State the law of conservation of electric zo ++e0fel9ka charge.

  Is it possible for two negative charges k eb91ff omed: *p+dg;to attract each other?

  Is it possible for a positive and a negative charge to attr bqwj z249 3cfgz2un4cact each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod 7ct f2(zui5tg acquiresiu(ft57cz gt 2 a positive charge and the silk

  A proton carries a

  The model of the atom sh -h;z4gfc.v*grp u;vturnr p0x0u:-s ows a

  A neutral atom always juw 8:6v zazb(has

  An atom has more electrons than protons.6 b)r.;gvrxu e87joy1r7glb r The atom is

  Materials in which the electrons are bound very tightly to the/. cf9t+.mij-( eiua5xsivt j nuclei are referr - t.ajvsi+(5/miitj.u9 xcfeed to as

  Materials in which the electrons are bound very loosely to the nuclei.ebacy i,l1w qb jm16 ehueluz01: k6+ and can move a 6 01j1.uakei+lebw mh1: qc ,6byluzebout freely within the material are referred to as

  A negatively charged rod is broug 9 lulq9tax. l7cr8w)qht near one end of an uncharged metal bar. The cx)ll.8l 7 qwq9 ru9atend of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive cxj le th-p40p8harge, and sphere B is neutral. They are placed near each other on an insulated tableje4hp-x p08 tl. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope z,mce*,cb(bp positively?

  An originally neutral electroscope is briefly touched with akz-m/mq z; aqyt)uok**j2v g8 positively charged glass rod. The electros m mg;v*j oz8)u2kkaqq/tz*y- cope

  An originally neutral electroscope is grounded brieflype3i-g 9h;pvb while a positively charged glass rod is held near it. After the glass rod is removed, - ie9pp3;vghbthe electroscope

  A positive object touches a neutrxe/p29w / vjx7wj6adl nc;m)dal electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch2v7axj)p/d6jxw;nwedc l/ m 9 it. What happens to the leaves?

  A large negatively charged object iga0h :)ocl5h0hkq +,7h7 fnoubvuc+gs placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutralccg7h, fq vhu07bu5+ogkn+ ao0l ):hh 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 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 Coulo5 *qzx /1:p(widhubwomb constant $k$, which appears in Coulomb's law?

  Two charged objects are8q rx)lx h64ch y*h.mf separated by a distance d. The first charge is larger in magnitude than the4q hmxhh8)l *.yr c6xf second charge.

  Sphere A carries a net charge and sphere B is neutral. Thvsw jjjsw-*3 9ey are placed near each other o*w -wj3s9vjs jn an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other wit 6t fve(7ziepw /bh43oh a certain force. If the charges on both objects are doubled with v i4 hofwzb7e63t(p/eno change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attract* 9 setk)cku-rive forces of F on each other. If the chargtercuk )*s-k9es are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other bcr8 mycyti*4h7 v2z,r1sem3 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 3 4ci rm1m8tyh b y*,72sezrvcvalue? The force is now equal to

  An electron and a proton are sepa5c b)-deghntwkp9nsgh8 6 d+23bg :eb rated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second elet8psgg:dwhb- nb6b 5 3kg)h 2dec9en+ctron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens t)z ;awt 9.imk1bn(l ez(,wid4g.ih8 bye3oet o the magnituiza tb,hwo eybdlgnt.9e((wek . 4)i 83mz;i1de of the force on the 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 happen60to ql *xlv9;a: uua:xc;+1jrv gnpys to r ulvna1o;xugjl6 + vt ; :pqy*cx:09athe size of the force on the 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 s5n4 kv ua/tyv:quare. 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 pvu5y:n4ta /kvositive 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 equilateral tri a.16ob 8npvpt3bh j/uangle. 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 th8upabn opvhb/16.3 j te force that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followi 2emzl7hv4r+sng is not a vector?

  At twice the distance from a point charx*p7i j3bte-;qsku6 yge, the strength of the electric field

  Is it possible to have a zero electric field value between a )eqvn-ah n 7j*negative and positive charge al)aenn*qh 7v-j ong the line joining the two charges?

  Is it possible to have a zero electric field value between two positive chknpp ;+sm/h -k:grrqy/:s )ivarges alongm -igk: hnrkv )/pss:;p yq/+r the line joining the two charges?

  Electric field lines near x 76, dnxaf0dwu :...zixrdiqpsitive point charges

  The electric field sho3pnc/v:/ t 9gggevek1wn

  Can electric field lines2md-smg * 0d5t wbw5k 7bngd+yz7cd;m intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in cz87 ocsyhq6m5 o;e i*a uniform electric field. Give a statement6oh zoesm5 q;ycc* 7i8 concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each huwd)qza .f0z, (j 1djgiven the same charge, the electric field (E) midway between the center andw0 f1ju(),hzj.zddqa the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniforzbr, szvfq) 75ogpo8dz3 s x76m electric field is directed straight upward. What can be said concerning the charge on 7,)z5 8r3vfx sobzsq67 podzgthe block's top surface?

  If a conductor is in electrostatic equilibrium near an ele8bb 4/qucuv/ kctric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gro*edd 5 p+kpor2/oj(hq2ov b w b9vxz,6:beo p.unded. As compared to the case without the hollow sphere, the electric field at a point directly above25*wbo e,(j2vx.pp:9h brq d/zbp odvk o+oe6 the hollow sphere has

State three properties of conductoq;lu7;f8g9 m 9wogh gcrs in static equilibrium.

State Gauss's law.

  The charge carried by one electronbhdc3)f6 4smy w-kcg9 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 qlo+ z 2z;up4sk 83utwof +2.00 mC. How many more protons than electrons does t8 wu2z34sp+qlz kou;t his piece of plastic have?

  What is the charge on 1 kg o s-xv-( )l6qc w(snroib;uqp( lw )v6if protons?

  An atomic nucleus has a charge of -fb32 k7zs2hah c0eiw$+40e$. 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 axgycq* d*8f4-4.0 mC, respectively. What is the magnitude of the electric force betwe* 8xacf*y q4gden them?

  A 1.0-C charge is 15 m from a second chargea aqt0l,ariqdm8:+g5j)s q4 w, and the force between them is 1.0 N. W awdm+g)5q08i qjqs ,tara:4lhat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them 1i/i9(:) frgy wyr kamof 1.0 N. How far apart are they?

  The force between a u7cio*vi 4/ fwie6q2z $30 \; mC$ 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:dh bj :s y1padn 0:7zki1qa6mxy-ko /-N force. If they are moved to a new separation of 8.0 cm, what 7k0adm1y x/y -:aqnszbh ::k6oip1d jis the electric force between them?

  Three identical point ch6m, v( df9*csga8g,xk-pwmmj,.j jqk arges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x , g8-pjwxqc.d*mv ma g k9,(, 6ksmjjf= 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 9u zo1ya1+dnnrl m4: +b;vgkh placed at the origin, -2.0 m C to the right at x =v 41y+mhn kb:u n;rzo9glda1+ 50 cm, and +4.0 mC 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 located at the following positions:8abpu-y9 os +0sgqo b4 Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -8 ba4s+ygus p-q0oo 9b1.00 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 povcywa18( ofhhc 3b0x bkf8./mint charge of -Q is placed at the upper-left c8yf bvwk(1 amhxhc0bf/o 8. 3corner. 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-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0r /e2i8s3a hx08infve nC is at 882hfevi3ine xasr0/ (0, 0). What is the magnitude 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, 0.10 m); Qt3qm5 fy7a:hv o amdfdksxr5+ 25.la* 3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nkft5.yaod*5:m2xma3 rsfv 5 +h7 daqlC charge?

  Three identical charges of 3.0 mC are plagu*xnjcy+npw 1+ po5 /ced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnituun+n xgc+y5j1 /o*pwpde of the electrostatic force which acts on any one of the charges?

  Consider point charges ohl,in59t 2gs 8zoy+xn f +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a chargen s8+z i9tnxo h,2gyl5 of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at i j t48j4a2adxzz*.mm the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis2immz.a*d tjzx a 448j can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the o;5 tar 1iyksj3rigin and charge -q is placed at x = 2a. Where can a third positak r53 s1i;tyjive charge +q be placed so that the force on it is zero?

  A copper penny has a m7(-yevvn 4wg hass 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 m2 cnlv/sd b2xq9)z6e force of gravity by the attraction of a fixed proton some distance aboveq2ce)6dxln 9z /v2 msb it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hunn9r uea4pn +3pg from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the e3appu n+94nr threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of the el+mpw ,4m-e r xti3;dexectric field at a distance ofwp e ,;+xtx-remid4 m3 1.0 m from the nucleus?

  What are the magnitude and direction of the elect5 3 *r.kr8zg3ibo sfbwric field at a distance of 1.50 m from a 50.0-nC rkfw bzg5o3r bis 3*.8 charge?

  A 5.0-C charge is 10 m from a small test charge. Wiiol3*w .bjijs8ldoxhx8 m/ vx4 (1 d(hat is the magnitude of the electric field at the location of the testob w(j/.llm4x8 31*ijxi(shid x8d vo charge?

  A 5.0-C charge is 10 m from a small test charge. What is ol0cyk4*:ddlz)by 9v the direction of the ell d)* kbvoz dc4l9yy:0ectric field?

  A 5.0-C charge is 10 m from aznl5fsc3lf ,gf-jxpe,s0sl6 a f s27)*vjrg. small test charge. What is the magnitude of the force exp0ps a3lsj x ,nfersf.jg2z ,)sf*-7gll6v5f cerienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each h9tr bh-g oz -c:p9b ,p9vljc2tave a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chr :-p htboz-c99lvjpc 2tbg 9,arges?

  A 5.0-mC charge is placed at the 0 cm marks1 2+ulkkcyq6 3/ovbjw( .g ss of a meter stick and a -4.0 mC charge is placed atl+y b(qo2kuksvj6sgc 13 ws./ the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed abi(kjl1e y 6r6t the 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 joining the two chargyr( b6i 1l6kjees is the electric field zero?

  Two point charges of +gt*cbwo0 6yddl:k( t(; fp 0wb3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the ele:bf0g tdd;w((0 o6*cl tykbwpctric field at the point midway between them?

  Three 3.0 mC charges are aju 2cec kf7;x5t the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find thc7f;je k52xcue electric field at the center of the square.

  Consider a square which is 1.0 m jeji:p)zn n1h e/uv/ u7yk;,l 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 e y j eejl1/iuuhvnnp,/;7)zk: lectric 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 uniform e mo3)d uv,1xorws6nt 3 +y5vbbdjw9 *ilectric field. What is the maguy9xs1 5vv3o+, *ti )3rdwmdobb6n jwnitude of this electric field?

  A particle with a charge of 4.0 mC has a masfmtx niqc702 8ct 5v88qnp9 aa 0ahq,os 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 electrilcp r sdp*8:n(c field of 6000 N/C pointing downward. What charge must be placed on t p(n sr8cl:*dphe ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge ofp:ubl,n: 8oluqu e3k+ -2.00 nC. The ball is placed insno:upq,3+l :ke bulu 8ide a uniform electric 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.,ao*p wq,ojrzv h ib7w-q,gr,e:s1 .a0 mC. What is the magnitude of the electric field 5.0 cm from the sp, .joh* sq-1r,v , rqai7 gp,bzoawe:where's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the 9o.yt2 8rxm vv- uc9+c npi/qzelectric field 6.0 cm from the m82 vn/r cx+ vzyp-uiqoc99t. center of the sphere?