State the law of conservation of electric chy:wfg uq7gt:eu-lv; *arge.

  Is it possible for two negative charges tombc, -tdow8 o2 attract each other?

  Is it possible for a pov.s 3/rvn5 daisitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the proce /bdh1( t5 ;y(w/pu6aanz urcq0r8d lmss the glass rod acquires a posiaw(p rc(8hu/tr5b;nyq ld1 a6dz um/0tive charge and the silk

  A proton carries a

  The model of the atom zgy+dg o;n4mx:1-*. +de5 mgz fcc85hcxfsqdshows a

  A neutral atom always h cjp sx41,d(vtas

  An atom has more electrons i4qep -nvpv/ tf+c/:j than protons. The atom is

  Materials in which the electrons are bound very tightly to tbn( nv4d(8 osshe nuclei are referred to(4n dnb vss8(o as

  Materials in which the electrons are bound very lon xac02 efees84-t- z zruqr96de*nr0osely to the nuclei and can move about free0xneer2zqa9* enr4t su- 8 frz -60decly within the material are referred to as

  A negatively charged rod is brought near one end of anm-v- qxvt 1 ul0e-orfvd a6p/. uncharged metal bar. The end of the metal bar farthest from the charpd -te0vvqf-6.mv u xo /1la-rged rod will be charged

  Sphere A carries a net positive charge, and sphere B ishi)k0 c ha mb8a9u(vx2 neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which s 2a h)vu9k(80cxmaih btatement is correct?

  How can a negatively chargl067)cdgqi6 qj6: m qd;dzmwled rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched xu (oyr95tg) jwith a positively charged 9xoru5 g(tjy )glass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positivelk : vg52xc4f8u/id vaay charged glass rod is held near it. After the glass rod is removed, the electvid:xc a 4 8fav2k/5ugroscope

  A positive object touches a neutral electroscope, and the lepw4g0:; atk (c+r otsu umxz+0q0b ,wdaves separate. Then a negative object is brought near the electroscope, but does not touch t4d0kux gr 0wbu0;(pwmazo+qc:t,s + it. What happens to the leaves?

  A large negatively charged object is placed on an iqy8 )e,w 5j:mzhn;d dynsulated 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 h d:8 qywj)eym;5 ,zdnnegative 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 u 33)*cb hvbo d.*pk 7wh:v6usr)ygzg Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separv httu kt36tuj27b 0y7ated by a distance d. The first charge is larger in magnitude than the se3v07t 7ujhkuty 62bttcond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near eacwy:+oot5 :yo+jld p-q j (dex;vb82nch other on an insulated table. Which statemenn 5voltcd- d(j y:ox;p:eyo+bw8q + j2t best describes the electrostatic force between them?

  Two charged objects attract each other with a certain f s p zgu4m-vwzaxtho7s(2 2b8(orce. If the charges on bot82 7azm((p2- vtxgos s4ubhzwh objects are doubled with no change in separation, the force between them

  Two charges are separarai (i sy*p6*wted by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a dista* *p6awryisi( nce of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What hanc8vz0i193wbnfdeq 6/)y lxod1pb.w ppens 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 value? The force is now equa39ewcd1v6/1f)nbzb0op wi d x8.q ny ll to

  An electron and a proton are separated b-ab3hil tq 6ac,2q0exy a distance of 1.0 m. What happens to t6q,cxle0 a t2-3qi hbahe magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a pror4l*b i*e)qloton are separated by a distance of 1.0 m. What happens to the magnitude of the4q e *blo*i)rl force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated sdke*,i 0vo lx4e 3 m82jiffm:d5 -slxby a distance of 1.0 m. What happens to the size of the force on the proton if the electron kmfl*f x32olx4si-e,id5v e0 s md8j:is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squacx38p:3qg1 3 w3ja yqf qtx/5bq 1nvwure. When a second point charge of -Q is placed at one of the square's corners, it is observed thatqa vt1u3fp3xw c w q1nxq83bjg/ y:q53 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 square?

  A point charge of +Q is placed at the centroid of an equilauw/v)c+ pxtb/s;* qkn teral 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 the other verticeswb/x p c+n;kvs )/*tuq?

  Which of the following is not a9b k39t jqgg2paecd6k93q 5gq vector?

  At twice the distance from a point charge,8xm pzqz8wx.-o07 its the strength of the electric field

  Is it possible to have a zero electric field value between a negative and ye 0beay4n o+)positive charge along the line joining the twy)b+ 0ae on4yeo charges?

  Is it possible to have arslt t7 uu8v.6wzv9d, zero electric field value between two positive charges along the line joi9dv 8vrs,.ultw7 t 6zuning the two charges?

  Electric field lines near psit aq8/ e rdj;+3hwbqbn2ive point charges

  The electric field s :gu:gc-f)4t dda+nt7mq qw.whown

  Can electric field lines intersect in free spacu 5-h e3ue )(01fcmknfcrty f:e?

  A solid block of metal in electrostatic equilibrium is placrd1lo/kl7i s f95xhs0 ed in a uniform electric/fi71 h9dlor 5ssxkl 0 field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metalx5/shdnplaag)b*4o,uix o, ) sphere of equal diameters are each given the same charge, the electric field (, nog)u4labp 5i*so /, xdx)ahE) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniformn0*q1 sqpz9qr electric field is directed straight upward. What can be said concerning the charge on the block's top 1*nqqrzp q0s9surface?

  If a conductor is in el s4a on wy1ul(s(l6db*ectrostatic equilibrium near an electric charge

  A positive point chargezt gr t81)u)t g4pwp)e is enclosed in a hollow metallic sphere that is grounded. As compared to theu)ept8 w)p)t 1rg4tzg case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties qt1cke+mw5 j nbz)i9+of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electa hm9z,-ps-buzj4c5m ron 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 +2.00v7 nn n ,5p,:qwtxmw+fdwk09 h mC. How many more protons than elecw9d n,k,t7nmq wvwf p+ x05n:htrons does this piece of plastic have?

  What is the charge on 1 kg of protonsai-k v ,tcu *w)nah+9r?

  An atomic nucleus has a charge8b,czjkl c- ;4uuzst: of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by ik,)w c1ig ijpr/h8em/ ct+d)1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betc iw/ kgr/ht m)8 ,jiciep+)d1ween them?

  A 1.0-C charge is 15 m from k 8iya: insmneqa/47-a second charge, and the force between them is 1.0 N. What is the magnitude of the second charsiqikae /n47m n-y8:age?

  Two 1.0-C charges have a for0:t mvzwlney.f11z6w;ez zt(ce between them of 1.0 N. How far apart are they?

  The force between a cn(ft :(vnrfhn6- gt3 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N force. If theyp bnh,uhw8n+t.08 6 * djdxonv are moved to a new d0 wo p.xvb6n, 8jd*nnhu+h8tseparation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on n gjta5f.xn (4the x-axis. The first charge is at the origin, the second to the right atta (5 4.nxfjgn 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 c7s) efn/f c58 nau2k:bgo3b dthe x-axis. A charge of +2.0 mC is placed at the 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/u f3b:5csdknf n 2)cbea7g8o force which acts on the charge at the origin?

  Three point charges are located at the following positionehb j*p8tur 6ju,8ucd9g -u5os: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitudj65 *98uujhgt8-puo ecr ud, be of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of amy3lo,,rw2 y cru h40gyv)h7 -n)gnko square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N ,y-gv r4ru3),n)kocmlyoygw2 0 h 7 nhacts 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, 0.10 m); Q30dmjt3 t ;3azk = 5.0 nC is at (0, 0). What is the magnitude of the net forcek 0 t3mj;a3tdz on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q29g )h f,6yqnqu = -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,h )q6gqy9unf the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an bw5h+0(nfwgt ete( w c;cqyi5s 0v3l(equilateral triangle which measures 30 cm on a side. What is the magnitude 5yc((( snew+l 0t 3wcv0ew h;bfiq5tgof the electrostatic force which acts on any one of the charges?

  Consider point charges of/ 26kq1p(rcwjk6a nnm +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charge mk6(1r6n/jnqp2wak c s, 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 charg um(j*o5d ol)fau1np.e is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net forcea)m (1l p5*nuojo. dfu on it is zero?

  Charge +2q is placed at the origt.5e wbi6sa r5in and charge -q is placed at x = 2a. Where can a third positive chargbt.sieawr55 6 e +q be placed so that the force on it is zero?

  A copper penny has a mass aq6zv99j81)1csu wi:axkhzly i0 7wf of 3.0 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 q5 uf)c85kxn.ep4 zunforce of gravity by the attraction of a fixed proton some diqp5 58x)4 fuznnce.ku stance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hungz8d ;cug.mr0p9 wkwvy6 ho6vg-k0bt+ from a common point by nonconducting threads which are 30 cm bwmz0rv;d.u6+k0w oyc 8h gvkt6g9p- 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 chq k dwp5:fy,gfp ,2f0carge of +40e. What is the magnitude of the electric field at a distance of :fkqcpg p ,0fwfy d25,1.0 m from the nucleus?

  What are the magnitude and directionzw e,qr oipscf((fq-z2 wzjo(-8 r-t3 of the electric field at a distance of 1.50 m frqw2(rj-zfp 8-s izfe- r3o t,zq ((cowom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a smefk vvjh 1*jw ,ffeik0e/y66x ic0 /k6all test charge. What is the magnitude of the electric field at the location6vkfiwk0 jx*6cf jee hy 6/10f/ekv,i of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directif. 0u-jiu ttiuo2k3q0on of the electric field?to2-u0 qi3u0. juikft

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o;yp)5eh vpx gn d+8p/zf the force experienced8)n+dxhp/z;ve pg y 5p by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separat(,irr* rod.sx (b:ugrf.7rvp ed by a distance of 4.0 m..,rdpr.ri: rgfb(7sv*xou r ( What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at to fo58rs)rr 7qhe 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cmf)os7 8rqrro5 mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter eojlefih.po2 ,9qg6kf nhv)3/ y;,ro stick 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 ze.ekfy3, l9o j q6n,fg;ohvop re2/)i hro?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. Wh8acu2)m(yn2 rsv ts(e at is the magnituds(yan2ru2v ) c mt8es(e of the electric field at the point midway between them?

  Three 3.0 mC charges are at the thrxni 4fi2+hdp -yg8jg+ ee corners of a square of side 0.50 m. The last corner is occupied by a -i2 gf-4hx+dj8ygp +ni3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are plab;iyta 5i/e:j40:gl 1mqljp pced 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 q:b ii: 5lga4/;j pyjt1lme 0pis the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5y q*+x.2as ine.0 mC when it is placed in a uniform electric fi*y +senx a2iq.eld. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC s mdq:0qpfqs)kd1b lp t055s2has 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 j- )x6kfq w;hpie9c)ag is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the e6axf) ikpcwhq-9 ;) jball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge8 8g)qcjx yv1i of -2.00 nC. The ball is placed inside a uniform electric fiel j 188i)xqcyvgd, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 1 gr)nnxk) zap.4 meb.(k 11yo8*zkhiy0 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphexi nbyg eo41)zha .nyrk1kp ()8*m.kzre's surface?

  A metal sphere of radius 2.0 cm carries a char/vs642)ts pg ev3;fw .lmiifuge of 3.0 mC. What is the electri4gltv/u3pi )ffev w6.2s s;mi c field 6.0 cm from the center of the sphere?