State the law of conservation of electrt -zdjazlx/8* ic charge.

  Is it possible for two negative charges to attract n-lug oq*uz,o6p )pryh d3j (6each other?

  Is it possible for a positive and a negative charge to attractfslj3b2-k g)d each other?

  A glass rod is rubbed with a piece of silk. During r/efq6c1n5hk u86rff the process the glass rod acquires a positive charge and the silk 1r6c8unf65 fkf/re qh

  A proton carries a

  The model of the atom shob.tws z ),oxvce 9 t (,-xtnd3vkz1x(bws a

  A neutral atom always hdf8i-()sou j aas

  An atom has more electrons than 7 aeuxmfqw+ i3fw8(3b,rf 6qtprotons. The atom is

  Materials in which the electrons are bouw*tk :i .8ww3/f 1y jakdfsqr6nd very tightly to the nuclei are referred to f .wdw: 8kqi*yj3f w/at 6srk1as

  Materials in which the electrons are bound very lxb n/a.w3p( fvoosely to the nuclei and can move about freely within ta w/.b(fv 3pxnhe material are referred to as

  A negatively charged rod is brought near one e;d 0)p 8wnunjviodxok 48*sn1nd of an uncharged metal bar. The end of the metal bar fart; )48ndx1 0knwp 8udos*onvji hest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutralo/f tu o*pa.m4:6j ayp. They are placed near each other on an insulated table. Sphere ftj*4:pumpaoy.a 6 o/B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscopz2k v- -v1vhppe positively?

  An originally neutral electroscope is briefly touched with a positively chy3ajt6k85v c yarged gla cyv58ja63 kytss rod. The electroscope

  An originally neutral electroscope is grounded briefly while a posit7;1/)aeuaalccj ol+n7b d nk3 ively charged glass rod is held near it. After the glass rod is removed, the electrnd;1 ecn+o7lab/k3 7 )uca jaloscope

  A positive object touches a nev (n-yx3z k0qsutral electroscope, and the leaves separate. Then a negative object is brought near the electrosy-kv30qn ( sxzcope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A n-new f,i kx. 3yhaz44ieutral metallic ball rolls straight toward the object, but stops be4fze, xw -4aik yn3i.hfore 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 ta:v0i4y 4 em2dff(a+y3s hly 2q8nwvvhe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is eem:9qh5 v -rfelyo)*larger inh)f :ey-5ev*oq r9e ml magnitude than the second charge.

  Sphere A carries a net charge and t9q )ne)d 6m1wycom f;sphere B is neutral. They are placed near each otherm do q ;wt9)yf)6ec1mn on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attrah gox oe0j(wg1k d6b58ct each other with a certain force. If the charges on both objects are doubled d(w0 o6kh 8bgeg1o5jxwith no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual atty10+(dh pcv i p +b ugcftq-pu//6cwe3ractive forces of F on each other. If the charges areuye 6+h3tc pqibvud g/pf/ 01+-c(c wp separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each othe9k(/ha j4cixhk a5ughp v4g 3(r with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distv (j4i / 9(gckx 4hhu3hkpa5agance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a protvo-7u2 yh4 4 bjxjbxif( b7w3ion are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proty34fb 4oxwuj ji( 72ib7 x-bhvon if a second electron is placed next to the first electron?

  An electron and a proton are separated byc (qegjs, n2.b a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second esbjcgq en2( .,lectron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens. gvex3gguj*+dm*p90q) raf-s *ruml 4; tgrc to the size of the force on the proton if the electron is modm0r -4vg egg*p uu3qx.*9a rgcml+j )fr;st*ved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center o9w hjj-1w yfkbt 5eb64f 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 N16bet49 -bjw5w ykjfh 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 th6y lcujuyeu igph.*h /:h7u-.e 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 ac.u.ly:e i/uh6*y7chu -ujg ph ts 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 isz l vdt o3 53ku2(,wes*uuqc2l not a vector?

  At twice the distance from a point charge, the strength of th nq wtx/,-mmj8e electric field

  Is it possible to have a zero electric field value b0m92t)s9uf iz2 bqr8;cq :jsalk zhi0etween a negative and positive chargel s2) 2uji ak smtr:chqz9 z8b9f0i;q0 along the line joining the two charges?

  Is it possible to have a zero electric field value between txgtagj(r05 a3,t 9dbp wo positive charges alon9(pxgt,3bdr05agj at g the line joining the two charges?

  Electric field lines near psitivhrgh8 cgxk+g ; q41dbbw5*7qqb ux.e0e point charges

  The electric field shd:t2lxh, ehd j3)vi+ sown

  Can electric field lines intersect in fk:gz9z((v al i yif(:bree space?

  A solid block of metal in electrostatic equilibrium is placegu200aw5 dhu c,.,tivge(yuod in a uniform electric field. Give a statement conceruwh eg5,, .o20(0vgcyiu udatning the electric field in the block's interior.

  If a solid metal sphere and a ho1+jmyf8xpbpgi ,x22e llow metal sphere of equal diameters are each given the xbe 8y+p,jp2xif1g2 m same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a w+zzlo rx 7/;mgc, .h+vkw )quwooden table in a region where a uniform electric fi vz)x ;wzgqurchkw+mo/,7 l.+ eld is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near ahf bo1+glswe51y.w 1pdmr63 jn electric charge

  A positive point charg,9ssf gr :nbr 8*fri6ee is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the9sr8f rf:er,n6bs g*i electric field at a point directly above the hollow sphere has

State three properties of rr;z u rtx191vbm(o0t conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron isz0t/x0rbz1)q doj 8y k $e = -1.6 \times 10^{-19} \; C$. 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 m2 9e ;s2:lsnny9lw hidore protons than electro2: henl9lw;isny9s d2ns does this piece of plastic have?

  What is the charge on 1 hs ;/v90djlfv6lem ,ma.hwm 6 kg of protons?

  An atomic nucleus hasjnm n q*e:by.g7h )j4y a charge 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,l:bb*1 )xzw 5 azqbp+f have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forbbzab+5 z)l*:p fxw1qce between them?

  A 1.0-C charge is 15 m from a second charge l*r65+au h+vxmnxpv0, and the force between them is 1.0 N. What is the magnitude of the second cha rva+n*0pml+vh 6xxu5rge?

  Two 1.0-C charges have a force qp,kz (d. lso:zrsh*8 between them of 1.0 N. How far apart are they?

  The force between a s v 8hsuc5n *2blybr3q:t**oc $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apz1b2r2f8 * af)r j, excvhy(ziart, experience a 1.0-N force. If they are moj)b12irry*8( hf,fz2zvx ae c ved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point chargh7(64rhizoq*un3 kf 3e 9xaqb9v -kpo es of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50aop( qrk*f 3hez6x-hq ib k4vn 93o79u 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 j0 md 8h8ddk+cvr6;xx charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, ad6x mh +0 rxdcdkv;8j8nd +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 positions: Q1 ofe 2 -d0tcuvofdap 0h:ggqd )yf q52-ryt(03 = 2.00 mC at x = 1.00 m; Q2 = 3.:eqpdody0 c--5hdv (fygf 00r 23 tatqugf2 o)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 the center of a square, and a second point cl ;nokf ro3,+mw;lzg7 harge 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 o7ml ;w ,gl3zn ook;fr+n 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,e( 6.u,heey-w3f dgvyowy7/7k5y yjn m0jvy( 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0y-5 /vo7yeg7 ev(myfn(63 uh ywjd.0j, ekwyy). 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.vd6 :dy hgwyba89vdpj57ii , . hlqo5-0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wyd :yjhq.l9 6ii5,g5d- v7ahwb opd v8hat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 9y aph0,t+;7beh xmik 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 actsb0at9xhem7+ik; y,h p on any one of the charges?

  Consider point charges of +Q and +4Q, wnxr6u vq/98yfsgj si, 1-tl f f-zr,0nhich are separated by 3.0 m. At what point, on a line between the two charges, would it be possible trfv 0j ,6i19 -sx/lnuy t8,ns-rfzg qfo 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 0t5f,gst yq tlei 8+a*+9.0-C charge is at x = 4.0 m. Where on the +yslate g 8*ft 50ti,qx-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placedp itn:9hlp x :41vwy(q at x = 2a. Where can a third positive charge +q be placed so that the fo:ppn4wx 9lqy 1t i(hv:rce on it is zero?

  A copper penny has a mass of 3s6*a 8uyq ;qadqkow,z,+-bnn.0 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 gravity by the at/jo:jkydue: tez7c )/mbp77t traction of a fixed proton some distance above it. How far above the el/ ytjjp7/dub7:t 7coe kz:m)e ectron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads 2vqfq8z qr71d which are 30 cm long. Both are given identical d82qzqf7q1v r 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 magnituva,x (tm528 )-biu ri*vgmlxxde of the electric field at a distance of 1.0 m from t, 5livu)v-x armb8mxg t(ix*2 he nucleus?

  What are the magnitude and direction obqhlo ;1(mdu*mvs,t3 ykfp ei/0g3 6 cf the electric field at a distance of 1.50 m from a 50.0- ld*;o0 cp6ek3sv,h u/gybmf3t1q( minC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the33rr (-d/zjxo: imhyo magnitude of the electric field at the 3 -j/im o3hory:dz(rxlocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the ce e,d;v5 b-xxelectriexe;- x vd5,bcc field?

  A 5.0-C charge is 10 m from a *ff-.e9 *13ty-a yb8mpns1p nz dckvrsmall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chaya.c k9ff81ep *3ynvbrt--*m1z dsnprge?

  Two point charges each have a value of 1dlf bvx1+rv9+ik a;nq m65 wr3.0 C and are separated by a distance of 4.0 m. What isx1+rb5rld1fv +;m6w v nqi a9k 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 and a -4.0 mgrey)86:tm 8 y3omlkiswg5 h *C charge is placed at the 50 cm mark. What is the electric field at the 38yg k 3*tmoy6 h)ris:wl8mge5 0 cm mark?

  A 5.0-mC charge is placed at theyi+ fq2v r-od9 (.eylk jp02qm 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joie jdv yl+2p2my-ki f90q(qo. rning the two charges is the electric field zero?

  Two point charges of +3.0 mk fsu0p.t:d.k+ctjyu2 sq. wvq; :w 2oC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of thuus.qkoptfq:y2 c:jk ;w d s0.v+w.2te electric field at the point midway between them?

  Three 3.0 mC charges are g;ze3w udc+1*d w,w lww; 0vhnat the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center w *,w wg;l0nd3;uw1wh ve+cdz of the square.

  Consider a square whichqb27g ca 20uv1q5 lkqb 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); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is the magnitude of the electric field at the square's ce0a 2qgbblquq7 2vk c51nter?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform electr.zbyn ,:bpt v)ic field. What is the magnitude of this elecp b.:b)z tynv,tric field?

  A particle with a charge of 4.0 mC has a mass of .w9 zu9x64ekqp+sbe e$5.0 \times 10^{-3} \; kg$. 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/C pbncu1 / b8ga:ris cf,-ointing downward. What charge must be placedu,f/sbnb :gc r i1a8c- on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The balll56r1*ltqcsr* yr8 i5e+fff- v ,lok o is placed inside a uniform 56lty *cf ive,lk*r5r r+o8qf-1lo fselectric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charnmu-srr pi)0xw3ce: ysk 5,7 oge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the s skunoc:p xi,5m e-wr3)0ysr7 phere's surface?

  A metal sphere of ra 2at0de xcd(i0dius 2.0 cm carries a charge of 3.0 mC. What is the electric field00d cxa2tie(d 6.0 cm from the center of the sphere?