State the law of conservat4on /(kwf --0f tn(5mcwobmyz ion of electric charge.

  Is it possible for twt1j.wbqdt8o q1dra 8x3+ fsh .5sg+m ao negative charges to attract each other?

  Is it possible for a positive and a negative chargek ..pgs,(d nde to attract each other?

  A glass rod is rubbed witho xa tc)s:+ou/ a piece of silk. During the process the glass rod acquires a positive charge and the )ao+ox :sc/u tsilk

  A proton carries a

  The model of the atom sh8 xnopiiwal i.0gn/g7:z ;b1s8t+kx cows a

  A neutral atom always 0mon 27qq8 *vq,4/ypbev,-jbxcopl mhas

  An atom has more electrons rl9w)d ns,0z tthan protons. The atom is

  Materials in which the electrons are bound very ,qprad 0z56y/rehm f3 tightly to the nuclei are referredy05rpe am,z 6f3dr/h q to as

  Materials in which the electrons are bound hg4fa 79mok:mytjm ,7 very loosely to the nuclei and can move about freely within the mater 7otjhfmm kya4m:97, gial are referred to as

  A negatively charged rod is brought near onu suq3td dq8k.) 5-zgke end of an uncharged metal bar. The end of thequ. dt)-8gu53k dkqsz metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. jw3ekw(k9kci*20hfm h8m3 sd They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that c *jwshk2 dwmf93khem i( k830is grounded. Which statement is correct?

  How can a negatively charged r.i ;a) t/4qqy.(g ucf8w n rcarb57suhod charge an electroscope positively?

  An originally neutral electrosco lbd2jy nt;j x;g0zv( orz nnay+;dz.4s.e0 i.pe is briefly touched with a positively charged o b.n;zn4 yzjsyit2+.re0l;. gxz 0dvjnd a(;glass rod. The electroscope

  An originally neutral electroscope is groundeym0v*ahb5uuqd d8od-l1 )c7 fd briefly while a positively charged glass rod is held 0fd87*u qd -m5yd1ucal v)bo hnear it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leav;i2dlh; zsa m-es separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the les-2i;;dl hazmaves?

  A large negatively charged object is placed on an insulated table. A neutrf3 7gs wo)sym7g nr1(kal 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, strike(f g)s rkwomy17s7n3 gs 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 Couzs2u kh)m-2a* lt.hfjlomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. oh6-:vms n:zk The first charge is larger in magnitude than the secs:kvh :mzno6- ond charge.

  Sphere A carries a net charge and sphere B is+h/4zj -xb offem6ee0 neutral. They are placed near each other on an insulated table. Which statefe mhee6z4b-+jo /xf 0ment best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chab:r3h 8wdth/d rges on both object dbhdr/th 38w:s are doubled with no change in separation, the force between them

  Two charges are separated by a distance d an(qnw7 ((acp rn5xmcl7 d exert mutual attractive forces of F on each other. If the chargesna lm7((qcw5(rn7xpc 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 fok w11.tmcm3 j+e -o9-q. wkneif.n vljrce between them if one charge is doubled, the other charge is trip.-ie .ej wmfq1 . 9om-cnknjtk1wvl+3led, 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 separated by a distance of 1.uamv+iadd 8z 8+a 27 (f:vdf1ukq 7yxp0 m. What happens to the magnitude of the force on the proton if a8z7pv2+ 8d+yik: m( 1uf uadfq7axa vd second electron is placed next to the first electron?

  An electron and a proton are separated by a dista.td,x4+;-k r3v2mktxanid x tnce of 1.0 m. What happens to the magnitude of the force on the first electron if a second ex; kdv.x2i4t,akt-r 3xm tnd+lectron is placed next to the proton?

  An electron and a proton are separated by a disjy ; u*7 kykiv.;f0e pte;pcup-1git:tance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m cli;t:-fivek pguk;cy .p 07e*pt;j yu 1oser to the proton?

  A point charge of +Q is placed at the center of a square. Whe (dob06bxoz- /uccd+j -txkx8n a second point charge of -Q is placed at one of the square's corners,( zb-x do c-+dxx buo6c/k8tj0 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 positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral.r1im/9, e4t-z0yo hat iblv z 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 blz.4ayt1 i, hi ztv 0eo-r/m9to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vekl7q ;kfx 7pc7u )7bgbctor?

  At twice the distance from a po,t4f+h26dh o.zu e hoqint charge, the strength of the electric field

  Is it possible to have a zero e oocgo-9, (rdgp,q 3nzlectric field value between a negative and positive charg gp9(c ,q dgozonro-3,e along the line joining the two charges?

  Is it possible to have a zero*p.kgy 7*pp so electric field value between two positive charges along the line joining the two charges?*sk7p y. pgo*p

  Electric field linesb5zr: 2h0 lude9ald u; near psitive point charges

  The electric field s; +1tu0bv nym :keph-hhown

  Can electric field lines intersect in free spa )clu4u(vkx gx;6dsc;jx)lh. ce?

  A solid block of metal in electrostatic equilibrium in3zs )oo20lt.od4gsw s placed in a uniform electric field. Give a s.n2o)gost4 zdw0 3l sotatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diam1c bz; jg(sf 10evxot8sk jr9;eters are each given the same charge, the electric field (E) midway between the cente18ce1j9 bvgr0(s;;kxozt jsfr and the surface is

  A cubic block of aluminum rests on a wooden table in a region where 6yr;o4; vxhigk erc*(a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top sur(4 rig k;r6c*yvxeo ;hface?

  If a conductor is in electrostajho-fv/5-oh zeoao 9//odiiwmn 8 m0 c.h p)2mtic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is g/ 8kv5qclend l,v b*d0rounded. Asld5n*lb8c deqkv0,v / compared 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 c ais kg74c.:xequilibrium.

State Gauss's law.

  The charge carried by one electron isv i d0113jg ,t(twwdrq $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net zv9gd4ch 4e-s4bej24pnn gp;charge of +2.00 mC. How many more protons than electrons doezdpgg4b442;jh 4 e-9nv cpse ns this piece of plastic have?

  What is the charge on 1 kg of prx kdstv *08twcn 5*:ag3(oyu votons?

  An atomic nucleus has a q (cwo2a :q:idcharge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separn+uw8-o:l i5 klc0 xyrated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is u ilxyor:c08 nw+k5-l the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second c9iz5 enp s+jjt 5w8k+6)ohjdqbgs (yq8;5m jaharge, and the force between them is 1.0 N.wjeq89dq 5k z;ysom)bpj(snt68 gj5j 5ia h++ 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 the)lv :3/ rp7i dx0lydh 8zm9t6 k)ebrbxy?

  The force between a x2zzcw/u g5z: $30 \; mC$ 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 ayg, ab(2,/jr maj 0ltdc/k, i1.0-N force. If they are moved to a new separal2/iyra k,m0b/jdctg a, a(j,tion of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firskh7(b5vv) vrrt charge is at the origin, the sec v)7vkvbr5 r(hond to 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 osrj3r z31f qv,f +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 thj,31sq zrf3rv e charge at the origin?

  Three point charges are loc dr+f/-yhxj h+ated at 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 h/-dy ++jxfhr charge?

  A point charge of +Q is placeg raeszpb 29 z5xrl48(d at the center 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 acts on the positive charge at the center. What is the magnitude of the force that acts on the center charge if a third chap2 zxz bl4g(8 a9rr5esrge 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); e9 ho ot-ow3yu9xl f3*Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net o3 93ufwx9lo*yh- oet force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.17ojs:lg e: to0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What o:ogt1 s7el:j is the direction of the net force on the 5.0 nC charge?

  Three identical chargesrz6j ms0udn2m(e;s9 r 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 electr;dsr(z6mr m09n2suje ostatic force which acts on any one of the charges?

  Consider point charges of +Q and m ;31akl9rr (mup xj9p+4Q, 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 o;lmxapj p 1r k93r(9mun it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C csm j80*-r qanxharge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force*q a8mn0sjxr- on it is zero?

  Charge +2q is placed at the origin and charge -q r7f3oq*ph/ e kv0ofu*is placed at x = 2a. Where can arqkf 7fo3eopv0/ * hu* third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of ncqhz 4/-2no r3.0 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 attractiono+ vunxktkdw14e /+m / of a fixed proton some distance /ond/+teku1m 4+vxkw above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductinn n7v ) tfj63yjszr.c0pv0 k8og threads which are 30 cm long. Both are given identical charges, and the e0o3k)s t cpz6y8 j7rvnfnjv .0lectrostatic 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 morg v1wjg;a, 74jal/r 9rwza3 agnitude of the electric field at a distance of 1.0 m from the, r;wr1 rjw g4jzg3aoa av/97l nucleus?

  What are the magnitude mi/pii1j( d(ar4+ sgt-gy l*xand direction of the electric field at a distance of 1.50 m from a 50.0-nC cha/yiaxpis-j*lt dr( m(4+1 iggrge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o )5 ywhnnj+ch (m: tust2p-ed8enp5z2 f the electric fiedh:nn j+et2utsh ze52)- cnwym (8pp5ld at the location of the test charge?

  A 5.0-C charge is 10 m frc p c997-v 8;tffnr4ocywry 1gom a small test charge. What is the direction of the electric fie 9n cf91 yw4fgo7c;rvc-8yptrld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitud3ni t e8bb68jre of the force experienced by a 1.0 nC charge placed at the location of the test chbin b38j6t e8rarge?

  Two point charges each have a value of 3.0 C and are separated p9 :n+bbac+ o. 3x5kydzial; bby a distance of 4.0 m. What is the electric field at k3x9;lbp+yo+.:bc bzna5dia a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chap8 o. mo(v4dr.opfl hsg05r-rrge is placed at the 50 cm mark. What is tg( or-ro.pr vs.fh lom548d0phe electric field at the 30 cm mark?

  A 5.0-mC charge is placed at h3 ,,ok avz.nythe 0 cm mark 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 charges is the electric n,.v y o,kzh3afield zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x/ajl y vir 8,sw)ekv+; = 0.20 m. What is the maj rv+al,/sky iw )v8e;gnitude of the electric field at the point midway between them?

  Three 3.0 mC charges ar,7aj(eafx xz 2)d5c yze at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC c)a df(ez5, x7x yzacj2harge. Find the electric field at the center of the square.

  Consider a square which is 1.t6 8n5/g kzlfo0 m on a side. Charges are placed at the corners of the sq lfzgnk65 o8t/uare as follows: +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 mm9 6fvf6q)a65gojaqh C when it is placed in a uniform electric field. What is the magni956oq qgfma6fhv)6aj tude of this electric field?

  A particle with a charge of 4.0 mC has a mass ogkr iim,/on s): 4rbf:f $5.0 \times 10^{-3} \; kg$. 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 feg j,lv1wdj5xw** ape97wxb:e6mpy2 z + fx +oield of 6000 N/C pointing downward. What charge must be placed on tfx+ 2p6 ml pwvbwexxyj*e5*gjd,19+aw: zoe7 he ball for it to be suspended?

  A foam ball of mass 0.150 g carr0 f;o 0 d)+nmsd1fwqa.wu:;nosg )qqd ies a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is u+ .:q ;onqsq)mdgaf )sfd0 doww0n1 ;suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a glwth zhb2p oh;,5;k 8*oh cx 0sg5gx(charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's gt* ,52 lxcoh(0g5 bgxsh;8zhhw;opk surface?

  A metal sphere of radius 2.0 cm carries a charg)7ph lbg*f+zkg z9 w,te of 3.0 mC. What is the electric field 6.0 cm from the center of zw)zt, fhl bg9+*k7gpthe sphere?