State the law of conservation of electric chn8dqq9kx3 07yj0 li iuarge.

  Is it possible for two negative char/bjdke 7l7 yp:bo x8+lges to attract each other?

  Is it possible for a positive and a negative charge to attract eaxps wt )m+8r-pk.oj ;p 0 xwx/i5;4o.oyaurqsch other?

  A glass rod is rubbed witaxzovmqi 3a8m;fizf5e25 ) *vh a piece of silk. During the process the glass rod acquires a positiviv)f zva3i;qfo*5mxem82a5z e charge and the silk

  A proton carries a

  The model of the atom sh9wbi9of7g + ae8otfy0ows a

  A neutral atom always wf m.ub3i2 8oq l9zwy0,yxq:xhas

  An atom has more electrons than protons. Thedx4+u zq5-in akgyfu1j *)qju20 ryu. atom is

  Materials in which the electrons are bound very tightly to tgc5 k24+vr zev3/qjoyhe nuclei are referred to2 zr/jvoqg5e4v+ 3cyk as

  Materials in which the electrons are bound very loosely to the nucggk ccd2-wa/g ag+3v8 lei and can move about fre+ c/ vd8c-ag2 gkg3wagely within the material are referred to as

  A negatively charged rod is brought near one end o8m1tup/ 1zizf f an uncharged metal bar. The end of the metal bar farth1p tzfzum18 i/est from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutra06*msq ix6pgal. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire i6x 6ms q0*apgthat is grounded. Which statement is correct?

  How can a negatively ch(+gh ;om9 w 8eo;fhcgjnxr 9b8arged rod charge an electroscope positively?

  An originally neutral electroscope zo-b9 p*a 62fbopvg*vis briefly touched with a positively charged glass rod. The electroscopeog fpoa6bp-2z*vv* 9 b

  An originally neutral electroscope is 53v1poj lsmq28r y:x bx .u4xwgrounded briefly while a positively charged glass rod is held8o .jq4px v5y:ux3xlb 2 w1msr near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leavnvdx )cj uf4:9es separate. Then a negative object is brought near the electroscope, but does not t4:cfjdvu)n 9xouch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tabr2 kig w3t/3hy kf(5wxb 4ho*ble. 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 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 ball35wfi b*24(khryxh kt/w gob3?

  Charge is

  What are the units oeuhdq9.: +j *du3 fj0bs7 ud+cqigdn-f the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a di 5yoww 86 b2qfs0;wywxstance d. The first charge is larger in magnibfw2086w x;qws5yw y otude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They 8 fcd(qah61iaou o o nej0o)+/are placed near each other on an insulated table. Which statement best describes the electroenfa qoi/o)djc01ho6 ( +uo8astatic force between them?

  Two charged objects attract each other with a certain force. If y.xim9q g5 * h:ygqmz)the charges on both objects are doubled with no change in sepq.m yhz9qm:*yg x)5 igaration, the force between them

  Two charges are separated by a distance d a)67o,n4 v5l796 uxge, ml ilvyonhyownd exert mutual attractive forces of F on each otlg mx5ov oe h ,yluli6n7n,v4)owy769her. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each othe6gaz-j * (wnpt ; )afafh(zmc8 v2ou3sr with a force F. What happens to the force between them if one charge is doubled, the other charge is tu2o n(wzp 6(g-jca h)af;*taf8z vm3s ripled, 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 distancfq8 skv;pi1sz14xcwaqe.y 0 2e of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to th8f;qpce1iv0 z 4.qsk12a wxyse first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happe*az hxvr3w mt 1d1y45qns to the magnitude of the force on the firstm1w yz 14*ahd xrqtv53 electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What htd6u*nwkl3bk-l3s +mappens to the size of the force on the proton if3d smklw3 -*tul bk6n+ the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center oq 40xkf0 mcolyb99 7esf 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.f9xcoby sq m94 l0e70k 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 t3-lgz6o6db*w-wf *dp atg;6ovd wc5 t he centroid of an equilateral triangle. When a seavtgt- wd3w*-d c * bzpl56fogow;6d 6cond 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 charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a lkjeoj.4lnqs. i-f98 vector?

  At twice the distance from a point charge, the strength of the elec fw0(:ql ,,ftk5skvzztric field

  Is it possible to have a zero electric field valuesrj,s)u( s6ydoq x; ,i between a negative and positi)6(s,is,uxs r ;j qdyove charge along the line joining the two charges?

  Is it possible to have a zero electric field value betweegy4g7:zrac-i4) tm2w cnog 0ln two positive charges 0 wglcncz2 i 4to)y:mg7- 4garalong the line joining the two charges?

  Electric field lines nea ,he,hy,fi tvj.d;z8sr psitive point charges

  The electric field showzzj5)ep93 7h muxx3wnn

  Can electric field lines intersect in fr udkz f ps++09d)rfxq9ee space?

  A solid block of metal in electrostatic equilibrium is placed in;b+zwj ede.r*6 2s soc a uniform electri web*r .c2 ;jz+s6sdeoc field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a ho31ezrx5z 6p emllow metal sphere of equal diameters are each given the same charge, the electric 1mzxz5 e3e6rpfield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform elk9b vdeu0 ,d b-hm4m7zectric field is directed straight upward. What c7mudbm v9he4zdb0 ,k-an be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium nh*ww c:lm-z5oarc-y 1 ear an electric charge

  A positive point charge isfoqh*;7o,xzxnc h0i u-b0s8f c fn-:b enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point di fnci, n x-0hxs8c 0b:fb;h*f- uoqoz7rectly above the hollow sphere has

State three properties of conductors in (mzw*g3z ,m k-wc+e oj m:rx59wr2zfgstatic equilibrium.

State Gauss's law.

  The charge carried by one electronc429 9e.:trgc +ovccmnb u)az 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 gf*m,+fd: lxe,cf7 (nna9you+2.00 mC. How many more protons than electrons does thisf :c(fnel+ ,mn*ag97df,u oy x piece of plastic have?

  What is the charge on 1, lh -7cen5kgtw6uzq4 kg of protons?

  An atomic nucleus has a ch.-a0 t8b6nvxbc ctyq36l8ygwzsyul ./v8 yp8arge 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 c x3:/tjoed m;ym, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forcem:yxd; t o3j/e between them?

  A 1.0-C charge is 15 m from a second charge, and the force b1 o*nju3oy:brc.w a p5etween them is 1.0 N. What is the magnitude of the second charup.a:o*1bnw 3y5o cjrge?

  Two 1.0-C charges have a :f,jhfgo+k hmfaqw3 -: 7qj10wwfd k*force between them of 1.0 N. How far apart are they?

  The force between a ;m4u4k yvq-0g s y.bfm$30 \; mC$ 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. Ijh:ojf3v-;fk hh0 8sko 7x5t yrugk2x )f/8eef they are moved to a new separation of 8.0 cm, what is the electric force behhvu3jf fkk-f;t eo 5ey/ 78g0hs x):kj82rxotween them?

  Three identical point charges of 2.0 mC are pl7; 0 dozf1gk:w xbauixv7 34nxaced on the x-axis. The first chargegifz v7oxa ;xu3w d x1407n:bk 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 which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed aa lg++1 xrenkdl-:r g+t the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 1l1 kgrxge+nl d++a:r-00 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 positiojox2p y*znq.+ ns: 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 the force on the 3.00-m z*pjq.2oy xn+C charge?

  A point charge of +Q is 2 c4;z gtnzhomohw*lt5us- (4placed at the 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 placed at the g ;z4(c4uo mzsth -wh5 *notl2lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 z0 dz:qerd(d6 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chargedq:dr06e dz (z?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC iyq.:2 rv e8cpqs at (0, 0). What is the direction of the net force .cp :eyq2rv8qon the 5.0 nC charge?

  Three identical charges of 3.0 mC are pgh*ht9g,puh/ iebvz 2*l7g; 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 9vg*7h/gh2zb piuh,gl p*t ;eof the charges?

  Consider point charges of +Q an vh r w*cy4z+mjkp,6az.8rz r,d +4Q, which are separated by 3.0 m. At what point, on a line betwp* c+ jmr48r av,h,zzw. krz6yeen 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 = 4.0 m. Wd 4ccacr3sv2( s(q3cphere on the x-psccd 2ca q((3 r3c4svaxis 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 yu;g,v-x1 xyt g5q5yfplaced at x = 2a. Where can a third positive charge +q be placed g yf; 5yx5 qvg-yutx,1so that the force on it is zero?

  A copper penny has a majnlmw5ww:*8 i ss of 3.0 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 (uzfzy xb li 3dhw88y bc q109d0-)lbmthe attraction of a fixed proton some distance above it. How far above the electron is the proton?0x( byzz )38icwlm8hd9bfly1u 0-bdq

  Two 0.20-g metal spheres are hung from a c .t(sc rr6qfh5ommon point by nonconducting threads which are 30 crtsh5rq f(6.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 a charge of +)rq6pcd *wwh-, 11wv;lch erh40e. What is the magnitude of the electric field at a d1l r1c,*qh r- p)hwwwecvd6h;istance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of y9x5b1yjf f:cq o0la31.50 mbjx:y19foqy50lac 3f from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is trr8 aa*k3wt zh5a -x8rr.l2n che magnitude of the electric field at the a-t .w35 z* x2l r8hrnac8arrklocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What hmvs.w9 rgo1*is the direction of the elegvos9hmwr . 1*ctric field?

  A 5.0-C charge is 10 m from a small test charge. What is the58z l;/ioz . ja8ylgvz magnitude of the force experienced by a 1.0 nC charge placed at the location of the test cha jvyg/.i zozl8;az85 lrge?

  Two point charges each have a value of 3.0 C and are separafxq4smfs4l3 sk +q+s+ted by a distance of 4.0 m. What is the electric fiml x+3 qf4 s+qksssf+4eld at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter s b;jb05l:kn/yeon 4l vmc4xc-tick and a -4.0 mC charge ;m0kjb oeb 45cncx:4-l n/ylvis placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placedl1;grk+ukrwn p 8; 2hr at the 0 cm mark of a meter stick and a -4.0 mC charge u8 kn;h+1; k2rpl grwris placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 dcwqsbg11/p;pzm,qe b0 x3 3cmC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude zc;30b1wq gp3qcsx be1,d /mpof the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a. h1(s(k .zrja 24hsam e1nzjd square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squ.jsk4h((z h.nms2jara 11 zd eare.

  Consider a square which is 1.0 m on a side.3rx5ti iiio7- :o*ozs 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 z*i x ii57or:ooi3s t-the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a us )e*(4zj2pupa5azt ,3j vkxmniform electric field. What is the magnitude of this electric fta4 s3 zmaj5ep2 kpuj)z,(vx*ield?

  A particle with a charge of 4.0 mC v/xi6y.z9wjxafo9/vk k ei+5 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 electtgp/s4y jt26vr l*t7jric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be rt6s*y7 j4l/jg2t pvtsuspended?

  A foam ball of mass 0.150 g carries a cjrd:) d-:n1w(hcze r t.o6g ggi*rv-zharge of -2.00 nC. 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 electri 1-wrg)t : ong:d ijcz(*-h.de r6gvzrc field?

  A metal sphere of radius 10 cm carries a chaeagu ;e-g)gf 9rge of +2.0 mC. What is the magnitude of ugfege);g-a9 the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius:mx5 u m.hjstyck,7 r7zc1bi1 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from t1cch7 m,.7 jsr xu 1zmtyk:5ibhe center of the sphere?