State the law of conservatip6 3t d o05b9hen/sgkion of electric charge.

  Is it possible for two negative charges toz5i3:vbi i6gb attract each other?

  Is it possible for a positive and a negative charge t m+/9b:r mmqnao attract each other?

  A glass rod is rubbed with a piece of silk. During the proces9tzy) jqck*6l9ygm)gyh3/ jq s the glass rod acquires a positivjyq9zq6j g9ylhy3)m) kg/c *te charge and the silk

  A proton carries a

  The model of the atom sh.4w udgkbu, +ewuh1d; ows a

  A neutral atom alwayhad/0-.bg rzx5oj8r hcp6 l5 bs has

  An atom has more electrons than 57)glu/;bk;jee;ju djtigun 8hn p- hvy 0*i.protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei i ))pvu3rsgl1are referred tov gul )ir1ps)3 as

  Materials in which the electrons are bound very loosely to the nu*6xr-et x .fhsclei and can move about freely within the material are referred s* 6hexr.- tfxto as

  A negatively charged rod is brought near onec)me6zie (jiym:(gm r8ulo/6o;eux 0 end of an uncharged metal bar. The end of irc0mmo;(ue xe)euog:ml z i(j/ 686y the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, a heyl8w rll ;xd8:.65baseb 5znd sphere B is neutral. They are placed near each other on anl 8be5e8;r y:6was.bl dlh z5x 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 electroscope positively?ki yqzip;55 1givqk6. 5hlp+o

  An originally neutral electroscope is briefly touched with a pos:: hu2rdvlzfd/4rilz2r - g9citively charged glass rod. The electr-rr 22v4 /dgfil rcd:z9uzhl :oscope

  An originally neutral/- w -uu cvbu4v uivf,5shep3( electroscope is grounded briefly while a positively charged glass rod( s- cvu4uu fuh ,vev5wp/i3b- is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and tgmiah,/7:e/ b h4l sx 8m:jelhrd+ k*vhe leaves separate. Then a negative object is brought near the electroscope, but does nothkh,rml h :e7i4dgv 8*l b s+max:/e/j touch it. What happens to the leaves?

  A large negatively charged object is plqzen29kbc(o ff (zu1xp+/ sa (aced on an 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 baxeao+1 /ub((sf9c kzpn(fq z2 ll, 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 2ihb,x/vh+,k ,mfi zhn h /7sa+y ymh1the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects ar3lhesf9 2ke).osr c/e e separated by a distance d. The first charge is larger in magnitude than hf. 329lek)ro c/eses the second charge.

  Sphere A carries a net charge and sphere B is newpa4oc849 lr t;kyc;iutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic 8pi ktlra;; 4oycw4c9force between them?

  Two charged objects att.a,18n 3 w gnmd+vvdzlract each other with a certain force. If the charges on both objects are doubled with no change in sepad1wg zd,8lnnv .3+ vmaration, the force between them

  Two charges are separated by a distance d qd 8htre,m7*nu01t)dk u*ngn and exert mutual attractive forces of F on each other. If the cud)tnqmn 8kdh1,n0*trg*7 u eharges 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 hapk0pm.fx m (0a d9j3n *pyqna/xpens to the force between them if one charge m mq3 x fykp/dajn 0a9p(.0nx*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 separated by a dise6kq)o ug f7:.3g clvutance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is p u. qvlg7gok6c)u3e: flaced next to the first electron?

  An electron and a proton are separated by a distance of 14id* t3d xk,; x jo2i9c:k1v:vwogh wk.0 m. What happens to the magnitude of the force on the first electron if a second electron is pl:i ogv,ik hotk9kvdxcx w *4;2:dwj31aced next to the proton?

  An electron and a proton at3k ba0 tvbwm+ (amcb2gz 5e09re separated by a distance of 1.0 m. What happens to the size m3tbmw(a9b 25 k t+0vgazbe0cof 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 squfk5 y,c0y*2 jmsc8ukmare. 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 mkc0 cumy f8sy*, 2k5jthe 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 equilatera8q ijmwqs e p2vw5pv7;-l29uq l triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic f582-ul 2svq;9pvi pw q7mqjwe orce 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?

  Which of the following is not a vector?li5 u06d rv7-z yv(pui

  At twice the distance from a point charge, the strength of the electtp -ri0t7w) fvric field

  Is it possible to have a zero electric field value between a negative and positi4n x2x ch83lybve 4 cx 82hbnxl3ycharge along the line joining the two charges?

  Is it possible to have a zero electric field value betwe2w mfc3e-j/meen two positive charges along the line joining the two chargmj/3fe we2c- mes?

  Electric field lines near psitive poi-k a f**f h1.3p nbchk1 2fkq;mv3afm(l(jwwmnt charges

  The electric field sho:7ysb ;uys l le)lp*h/wn

  Can electric field lines8d;qh3suuh,mw zx*j . intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uni 2yqf;rg2q ji6form electric field. Give a statement concerning the elect6gjqi; y rfq22ric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each sg-7, 2fl3 qjm(avpzc/ 5 amzrgiven the same charge, the electric field (E) midway between thejfq2 gr- 7azml/5spa,mz3c( v center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a un :l3/fvdmmwgy0* n fg9iform electric field is directed straight upward. What can be said concerning the charge on the block's top surf d mnf/3v:wygg* ml09face?

  If a conductor is in electrostatic equilibrium near an electric chgn 9x -jcmf1 o(qwf-yc46, )bq2qgyu carge

  A positive point charge qr/ bwjc0/pk7 +k5qrl is enclosed in a hollow metallic sphere that is grounded. As cocl0qj7 rr b//5 wk+kpqmpared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors +zg q, h phni8lre/6v4in static equilibrium.

State Gauss's law.

  The charge carried by one elec; 0c9dqfyla- ctron 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 thy 9b n mtrw:rvsd 2g(/i8p,,kaan electrons does this p8g9,s/ 2:r,y(kmd bwvtrapni iece of plastic have?

  What is the charge on 1 kg jjg0w/ 6ep fg+of protons?

  An atomic nucleus haszgys ;:njl,0l2 nejbkjk 0u/eo-.m k 3 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, have charge values of 2.0 and -4.0 mC, rr 0w4hjn2bv 0jespectively. What is the magnitude of the electric fnv jh4 w0bj2r0orce between them?

  A 1.0-C charge is 15 m from a second charge, and the f,fk8; 9tjk* h.9( )gts:xoc uy wqzchyorce between them is 1.0 N. What is the magnitude of the z9w c: .ckyk y( hxu,oh8qjs;9f*ttg)second charge?

  Two 1.0-C charges have a force betweg yl1n apw6q-7en them of 1.0 N. How far apart are they?

  The force between a wmkpce5mt.zccktu /e:g+/ . 0idej( rw) n9h7$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially kv9 :+tz9m ds1k/yoa i2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between theasvm 9 z k+1:t9ky/diom?

  Three identical point charges,ea0g607s nnutpx 1us 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 100 cm mark. What are the magnitude and direction of th6s0 7 0seg1unapnut, xe electrostatic force which acts on the charge at the origin?

  Three point charges are placet0qz a.n.4lpw d on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C zpa40.wq .t nlto 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 origin?

  Three point charges are located ad2do vu272ogalo(tmw/k;zp -t 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-ol(owo u 2mv7zdg/ 2;-kp2 dtamC charge?

  A point charge of +Q idyxai.u ag* 9q) 1cr0ms placed at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed th)aic9.am 1rgx q*0uy dat 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 m); Q3 = 5.0v7uqgkk e)v,c* qn33k - efi*u nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chag*u-qe3,vke v 3 k7)cu* kqfinrge?

  Q1 = 6.0 nC is at (0.30 m, xfb l 7(s njken dbk4j41ploqf4t:/; 50); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the dirk(dp kolnfl5xb471/4 :j t; q bsjefn4ection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equz7sdp2-b d*(dthle* milateral triangle which mea*7*d-dmz hep bd2(stlsures 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 ,:d/3 3yhy1frs vttpl+Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two cha 3h, l ys:dt3prf1/yvtrges, 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-C charge is at x = 4.0 m. Where on + wa 24ahrom)a;vwp* f:p5kcxthe x-axis c;ac )4o+a:ppva*wkh2m wx 5rf an a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wher4 sfpjnw+f0 jc 2m,lp(e can a ts cmpjw ,l+fpj40 f2(nhird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g.thw+c6 d7fdj5 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 attraction of a fixepj+ +2iotig- sd proton some distance above it. How far above the electron is the protojs t++ i-goi2pn?

  Two 0.20-g metal spheres are hung from a common point uct,c9,pb7- l 3.kgm8w t6ckygxam ,l by nonconducting threads whic,c.- 9bgm,86 k,c u7lttxk3ga wypl mch are 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 zzv ;g6xn35z5wi l seqjze9d ,8+cfu6magnitude of the electric field at a distance of 1.0 m fro9snzwzf xe+g, lv 3z 6;q565j cez8dium the nucleus?

  What are the magnitude and direction of theo9ad s :1 gh bjqt*u,r*1mwv.e electric field at a distance of 1.50 m from d:u. obmj g9s *t*r,vae qh1w1a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is f mogfk5:6w m-3ll 0anthe magnitude of the electric fie f wkf6m lln-g53oa:0mld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What icbkp ex:(.xt o,c04bhs the direction of the electric f x:tboc(4 ekx p0bh,c.ield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnuq z6.v5 -k1o (yhpwlzpg4b5 s(lzuj,itude of the force experienced by a 1.slgypv,zl(p-5 u64 u qo(5j hw1 zkb.z0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distancyj-wm zd 0sj4c-, ,uiy 4,vqfce of 4.0 c0fqmsy iw,zv-,j d4ycu,j- 4m. What is the electric field at 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 y8(ev2 5qi v .nd:b91mlcsq fxmC charge is placed at the 50 cm mark. What is the electric field at the 30 cm vib .fy 5x(cmde1qvl: 82nsq 9mark?

  A 5.0-mC charge is placeg+2;goqk(zbp a s r42bd at the 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 c2(qr; g+ zs 2ag4kpbboharges 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 m. i1yvq,gi cf, h-mi)+utj8 f6 n What is the magnitutmvfcg- j18i ,+y)i6qihnu ,fde of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of aaml67 hw+4j x bhx4cc1 square of side 0.50 m. The last corner is occupied by a -3.0 mC 4ab4 +c1x7hljhc6xw m charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a sisnlaq3 jf8xkkrk) x46b;aek:+ 7l lv5de. Charges 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 (0, 1). What is the magnitude of the electric field at the ql5xr 4la+k 67e 8nxlk3v :b)f;jkksasquare's center?

  A force of 10 N acts on a charge of 5.0 mC when it 6h(wsd.ik. hv is placed in a uniform electric field..w.iskhd6v(h What is the magnitude of this electric field?

  A particle with a charge of c a7r,eej se.tp ++(fe/9rh ouu v6;b)u.uw vf4.0 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 t;*2y( bwl2ebzz0 5pkoh3ta vfield of 6000 N/C pointing downward. What charge must be placed on the bakw5t2o;bza(lh32z *bpe vty 0ll for it to be suspended?

  A foam ball of mass 0.150 g carriesh.u9(kn l0f sk a charge of -2.00 nC. The ball is placed inside a uniform electric field, and 9h kk(.0lus fnis 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 charge of +2.0 mC. What is thlc9ucz+jm c-ks4/ o v9e magnitude of the electric field 5.0 cm from the9mvz9o s/cuc4l -c+jk sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is sbqvbe;:nlf 3em+ p/o *cb0*othe electric field 6.0 cm from the center of the sphere?/n;*+ b f3plq: bv0seo* omecb