State the law of conservation of elnrxdo :-; png8ectric charge.

  Is it possible for two negative charges to attract each othemsa +nr 7wss1dhfo-.jwxy rbfbe3( (,2rl86 br?

  Is it possible for a positive and a negative charge to attract each othertm 8mp(., sb4m9tfwfr?

  A glass rod is rubbed with a piece of silk. During the lu qg-fu9)7a 7ag ;tdtprocess the glass rod acquires a7t af7u9 u)lqgdatg-; positive charge and the silk

  A proton carries a

  The model of the atom shows 44z)iwr1zdglpvd + 2va

  A neutral atom always ha1 zx6 yzoz/l/cs28 kqis

  An atom has more electrons than protof9c npd)dxd i4z, 9w9nns. The atom is

  Materials in which the electrons are bound very tig h cylz1c0nm9j zh)8o6htly to the nuclei are referred yl)6z o01h98n zmcjhcto as

  Materials in which the electrons are bound very loosely to the nuclei and can c,sku 9rpip1 7b:gm z9move about frrmp bs99cz1u :k,g7pieely within the material are referred to as

  A negatively charged rod is brought near one enbcx-b 4w-.8y4ppva n*yo7veed of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chargedea-*7v pybe.wx pc-8 v4o4yb n

  Sphere A carries a net positive charge,8d-+kx+6qf7 ps j knr-zwi k*a and sphere B is neutral. They are placed near each othx-f8 zw*ka-7pnd 6k+jik s+ rqer 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 electroscope ha3 g(a5wuok;(u t)xc97zfly positively?

  An originally neutral electrosczg8 eter0 )kr+ope is briefly touched with a positively charged glass rod. The electroscopeekr 0r8+e)t gz

  An originally neutral electroscixm5k;d5.r3 m3o j 7ernhi1x cope is grounded briefly while a positively charged 355xx.horm;e jnk d7ri3m1 icglass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral ehtm,tk4j()pb,evubd u5 g e)9 lectroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it.be)d)5j9ubv,k(tph, eu4gm t What happens to the leaves?

  A large negatively chargpkj p7b. uv .o(pt(e7oed object is placed 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 ball, and stops. The first ball rolls forward, but does not touch the negative object. At no time does either ball (pt ( kuvooppbe.j7.7touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb kfh1kw( z3x6u constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge 8l,eug skr(h;mm1 6 qjis larger in ma( emjsr;,68 muh kq1lggnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are yhb : e cit9i5i4l eg*(go3sh3placed near each other on an insulated table. Which statems(yt*3ih o eh95b:i3l i4gcgeent best describes the electrostatic force between them?

  Two charged objects attract each other with a certain fosw/a11xx0ktbw p y +7drce. If the charges on both objects are doubled with nyspa1/+tx wx bd7w 0k1o change in separation, the force between them

  Two charges are separated by a distance d a n6lm-tes9; gr3oej- and exert mutual attractive forces of F on ea l9 njge6;r-ms-o aet3ch other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each v*w1eas bd ,;mother with a force F. What happens to 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 equaad1 b*, mvswe;l to

  An electron and a proton are separated by ny155 /qxmmpy 8d vlp4a 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 first elecvy5d4p yx51p8/m lqnmtron?

  An electron and a proton are separated by a distance /ei:m y-, ogbwof 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the po-im /:gybwe ,roton?

  An electron and a pro vd hnqg;b8 uck9ao-4:ton are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the prcvu-:ok d h4an8b;g9 qoton?

  A point charge of +Q is placed at the center of a square. When a second pa,d+ira ia,0 zar8p55zqvtw6 :* h+avwmw*nb oint 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 positw5, i8* wiaztr*5d 0+vaqb,:pv hmnawa6r +azive 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 triangle9b12mnwkjroed/yj s4 lgyk -- 7g77zb. 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 lgygk/ o e-k b7-jrz4w79dnbmjy 271smagnitude 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 norn; dcj+p )-3q, aarjit a vector?

  At twice the distance from a point charge, the strength of the electric fielddivrr/98hio keny 6v7 cifks-7bs:19

  Is it possible to have a zz0wmdti t7y)) 8 tdq9tero electric field value between a negative and positive charge along the 9 mt8d7ttztd)y0q)iw line joining the two charges?

  Is it possible to have a zero electric field value between two positive chargc/ 2cnexf8 )mihcg(6/jip c3 jes along the line joining the two chari3 6h )pm/c2j/ng(cc8jef c ixges?

  Electric field lines nearvzv1u l3ahch6(kv) v: psitive point charges

  The electric field sho/dn jf-/8pgwlwn

  Can electric field lines intersect in freeg t5ps b5yyqu )z9( otoo*e58j space?

  A solid block of metal in electrostatic equilibrium is placed in a unifkab*s0ihrzrf63 c;; a orm electric field. Give a statement concerning the electric field in the block's inta 3r0k6i;bch*r sz; aferior.

  If a solid metal sphere and a hollow metal sphere eqqq6 ro f5(g+of equal diameters are each given the same charge, the electric field (E) midway g(foe56q+r qqbetween the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform (xv h,/m gb .b7pypsh)electric field is directed straight upward. What can be said concerning the charge on the block's xhppbyg.hv(b/7s m, ) top surface?

  If a conductor is in electrostatic equilibrium near an electric chargzu3iv.knn)l3sb 1y.je

  A positive point charge is enclosed in a hollow met,9e dzyl w7,wi.t6ok jallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point6wdje,y7 wk 9. tl,izo directly above the hollow sphere has

State three properties of conductork4/6:od ia exas in static equilibrium.

State Gauss's law.

  The charge carried by one electrol2 -kbwgn:m5x x vz;a006labpn 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 prot8 r k,sym y*rh2bk*zi,ons than electrons does this piece ofib *hrks k2,r y*8y,mz plastic have?

  What is the charge on 1 kg o7aefapwv r6ymrc)0-- f protons?

  An atomic nucleus has z*u hn;ddb43va 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 a9u -lhro d5rkg06w3iw awqd a,;9hg.q nd -4.0 mC, respectively. What is the magnitude of the electric force betweenq53-aogr wdg daw0 .99 wk iru;qhl6h, them?

  A 1.0-C charge is 15 m from a secov 1g53/t oiany4v(l vgnd charge, and the force between them is 1.0 N. What is the magnitud4a( /ligvv15og 3vnty e of the second charge?

  Two 1.0-C charges have a force between them of 1.pvs .vt fm; x,qlxv+*c84iz6i0 N. How far apart are they?

  The force between a i:ych hdj24qv0seop(t kq6; ;$30 \; mC$ 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 force. If t c3lgb :llg55dhey are moved to a new separation of 8.0 cm, what is the electric force gblc5 g53:dllbetween them?

  Three identical point charges of 2.0 mCb1qb8 qs2qro6 are placed on the x-axis. The first charge is at the origin, the sec os68b qrqb2q1ond 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 of +2.0 mC is k0w7u 1:l f)hn(kfgv qplaced 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 actsfl7uf0g1nwqhk k :v() on the charge at the origin?

  Three point charges are located 8+0u8(rivoz+-nh4+ 9yhkcz je ufn jl 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 -0h8+nu ov98 +(j4k czfzen lhj+uiyr3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second poibm 7gq5(dhzp*f (u q6lsut)8 snt 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 charge of -Q is placed at the lowerlqd mgspu(fs* b 8t)5(7 6zqhu-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is f va.ipyr;5 +wat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0y fpv+aw;.i5r). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Qdc+9u7w) h3ed :lf2jsghx g(f 2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC char 2fsu3chl:7gw(ej hgddfx9+) ge?

  Three identical charges of 3.0 mC are placed at the vertices of an eqqm5 d3 2ufe0cz *t8ybguilateral trianglf 80zmty*dcbeq3g 52ue which 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 +4Q, which are separated by 3.0 m. At w hrm5fd9) db/qhat point, on a line between the two charges, would it be possible to place a charge of -Q such that the elechf d9/dr mbq)5trostatic force acting on it would be zero?

  A +3.0-C charge is at tovyqd1ld)f/ pa8l sq0*3z/vg he origin and a +9.0-C charge is at x = 4.0 m. Where on thevfq/qd)y plvd g/lso 8* 3a1z0 x-axis can 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 atfa5;aj-c6b acj r ww7gq-, +gb x = 2a. Where can a third positive charge +q be 67j cfwra;-w b+b j5aa-cgg,q placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g.eaipc41 g(ou 6 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 ,muu lmy+b 1i3)jno 7jup against the force of gravity by the attraction of a fixed proton some distance above it. How far above 1m)+b7 muluij, y3onjthe electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductin*r ;if woi1.upxr3dnr+b 73 hpg threads which are 30 cm long. Both are given identical charges, and the electrostatioibr df *+;hw .xn ur7ppr331ic 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 o fis/ okb;htu25o0a y pz+)jy7f +40e. What is the magnitude of the electric field at a distp i; fao52zujh 7k0so/ +ytyb)ance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a d7b-urr,r+ sudistance of 1.50 m from a 50.d+,- r7su rubr0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnk3wqs *ehb04 y/5y lvmitude of the electric fih*y q k3 bme/svy45w0leld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge..od-sb 2mhit 3 What is the direction of the electri3ti. ombs2-hd c field?

  A 5.0-C charge is 10 m from a small test cham(y( h10l fceirge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locatioh(li (ym 10cefn of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance of k8tstg.);s uf 4.0 m.tkugt.;s sf8) 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 xpw 0ao+y8+ b :ntmgs;stick and a -4.0 mC charge is placedgap8+wb +n; mtxo s0:y at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mlz 9rhu2x n89xark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point o ux29 9n8lzrxhn a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at l7kkv)dndh-1dc v7-c x = 0 and x = 0.20 m. What is the magnitude of the electric field at 7dn 1v7 chk)-kd-cdvlthe point midway between them?

  Three 3.0 mC charges are at the three cornersa4p( -n(lr)b.(cukpq)hcq vv of a square of side 0.50 m. The last co vc4rbak(hl))(u qc pn.- (vqprner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1 pvdp:no p/p74q::usu9xtyn -.0 m on 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); +3.0 mC at (1, 0); -3.0 mC :to:y/pn4d- svpp9 p:uu qx7nat (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 uniformy)sdffwy3: ix.e ),b0xxgc0 u electric field. W)0xs0 egi3cd y,uffwx:)yx.b hat is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a )wyofp hd.-9n y8o3)a,moi .vt j* +lougle-imass 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 electr/1llph t/+ wg)ity8,us zb2ctic field of 6000 N/C pointing downward. What c)stcpi 2byl u/1 /8,gwttl zh+harge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2jcu d42h 66uqol dk/t-v+x)cw.00 nC. The ball is placed inside a uniform electric field, and is suspended against the fjq2 u6wk)-d 4tvclo xu hc+6/dorce of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a3zn,lf+o/ tpp charge of +2.0 mC. What is the magnitude of the electric field 5t/ p,pzof+3ln .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 electknokwl/zn2* ku o0t/- ric field 6.0 uno -k /wo0kl*kn/z2tcm from the center of the sphere?