State the law of conser) d6**;xsavxcwbqy4:y -k nh pvation of electric charge.

  Is it possible for two negative chargeshzpf4 g ( bzx;55.:j4cr vnshk to attract each other?

  Is it possible for a positive and a negative charge to attract each ywt68 ftg 025mmgs7jmother?

  A glass rod is rubbed with a pie b (qrkn(eolv +s zguo)(q9sq0vv7: 2pce of silk. During the process the glass rod acquires a positive ch:lq(bo+7vvn0s zur)2qv(eq s(g9 ok p arge and the silk

  A proton carries a

  The model of the atofi o: z7ayhf2:m shows a

  A neutral atom alway214lf8 z4 6ohgh6u7ulhlv lovs has

  An atom has more electrons than protadicqzr/o1z f. i v1hg4i(0e-ons. The atom is

  Materials in which the electrons are bound very tightd9yffu.j b5 zua 2fx0:ly to the nuclei are referrf uu59byfaf .jdx 0:z2ed to as

  Materials in which the electrons are bound very loosekdxm-am i7 ykydt. r7,d4a1t:v7u8agly to the nuclei and can move about freely within the material are referred to a7vtyia7rdmd k. a: ,8 a- t7ykmud4g1xs

  A negatively charged rod is brought near one end of an uncharged meth ls --ux2tmg.al bar. The end of the metal bar farthest from-ht2sgu. ml x- the charged rod will be charged

  Sphere A carries a net positive charge, and ay n r7v7 rr0;rhwgy8.sphere B is neutral. They are placed near each other on an insulated table. Sphere B is 8y0rrrh7n ;rv.awg7ybriefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge c)rnopx kuj*5 f+jy;z - 5k5rvan electroscope positively?

  An originally neutral electroscope is brief vomg u5-i:zh.m 7l-0zlvb*7n -d nlanly touched with a positively charged glass rod. The :b lvov m*zu- nimann7d0lz-.7- h l5gelectroscope

  An originally neutral ele3 82(- ie5wvpzntxy)tz.urawctroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, eytru-z) zxpn.8iwv53aw(t 2 the electroscope

  A positive object touches a neutral electroscope, and the leaves separatx4 :uogwsx )w*:3 wrfve. Then a negative object is brought near the electroscope, but does not touchwxw v) :osr3f4:w*xug it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A8l:h8v/k 23vxqo3a nsexrf-p 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 doesasefl28rh8kv 3xqn-ov3: px / 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 /(h b*jx90dlqriv(o orwr0t3 $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Th6d ,fo jc+0;luerlj)fe first charge is larger in magnitude tha )dfu l, l0foj+j;cre6n the second charge.

  Sphere A carries a net charge and sphere B is neutra6 w,ckpww (uzy 7u(4iql. They are placed near eachq (4w6kz ,cwpuy(u w7i other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain zhj /juqs3xf.o8)+ nf force. If the charges on both objects are doubled with no change in separation, n3f + z).xq8uso/jhjf the force between them

  Two charges are separated by a distance d and exert mutual attractiv i zoxsbu-q++*ft rm/;e forces of F on each other. If the chz+ftru i s mxo-b*q/+;arges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What haa.1(xbxgar7 e9 ab- yappens to the force between them if one charge is doubled, the other charge is tripled, and the separation distaxxb aea -r(y1.9abg 7ance 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. i /)q 7deawjz/ What happens to the magnitude of the force on the proton ifjaziq e)/d /w7 a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 z8r 03q8 ial.ahpwv t)m. What happens to the magnitude of the force onaiv. hl0tzq8a3)rpw 8 the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a di2x +f(dme(wt ostance of 1.0 m. What happens to the size of the force on fe(d(t+2w xomthe proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a secpl , 1suosj )sixv,gy)ody::9ond 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 square's center. Now, identical charges of -Q are placed at the other three corners of the square. What is the mags j:v)g9u,lp)xdyi soo s1:y, nitude 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 equilly*d 4.wk n7uqateral triangle. When a second charge of +Q is placed at one of theuy7.*qn d w4kl 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 gild 2d e-). qec*fwc8.yw2xu is not a vector?

  At twice the distance from a point charge, the strength of the electric57:m. tj 8ba rikh:gsl field

  Is it possible to have a zero electric field value betweezx*d zaae0tw,z s *r3)n a negative and positive charge along the line joining the two c)sr taz0 *3 xz,*dazewharges?

  Is it possible to have a zero electric field value between two positive t*zmp 6(o mg4,7emrwecharges along the line joiningm7etwgo46mm r( ezp, * the two charges?

  Electric field lines near psitive point charges, zyl)t+p-vng

  The electric field shooy;rr +7 5 yjz kjemj*xgqst34mu:-.uwn

  Can electric field lines ibaa 9/y0f:m1 p,smncwntersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in agw 1sgg4p fdt04 s7hatj8p,g - uniform electric field. Give a statement concerning the electph a440d7gws1jtps8,gfg- g tric field in the block's interior.

  If a solid metal sphere and a hollow metal sp.o*f oo/xs:4z/,hx1yxsqz ag here of equal diameters are each given zq.xxs/:,fh1sgo*/ ayxozo4 the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a ls2 ys0 ad6w.gregion where a uniform electric field is directed straight upward. What can be said concerning the charge on t0.6w ga slsdy2he block's top surface?

  If a conductor is in electrostatic equilibrium ne jotpudx ;-h*mgp4*fa :ge7j;ar an electric charge

  A positive point charge is enclosed in a hollow metallic sphere th/( r84azusrlx+7au qzat is grounded. As compared to the case without the hollow sphere, the electric field at a po urxa 8r74(qz/+lzaus int directly above the hollow sphere has

State three propertiesh . v:d9lpqj2i of conductors in static equilibrium.

State Gauss's law.

  The charge carried by33y8xbgyixyc( v*x c1 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 mxyn62y :ktttl zu;-h2ore protons than electrons does tht:h26kl ;yyt uxnz-2t is piece of plastic have?

  What is the charge on 1 kg of pr6oz:fp-1 o+u/nh b ujgotons?

  An atomic nucleus has a charge of 6oehb:*y)v wkw3ark. $+40e$. 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 and -4yrf74(5 tuakb.0 mC, respectively. What tu5ykb4far (7is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m frouu8o6f,hok j 9m a second charge, and the force between them is 1.0 N. What is the ma8 u,ufkh6jo9 ognitude of the second charge?

  Two 1.0-C charges have a forftw:4tthh : ,vag wp2z 5+rs6 je*4dthce between them of 1.0 N. How far apart are they?

  The force between a - /.yvskw,upx* g w0q-ytq5 zz$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiwyyg7j(t8 rd: ho c :rp)57azbally 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of d oc) 78r5(a:yth 7z rpjgb:wy8.0 cm, what is the electric force between them?

  Three identical point charges u8/5 rez-z8f gpdp9/ pf6h6ml udr)msof 2.0 mC are 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 9l rp-uup 6zr)hz86m/ff 85sdegd/ mpacts on the charge at the origin?

  Three point charges areiynt2(i xb rw;1m+.td jh 19en placed on the 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 102irey1 .h;19m n+d ti(w xnbjt0 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 positin,x*q ,vov-j3dkw4xo ons: 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. ,*vnokv,3w-qdox 4j x What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q (tc f j84e jc5eg xutky7h7:4kis placed at the center of a 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 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-lef jy57ekxf:(t4ujtec c g7h 84kt corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0,*hefsi t5a* sa/md l6. 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magat *h*. as6i e/dmsf5lnitude 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 ( t r/h22ilo+hz0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the ri2z2hl+h/ to 5.0 nC charge?

  Three identical charges of *oe* (syy)g dv3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a si(y)g dveyso **de. 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 separated o tb*:kw/a-x jz -atb;ha46sf by 3.0 m. At what point, 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 za /a;oaz x -bkhbt*6wjs:f-4t ero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m.g.vugbr9 ;u- l0 xu2nw Where on the x-axis can a third cgrwu2b9xnl uu;.v 0-g harge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x =;9mx(mktj8plc wh- v8 2a. Where can a thihwcj v9tp-m 8kx;(m8 lrd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. Az 9sa2kh(; udl 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 agains: 9 *mccktj.)g otn-kva1frh:t the force of gravity by the attraction of a fixed proton some distance above it. How far abocc. rmatgfh* jk-9)::t v 1nkove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by:9bxq of 5:rul nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angubl: : rqo5xf9le between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What i3 p.9rq bpnk7oejiy.d 3sns/1s the magnitude of the electric field at a distance of 1.0 ms3n.s.3p7b e i1rpn/d9joyk q from the nucleus?

  What are the magnitude and direction of the electric field at o7q3blhuwc9 g2dn3t,w s9 ; + ygqr.taa distance of 1.50 m from a 50.0-nC chgdhqr 9tu3 y,s+gab 3l;cowqtw72.9n arge?

  A 5.0-C charge is 10 m yx(tp ll)v)+ )sl pg1nfrom a small test charge. What is the magnitude of the e x)))tpllns pv g(y1+llectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small e d1k-9 s.1hyz 1tww97tvlducj )*ywptest charge. What is the direction of the electric fyw -) elt11sh zw y9v9t7pd wu1d*c.kjield?

  A 5.0-C charge is 10 m from a small (q1.. /spikmsktx:(s hl fso) test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of tl:((o.hikks s tm/sq )xfs1. phe test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance ofeza gzdg.+1e82opll 46ksu z 9 4.0pd. gu eze8zalz2 s4 19kg+o6l m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm marko )v6vrc r*vvg/gv/n 5 ql;js5 y5b4iw of a meter stick and a -4.0 mC charge is placed at the 50 cm mav*5svqgv5 r/wig4r/ cl)vjy6v o b5;nrk. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at txa1 itdu*q3e 5u *x y,bwm0xq:he 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line 3y uaxt5i m1bq*d0x:,*ux e qwjoining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mji ja si7 2) 8*v/meccyq/f0aoC are placed at x = 0 and x = 0.20 m. What is2vec/ )am y8sjqci7*i /jfao0 the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are a xk55 xrfvklm8ux81i: t the three corners of a square of side 0.50 m. The last cornx ml8i f5uv1k:rxxk8 5er is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is d+ws o6af2* zk1.0 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 (1d6 z*aow2fs +k, 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 ismp+ byu)a- r0*a j8sgn a uniform electric field. What is the magnitude o*psbsua gr 0 y)ma+8j-f this electric field?

  A particle with a charge of 4.0 mC has ;b u aheny4ofzg:-m4+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 60k ee;gs,h zjuuvfe hb1 9 w,;+5bngk4)00 N/C pointing downward. What charge must9b +eeef;u1;z,knu gwbh vk)4jgh s,5 be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carrl8 ,s2(ptf h hbl3n2xkies a charge of -2.00 nC. The ball is placed inside a uniform electrichnbf2 x,(3h2s 8tll pk field, and is suspended against the force 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. What is the magnitu4 ;lv cc90;miq4jzwy ede of the el4z09l 4;w jqceimvy; cectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charg qupma6 8wx)78qjhe(cj8n(oz he24cae of 3.0 mC. What is the electric field 6.0 cm from the7jxwhqmec)u8 jz86a p8o42 (ca(henq center of the sphere?