State the law of conservation of electric ;shbx5pzw47 )om0 lhu charge.

  Is it possible for two negative charges to attract eack d n6n*l;xt/ ./zlmbhh other?

  Is it possible for a positive and a nen5 e-q;;3hqqe yyq 5* avlhib0gative charge to attract each other?

  A glass rod is rubbed with a piece of s6b) bwmllpmn3g cu1hzik21um4 - 5ljahr 7p)8ilk. During the process the glass rod acquires a positive charge and the sihg4p6 b37 knarmuc-8)mp 511l mhli 2u wlzjb)lk

  A proton carries a

  The model of the atom+8 d(fj io4gxhyt8 uq1 shows a

  A neutral atom always haqda y:,500x fyfd;qpfs

  An atom has more electrons than protons. The abz33qo 6ldew, tom is

  Materials in which the electrons are b0 qx6:f,fnbxon* i6fu8g1 kdx ound very tightly to the nuclei are referred to agu1bd no xn6xf*f, q 8fkx0:i6s

  Materials in which the electrons are bound very loosely to t9d-mj: bwh;mmw puzav7:w; s( he nuclei and can move about freuz9;(h w;-bpw7mvmj :aw:m dsely within the material are referred to as

  A negatively charged rod is bro6u k/v6)9x.kou hwficught near one end of an uncharged metal bar. The end of t9fk/6uvcxwu 6o i.h)khe metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphe(h f0 dms nztgt4u:/g*re B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct(* gdh/ gtu: tsmnf40z?

  How can a negatively charged rod charge an electroscope positlim52g gj**ezively?

  An originally neutral electroscope is br ,q(vw es/g,-vtul* peiefly touched with a positively charged glass rod. The electrosco,-v (p*ugwlqevte/, spe

  An originally neutral electroscope is grounded briefly while a positively charg*yriq ikyb-*;gy/l d:i l9ps, ed glass ro9l: ,ibg* ki;s*qdyiyyprl- / d is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leavel;+eji 7 (yzl,w.qdsi s separate. Then a negative object is brought near the electrosc;+sqy.wzdi7 j,l( ielope, but does not touch it. What happens to the leaves?

  A large negatively charged object oanb-fry6 5i l6ljz 19is placed on an insulated table. A neutral metallicr5lz-b y6ilna1j6f o9 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 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 constu; em*qdg: dz;ant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge isjdkkcqv cv.3 d-:-s9 i larger in magnitude than the second c39. :idkk vc qv-c-dsjharge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nk(97mqn9m iq zear each other on an insulated table. Which stkm(m7n 9q9iq zatement best describes the electrostatic force between them?

  Two charged objects attract each other w)if7hb hz)fm 0ith a certain force. If the charges on both objects are doubled wiiz)0 7f)mhfhbth no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractivm1e 8bif0py0le forces of F on each other. If the charges are separatey8 fbme0 ilp10d by a distance of d/3, what are the new mutual forces?

  Two charged objects atunv 5o1fa5a: fpgj)a4tract 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 th4p1nga:u5 fo)jva5af eir 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. Whax(qh*x7l 1.v ih eyi)yp.m*pzt happens to the magnitude of the force on the proton if a second electron is placed next to the first e*q zyil i*.7v)1yh p.mxpeh(xlectron?

  An electron and a proton6ur8i 5a6+:ojkew,aavb 4 m vc are separated by a distance of 1.0 m. What happens to the magnitude of the force on the fje,56mwau6+oarv4akb8:c iv irst 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. ku3wxrz6ia yyzo0-61-9s;eh3.ssvmw koyv+ What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the proton-6;k u6sayozsi+vh1y3s k x0 w39mrevz. -owy?

  A point charge of +Q is placed a0cnnv:-x. i:okng5kit 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 square's center. Now, identical charges of -Q are placed at .0kn:cni-:g vko 5ixnthe 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. j5(gwt(kpc,nhe jn:bf5t* q0 When a second charge of +Q is placed at one of the triangljf(k0nt gc:qpw,(5 5b*ntjh e e'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 is not a 228 hm izazt.07xh. f,+(txoy cnmst tvector?

  At twice the distance from a point charge, the strengthvcr ij3rut6e-5o7-b g66yj rzmzv9 s h;w.b*r of the electric field

  Is it possible to have a zero el*7kt aeni/x l6ectric field value between a negative and positive charge along the lil6*n kea7x /tine joining the two charges?

  Is it possible to have a zero electric field value between two positiv/crv(lt ;v td+e charges along rlt(+v;t/dvc the line joining the two charges?

  Electric field lines near k 4mk wjtxwprci0od,lx;: .*3psitive point charges

  The electric field sho y93*jk bgxtvj;nt l*5wn

  Can electric field lines intersect in frfrd9 uf,.k8ctr6jqc 6 ee space?

  A solid block of metal in electrostatic edpbshnt(e,z /5).rlc quilibrium is placed in a uniform electric field. G5 .,)rc(tb dnpelsh z/ive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere o-8q z.mvak0q x z1oay1f equal diameters are each given the same charge, the electq1 oavzxmk0. 8 qy-z1aric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on atwj;(r ,a)9yfts khf 3y6of*ih:jtz+ wooden table in a region where a uniform electric field is directed straight upward. What can be said cfkj+tz(jaf ,w:9h6yirtys *;oh ft)3 oncerning the charge on the block's top surface?

  If a conductor is in electrostatic eqoysr*);uk n (o5,voe quilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that i0t nn)f/iqqh v62vy,lkos itxz *h 09*s grounded. As compared to the case without the hollown0vlt /06xoi fvzq*y )qhsi2,kn9 *t h sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors l hv; gg2us),min static equilibrium.

State Gauss's law.

  The charge carried by on i1qg*v al31t:d:wqwhe 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 charger5i1d m dvvs;6 of +2.00 mC. How many more protons than electrons does this piece of plasti;vmrdd61s 5iv c have?

  What is the charge on5x2nc) )m8g x/sxorac onk y++ 1 kg of protons?

  An atomic nucleus has a c pi1(tt8r6i-mtw csw(y u4d3lharge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sz(1z*-kvwpes6 f;rsv a pu3 v4eparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is thpuvv 3(f* 6s we1 ;ksrvpazz-4e magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a seconxy uf((v +* uwbpuh ,;p;bhzo,d charge, and the force between them is 1.0 N. What is the magnitude of the second zbuv y;p(h (upu;,ox+fh,* bwcharge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart)tb8 u07t k,kh :lbjvx are they?

  The force between a ih;s:w b/*69 q /mtaehr mibm.$30 \; mC$ 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. bw * /b c7hp,hr.7lycjq 0gxgwxb 46,u If they are moved to a new separation of 8.0 cm, what wb6qwxg.0j/ybc7h4 cg7p l bx u,h,r*is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axj-v8p)o1wh-xb)z kqunyt i0 j j)15t.2f wpjkis. 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 direcj1t ozin )h.-y1 8vkq0xwtfj 2 jj bupw)-)k5ption of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +(l.hyw855bht4o *i dm)lr kxh2.0 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 electrost*l wt hyodh5(ml rk.h45 bxi)8atic force which acts on the charge at the origin?

  Three point charges are loca6*)z ilf/hc f3/uphsited at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 m3zshp/ liffi) /*u ch6C 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 axoef64dli sh +p09* ha 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 f0o4h9*ildes6 + px ahis 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 (doq wp2jsklc0, m1z/+ 0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitu +0sq o/cp2l zm,djw1kde 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./ e/q( rzv+krs10 m); Q3 = 5.0 nC is at (0, 0s(r /kevq +/rz). What is the direction of the net force on the 5.0 nC charge?

  Three identical charge ytvy-;1wr ; ,tsbvnp,we.0uys of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the-yvbp; ,u; .0rt1nwe ,twyyvs magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q,xoef nv1x. js6row5: + which are separated by 3.0 m. At what poin e6x.s+ wxo v5j:r1ofnt, 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 zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is a n br7:qkbrh7/ *gntqsx11, lyt x = 4.0 m. Where on the x-axis can a third nt 1k 71, y/nrhr bb*l7qqxg:scharge 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. t oc -85qxnw:kl1k(vh Where can a third positive charge +q be place:qh xvk to 18lw5-n(ckd so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total ot3e/vt ur h-w+f $4.0 \times 10^{12} \; electrons$ 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 attraction of a 7*s dt8)/vd-ol kd mjhfixed proton some distance above it. How far above the electron is thejkhs)/tdd-lm7 *v8do proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductil l/3espag0d/0iosz )ng threads which are 30 cm long. Both arsg s/3a lldp0zi/e)o0 e given 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 charge of +40e. What is the magnitude of the electric i32csty+wjvr 72u+l t field at a distance of 1.0 t+ l3rw2 sjuyvi72+tc m from the nucleus?

  What are the magnitude and direction of the electric fi 2d;havxow .w+eld at a distance of 1.50 m from a 50.0-nC charg.h +ow2w vxda;e?

  A 5.0-C charge is 10 m from a s4x 7 tp23 lo.lvffw-( tkrqp1vmall test charge. What is the magnitude of the electric field at the location of 7v.21wp(offkt43vrllp- tq x the test charge?

  A 5.0-C charge is 10 mkdukiz9 --kwo4s/j zx ;s,.fk from a small test charge. What is the direction of the electric kxo ksi; fjwk,9d-z/4su -z k.field?

  A 5.0-C charge is 10 m fro o,d9rfw.n9o/hn p1srs494f fd ezk-wm a small test charge. What is the magnitude of the force experience w,9 -n/nf oeo4 9dskf9zrsh.wrp41df d by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a va;d3d7tibs hb)x39v.jtno 4c j lue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point mi93v t7nj34 otj ) c;.xdbhibsddway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter d*ev:gx1 d f) elj7np*stick and a -4.0 mC charge is plac) d**efvjdel1 n:xp7ged 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 mark9tszd3d.+ c 5ixzjasn*4 py*p 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 charg x.cdj*p9* y+si4as53nztp dz es is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and k4t24kodhdw -av1 0 xxx = 0.20 m. What is the magnitude of the electric field at the point midway 4 tdwxko vk0-12xh da4between them?

  Three 3.0 mC charges are at the three corners of a square of side0t+a *en pnal:v41e+jdlg-mpwu hc.z q ,;z*k 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the dvgc;+ nl0p4,ak*unqaj1p t*zw e+ .z:lm-heelectric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed ,t6 u r. pa:5tsyqowtd.to/ 3uat 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 magn. tytw/tatsp5.do,:u or6qu3 itude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC whe4dlc3/r frkiv6im2 jpg59et/ n it is placed in a uniform electric field. What is the magnitudefj/9i3ird5r2lk4 temp /vcg6 of this electric field?

  A particle with a charg uvzxfnj;wll x68:)5ne of 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 pl i);it+bkfui0 aced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball bft kiu;)0+ iifor it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. nvus42124 :b +4l dqstwjym oxThe ball is placed inside a uniform electric field, and is s+mw sj4l2 t1x4sydonq4 2 :vubuspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of rad3udixbsnvu5 jc4q. ptf06d 5:ius 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 c0 u63qs px.c:uvjibfd5d54tn m from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What ;dtgrnj wo5h) f:+jq+is the electricn:5jh rg+ ;fwt)od+ qj field 6.0 cm from the center of the sphere?