State the law of conservation of electric chj8x f0la9vtoa82 -on35uj f ivarge.

  Is it possible for two n kiviy,c6.;z0l4bl +9 sbky xfa9f7u qegative charges to attract each other?

  Is it possible for a positive and a negative charge to attract each otn ;f +7 i:h q*r mu:oqcq)yq19nhb2gyhher?

  A glass rod is rubbed with a piece of silk. Durinf3wuornj.0l)(.)uv lir6 vk; vxtu ,u g the process the glass rod acquires a positive charge and the silk)no.6uvjvuuri,l;f x. vw l) 3t(uk r0

  A proton carries a

  The model of the atom showsh.9 j4:g8p2d/xyujdv2 hj)f2giskdv sozx2 7 a

  A neutral atom always ha 8( 6dkkl:c,adtf,7r, 9 w zulupqoum4s

  An atom has more electrons than prot a2pc+ zglmsgq.1dk*1id ys69 ons. The atom is

  Materials in which th jdvj:3a9,dt je electrons are bound very tightly to the nuclei are referred tv:ajd 9 djj,3to as

  Materials in which the electrons are bound very loo9cj l0zh 85fopsely to the nuclei and can move about fre5oj 8l0zfh9 pcely within the material are referred to as

  A negatively charged rod i8 ew6g7t+-b ;poki9 r2fednjus brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod wilngw fe6j9 7ukb 2t;p rie-8od+l be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are p8e a8hld no9i/laced near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. l d8hn9a/i oe8Which statement is correct?

  How can a negatively charged rod chargg1,wt- ia:r zee an electroscope positively?

  An originally neutral electroscope is briefly touched with* d x;qmqmkm7/ a positively charged glass rod. Themxkq m*7q;m/d electroscope

  An originally neutral electroscope is groucud6kuc+c6co s c/(a v1.ei0tnded briefly while a positively charged glass rod is held near it. After t ucc c1c6evkds cu/ +o(ti0a.6he glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leavnv:ffon0k* 3 aes separate. Then a negative on*noff:ak0 3 vbject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an inspsi v+i88stayz l9365rj;jb lulated 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 negative object. What is the fi5ibs6p a+tj8l3jrzs l;v8 yi9 nal charge on each ball?

  Charge is

  What are the units of the Coulomb constw4 mgql7xu+ ;yant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dit,sg jq ytyh5.e 4n36nstance d. The first charge is larger in magnitude th3y e n4g,.tt6jqyhn5san the second charge.

  Sphere A carries a net charge and spnvldbm,wnr;-k/c0ud3(o pa+ g+pk 8rhere B is neutral. They are placed near each other on an insulated tab 3+8dnr- (k ;,glkupc nr0vw/m bdp+aole. Which statement best describes the electrostatic force between them?

  Two charged objects attr p *onorjvm-7:act each other with a certain force. If the charges on both objects are doubled -o vjmorp:n7 *with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive 4g4 pa.b 4 * obdnzki1flq-9tlforces of F on each other. If the charges are separated by a distance of d/3, what areln44-oqtd b941iz.klaf pg b* the new mutual forces?

  Two charged objects attract each other withur4q;u zw4z*ik ,x w0w 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 , rz;ukwqx 0u 4w*wzi4now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens vc/kn fls1 4o8a2mk)p 9-mpjz8 de0qhto the magnitude of the force on the proton if a second electron is placed next to the firstmc4s- qjl a8) p20hf/dnvkp 198kom ze electron?

  An electron and a proton are separated by a distanceeo2ew he4l03z 9apu r) of 1.0 m. What happens to the oe 29e 0erzwh)3u4 lpamagnitude 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 distance of 1.0 m. What happowd+:l2rs/gwb qf(g:ens to the size of the force on the proton if the electron is moved 0.50 m closer to the p+:wdgfsqb(: rl 2gw/oroton?

  A point charge of +Q is placed at the center of a square. Whenl +9soti4dl/.u1 o(ovex1o zf 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 vdo4u1xo zl+lt(o.9 o 1i e/fson 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 v.omo d7o u5ea* ej06l7cme iw/ic a5*at the 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 it. What is the magnitude of the force that acts on the center charge due to a third charge dc vie.o oa7wmm5/5i7o j6*la*euce0 of +Q placed at one of the other vertices?

  Which of the following is not a vectr)5* qng*d:-gmanixxor?

  At twice the distance from a point charge, thbu+b gtqmu6,v;ywm/or-uiu7 16ui7qe strength of the electric field

  Is it possible to have a zero electric field value between ayjh*ax cktj*4l5zsv1 m6. v rx,zfb+0 negative and positive charge al*f jjbzxkz1 l4vv sm6.5+yhxt, cr*a0 ong the line joining the two charges?

  Is it possible to have a zero electric field value between6, cap*efacd; )b8bnn two positive charges along bb n;ed a cp)*n,fca68the line joining the two charges?

  Electric field lines near psitive point chk8 +nji2 f9uwkarges

  The electric field sh8bp9 y k2hb-rdo )xdo6own

  Can electric field lineswejm hc y94quhi8(w *i qgda.3):kt/ t intersect in free space?

  A solid block of metal in electrostatic equilibrium is plaw3r( h .p :caznw(ykb-xf(kv0ced in a uniform electric field. Give a statement concerning the electric fi z( fcxw.0n:aprk 3( v-w(hykbeld in the block's interior.

  If a solid metal sphere and a hollow meoqnz +1zp*bjovd*;c;0c; a cmhws3u ;4sk1qmtal sphere of equal diameters are each given the same ;s k;mopvccndh3 ;zaw1uoc bj;0s+m *q4z1 q*charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region woz 7w61zui 3 mt hckmczo uya+8;z1ga;1g7vw,here a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfgmoa81cyzizgk ;36u tuw 1,+wmhzz7a o;1vc 7ace?

  If a conductor is in electrostat*z bwhe oy)iuivsqwi893pt2(cz6 f1 3ic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphelynb7k;l y -c0h7gkf5 re that is grounded. As cok7fn0l;k b5y7lch -y gmpared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibp7pa -eutd4tz0 3u0zvrium.

State Gauss's law.

  The charge carried by one eeykgr vc bffu./6 wj9fn /7(b2lectron 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.s 9oxx zs63efg ,/ycd than electrons doe/y,sofx6.g sc d 9zx3es this piece of plastic have?

  What is the charge on 1 kg of protok(7jq+dsij9by s xwy,n z64c1ns?

  An atomic nucleus has a charaf * fq7x,oauxzd7 0 t985lipy/ jlq3yge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated bys e.l/az8 sqp89)w afc 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the/ wcsp8a zels)af98.q electric force between them?

  A 1.0-C charge is 15 m fr h+ 7zii9pv2u6e(ezw 5sos,k iom a second charge, and the force between them is 1.0 N. What is the o 6 zi 25p,s79 (wek+iheisuzvmagnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.07i7zw k ea)n3z N. How far apart are they?

  The force between a q *;5zz2mqdsh bxk)7x$30 \; mC$ 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-N force. Ifmea 95 *nucl:ozp rhx)) f7:tm they are moved to a new separation of 8.0 cm, wha me:htr*f ux )p5o9cmz7:a nl)t is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chw 2iky3xo5kldt6+ 9p barge is at the origin, the second 6pbw9l+oidxyt 523k kto 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 p/5 0v5yxf 1eik4uibx ilaced 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 charge at the origin? 5 i0x5iki1vu/x4f bey

  Three point charges are located at the following positions: ;n eozfss) 69sQ1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = )s6noe z; ss9f-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 centert c0 nxcpu-t84f4e6lz of a square, and a second point charge of -Q is placed at the upper-left corner. It is 4 e4tnx0cu 86c zl-ptfobserved 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 5/u buq vzgv17nC is at (0, 0). What is the magnit/uvgu v bzq157ude 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 atv/)qqh adoj.m -)+gcy (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction ofo dhg.q))jym/qvca+ - the net force on the 5.0 nC charge?

  Three identical charges+c-kjt: qfj4d of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one-c:kjfdq tj4+ of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At w8noi9 .(3 tu owkk2rbhhat point, on a line between the two charges, would it be possible k khiowtr.nu82o b(93 to place 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 = ,ey*h fici0 h.4.0 m. Where on the x-axis can a third hi,i0c.yfh *echarge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x )fgpi7mzrqsi 4d52 dtn,z6r9= 2a. Where can a third positive charge +q be pla szp2 ,r6 zdm5q rdt7i4g)i9nfced so that the force on it is zero?

  A copper penny has a mass of r2w5 zx0hj4lxo-u2dz 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 ofg.v:rfpl,p ed5 6gx32mh9 dzl a fixed proton sx6zgl53pd p. lmg2d:ehrv 9 f,ome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common puxq9gug4o0 eg7 - ftg2oint by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until te7g40oxugug2fqgt9 -he 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 electric )w-wo+xfdizpo iy .- +field at a distance of 1.0 )ioo. -d py+-zifww x+m from the nucleus?

  What are the magnitude and direction of the electrivkwzo-9;i;7 h(.wh n inlvj6u c field at a distance of 1.50 m from a 50.0-nC chahv6;un z 7ijnhvio.kw(-; wl9rge?

  A 5.0-C charge is 10 m fr9fw b,l 8sr0w xqn9t-3obylg4om a small test charge. What is the magnitude of the electric field at the 3b ,x9-nl9 f 0wbytglro8w4q slocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the ekje ;)f;+ nliwlectric fwjin fl+);ke ;ield?

  A 5.0-C charge is 102c +.g:s :pns n+eabja m from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge pc:gjsn+ap b .: +n2esalaced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by asl 5:wo38l qi u(jz3ib,yxs3x distance of 4.0 m. What is the electric field at a pyxizs3i3(:l qx35 w s ub,8oljoint midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark)-+gk (kh0mx:cx+:oure/mx kmokq 8 k of a meter stick and a -4.0 mC charge is placed u)+xk+m cqm-ko0 k ro (x8k:xg:hm/ek 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 meter stick eg8mac f/ 4agp9 *2/eg/mi krqand a -4.0 mC charge is placed at the 50 cm mark. At what pointeami2gg4 *///cg q 9pk8mefra on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC 3a1r- ohzbor,6xo 2 grare placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point mido-o6hrrr2 obax1, 3gzway between them?

  Three 3.0 mC charges are at the three corners of a square of si9x(lhdt/1w fslry 4j4 de 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at14(jsl y rfhxt/9w4ld the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corne /oyj;hu 1fnf9i88k zfw/ur+crs of the square as follows: zh;+u in1of/8u9 r /yf8kcfj w+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?

  A force of 10 N acts on a charge of 5.0 mC whkp7lq5pu1 2coen it is placed in a uniform electric field. What p q1pk5locu2 7is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has jt/gs2uxc2 0tn wot,2 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 caus76v.bg5 o 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspev 6bu75cs.aognded?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed cdbp7wg0p yt1 )nqk/- .up w-uxh -z6h1jn+yzinside a uniform electric field, and is suspendeh+/w--jyw1d1 up0 n7kn6)g z- q.y pztp bucxhd against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radiua:1z m*g .*, b.p,nfoavdebids 10 cm carries a charge of +2.0 mC. What is the magnitude of th*,.*i,bmb ddf.v:a1e op nzage 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 elec*t qrt vcg)ojhbz5f4 ((,0u1)q6( ewcvnhtg utric f (rq)egc56tgt(u4w )0uoqzn*h vf,jh1 b(ctvield 6.0 cm from the center of the sphere?