State the law of conservation 1/)6d.v imkkq+ lh69i ru;orb;uhebgof electric charge.

  Is it possible for two negative charges to attract each oo*gha gm-i5n 8tq7i x+ther?

  Is it possible for a posh d o68 lid,j.gdch/z6itive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the pky y kn8/h)u0+w 9n6d-snob p2u bys0process the glass rod acquires a positive charge and the sil0n9pyso k6 s)+ ub 82nn kbwy0udhp/y-k

  A proton carries a

  The model of the atom wmwfz 26tv *c.shows a

  A neutral atom always h( jx.j4mvua+ wme dwj26o 3tz5as

  An atom has more electrons than protons. The pgai6fz;4/)kl )krnl atom is

  Materials in which the electrons are bound very tightlyyfn vab5vm6 y)l;mo48 to the nuclei are referredm mvl5;a8by4of)vy 6n to as

  Materials in which the electrons are bound ve/4z5se zkvd 8mry loosely to the nuclei and can move about freely within tm5 /vzksd4 e8zhe material are referred to as

  A negatively charged rod is brought near one end of an uncharg:evv 4 ioot8g*db1v kbx:1-t ged metal bar. The end of the metal bar farthest from e o-1xoi* gdvb:8t1 bk t4vgv:the charged rod will be charged

  Sphere A carries a net positive chargeo;r4nw8aiqt3 j2j) ya, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wq2w t8i )3oj j;ya4narire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positi+neo+a6y0xdr ( hph n8vely?

  An originally neutral electroscope is briefly toucheu1ueqh0./v *2n7o;gwfzy u nfd with a positively charged glass rod. The electroscopen2.uf f q;nh* /o0vyu1 zewgu7

  An originally neutral electroscope is grounded briefly while a positively char 8b) fzau/..ie9mqlg 0x- shbrged glass rod is held near it. After the glass rodh/ 9b 8s0xmb)qrg a.zf liu-.e is removed, the electroscope

  A positive object touches a neutral electroscope, and the leav yxrl,igf4(+q* yxd b7es separate. Then a negative o4q ,g* i7yrbx+ld (xyfbject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively chargev0jnq.o 9 b9mld object is placed on an insulated table. A neutral metallic ball rolls straight toward thej0b9m.9ov nlq 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 Ch ps2yz-y0 xl,a.6 lnaoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by4gbeex4*r6w0khc* r x a distance d. The first charge is larger in magnitude than the sec r4k*6 ex0ge4wxb*h rcond charge.

  Sphere A carries a net charge and sphere B isbxrzuro6 h/b9 l8; tecu 2di06 neutral. They are placed near each other on an insulated table. Which statement best describes the el8xbd6;/uht eli0zur92bo c r 6ectrostatic force between them?

  Two charged objects attract each other with ad/ hj p,sq:m7j certain force. If the charges on both objects are doubled with no change in separation, the forc, :psm d/7jhjqe between them

  Two charges are separated by a distance d and exert mutual attraq,(+b l(o-g 0gkx7 -n wp :gwt92ktze pqauaw+ctive forces of F on each other. If the charges are separated by a distance of dpwp+9ek ( wba,x2-k7og tu:wqz qg0 gn+-t(al/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the xc9v6:oyn 2:0 o:f us*k *ahc5fqr gclforce 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 9c*sf:2x ancugf5 k6ory*q:vl: c 0hooriginal value? The force is now equal to

  An electron and a proton are separau.sd0jrn 7k)+vjdnp7 emo9 n b7,g b+dted by a distance of 1.0 m. What happens to the magnitude of the force on the proton i,jp9)+ d rmv +b7u 7n07nsojde kbnd.gf a second electron is placed next to the first electron?

  An electron and a proton are separated by a+plnz1dub8l0 distance of 1.0 m. What happens to the magnitude of the force on the first electron ifl+bdu1p lz8n 0 a second electron is placed next to the proton?

  An electron and a protj3+ gxv g ka42lzb*zu)on are separated by a distance of 1.0 m. What happens to the size of the force on the proton ifb xk) lj*a2+ zvguz4g3 the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed +8olapi n82 lxat 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 82+onxapill 8-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 ofl*k2k- wev(5v1ecce y 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 the magnitude of the force that acts on the center chalc*5- wc( 1kevvee2ykrge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vecqm1f:l t -up:w)k vzy+tor?

  At twice the distance from a point charge, the strej 4a3rb1fm. bangth of the electric field

  Is it possible to have a zero electric field value between a negative and pe-0:l*zwbk-f c 8oap x:czoj( ositive charge alo(olwo*zc-0:z bcf pja e-:k 8xng the line joining the two charges?

  Is it possible to have a zero electric fiels0n0qdw07umqe-;w s,xl4w1 2faspza d value between two positive charges along the line j,7ae4q sp- naw0u s m sl0xwwq1fzd2;0oining the two charges?

  Electric field lines near psitive2sse.z1 p5ds e point charges

  The electric field show :j7opjo;glvrw m609 hklby 4/n

  Can electric field lines in qik-km7a;,d9(bcewi j de2/i tersect in free space?

  A solid block of metal in electrostatic equixzv7 f/s,j8y6(tpyl ilibrium is placed in a uniform electric field. Give a statement concerning the electvtx/i ,jps8z6 7ly y(fric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters ky-b6gac8cv 7are each given the same charge, the electric field (E) midway between the center and the sur-ykb6vccg78 a face is

  A cubic block of aluminum rests on a wooden table i+7 6dl quuf2k7c9et1t vk jy;bn a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top skf;69 d t72vt7cl e+uyquj1bkurface?

  If a conductor is in electrostatic equilibrium near an electricaa np- 3n,x(ej charge

  A positive point charge is enclosed in a ho+u 8s/ )eof:j txb2fwxbr)l :av22kuacj v;.wllow metallic sphere that is grounded. As compared to the case without the hollow jxj/ 8 2wruxb)w vsko)atb e cv.+2aff::l2;usphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors ;p 3(tphkpqu 0in static equilibrium.

State Gauss's law.

  The charge carried by one electron ;czx8o-dc7 n x nkg)70xywyc) 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 0cf77dwsajv 5u1 ;tflelectrons does this piece o15;ftjcu 0l7vf7 wda sf plastic have?

  What is the charge on 1 kg of proton:go37 vp idp . xkidw6iow27l/gtln60s?

  An atomic nucleus has a charge+dxp712 p) 1y imw/mpmoyphe6 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 cm, have ch dguxg+xm -8;jarge values of 2.0 and -4.0 mC, respectivelx jd+ m8;-uggxy. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from c3 yc8 ,pbt vk375urwra second charge, and the force between them is 1.0 N. What is the magnitude of the secvw pcb7 y53,8utrcr 3kond charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart aazi i1 8,obrg;+zn2,bdjpf7 mre they?

  The force between a jd+eo*g -y8e.j((6wvl.c vncgbx2 zp$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, i94y r df0(kzka,,*s4pj leuhrnitially 2.0 cm apart, experience a 1.0-N force. If they arep(u fakl0y4j k4, ,z9srh*erd moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical pointxq/7bse6f:9nc s* pur:*v qx- qbfje) charges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right atbpn /r-q qx:jc9evfsb*x *su)eq6 f7: 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 the charge at the origin?

  Three point charges are placed on the x-axis. A charge b2.y9ymzozw g 3) 1lj-0teuolof +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 100 cm mark. What are the magnitude and direction of the electrostatic fozyb9 -.mj2 1l3glwyeoz o)u0 trce which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at 6s.k(j,x f8 v zumjlf1a0oc2px = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 =p0um.c1 x8s(z6 l ajk,fv2jof -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 t meob*)gki 9;rg0dj3q,ac) nfhe center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic forcg odfe) 0bn);*mrk,ac93 qi gje 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 r64t.k ex;azh is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the ne a;e6t4krz.hxt 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); Q3 ta xu-7d)mr+ k= 5.0 nC is at (0, 0). What is the direction of the ne)d7u+a -rmxk tt force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertinvgf+j/yir:si)(i un: iq;+ tces of an equilateral triangle which measures 30 cm on a side. What yn/gn sij+rii t: qf +(vi:);uis the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated bf *qkv fscgw:f4,vui: m s.*v4y 3.0 m. At what point, on a line betcff vw,qv*.sm:f4g*k: usv4i ween 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 orig 2+mzg+ls ;j52v d j8l:anoxisin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge :aznl5o d2l2j s+j+gm;six v8be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is plac -map9p;vh/ mjt- puy*y 7-rmaed at x = 2a. Where can a third pos7*ya p yju-p/9m h;-avp-mrtm itive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0ob-nl d(f8lt3 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 -u;v q t2eb+dptd e5k-owi:dxj v742vgravity by the attraction of a fixed proton so2v4 +- ;:d7uedvtx wepod5 j-tkqi2bvme distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductim)w2 *cwmg5w/m1 u e .7rscl vd+sqo-lng threads which are q *2c uwmmsdwolm ). 7ecwrv/s5-+g1l30 cm long. Both are 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 a6-bqdh 8h*)uxherp .s7vp ip1 charge of +40e. What is the magnitude of the electric field at a distance of 1. idpub8 r7hvh*px eh6s.-)1p q0 m from the nucleus?

  What are the magnitude and dio v/2x;g t1tq9hvsn 0 ufvsj(-rection of the electric field at a distance of 1.50 m from/2j0s( -xgvtnqsvufh1t9; o v a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the mag nro)cgc *j. /c9l,znsf,rk c+nitude of the electr9n,jlzr.g s rc+ ,oc*fcc/k n)ic field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whaf+z pd(;1p mh+zl-cno* hb4kmt is the direction of the electric fhz4cm;+ +(1 nd-h*pkloz m bpfield?

  A 5.0-C charge is 10 m from a small tenzrb67 roin 8b(-ekn9st charge. What is the magnitude of the force experienced by a 1.0 nC ch-(r679nz8nr bkneib o arge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and arecl1uq32a /.pwm9; ubjm:v vlc kl *+ah separated by a distance of 4.0 m. What is the electric field at a point midway between the two charg:2/9amvclhmva u. jlw1plku;qb*c3+ es?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stic*7 z t)iw/d clwtc8:rm /mx)wtk and a -4.0 mC charge is placlwcxmrd8iw/wtt)c * :m/ z)t7ed 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 mark of a meter stio-cq-tu419mz qrc nn 1ck and a -4.0 mC charge is placed at the 50 cm mark. At what point on a linn1 -quoc41tqzn m 9r-ce joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placu-phc + o)ky)t5s(pe;h suvw4 ed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the kse(yht4)o)+psw huc-p5v ; upoint midway between them?

  Three 3.0 mC charges are at the three cf;ut9jz4 tqqs/u f2 5gorners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at tu5f ug zq9j sq2t;4f/the center of the square.

  Consider a square which is 1.0 m onll( -vihxk//-9n asmex8m4f s a side. Charges are placed at the corners of the square as followsi e/kf (vaslm4-9mxs -hn /8xl: +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 actst7- w0*oporp a on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitu paoor w0-pt7*de of this electric field?

  A particle with a charge of 4.0 65lmf rg r,o.hmC 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 an electric qwzb rf 888txi64rb/b field of 6000 N/C pointiw8tb b8r 8fbixq/rz64 ng downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 nn3h) 3j2.x g*sp5 xwvziz,pk g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspendx 5in3h)3z,z*2 pvg .knwjxs ped against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charg de,i/t4/ b .mz6ghdcobh4bi5e of +2.0 mC. What is the magnitude of the electric field 5.0 cm froc ob4.mhibbzt6,h4 d /ie/ 5dgm the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 memo .ed3r5xxf/ zh5j8C. What is the electric field 6.0 cm from thoxdjrez3 mh./55x8e fe center of the sphere?