concerning the electric field ind9 +crnyc.8gcb kmg y6kj9cx8 9f5j 6o the block's interior.

  If a solid metal sphere and a hollow metal rgd3j e0zxd8v :. s6ra4*vfehsphere of equal diameters are each given the same charge, the electric field (E) midway betwe8.e jg0dva34xdhsrrf6: *zv een the center and the surface is

  A cubic block of aluminum rests on ab*s.rg p w0rbz04)x ro wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's t sz 4 o*rg0bx.b0wrr)pop surface?

  If a conductor is in electrostmg.e+h .o5d8zccb ld8 atic equilibrium near an electric charge

  A positive point charge is enclosed ina1-cu 2 pwnm9m a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directlap12-cw 9un mmy above the hollow sphere has

State three properties of condw r;q.vg z8)qductors in static equilibrium.

State Gauss's law.

  The charge carried by one ele j)jj9 gq6c9vlctron 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. -g35y c(j-b p)t y,qcqnmedf : How many more protons than electrons does thi j(-e ,53yfcc)y qqb-gp ntmd:s piece of plastic have?

  What is the charge on 1 kg y z5kmoxip(85of protons?

  An atomic nucleus has a charge ob6 ek pr;(d).6tzktmd (,r glgf $+40e$. 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 charge0 4gs x1mh vw5 n4 ycpku3hegkyr9xv2j-; q/(z values of 2.0 and -4.0 mC, respectivelhy2rx0-v9hyws1e qv(; 4/k3n gpg4jmuk5xc zy. 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 them is 1.0 wg q7ywkf6 7s-6u y+wxN. What is the magnitude of thw76gk wysy76u qxw- +fe second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are thepuyh+)2.dhew sj*t6 i y?

  The force between a 8m ir cc f(fe/s 4/glvxza5;s1$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exp ,;4 9h8 er1ps xbnjcn7mmix-aerience a 1.0-N force. If they are moved to a new separation of 8.jirec-hx1n 4;m , 9p8msa7nxb 0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are phzsrngvfqj)6- ,5pe+5hk / a nlaced on the x-axis. The first charge ishpv g)n-+qre ,hfj 6 s5na/5zk 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 charge at the origin?

  Three point charges are placepnc1x fbbrs u .a rn/e6:/-gn+d on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the righ.ng/ rau/en+fc:p -x r sb6bn1t 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 locc gyat2 0v12yp) bq(b;9fqoeo ated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC ato g2pv9y(b;b0)2eqy o1atqf c 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 poi diicv/crv43-c,j ji: nt 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 plac4-i/jj, ic:dv vci c3red at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at -ah98kzcw 2jf8t sw:u (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.08:c-8 jauwhk 9wz2fts nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.108+* crsi.:xal7mnnu b m); Q3 = 5.0 nC is at (0, 0). What is the direction of the n +xc.um* i8lsrban:7 net force on the 5.0 nC charge?

  Three identical charges of 3. pc y -ecxgbpk:v:7;t20 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force-p2by;tk:cc7xvp g:e which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separah4baibjqp7;8 y zy +3)ojcuj0 .snzy9ted by 3.0 m. At what point, on a line between the two charges, would it be possi3icz );ybya b09s8ju pjoyzqn7.j4 +hble 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 =v7*0jwuvp fmryv03 1g 4.0 m. Where on the x-axis can a fuy 1*gv7pv3 wv0r0 mjthird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed pp owbwe6/27b y6x,g n4eyg +wat x = 2a. Where can a third positive charge +q be placed so that the +yweypbgw6n47ox/,e gbw6 2pforce on it is zero?

  A copper penny has a mass of 3.0 gc 82q*2h sb cbvv7cd(b. 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 bug)klvdy4 7s, y the attraction of a fixed proton some distance above it. How far above,)7vgk sd4y lu the electron is the proton?

  Two 0.20-g metal spheres are hung from a commonh ) c/aim1ggm)v(;hdv point by nonconducting threads which are 30 cm long. Bo1m;)ca vvig( d/hhgm )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 of +40e. What ixj68x:st) o oas the magnitude of the electric field at a distance of 1.0 m from t8 o6ao:jx xs)the nucleus?

  What are the magnitude and direction of th27bc.k/d4- nj-5gdglcl pfn5x8pj mhe electric field at a distance of 1.50 m from a 50.0-g kldpg-2xfch.4m5j-8n7 d n lcpj 5/bnC charge?

  A 5.0-C charge is 10 m from a smallq t) z. j:oxu387omrrg.nlj ;c test charge. What is the magnitude of the electric field at the lj q3rrot:7jcg;u o8.z.) mnl xocation of the test charge?

  A 5.0-C charge is 10 m fr4p zyx gvo.9e1om a small test charge. What is the direction of the electric fv4o p.eg1z9x yield?

  A 5.0-C charge is 10 m from a small test wk 7fhi40 5yowcharge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chah 7w5ofwky0 i4rge?

  Two point charges each have a value of 3.0 C and are separated by a distancem,nmhmc2b5u 6g3*ol i of 4.*,ml 5cnbg3iu2 mmh6o0 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 mark of a meter stick and a t;vfh/k .ivz*-4.0 mC charge is placed at the 50 cm mark. What is the electrtvf hvi /;.k*zic field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter e qz 2;bj9ry.istick 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 electric field zej.;qb2zye9 ri ro?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 an3o- dc83qkua hd x = 0.20 m. What is the magnitude of the electric3hoqd-3ua8c k field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of si6sc i*g7n1) k,m8bhf unf fd2fde 0.50 m. The last corner is occupied by a -3.0 m*nc)6ifgn78hsm,f1u fdbf2 k C 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,z 56d2jjjx/5 zby x)vw,tcue at the corners of the square as follows: +4.0 mC jjux/, 6yvwzbj ,2x ed5z)5ct 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 at the square's center?

  A force of 10 N acts on a charge of 5.0 mC wuqe )43/puep lhen it is placed in a uniform electric field. What is the mag 3)ee4l/ppqu unitude of this electric field?

  A particle with a charge of 4.0 mC has a mass ofy*uu:j; utt i8h/6iaq $5.0 \times 10^{-3} \; kg$. 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 elec8 a,zy2f62aysjmc 3 zxtric field of 6000 N/C points yz, a a86zc3mfyx2j2ing 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. Thk;clxaozkxzc1o13-8 e ball is placed inside a uniform electric fiel;cz- xlok azc8kx 13o1d, 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 ch4da,f+ d7:-stz2ozl-w usw3z ,b tzybarge of +2.0 mC. What is the magnitude of the electric field 5.0 cm 2odsw: zftwyt3 b zs- b+d7lz,a4 z-,ufrom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the,jzg zbn(gvtz b1sr gyocz+ 04 /+l.g. electric field tnb4r0(.g+jb.1szgo/zc ,v+zl z ygg 6.0 cm from the center of the sphere?