State the law of conservation o-y mr f/m gm)ba7s-7abf electric charge.

  Is it possible for two negative charges to attract each opx; ng g1e+ikm0/c6 dither?

  Is it possible for a positive and a negative charge t wbsn151e;qweo attract each other?

  A glass rod is rubbej /-e k.; ivv0u/uy)m9ex nxgejw,,pwd with a piece of silk. During the process the glass rod acqui 9xpw-me)/vnv0uu,.k/,j;iexjy w geres a positive charge and the silk

  A proton carries a

  The model of the atom shpm.p qe9uif s k ug0z357s55tlows a

  A neutral atom always hv4sy)a jm 9iv3as

  An atom has more electrons tzcl9lu6 b f4oxu4f*bi.k/f b9han protons. The atom is

  Materials in which the electrons are bound very tightly to the nucleiwp 0taj54o e-q are referred to a5ewtp0q4 oaj -s

  Materials in which the electrons are bound very loosely to the nuclei and can m;b.-syp :gcmfvuj .(sove about freely within the material g up.c-s( f;s:. bymvjare referred to as

  A negatively charged rod is brought near one end of an uncharged metalb p1rd/ y6rla)c nw8.v bar. The end of the metal bar farthest from the chargedb rd6nav.cy1lp8r )/w rod will be charged

  Sphere A carries a net positive charge, ano.+0mpfpcpo + au,h -dd sphere B is neutral. They are placed np,ucfmohpd0o -p.+ a+ ear each 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 posidv bjpqwep+w b3,z pst:9 1c58tively?

  An originally neutral electroscope is briefly touched wie)(-u//s xiv8oyq jgmth a positively charged glass rod. The esm- / yqg(vi8/)uxejolectroscope

  An originally neutral electroscope is grounded briefly while a positk cxyob27b2n6o - wu,aively charged glass rod is held near it. After the glass rod is removed, the electros2cn ky2oo7bbux w 6-,acope

  A positive object touches ( g rh:kotz 7bj:t71pma neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but do rgt1bjhkm7o tz: (:p7es not touch it. What happens to the leaves?

  A large negatively charged objew90vax(n18rfc wus y. ct 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 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(.98a cvywsufr 1wxn0 does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb conpqu+s 0a (hxd0stant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The k tf3f6am2cwpp+* :sd first charge is larger in magnitude than the second ch2fdt:c 3w*f+ ampps6 karge.

  Sphere A carries a net charge and sphere B is neut + qn--: ox:xhk5asibxral. They are placed near each other on a:h:-kxxx5aib-q sno +n insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the spzl438hh ykk 0fbn-xmvw ) k8(4zou. charges on both objects are44 pozk0kwu hs(bzxkf38 -8. nmly h)v doubled with no change in separation, the force between them

  Two charges are separated by a disa .uc .1:kgwvq h9yhh3tance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the nkw.9u: vq3 hah hycg1.ew mutual forces?

  Two charged objects attract each other with a force F. What happens to the fo/ztt*b n l+bub 3xq+t x9(ryl,rce between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourthu9(+ t zql/yxxtbblrb +,n3 t* its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0gi3eh2ypl+md8f- +x vi8/yqg m. What happens to the magnitude of the force on the proton/q+ hx 8ip lgfvgym2-3ye8+id if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of;:yg g0id+veocq to - zvl9x/9u6jj9f 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed jyjg-:+ v c99go9l v;f/td0qei6o xzunext to the proton?

  An electron and a proton are separated by a*tgpq qb3 oyw/ p1e6sea;(ra4 distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m clooarap /pg3s b e*;1wytq4 (q6eser to the proton?

  A point charge of +Q is placed at the cen;;us h 5c,z (ztog3sktter of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that actgkz5;;3osh s(utz ,n 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 square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. s48p i98k4oc+t fjqltWhen asicltjqf489 4 p8tko+ 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 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 not a vectorxx4 xr2ii)ns3:ioe a8?

  At twice the distance from a point charge, lia5qnifgl/ n c ar+g/r81s*6the strength of the electric field

  Is it possible to have a zero electric field value between a negative adsi*w5q l;to +nd positive charge along the line joining the twoot ;d5qswil+* charges?

  Is it possible to have a zero electric pqs7 v6pjln/ 2 sx3(fbfield value between two positive charges along the line joining thesqf/bj3s p7p(n2x6l v two charges?

  Electric field lines near psi57y)wy vb4m;zm6(tizv bc s2ftive point charges

  The electric field show 7nr-fpywwl(b lb -kqar- n8.5 i)zwa8n

  Can electric field lines qj*yj0h jt2v;intersect in free space?

  A solid block of metal in electrosta,.uguf*m3b a xtic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in tf b mua,u.g*3xhe block's interior.

  If a solid metal sphere and a hollow metal sphere of equal drjm+a/hhtd ( 1p b1ee8iameters are each given the same charge, the electric field (E) midway between the center and thpjbte rh1 madh/81+ (ee surface is

  A cubic block of aluminum rests on a wooden table in a reg/asp7fel *5ypj/hw-*r( ozbxm8 1lhcphrm94ion where a uniform electr47 x5o8(c lmrfw1/jrehp-p*sz9p hl*myb a /hic field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charg6xf w1p6li 7n p4 -r ;g*xlz5yo6q3xhhpqm:yne

  A positive point charge is enclosed in a h29( gyxrmz lcjlue:6;ollow metallic sphere that is grounded. As comparezy l; cxluer:j mg629(d to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in statitu+ dj/2 .yf vxmu6kv9c equilibrium.

State Gauss's law.

  The charge carried by olkb pk s 89q-q)y/,heene 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 mC. How many m azqg6 2 2rg f7n2bp2.j(gpnthore protons than electrons doesan27 bpn rfgp6 zqgh2.(g 22jt this piece of plastic have?

  What is the charge on 1 kgpav7-+3 fdvm tj,e nfpo36ozw;z5 g-o of protons?

  An atomic nucleus has a charge o yvp,jd)bc))3egb 0q af $+40e$. 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 anymcz k8c-z+; vi/6ohmd -4.0 mC, respectively. What is the magnitude of t;iv y-khz+8z/mo6cm che electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the forv 1w4yb5g4xzzk6keo; 8km8b ice between them is 1.0 N. What is the xk8e6vmyzw z18i og4;bk k45bmagnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apay:tkbpt 18:8 hjawhd 9rt are they?

  The force between a j /y 9r;onjbg-$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experi6wu3u*jj ht,t,t1e8xue wpj z 8p2y2xence a 1.0-N force. If they are moved to a new separxwjhey6ut u3,p8 z1u8ej tw*j ,tx2p2 ation of 8.0 cm, what is the electric force between them?

  Three identical point ch .v;tp7hig k1karges 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 100 cm mark. What are the magnitudekpith 1;g. k7v and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges a4pj n,(fgo6o6y mv3nq re placed on the x-axis. A charge of +2.0 mC is placed at the origin, -2 nmyp6, vqn3o4foj(g6.0 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 following positions: Q1 = 2.00 mC at smlgz+vw: ;+odyn8v- 6)q,c 1fl zyvdx = 1.00 m; Q2 = 3.00 mC avzvw+1v:lqzfm g l ddnoc)+;,s68yy - t 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 seconmsu( k b(8yt3yu3:v xnju;o u5d point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the5uyko3 sxnju;uv t83: b((ym u 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, 0.10 m); Q3 = 5.0 nC is a ,lf8dehp15uft (0, 0). What is the magnitude of the 1u5f8 efplhd ,net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at e6oqo y tw9t0pxw94a4(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directionwe ywa4t9oqp6o 940x t of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are plac9mdwuxgx2m7zefu ) ti+n 416 y4v-m ceed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which actswvyg61udmmm7zi 9n4eu4xf )t 2e+-x c on any one of the charges?

  Consider point charges of +Q and +4Q, which are4 yl-jd5gy xi4 separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrosdxy5 jy- ig44ltatic 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 = -g/ 1xncjg y4umrg w+(a2lv g04.0 m. Where on the x-axis can a third charge be placed so the nnmw v+2g-x1cg4 g(l /ryauj0 get force on it is zero?

  Charge +2q is placed at the origin andzva/* xi1; avx charge -q is placed at x = 2a. Where can a third positive charge +q be placed z/vx 1iax*v ;aso that the force on it is zero?

  A copper penny has a mass of 3.0d i3n/4x;hy f6pcb8 uf 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 against the force of gravity by the ao4hgk33i0 b scttraction of a fixed proton some distance 4soi33hg0 cbk above it. How far above the electron is the proton?

  Two 0.20-g metal sphe*)srcj4lu*c r b.gw(gres are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle betwees lcu .br)rg(c*4 gjw*n 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 of the elecz nd mow8g6+dvm0a8wz62bgfj- y-m, stric field at a di,8f bdm m 6wag2v-jgzdn+0-m o wy6sz8stance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distanbbjouh*v *n4yrx9 9 +nce of 1.50 m fro* xunoy9*n94bb+hv j rm a 50.0-nC charge?

  A 5.0-C charge is 10 m from a sm9nyvf4z1 ; ls/*xqgk xall test charge. What is the magnitude of the electric field at the sznkgflq vy/x49 *x;1location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is ez80a9rbqe nuj;w(cc-p 88g s the direction of the electri(90n pasg 8jrqb8;-wu cceez 8c field?

  A 5.0-C charge is 10 m from a small test chaxrj dec.1dh3v b4y-c,rhmkl)-793v(yljz t p rge. What is the magnitude of the force experienced by a 1.0 nC charge placv)vyhb ze9h j r3 4- x ,mldpt7cdlj-3k1rc.y(ed at the location of the test charge?

  Two point charges each have a value of 3.0 C 2zmga krs/ zn )vo(*w6and are separated by a distance of 4.0 m. What is the electric field at a point midway between the tw*6v r o(z2wmgks)a/z no charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter 0xd0vq hjl)5astick and a -4.0 mC charge is placed at the 50 cm mark. What is the elalhq x50)jd0vectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 c2j: gd6 6k0bavgno .yem mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what pogga kj6no:eb206dy .vint on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC an wvlykqa19 n873sj5 uv,cyw7ad -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 c j,nyu85 3aaswv7v97k1 lqwy between them?

  Three 3.0 mC charges are at the threq4 nwvhn- 0nmu7w)( ble corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Fi( wnvhwn - mn07qubl)4nd the electric field at the center of the square.

  Consider a square which is 1.0 m on*fymwx xrmqjwq5 aun) z)5:- ; a side. Charges are placed at the corners of the square as folw my- x )zjxr:)nqf u*qa55w;mlows: +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 at the square's center?

  A force of 10 N acts on a chalpph,/q9 a,zq rge of 5.0 mC when it is placed in a uniform electric field. What is t,,/zpaqhl9p q he magnitude of this electric field?

  A particle with a charge of 4.0 /nes9gb(ow (n0fa l 4kw6 jk3cbl: cu; f(zx8emC 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 6-qcu2c4pv vm :wuju1,3g.umd000 N/C pointing downwardujd2-.uu: c v4cm vqwpmg3 1,u. 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 nt;+qar + sbmt(n+fdq ee9+ v,eC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the ma(;,nstb+e ++vtrfqq aem+9 ed gnitude and direction of the electric field?

  A metal sphere of radius 10 cm carrier iaz;:4(nsks s a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from:(rsak ns; zi4 the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charr1,asxz9+kyulisb -k 0p(h)m8 r eig8ge of 3.0 mC. What is the electric field 6.0 cmyr8 k,ba9l pre8kh1 z(xui-is+ )gs0m from the center of the sphere?