State the law of conservati;*usp(2n ai-bl0sf 2f5 yz ixwon of electric charge.

  Is it possible for two negative charges to attract/lvoq+t h *fd7 )zo5fm each other?

  Is it possible for a positir ;5x4dsad9k1o pbyz, (oqma0ve and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During05 :.kema zwwq the process the glass rod acquires a positive charge a.zwqw:e a k0m5nd the silk

  A proton carries a

  The model of the atof8whjv7u86e2 p w5;/pcv,s0b j fzauk * uhce9m shows a

  A neutral atom always ha 8a hpg9;l9 84)jnnlpgkdy.hhs

  An atom has more electrons than protons. pm+,-b ne7+vn2v3ept )a rpyyThe atom is

  Materials in which the electrons are bo19tm 3w:e1lojgd 0i7ts*uy k ound very tightly to the nuclei are referrwomik u dlgy t:90s7 jo11t*e3ed to as

  Materials in which the electr4n 2 c 2px 3fs6y0j4gvxwwysd5ons are bound very loosely to the nuclei and can move about freely within the mat 6v4j2 4wypx3y s2fscg5n0 dxwerial are referred to as

  A negatively charged rod is brfex9r+8 :e( h6jntnmxought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be cheme9 nx( 8f:6+tnhx jrarged

  Sphere A carries a net positive charge, and ui +(asrxtbegk7h(k/ib.78u sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with ke8 .+x7bi btu(agurik ( /s7ha wire that is grounded. Which statement is correct?

  How can a negatively charged cf1k;9 f o0jvti5itu5am8s3 d 6)twhxrod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positiv;pm bdd4j9p d9ote 0w2c3wh m dwoz203ely charged glass rodh499p0d3db t0;pz2me3d cowdw wmoj2. The electroscope

  An originally neutral electroscope is grounded brkl3,xn12:n2 jjsymh niefly while a positively charged glass rod is held near it. After the gnn2: hlkyn,x2 jjsm13 lass rod is removed, the electroscope

  A positive object touche.2n1bxybcuu9 s a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. b.cb9y x1uu 2nWhat happens to the leaves?

  A large negatively charged object is placed on an ih:ctl ,q2 we*h 6+pgbznsulated table. A neutral metallic ball rolls straight toward the object, but stops before h :*h,zwc+ 2ept gqb6lit 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 Coulomb consd e.9)j/ge5w esomqp -tant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The s 7c*vmb o je4:vgo/r3first charge is larger in magnie* rm/7oj4o 3vsbg cv:tude than the second charge.

  Sphere A carries a net charge and spherrdj9ss mkipseirr; .r::()1g e B is neutral. They are placed near each other on an insulated table. Which sta.:1s) jie(r r; :mrsir9dpskgtement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If thg)hg tk2t6+ b-itsl,w e charges on both objects are doubled with no change in separation, the force betwe6bs+hg2t,t g tlk -)wien them

  Two charges are separated by a distance d and exert mutual attrawuni5 sv 19wyp68 :)d xz6czuyctive forces of F on each other. If the charges are separated by a distance of d/3, what are6wcy65py) zv:in1ds8wuz9 ux the new mutual forces?

  Two charged objects a)wez -r(yfgk*e;;iwg ttract each other with a 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 reduced to one-fourth its original va(f*w yi;w r;gz) eek-glue? The force is now equal to

  An electron and a proton are separated by0uv ),,ctvuyd.h wi.;gc;ph a a distance of 1.0 m. What happens to tc)tuv,c , .av i0.hg;pydwu;h he magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a protut k:h.;e(0mmawx: kvon are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a (.weht:a u;kk0mm:vx second electron is placed next to the proton?

  An electron and a proton are separate1yx yv uq(k+i8qs c18d.axo,bd by a distance of 1.0 m. What happens to the size of the force on the proton if the el.xis v1b(o acd u,qqy+88y1kx ectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the centt k4db+l9e/zo6j; 7 .ikqo 7m 6pyiqober 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 4j/.obktzyqmi7o eodk + 69bi p7q6;lthe 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 .:3iw-ty,y0oahu (st epz0lk. 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,ke(o-i3p0 yt0wlh :.zyau st one of the other vertices?

  Which of the following is not a a;lr+qtv3(f al+z*a f vector?

  At twice the distance from a point charge, the strength of the electric f01 r8fz3x t 6i c1le68 3ps5kjdaaxyjfield

  Is it possible to have a zero electric field value (jupq-v8 5ap3oiop v2x d(9gyp p2q/zbetween a negative and positive charge along the line joining the two p-5q(v pgpox(up2 q9/va do 2zijyp83 charges?

  Is it possible to have a zg:n) 8smxucvc 6fl;b+ ero electric field value between two positive charges along 8xl um n;s c)v6gb+:cfthe line joining the two charges?

  Electric field lines near psitive point chu. 5 3c+vlkq/c1mqbux- usn h.arges

  The electric field shownfom:b e2-bncj1c u5 nj03ire6

  Can electric field linf0bc1vb,4+nmki 0b yy es intersect in free space?

  A solid block of metal in elec -cgh:f/n q*sxtrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electgq/:f sc-*h nxric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamet:w v ng7nrx 2hpn3b1.mers are each given the same charge, the electric field (E) midwaygm.hwvnb2 3p7rx n1:n between the center and the surface is

  A cubic block of aluminum resttg hp33q ,xuai1k1j 2ws on a wooden table in a region where a uniform electric field is directed straight upward. kuhjwxpg2 tq ,31 13ia What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostati*yp wyzh1w 3dkl5yb9-cr 5(zl c equilibrium near an electric charge

  A positive point charge is enclosed in a h f:hm8l-acj( oollow metallic sphere that is grounded. As compared to the case without the hollow l-hjo fc:m8(asphere, the electric field at a point directly above the hollow sphere has

State three properties of conductorssyk 7hj/ (zjn. in static equilibrium.

State Gauss's law.

  The charge carried by one electron isutp q.4 )k4vcv $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has q/l :dqw8u 5bwa net charge of +2.00 mC. How many more protons than electrons does this wq 5db:8w/ulqpiece of plastic have?

  What is the charge on 1 kg of proton h ki7u01r u5f(w.fnnrs?

  An atomic nucleus has y-rr1( fw yixc4c :h ft;+jds2a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, have charge va, x:ou p3lszl 4hs,6naspy6j7lues of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between top: 74,spa3jl6s,y nhz6usxlhem?

  A 1.0-C charge is 15 m from a second charge, and thek+lwnf(3 9o 79dogwkagqgl -4 force between them is 1.0 N. Wk+(7qdf 9k-glag3 go9w ln4wohat is the magnitude of the second charge?

  Two 1.0-C charges have f t3hi x9-sgick z/.pp4*pz1ea force between them of 1.0 N. How far apart are they?

  The force between a by341wuz) s0 eklea6 d$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience ayxa82c8 gk).nj*;z/m.hsj*di gi e 4fmjl5 io 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the g/x*2 oi.m5n88ze)hyljk cif.mgsdj a*4j;ielectric force between them?

  Three identical point charges of 2.0 mC arnf1l:9fmru(hm rxg 3.e 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 olmr(mgr:x1h.f9 nu3fn the charge at the origin?

  Three point charges are placed on the x-axii:y k)xzlp 53as. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, i)l: 3pkzxy5aand +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 atvg4,q28rxrm o 4jcy ;h the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at;ocq4 8grjmhv ,r42xy 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 cente 5g(3b x)lycd5 yrf8bbr of a square, and a second point charge of -Q is pla bfl(c535yrb x g)by8dced 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 placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0kxg5a j;0xpu(6w5wh f nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the akpj ww6f5xx ;h5 ug(05.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC iseg.t :tpx*pjk( w v+2xctu o*0 at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net(.ptt2 *xp uvt*+xeo0:kgc wj force on the 5.0 nC charge?

  Three identical charges of 3.0 z: dz:xzxr5)b mC are placed at the vertices of an equilateral tr:bx 5zx r:z)dziangle 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 e )(z)b/mwdt4o (s.mexn .dya +4Q, which are separated by 3.0 m. At what poiym .w bd st4anz /eed(.)x(o)mnt, on a line 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 = lp42n s;vuw.vcm.cqdf.e mh).l2)m0t qv t g(4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zereqgc) pnm (..4v uv tw;q)dh0.l2tvf scml.2mo?

  Charge +2q is placed at the origin and charge -q is placed at ljr* .z ljz9(+o.rikl9 3dmxfx = 2a. Where can a thirjold* 3r+fzlr lxj ..9k9imz(d positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totbt8d9kzr5 ,fbn n 4whii2x9*z al 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 attrac8)w2e uxixhtx ,qx2ny2p 4ep .tion of a fixed proton some distance above it. How far above the electron is thi22xhxntyx2 .pw,upx e) 8eq4e proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threa 1;hqsfwx 6pwi8ddf(4ds which are 304h(;8 wiq6 fpfx1swdd cm long. 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. Wh u+xzh.j xxt)3at is the magnitude of the electric field at a distance of 1.txzjx +3h)u. x0 m from the nucleus?

  What are the magnitude and direction of j+9eyl v7f4ktenxkw8+ 2 6pj vthe electric field at a distance of 1.50 m from a 50.0-nC charp+ 6n82we4vt lj97 ek+fvjkyxge?

  A 5.0-C charge is 10 m from a small tesmiagp (4)-k3vm6wiu9 b td5ndt charge. What is the magnitude of the elecad 3t 6kmw-i im(5) unpvd94bgtric field at the location of the test charge?

  A 5.0-C charge is 10 m from a smald)9w(w(r,bc3tsc c; rwerj21tx5 yt k l test charge. What is the direction of the electric field?9 5 ctt(t)jwr,21(rdkcy ec3b ;wxswr

  A 5.0-C charge is 10 m from a small test charge.e4en11w t4crr4b. q yd What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of thebqnw 4yetr4re11 .c4d test charge?

  Two point charges each have a value of 3.0 C and are separated1h4 0:x, 8hy-foe wezoe2j 6be1s8vwwde +jsy by a distance of 4.0 m. What is the electric field at a point midway bet 0j y1wd fzseh6hoewe,y:ewe-2s81 jo x4b8+vween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mCvpw x5t+1x sb4 charge is placed at the 50 cm mark. What is the+x4 v sbxt1pw5 electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a metexy3fmpa b+d0x 1hal 9(dg6l/gr stick and a -4.0 mC charge is placed at the 50 cm mark. At what bd 3d9 plx0fa16gl+(gxah m/ ypoint 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 64bxbpgyrbp7*s8fh h 26x bl .x = 0 and x = 0.20 m. What is the magnitude8hgx s*b4l6 rpb7hbpf.b6x 2 y of the electric field at the point midway between them?

  Three 3.0 mC charges ar 6 +b)c zcfnfbu kpyc+1.4a*aie at the three corners of a square of side 0.50 m. The last corner fbn+c)zc.u4apc y1a +k bf6*i is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 mygi xde0v 87umpd 38zl4+ hd*u 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); -3.0 mC at (0, 1). What is the magnitude of the zul8 mvye3p07 ix*u8dddh g+4 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 az. p;im;gq)an uniform electric field. What is thp ia;.n; g)zmqe magnitude of this electric field?

  A particle with a charge ossx0z:,e*zh6 ydhw , tf 4.0 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 electric field of 6000 N/C e+ uhsr9h-wj m)nfv3 1/ada2ypointing downward. What charge must b)h my9fv3r2+ n e/d1swahuja- e placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The baqa p am06)7d))mxj4 pycz qzz.ll is placed inside a uniform electric field, and is suspended against the force of gravity. What a0a))pdz7c.qq j 4pyxzz6m )m 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 (qkrzgr *q/8,f jenf.the magnitude of the electric field ej8.g(,f nzrrkqq*/f 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a cha, 0el*bqb cve:rge of 3.0 mC. What is the electric field 6.0 cm from the cent,*:eq 0bvcelb er of the sphere?