State the law of conservation of e64lr hk9 f*drflectric charge.

  Is it possible for two negative charges to attract each oteybh bbf8b,4oybrc7q*: j-fe7b: 9h bher?

  Is it possible for a positive and a negative charge to 4+ffzw pnh37l:g2d.l w1dbe;+ u gee i .llk)gattract each other?

  A glass rod is rubbed with a piece of silk. During z4 lmw05cgm:uthe process the glass rod acquires a positive chuw4 :0 mgz5lmcarge and the silk

  A proton carries a

  The model of the atom sh*lywvbo4) c.0qn qx/lows a

  A neutral atom alway7cerc)f:b t hhh,jyu/7 8yif7.o csq) s has

  An atom has more electrons than protondmn ;w0ml1-0pk y rbs0s. The atom is

  Materials in which the electrons are bound very tightly to thev (aokz)7b ut(, ah2hsr4 bv33 sextm. nuclei are referred tose(3b,7h23r.u(x)vh tm avos4kzb t a as

  Materials in which the electrons are bound very loosely to the nuclei xoudap),cevn)::ts*vsj p-d4c3i i, and can move about freely within the matepnipjov scx a,,*))4:cusv :d- ed it3rial are referred to as

  A negatively charged rod is brought near one e.t 4/l xxav/ml d0x5hw*yngz;nd of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be charge0;tlw/ xgz/nx5l vdhma x 4*y.d

  Sphere A carries a ne11x e dl83rw,ymg dqt6t positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groud13g 8drt1qlxw,yem 6nded. Which statement is correct?

  How can a negatively charged rod charg2v+asdng9o dme ,x5*+v /d.r*d egznxe an electroscope positively?

  An originally neutral elecj0dliq0 mnf-1troscope is briefly touched with a positively charged l1dmi0 jqn f0-glass rod. The electroscope

  An originally neutral electroscope is grounded briefly while)v,,,a+kcb3m wsopi e a positively charged glass rod is held near it. After the glass rod is removed, the electrosco bvwc)ms,+ 3,kpo, eaipe

  A positive object touches a neutral elexlyc+j 5ak4n9ctroscope, and the leaves separate. Then a negative a+lc9k5j4 nyx object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated 6v6c696khiw d jjbbd2 bbz19otable. 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 each bjd9b6 b9k16w bbhv 62coiz6jdall?

  Charge is

  What are the units of the Coulomb co+lesqou2bctt (,;vf i;-kpq-nstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fp tu:d yvj* **u)zjq8first charge is larger in magnitude thantu)fq u**jvy:8 d*pzj the second charge.

  Sphere A carries a net chargewaoe zcw/c b0*5ps +c7 and sphere B is neutral. They are placed near each p+zb /7cc s*50oacwweother on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects /lp 198dyyxygx c*sno:03vmq attract each other with a certain force. If the charges on both objects are doubled with no change in separation, tpx13l*8 vg0y:qy9 o/x my nscdhe force between them

  Two charges are separated by a distance d and exert mutual qumoum ae7bv1s/ql h253r-r + attractive forces of a+1u-rsh2rmle u qv qo/7mb53F on each other. 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 force F. What happens to the fyae*l,b1 ,va2.pw qpkorce 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 ori., *qwlep,yak ab2p1v ginal value? The force is now equal to

  An electron and a protonyjm wr-6 1cp(;fxegi9 are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second elxf6mg-; jy e9rpw(1ci ectron is placed next to the first electron?

  An electron and a proton are separated by a distance b3 c a6 gj8kclzq):.qmof 1.0 m. What happens to the magnitude of the force on :cg zbcka6). q8jlqm3 the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of w27mvuv, kmw)j6, std1.0 m. What happens to the size of the force on the proton if the electron is ,mt7 w6)uvkv2, dsjm wmoved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. lb+h3u2 f za3we7 j2efWhen 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 force acting on the positivaf 3uhj f2eew+ 7bz3l2e charge at the center of the square?

  A point charge of +Q is placed at the centroir,z +wcpvdd 92fsti:p h/ 0na6d 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 dwa9np h+:d0 ds fz,rc6piv2t/ue to a third charge of +Q placed at one of the other vertices?

  Which of the following is79z1 h:x zzmsysl/z ;2 qdk.cq not a vector?

  At twice the distance 9gofnq -pc136kfpdqqe.rq 9w (dg, :tfrom a point charge, the strength of the electric field

  Is it possible to have a zero electric field value betw 67(ey:b x)vfo0jd+9qjdoi goeen a negative and positive chargqd0vof:7 gb6j)9iy e odoj (x+e along the line joining the two charges?

  Is it possible to have a ze*/czpj)yn*kj7 a)px.o 9a mzkro electric field value between two positive charges alj *.*m) z cpnkjx79aa)zpoyk/ong the line joining the two charges?

  Electric field lines near psitive o z6hpnecq 2zwq0i)j 8d ;;qo/prv50+ nzlv5apoint charges

  The electric field shil kc)a 3t7v6 csgvkq4x* wy0:own

  Can electric field liner1vu3i ske 8j0s intersect in free space?

  A solid block of metal in0/g-lj kyq;bo6m-l6 c e2pjbb electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the bl-mejg/jy2obc lb0-pk ;q bl6 6ock's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters aaxff(j x /)g,xq ,kwds7(da*xre each given the same charge, the electric 7/fx,wx,*aq d(sf (akg jx)xd field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform sadex/w . qoxb -x9n5)l(wwm;electric field is directed strxm -xas)qewld /w9.bnox( ; w5aight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibri 8ir.fxs+c be2um near an electric charge

  A positive point charge is enclosed in a hollow metalliqa(q71 i:v: a1xfeaiey mfh 57c sphere that is grounded. As compared to the y1q :(eaa7xf1 qvi5e mh:afi7case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of6ubv n8(fl- vj conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electk4dbcjqk j3: 36l9fhn-lgs )f 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 net charge of +2.00 mC. How many more protons thnj75;9dbq ,/ zudt-pwhc li(tan electrons does this pbui9c(5-dj7/w ;n t zthl,qpdiece of plastic have?

  What is the charge on vfr o xicw,htytnnt6206+o71 1 kg of protons?

  An atomic nucleus hasj o3.wtrs.dx4 a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated )pmupc:2, 3z6yr iz;u ;a-iw8tubgoe by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between themie8 w)rbmu t2 6uu;zgoiz,:ycppa3;- ?

  A 1.0-C charge is 15 m from a second charge, and the force betm8hcs9c 7qve/ween them is 1.0 N. What is the magnitude of c9e7sm/hq c8vthe second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are ek0 ( 9y6vnt7bg;cfl:icmq -q they?

  The force between a 15:rq z5eke wy$30 \; mC$ 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 forcvfgm 1 f zo.h49rr/mo2,oxo ,ze. If they are moved to a new separation of 8.0 cm, what is the electric force betwe2/.,hof9r1 forz o 4mzvx, gmoen them?

  Three identical point chargesu 92lg 5f de md1erwbbii2m,2) 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, and the third is at the 10) 2ml ,idb5wdfiu9bm r2ge12 e0 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placeufcs/uu(0 xs0/y/ xh f849w woxp 3tjyd on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right ayjpx/wu4xs0stu9(fo y u x/w f3c0/8 ht 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?

  Three point charges are located at the following positions: Q1 = 2ga-lcpdpib ovnj,4 -:njtae r;82y9 -.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 magnitjyaidln ;9- 2ra8:e g n-o4-jbtpp,c vude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the centerj*vjq8rlt0qr9 -l f; y37feua 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 acat7f l; qjv3fe0-qj89rly*r uts 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,-7 vp *uuc.h9m un0hx ruop,)i 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What isn0uh 9uu h 7mpp-oiv uc.*r)x, the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m,,lh93 gq he4v nw*)bee 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the qeh nv)bw9e ,gl h34*edirection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at thegq1uc*ehexyn j. 42( n vertices of an equilateral triangle which measures 30 cm on a sidg (yuh1neqx4e2 *j.cn e. 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 sf5a yz6, fh*wieparated by 3.0 m. At what point, on a line between the two charges, would it be possible to placefay6wfi*5z , h a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the ojfj ros wqazu.2xjx7r5:742 frigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net uffzjo2jjsq7 axrw5 .7: 2rx 4force on it is zero?

  Charge +2q is placed at the origin and jce 39 ;tkwl,3gkd a+8q28wot 2crhkgcharge -q is placed at x = 2a. Where can a third positive charge +q be placed so th 9kt gawl8kqwo+33hjtcgr,;8 k2e2 cdat the force on it is zero?

  A copper penny has a mass of 3qb*eag:1 x fb5 ar/4is.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 fob8bd 6;gaa 8zzrce of gravity by the attraction of a fixed proton some distanc8bad6az8 ;zbg e above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nod3b:id5cm2vj g*qw) b /ns8 binconducting threads which ar 8djvd m 2bqbng/b)i3c:iw5s*e 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 magnitude of the electwaf,h:.gdr9 b ric field at a distance of 1.0 m from the nucleudfw.bra :9, hgs?

  What are the magnitude and direction of the electric field at a distance of 12w eb,: nsq ptm43o.vt5agrcz8 5al r..50 m from a 50.0-nC charg8:ts3 otplqmz e5a24 gcr5 n. br.,vwae?

  A 5.0-C charge is 10 m from a sm)e+ojkxi w 1s*z)zay)+lf.nn all test charge. What is the magnitude of the electric field at the location +wynsfn)j)z*x) k+oaeizl1 .of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direc c,hoh iqhp03vh)njh(oe ,3, ytion of the electric field?,pi ho,onhhyc),30 veh 3(h jq

  A 5.0-C charge is 10 m from a so s)cema3:gn2hw(7d9ik 9i somall test charge. What is the magnitude of the force experienced7k(9e9nwc:iam h g2oo )s 3dis by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are , 4pg4zzm2 vjcseparated by a distance of 4.0 m. What is the electric field at a point midway z4g4z2pvm jc ,between the two charges?

  A 5.0-mC charge is placed at the 0 cm markyka 4 fahi,1obz,v i,3 of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the e,ak43ib i, 1hayz,of vlectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mart;hjd9zkvd:p 1 ksj7xk isz-na- ) p45k of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two c7z; htvpa 5sikkk94 xn:zjsd1p- d)- jharges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placezcfd-fr2 4qj; d at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point mid24jr -cdfqf z;way between them?

  Three 3.0 mC charges are at the three corners of a square of si7j5s7e7mgp vf gq9 2z8ifu r-qde 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the centep57g2- gj qrm 77zeu9fv fis8qr of the square.

  Consider a square which is 1.0 mb7v g ctb-)or b o;;; pnfd)jj+hflr(4 on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0r;cogf)j;b o l)f(b -j;+rtv4np7d b h, 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 when it is placed in a uniform eb gz (xy 2*xa:w5xyaa4q) y5qzlectric fieyy)a :x5gaq awz 5y(zx*bq4x2ld. What is the magnitude of this electric field?

  A particle with a charge of 4gql66 3c: vkze.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 is placed in an electric fiel djfs,+ :jd4;v95kruai 1zwbj d of 6000 N/C pointing downward. What charge must be v9 s5b:kr1dj+juzjf4ad i w;,placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. T1npoidj 6+0 um 77 0tfris6vsfhe ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude andv06fn+di i sto 0sfu67 mjp71r direction of the electric field?

  A metal sphere of radius 10 cm cak z:wo t,n+7ksrries a charge of +2.0 mC. What is the magnitude of the eln :,skkzow7+tectric 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 electri+a./ccnb;l +ec6wr7uc r ehs:c field/c r 6lc chcswe7ba+u e+;.:nr 6.0 cm from the center of the sphere?