State the law of conservation gke;k2+bl8 j xof electric charge.

  Is it possible for two negative charges to aakel4i29d7 x k2dyqz*dth 26 bttract each other?

  Is it possible for a positiva m7j db+v7ocv;y;ilct 2vkt9 mop )89g8s(zj e and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silps7wx,jgkd gt+j*6. sk. During the process the glass rod acquires a positive charge and7g,*js + x p6w.tdksjg the silk

  A proton carries a

  The model of the atom showcsy6 .gc6w85(fo m ebos a

  A neutral atom always *8ts xp4rgouk .j 24 qb9p b,zl98uxuhhas

  An atom has more electrons than protons. The atomlj.dte w;6m lwd)/a:b is

  Materials in which the electrons are bound very q9 (hoepk3x7 a wnm.x2plk 4u6tightly to the nuclei are referred tuxkn 2q lw3ap7m4 (6hp9e.okxo as

  Materials in which the electrons are bound very loosely t rne2 y;ohnlxze91 d)-o the nuclei and can move about freely within the material are referred tn;x2 re1z-neyh 9o)dlo as

  A negatively charged rod is brought near one end of an uncharged metal bar. wei* 9dkwm/5nuy2n5m /md fulbic,djy()3 b+ The end of the metal bar farthest from the charged bw(y /ud*+,nbum5fm km iw le5 2 )njyc3idd/9rod will be charged

  Sphere A carries a net positive charge, and sphere B ish1x jtvg m(3 zmmsxu03vu/7 h, neutral. They are placed hzu1,mvv /h(xxus m0m33j7gt near 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 posit;257m scpqbl3qd;djb0gl q b/ sm4 9nsively?

  An originally neutral electroscope is briefko30 x lj7wes7**jiz tly touched with a positively charged glass rod. Th0ise*lk 3o 77wt xj*zje electroscope

  An originally neutral electroscope is grounded briefly while a nyk4u 30nqofa-g( mtwf 8* ,m )elb-rdpositively charged glass rod is held near it. After the glass rod is removed, theg-qlwnok- u df*n b)e8fy(m0,ratm43 electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Then n)) f ,oquf1tp;t3orlq95mzo a negative objen;rl)pf o5uotzqf9oq1)m , 3tct is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neuchp 8j 4yr fqz+9*wre4x jap62tral metallic ball rolls straight toward the object, but stops before it4p2 6z*r9 fyjap+x4wj8 rchqe 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 does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Couldy ,mp w p3+09arfx n 6e:90i8r s5ixdeypiha;omb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thewi kcb ) g:u/eq;w)xsh3:uf *c first charge is larger in magnitude tha/;xccwhsk)3 f i:u *wgb:que) n the second charge.

  Sphere A carries a net cha(zmb( y5sr 1l6 8zcx4bd rhto1rge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the roy z8h(1(dbr l sc4zxbt16 m5electrostatic force between them?

  Two charged objects attract each other with a certain force. If the ca4ydhejzaa8(w a*2qy b 96m o*harges on both objects are doubled with no change in separation, the 6 *2a*w (ayoy4jeqa 8 hd9amzbforce between them

  Two charges are separated by a distance d an5y s9,wzd t gr4)hjj+xyqn 6k-d exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual fdkj56gs,q nyyjr+-zht )wx94 orces?

  Two charged objects attract each other with a force F. What happens+r565( q;)raakddma:vtdh d w to the force between them if one charge is doubled, the other charge is tripled, and the separat(dad5amr6dqr; w:+) avkd t5hion 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 o9wz rlyj0c 79 llbq(y-f 1.0 m. What happens to the magnitude of the force on the proton if a second elect l097jrwy ylzcl(9- qbron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happe g6oz1y+wrtncq 0mp n-z4/v6u ns to the magnitude of the force on the first electron if a second electron is plac 0p6q cmnow z6+1n-4yzutgr/v ed next to the proton?

  An electron and a proton are semw0 tsu6 p:wz5ftymo6(yn )r*parated by a distance of 1.0 m. What happens to the size of the force on t0yftw6ry s m *:n(o)mw5u6tpzhe proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed zkakmsd(9j ohr e.;-la5;xy 9at 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 9-k axhj(ea9l y;ko;dr.5z sm the center of the square?

  A point charge of +Q is placed at the lxzvrn*o ka*q*d 2u1/0v7t ihcentroid of an equilateral triangle. When a second charge of +Q is pla vq/0*xv2 1akzinrh* 7l* doutced 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 i3zsujpph(22mx 6 ;s na vector?

  At twice the distance from a point charge, the strength of the electri +.lt4fu yt-bic.ap pv1iu0 l/c field

  Is it possible to have a zero electric field vah,gvwp2 bc-t +lue between a negative and positive charge along the line joinin+ p2,twb-chv gg the two charges?

  Is it possible to have a zerhzj02de1i kwbck-t-as h,e 3 go6n:1vo electric field value between two positive charges along tsn tvc:ad-3b -e2 0h6hzgjkioke11 ,whe line joining the two charges?

  Electric field lines near psitive point9s s6 h a7k4v20nnbkix charges

  The electric field show2v flpph5as4u7qyg ;l bo m: *8p-ivy,n

  Can electric field lines intersecufg) :p;s9x-a gfjk9g t in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniw8fumgkwrx2+2 3w ls5u p; og;form electric field. Gf3w ; gk lgw;8r2up+sm2w5uoxive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are wcm np;u2.g6c each given the same charge, the elecwp2unc; . cgm6tric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in r6qx r*t.6 mmba region where a uniform electric field is directqr* x6mtmrb6. ed 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(2ok08b /lpv hlniy 57uri5v. 2gwbbv charge

  A positive point charge qxyubbsg+1() is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point dx u1(qy+)bsgb irectly above the hollow sphere has

State three properties of conductors in st 9b6 htm+tk).z7boj(3fdbu s gatic equilibrium.

State Gauss's law.

  The charge carried by one electron ir7r mwq e1-mk:s $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2.0/4x4jsiv73:bkdc gef*z6 ;e5 cc u-.gb oicne0 mC. How many more protons than electrons does this piece efvcx zeb4 sg *uj;ki43decinc 75/ c-gb:o.6of plastic have?

  What is the charge on-govti7jqj27i +eg m,) 4 yycx 1 kg of protons?

  An atomic nucleus has a charge oft9dvn-q 6zb5j $+40e$. 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 2vr t8c6;fgwby6qbd02.0 and -4.0 mC, respectively. W6qbg rdy fwv;2t 0cb68hat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charg4o18f * vyhj le,fn9wp-,tgai; f+eude, and the force between them is 1.0 N. What is the magnitude of the ene pi9o w h4-,;ly*ta1jf+ 8 fvd,gfusecond charge?

  Two 1.0-C charges have a force between them of 1.0 N.ek,sspr4llx 7s8o7c 8 How far apart are they?

  The force between a ;qs 2lq. sx8rudcfks 8 be8k/thk l33($30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exp iws6fp5e gbkl253x f6erience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what ilk5s5fbx 63w6 ipg 2fes the electric force between them?

  Three identical point charges of 2.0 mC are placed on the +1 6x ali54m oezg7..br d6chs2yyifk:cuft; x-axis. The first charge is at the origin, the second to the rilmi.; :hcy.1s zd624kr f7ogcxu6at fbi y5+ eght 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 placed on the x-axis. A charge of +2.0 mC is placed at apni/ slo lnu-8*: ki1the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100o*a1:llnpn/ i u -i8ks cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are loobji8rqg( jmd* z*d .-d ipp;e3*obi 0cated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC0i.i;*pd ombdieqpdr *jz o- *(3bgj8 at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is 1 dexls5az dn+aah3 zo.0m 6x9placed at the center of a square, and a second point charge of -Q is placed at the upper-left corner. Itez.6a0 haolx d3x 5za9n dm1+s 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)dtq5gd t.*fccr2r b 5uj0ry7, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net f tcbtcu.2)rd r5d0jy r7f5 q*gorce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.jc w/ a ):f-p ..a: l4asz*iqd/duknwm30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on thz/ .m aad*pdc) j./:f4u-qslwk:nwiae 5.0 nC charge?

  Three identical chargesty9jb5l.d6x sf k,-pb of 3.0 mC are placed at the vertices of an equilateral trianglf6,9bb kxl5 -sjy .ptde which measures 30 cm on a side. 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 3.0 m. At what p rb9yi*6,kj)q6esu . xilar*point, on a line betwi.*x)* u6ie,l6a p y 9ksbrjrqeen 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. Where oz6bx*59a, ku4x)i4sxv jmaev n the x-axis can a thirxi9m 4,bk z)vsex5j *v64 axaud charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed atwwp ;)v :lfwg1 x = 2a. Where can a third polpgww;:1vf)w sitive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total o zi wmvhf0 z*9hpotv2y7b:k2 2trn x)-f $4.0 \times 10^{12} \; electrons$ 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 attraction of a fixm4ge-c + *gh ickk37qfed proton some distc-gq7c+*3 h kefm4gkiance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting )v( i1a-j iznqthreads which are 30 cm long. Both are gi1qz(v i -)jnaiven 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 is the magnitude of the eleckc fp6wg63c :g vc5x8ctric field at a distance of 1.0 m from the nuclexpvwkfgc 3 6c5 :g8c6cus?

  What are the magnitude and directione p,t(++)n gsyyocsk6 of the electric field at a distance of 1.50 m from a 50.0-nC cgtn ,y6p) oss+yk(+e charge?

  A 5.0-C charge is 10 m from a; yv9dup 8k r39ag)klag ohc(- small test charge. What is the magnitude of the electric field at theaa po(uv9k 3-gk cd;yrg98 )hl location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is t ytifa 4 cf47wq6 uapw;s/n+m:he direction of the emnw;4sufwi4 7aa/f6p q+yt c:lectric field?

  A 5.0-C charge is 10 m from a small test ch(gpzub 1 + nz8- c5lzyd;hrsq)arge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location ofy( slng- p8h u qz+1;dcbzrz)5 the test charge?

  Two point charges each have a value of 3.0 C and ar kpurfc 0v895se separated by a distance of cvsf8 5r pu09k4.0 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 7afww* lxxo86 g4gj+ jstick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 c g8j wjx67a4l+ x*ofgwm mark?

  A 5.0-mC charge is placed at the 0 cm1hd1(td bgjy+ mark of a meter stick and a -4.0 mC charge is placed at the 50 11h td dj(bg+ycm mark. 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 are placed at x = 0e+2ktp i w98 mj9px4pd and x = 0.20 m. What is the magnitupp 29i djtp9w+mk xe48de of the electric field at the point midway between them?

  Three 3.0 mC charges are at the th0y 2i r*:3nyd1tntmbb ree corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the elec1b tnbt :rmn 0y23iy*dtric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are place3;3iv,i posrid at the corners of the square as follows: +4.0 mC at (,i 3o;rivspi30, 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(6 l*u otjlw +lhsspo 1s,g-z: on a charge of 5.0 mC when it is placed in a uniform electric fis-g+o lw,1lj(usp t:l6zs * oheld. What is the magnitude of this electric field?

  A particle with a charge of 4.mfkjq*, /jrh,t19 o pg0 mC 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 el:0( *qdedus nyectric field of 6000 N/C pointing dow ddyn *s:uq0(enward. 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 -2.0ez u5ewayy ,u5 7xod0zee ;x7j 42zg+kbrp5e20 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude 7pxyzoed5 ey2uezk 4ew27ej;uag 5, r05zxb+ and direction of the electric field?

  A metal sphere of radius 10 q 4nx7bdl3x)g 77nqoz cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm f7 zxqgdxo)qnb4l7n 3 7rom the sphere's surface?

  A metal sphere of radqoiwu;g: /z1pr. 0uqm3 8gxdz ius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphgmu; 03qu:wr8zqi /o x.p 1zgdere?