State the law of conservazp ; v 48)2k.q(xp zuo 8x*s. ddu4biad.vzupmtion of electric charge.

  Is it possible for two negative. r-)blpsz;b3d7:xm .z*oh3dawso sg charges to attract each other?

  Is it possible for a positive and a negative charge to attract each fxf1(tkeb4 aya:e6 ; yother?

  A glass rod is rubbed with a piece of silk. During the process w nc: v9gxru3 foxk5pb 2wd;3mfc8)bp 5pz+y 9the glass rod acquires a positive3)pp3y cod k5xr g8c59:;m9+vf b2xwnufw zpb charge and the silk

  A proton carries a

  The model of the atom shows a9y8 nmt 9bcd/9yue nay1iao1 0

  A neutral atom always hj:yawo a5kfcvch3/y5 xpdm72)0;demas

  An atom has more electrons than j,br6* req 61s2finzsprotons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are;. kjug1hfh5l referrjufhg1.hlk;5 ed to as

  Materials in which t:q/4 m l 7jfads2wy,1eu5thzshe electrons are bound very loosely to the nuclei and can move about freely within the material as/wfu5te4z: j,1aq7 dhs 2 ymlre referred to as

  A negatively charged rod is brought near one end of an uncharged metal byj1 e qwe+lpf-*u3h94w7a d)c 9j- vxz is4nioar. The end - vql4po +es ajd9zie w7*nicuf3xwj h194y) -of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positifr);e 0 h9kdbkt d8sbs0)gi* n(rjt7uwglb:( ve charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B g:;8)) budb0 re( i7 w kf 0l9(bkjgns*trdtshis briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively ch*jt+ hfqrjckuu2(m5 9jh u20sarged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivev,)zlq4l 7ulily charged glass rod. l,lv7 uzq 4li) The electroscope

  An originally neutral electroscope is grounded briefly w* q2h)/ eoditehile a positively charged glass rod is held near it. After the glaqd hoe)t*e/i 2ss rod is removed, the electroscope

  A positive object touches a /sv3pg7l grcmfd26 ,g neutral electroscope, and the leaves separate. Then a negative object is brought near gcfmp36 / s7rld gv,2gthe electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tabv5,ar4ny )zsr le. 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 final charge on eacayvrr zs4, 5n)h ball?

  Charge is

  What are the units of the Coulomb conxr.d:pes2tto(js w 7f ,,l 1zqstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largerk)y5 m,m4 ghir in magnitudeihrgy mk,) 45m than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are;sb49 pqw-y af placed near each other on an insulated table. Which statement byab; w94sp-f qest describes the electrostatic force between them?

  Two charged objects attracup ej ( lxb8i/,q:n-cxd /a0lqt each other with a certain force. If the charges on both objects are doubled with no change in separation, the force betwee:ac nq-0lqxe/xj (pd8i b,lu /n them

  Two charges are separated by a distanqh6lk-,0,asu/j gue wce d and exert mutual attractive forces of F on each other. If the charges are separated by asjku-ew gu ql,a/0 h,6 distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. *e9j-5.qmykw7fuy(oin8d ze 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-fo*m(-yf.wn9 jkzy idq8 e5o7ueurth its original value? The force is now equal to

  An electron and a proton are separated by a distanvfssqj(+ddwt2 o 6+r3 ce of 1.0 m. What happens to the magnitude of the force on the protont (dfs v 6++3sord2wjq if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. rcu2:apf2a4r9 (g twtWhat happens to the magnitude of the force on the first electron if a second electron is placed nextp u4a2(:f trr9 tgc2wa to the proton?

  An electron and a proton are separated by a distance of g/zm)t/r1 iap1.0 m. What happens to the size of the f/ gtmaz1p /r)iorce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is p 2jc- q d+ds2zzr+c7qalaced at the center of a square. When 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 on the positive charge at the square's center. Now, identical charges of -Q are placed at the other three corners of thq 7dsc-zjc2r+z 2qad+e 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 anxu ,( :tu-bceoo-t rdrv*( 3bz 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(or-oe vbu d *ucbtr,-3(xzt: third charge of +Q placed at one of the other vertices?

  Which of the followipgtvf3 ly eqjto4g0 *(,h.hk (ng is not a vector?

  At twice the distance from a point charge, the strength of the electcw7ou o 6omezt; c-ke*9)fb l.ric field

  Is it possible to have a zero electric field value between a negative anariraks,r4 y1 49rs*ed positive charge along irr49ra1s r *y,s eak4the line joining the two charges?

  Is it possible to have a zero electric field value between twpglhs i08p6- to positive charges along th-0pshti 86lgp e line joining the two charges?

  Electric field lines near psitive point chargeu 8l5lh+ b2nwc(gc h)us

  The electric field showna9 vy4+/k ujk-yh.sz e

  Can electric field lines intersect in free spabr.mxjgk8 j,0ce?

  A solid block of metal in electrostatic equilibrium is pla2 *:iwnishcx+ ced in a uniform electric field. Give a statement conx*+i2w n:chs icerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameter/i)wvm ,66xr llrbh1u3pb,t41w k iars are each given the same charge, a6wm, kv, ubh )tp/ wi1rri3blx14rl 6the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where aj 5vh7rha, njk:p:h8 o uniform electric field is directed straighhr58n j:vh hjop ak:7,t upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostjgoz:2*4nqj6tcv oz7 atic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere toloi1 sc-d)4+fxra 0hhat is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere fro +1-a l)hx4os0dichas

State three properties of conductorfm8;hw je )j5,rl2km ls in static equilibrium.

State Gauss's law.

  The charge carried by one electa 5 0s83vgvh(oxro5sd ron 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 nt dz*.*wn34j)axxbqf et charge of +2.00 mC. How many more protons than electrons does this piece of pl 4q*zwx* x. j)fbdn3taastic have?

  What is the charge on 2hpr*8,t( q4 kxdr5oqjw z m+pck/-so 1 kg of protons?

  An atomic nucleus has a charge oupqeq q72p -av *7,wgkf $+40e$. 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 +g4,rh+ f vrrr66hu mj2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between them+6 vgf+rhrm,rhr4j 6u?

  A 1.0-C charge is 15 m from a second charge, and thmki-k 0 :wwlq0e force between them is 1.0 N. What is the magnitude of the second c0w : w-kqim0lkharge?

  Two 1.0-C charges have a force between them of 1.0 N. *juj40ou xm2 oHow far apart are they?

  The force between a a6e-eve16 xeb$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiallys(.7tsy-o 0nlzh ph:f 2.0 cm apart, experience a 1.0-N force. If they are (poslhyn ft0-sz h.7:moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-abaul1,) tqa :id4 0qqixis. 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 electrosta tqi d,)iaa1b :0u4qqltic force which acts on the charge at the origin?

  Three point charges are placed on the x-axibd(1o8 fj0/-uk kt wegs. 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 charge at the origkb e(-80/ dwk1jt gofuin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at d1 + wygb;uf5nx = 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 nf;gw5+dbyu1 the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point bx79z 9 a 1;ldocgzuu-charge of -Q is placed at the upper-left cor9lb- g 9uzoxd7;za1uc ner. 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 = -1.0 nC is at (0, 0.10 g c09y-k3e1nedm jp6 9og;jixm); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chap dgec3-ok9 9j6mx;g ynj0 1ierge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m);rrc:f l41vv s8 Q3 = 5.0 nC is at (0, 0). Whatv 14f:s 8rclrv is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC arerz ji);d*ppt6 (joid+mxc7ght -,g8v q6i; iz placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrost8 pv7-x o,z h)ii;tj jpg+ 6;gdc qr(m6*tidziatic 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 g-ygqgwra d8cr:xoao0to9z86u*x ; /point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would z a9 ga8txco qwr86o/;y ou:*0-rgxgd be zero?

  A +3.0-C charge is at the origin and a +9.0-C chargc3af35 dr. rsbe is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net forcs533abrf rd. ce on it is zero?

  Charge +2q is placed at the origin and chkz9)jhtw o/(ah)sqan9 3 - zmbarge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the fzh/) jtksza)oa 3(nq b -9mw9horce on it is zero?

  A copper penny has a mass of 3.0 g. ar k+mx:*ur+y 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 attractio /4ogc2)ghz3 5 smf ulm0lj kea:y+ar4n of a fixed proton some distance above it. How far above the electron is m)or a04 /5:gsfj +4mlluehkc3yaz2gthe proton?

  Two 0.20-g metal spheres are hung from a commo7k8mo,kku,vs(n - nc ln point by nonconducting threads which are 30 cm long. Bot,nuc7vonmk 8( kk,- lsh are given 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 ch5h9()r ha7mnkilhbp :arge of +40e. What is the magnitude of the electric field at(nk9 b7:r )h lm5iaphh a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of th b.mnz7dvbxk: .m62t ge electric field at a distance of 1.50 m from a 50.0-2.vzgd nb7 m kmt:6.bxnC charge?

  A 5.0-C charge is 10 m from a small test charg mi wkmb1e4+xial* 3ja o*p9:ve. What is the magnitude of the electric fiewkm l1 4xep:ibiva * *j3om+9ald at the location of the test charge?

  A 5.0-C charge is 10 m from a small test c; ms,t 3 c.g-e.lowwurharge. What is the direction of the electric fo c3rtl- guw;ews, m..ield?

  A 5.0-C charge is 10 m from a small test charge. What is the m 8g,;jvyu-eo8e/slb magnitude of the force experienced by a me; - oly sev8,jb/g8u1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are tx/ynf. y 06ym6, flxgseparated by a distance of 4.0 m. What is theyft6nml./ f6gx y0y x, electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a unro77ayk st3 p-1:sb meter stick and a -4.0 mC charge is placed at the 50 cm kb: 3ruosp7tn-7 as1ymark. 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 sma*bzty+56f2+ -nhpa k ogu-f f-d8 hltick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two ch 2mfa+6tufln8k g-zpa+hdfb*h -o-5y arges 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 esri d-f1vh37m. What is the magnitude of vi1-ds7rh3fe the electric field at the point midway between them?

  Three 3.0 mC charges ar udfi,7)pb/k se at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charg i,k 7s)fp/dube. 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 (gtme kg,d2 +ithe corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC atm2,(+eg dtikg (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 is placed in a uniform ev5 tbmyw qkf*ok 5b*;9lectric field. What is the magnitude of this elec5b*qw kbtk;f9 *yv mo5tric field?

  A particle with a charge of 4.0 mC npr3s k3qh oh8vy6 (q/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 u ,cj , qhks vrpg)na+/,hg(w-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 swpa g( u hhkj/gn ,-rs,)cq,+vuspended?

  A foam ball of mass 0.150 gxu3 nsa rjod3sl ;w/x9 (:;tyv;)6rw 4ryyjxl carries a charge of -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 direct/v9r w6d;l:)nr;yu 3lsw xoa t3(4x yjxjr y;sion of the electric field?

  A metal sphere of radius 10 cm carries a che656k- :ho t bz(d.xhfzfx5 2i ihxz;carge of +2.0 mC. What is the magnitude of the electric field 5.0 cm fromhi.z ezxk oixtdhzxb c-6h2f5(;f: 65 the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What -ns l/zvm2d2 +ed-qwu /e/ddl is the electric fie+equsl-2-v d/dd2/ l dmenw/zld 6.0 cm from the center of the sphere?