State the law of conservationk+0 1+mfzczcf of electric charge.

  Is it possible for two negative charges to attract ea h3 m+l dgle89)eciey2ch other?

  Is it possible for a po5qelr k2w8 h3q 4zq:wositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process thepm 8 hp+; zsq(hrmmq6; glass rod acquiremh+h(68q;r spzqm mp ;s a positive charge and the silk

  A proton carries a

  The model of the atom shows 3g5:k08r sgocm4 gl a 4tpcde*a

  A neutral atom always ny.c wjq)ynth;,o.x : has

  An atom has more elect1 gk+ h rob90tf,c3oltqzq+ +zrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nucw pq4pfin1 pwj22m*53qvb3)wlar u g7lei are referred tojppmv2)251ir4p 7fq u nw3a3wblg *wq as

  Materials in which the electrons are bound very loosl.q+y jgq2d-u ely to the nuclei and can move about freely wi . +2djquglq-ythin the material are referred to as

  A negatively charged rod is brought opcq 6 3lzc-.ynq(a /xnear one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chz-(lxca3qpo6n.q y/ carged

  Sphere A carries a net positive charge, and sphere B is neutral. They an yxdwkq; o* s:sw6)9cre placed near each other on an insulated table. Sphere B is briefly touched with a wicnq)d *yw k:9 ;s6owxsre that is grounded. Which statement is correct?

  How can a negatively charged * jxm:a/afsxh 8cw,b0f -(w6uhf ,zdwrod charge an electroscope positively?

  An originally neutral m:*wx*eeluekf /98 :tg *wycdelectroscope is briefly touched with a positively charged glass rxy:em9l e8/kfewwd tg*c** u: od. The electroscope

  An originally neutral electroscope is grounded bo4uo 3au w(b/ : tdftog88esk:riefly while a positively charged glass rod is held near it. After the glassk8 bo: u dst/wg83o4tueo(a: f rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separagj8 ctakvlupd ayjnv.6 )./) 0te. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?.d.aljg)v n) uvc80 p/6tjkya

  A large negatively charged object is placed on an insulated table. A n65a d8w4 *w.:r9 ipmwkqsj mppeutral 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, stri 8*a6w:. pr4p9k qi5dpmswm jwkes 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 constant cyt.*x*3ntag3 la /nz$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. T0qujx df ii7y)7ocew24s1q o;he first charge is larger in magni14xsf ii 2oe qoc7wq7y)d0;u jtude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed ne daf dk.e /l+v8ncil58ar each other on an insulated table. Which statement best describl8f nd+i 5dckv8le/ .aes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the cha0 sddc*b2u 9rpn,cxr ed 7fd23rges on both objects are dode2r spd fcr 2db9,7u0n*d3xcubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attr :b+t5hrms;cn 2j(ht (gdopq 2active forces of F on each other. If the charges are separated b h:bcpm5; nj2 r hd(+qt2o(sgty a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. 8 ,vfa-bqiomt5d:+ lz What happens to the force between them if oneof8 :5b- avzt+l,qidm 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 equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens to3,8q mt+jzs 8c1kie ai the magnitude of the forc q3mis 8ecjzi1ta+ k,8e on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Whagk5- (4f2a zmuf9 h tt mebr+q. )7adrs.r6evrt happens to the magnitude of the force on the first electron if a second electron is p(d tkvah69.- 5u.rm gea+ b7qte4zrfr2m)sr flaced next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happvn /n5slta x)y/y, 0zaens to the size of the force on the protonvl, 5nx aay)y0t//s zn if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squ+b-- hvzx -*a 4wl9otpkyofkq0.ts9uare. When a second point charge a t yk4-.q+htvx*9o fuws0bo9k--l z pof -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 the center of the square?

  A point charge of +Q is placed at usr(a:+ k q4r2qq 9hdsf.wgk3 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 gqr sr:f+h q4.kw 3 9skdau(2qon the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is nl8r0a2oi a,h.i : ifua:o +lkmot a vector?

  At twice the distance from a point charge, the strength o)65u qgym3k4ue 8uk, q9tgzsr f the electric field

  Is it possible to have a zero electric field value bet2,w f7t6zoe u jm/pmzzy 453vlween a negative and positive charge along the linewoz4mz 5uf26/z,3evmjy7l t p joining the two charges?

  Is it possible to have a zero elesnk hb5 +)uuv;suyyt3f r /4q(ctric field value between two positive charges along t +y3sbu/4 ( uu)tq5fr;ynsv hkhe line joining the two charges?

  Electric field lines near psitive point cha2rjp hgp0 4l0rrges

  The electric field shown ik-epo3y.ntpz4k;1 0 io rat9

  Can electric field lines intersect in fre8ui9kq /bz,kzu o74 w6ngere8e space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elezmvyq r) /f)o(22 wcnkctric field. Give a statement conce)2)n/(2zqkowcrfm v y rning the electric field in the block's interior.

  If a solid metal sphere and a hollowoqu crao)r( -7l ,mbr5 metal sphere of equal diameters are each given the same charge, the electric field (E) midway between thc) bul,a5oor7 (r mqr-e center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform eap5k 5/ 3w3; o;s rb;mxm+ld rqpzn3welectric field is directed straight upward. What can be said concerning the charge on the block's top 3pq /lrm3wa ; odkm znw5 ;3sxpe5b;+rsurface?

  If a conductor is in elect 1r+u 7hnbzewi45vbfj f39l9rrostatic equilibrium near an electric charge

  A positive point charge is enclosed i;iyf2-*zxo pu 8e p9itn a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point *zx8oip pf2ey; t9iu- directly above the hollow sphere has

State three properties of conductors in st bx8fh9 t-n1ctatic equilibrium.

State Gauss's law.

  The charge carried byhrk9cwd. *) rwj0uf9l one electron 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 thanbw -b)7qip2ai electrons does thi-b ibp2 q)7awis piece of plastic have?

  What is the charge on 1 kg of protons?dwpg7 hdw:d 6*

  An atomic nucleus has a h)2zg7n/.wsiyz w qip -ut(v7charge 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 values of 2.0 a63xzxz;6 k jcznd -4.0 mC, respectively. What is the magnitude of the electric f cz;63z 6xxkzjorce between them?

  A 1.0-C charge is 15 m frf,;--eg ik pgrom a second charge, and the force between them is 1.0 N. What is the magnitude of thek,ei --rf; pgg second charge?

  Two 1.0-C charges have a force betweeh psrv(rt+r:7i,khl / n them of 1.0 N. How far apart are they?

  The force between a in. oo);i a*hg m-v6o+u yrb(o:5ejbq$30 \; mC$ 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.3b(4 qu7at)s1ax sf ei If they are moved to a new separation of 8.0 cm, what is the electt(f)1axa73esusb4 i q ric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fir4bxw: kz5v bgi ex p:n(9lp04rst 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 thelip0bk b9 :x eznv4(g rwxp:45 charge at the origin?

  Three point charges are placed on the x-axis. A charge of + .oxkslofg/ ;l79urr +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 electrostaticfrsor9. uglx;/ ol k7+ force which acts on the charge at the origin?

  Three point charges are locaob c.j *x)wb(lted at the following positions: 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 thlc(.jbo*)xw b e force on the 3.00-mC charge?

  A point charge of +Q is placed at v3t swcs2) qx1the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic 2st3qwx)v1c s 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 nCddj6 qiv3p c/ld--bn8 is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0)n-qv -c8dlpd6d bi3/j. What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m,t/lt3yd(fi ycdo- v)1 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0 dv/y)dtl3t (cfiyo1- ). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at thec lfd6hi+8c* qzn42v;k s6cif vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of6sv+ichf c4n6l2; kd zq *ic8f the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. Amd 0 vhbrc7m3xpek +wj- 9os7+u/ w*xwt what point, on a line between the two c u9xhmk7oc3 xpr+svd/w 7we0jb * +mw-harges, 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-v :xk uvs.j(xh-/6tn bsk 2u6rC charge is at x = 4.0 m. Where on the x-ax2 xhr jx( v. s-6ku6tvkns:bu/is can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the orioo; sie)(/jcrgin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so je (cr /si)o;othat the force on it is zero?

  A copper penny has a mass of 3.z r-c;g a/ sf2;xzt4gw0 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-j az x8e/i9 lo2i+p85ldy0)ctrt ety force of gravity by the attraction of a fixed proton some distance above it. How far above 5-l+8l)t8rdpj t/ 0tc zoxayyiee 92i the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point39 llt; 4i.zvba omk72lbd-im by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apar izi. kldb7; al ml4v-m32bto9t until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a cjt uw sw;tmm9/l(6h8mharge of +40e. What is the magnitude of the electric field at a distance of 1.tshm9l8 t /u;mmw6w (j0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dista vvgq 6z:hlufag q*c ut(jhn,)v16 i7:nce of 1.50 m from a 50.0-nC charg(,:vg hvfzcatuq hql: 6u1*n )vg6ij7e?

  A 5.0-C charge is 10 m from a s d3jeb t10dw.c1(jd) 5wsfz ubmall test charge. What is the magnitude of the electric field at the location of th)3js11eu0wdzd.dj bc 5(bf wte test charge?

  A 5.0-C charge is 10 m from atbnvl*,*a:k)9t 7ivd /6ge(ah q.wu sqf cs-s small test charge. What is the direction of the elsv ncf*bkq. :as/ 79hwuve dq,ti) -(gs6*atlectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magni)hz advk30o tj 6zb,.etude of the force experienced by a 1.0 nC charge placed at the location of t 3.)6atbkdhv eo,jzz 0he test charge?

  Two point charges each have a vycp:v h5/y1aw;/r (jvq /bc/xi+jwkj alue of 3.0 C and are separated by a distance of 4.0 m. What is the hj /kj vcy(y:bvc/a pq;/w1xijw/+r5 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 stick and a v;)8aw/ t:e,7ityg hqh i r;iv-4.0 mC charge is placed at the 50 cm vr7yt/giwhit,;he: v ia)8q; 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 stick and a -4.0 mC c7his 9(g5zcbwiuz8a 4r ir3 k(harge is placed at the 50 cm mark. At what point on a line joining the tw i7r k(bcgs8i z4rah3 5z(iuw9o charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are p( gwfg4mh0s4)y w-mnuhyr m*:laced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between gwu:wrmy*4m0(-h 4sfmh yn )g them?

  Three 3.0 mC charges are at the three corn4e2xlq n+c2 ygers of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge.2l gx+ qency42 Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are pz1/j z a)fvg mnf5f0u0laced at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at z0u5fa1 fm0z) /vnf gj(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 a uniform5 f;t )3hr wi n8fyowpjp*z4b5 electric fielz nyfwt5);j58 o fprp*4wih b3d. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass o 0mlw zf;cfv6)zhr.wm)d8 g.nf $5.0 \times 10^{-3} \; kg$. 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 electr+uj9z sp4dor /ic field of 6000 N/C pointing downward. What charge must be placed on the ball for it to b+sr oj 9d4/zupe suspended?

  A foam ball of mass 0.150 g carriegx8w e.z v,kb .rpux-whjo v;x)q.23hs a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the fopg k. e)3w.8,uxwxv-jhrq;2 zovh.xbrce of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Whvq oe7/yomgel6zeek9u9 47j ) at is the magnitude of the electric f7 oyv4 6k 9z7gee lee)m/uqoj9ield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC6ek .b c)foryv1culli 1, z)p568bfl x. What is the electric field 6.0 klr)1flbf )pciy 1.zc6x,e ou8v5lb6 cm from the center of the sphere?