State the law of conservatiu*; p/vzz3fbion of electric charge.

  Is it possible for two negative charges to attract each ot5iy) 28o e7ax)q xohwaher?

  Is it possible for a positive and a negtfa f9 l4mmdv 1k3e, jiw(zvq (h:e+g+ative charge to attract each other?

  A glass rod is rubbe3tcqsza qvq qk0(v +*7d with a piece of silk. During the process the glass rod acquires a positive charge and7tq 03*vzcq +qav (ksq the silk

  A proton carries a

  The model of the atom shsphet;p) +fz4 :iz .x)m 69tgzmn v7hnows a

  A neutral atom always wwr/sjr(ex7wh t5+grd+ *y p 9has

  An atom has more electro gg 7xea-2eq(xns than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are rwx7r5tlv y1u (klr4o64rlx.m eferred to r k7.l(o6l4rxvuy w1rxl4m t5as

  Materials in which the electrons are boundp )9 z1bdxu.1d*cxb8 ry vw1gz very loosely to the nuclei and can move about freely within the material ayd ) 1bxxwg1uzr9c1*v.bd zp8re referred to as

  A negatively charged rod is brought near one end of an uncharged metal b u1bmgk*i-qtu9y8n0 lar. The end of the metautuqmkg8-inlb9 10* yl bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, andmmdg54.yd38 qbgh (xq sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded.m53gmqd (dq4gy x.h b8 Which statement is correct?

  How can a negatively charged rod charge an e885k 2x0fu82 sa tjzkxf3njp dlectroscope positively?

  An originally neutral electroscope is briefly tx+t1ql o.l:c6orjhd4n yl5t7ouched with a positively charged glass rod. The electrosjtylt+5qhl:.rn147 co x6 od lcope

  An originally neutral electroscope is grounded b*bseik z- b1hmi+/+c jriefly while a positively charged glass rod is held near it. After the glass rod is removed, the electro+bmk/-eic i*s+ z1 hbjscope

  A positive object touches a neutral electroscope, and the le3qi0yw/ztrh u2m(+k x aves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?w0xy (r3 mqu/ki +hz2t

  A large negatively charged object is placed on an insulated table / 8s9r4bm w2tjsuo0mn. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the pathnt9s bum/8j24 so0mrw 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 , lyo* )ncj3zaconstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by e+ni 13g coja. ko(;nua distance d. The first charge is larger in magnitu1gk.o; +(jon an uiec3de than the second charge.

  Sphere A carries a net charge and sphere B is neutral. Themtdd-vi; w ; dosf*-:iy are placed near each other on an insulated table. Which statement best describes the elect * idm-os:vtwidd-;f;rostatic force between them?

  Two charged objects au h,a h x:q2jshg.u5f/3 wyk8cttract each other with a certain force. If the charges on both objects are doubled with no change in separation, the force betwes8a:3huf,ku c h xgq y5jh/w2.en them

  Two charges are separated by a distance d and exert mutual attractive forc1024fdvc43yguh j sx-i)ww vies of F on each other. If the charges are separated by a yicfvhwu3w2 4x d 1iv-sj0g4)distance of d/3, what are the new mutual forces?

  Two charged objects attract each othets. bncbdvc w:lo,,gm z4n3/ 4r 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 value? The forcb/zd4 4v ,bt noswnm,gl. :cc3e is now equal to

  An electron and a proton are separated- has,91 kwgkz by a distance of 1.0 m. What happens to the magn gz9awksk-1 ,hitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are sepai. pawf59uvo.rated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to thp uo9i w.av5f.e proton?

  An electron and a proton are separated by a distance of 1.0 mxo4s652g fgpk :qlt:e . What happens to the size of the force on the proton if the ele5::2pl o4sfxqg 6getkctron is moved 0.50 m closer to the proton?

  A point charge of +Q is plac* x/4or x,s6nx xvva1ced at 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*xxv xr vnxoc,4 sa61/ 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 thd,d)r h,nk3ml e centroid of an equilateral triangle. When a second charge of +Q is pdd nmh klr),3,laced 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 i*nqv pl4e,f6e- v9s m 5qd)afos not a vector?

  At twice the distance from a point charge, the str*qz 0l-lx x71) w:xte2aqy 4cdylcw,vength of the electric field

  Is it possible to have a zero electric field value betweenzl8qa+tkz-8/u:h/8uld wp) osv z. ur a negative and positive charge along the line joining the tw.az:d o q/w8)uzu lzl8h8truvsp k-+ /o charges?

  Is it possible to have a zero electric g c32il 4uyql)field value between two positive charges along the line joining the two chay 2ic4l3l uq)grges?

  Electric field lines near psitive poin;v4zcnh6s tyh l2)hf5 w.*bllt charges

  The electric field sho(lwo3/uoa gpj:y zcsp.rr :40wn

  Can electric field lines intersect in dap.iwxp v i19 k50h8.irz7 a3bl0n hmfree space?

  A solid block of metal in electrostatic equilibrium --vhrsc s 8rk5 06 1exskylnx,is placed in a uniform electric field. Give a statement concerning the electr1e0ss,h ksn6x--v krx5r c8y lic field in the block's interior.

  If a solid metal sphere and a hollow metal sphern27rho7/ 1wm- xyr0r1a1m ko sc.so zre of equal diameters are each given the same charge, the electric field (E) midway between the ce-1ms7/yc7aon2sro rz1 r 1m.o0hwx rk nter and the surface is

  A cubic block of aluminum rests on a wooden table in a region where ae q+5 v3i8f(fh78ui)nnpk3g xs ak.fl uniform electric field is direi nvq8f f)s(f73u.x+n ikea38p hlk5gcted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriu*hxrxf u, gpxj4 dd-gq)/o-;hm near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere t la :1e8usawyt dx3b8*hat is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the: t8au3eab*18 ydxswl hollow sphere has

State three properties of conductors in static 8sbmklgub jq)d 6t-2 ,equilibrium.

State Gauss's law.

  The charge carried by one electron. :jl*plx a(7p tfabl0 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 thanp*3wgz(g5c uhuxah83 electrons does this piehu(h8ua5z 3 cxp *wg3gce of plastic have?

  What is the charge om d4b8 qo2/mfkn 1 kg of protons?

  An atomic nucleus has a ch h;j0r 3y gsgipn(y+ol 9lx,(varge 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 ngaw 68xgl *7njm ; zfk1k)p7uvalues of 2.0 and -4.0 mC, respectively. W n17m w)8lkngp*x;kgja6f7 zuhat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a se3qtpjwzz)i)8 ,x5dbf7zn6 w. gdhf ,fcond charge, and the force between them is 1.0 N. What is the mag3gh xfz5qp,tjndf. w w)8b67)izdzf, nitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?wb- t(vzqr /,j

  The force between a lpz6djk 00n 2d/-sgli :2)r givkme8 n$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 -:o fazc3:1i0zqaj ykzp.;by cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, whpyao10 i -:3zcfyka :zz;q. jbat is the electric force between them?

  Three identical point charges of 2.0 mC are placed on.ecuikx2-q ,s f) ym,cji:, fk the x-axis. The first charge is at the origi 2i)f-j cksxk ,icfumy,:e. ,qn, 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 charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed at 5 tdqiuj 9ty7 cx41gt2the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at theu5xy qdc 9t214g 7ijtt 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 po bkzgo:6/mf m-sitions: 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 magnitude of th:mb k-of6/zgme force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a squar x2ao v,bz.-gi ,6gxkke, 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 acts on the positive charge at the center. What is the magnitud,2kb- .6xz k viaxgg,oe 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 = :hg)bu esn;c2. vvmdjziz; .kg;m, 3l5.0 nC is at (0, 0). What is the magni):2gbdkj;.gcz z3ium esvh m,v .;nl;tude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.1)st9 1:sqe;bqwfq xa- 0 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 -w b q 1:s)9eqq;faxstnC charge?

  Three identical charges of 3.0 mC are placedr6fhg+sp vf6 /,6mo ud at the vertices of an equilateral trianpm,ur 6v d h6o6/sf+fggle 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 se-ixybcq:+ 0j z *:dvrfparated by 3.0 m. At what point, on a line be+-f0y*cd rx:vjbi: qz tween 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 fz 9 q eew96/t9 dtcgs8-f:nxtcharge is at x = 4.0 m. Where on the x-axis can a third charge be placed so th9 z/x tg f9cfw d-s6ente89tq:e net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wh(5g,oe qlwr x4w)h2c gere can a third positive charge +q be placed so that the forqo grcwg wl),e2hx(45ce on it is zero?

  A copper penny has a mass of 3.0 g. A totalw zx5lt 6l3zedp. 9qmc 73s:kc 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 7q q+dze21nh-k nsuo +the attraction of a fixed proton some distance above it. How far abonhn21u -7kq+q+oe sdzve the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nofg 1vdwjj0kbmt 8 iz43.n+3p)h0jo c snconducting threads which are 30 cm long. Both are givd.4hjng z3o+pmb0js03v 8 j w1t)i kcfen 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 +40ew,djld b7d;( m. What is the magnitude of the electric field at a distance of 1.0 7 dd,lmb;(dwj m from the nucleus?

  What are the magnitude and direction of thecz p9m.c4r:nvi2.s h a electric field at a distance of 1.50 m from a 50.0-nC s v2p.hzricm.an:c4 9 charge?

  A 5.0-C charge is 10 m from a s qfv yie:6qov:*ps-m: mall test charge. What is the magnitude of the electric field at tp:v qf6mi:-*e oysq: vhe location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What myau h8w23j 5iis the direction of the ele 8ay5mwjh2 3uictric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thej306t sn.yg)psu us cv(usigd w8(a4; force experienced by a 1.0 nC charge placed at the location((uduy34g) ss.nj 86asuwv 0cigt s; p of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a dif tne-rqmq5:p,ns 1r 5stance of 4.0 m. What is the electric field at a point midway between thr1-m,tnr qsq pe5:5fn e two charges?

  A 5.0-mC charge is placed 6(j7 wecgj9aczo*r4dat the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. od*(674a z cjwj er9gcWhat is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at tdhv up:*+y8f d. k)hnche 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Ath.yp*c v f)unh+d:dk8 what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC taoyzp++ls uc f7q4*) and -7.0 mC are placed at x = 0 and x = 0.20 m. What q+f7 4os )ucz+lya*ptis the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three cornersktjo(+dq 5u62ny+xbhn 6 s5 kc of a square of side 0.50 m. The last corkdkun6bcj2t6q+no+5 5 (hs yxner 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 m on a side. Charges are placed at xlxh*/cwx 03js0g tr- the corners of the square as follows: +4.0 mC xhx/lg3x*s0r -0 jctwat (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 lpc 8cj,cm +: bt-vxfhp*;qf5is placed in a uniform electric field. What is the magnitude of this e vbmjqp ,*hc8:5f-txp+; ccl flectric field?

  A particle with a charge of 4.0 mC has /+4 mk,hknt gzr jxi.9a 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 f nkgtoy*bd;. 9ield of 6000 N/C pointing ydgn*9tk o.b ;downward. 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 nC. dfvfg*ft- e*6 ;sw) ws The ball is placed inside a uniform electric field, and is suspended against the force of gravitygsw-fvd)f*;sf t6e w*. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chargehbicp6 50n ak:4kuc-c of +2.0 mC. What is the magnitude of the electric 0n4:ack 5ih-kubc pc6 field 5.0 cm from the sphere's surface?

  A metal sphere of radius+njk)z sgh01 owpxhnxn+,*4c 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the +0 h cpgx ,w+njokx14)hsn*nz sphere?