State the law of conservatn* 1iu t 3abzc//hafxwx-4n 3bion of electric charge.

  Is it possible for two negative ch ji11 uj1y queol:5tw+arges to attract each other?

  Is it possible for a positive and a negative charge to attraljya+.n1/s.mr :r;uj hm3tslct each other?

  A glass rod is rubbed with a piece of silk. fd5qaq r4 */s(hmd, ov During the process the glass rod ac*adhqqs/,fro m5 4(vdquires a positive charge and the silk

  A proton carries a

  The model of the atomcl p6+n 5 xntntrd8sw3 qkj;8* shows a

  A neutral atom alwaysda 5ba-(87 vyxwyz3u hsa9x(x has

  An atom has more electrons than protons5cgda/f: i7zi5nyk3m. The atom is

  Materials in which the electrons are bound very tightly to the nuclei yb (rp0 9ucpcr gjpw*,3x2+opare referred *0g2(,3wpb c + o rpr9juycpxpto as

  Materials in which the electrons are bound very loosely to the nuclei amqj bmt(,:p6 dnd can move about freely within the material are:(bmtp dmq6 ,j referred to as

  A negatively charged rod is brought near one end of an uncharged zh 5xfd+;aktwke 9ii.:d/4 znec x+j6metal bar. The end of the metal bar farthest from the charged 9x:x ;ed j eidk .af+w54/icnk+hztz6rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutm b uy4lhwf :p5*5cp5wral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is ph*mw4:5pf 5luc5 bwy grounded. Which statement is correct?

  How can a negatively x0f c5jp(o6 1p:ev9jtmc3asnl t( zz9 charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly tdh g6*ge6dcg;jw*zdt -p10vwk+ 4li s ouched with a positively charged glass ; d6g kg*jp6dl+vcd g0wz1*-4 iwesthrod. The electroscope

  An originally neutral electroscope is grqx 56.4rsbqty;18exo a4kj viounded briefly while a positively charged glass rod is held near itvsqkqj.e;oxx4 r 5b 1t4a8i6y . After the glass rod is removed, the electroscope

  A positive object touches a neutral elec)v+(m9y(3wy cju 2e.eux ewdctroscope, and the leaves separate. Then a negative object (cw )w9 udye+uyc.vxmj(3 e2eis brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an sc/cqp e/ t)gy9y,/fuinsulated 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, strikecysye/ ) u/c,qt 9/gpfs 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 theiugqh 0 fn+ ;qj:6ca: /jhd1ud Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated lg);j+ n+gd(dv8u rjr by a distance d. The first charge is larger in magnitude jl;n+ )gjd rr(8 uvdg+than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They arfn.ncv fd wpq*k -;*cp7 ,pg,xe placed near each other on an insulated table. Which statement best describes the electrosf,x.;pd 7g *pvn k-,ncq*wf pctatic force between them?

  Two charged objects attract each other with a 36zljg ke1up2y eil;/certain force. If the charges on both o2/pe;l1yej gz3k liu6 bjects are doubled with no change in separation, the force between them

  Two charges are separated bygy4vc gmnfd;9. :i8em 46hsfv a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a div s.fc :vehfd4yg894g6mi ;nmstance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F )xof0lcbvsmz(2 ( k1q. What happens to the force between them if one charge is doubled, the other charge is tripled, and the sepabofq20(mxs kl) v cz(1ration 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 1a nl7 6fsen1 4a9n)mkh.0 m. What happens to the magnitude of the force on tha 16ehfsmnnk4al)79 n e proton if a second electron is placed next to the first electron?

  An electron and a proton aebw.fx 5 a n(810lzpewre separated by a distance of 1.0 m. What happens to the magnitude of the force on the b.5f8 ep xl0n w1zewa(first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens to 5wb4xhl gvy 27the size of the force on the proton if the electron is moved 0.50 m closer to the pr54hv7x yb l2gwoton?

  A point charge of +Q is pl 61dkrzx avm h;*6lv:4xza3jp :qxd0saced 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 the squa::0avlzvkpqxz*sx 636rm ;4 d h daj1xre'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. Whq gj1990q k5pgqsr0axp3ow j+en 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 ce gapxoq0qk+jj93 0 19 rwqp5sgnter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is xioos+ yu398scp9 roy 0o-ot1not a vector?

  At twice the distance y sl3kjq7o79e7.fmh rfv 7jy /my)uw6from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value betweet98b xx;gwp8-n8 s xgen a negative and positive charge along the line jo88nxtx9; gg 8bes-xpwining the two charges?

  Is it possible to have a zero electric field value between t q0bpp;r k7rr f(no/j:,sdk +hwo positive charges along the lifr: 7 pkrdph,rj+k/;qn(bos0 ne joining the two charges?

  Electric field lines no hy4-futxkd2 0zdg,6x* nr )rear psitive point charges

  The electric field showuta /peykz s2 5ji9 x1a ,/sm-jg6dwq7n

  Can electric field lines 6 (bhmnhlg w.*sk :18238xtpayb dntyintersect in free space?

  A solid block of metal in ct87jqzhx2 /yk* kp.a electrostatic equilibrium is placed in a uniform electric field. G/ yk.8h j7*tcxkz p2qaive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diame+ z-.0n s4zjod5l -rmbmhk yo9ters are each given the same charge, the electric field (E) midway between the center and the s4sjzy5 d b m-0oznh +9lomr-.kurface is

  A cubic block of aluminum rests on a wooden table in a region wherqc2 ;s3qei k,je a uniform electric field is directed straight upward. What can bes3 cjk,qqe;2i said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equil-:m6 zkhrh5 k ::wcub3xvj8to ibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere w9ku td ym :7mf-y/z:qthat is grounded. mzq:-ydy wfu/m:7tk9 As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties ofe32no a opcl;7 conductors in static equilibrium.

State Gauss's law.

  The charge carried by one e-+vw,q1vh sgoen,. zzlectron 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*.0 hgcuql,puq zi5*: vo .xzo electrons does this piece of plastic haqquo** cxhuv.z0i g,l :p.5ozve?

  What is the charge on 1 kg of pcu. so; bsf6-nrotons?

  An atomic nucleus has a char*cj1tw1fk uq 5ge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separasrzr35d4 6 mpmted by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is thedrpmsr56 4m3z magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force )nqs lh1 b2aa*between them is 1.0 N. nq2h sa 1*a)lbWhat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apan* 5:uuni.j eert are they?

  The force between a wp+btzj:4+7*qe ta4y4snal u$30 \; mC$ 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 1.0eo. hha(-c v) 8u-cflh-N force. If they are moved to a new se8h-hf. -ule oc hvca)(paration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first ci)hnt/u78lp 8 zc 7rgmharge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. What are theu8g th)z 7lcp8/7rmn i 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 pla(3 bxkbydew qyc -h5:8ced 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 elecyyh d5(qk:bx 3b e-cw8trostatic force which acts on the charge at the origin?

  Three point charges are located at t*0ahxmnp 1:yj 76kx yghe following positions: Q1 = 2.00 mC at x = px6x0:*y7k g1 jnhmya1.00 m; Q2 = 3.00 mC at x = 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, and a second poil9v o:j y)if39uhij2m nt charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the ohm i) fv2li39 j:9yujpositive 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.f +q+ tn j7*k(cdmap3l +u//j sq6utxm10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force3/t 6ut(l* +js /c+ pxu7f kdqa+jnmmq 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 uev u16vk0lf20 m); Q3 = 5.0 nC is at (0, 0). What is the direc6kvuev 1fl0u2 tion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of ao t-blz6g1bg3fz,: j un equilateral triangle which measures 30 cm on a side. What is the magnitude ofjl3f-1gzug o:,zb6tb the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At wed 8thoa(:;g e7rj w-shat point, on a line between the two charges, would it be possible to place a charghoa: d8;stj 7rw-ge(ee 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 ctbd-hklebuir7s. 5:6 harge is at x = 4.0 m. Where on the x-axis can a third charge be placed so dlhk 67i-5 bs:rbut.ethe net force on it is zero?

  Charge +2q is placed at the oriordy:z m( pb3z7v;v hs t2xf+4gin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so th3xdbz;zo72v(hv+y rfm:4s t pat the force on it is zero?

  A copper penny has a mass of 3.0 g. w .)t7 1 3dwcs7peebzfA 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 force of gravi+0c) *ei7dpabrp jy. bty by the attraction of a fixed proton some distance above it. How far above the ba)pi7e jryb*.pc0d +electron is the proton?

  Two 0.20-g metal sphes9*v;scz ,(iskg 3xb cres are hung from a common point by nonconducting threads which are 30 cm long. Both are given 9xsiss; *,kb(vccg3z 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 charge4z8ise cgsss5 fc5;1sncqv 6+z* goh rlg0;l 6 of +40e. What is the magnitude of the electric field at a distance of 1.0 m frovssls;cc51ois gf6l 8r sz*gqz 6ge0 h5 4c;n+m the nucleus?

  What are the magnitudja 7ea)zn cf 5eciq6nd+20ns5e and direction of the electric field at a distance of 1.50 m from a 50.0-nC char nc+ 0as7qe25fnj5zdc)e6 nia ge?

  A 5.0-C charge is 10 m from a small test charge. What is thef0y:9y)d:uq(d nh pta o2y*zu magnitude of the electric field at the location u0 qo9:z(fy)a:n2ydt yhd u*p of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What isqnv3lx2yrh- +qy6;t )w0lu 4mqa m;od the direction of the electricy 3tq xom-lv4+m 2);q0awrldu nh ;6yq field?

  A 5.0-C charge is 10 m from a small test charge. What is the magno kd+h h8z* *m+acf2 7jynrgzdp*z ef.a-o +q/itude of the force experienced by a 1.0 nC charge plf8*ycg eqj+dmhk.hzn+ o/27az+ o *ra-* fzdp aced at the location of the test charge?

  Two point charges each 51fh(egbtkm (have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric fkh(mfge t 51b(ield 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 -4.0 mCe4j+wr42;gg /rzp qno charge e/4gg wo 24npr+zq;j ris placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm ma(axb j n7qpqs8y(a68d rk of a meter stick and a -4.0 mC charge is placed at the 50 cm marajdsqn(8bx8qay (p76 k. 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 a)rf /:.upbd62s s(*wyieyjp are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the poywf./b up)sr*:2jpa yi (dse6int midway between them?

  Three 3.0 mC charges are at the three corners of a squaribfo( 1cn xa63bq in9(e 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 sqi 9i on6(b1qxc3 abf(nuare.

  Consider a square which isczl wy-3 4ug)d 1.0 m 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 electric fiel g)w4y -u3zdlcd at the square's center?

  A force of 10 N acts on a charge :wn:i*jg7oay of 5.0 mC when it is placed in a uniform electric field. What is the : *g:7wjioany magnitude of this electric field?

  A particle with a charge o6 pvy:ns(c st)f 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 a(3c 2n klzjk5+d9ei/q x9r)9 zfp+pjbcsd9ybn electric field of 6000 N/C pointing downwake9sc iy)5 9 jqrn3 lj +bkd9/2pzx+b z9(fpdcrd. 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. The ball is2-d a ayn t,m+zv+y3c phf8vv1mdj)s/ placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric fita3 yd, zm 8dchy+v/ns)1jp+ vf2- amveld?

  A metal sphere of radius 10 cm carries a charge p.wfbqiy h-j.k4d n24zg , d;mof +2.0 mC. What is the magnitude of the electric field 5.0 cm fro dki-,h.j2z bd4wf.qmngy ;4 pm the sphere's surface?

  A metal sphere of radius 2.0 cm carries a c2j c d76w rac0.c;tqvxharge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphcac rxct.7wj vq ;26d0ere?