State the law of conse 9x5vr njte4ta0pbm::rvation of electric charge.

  Is it possible for two negative charg g-v0iid gk3x(++puljj63zh v es to attract each other?

  Is it possible for a positive and a negative charge to attrac* px,qe 7zsob+t each other?

  A glass rod is rubbed with a piece of silk. During b7:h kx2gdrv r1asn/d/2umng;a87 ah the process the glass rod acquires a positive cknngudad:ra bg7r22;7vm1 x8s ah h// harge and the silk

  A proton carries a

  The model of the atom shqb63 6 fp u0kq9ccg4zkows a

  A neutral atom always :f9r8tsm, gy9cm qk/y jqhgz67l 8s) shas

  An atom has more electronu52aphbv*e c ,s than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei ar*xq rj:xilpxz8t8d4 2e referred to aj2 x88dpq*z4rlt:x x is

  Materials in which the electrons are bound very loosely to the nuclei anijm y:22ewns-3 f9vo fxce3j, d can move about freely within the material are referreyo9sx,2:wem3n - fvfj3e2cij d to as

  A negatively charged rod is brought neeuahx tt* 8*4aar one end of an uncharged metal bar. The end of the*axt hua8*t 4e metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and aw;08szz qkh luc(1/j ynba:8sphere B is neutral. They are placed near each other on an insulated table. Sl zh z;:j( 1nybasauc k/8wq80phere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elect 5( clwdhzhl7(ke x8a9roscope positively?

  An originally neutral electroscope is briefly touched with a positively chargednb hqh9 5as 2,1kpqi/p glass rod. The electroscop5qpk/bn qp 9,iahh2s1 e

  An originally neutral electroscope i z.q 32j( r1zba*zmd+lox 6p./qd lxhks grounded briefly while a positively charged glass rod is held near it. After the gl/ dd.* .q6h31z bz xaq+xkjl2ol(zprm ass rod is removed, the electroscope

  A positive object touches ,w4 y0oc rgg2ga neutral electroscope, and the leaves separate. Then a or2ygg0,c4gw negative object is brought 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 neutrar9-q. p8wjwgu l 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 th.wwr9ugj8- pqe 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 Coulomr 3gn 0du i)*lg8vmnp5o8yo+ mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. 86of8sx xz li5)o;ywdThe first charge is larger in magnitude than the second ch oox 8dsfi5)w6y;lx z8arge.

  Sphere A carries a net 4ubn.m5g ul.**kglaj9ws pkz ,-y5 vocharge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes tk9-,ukmln4jw ls 5u*p.5.b ogg zy*vahe electrostatic force between them?

  Two charged objects attract each other with a certaiflu.4h+ s: hh,l-a6jvg ldd/ rn force. If the charges on both objects are doubled with no change in separation, the fll:,-lfv d4 rjgus/dha h+ h6.orce between them

  Two charges are separatek+a/1y a :4l2e+sub;yl boxbgd by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual fob1 / bk+ll4bus y2g:e;a+y axorces?

  Two charged objects attra env7xh0 s jusv.e9x40ct each other with a force F. What happens to the force 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 original value? The force is now equn.x4vjs 0evueh9s 0x 7al to

  An electron and a proton are v0c dsi9308bpz(yumx:w6.k.twimop separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a s3o00 zm .ck wwbi( sx6tu.mdvi:8ypp9econd electron is placed next to the first electron?

  An electron and a proton are separo;//;wxiun nn ated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electru/nnxi on;w ;/on is placed next to the proton?

  An electron and a protonkb*p)opx,ak63bg8fy k90x3y 6b bypn are separated by 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 close9bp3kgpkpno x8 ykf06ab),* 3x y byb6r to the proton?

  A point charge of +Q is placed at the center of a square. When a second point eqr+s;8xv be ,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 th+se; ,rqvbx8e e 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 ie,-ypr vpa :bb*/flu(s placed at the centroid of an equilateral triangle. When rbpe*( a:y /pb,- flvua 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?

  Which of the followingl8.yi.bv qv ;uae18/rqty 4b r is not a vector?

  At twice the distance from a point charge, the streng- qhyau;swm 4fr x8r yt+b1g)80 6zjslth of the electric field

  Is it possible to ha(zwes -xhe.inu ))oi6ve a zero electric field value between a negative and positive charge along the line joining the two charg - zwo .s(6ue)x)heiines?

  Is it possible to have a ze1rv)o uvjg g q0pd8o6 nk 9sjl()*z6ykro electric field value between two positive charges al 9 0u86ovdk n6ksp vqj ()1orgg)jz*ylong the line joining the two charges?

  Electric field lines near psitive point3 3:g inaf knkj51(dwh charges

  The electric field sho7x/h mhhh634wpga1 ztwn

  Can electric field lines intersech-l)v *nnmm wkdcfv-rno t dg)v133r:n82 n7 ct in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniformt uvl)7v.t,l(*emyfl3x0 w ee electric field. Give a statement concerning they3lxlw lvf. v ,0*t(7 tm)ueee electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphemgx,v m, -5p;bh9/ptj zmyj0 tre of equal diameters are each given the same charge, mybpjzt9x; jt-vhmm,g 5/ p,0the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region f .*fnt*oeyv.q*jwd9 1 u r8mmwhere a uniform electric field is directed straight upward. What can be said concerning the cfqw1f .*om9dvjm.t*e* ryu 8nharge on the block's top surface?

  If a conductor is in electrostazb31 xw r5r/fttic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grounded e0 m+(zz*pwxw. As compared to the case without the hollow sphere, the el*we+ z x(0pmzwectric field at a point directly above the hollow sphere has

State three properties of conductors in static equiae)ot,a)y * lhlibrium.

State Gauss's law.

  The charge carried by one elex6qfjcz ,;)h.kv 7 k)rqp kh/,:li pbdww-3ynctron 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 ha ue 9bs zeb(mval)+4+bs a net charge of +2.00 mC. How many more protons than elea)s+( e 4vebu9l bb+zmctrons does this piece of plastic have?

  What is the charge o**ux2 zd2jktdwfr- iv5gv:* q5h4 vrvn 1 kg of protons?

  An atomic nucleus ha.0;2cch 89hw j kv(huyh2t ekms 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, have charge values of 2.p4 piyqop9t0l tb6s :10 and -4.0 mC, respectively. What is the magnitude of the electric force between th t6yo19:tbl0 pi4q ppsem?

  A 1.0-C charge is 15 m from a second charge, and the force between them il92 4lmgi wixnc4i:5xh c-m 0xs 1.0 N. Whatlg:l2 05x4m 9hm cw iiix-cn4x is the magnitude of the second charge?

  Two 1.0-C charges have a force betweu8f*j.zr n hldbq5g;qg;;e g ,en them of 1.0 N. How far apart are they?

  The force between a lhtf/tm:nx 5nj ot36;k4f 3vt $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initialqq ht6n zd+5swdody0n+1dvju3a / 5g4ly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between them?4ugd y/od++t 0sa3dnhzv jwqdq55 6n1

  Three identical point cnxuq g3n9ziy/jk(j6 - harges 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 electrostatic force w/xk u93ijnj6g -z(y nqhich acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2 m o4)rnz7gm hm/ac(2f.0 mC is placed at thmmzm hcan r7)o/(42fge 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 force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.0af3 mgp/qd0c9 0 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 3m cd9pgf0qa/ the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a seciodc5d pg.5)c+ ra;wuond point charge of -Q is placed at the upper-le.do+r) wci;5a dgpc5uft 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 1cxq +n4se hys6(u:rm= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, xs6yh er4(msnuq1 : c+0). 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, 0.10 m); Q3 = 5.0 nC is ate+c qnwk)l+i(:4 yf90 u vaggc (0, 0). What is the direction of the net force on the 5.gci(9g+ 0vfwneql+a)yk: u c40 nC charge?

  Three identical charges of 3.0vn:djbiv +p r4f ,3k+*dtft9r mC are placed at the vertices of an equilateral triangle which mea, * 94b+pddjtv+rk3nv: tiffr sures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges osze+y 7h+efp f3al j7;f +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 charge of -Q such that the electrostatic force as ;p+y3f e alzf+e77jhcting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0oqt/9rut* n1b m. Where on the x-axis can a third chargeon9qrtub/t 1 * be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where can6 f p7z+y6i0hew uxuv28ni n9k a third positive charge +q be placed so that the force o+nvpe9u6hyxkf7 w i z862n i0un it is zero?

  A copper penny has a ilx tn/6 6c 3n 0*,ra4b:.fhzsxwjy bimass 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 a f8dcaib2 y2z*p3c dt9u3 /okmoixed proton some distance above it. How far above t/b*tz u pd93o8ko2a icyc 2md3he electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threaezdvx1 5 +t0 +a-zlmqzbm9f 2wds which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads is +z1zmla0qm5 2bvz t+x 9-w fde$20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of the elehj;.myqj0 v8b42raywnp22 zl6 lan6 cctric field at a distance of 1.0 m frommaa.n4jz2 y;y wpj6nc8q2l62hlr0b v the nucleus?

  What are the magnitude and direction of the electric field at a distance o blmj,:;v jv6ff 1.50 m from a 50.0-nC c v;6vbfj, lm:jharge?

  A 5.0-C charge is 10 m from a small test charge. What is tpitq,86)d7u dq xg k.the magnitude of the electric field at the location of the test chargp,8dtkq i6q. ) gu7xdte?

  A 5.0-C charge is 10 m from a small test charge. What is the direzq3h0gl4z h *zj ubb.j( *x:cxction of the electri qjh xczu.b*zgh(*40b 3jlzx:c field?

  A 5.0-C charge is 10 m from a small test charge. What is;xn3 .n7rbqez1x.;k z9dososp , )d(hztex7 m the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test char .dxe; t7x9s;m pn1)znxszk bo z(ho7,erq.d 3ge?

  Two point charges each have a value o;md,9jc oqt1fr*-h wxhu/a 2ff 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between tu cxw -moaq1hfrdj/,* tf ;h92he two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -0 8yjrq:)jtlr-r.b l5chvkd44e.v*,wbm ll g4.0 mC charge is placed at the 50 cm mark. What is the elm l)y85.,g4 rk.e 4cldlr:wv qj jrvb0*bht-lectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC c:;3;ysutul vnharge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?sy n3 ;l:;uvut

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0evdf0k .e,g )b2ci/as+ncxrof.cd;..20 m. What is the magnitude of the electric field at the point midway betasx cr/n)ke o2. 0+eddff; .gi.bc ,cvween them?

  Three 3.0 mC charges are at the three hvc ,;a 2l zdh)cln(i+ht7dk8 corners of a square of side 0.50 m. The last corner is occupid chl+;)takhlnd82c (ih7zv, ed by a -3.0 mC 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 corn+b f.c+rnnf6s8v+vc bers 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 magnitudec6rf+vc++. bv8nnf bs of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC whn66ai rz8rj) e 6ev31ci 06xk5fxrxcden it is placed in a uniform electric field. What is the magnitude of thivr6xnre66 1ifia06x edj) 3cz5 kxcr8s electric field?

  A particle with a charge o i l;pwn49u,yolpi t kw:xi12-f 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 of 600:mn 1,4vwerun0 N/C pointing downward. Wh:m wnu41n vre,at charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2s3lqvei ikg :e 56c1+z.00 nC. The ball is placed inside a uniform electric fieklv c:zegqs 6eii5+1 3ld, 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 car) utx 64rr:fbyries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's sufy t ru4r6:b)xrface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is+ 6s2mfi69w xhypusv0:s qn0t the electric field 6.0 cm from the center of the sphe+mqv6twi0 06y:xn fp9 2ssuhsre?