State the law of conser m67v pj;511p8 +jdetxf9rrwmzlf b e.vation of electric charge.

  Is it possible for two negative charges to attract each o0o- ok h;ry1gyther?

  Is it possible for a positive and a negative char5ngb3/ fjqc:k ge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod ay/ur rshzb6 0 g5*m5 utzz4cs5nk.ou+cquires s*4 zb 0mzo su5ut5zn+yu6 krc/5 gh.ra positive charge and the silk

  A proton carries a

  The model of the atom shows m5eg:0t pnn* ca

  A neutral atom always vawyn,.15v3v0rzc v ihas

  An atom has more electrons than protov ;e7svzwf gzlh,-z)a1m:co3ns. The atom is

  Materials in which the electrons arbo nsvn0(r cqp 93nn6s.g*j(h e bound very tightly to the nuclei are referredp.hbs 3nqv9 j(s 60n*cnog(nr to as

  Materials in which the electrons are bound very looselym,o17 dmo; , meiqx(d- .qxp1 +6bip uaau3kii to the nuclei and can mov qqdmu7ppu(,o.d+b;3aaiix i eo1 6xim-1km,e about freely within the material are referred to as

  A negatively charged rod is broughtd0ds uc6h45tf ew-v(p near one end of an uncharged metal bar. The end of the metal bar fartheuc5d h-fvd60 p4( westst from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neu t ft2ql8+vkw w3tyi/(tral. They are placed nearvwwl +/8it2 3q(tkyt f each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrv*i5 c(*wj2 -wx jg q)ja)sysif,q5y- j;qypf oscope positively?

  An originally neutral electrosrlu,w* zo2kr,. etq z3cope is briefly touched with a positively charged glass rod. Thewrz.z,3lq ,rk2toeu* electroscope

  An originally neutral electroscope is groundyau.yme ,g q 1,a9dkk-ed briefly while a positively charged glass rod is held near it. After the glass rod is removed, the elekgq,meua ka9 1y y-d,.ctroscope

  A positive object touches a neutral electroscope, and the lea 54pz 4(64 :hnc oosnascl-obqves separate. Then a negative object is brought near the electroscope, but does not touch it. Wha-s (: n5 oo4p ocszhqncb4a46lt happens to the leaves?

  A large negatively charvv o: z(yb eg-xp+;5udged object is placed on an insulated table. A 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 forwarx(5;u-o bz ygev p:dv+d, 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 constalngelo) +y5s v v:s*y2nt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is eem0hs sb+43e larger in magnitude than the 0esh e4s3mb+esecond charge.

  Sphere A carries a net charge and sphere B s *fhmc)8avvapx0 un+9up50eis neutral. They are placed near each other on an insulated table. Whf ea0snp5c0 u a)px*u+9mhvv8ich statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If thgcdcve3 4z5da mhy5 n*8dee9* e charges on both objects are doubled with no change8dydgz cm9che e 5en*da45v3* in separation, the force between them

  Two charges are separatea2cpp k6:4xwlj ub ua/5th9i -d by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by 5kc69au xiha2tb-p4 ulj /:pw a distance of d/3, what are the new mutual forces?

  Two charged objects attpg7u dxsm ;zuk5c wa yln52-2+ract 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 ce-2lczkpn yuwd2m+a 57usg;x5nters is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distancedt11cq .e k sa l7qd61i9orq*z of 1.0 m. What happens to the magnitude of the force on the proton if a second electro7k t1qil qoddr1z9q6 *ecas.1n is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.j:adwulb. 8,w0 m. What happens to the magnitude of the force on the first electron if a second electron is placed ,w8b.l:wu djanext to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whas-.x-7d 2.txvji0 lhnp q7p zjt happens to the size of the force x2.t - q zjpplvdi -sjh0n.77xon 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 ak-juh 5o9ke6s square. When a second point charge of -Q is placed at one of the square's corners, - h5ek9oukj6s 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 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 equilatera)d:-m8jeiv5kkmx 82ba oq3(xoct3 hi l triangle. When a second charge of +Q is placed at one of the tr mio dqa v 5xe-jch:8ok k(btm332xi)8iangle'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 a:vx mn96sst /not a vector?

  At twice the distance from a point chac89o dafrv:zd cc7*0drge, the strength of the electric field

  Is it possible to have a zero electric field value between a negativ5igpwfy8 y0wn:,b bs x(vr c1.e and positive charge along the linryf, g5inp 1 bw:xbsyw8.(0cve joining the two charges?

  Is it possible to have a zero electric field value betwee54waa) f btu3nbv2k)e n two positive charges along the line joining the two chare4ftw2 aa 53b)nk)u bvges?

  Electric field lines near ps4 xt, fb610ttnsrta,8a2r t4 e ydux*nitive point charges

  The electric field svg36u:hcoro ;eb 26a3ggia 1f hown

  Can electric field linest r.o p*:gcfi3 intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a ug yda,lj/r)4l niform electric field. Give a statement concerning the electric field),ra/ g4dllyj in the block's interior.

  If a solid metal sphere and a hollow 3jfr5k+r, h hfmetal sphere of equal diameters are each given the same charge, the electric fir 3fk+j,5frh held (E) midway between the center and the surface is

  A cubic block of aluminum rests r-dije4)o( xfz b-y:don a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top suizd-f)bxj:y-r4e do(rface?

  If a conductor is in electr),w1 :,f,igkworala f ostatic equilibrium near an electric charge

  A positive point charge is enclosed in 5 c zc8gsz 2-)nxpn2hra hollow metallic sphere that is grounded. As compared to the case without the hollow sphere2shnxcng5 z8)2 cp-rz, the electric field at a point directly above the hollow sphere has

State three properties of conducwrcln*hk7 r2vfl)t5 ucms(z, w/bi58tors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is riw4apbc s /t-d8j.::gibq7 d$e = -1.6 \times 10^{-19} \; C$. 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 t wth5 xu wt1.;taia0q7han electrons does this piece of pt5qw. hui7tt a1 w0a;xlastic have?

  What is the charge on 1 kg of prot.swufl1ccyxg* - :ae. bi05euons?

  An atomic nucleus has a chargr c*nau5 ncpckj1 n/g,5amh, 2e 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 charge values of 2.0 and -4.0 md 8mso)/ffj5++ybw.h yq h7 v6vdg)vyC, respectively. What is the magnitude of the electrivyjmvdhy7 q5of6 )8+fdb)wy/ +hgs. vc force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between ki c.ve9 9d htjrcld20cgwb+/o*3.ycthem is 1.0 N. What is the magnitude of the s3c.0*tg/99 cc.jrb odd2+e iklchvywecond charge?

  Two 1.0-C charges have a force between them of 1.0 N. How, x-itgmqycdv/j j1:28dt( nf far apart are they?

  The force between a f+61ur womok n/jn c474aiy1m$30 \; mC$ 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. xpv-sfyx5y1ee:o 0 0uIf they are moved to a new separation of 8.0 cm, whatef x:0 uyxp1 5ves-0oy is the electric force between them?

  Three identical point charges of 2.0 mC ay7e /mw0 rkm17h(bcfmcqj6 ;b re placed on the x-axis. The first charge is at the origin, the second to the ri1b6q (ke cjwy0 fbcmm h7m7;r/ght 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 the charge at the origin?

  Three point charges are placed on the x8.jl*svh v p*z-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 vvp8jz*s*h l. 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 positionsobv/ bo3z6kbjb)w1fd d7xw - *: 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. What bbwfz1- x6dw*v/3ob d bk)o7jis the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a rv)u w2,rva( ik0; sjnsquare, 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 )k(r2w0rvsv; ina, jucenter 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 mgovb h mf(595 03e1pkfn +gtvj); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the nef m 5otb03enf1vhgkpj 5 +(g9vt 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);j gy5ozqu3ckr37 8v(e h/rnb , Q3 = 5.0 nC is atrc,5 zgq e3uj7o(/knhr3v y b8 (0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices o q:gt/vy:a x4pf an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic for4x /v :gpa:qtyce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separazrlf/y :t;u 2y x5ew:cted by 3.0 m. At what point, on a line between the two charges, would it be ptu eycf;z2:x 5y:l/wrossible 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 g w+, itve2 ijotdzeq*p*wnv. hs0) 6(is at x = 4.0 m. Where on the x-axis can a third ce ps*e.w d jv,zo2 qi*vh+t )(wgt6ni0harge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q fb2e0qu no15jis placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is n5jbo1eq2fu0 zero?

  A copper penny has a mass of 3.0 g. A t 5er3p8hedx/hweqd + +otal 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 attractpz qnd y4wobt9*+3*d dtk6 v9wion of a fixed proton some ddpv4 dw*dn zy+9oq 6*wk9t3btistance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by +pfkjnj8 k , tw/1el6nnonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the ang 8n6 fj t1pe,+jk/knwlle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is th*dk nt 6mru-eepg/7h 7e magnitude of the electric field at a distance of 1.0d/e7np-megu* 7hr 6kt m from the nucleus?

  What are the magnitude and direction of the electric field at aaihollfb:97ib 44 yd5 distance of 1.50 m from a 50.b 4l54 f7iiob9ya:hdl 0-nC charge?

  A 5.0-C charge is 10 m frouhmw(mfqi6.h ps:k/k5h a*. zm a small test charge. What is the magnitude of the electric field at the location ok z6m:miauh/ p. q5h.shk*(fwf the test charge?

  A 5.0-C charge is 10 m from a smar2es +9j vg*h( bk*eccll test charge. What is the direction of the electrb+c kc*eh*vrse j29g( ic field?

  A 5.0-C charge is 10 m from a small test charge. aa1xic)19 ys b What is the magnitude of the force exper ia sxcba9)1y1ienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separateyd(b w5bc.rdcq9 ,5aa d by a distance of 4.0 m. What is the electric field at a point midway bw. b5cdqc9 (ardb,y5 aetween the two charges?

  A 5.0-mC charge is placed at thax( 3a9 hrq,kce 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. rxq 3a9hka, (c 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 stick and a -4.0 mC 4bqzz7j zs s)10jhk3jcharge is placed at the 50 cm mark. At what point on a line joining the two charges is the z0zjqzks )7sbj 1 3hj4electric field zero?

  Two point charges of +3.0 mC and -7.0mej4zo of1b.he/x;7h1 yj 8 nm mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway beth1e ym; mjh17e8o z./ foj4xbnween them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m.mr95u 1 ei+7kv3gs7yqp yl4fh )m2u8 mi d5fet The last comm 87gef5 f3luiky7r9u5mp1i2t 4syh q )dve+rner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners o ao-db2r; :kzpiyr8p -f 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 electric field at the squarz 8-r i; rbp2yod:p-ake's center?

  A force of 10 N acts on a charge v8rt3bl1. qks/ pv6iaof 5.0 mC when it is placed in a uniform electricarvsql/ 6 t38p v1b.ki field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mas/odc utx2p-p0)f7 ji7pr /hv ls 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 vqqnnnxp,k5.z 5s xm*q-pk3*is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspendq- z p 3x nsnkvnq,5k*5*.pxqmed?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. ikq 3+b46aif3ar2 zzvydzr 5f)cn )x;The ball is placed inside a uniform electric field, and is suspended against the force offi4bz )dqa ;i2+v5rz36acrx3f)y nk z gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chkh/8dm3n63zyi n j i:uarge of +2.0 mC. What is the magnitude of the electric field 5.8mi6 3hund /z:3ykjni0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carrimp5:/t68em4rw abej ges a charge of 3.0 mC. What is the electric field 6.0 cmawp et/jmr 6b5: g4e8m from the center of the sphere?