State the law of con ;b6vend6nv/sm+p20e+ s1yaaj;mcb j servation of electric charge.

  Is it possible for two negative ch ;0 pjz.hqjnc*arges to attract each other?

  Is it possible for a positive and a negative charge to attract each other? aea3f4 /nreok8 j9dq;

  A glass rod is rubbed with a piece of silk. During t/hfvz b )i9/mxs5) rzwhe process the glass rod acquires a posit z/5 xz m)hs9rbw)vfi/ive charge and the silk

  A proton carries a

  The model of the atom shows 5(d/h qysn4f cz2k x0oa

  A neutral atom always has;6fy;yio)k;k 0 ts-ww ew*i yd

  An atom has more electrons than protons. The awqtw2:r9d9eo 2drmqq g)x, v*tom is

  Materials in which the electrons are bound v)fd +hi l/phf:pf1cn0ery tightly to the nuclei are referrep)+pfh:c ldh0fin f/1d to as

  Materials in which the electrons are bound very loosely to the nuclei and 9ypk40j:koo 7v 2xikrcan move about freely within the material are ki7k0x :kjovyo 49r2p referred to as

  A negatively charged rod is brought near one end of an uncharg)5ttp ve r;i/twxxs y3762l ened metal bar. The end of the metal bar farthest from the charged x ls;t it )p/n3tx y56wr2vee7rod will be charged

  Sphere A carries a net positive charge, and sphereqn*cl *l60bj d B is neutral. They are placed near eac06njcld* ql* bh 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 chxh8y 6lw+81saw ) .(tyvxcm y.g:jb szarge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivelyvlz0exp- pr6qv2ob/)4 g0 xro charged glass gbo0vzxple-)rp6/0 o2r 4 xqvrod. The electroscope

  An originally neutral electroscope is grounded briefly while a pof9or2 36pthpgb*oj 5pfrm;r6c7 :fz nm k5o)gsitively charged glass rod is held near it. Afteggr9k6rt p53foho: 5r jz7;mb*62fmon ppc)f r the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Thekpt ) 28*sslm, nsawd:n a negative object is brought near thepk 28:asd*,nlt mss)w electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. Akj6fg- 7yx(w9gx e 9;wswm jl) 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 objjwlg7)kw6g(;m-99 xyjfex swect. 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 f-7cxzv+ xe5yconstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger 39p h0,wi7e*p/ywgc*ttz fjnin magnitude than 3* 7t i /9w,yjpn*ztcp0hwgfethe second charge.

  Sphere A carries a net charge and sphere B is neutral. They *+vpeib(/adsare placed near each other on an insulated table. Which statement best dep ba*es/v( +idscribes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If tth l8rz; i)q0phe charges on both objects are doubled with no change in separation, the forc8)izh t prql;0e between them

  Two charges are separated byrhds zb)qw pl/40l;hb9g zwd2p.-5u u a distance 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 new mutrduw4g.s p)ph90 b ;5-lz /zq buhwl2dual forces?

  Two charged objects attract each other with a force F. What happens 0ljdrub 3yg5- to the force between them if one charge is doubled, the other charge is tripled, and rj ug-50y db3lthe 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 ayqlne*)) ki4 iod0he 5 distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed *e yln4i)d05e hk)o qinext to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hepw.: ucr/3 v9 ggv5kcappens to the magni 9 3rcpkgvc5e/ uw:.gvtude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a q)t/k/hmz:0q6su qixjgv 33qdistance of 1.0 m. What happens to the size of the force on the proton if the electron iv0i3kgt/6)3 s qq j:/qxqhumzs moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a; mmtm p(wm*hju;u2flf1;8 sh 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 8lm2m fm ;1*;wphmhtu fsu;j(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 placesaf12r( ak) urd at the centroid of 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 magnitude of the force that acts on the center charge due to a third charge of +Q placed at one of tf(r1sakr)u2 a he other vertices?

  Which of the following is not a a:-icbz- la(q vector?

  At twice the distance from a point charge, the str79 g6gw; m*ywd xuw2wpength of the electric field

  Is it possible to have a zero electric field vatq 7 wc , fyg/cca5uakhs zx+4q89/1lolue between a negative and positive charge along the line joining theqhu/ t,7xlzs4 8gafq 5kc+co cw/9a1y two charges?

  Is it possible to have a 3p 7bhhrd0v t7zero electric field value between two positive charges along the lind7trpvhh 073be joining the two charges?

  Electric field lines near psitive point chargra+s ucq5l.j p.1m0h oes

  The electric field shown kj o2o4o;qpcv; ;q;ch

  Can electric field lines intersect iqfpo;zqfmf/ a:2c+m n2)hm.gn free space?

  A solid block of metal in electrostatic equilibrium i 6p( dzmz*,xag ql(o2ns placed in a uniform electric field. Give a statement concerning the electric field in the block's intezdgpa6,(x z2n l*(m oqrior.

  If a solid metal sphere and a hollow metal sphere of equal dia4a/ja71hi i;lb9xf,vpdo w(p meters are each given the same charge, the electric field (E) midway between the center and the surface isp,9whl 7 i1/aavi4(x df;ojpb

  A cubic block of aluminum rests on a wooden table in a1wb-(6v omev kg hh z36k6zqj3k+jj;a region where a uniform electric field is directed straight upward. What can be said concerning the charge on jkb3 vhzjvm3h k6z -ea;qw6k6gj(1+othe block's top surface?

  If a conductor is in elec+j/x7i iy zhlyt*;f 7mtrostatic equilibrium near an electric charge

  A positive point charge is enclosed 5; il. 6ilbn ;gy q4gxlij/fs) rfaa8/in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere l;a4ji5;r 8a 6 fisqyibfn xl.l/g/g)has

State three properties of conductors in static equilibf0a.c)tp,nuo6p g y9yrium.

State Gauss's law.

  The charge carried by one electr- aka4e z07q bsc0l,0cfdctsg(c v( -qon 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 more protons than.r jg7 h,vygpg/6dmbwx6xa ,) electron/ 6d6,hgwymb,jpgv ra x.7x )gs does this piece of plastic have?

  What is the charge on 1 kg of p9a6jrc* lew xsc 2l89arotons?

  An atomic nucleus has .2 bbnls ad6c-1vgn.ea charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.+x2dlker *(, ( bygblk9u bxp.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the ely(r*k+belb.ub2 p k9,gdx(xlectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between azj+c x-84 z /fcixl3(lbgc -u,y qe9athem is 1.0 N. What is the magnitude of the secol,qgzfe (3ay+zc/ xluxa 48 9-b-icjcnd charge?

  Two 1.0-C charges have a force between them o/6g:rf4l (r :msvdz lyf 1.0 N. How far apart are they?

  The force between a q) 7srfdl78o /oicb o($30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 /by;bd)*z - z zto/zztcm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the ele/dob*-zzyzzbt) /tz;ctric force between them?

  Three identical point charges ofhd 9gmxhxz+bxxm )twfi 4u+gr6* 3k4+ 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 magnitude and direction of the electrostatic force which acts on the ch bhx4x gz xr +w4fg+x+)imuh*t 639kdmarge at the origin?

  Three point charges are pm:jg0g :7incx mc +h0blaced on the x-axis. A charge of +2.0 mC is placed at the n0 ::7+gm cxbcgjhi0m 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 the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following 1 fn/6c p;.xkfgwq,dh4wee+9z *s hbspositions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at /6fxpn;zqkfbs9 hcg 1w.h*4e, w e+dsx = 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, andz7;w 8 ft :v:+vzlxbwu a second point charge of -Q is placed at the upper-left corner. It is obt+ l v;vf8:wzz wx:bu7served 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, 0.( auhu;+bdm;)l-i)n aa et n.m10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charge?aa)nneh-ul+ tbd;m mu;.a )(i

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1 1bgu h *ociamc/5.*f:-p5bssji3u rs.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 the 5.0sbaobic*m s f*ij/ chrs.35 u-u5p1 :g nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an eq2ct10 yg :gbqwg8 +)hfcmlrbr qo9a8(uilateral triangle which measul+c gw0c81og b2fhqtm 89bgrr )a:y( qres 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 +( cv. c(n5rarj4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of rv. a5j(nc( rc-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-Cyopj+2rd , l,obyd90r/ k-k x/a(e3tk g purn, charge is at x = 4.0 m. Where on the x-axi2r3r ( /ktpxk +uo-,aen ,/9kpgjdyy,d b0lros can 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 66wp ))und+gmmm*y7wljl/ orat x = 2a. Where can a third positive cha/)*dnmug 6pm6o)wywm lj +7rlrge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g r//iv0fx1iysuc2xrmz4fry0esk /p r73i1 .v. 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 t/romg /j( cc:.7 cxers+uui 3force of gravity by the attraction of a fixed proton some distance above it. H :rc tjuo/eg+ ./sc7 uic3rx(mow far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads w95v 8 yi9og2eafgwq-ij-a h pe8s :af/hich are 30 cm long. ig8gh e iqf99a8-5 f:ov wspay/ej2a- Both 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 is the magnitude of the electr 4*sl +ooc,)a ozk)k3a6gjlno1v yb x.ic field at a distance of 1.0 m from t k1ayzbon*3x 4ga lj os6)v)o k.+c,lohe nucleus?

  What are the magnitude and direction of the electric field akxoq6m2 e/ wl25kw2f nt a distance of 1.50 m from a 50.0-nf6nw x/mkw k2lo 5q22eC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the do3o s;1uqd n5magnitude of the electric field at the locati1 dduqso n;35oon of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the au1h w4rc*/zudirection of the electric fiza4 *cru1u hw/eld?

  A 5.0-C charge is 10 msj p0/iwnve( 4 from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chargive4/n(0jp wse?

  Two point charges each have a var:k/yos8 g2 e2w kd6qalue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between/g: ksk68dwa2yo 2 rqe the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter s/.m8x r6vy--b 1vnru dhd3kqxtick and a -4.0 mC charge is placed at the 50 cm mark. h mnvx 8-q dxdkyrr3v-6.ub /1What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placev 7v0rg tb8w4ztx5vz)d at the 0 cm mark of a meter stick and a -4.0 mC charge is placed gvzx8bvtw7 z)v04r5 tat the 50 cm 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 = 0 dub;(-ofrp6 wand x = 0.20 m. What is the magnitude of the electric field at the point o;6dp uf b-(wrmidway between them?

  Three 3.0 mC charges m)sx) dec q:c1are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squares)x)qcd :cem1.

  Consider a square which is 1.0 m on a side. Charges are placed at t ekypz*1y-jj662t s z rkgv+o)he corners of the square as follows: +4.0 m2 +jyk krp-6go1y6z)zj *e vtsC 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 when it is placed in ysgb z-bakod ggxa*;c2 t53f:x0 3cd9 a uniform electric field. What is the magnitude of this ele-s*9cfgay o3ba3 t5d2cg:0z b; gxkxdctric field?

  A particle with a charge of 4.0 mo1 sab4 ls+(-n nzo raboe t.4na2)3hsC 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 6000 Nhtaeg17 v dc*i95,szw /C pointing downward. What chgz7 91,hs5vicet daw*arge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries duat1ckl /:3 p(zb4cfauv+h t*v ,c:ya 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 direction of the e: v1tcctkpz(uh4y/:a cu v3 b+dfl* ,alectric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnitu/u7*2 dz.kpz* wn sdiqde of the electric field 5.0*u/zw.dkq* 7dsin p2z cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries argyx-7jo5)5phth+s t charge of 3.0 mC. What is the electric fh+py-7t go 5) htjxrs5ield 6.0 cm from the center of the sphere?