State the law of conservation of elei(. md0w0zzz; ce/qf8 co 9accctric charge.

  Is it possible for two negative charges to attract eacf*nkwo;7xw 2 vh other?

  Is it possible for a positive and a negative charges1xa9s, dlak7w *c3 un to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glabx(93 y xkh(tgss rod acqui9(3thxgyk( xbres a positive charge and the silk

  A proton carries a

  The model of the atom shows5 4eoqny dr13e a

  A neutral atom always h jfbpz8(i3w2r woh4/qas

  An atom has more electron4cfpbp) z52wqgdck9)a9 /rto s than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei ares, xt;aql4n1o/ho+ i)de. gac referred i.g4q) c /+oxha,1t ad l;ensoto as

  Materials in which the electrons are bound very loosely i.ij w9n5vdycta5x: z:.4rfgto the nuclei and can move about freely nt rg.5aydv5f9 jic :4.x :wizwithin the material are referred to as

  A negatively charged rod is broughf,q3ff uzsh47.pm9)wu j5xb z pivn;;9 x+yryt near one end of an uncharged metal bar. The end of the metal bar farthest frorbh;y xfu+7v,q9fm 94;u njw35 xyzsppi. z) fm the charged rod will be charged

  Sphere A carries a net posi+q8l jbntiv:1a (h.,l rdaud:tive charge, and sphere 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 starltadq u::ha,18+ij .lnd(b vtement is correct?

  How can a negatively charged rod charge an y7in,) r txg:pwc-h ;velectroscope positively?

  An originally neutral elepf :,+nch( iasctroscope is briefly touched with a positively charged gli+sf pn:ah(c ,ass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a pos(hk6 .p( e7cnfi bdjdb k/5l:yitively charged glass rod is held near it. After the glass (le 6(/.: b jd5nkbdcp7h ykfirod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. v uifhq(a;22u3- yu gdThen a negative obje3 -uaugdvihfyuq;22 (ct is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulbhm- u mo)l/c5ated table. A neutral metallic ball rolls straight toward the object, but stops bef 5cmbhlm-) /ouore 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 coa cct :,i xu8y0k:lqq,nstant $k$, which appears in Coulomb's law?

  Two charged objects are setbw3i1 6o hrpa(aq 67wparated by a distance d. The first charge is larger in magnitude than the sh w3b qara6t wo1i67(pecond charge.

  Sphere A carries a netr nitv/f49i 7t charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic forfr 9nitt/v7 4ice between them?

  Two charged objects attract each other with a certains he*1sk2nv t3,pxo w2 force. If the charges on both objects are doubled with no change in separation, the force between toxhsp*2s,t ev 32 1kwnhem

  Two charges are separated by a distance d and exert mutual attractive foif nzzoa/06 v77xf n0xrces of F on each other. If the charges are separated by a distance7z ianxnvffz 7o6 00x/ of d/3, what are the new mutual forces?

  Two charged objects attract eawnhb cbq d,jsj 5cec i(6;d2m0+xp0n 9ch 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 is now equi h +m0b 9; ( dbdcn2weqcpjcn6x,5j0sal to

  An electron and a proton are separated by a distance of 1.0 x9b+n0 p(ou js /meu4jm. What happens to the magnitude of the force oj 9x/ pn0( uum+4jsebon the proton if a second electron is placed next to the first electron?

  An electron and a proton aredm7 .mlm (tf.o separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the pr.dmomm( 7tl .foton?

  An electron and a proton are s juinevj8e8tj2;i j6. eparated by a distance of 1.0 m. What happens to the si6 ;jvjj u8j i2i8e.tenze 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 r4eb(a:n+k7 n sb ne-uthe 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 posit(aen4 n- brek +u7bn:sive 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 pxueb2unysnn.(z., 1 yj9 b2 kzlaced at 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. Whu 2kjxz(s un.1,n.zb 2bn yy9eat 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 acr:p4 r44u (k .n sons3( n9ijoyul1m h1*nasg vector?

  At twice the distance from a point chaytyo8 7kd;u2vb:cuo d/p5 q0xrge, the strength of the electric field

  Is it possible to have a zero electric field 2gkm*u xfscp *;vs(8xvalue between a negative and positive chars g*cx2(;m8uvp *kfs xge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positive chargex: ,na27txjj6hy505ubc tiv fs along the line joining :55acut6jfbiy 2 0vx, txnj7hthe two charges?

  Electric field lines near psitive p as5 n(jj*/tng wn9y mw/nh9+yoint charges

  The electric field shw2xd ex,9p1 gmown

  Can electric field lines intersect in free space?k w 9cp7/tj,(q6kpfp j4r/yqh

  A solid block of metal in electrostatic equilibrium is plrxumjuiv htko)/8: )rqu3 .l4aced in a uniform electrxr))vt uk o/ru43.j ui:hq ml8ic field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal ,u;ok uke;hl08jjp+ lsphere of equal diameters are each given the sameoj ku+ej uph;l 8k;,0l charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a) 7o; vhpmj:rd region where a uniform electric field is directed straight upward. What can be said concerning the charge on the vhp:m rj)od;7 block's top surface?

  If a conductor is in electrostatic equilibr7wba 81cr7ev,9 o kfzoium near an electric charge

  A positive point charge is enclosed in a hm q 9l*s fmhk* k-q8wq(h)zcr1ollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow spher )(fhm18 wc* lkm-q* 9zqksrhqe has

State three properties of9o8l mgjrz)tru7*ff30 mx q-x conductors in static equilibrium.

State Gauss's law.

  The charge carried by one z8sqvvn. lu4s.72qynelectron 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 el457 o p h6hh6ri7 hsw/y8fqxg 9yd)vhiectrons doeshp h7v f/s8wrhy5 q )yoi hg49676hixd this piece of plastic have?

  What is the charge on 1k8q :bsycpxbor4l50mm31 o ;l aku 8s3 kg of protons?

  An atomic nucleus has a char1 8a.i p7g.xpappiw5jge 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 m o; lellgt 6e1-7f nio++be(scharge values of 2.0 and -4.0 mC, respectively. What ilee;6oni7of m+gt (bs+ 1e-lls the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force beth8z(f fl+7afr ween them is 1.0 N. What is the magnitude of the second chal afh+f7z (fr8rge?

  Two 1.0-C charges have a force between them of 1.0 ,byks)t8 xh7b cg1jl1N. How far apart are they?

  The force between a wg4:m jn;uq 12 zt*ncx$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, izxd tdwr.7- sszkh532nitially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, wh kst3-dzxszwrh d5 27.at is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axo7rp3bb 5)f z s(gtl;34egupogk h+u4is. 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 whig ropgo3u b)p5b7443l;se (f+hztukgch acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed at 7,ypn.5; aoziq;abhi se8g0 v 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 magnite zn08phi ;ag.o7v,aib; qsy5ude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at 6.yop+r3 2k3 h q:9m zvzyqs;1gyekxu 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. What is the magnitude of thegok rym z13ke3 y. 2z:uyqq6 ;s+pv9xh force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of j8osiu7buz4 y-,pw4ksdqk17 a 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 is the magnitude of the force that acts on the kub,i7kyq puzss4 -w8 o7d41j 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 /virdb7z w o 3+pl,fhf*f8t ;nm); Q3 = 5.0 nC is at (0;/f3n*8r w tvb 7lo,ifz+ dfph, 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 w i 5r7bzwn,g/nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0,,7wrnzg 5i w/b 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 t r 9byxjgdu 11rb(8yb7he vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which y uyx g1r(jrb1 b8b9d7acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. Ag g0cvepq8o*(t what point, on a lingc80qo (g*epv e 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 at x/ap3rp mofetv, n:+prr j 5;n*llep 9* = 4.0 m. Where on the x-axis can a third charge be placed so the net fm;vljpp5rnr:lo 3re at* ppnf9e* +,/orce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where ctodw;g2y s4- wan a third w42 wtds-og;y positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total tkrbjk pv2f hu:qi:*mv )u8.,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 grav/dr)s 4z (/ /o:g9quyuymq acmr 6ooz7ity by the attraction of a fixed proton some distanc(gyzry qcuoa/sm d746 u//q 9)m :orzoe above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads2f/ 3:dmq d6pxyfz1q) ,siphg which are 30 cm long. Both are given identical charges, and the electrostatic repulsion/ if2qddzp 6xf3ypsg),qm: 1h 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 isf.iw-jw gksm2k0 x;8c the magnitude of the electric field at a distance of 1.0 m from thw0c;w- f. 8 xmgjikks2e nucleus?

  What are the magnitude and direction of the electric field at );gh3pwoxed,u+ k3y/ otp w)va distance of 1.50 m from a )v3texuyoo/ wwhk+p;),p3gd 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge.b5zp e. /-fzfl What is the magnitude of the electric field at the locationf/5 zfp zbel.- of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is py p e h-0otla 56(c4a5:9vp:fjfcbmj the direction of the e45y :bp0hm9e pfp-joc :( 5at6 lvajfclectric field?

  A 5.0-C charge is 10 m from a small test chdjj )s0*uv i)em ;c;pzarge. What is the magnitude of the force experici* 0msu zpe v)jjd);;enced 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 separated byef ((o3/g sc l*l5kpkp5.rhre )oq.nj a distance of 4.0 m. What ig r3*po5kerl. () 5p cnoljhe/(kq. fss the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm nlz ycbx.n-:;;8os hqmark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field :.c-synn 8o;lqxb; zhat the 30 cm mark?

  A 5.0-mC charge is placed at mls5pxg 28y8c(wq wi9 the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point yw9mi8w5 p(qsgc2l8 xon a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20+r /p7(rgjh0ohl ;b gu m. What is the magnitude of the electric field at the gghru lbo+0j p7/;rh(point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0/qlfmxkqx*9k6x7 x(s2:ih nj4p mi 8p.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fieh k/(*km iqpxn4p6qxf9 :s7ixjlx8 2mld at the center of the square.

  Consider a square whicue 6 4yl+asr,rh is 1.0 m 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 r6sr+4l e,uay); +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 when it is placed in a uniform elei yw7q03g/+p v fkjx(tctric field. What is the magnitude of this electric/gy3kj(7pi qw+0vf xt field?

  A particle with a charge gh1*mbcctrco8j 3()n 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 placed in an electric field of 6000 N/C565tf0 qqmdtj pointing downward. What charge must be p05f5tmqdj6 q tlaced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carrium9wh 5 j mf6v.w,rpd8q ic)(aes a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the forcevw5a (pm9,ruj q m86if.dhc)w of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm cc94hs mi 28dnfbbtr )( ,p;ghlarries a charge of +2.0 mC. What is the magnitude of the electric fieldbdnh brgp2i4t;fcm ,89h s(l) 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge oflfxplm(63 q (d,5wjo f 3.0 mC. What is the electric field 6.0 cm ff 3,5(fpx6l(djom q wlrom the center of the sphere?