State the law of conse q:h0bvt, .yfbrvation of electric charge.

  Is it possible for two negative charges to attrj.7qd.lzuyqzk o4v(; r ef: )yact each other?

  Is it possible for a positive and a negative charure7e b4e-(n r 4vx..t qon+uwge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the8j yold5 rnhzs 578q0a glass rod acquires a positive charge and the0r yhzo5sa88 75qdnlj silk

  A proton carries a

  The model of the atom showxdwpcuim6zv8c t0 u8 ; f*eb9sq12pj2s a

  A neutral atom always haz+lt/9zw bx5tk/jdy9a1 ;ai q s

  An atom has more electrons than pro:s+eac9y zf9q.bpbl9 m)c4jgv . bqp7tons. The atom is

  Materials in which the electrons are bound h 1gmb b7lju;ld 8rl3(very tightly to the nuclei are referred toll8g31b mu( dlr;hj7b as

  Materials in which the electrons63xfrdf 6kgd.ep(s b63tjn +5rxv kp;z3e ; of are bound very loosely to the nuclei and can move abou;6( 3 g;j fn+r5ek3x3zb d6tpepfvfdrk6 sox.t freely within the material are referred to as

  A negatively charged rod is brvp0+ l yqy94uo6(rskx ought near one end of an uncharged metal bar. Theru46l kvspyx +qy(90 o end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and stazp, r,/ +t+.j. pux 7n8sgo fxqezv.phere B is neutral. They are placed near each other on an insulated ttxa+ nzjs8.gqep7z/vu ,,t .+x.ropf able. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electros r*od f2egt/2icope positively?

  An originally neutral electroscope is briefly touched with aw zv0t )0b tkm7 q lx;ww4cd-p20b2f 9.xbaexf positively charged glass rod. The elcbwkw900 e0f7bp2)vxft-l4atwqxb. 2 ;m zxdectroscope

  An originally neutral elecz1 y63c0 ugbt+op7eeytroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electroso 07p y+z bugce31e6ytcope

  A positive object touches a neutral electro8ja4, r;/moxx nct+ou)wx7 z/z) yhmqscope, and the leaves separate. Then a negatia r, x xj 8unoczm)ot;h+m4x zqy)w7//ve object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged odbuz5tk.5 vzn273a6.ofu3c sp;o w zy bject is placed on an insulated table. 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 negativepa.zkzc 3fobu u3v6wz sd5n7o5.;ty 2 object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constantz((cq a1- azmm p (8:sz5+ *:ayxyfc0nyhfwsi $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charg e:4zkxwi2 z/ve is larger in magni2xze4ikv /w: ztude than the second charge.

  Sphere A carries a net charge and p6z:,sj4k x yqqjg 1m0th ;j7zsphere B is neutral. They are placed near each other on an insulated tablj,kp gjhy0zjm74:t s;1qzq x 6e. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charg z0y),msioy).-i n6 tjet7znres on both objects are doubled with no yi)t )njsr. m 7ni ,zetz60o-ychange in separation, the force between them

  Two charges are separated by a distance dr1n hxt+b/3 ub:otpkj:(bq p yqg)74 f and exert mutual attractive forces of F on each other. j /pny :tfpbx:kgh)71b3q4rb tuo+q (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 for x;8ig lxik0b5ce F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation di8 0 li;xkgib5xstance 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 dist;nlmtrs46 ry+o .dta- ance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next t-yta46ldmtr;.rso + n o the first electron?

  An electron and a proton are separhe6;+: n vxghqated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron i :+henq6g;hx vs placed next to the proton?

  An electron and a proton are separated by a d0kl qml5 n,cr07p4.;rlq ye -xjk)vtdistance of 1.0 m. What happens to the size of the force on the proton if the el ,xm)qpdly5tn0kkrq -. ;7rljv0l4c eectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of (6lr;8+4 dal.u qf ypk) a,ty*yfy vska square. When a second point charge of -Q is placed at one of the square's corners, it isdyrkp a;8u.4lk6,fayqvsf(* y t+y)l 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 cuuc0l/38kp vventroid 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 it. What is the magnitude of the force that acts on the centeu8u /v0cvp k3lr charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following i stf k.a9xud16p g07mfs not a vector?

  At twice the distance from a ../ljvnd-so /qh9omy point charge, the strength of the electric field

  Is it possible to have a zero electric field value beersdhb vb o) xx8cxp3))/4o/ wtween a negative and positive charge along the line joining the tw /o) v8odb)rbwspe) xcx h3x/4o charges?

  Is it possible to have a zero electric field value between twow k( ;eveoe/t pebz )7*+z 1gjm.3hxzx positive charges along the line joining the two charges?to ekjzze*e(vh )1 g7./zx;p3e bxwm+

  Electric field lines near psitive point charge)j +r9 akicp 1sg4n1mmlpiv69s

  The electric field sh4 t9 /fdcxw8yqown

  Can electric field linei ,ui xf6;fobww(0 :jqs intersect in free space?

  A solid block of metal in electrostatmb34h 2fn2zhgdmvy70 ic equilibrium is placed in a uniform electric field. Give a statement concv0mbg47n yh2fz 2 3hmderning the electric field in the block's interior.

  If a solid metal sphere and a hono0(r xtwfc cic cb)xqh/(, ( pn*,3e);jqhg ollow metal sphere of equal diameters are each given the sam o*cg(h, jnfh,3b crcco wq)0p(x(tnqex;i/ )e charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tab mi rx.t+3q7kyle in a region where a uniform electric.ktyq +xi 73rm field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chartab. ujztmr93 6h16nege

  A positive point charge is enclosed in a hollow metallic h/ qpxw59pes 6i4fx,fch3v *a sphere that is grounded. As compared to es 5icxvhw 9,/x*q3h fpfa6p4the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in statcrd:ow um7t;; ic equilibrium.

State Gauss's law.

  The charge carried by one elechbz k(v ei,c ozpt+v2iy*o1h58p93f ptron 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 +2.0x1n44nyj2m a o0 mC. How many more protons than electr n21yxam44jon ons does this piece of plastic have?

  What is the charge on 1 kg of p/llta6c)ic ) brotons?

  An atomic nucleus has a charge wfl ;0:hleakvm+aw 4+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+a r, 9boq3yta.0 mC, respectively. What is aob+t , qrya93the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is1m -no-k+j7ai5jd7j yy5mduc 1.0 N. What is the magnitude of the second charge codiumdjy1- a+5m -jyn7j5k7?

  Two 1.0-C charges have a force between them of 1.0 N. Ho m,/,1(jfpktb4ec a oewp8a(sw far apart are they?

  The force between a f3 p(f.+g wf, gab8xrh$30 \; mC$ 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., u 7nw/hvkre-N force. If they are mov7uwkn,er h v/.ed to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charge7aoht46wqc rb2- 3;asc5he cls 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, an5-tr 4wc 63h2;ab hcl7 asqceod 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 pla,k2 a kk4ux/noced 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 anu2kk a/o4kx, nd direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following pob6gvdmf8 ++2jos0y14g tnoh ysitions: 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 o0 jo+26y 1mf+s g4hybnv to8gdf the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second p eeypeho9)5h :oint charge of -Q is placed at the upper-left corner. It is obseo:59eyh )peh erved 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 = 5od5lza(3vs8q zn - ca,.0 nC is at (0, 0). What is the magnitnl5v3, zsz(8adaoc -qude 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, s:+u bhlwe h2n.p: r3x0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC cha3+swrh::x l hp2neb.urge?

  Three identical charges of 3.0 mC are pvrwt vjt ,s d;p42*6qalaced at the vertices of an equilateral triangl4rds ;6 p*wttvj2vq ,ae which measures 30 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, which are separated by 3.0 m. At what pocjt* -jt(gb9)x94an7mf kt cwint, on a line between the two charges, would it be possible to pk xaj9-7tm9j cw(4)b nt *tcfglace 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 i9 1rz mm w *,o2ue yz4q3dg5ob7guy3pns at x = 4.0 m. Where on 173ndm 24oewqobg gy9 m rz,5* uzpuy3the x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -xueoa -3ei7(m q is placed at x = 2a. Where can a third positaex7-i meuo3 (ive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g.o:85ntee .5g hjdqb:u 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 aga4jb*mg6 yhr+taa 98 )tgkz yr2uopg(:inst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron i (oar)ytprg mk h8+ugg a 4*2:9jtzby6s the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threadl/u0vp m0 3klis which are 30 cm long. Both are gipkmvi/0 ll0 3uven 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 +40e. What is the magnitude of the eletub 2g/dtt,g/b :er8bctric field rb / t2b,ttg8/u dbge:at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the elecrcuiii7 2os1-r69ee tnd5d6c tric field at a distance of 1.50 m from a 5or6i dsi-15i9672nd et cru ec0.0-nC charge?

  A 5.0-C charge is 10vk5 8qxkr l/vt*6 2qpz m from a small test charge. What is the magnitude of the electric field at the location of the test charge?t62kq lxq8 p/*r5kvzv

  A 5.0-C charge is 10 m from a small test charge. Whats*hbe of4er/. is the direction of the elebe re*sho./f4ctric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the58hmx) y+m 7bkbrrlj)+)tfjj force experienc 8l)fr)mhj )xt 5bjm+byj7+rk ed by a 1.0 nC charge placed at the location of the test charge?

  Two point charges eac l0-j/89 pn gkp,z)amcde lmz9/ov 4s.eoo -meh have a value of 3.0 C and are separated by a distance of mckle-9 e,-mzlzps )amn/goo p4v /o0.je8 d 94.0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at thel5,o8bq, cyw+:h dd5qhuwf7 fu 9dx0e 0 cm mark of a meter stick and a -4.0 mC charge isd hw9, 5f:yd+,e 0fcqwu7ouqd5hl x8b placed at the 50 cm 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 mek)b o+okc3ykfk,r7kr w ,5r,uter stick and a -4.0 mC charge is placed at the 50 cm mark. At what pkf ow,7ok krc+uk,b)5,y3kr roint 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 an qm0wd*kdi48 5g uaim/d x = 0.20 m. What is the magnitude of the elw0 qdg85*idm 4i/makuectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50h1s/2hh k ug k0:b+kr*1kpajs m. The last corner is occupied by a -3.0 mC charge. Find the electric fields1 k pg:ru1h k/2 ahjksk*bh+0 at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are plve ;st eu)tn06/o xw5iaced 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 squx 6o 0s;vwiut net/5e)are's center?

  A force of 10 N acts on a chargeo h.s5bjnl9;f of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of tlnh5f.; 9ojbshis electric field?

  A particle with a charge of 4.0 mC has a massaavm,3 tuy)iaov: bapo, ;1c1brq9p 2 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 ofggw9b 71t)ti 5-rjcc v 6000 N/C pointing downward. What charge tcwtgc )75ji r-1gb v9must 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. The blzzms7v ,7adq ,/a ;fia 0isx 9hx,2oeall is placed inside a uniform electric field, /zlf sxa0;i z 7avmd i29,7o,eahqxs,and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of rayhe:h- 6cvr/fg ,qcge-bit6 (dius 10 cm carries a charge of +2.0 mC. What is the magnitude of the electrh,rcf bqh6 /e 6ec-gvy :(-gitic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. W e10qnjcywhhc::p9l7xu 2fr .hat is the electric field 2n:lrwcxf :0hc9epyuh.7 1qj 6.0 cm from the center of the sphere?