State the law of conserv79kknmr e+x,wc m5u+pw otx*v3 itc:,ation of electric charge.

  Is it possible for two negative charges to attract each g3njm9n)rkcht8 o+t48ceorfxfl o*,*lq 55sother?

  Is it possible for a positive and a negative charge to attract 87l*thv xj)7ryrbpv4 b85 sj8 qh3epsd/p h0veach other?

  A glass rod is rubbed with a piece of silk. During the processcs:g( f x;xcu9 the glass rod acquires a positive charge anuf; xx(cg9sc :d the silk

  A proton carries a

  The model of the atom sz0- td bj htg8ut2fe27hows a

  A neutral atom always h9itw8,n)z oldgp7 krc7fs 1:vas

  An atom has more electron9b(7g vaw-cb7e2fue ns than protons. The atom is

  Materials in which the electrons are bound very tightly to the 8;v))2hn so lutdfhd *nuclei are referred t2hdl)nh;o 8stdf*u )vo as

  Materials in which the electrons are 4x :j+dszriul ci1(j5 bound very loosely to the nuclei and can move about freely within the materia45izjsdilj1c :(+r x ul are referred to as

  A negatively charged2h 26f;y cqlvl rod is brought near one end of an uncharged metal bar. Theyl26q 2;cv hlf end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pla1b (j- 4*6x(v v7kia/q jilq.oofn xncced near each other on an insulated table. Sphere B ( ol.q(4*va ikcxoi qvf76j/1j nxn-bis briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chargedf8eqds.-dfb5ws4 o p- rod charge an electroscope positively?

  An originally neutral electroscoe9jrky / )p pzp;bs4l:pe is briefly touched with a positively charged glass rodp)skpr yz;4ljbe:p/9 . The electroscope

  An originally neutral elepsuykcn9 l,6*l8f. pger (v w0ctroscope is grounded briefly while a positively charged glass rod is held near it. After the glas , * yp9k(.8wceugsnl fpr0vl6s rod is removed, the electroscope

  A positive object tou r.hgpi,tm*wcr +z23rzt 6n2pches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leh6 p*2pz,g2w3n rcztm.rr+tiaves?

  A large negatively charged object is placed on an insulated table. A neugiaie e rxj2w3 39msje/fn 255n a3:ontral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rgi3sji en nax/ en3:e5fra95wmj2o 32olls 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 cb .zhx)cjsxof*u6+/ 9 c mrai,onstant $k$, which appears in Coulomb's law?

  Two charged objects are separah252xiuc 1k(f ozu r(.c iiie+ted by a distance d. The first charge is larger i 5eikcu 2cii2zi+o.r(f(1 huxn magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They arm(l f5w( enzj0x2 ra;he placed near each other on an insulated table. Which statement best describes the eler5a0w 2(mlnzej;(xfh ctrostatic force between them?

  Two charged objects attract eacgb5ny3 2va(we5 mkm6oh other with a certain force. If the charges on boo( 53 vye5mbm62nk gwath objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractw 1b*zk;jw3j* ykhc. cive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forcb;1*w.kj *wy zkchjc3es?

  Two charged objects attract each other with a force F. What happens to the fo-ny csa 3 nu9/o))uejc*l rbl4rce 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 originaa/l jon) 9 cc)u43u rnsl*bye-l value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens toq+tae/ : lurk(+ *;vrt2xtw fe theutf kr/*(xv+e;rwt2t l a+:qe magnitude of 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 1.5j +j-dt5p dai0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the proto5 d-+jaijd pt5n?

  An electron and a proton are separated by a distance of 1.0 m. Whatp 7ds4rje- 9mrj, f4ab happens to the size of the force on the proton if the electron is moved 0.50 m closer to ther4ajdf9-mbrp 74s , ej proton?

  A point charge of +Q is placed atc 8l(q*a mt*ma,e v ;iknc4l6n the center of a square. When a second point charge of -Q is placed at one of the squarelv8 ,e4clt*c*q( mm6;knai n a'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 :)(vlu zcg ot-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. 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? ot z(- ulvgc:)

  Which of the following is not a ve8a kcaab 2-go1ctor?

  At twice the distance from a point charge, the strength of fu5v.micj 5 bqbez3*( the electric field

  Is it possible to have a zero electric field value between a negative and r1;tcb5y (fc: t*q) cgaphcc*,a4 vq bpositive charge along the linpq;q,5( thf cvb 4c*:gc )1*yccba arte joining the two charges?

  Is it possible to have a zero ef/sobg id4::,fnm d d1lectric field value between two positive charges along the ndd:ofbsd 4m1g,f/i:line joining the two charges?

  Electric field lines neei 82b n )i6h8ycm3akrar psitive point charges

  The electric field shown tdoc2.f-/x fj

  Can electric field lines ivkpxcjr3x 274.s h3 t8mxpf5vntersect in free space?

  A solid block of metal inzn p1knxb21h-i.w b -q electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field iq n1 nb2 zxbp-ki-wh1.n the block's interior.

  If a solid metal sphere and a hollow metal hu9*r)kzc/ej sphere of equal diameters are each given the same charge, the electric field (E)c/)9uz hrkje * midway between the center and the surface is

  A cubic block of aluminum rests on jfs3c7 (dnh0(pi pbftn15f;w p(m 8mba wooden table in a region where a uniform electric field is diref7mhn(f bi(b spw t3;fdc85pj0p (m1ncted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostat 2jlkru:zfrq suifc2jzxhuy- 2/ie* c(*h67+ ic equilibrium near an electric charge

  A positive point charge is enclosed in ag9z5o1sox)m co**vi h hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sxhoo*zm9cg v1)*i5 osphere has

State three properties of conductors iq q+(aapv:e :hn static equilibrium.

State Gauss's law.

  The charge carried byq,.i73d b qyvwv.9bak1.r nrw one electron 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 thann y;jmk (k4i)x0*pwmi electro)xik;n 0j piw4k(mm*yns does this piece of plastic have?

  What is the charge on 1 kg of proq(9my r,sr ;gry6zy;ktons?

  An atomic nucleus has a char .ekot5n lvrqc; oq,9*ge 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, hav2/:ez +nu u tt/dn+wvxe charge values of 2.0 and -4.0 mC, respectively. What ev dx ut/zw:+nu+2n/tis the magnitude of the electric force between them?

  A 1.0-C charge is 15 m fronni*1y:k fiey+a u n( 7ao)pd-m a second charge, and the force between them is 1.0 N. What is the magnitude of the seco n(aao:kin* )yie -p1+uf7dynnd charge?

  Two 1.0-C charges have yfxnw x x2n-tmz2 ;1c8a force between them of 1.0 N. How far apart are they?

  The force between a l* vrtm+rps9 2$30 \; mC$ 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.(kyk,)b, vkztf ppd0+0-N force. If they are moved to a new separav ,bp0k (f)ptd+yzkk,tion of 8.0 cm, what is the electric force between them?

  Three identical point chd33ac .m t3 4kq o:b*pvfsa/jqarges of 2.0 mC are placed on the x-axis. 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*s:qm3/ o . f433kjtbqavcapd 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 placv(ofei9a s m,,ed at the origin, -2.0 m C to the right at(ovm,e a9i f,s x = 50 cm, and +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 ep -0xgs uqw(2n-nu cl:-zyh4positions: 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 theul0qen nu( pz- :cs-2- xy4gwh 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a secfo)v1 z )hq)x687qlcwdg 9hntond point cha9 dzqoft ) ) v1x)7hwnh6qcl8grge 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 lower-left corner?

  Q1 = 6.0 nC is at (0.30cevsj.; s,4x; gb8c) n1xaaeg m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0)aa)c sex 1 ;cg,n4.bgejx;v8 s. 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 nC is at (0, 0.1bg06rh :.yc bi vds2a:0 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the ne sdac02h brv:gyi.:6b t force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are pla)l01nbscr, ey jfq qh by6v4*bvm34c4ced at the vertices of an equilateral triangle which measures 30 cm on a side6q* r4 ,m cl3qbe c)ybv0hv n4jyf4sb1. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charg ini7wqrkw vjyzr t (.x/mv,: 87ue-e+u7b0vpes of +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 rv,0r7:7.m + q/etbiwujk zvvyp ie8n (w-7uxplace 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. Whek9:do/ucb23ue6d :sx+k8 dl + yhfienre on the xcy2dk+ous8/lu6d+i:xb3nheef : d 9 k-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the ori7a4 stc ,z8cswgin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so cs8ws,ac z7t4that the force on it is zero?

  A copper penny has a ms:7wlvt c xw4- a,6onpzkne/i). 3ju eass 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 the attraction of ax+h w 8eomy2m9 fixed proton some distance above it. How far above the elecm x29+ehmwoy8 tron is the proton?

  Two 0.20-g metal spheres art 7olrnh. p1lbc-o9(qt o4m.qd- aj8re hung from a common point by nonconducting threads which are 30 cm long. Both are given ident 9 r.op nb-crooq71l 4qt.dth-(mal8jical 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 +40z6lzb6 c;1qmmb( o vu7e. What is the magnitude of the electric field at a distance1(bz6om7 cq;l6 zmu bv of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fielxyow9ep.q ljh.j., x4 d at a distance of 1.50 m from a 50.0-nC charohj j.9e .ywql,x4px.ge?

  A 5.0-C charge is 10 wj*(d:bq(d jc. wgwd,mv7u*dm from a small test charge. What is the magnitude of the electric field at the l(.*d (,jbq*wd wwdc7mgj dv u:ocation of the test charge?

  A 5.0-C charge is 10 m fromg7rrp bf-3s9. y3hn mz a small test charge. What is the direction of the electric fiemsnf7y- rhz.3gb3r9 p ld?

  A 5.0-C charge is 10r kcp1(3z f-zo m from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge?1fko (3przzc -

  Two point charges each have a value of 3.0 C and are sepalev ,kkh7x cg,kzm m 78j1b4dx;a)b; vrated by a distance of 48kam djce m, 74v);lx 1,gh b;zb7vxkk.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 mescfex) o/u1*s m5vr. iter stick and a -4.0 mC charge is placed at the 50 cm mark. What em sx1s/f i)curo*5.v is the electric field at the 30 cm mark?

  A 5.0-mC charge is placrncnxwb* a 3c9f):e6t ed at the 0 cm mark of a meter stick and a -4.0 mC charge is6c9r*cf3t x wnn) b:ea 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 mC and -7.0 mC are placed at x = 0 and x = 0.20 mjlhm k09fp 07-n m4adyrd(lq,. What is thef,7dmq(da hy0 k49rl0m-nplj magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0jkrv:7 )ks9,0 reswyz .50 m. The last corner is occupied by a -3.0 mjr97r0wk )zeksy :,vsC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the wqp 8 gwowga34q;p80s corners of the square as follows: +4.0 mC at (0, 0)g;sopq g8 qpw3w8aw04; +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?

  A force of 10 N acts on a charge of 5.0 mC when it xh.(xaw,1s rb; k-ejjis placed in a uniform electric field. What is the ma -bewjh1srk,;x( j x.agnitude of this electric field?

  A particle with a charge of 4.0 /: bl90e3vqstt; ar5h h;tjqnmC 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 0.120pjnb /hkm9v8 jvm md4/sd) :;/;jmhh q g is placed in an electric field of 6000 N/C pointing downward. What charg;bp)q / vmd8 vhnh9mjmj:;hskj4// mde must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of es oe h*xyk53n-t .-mv-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 t.-yth *-se3 kxen vom5he electric field?

  A metal sphere of radius 10 cm carries a charge of +(ks v7 si,gof* akq+i22.0 mC. What is the magnitug+sf k*vq,k7( asoi2i de of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the e1; qc7lmng t 1b8qp7hjnsbse6 b0q:l)lectric field 6.0 cm from the center h s1qbnmq8gtpl; bn 70)1q :jl67scbe of the sphere?