State the law of conservation oj:o:.1x: xpxbhs (-z 4to gckqf electric charge.

  Is it possible for two negative charges to attract each othevlz*3/as5+9x tcklo92 nchqf r?

  Is it possible for a positive and a negativeley0m8;:z:klj e.2mbnoki9 s charge to attract each other?

  A glass rod is rubbed with a piece of silk. Duo0r(naus4koa * o)c (uxvz:4oring the process the glass rod acquiresoaz4 (* :uoon0 a4xoc)(rusvk a positive charge and the silk

  A proton carries a

  The model of the atom shows w+ x r(egjh.kv4 9s-pda

  A neutral atom always al dc:81t.hcd0 zsq *phas

  An atom has more elej l7l36bm( ns5aehkq( ctrons than protons. The atom is

  Materials in which the electrons are dztj:8 *wkk-k25qa oxqarc1 + bound very tightly to the nuclei are referrecxwdq5qka:k-o* rtj8az2 1k+d to as

  Materials in which the electrons are bound very l 33(b pn : 1myywi4lfkrlf7m 68hicw1qd.lp .soosely to the nuclei and can move about freely within the material are referred 8(1.i fw mi64mpy : q.3lk3rh7plwnd yslc1bf to as

  A negatively charged rod is brought near x0 2delwi6gc; 83pwmqone end of an uncharged metal bar. The end of the metal bar farthest from the charged rod wq 3;6l0i p2gw8cwemxdill be charged

  Sphere A carries a net positive charge, andsx(es *p 0 8zcsu4abgstdi.4+62rxy k 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 statement is correct(zksr*2g +0 4b4pays.sdi68 x cexust?

  How can a negatively charged rod charge an electroscope posrf+ *jsx i6f s:wbij-eby-d(* itively?

  An originally neutral electroscope is briefly touched with a iw 6rasrw+k0 3v:ph1e4:gxnipositively charged glass rn4e136i:sa gi 0 prw: vx+rkhwod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively chargs-wm5zq1xy2kic/ y v-ed glass rod is held near it. After the glass rod is removed, the electrm5xzq y s-i-wy2c1kv/oscope

  A positive object touches a neutral electroscoajid)ydq 9 4;o1zurss(w 9nsci* pt9y5 f*kx2pe, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to t* c 92px;tds(yoiarkq9i9) 4j fs5 dzyw1s* nuhe leaves?

  A large negatively charged object is placed on an insulated table (w -9tdhxwcy/.ial5g. 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 t9hw.- gdwt/ycxia(l5 ime does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb s2+08 -oa y t 9qdhrvneg5gnrv9o;:ym constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distancobbh2 m+nq,d8 4yun v5e d. The first charge is larger in magnitude th bq4+8dybh2 5nvn o,muan the second charge.

  Sphere A carries a net charge andz-;r4ptvf7u c sphere B is neutral. They are placed near each ot;tc7up v- r4fzher on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain forkgx6n( c9doxr8 d 4pg;ce. If the charges on both objects are dg8dx(c 46pkrno9x d;g oubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual atx4vc 7g t(ih/g)4s(1xa hgp*fpyn) qxtractive forces of F on each oh(x4vg4p(nf)acthy1gx x gi q/p)7s* ther. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Whz2p l(qjlp:aj :/egh /nd+1 qhat happens to the force between them if one charge is doubled, the other charge is tripled, and the separat p/jhl 2e:(ndqphl+gj 1z /qa:ion 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 happens t(c hck n)lbe e).n nqjg tkl5,bndh(rm,52f95o the magnitude .ehdgk ej)ln5(n59ql k52bh, br )tn(mc, nfcof the force on the 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 m. What happens t2so)pcvamkjh ck4 /+0o the magnit2+jmhpc)okc/4a k v0 sude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a dic2 6og1s )8;(zz lplrx+xnjttstance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0x n(2czrp+lzg6)tl; t8 jx1 os.50 m closer to the proton?

  A point charge of +Q is placed at the center of a ubzfe83/q0 nx 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 charb qfnex08z3u/ge 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 k oe tpx);2+mvg/qgw( 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 kgtx me+/op)(w ;gv2q 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 hziliyfw ( y/7.8gv*avector?

  At twice the distance from a t9 lf+upt(uei 7bpr.zji a/ 8 * v,dpecz1.ab4point charge, the strength of the electric field

  Is it possible to have a zero electric field value b +rp8bzw61i , fqf.avketween a negative and positive charge along th v 68kfwar,p1+qfbzi.e line joining the two charges?

  Is it possible to have a zero electric field ul egdu4*+7e kvalue between two positive charges along the line joining the two c guu ekd+*l4e7harges?

  Electric field lines near psitive point chaz-+x+vughq+l rges

  The electric field shu:6fwxu m ;tcw7k0-tc;z y- osown

  Can electric field lines intersect i :mjw*o.8 ogbhn free space?

  A solid block of metal in electrostatic equilibri6;st0m m+7l occczej ho sb;6;um is placed in a uniform electric field. Giveesc lchs6 mz+6om7c ;b;to j0; a statement concerning the electric field in the block's interior.

  If a solid metal spherih+fzufc:fj+g8see2*g f: ) ze and a hollow metal sphere of equal diameters are each given the same charge, the electric fieff f) fcg:*s ej2zg++u8:ei zhld (E) midway between the center and the surface is

  A cubic block of alumibgdx 8-vqp,e 2f3jp, bnum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said cbgx p8j,vdbqp , 2f3e-oncerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electrrh e7 ugoq.h 74h8xgyg.c/2xqic charge

  A positive point charge is enclosed in a hollow metall +df3et82n/ban ob5dv ic sphere that is grounded. As compared to the case without the hollow sphere, the electric fielfnd avnbeb td+8o2/53d at a point directly above the hollow sphere has

State three properties of conductors in static equiliwp8 6bz8fx)btbrium.

State Gauss's law.

  The charge carried by one electrooaqu9*:/r)jzrmxfn m 1:k fk6b cilo/w/+i f0n 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 mark:z dd;2fwejw ke0(, ny more protons than electrons does t;d2kj0 e,dwk rfw :(zehis piece of plastic have?

  What is the charge on 1j1,td 83bu ntrsts 7m: kg of protons?

  An atomic nucleus has a tezh;z 6hkvb/3 :/kttcharge 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 mC, 6(lei9 wr;nekg6lg wf9- t+ hsz6l)ptrespectively. What is the magnitude of the electricfg6r(n6l-i +t pelwkz)6e; gw9 st9lh force between them?

  A 1.0-C charge is 15 m from a second charge, and the fr0m:q wo3kbbk 4vl+*yp9 v h(borce between them is 1.0 N. What is the magnitude o0bqh 94bro pw*yk+3 vlmkv:b( f the second charge?

  Two 1.0-C charges have a force b.t0q nkpbi 1:m,y ozy8etween them of 1.0 N. How far apart are they?

  The force between a l1 fz.h1ph4 kn$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 9)sgeu8lko , kcm apart, experience a 1.0-N force. If they are moved to a new ssok 89k ue,)lgeparation 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 fi2 b2 kepees*r3gu.mf w(yzlisbl*5-/ rst chargye *- epw*. 2gsb5ll um rzeki23f/(bse 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 i*vi7v3wq/b ny *aop* at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm v37pi/*nyv*i*w obaq 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 = 2.00 mC a vmc*o l e-pd,/ylzpzl*19a 7yt x = 1.00 m; a lp1ly*m lz7oc/ -*p ,zyv9edQ2 = 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 the cent+yj7rxw e3o*qx/7p h xwjn-g6 er of a square, and a second point charge of -Q *y7n3 hj 7wxqrxe+j 6p x/-gwois 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 lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 6vg8qwgclx4 0nC is at (0, 0). What is the m8vw6q l0gx4cgagnitude of the net 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);7ivmirc6xo f pj2eh; +2er, m* Q3 = 5.0 nC is at (0, 0). What is tx *+6 hem;,o7p ricmeivfjr22he direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placu7jfxc nfidwm+;2-icpc3 evw7 y ;:1 bed at the vertices of an equilateral triangle which measures y+ n2i3 px 7f b;-u v:cmjcewc7fd;w1i30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges ofi5itit/z6e0 yglq9zeu a9w0,ss 53m d +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a gt9,3 z yi5mwqs06lie5 0szaueid9t/ charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the ah(x3os745ta lc)fek ou+ fo3 origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third 3 acu4ho l)oa k5o7sxft(e3f+charge be placed so the net force on it is zero?

  Charge +2q is placed ax ax-o*zir vpsk(0z,*t the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be plac-(xxo k ap,**0isrzvzed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total 7t /(d9b dcgl(+mcxeu 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 thgcu6b:s /;yowe force of gravity by the attraction of a fixed protou6sw/ ;cb:y gon some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung8q fp)ph9i) f1i +qdvk from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads i)+i9)vqhq pfidp 81f ks $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of theb,zp1 /y*r z l7utsrzi. d9is8 electric field at a distance of 1.1p/*9i bsr7.isylz8r, uzt zd0 m from the nucleus?

  What are the magnitude and direction of the electric field a8oqzu u l1gi:-k j9x)pt a distance of 1.50 m from a 50.0 x-juup ko lqg)9zi81:-nC charge?

  A 5.0-C charge is 10 m from a small tefyz1h0ovs : s4st charge. What is the magnitude of the electric field at the location of the :z4sv10fsyhotest charge?

  A 5.0-C charge is 10 m from aix f8)d2*sa hjma *-av small test charge. What is the direction of the electsa2iadm*-f xh) v8*jaric field?

  A 5.0-C charge is 10 m fzi/56+or. ri tnpvd( jrom a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge pl+ri/orz pjt( iv6d5n.aced at the location of the test charge?

  Two point charges each have a val,td70 wagz9a2 v jawv/ue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midvtgav d2awz079jw , a/way between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC char vi3x4cop0jr o9yc,( cge is placed at the 50 c(i9,4p occ0rox c3vyj m mark. 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 ankd+ xfq u cxu u(a5,ax6xd-sm/+t5m-yd a -4.0 mC charge is placed at the 50 cm mark. At whatqka5(d+ x-uyx mu caf-, m6+tsdu/x5x point on 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 = cpe 4.s;o,woarq5qru ;55 wvq 0 and x = 0.20 m. What is the magnitude of the electric field at t;,;4seq5ruwp5.oa5q wov qrc he point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Th*v+43mku;fzl)vjx a82i jknpe las;j aliz42xv3+ pnf8u*jmvk )kt corner 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 oj msm k7:j3hvy+g1ue-6. ubqfn 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 center?u3by gjfh-q:1um6j v.sm7ek+

  A force of 10 N acts on a charge of 5.0 mC when it is plac0*aldl l+;sqcrl0d-o ed in a uniform electric field. What is the magnitude of t s *dl;o0ll0-rqalc +dhis electric field?

  A particle with a charge ofo1e7hbvk *)fhd l w*-m 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 a261ybw0o+mt 3cyyn8p( mckkof 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended? c 2 bamy ckk(o8+p3yytn601mw

  A foam ball of mass 0.150 g carries a charge fre i:7 )uyc4xof -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravityf :47ieyxru) c. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Whcz k+autz ixx * 9m1gt-d115pwat is the magnitude of the electric field 5.0 cm from the sphere's sur zx*9 t1ucga1iz+m 1dxk-t5p wface?

  A metal sphere of rad. ng6)9ii jzuxy/c vh.ius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the spher . iv9c6i uj/).hzgyxne?