State the law of conservation of elew*c1 yk)xsa9l,:t rpwctric charge.

  Is it possible for two negative c.q5e uz o,(*mgcjaf a+harges to attract each other?

  Is it possible for a positive and a negative charge to attract each otherbs:dkh5q e:3-av.p e o4.pk xn?

  A glass rod is rubbed with a piece of silk. During the 4ynbms7 myqovbi,06qv/c ,5 dprocess the glass rod acquires a positive cvy4ic7 byv0mo bmnq5,q6sd,/harge and the silk

  A proton carries a

  The model of the atoy p,ak k1wf*.gumzm+1 m shows a

  A neutral atom always ha; r/ug*l hc7yps

  An atom has more electrons than promg g l;x,dq7j1tons. The atom is

  Materials in which the electr7-gipcye mlodqai2 . 3so p4v j-lz6:(ons are bound very tightly to the nuclei are referred to p vi c7daz-:63qop gmyle-.os2 ( 4lijas

  Materials in which the electrons are bound very loosely to td,piihz)0ef eiwz(9no mp(46- fwe 6ghe nuclei and can move about freely within the material are referred to io )enz4 ifm((p6-wz0h6p9ge ,i efdwas

  A negatively charged rod is brought ne o71rnzt9flj0ar one end of an uncharged metal bar. The end of the metal bar farthef017 ol rztj9nst from the charged rod will be charged

  Sphere A carries a net positive charge, and sphert)ql v71:grnhd s q;b7e B is neutral. They are placed near each other 71h:s7vdl;qgtq br )n 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 electroscopei 1 ytrk;gkp;vfd2krg+* o:5w positively?

  An originally neutral electroscope is briefly touched with a positively ch jo7t+2(xll 4yxquyq u6 a:8lqarged glass(uoqyy lla+x:l4u82 xq 6t j7q rod. The electroscope

  An originally neutral electroscot 4,6 3l-tg tevnea;xi6ljos0pe is grounded briefly while a positively charged glass rod is held near it. After the glas 3a-g6o,seltev0lxt46t i;njs rod is removed, the electroscope

  A positive object touches a neutra:2nih2al,wr abg*;qhoor - v7l electroscope, and the leaves separate. Then a negative object is brought near the electroscope a r2 ba2vhh*, -7iog:;wlqorn, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on ae ol)de)x*0qdn 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 bo de )0d*ql)xeall, 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 (rd5/hq j+(vpz/hkmu 3l 4.msu qm*g fCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge isl)1qc3vgj7m7hlb lc 5 larger in magnitude than the second chab7 c5g7lj h)qc31mlv lrge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near e:ftyc,bnz *vb7,e w7w ach other on an insulated :, zeb,wcn7btwy 7*vftable. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges on a771f g zl;xvcboth objects are doubled with no chx1zlg v; 7ca7fange in separation, the force between them

  Two charges are separated by a distance d anxf)3 c. ngbm2rsifkib- /l *7xd exert mutual attractive forces of F on each other. If the chx)/sf2* k3bii.lfg br-nmc7xarges 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 9 a b 8acas9ifvmk7x.,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 now equalc9kaf ,avaimbx7 89. s to

  An electron and a proton are separa nt yu0nlp(pd(9e, (cfted 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 fir(y( n0,nlp (t9p udcfest electron?

  An electron and a proton are separated by a di.o/a e8girlf6i1uh xl/1fo-astance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron isl oleagix1auof f6/h./81r- i placed next to the proton?

  An electron and a proton are separated by a distance of 1y k)dw(we7fknj8 c 4e ,pbkq:1.0 m. What happens to the y:)dpk 4w1w7(k8e nkqj febc,size 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 center of a square. When a0qz1 n;lpjw( t 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 tzq01 tnpjwl(; he 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 centr:nmbwo u wf3 9mb5,a20glg7y p1bdm:goid 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 w::5wabbgl 7np 903ugmm , fbmod12yg 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?

  Which of the following is not a vejhkyvyek9(*k 4v, qfpqut : +vt), qp1ctor?

  At twice the distance from a point charge, the strength of the electric fiel 4t cb62knpu4pd

  Is it possible to have a zero elect-p,isv xw*j hri0* duz;w)0 omric field value between a negative and positive charge along the line joining the two chargex*u,0w*;s ijdow i r)p-v0zhms?

  Is it possible to have a zero electric field value between two positive charg(n52tyw ggh3)ao :jlq es along the line joinihwag5lq)y(o:n3 j2g tng the two charges?

  Electric field lines near psikma pp:q,-vs.tive point charges

  The electric field showinw/5- 7fl9h/q anuxvn

  Can electric field lines intersect in free spac.ty j(- 2wvl 5k3bkjxie?

  A solid block of metal in electrostatic equilibrium is placed5mo)dv7 le;lq tpu6aq9v;v/d in a uniform electric field. Give a statement concerning the electric field in thealvtv7peo )uv mq6;ldd ; 95q/ block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are vh:rqj9 z0wx9each given the same charge, the electric fie9w qhz 9r:0jxvld (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unip; co2sc-s a-8i jbaw/form electric field is dis isocj ab;pa 2w8--c/rected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near a 2c mhoho9s8rs1 rn7.mn electric charge

  A positive point charge is encbija ve-svv 373g 4cd4o)lmg2losed in a hollow metallic sphere that is grounded. As compared to gv)b3 esdcvjiao2gm 4473lv - the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties om a;4bv/vmv+w+ t dx9af conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron itl(mg. j byl,-yh.rz7s $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net chargvrb s+by9 k*sz5 iv49fe of +2.00 mC. How many more protons than electrons does this piece of plastyi4s5b*9z 9 svkb+ fvric have?

  What is the charge on 1 kg of protons?y9x*x n 4 r y4v*i4ujve 5g./wwq/vzvi

  An atomic nucleus has a chi9 )u23dbqp, vppy4e earge 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 a g1 duzmh(iinq)7j3kty tu7d j0; z4z2k-,oln nd -4.0 mC, respectively. What is the magnitude of the electric force betwee ,nzthkgtj3)djiou1iz y;7d0n 27-u (lmq 4zkn them?

  A 1.0-C charge is 15 m froskw;)mt:c 7feym f05u m a second charge, and the force between them is 1.0 N. ;t fu:mms75 )feyk0cw What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are txln6ugtx: 9ut-f)6hr p u (d(chey?

  The force between a q6wo.;1+bwa 5n kdsxo$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, iny8av6rez 8tazb7h/ l7 itially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, whlb a7z8 eta68y7h/vrzat is the electric force between them?

  Three identical point charges of 2.0 mC are placedx af)g0m9 j:prvx09m+kwhco 0 on the x-axis. The first charge is at the origin, the second to the right at x = 50 ck9vox)h 0pxj+wm 0rf: ca m90gm, 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 a si(ra p848zqere placed on the x-axis. 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 ea qpz8r(is48are 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 = 2.00 mC at x =kmta83 2nd) rpree9d) 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of thn3k)etaed p28 r)rd m9e force on the 3.00-mC charge?

  A point charge of +Q is placed at the center o m9fdfu ;akos9c.(-li 5kof hdf7)l n3f 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 acts on the positive charge at the center. What is the magnitude ofloifuf9dd5mf ola37 9.)cfk s;-(hkn 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 n j)o8b 3xj.gkzC is at (0, 0.10 m); Q3 = 5.0 nC is atj3 zbkxo ).jg8 (0, 0). 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 (0, 0.10 m); Q3 = 5.0 nC is 1jol cp1n+dt 4at (0, 0).tc j1o 4pldn+1 What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices ofqc v)oe+pysf:d+bg pt v.4q9( an equilateral triangle which measures 30 cm on a side. What is the magnospvftq+. 9 ecvgq:4d +)y pb(itude of the electrostatic force which acts on any one of the charges?

  Consider point charge 6aji-q 3o9rpvrv;s0ks of +Q and +4Q, which are separated by 3.0 m. At what point, on a soq i96kvp a3r-vjr; 0line between the two charges, would it be possible 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 +9.0-0(q5gj m/dc dq4oc-dfC charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is co /f-d gdjd04qmc(q 5zero?

  Charge +2q is placed at the origin and charge -q is placed at xa+2 o,jvc0d kt = 2a. Where can a third positive charge +q be placed so that the force on it is zer20ja o, dv+ckto?

  A copper penny has a mass of 3.0 g. A total hutc: ::ux8tz6jpn023tubf/0kekalof $4.0 \times 10^{12} \; electrons$ 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 n )j1ht-19ch chqaaio qwpp: a-uz01d6 ;4 daqattraction of a fixed proton some distance above it. How far above theh :1a4jp-;oaw ncp6 9 ht)adcz 1h-q 1q0dquia electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by n6mnq h (*yf,xt:cv -mfk:0f9:ryy zojonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threarcomy 9:ffyn :f (xqkt6ymh *-vj0z,:ds is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge oft, , n6-j xeeh5gkxv.r +40e. What is the magnitude of the electric field at a distance of 1.0 m from the ,vek6t,xrhxjn .-5genucleus?

  What are the magnitude and direction of the electric field at a df4i yf.g1i*o mistance of 1.50 mgi mi*o1 y4f.f from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. yb 60sj:--n4kb:ubyb4w1jhnn o m0xqWhat is the magnitude of the electric field at the lnbux:j -1 wony4 s:0qb 6nk0mbhjy4-bocation of the test charge?

  A 5.0-C charge is 10 m(hqzaoo ak:7aj7 )8tm from a small test charge. What is the direction of the electrio oj)t(:7a k aah7qm8zc field?

  A 5.0-C charge is 10 mqag24 ck(k3 ch from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test ch3gkcq2 a4(hk carge?

  Two point charges each have a value of 3.0 C anzah) mpu :slz8kt .hgw22x( m+j2msn.d are separated by a distance of 4.0 m. What is the electric field at a point midway between the + .):xwz(hg8ksh nms.a zjl 2m2mut p2two charges?

  A 5.0-mC charge is placed at the 0 cm mark 5+rvuov)+hi/qa yi m :4y a:mwof a meter stick and a -4.0 mC charge is placed at th wv5 iq:mu y+:/a oyh+rm)iva4e 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 3,9wx-kviigi and a -4.0 mC charge is placed at the 50 cm mark. wk9vg xiii-,3 At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mm kv83 )g)dmefkf7bs,C are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the pointf3b7kvkem)md g,)s 8f midway between them?

  Three 3.0 mC charges are at the three corners of a 0fu -rlrxn6.93s 9fgr d m16tifwy4losquare of side 0.50 m. The last corner is occupied rm3dgol s9lr64w19 ffxut6.i rfy-n0by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charg(3udkwnvq;+utidghz *,l9 (oes are placed 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 t( ;3oz+ d9iu(g vlk*du ,whnq(0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charsuf i/pz ++5zxq k/ys0ge of 5.0 mC when it is placed in a uniform electric fsi+ //z +s xqkzy50fupield. What is the magnitude of this electric field?

  A particle with a charge of 4.mg:- -,pm 3x 7en5avuruw,ctd 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 iqlx44ios5 rn*s placed in an electric field of 6000 N/C pointing downward. What charge must be placed oo xr5il4 4n*sqn the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is pla )xnr k+ zhqy8-hatbx+ ,o6ek0ced inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and directio 8+b+-rzkh6,ty0nex oh)qx akn of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the 1k2 o*3zl6gp5zdmc4haiww 3+kzeku n 5 fk36fmagnitude of the electric field 5.0 cm from the sphere's sun mwp53fzkki ew z1l gk6c 4362 3h*oa5z+fdukrface?

  A metal sphere of rada9rxt rh-/* e6;0 bm(pat1d ep,sdfszius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sp-xh,96 aapd0 / ;sdtr rebf* zest1m(phere?