State the law of conservation of eltq,n l r*h31v0-xzood ectric charge.

  Is it possible for two negative charges to a ,j,pd xu-aeo*ttract each other?

  Is it possible for a positive and a negative nva9ax7mz /ia3 kx 7s+o95 sjhcharge to attract each other?

  A glass rod is rubbed with a piece of silk. During the procesce fo; p5)su8qs the glass rod acquires a positive cha f8 )seqcpou5;rge and the silk

  A proton carries a

  The model of the atom showre y(w9 tj(ew9s a

  A neutral atom always h+f,r9l*at v nqas

  An atom has more electrons than protons. Thq-tkdfr *ao; vew*1p4 e atom is

  Materials in which the electronsujg r34w fl7+o are bound very tightly to the nuclei are referred to as uwgloj 34+f7r

  Materials in which the electrons are bv*g,m.basn k( b)avs +ound very loosely to the nuclei and can move about freesbaans( , ).*kmv+ bvgly within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal d3m,yo0nwfc9 hytbs 7 9 u.+g*n0dpez bar. The een *7zf,dby9mo. g d09w cstu3ynh+p0nd of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutra3pw:2t aisy0z l. They are placed nezy:p2 siw30 atar each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope2h ab:7pg ud9g positively?

  An originally neutral electroscope is briefly touched with a pos.h7zbr sokv1- op: li4itively charged glass .o1ro:7lp hs4kzbiv-rod. The electroscope

  An originally neutral electroscope 7 xgvp1zcc1 ux.qu mvth-svi.:87 t5j is grounded briefly while a positively charged glass rod is held v.t.:i7hv7uj-1 xu pgcx5vsqt1z m 8c near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral el vubn 0,o)8jluy8uncv(7q 3 wdectroscope, and the leaves separate. Then a negative object is brought near tdlouc8q8nuv b7 ()0nuvy 3wj,he electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placedp ote5yay()q/ on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball roly p)/(yqe o5tals 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 each ball?

  Charge is

  What are the units of the Coulomb c p:1 d)ih1m:lsnpu9orb9 lut ;onstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargezhe5/ 3;nswrg is larger in magnitude than the seconzrh3g;5w es/n d charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed no 1ox4i2oc /kmp2 qz,sear each other on an insulated table. Which statement best describes the electrostatic force betweeniqcxos,4ok2zm 2op/1 them?

  Two charged objects attract each other with a certain forcd 6*epe(jnrp v.-cg8ee. If the charges on both objects are doubled with no change in separation, the force between rvcj-(* eg pn86e .depthem

  Two charges are sepa t6st(xjgj /4,* wrxz fwx.p1srated 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 mwps6j.xzwjgr x 1txfs, /(*t4utual forces?

  Two charged objects attract each other with a force F. What hauj(xe.b 5+5i:o nc*bnc,zo go ppens to the force between them if ogx ci,jco+:un z.onoe55b b* (ne 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 equal to

  An electron and a proton are separa4 )fo au/nwlg6ted by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the fg6aw)of 4/un lirst electron?

  An electron and a proton are sepac( l zc af ;15j;,uiukpogio.3rated by a distance of 1.0 m. What happens to the magnitude of the force on the fir(i .zoc,;u pj3;kcou lf1i5ga st electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a dist;;xc2z sdxke6 lq. n-xfdr,0c 6yxal,ance of 1.0 m. What happens to the sizeak,6l;;qf.c xzc6x-enx d0x l yd ,s2r of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the c.j,djo.* ; yi dipup0wl7bui4 enter 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 the square. What is the magnitude of the net electrostatic forceiwo*7d .i4bju;uij,yl . p0 dp acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the ceul80c(cy ssora:y s+oy 7( pe;ntroid 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 of +Q placed at one of the other vertices? ( c8ys7;o +oeyus:rcl0y(aps

  Which of the following is not a v o6)s 2q))oywuolpov m5gnof76u8p:fector?

  At twice the distance from a point charge, 38qamd.1b t +*7g wpm*jzyxpythe strength of the electric field

  Is it possible to have a zero elrnv5vg0k ;z5l ectric field value between a negative and positive charge along the line joining the t rk50vn5 z;lgvwo charges?

  Is it possible to have a zerbcmp857g ,vvbny 9o o,o electric field value between two positive charges along the line joivmo8v, b7 p,bgy9on c5ning the two charges?

  Electric field lines neaq8, n srocy:(d*,uuuqr psitive point charges

  The electric field shvd rep0 1 0pyzp3yty/*own

  Can electric field lines intersect in frek:ao7 aalxxoh-8-xd 7e space?

  A solid block of metal in electrostatic equilibri 9m(tj;p 5x:mz jx11qstew(aaum is placed in a uniform electric field. Give a statement concerning the ele: sa (1w5tj9 t jaqm(zx1xpem;ctric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are mwldag6 4orj4; b-j4vshf+jdw)/q :xeach given the same charge, the electric field (E) miwb4qxv-j:6;o / ) flg4rwasm dhjj+4ddway between the center and the surface is

  A cubic block of aluminum rests on ay8qj/jx) sfhjp(6-b m3a k1w w w2h4pg wooden table in a region where a uniform electric field is directed straight upward. Wha /p6a whw18j kx 2-p()hysj3mjqgw4fbt can be said concerning the charge on the block's top surface?

  If a conductor is inv:azh2 pp,l 6y electrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollo7.oia1j: hi )wasxa 2n4fli0h w metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hl h:2ioj0hx)7i.a nsi41w afa ollow sphere has

State three properties of conductors in :5qit.glti0w static equilibrium.

State Gauss's law.

  The charge carried by on2y1fd k redg(9e electron 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 pkm. wb6wj; z(erotons than electrons does this piece of plastic m .( be;kw6zjwhave?

  What is the charge on 1 kg of jm lxgt01*bg/protons?

  An atomic nucleus haxepc 9xorihjq) )( 2/gs 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,7h9lb +vknfi, gy7*z tw wt8h. have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between them lw, k.b yvtwfnhzi+g*7t 98h7?

  A 1.0-C charge is 15 m from a second charge, and thpovu4+sao9 x11ti*w ve force between them is 1.0 N. What is the magnitude of the second charvv1t+wx 9uo os4i1a* pge?

  Two 1.0-C charges have a0.xl xb-rij;c:c r8 wm force between them of 1.0 N. How far apart are they?

  The force between a 0pz)jpew xm/* 9bp +pl$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apaqvv: 5osju8gw(w 9+r addhm 4)rt, experience a 1.0-N force. If they are moved to a new separation ofhwovrv g9 d+am8):w5jqd 4su( 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the6j 5d dt;lz8)hhdmh7+ zc i)xo 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 anjid68 lhx;cz)+d )dhohzm57td 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 mC3q/s bc ycoxl nc0rr/6avn.42r6vjk 5 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 electroyc6 3/njrnoa6rbr l 0s/2q4c v.k5xcv static force which acts on the charge at the origin?

  Three point charges are located a5ljo,/ rnhnmzb9m37 it the following positions: 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 of the force on the 3.00-mC cha bmzonr753m j9/,lhnirge?

  A point charge of +Q is placed at the center of a square, and a second poijk r)yq,+p /91hm nmgxnt 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 magnitud,+h n)qkgmjyx/m1r p9e 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(ol0v03f)lw at+ bki l nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). b03tvwfa +)(lki ll0o 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 knhj04 1 i.drj9y2krd (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What ir1.ryiknjjd2h0 4d9k s the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3vm s+5rf3ml7dx/e ves+j-ho ; .0 mC are placed at the vertices of an equilateral triangle whichxomhs 53+ -de s/lem+fr ;vj7v 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 ++tngw d npk ;.9u*t6qi4Q, 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 acting on it wop9g ;.ut ktw6q*+ dinnuld be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Wh* 1e n-.yzxrpv8r+pacere on the x-axis can a t zra+xc n.1ve-ryp*8p hird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origgyr */6wjoy 7u, ,t ufy+iogt:in and charge -q is placed at x = 2a. Where can a third positive 7fu*yo6ywt:,gt yo/ ug ,j+ircharge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total ofv0ppi3b x(:;hne yo.y $4.0 \times 10^{12} \; electrons$ 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 attractiq l- hpv:,ix/ton of a fixed proton some distance above it. How far above the electron is the proton?:/ihtpx,lq- v

  Two 0.20-g metal spheres are hung from a com5daj29 w8n sh,i oti.kvp5/fumon point by nonconducting threads which a hk / i8a.u5fiptwn,d 9s5j2vore 30 cm long. Both 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 charge of +40e. What is the ne kia:i :v30 )8jrbx/j+mduomagnitude of the electric field at a distance of 1.0 m njm:kad /u 8rb)+o eix3i0jv: from the nucleus?

  What are the magnitude an;ib tj 8:rtp27uf z3* 4y5ax8qxiibefd direction of the electric field at a distance of 1.50 m from a 50.0-ix4b7fb3 p*ar;:i2tx z t85ey fqu i8jnC charge?

  A 5.0-C charge is 10a3; kd ohx5qz:5* giqe-gb d*o m from a small test charge. What is the magnitude of the electric field at the location of the tesgd5q*bokeodz a q x3*;h5:-gi t charge?

  A 5.0-C charge is 10 m from a small test charge. What is tur l27c st1c8xhe direction of the ele x2csc tru187lctric field?

  A 5.0-C charge is 10 m from a sm tf-gk*c:;br nall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chart -cbrk g*;f:nge?

  Two point charges each zu aoq;lo(oazw , 2y(8have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two ayao w((o2;q ou,zlz8charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick andax 1wx9t 3m0n /;maa:si i+qlv a -4.0 mC charge is placed at the 50 cm mark. What is the el/l13vm9xx aq a; ian:wmis0t+ ectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark lflojzf gk7 l5/ v3 ;,arfzy9.of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line j 9fz gfro7fyz vll,ka./5;j3 loining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 anjc(( 5 0 stxd i+r-gyzlxvp9a*d x = 0.20 m. What is the magnitude of the electric field at the poinisvy9-c(g* dt( jp lx+ra05xz t midway between them?

  Three 3.0 mC charges are at thehubea35 -y sz/ three corners of a square of side 0.50 m. The last corner is occupied by a -3.y 3 uhea5zbs-/0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m o)766 3gqjvhkxl3i5 vmvju z m5n a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0vv6xmg 55h j3u3 7jiq)k6 mzvl 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 pla-w220)i0z n nxgz6 n.lise / kjluy;ggced in a uniform electric field. What is iz/l g0gey;-lsg nizj60u n) .2nx2wk the magnitude of this electric field?

  A particle with a ch+2jntk 2omxm2o35wyn) dbmr0arge of 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*1p juywzt v54 is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ballzw45j*yp1tuv for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC.mv:,tv7w,om k The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What t:ov,km7m ,vware the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries ao iwrae)vjec (ped9 y9tg 4;k9h2na*+ charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from theia dkthy)9j9e*2 ea+v4 p9;wo c r(gen sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What iv p00:jap:x h:jfci+:ko,) rb/s ejqbs the electric field 6.0 cm:j,0:pc+o ) bkhrx b: :0pjfqiajv e/s from the center of the sphere?