State the law of conservation of eld g(ysot8x3iv 4a;,3 (nh5h e yyb)peiectric charge.

  Is it possible for two negative ch w1hyy6:ckkk; 6jx2t marges to attract each other?

  Is it possible for a positive and a negati;;h: d8exb 5ucsyg4p+ 4cygx uve charge to attract each other?

  A glass rod is rubbed with a px l;8si)*pior iece of silk. During the process the glass rod acquires a positive charge aroisi)8;x* lp nd the silk

  A proton carries a

  The model of the atom show( r0jn3qcxu. dyrzh0c 8 4eg2bs a

  A neutral atom alwayslm:f lrnzs40y4ge t 1/ has

  An atom has more electrons than prot7jj.r w:vm itlrdj91-ons. The atom is

  Materials in which the electrons are bound vep5l.5vkdj* jv ry tightly to the nuclei are referrkj*d.ljp 5 5vved to as

  Materials in which tv d *si hp.+nfh89gc6rhe electrons are bound very loosely to the nuclei and can move abohcg*vn9i +ph8r f d6s.ut freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar z8ik3 7st2e c, w71hflfkgzh*. The end of the metal bar farthest from tl*hz17e,w32k8 g cikhz s ftf7he charged rod will be charged

  Sphere A carries a net positive pkmrpq-1 ;d+g+v q (bkcharge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is brieflkg drvk;q b++p1pqm-( y touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivs7 0ok y6*(fo lufgu0bely?

  An originally neutral electroscope is briefly touchem40 + 8 fxv/htybxms:hd with a positively charged glass rod. The electroscopyxh0m/t 4sm +x8:h vbfe

  An originally neutral elecpo/12v)u r 2yzmkd7hl nw .e,otroscope is grounded briefly while a positively charged gl7yo 22vn. o kw)r ,pezu1m/dhlass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Thy/lw9iyc lta 7ha ),)ntc6m.cen a negative object is brought near the ele ncyttal9i7h)my) w c.,/6 alcctroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an * u*cq,oosv* jinsulated table. A neutral metallic ball rolls straight toward the object, but stj *c,u* vqs*ooops 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 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 constani ;i+k k8gra8u+id/ngwi9 gk ;t $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chv+ry0s)/9bc*sxmx j s; se8qdarge is larger in magnitude than dx;se)s+ym/j9*0bvqsx s r8c the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are pla8 7rgu,/dkq4i s clsx4z*+1c ogjsyl:ced near each other on an insull* cx gso+z:d lyj,4k1u qs ig7c48/rsated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. Ifhxhiry/; 8dqg8owt*0 the charges on both objects are doubled with no change in separationhdho8x;w0g 8/tyi r q*, the force between them

  Two charges are separated by a distance d and exert m;1 6ovrx/)ey7aqmhifcttg kz v 1oo+ 8 *lp.i6utual attractive forces of F on each other. If the charges arq hcy1vv eaxpft or 6m;*1kzlioo) +68.t/7 gie separated by a distance of d/3, what are the new mutual forces?

  Two charged objects atyrfyr 3 q2b t62i-dw9 -rcpu(vtract each other 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 force iyrq(6 f-t2 3c9yui2w -b drrpvs now equal to

  An electron and a proton are separated by a distance of kfa5pe4 ttuc2m39riby tbc6()j ur,,1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first(t3y bijmp4r , uc6taef29ub cr)tk 5, electron?

  An electron and a proton are separated by a distance of8qxi) pw8cm; s 1.0 m. What happens to the magnitude of the force on the first x qc8;wipm8s)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 f yyt 9j b 1xxorf3-;1/zuqz;fto the size of the f1xofj39;/frzt-q 1;yxzfyb u orce 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 square. When e4a p2w539xgq:ue75 q eduqtca 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 square's centee2xg5t3u 54d9epqqquw c: a7er. 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 atzzmg cf0a-lw82zn1f,m 0hp+w 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 th2c-g8 w+lzw0 am1 m,nfzpz0hf e 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 is not a vecto3;ymx,rz .ef nr?

  At twice the distance from a point charge, the strength of the electric fies/ekz-b* 7ielk mk 1he q4hv;,ld

  Is it possible to have a zero electric fbib9z7uc;- o ttzl4 ;oield value between a negative and positive charge along the line joining the obb;ztl; czit79 u 4-otwo charges?

  Is it possible to have a zero electric field value between two positive charges tu: -2oh zgop:7 vc8daalong the line joining the tw tph-:c82uv o:7oda gzo charges?

  Electric field lines853 ;j orc 3jkqvm0oou near psitive point charges

  The electric field sho c y5.5 xoa,phlhc-bih iu,(m4wn

  Can electric field lines intersect u3r) iw(iyjem 4e32j (4zgkcr.oiy0min free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform oiq1i,f:zozgo5)c/ek 5cbp( electric field. Give a statement concerning th:ozfci(kq5 ,ei5bz)1 og poc/e electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters arwok--mr66 zz2q+ln4 q3vemldymb- j 9e each given the same charge, the electric field (E) midway m6kmyq n lz24lmor +-bdj-9-w36qzvebetween the center and the surface is

  A cubic block of aluminum rests pkosaiy6f9g-+z)eqmy x01o8bn-m (8xs bmi2 on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concernin-80o+mben y ixy-zp9mqaoi62sf 8 m(kb s1xg)g the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chargemp:9x mpc9fdo*wk6 3cl8zi a(

  A positive point chargg09jt9bh4 rwve is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the ew hrb9v t94g0jlectric field at a point directly above the hollow sphere has

State three properties of conductorspn7 n6w)n0xlm,;f tqx in static equilibrium.

State Gauss's law.

  The charge carried by one e q7zm6d de8bx+esmx:6pv/r : flectron 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 nq*uoel 1ftw(6 et charge of +2.00 mC. How many more protons than electrons does this piece of plasticf 1(equl w6*to have?

  What is the charge on 1 kg of:9w*n8cu2 ca 0oa9o c tmaae2k protons?

  An atomic nucleus has a chargecz8-ta)0wf kirb )g*nm 5olz) 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:w6*qrp hs, c)b ry9cg cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force be,):csy6qg 9rr bw p*chtween them?

  A 1.0-C charge is 15 m from a secondfl-s uabgs36 - charge, and the force between them is 1.0 N. What is the magnitude of6u3sg-f-b l as the second charge?

  Two 1.0-C charges have a force between them o6: q)/1/zmo jv tbfewjf 1.0 N. How far apart are they?

  The force between a e0-ep.jp laldoj-/f 4 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cmodyorqu;8 rhm1 0 2qvm.ct q84 apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, 8 myq8c2mv; 0.otro qu4r1dhqwhat is the electric force between them?

  Three identical point charges ox ahz o /f0:)7aimtsr)bf /va2f 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 acts on t0 7zr x)sahf/)imf2vbo /:atahe charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is plac g9x4kryxlb x9q8uim8;r3 pb3ed 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 ;4r9 p3x8bb8l gm3xkxr yu9 qidirection of the electrostatic force which acts on the charge at the origin?

  Three point charges are located j0(nm/*h7hj.hx4bdbgjq6 r/, y:sl k8vekem 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. k6 bb.gvm0qynm: 4j7*8 sjehhe j( h k/,dxl/rWhat 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 point chsdm1-n.gsl 4 sarge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the posit l- nssgmd1.s4ive 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 = 0 6n;qakf 6xt eh4uep.f6pb:j -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whaf .4e qnk;0h fppjt6e bux:66at 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. +yvc:hj.c5e0vt,:x9 au kirr0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What 9t ru,5rxec0hk +.y:avij:v cis the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an eq7z t ;3f xh:js*fmh8 wjr9jh-juilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which act hfj7s:*3t;z jfjrmh8 hx 9jw-s on any one of the charges?

  Consider point charges of +Q and +4Q, which are separa7.-sn ,qa sosnted by 3.0 m. At what point, on a line between the two charges, would it bs sa.qn7,-sone 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 charge is at w+8vzwu +,hya;kyfa 4 x = 4.0 m. Where on tau +whwy+yk 48fav,;zhe x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where ctizv :4 asadh927rsh9an a third positive charge +q be placed so that the for 99 tzav dr:ah42h7sisce on it is zero?

  A copper penny has a mas .6z y /.ippbxfn9txums*e4 (zs 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 force of gravity by the attractio(x tgeo0fqe52ukl;f3n of a fixed proton some distance above it. Hoq0x;flg5u 3tf e( keo2w far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting tnpbh/bu6y23w he;9 chhreads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threan3uh y;c2bw /he bh96pds is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus ha* mo3 m/fj7p7brds4 xds a charge of +40e. What is the magnitude of the electric fieldd4spm7*j fdro3x7m/b at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of thdy:( s*h 6b-1gh7su6iqw 3cusg;n 3jejgp 4 wte electric field at a distance of 1.50 m from64:js7- p61jnbswgs3(yu 3hcdi*gu;hweq gt a 50.0-nC charge?

  A 5.0-C charge is 10 m f bb)k3a-y ;dwfrom a small test charge. What is the magnitude of the electric field at the locak-;3bdy w) bfation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. rcg3i*,z77z yxo0ze lsw l(ne6e46u u What is the direction of the elezw cr0 4e67z6yzll* su,xn(eoe37 igu ctric field?

  A 5.0-C charge is 10 m from a small test chargew5i4.iw k oka,t50 gyi. What is the magnitude of the force experienced by a 1.0 k,ik oigtw4y5w0 i.5anC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and ;-i0b5r 4vait- ibs e/dnw9rfare separated by a distance of 4.0 m. What is the electric field at a poin nwbi9 ds0 t/;-ab4rif- irev5t midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick andz 7 ,fv-u*rzk1eb6ueg e3f1yq a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm3kyf11 z7qze u v*e,e ubf-6rg mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC (uk0 s*o fk 8g7.qlslnj0gxk9charge is placed at the 50 cm mark. At what point on a line joining t ug.kqx*s7n j8lk(00ks gof9l he two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and 0t v2aggi;pt6 )r+god x = 0.20 m. What i6;+2vipg0aggrt o ) dts the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three /sl5rqfuak ew -2 c23ucorners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC s3e2u-qaf rk/c2l5w ucharge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed :t )zw o scf ncmhze6kth45 o;8y9dn0.at the corners of the square as 0.nz6)c kdtzomwe: 8nfhs9 ht4o5yc;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 field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC wesp .8viidb,sn w u9,fv 17p5xhen it is placed in a uniform electric field. What is the magnitude of this electr v8.uid,is xfsbvp 19 ew,75pnic field?

  A particle with a charge of 4.0 mC has a mas6e*vjvv*nn uct4/p i yq g8-q7s 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-a- /9ehi40m+l kg rpcon)ef mmkw56 x in an electric field of 6000 N/C pointing downward. What charkg h0)oc4w6f+ekiax95 pe n-m/lmm-rge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chaprkbh5yq)7r* f t8gcc0bl: q7rge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the mag*0rc8kt7:y 5g )lrbq7hcqfb pnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge orl *29b ubgugl6iqi-zt, n .ts t/ca33f +2.0 mC. What is the magnitude of the electric field 5.0bzl. u3/, tcigtt3sgquil-ba* 96 rn2 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mnva2dx:i ijdz h(3u;8C. What is the electric field2d3iuxj;ndi a8(zv :h 6.0 cm from the center of the sphere?