State the law of conservation of tyib8mcx :afs + czwy59t)(a -electric charge.

  Is it possible for two negative char/-7uxyhpp pic)ik: c6q-f4t:x)ll otges to attract each other?

  Is it possible for a positive and zvxw,sf 8 z;) hge7m:wa negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During snc7hr)j5u,x.a+ c b;0qypifthe process the glass rod acquires a posac y5iq)b;,pshj+7c0fr ux .nitive charge and the silk

  A proton carries a

  The model of the atom ,m5,gtsiytp-xk d p+* shows a

  A neutral atom always av6 o37wtr: hbtf+trzu ,c12b has

  An atom has more electrons than prot m+xl. rtxivs(z q+j)61cv6b hons. The atom is

  Materials in which the eleco0 ikclvl*wwo)bl;92;uei s;g8g y m +trons are bound very tightly to the nuclei are referredg+l kec 8wwvi;*o9gio s) y2lumb0;l; to as

  Materials in which the electronsjyjt91roj/mj 9,kkr 3 are bound very loosely to the nuclei and can move about freely within the material are referred to as1ok3 rm , 9jjjk/9ytjr

  A negatively charged rod is brought near one end of an giff6b+3od9m f1 qbkmf3*j/1dyh8w vuncharged metal bar. The end of the metal q 8gfmyb*6+/f 1fb wfjkv33omd d9i1h bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are placgqftny2 .3;zm ed near each other on an inqtmz ;yn.23f gsulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrosco h- 2y7p qk*gxamj03ufpe positively?

  An originally neutral electroscope is briefly touched wita/- qf,mtswc);21b v qe5yd ceh a positively charged glass1wsvetb2cd m-cqy ae) 5;,/ qf rod. The electroscope

  An originally neutral electroscope is grou+8dy woqti q9yb..0r xnded briefly while a positively chargeiyw. +bq08roy9tqd .xd glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electrosjam4w;rqvo v* (mc zw .;;tqwi.(bam9g.8cun cope, and the leaves separate. Then a negative object is bqawcguaw (r.mwq *vjm; vn;49.bm.(; co8itzrought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neuvhd -9i c9qjuqff8op wus(21 ;tral metallic ball rolls straight toward the object, but stops be-vud1( 299oi;u jfcshwfq p q8fore 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 C-(t(3ep(- oo xfiy qlwoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are 3z 81d7lzwu c; z pgre.lafq*1 f/8ahzseparated by a distance d. The first charge is larger in magnitude than the second */8 ruz a31d q;z 1f.zwfhg8pazc7ellcharge.

  Sphere A carries a net charge and sphere B is neu,sea c d2xpm7-tral. They are placed near each other on an insulated table. Which statement best describes t2-,7 xmapecsdhe electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges nyc9/vt ns .wpbsm .11on both objects are doubled with no change in separaticn./mt 9n.b1 py1vwsson, the force between them

  Two charges are separated by a distance d and emon0u2hk h+( axert mutual attractive forces of F on each other. If the charges are sepan0u(oh m2h+a krated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forcflqh)q1j,x. z e F. What happens to the force between them if one charg)l. h1zxqf,qje 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 equal to

  An electron and a proton are separated by a distance of 1.0 m. What lb7- q w,(ev+v bq(orchappens to the magnitude of the force on t coe,w+qv-7 blr(bq (vhe proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 mex5zftv0fzk) io9h1 x r.6zr*. What happens to the magnitude of the force on the first electron if a second electron is placed next t5e1k i hxv0 )t6 xz9*rfo.rzzfo the proton?

  An electron and a proton are separated by ek 4q::)prqwchmem +o*d:4s k a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the proton?k:4cq*4 ::w) dke hrp+mqoems

  A point charge of +Q is placed at the center of a square. When a second point y.a xh2yagwj)o2mz r woj80bdf)4;;xcharge of -Q is pla) joxazfy8 ;xa ;j m0g4ybo2).2drhwwced 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 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 equilateral trcm)sue7sm*)isq f/d niu8++aiangle. When a second charge of +Q is placed at one of the triangle's vertices, assd /iun+efa)c +) *8i7suqmmn 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 vector?ysupt- ,)nxzx)ym1n 7 bk:jn:

  At twice the distance from a poinjkc2;glg 0el :t charge, the strength of the electric field

  Is it possible to have a zev.rc 8gwmh().is/w thro electric field value between a negative and positive charge along 8 ( ws v)m..crih/twhgthe line joining the two charges?

  Is it possible to have a zero electric field value between two posk7vo,rs2 ) p:*xfjr wy+(l;9h udetmyitive charges along the lin+)*m:; d9kyso2(w vfxr7ty ep ,l jrhue joining the two charges?

  Electric field lines near psitive point chargesbamah-*cbm +cc:14d* mpea) d

  The electric field showl (4 :lyh.oy/ nebiuwt4-mg 0xn

  Can electric field lin vj2; lbkz;hd9es intersect in free space?

  A solid block of metal in electrostatic equilibrium is 0 2vz/,o wijskplaced in a uniform electric field. Give a statement concerning the electric field in the block's inteso k j0i/,zvw2rior.

  If a solid metal sphere and a nw/o wx7x.gj* hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and * /ow. wxgnxj7the surface is

  A cubic block of aluminum r :qlo)vx(np:uests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning thqpolv( n:x:) ue charge on the block's top surface?

  If a conductor is in electrostatic e33*r 4ppnol)u:5l gpu pc ksm0quilibrium near an electric charge

  A positive point charge is enclosed u ap fd(oi;-hw2cl-xj . csn-8in a hollow metallic sphere that is groundedds jc xulc-n h8p wif(oa.;-2-. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductorlmv8*avkh q 36ia q:.rs in static equilibrium.

State Gauss's law.

  The charge carried by one electron87smbi0jummr.)6l td 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 v.v.i2v1vo w d)l, 4nb*rn jbiof +2.00 mC. How many more protons than electrons does this piece of plastic hnj..r1 vb,vib24 )n l *ivovwdave?

  What is the charge on 1 kg of pr9c2296y rz viw 4hguu (7klwqvotons?

  An atomic nucleus has a c)to2+7va yxc yharge 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 cha t:noz)/hqf 4 l1q/b ie8kdu7irge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between thi 4dfe7nk) lhb 1ouizt:/q8/ qem?

  A 1.0-C charge is 15 m from a second charge, and the force between themg br robwdv84 +5rga09 is 1.0 N. What is the magv 5radb w 08g9gr+o4rbnitude of the second charge?

  Two 1.0-C charges have a force betwe j*rmi;2 2jx bkm.ty+sen them of 1.0 N. How far apart are they?

  The force between a t,0 yd8r bo h(plp6aa:$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initialmxue3-y:z zx. ly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new sepax ym z.-eux3:zration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chag,4m1 mfbmbrle-c1l+wge+o 10q5arp rge 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 whichm qcefol4ml+wm5g1 1 a01rr +,ebpgb- acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charsy( vq, h7oecwtgq 1t(hw9b-4 ge of +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 forqoc1(4-yqwg( h ,bs vtw9h t7ece which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mCpz* /yquro2 6qyxff/ 7 at x = p/67fxuz y y*qfr/qo21.00 m; Q2 = 3.00 mC 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 t :1 0tasiz x 4cixj28mc8d8s)k*teg gujf mm,-he center of 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 center charge if a third charge of -Q is fsmg )1x8i8gm u208c,i atc4zx-ej*m:jskd tplaced at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is ;1n ltc+zd7 noat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chargel7tn+zc ;1nod ?

  Q1 = 6.0 nC is at (0.30 m, 0); Q3rfq) ,lrcf0t 2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC chrlt 0qr, f3f)carge?

  Three identical chargesh8 .zeer(tqoo.59 e/js lgg9a of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the char9glzreo(qatg . o8j5s9e.h/ eges?

  Consider point charges of +Q and +4Q, which are separated by 3.0u4 gabda5ibr+ kj+:i0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the jrb+:uida g k0b+i 5a4electrostatic 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 =e: :poo 1cj vlks(9a0r 4.0 m. Where on the x-axis can a third o1r (c9 vp: k0oje:alscharge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chacvj fw;1r 5w*pn. rs5krge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zrfkw5jcnsr p*.1 ;v5 wero?

  A copper penny has a mass of 3.0 g. 7b ;vhvpxq(hbt x3)f b2 n:h6eA 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 grsz s 586td( qy17lnduaavity by the attraction of a fixed proton some distance above it. How s5n y1 6lsutaq(7dd z8far above the electron is the proton?

  Two 0.20-g metal spheres are hung il6j8m* miqg.ed)e* ;rton+ y+m cm8c from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatc*n+mm;6m) *iot .cery8 i8 d+eqlgm jic 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 +40ruzfi (h v6t567 6fx pocm43mwe. What is the magnitude of the electric field at a distance of 1.0 m from m 4wt6xf(ihucr o5v73z6m f6p the nucleus?

  What are the magnitude and direction of the electric field at a w p2r.g 7ym+eadistance of 1.50 m from a 50.0-nC charg.7w emrgp2ay+ e?

  A 5.0-C charge is 10 m from a small test charge. What is t7xpz+;u:acw r sg 0q-the magnitude of the electric field at the locatitq zgr-0au ;+sxc pw:7on of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the e )5-3b ogmmi:5vpbu itlectrigb ii5): bum5 o-tp3mvc field?

  A 5.0-C charge is 10 m from a smal- .;r n-bcavgnl test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test v.nbg ;-acn- rcharge?

  Two point charges each have a value of 3.0 C and are separatei,2qkqh ; /hr5/xjabgd by a distance of 4rhjq; g/ibh2 a5, x/qk.0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick awi(w0cxb3 *rfzn2t,jb b( rge+ jm:6wnd a -4.0 mC charge is plac: cmrjgb6(3 +z wie 0(w2t,nfwrxbb*jed 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 mmv -te;h/mgbs0 /gu l,a.wodly4x;y, ark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a l,xgh.y/gdmyu0 4 e o-;v l/;tlwsmb a,ine joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.qe.. wky 3-cgi0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between teyw3 c i.gk-q.hem?

  Three 3.0 mC charges are at the three corners of a square of side 0;ndy3 qbije7;v xz4 c6.50 m. The last corner is occupied by a -3.0 mC charge. Find the7j qx3 z ei46yvdcn;;b electric field at the center of the square.

  Consider a square which is 1.0 m on t nu okc8e2d+(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); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is the magnitude of the electric field at thedok 8+tc(2u en square's center?

  A force of 10 N acts on a charge 8of 80z)xievg 3fdwo1of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fiel g)0vf88 fwoxdei3z1 od?

  A particle with a char z/ el)o*lijm3ge 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 t0ylr syx-(0 s/. yrkein an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suxr.tl0y k/y(rs-y0 se spended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. jd+1 75alai lvpk0.q e The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric f5dp1k all0+e. q7ai jvield?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is tvk 0 rokn6g,yy9aqr6:he magnitude of the electric field a0oyr9g ,6 :ykvkr 6qn5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a xoo,,o91 ov6 wuj k:fzcharge of 3.0 mC. What is the electric fieojzu,ox ,fwokov1 :96ld 6.0 cm from the center of the sphere?