State the law of conservamv8.0am.9n 3 vz-ee rv;ncwswtion of electric charge.

  Is it possible for two negs.dh m5w*wqb /ative charges to attract each other?

  Is it possible for a positive and a negative charge to attract et 1wxm y8q*:9 kc+flohach other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod av9e+uek c7 o tco/kh7(cquires a positive charge ahoo(cktkec+v9 7 7 u/end the silk

  A proton carries a

  The model of the atom shows*. 51 mog+dkppwnhk yb..io7orje c/ 5 a

  A neutral atom alwaysg uo 6+odum/s6 has

  An atom has more electrons th *tu:,eyouw ektsvr z ((g-3.san protons. The atom is

  Materials in which the electrons are bound very tightly to thek cc:r:- p7yeg nuclei are referrc 7pg-ycker: :ed to as

  Materials in which the electrons are bound very loosely to t9: gik8 ehr2mrhe nuclei and can moig9r: h8r2mekve about freely within the material are referred to as

  A negatively charged rod is brought near one end o poybg qn3-6bk)5l6ru f an uncharged metal bar. The end of thgnbuy5)-l k66pq bo3r e metal bar farthest from the charged rod will be charged

  Sphere A carries a net x(bxnii4 p1qqd11m /kpositive charge, and sphere B is neutral. They are placed near each other on an insulated table. Spq/i1q( bx1 x dm1pkin4here B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod char+y 5svabxo4 :oge an electroscope positively?

  An originally neutral electroscope i3gczl7 y)5hvr 4xb i7 i7y/ppis briefly touched with a positively charged glass rod. The electroscopigh34 xv5lc/pz777y)p rybi ie

  An originally neutral electroscope is grounded briefly while a positi ffb+ 21:kfzr; bp/mav 1zbu2vvely charged glass rozfbz bmuv21p kv b;+rff/2:a1d is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate.+g pfz05j 4pik Then a negative object is brought near the electroscope,+ gp5f04zji pk but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutrf d a*64imrexti(xc+4al metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path followed t4i( + id* fxa4remxc6by 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 const jg c9u m +c/3.xpbiy7l+avhpbu2/*viant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Th6n3a(o xrg2np e first charge is larger ig2o pn3x(rn a6n magnitude than the second charge.

  Sphere A carries a net charge1rov8ru voo06s* lk k) and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes ko*6rkvo vl1o)r su08 the electrostatic force between them?

  Two charged objects attract eacf gp- l+k5i.znnl s+r7h other with a certain force. If the charges on both objects+z7npl fl+rg- n5k i.s are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutui 4lk78y mc4chal attractive forces of F on each other. If the charciy4k l7hc4m8 ges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other 0g9v0gnrre1xdr:;anwith 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 rng vrdx ;g0era:9 n10value? The force is now equal to

  An electron and a proton are separated by a distance of 1w gf*g-ewt 37d.0 m. What happens to the magnitude of the force *w3ggde-7fw ton the proton if a second electron is placed next to the first electron?

  An electron and a proton are sep frz:sy 9q*/,)jbw) aqkzmp )narated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron9zjz * f nq/) :sa)m)p,kqrybw 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 hi4 p9g rsmskj. rmb2,(appens to the size of the force on the proton if the electron is moved 0.50 m closer to tisg9k,4rp (ms2m jr.bhe proton?

  A point charge of +Q is placed at the center ofa 91sm,d33ksmeg6ik r a square. When a second point charge of -Q is placed at one of the squag6ksdi3,m 9 mkr1a3esre'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 an equevc4 nr ekr -yk/a91s-ilateral 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. Wh4/yc-1 kn rere9avs-kat 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 i(m)os)1 qu uhjd3.emn s not a vector?

  At twice the distance from a point charge, the strength of the electric fikr (h,vewzsi ,)gg,/noah)p+ hmj 9d: eld

  Is it possible to have a zero electric field value between a iu4fox q ,g wl-2)9byc0ikfy:negative and positive charge along the line joining the two charges?b g )4fyf-9y2wc, i:0uqok lxi

  Is it possible to have a zero;:1uj2py je* vg0prbv electric field value between two positive charges along the lineug 1j vperv* py:bj20; joining the two charges?

  Electric field lines near psitive poinw d*v yjmgfgwwmgz: 4f) d0(5/t charges

  The electric field show:-robu., b*qtyta ud 8z3t9xd7qr +qbn

  Can electric field lines intep dm47aq2f -qw e(ak.lrsect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a*8. xtwulzs88jq 5aq5uyt+ a w uniform electric field. a+j*w858 lxw qqzu8uat5.ty s Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters hb hp w:3pk3/:1uvucj are each given the same charge, the electric field (E) midway between the center and the surfj/pk p 3h3vh u1:b:wcuace is

  A cubic block of aluminum rests on a wooden table in a region where a w)nty jm8:i5m uniform elec8 w)jymn:t im5tric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic vx14 zeecd: 5 amm)2wfequilibrium near an electric charge

  A positive point charge is xe ambwcf):+i o.5md*enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow spfbd o+* )ax.m mec:5wihere, the electric field at a point directly above the hollow sphere has

State three properties of conducyorum 4cb5xr- :1fl c,w/j+81d0d:lue z wrb otors in static equilibrium.

State Gauss's law.

  The charge carried by one electroj24 .rthof o6on 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 manpo ez(xj-l6b7 5 / *rxfjlh4nty more protons than electrons does this piece of plastrjjxz( bl-5h 6ol/*7nx pfe t4ic have?

  What is the charge on 1 kgtd3*nly ) crl.fnzdin0+ ;2o q of protons?

  An atomic nucleus has a charge oem ,e+(w7 .hzjmaf *cf/8xuk gf $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sess6mp,fn9y dw( ;x(n2os5knhparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, res; sp5nmx yhk(w( s,nn6df 2so9pectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the fmi( 0 fpg;p*vshrl2v5orce between them is 1.0 N. What is the magnitude of the second chal *h;f 5vi(mr2g0pv sprge?

  Two 1.0-C charges have a force between them of 1.0 N. How far a vsnt0x8)x bckja8 8e/ usv)u7part are they?

  The force between a k7iqoxg z7l p089l-pb$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experien0rus z08o7lwnce a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force ber0ln w0 o87zustween them?

  Three identical point charges of 2.0 mC are placed on thp- : wkc22gki :2hxewfe x-axis. The first charge is at the origin, the second kgfce ix2wh:22kpw-: 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 plaoub.-z6 ,ptxn k m:d5rced on the x-axis. A charge of +2.0 mC is placed at the 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 c5b: rd,k.n 6ztox-umpharge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x (x* k(kt 87vttypils;;fgl u44v4 jxh= 1.00 m; Q2 = 3.0kufv ;4ltt;j8y7 4g 4pv *tlkhxi(sx(0 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 pt75f3c - on9;uc sv:un,,aendamy9 eylaced 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 ceynnv ,e d3f9nu moscu;ya:5e9-ct,a7nter 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 = -1.0a;(cg.ye7hgy nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charge?ch. ;yage7 yg(

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nh(9l e3 1vz vzjvy9kz0C is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the v (e ljyhz0v3 zk9z91vnet force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are p7hc1a49p+ tudd0rwlq3 ye7 .przig0ulaced at the vertices of an equilateral triangle which measures 3g193y.t0 7e iwuq l p74z+c0rrd duhap0 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, w ,gj odj7+w2kdhich 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+ wog,k ddjj27 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 = xd klm)k,-x 5r4.0 m. Where on the x-axis can a thirlx)r,x d-kmk 5d charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chf5dsi:el a78j arge -q is placed at x = 2a. Where can a third positive charge +q be placed so that thsae7 5jl8 f:ide force on it is zero?

  A copper penny has a mass of 3z4w99(a wglxk.br: 9 m9lbwzj.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 l9m 4i s0kjsl3the attraction of a fixed proton some distance j l043lsi sm9kabove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconj7 t5p3 /xlyrf2 hu;bvducting threads which are 30 cm long. Both are g7l2/yb p;tvufr xh3j5iven 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 cb-st9 oj krly07 :kdd/harge of +40e. What is the magnitude of the electric field at a distdk7tb/ 9 0ko:d ys-jlrance of 1.0 m from the nucleus?

  What are the magnitude and direction ofa:t4+ nq2isquy*/i pn the electric field at a distance of 1.50 mipt *qna y4n+2s/u: qi from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o- m5pnh)4tq wl*(mlj,eho s.uf the electric os,-wj4e* 5hu m(pq. l)lmtnhfield at the location of the test charge?

  A 5.0-C charge is 10 m frdpg, mrb7j9dx48+p d eom a small test charge. What is the direction of the electric fieldd7j4drgpx+e m ,pb 89d?

  A 5.0-C charge is 10 m fr7uf6zw)b k7j com a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of 7w6 )jfbzck7uthe test charge?

  Two point charges eac58 evwbsren ;8j f7+.iwt l;zfh have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midwayfee7jbw ;5 vlr+. ;i s8t8zwnf 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 chae7u+g u2olpn yi7z )n/rge is placed at the 50 cm mark. Whiplzu n 7uy+o7 2ne/)gat 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 and a -4.0 mC c79nn* ;ej7h vov7hrfx.yk 0f-kzob5j harge is placed at the 50 cm mark. At what point on a line joining the two cf5x z7;v0kyn.fnekob7- 9 v7h*hjorjharges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are plach0s +4 kmzp1 2nlv;ytked at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway y+42 lvzspk1kmh0 n;tbetween them?

  Three 3.0 mC charges are at the three corners of aqla oyl* +nv.3-t ;ebq square of side 0.50 m. The last corner is occupltno-qa e ;y3v*bq .+lied 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 thj9z9 vu v-k/yru8tspn: wjn,3e 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 squarewzunsj/v t ,yp39n8 u 9-vjkr:'s center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a aeq bauda1t h)5 :.ntyr26n4huniform electric field. What is the magnitude of this1nu.n a5bry4td q 6hh):te aa2 electric field?

  A particle with a charge of 4.c0/lq 9 nkk(gm0 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 i((z uescw63rj q8vlz *n an electric field of 6000 N/C pointingqcvz *uzerw8l j3( s6( downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC.tx*x jy .u0*kwctu 9+3by l.jc The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and cwu3 . 0*jcyb.9tyjkx*tx+u ldirection of the electric field?

  A metal sphere of radius 10 cm carries a cha g5kkzon,y8,z f09q- tenud r4rge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the dz,noq5f9 kzru, y8g-k4 0ntesphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electril t .sl5v8(kexc field 6.0 cm from the eks 8tx(lv.l5center of the sphere?