State the law of consertg 3zxxp2 +5qcvation of electric charge.

  Is it possible for two negative chargesrv)yjel: hwwa91:m* uajt3 y3bc4c o; to attract each other?

  Is it possible for a positive and a negative charge to a)oabkx1mer w(t / 5*fqttract each other?

  A glass rod is rubbed with a piece of sil*mn md3ozb 1*kk. During the process the glass rod acquires a positive charge and the sm kb3nm*z*1d oilk

  A proton carries a

  The model of the atoe ,lv6rp o51)wbpd uz5m shows a

  A neutral atom always hc1 j1nrjts7/ ek8 jg:kas

  An atom has more electrons than protons. The7nugm lz:i d ,1n--wmz atom is

  Materials in which the electrons are bo+*e 9bs2f(tq-5 gz(rh sewmct und very tightly to the nuclei are referredmse wst+ (r bgfc2 5-zt*(9qeh to as

  Materials in which the electrons are bound very loosely to the nuclei and can m-3wwp +c:hkzq o3w +ckhzp-:qwve about freely within the material are referred to as

  A negatively charged roxn ppe kei26ft7e5g7b;a z4l) d is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod wii27kn; gapee5)pb 4 e ftx76lzll be charged

  Sphere A carries a net positive(h8oil7 dvlg1ry+9j32 zro nra w1ek) charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphh9rvl2 y3 )1gl8r 7oe(k1ji d zawno+rere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivelyq*den4d :m8bu?

  An originally neutral electroscopemk j1y.2cq-tx9nxop 0n;5(d1+ )yrve kxaycq is briefly touched with a positively charged glass rod. The electro kdq1 mynqvkj en.10x95pyc)y-rca+t2(x; ox scope

  An originally neutral electroscope is grounded briefly while a positively q wgwp68u) lm/e)dkgr 2;qq0bcharged glass rod is held near it. After the glass rod is removed, the electrosckq8wu pggw2rle 6/ )q0b ;dm)qope

  A positive object touchensv. w)y5w4)lutx9 rd s a neutral electroscope, and the leaves separate. Then a negative obj) 4ry.s5wutx ld9vnw)ect 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 table. /l/cck - mav2qA 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 eaml/ q-2ca/ck vch ball?

  Charge is

  What are the units of the Coul r 3wbw*8nq*yromb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. T94k vg d+8a4 * yb.lpna3yjgtehe first charge is larger in magnitudevy l nya*8.9e4pg4jt3 b+kgda than the second charge.

  Sphere A carries a net chal50keu.+l mvbrge and sphere B is neutral. They are placed near each other on an insulated table. ebmu l5 0lkv.+Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. bof :fg+lt 8 ,sts5bhas g*a ,(/gqcn3 If the charges on both objects are doubled with no change in separatibn fa8qo*g +(gb :/thc3l ss5t,s gfa,on, the force between them

  Two charges are separated by a distance d and exert mutual attractive ;y3nnba)gajphf/; t::t gwsuxe8 j2) forces of F on each other. If the charges are separated bygt))wx 23 y esahat;n pj:n:g8/u; bfj a distance of d/3, what are the new mutual forces?

  Two charged objects attract eap7 bkv)1wgpzu )zvf ;8ch other with a force F. What happens to the force between them if one charge is doubled, the other chargp v8zu;)w1gk7zbvp )fe 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 deag8 os 8s0 m)/+q ykasiwp:/qistance of 1.0 m. What happens to the magnitude of thsp:q8 ago i+a)mw /s8es0qy/ke force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Whgxl8(f zij-6 gat happens to the magnitude of the force on the first electron if a second electron is placed next to the proton? -gj8fl6ig( zx

  An electron and a proton are separata6 n :* mzapost*mfe;1 ;qq6feed 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 *q;a afqseneo;16pmmfz*t :6closer to the proton?

  A point charge of +Q is /ilw c (br+i5ba g1z8vplaced at the center of a square. 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 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 trb/zv(1ia+ gilw c5b8he square?

  A point charge of +Q is placed at the centroid of an equilateral y 30k;jchvt4,kb w c.ptriangle. 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 to a third charge of +Q placed at one of the other vertices?c0h; .4 vjyw3ckb k,tp

  Which of the following is not )r lbb3uy +c3va vector?

  At twice the distance fronal 04mudwl5d6m5 o0gm a point charge, the strength of the electric field

  Is it possible to have a zero electric field value brcuz hhz h.otx 5 0*ks-/*tf: 0+,tc*rrjbitfetween a negative and positi.-rzurs ttj o* *cib5+t0* fh,/rhk0 x z:hfctve charge along the line joining the two charges?

  Is it possible to have a zero electric fielijq130+q )e6kxqw* xez kb +dad value between two positive charges along the li 6xq iq0+abq d3je)ewxk1*k z+ne joining the two charges?

  Electric field lines near psitive point ch f.7 xu5ncsq4kvr2 p/carges

  The electric field shownjmg;nwmxuw/( 5c2;g tl2 i 3uo

  Can electric field lines intersect 25bsd5tt(mgwht7-z9pmh c0 p in free space?

  A solid block of metal in electrostatic equilibrium is placedv ;1)ia4q s*kra.uh9rgl4l hi in a uniform electric field.4uilg.4avi khl* r)9rh ;s1aq Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of eqejy 7+ 2/auwrqual diameters are each given the same charge, the electric field (E) midway between the center and tye+qr 2a7j w/uhe surface is

  A cubic block of aluminum rests on a wooden table in a region where a unif:yeqkd z61s w, t w5ksyoopj.95tcq:)orm electric field is directed straightk:jzy:tw.scyds5 6to5 opq)qkw 9, 1e upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near yiqqys- ;z4g3m3-it2 lhqia4an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that k -)wumf ur68 -ffpsi5is groundedfk8)f-uw-pmu f6i5rs. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conduy/n7 c1xbc,o bctors in static equilibrium.

State Gauss's law.

  The charge carried by one ele0h;cqgq 1y/ws +lgvp e2 3leto7b;j s*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 pridim s,u9 +n)konf3k)3wpas4otons than electrons does this piece of plastic have? i9snfkpu)k,o 33a)4nmi+wd s

  What is the charge on 1 kg n3 bx 7)uhkzj*h+t wo, 2x2o*2qweejh of protons?

  An atomic nucleus has a charge of iy spn 6nbao)ky:u91ir i gi myih9fn9.; 4/8m$+40e$. 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 a+vrc.maq3 p 3eufyfw3 r55pg65v6 djmC, respectively. What is the magnitude of the electricqj cv6gv3 .uwa+ p 3r6553fad yrmfep5 force between them?

  A 1.0-C charge is 15 m from a secon3;kj,jlp qq0ulh26vm d charge, and the force between them is 1.0 N. What is the magpulj;lk2j0q qm vh3, 6nitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart ar0hgwuxmi6ma v/ g-;h3e they?

  The force between a vve:xt jlzeg d;a) +4se x9+6a$30 \; mC$ 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 )7x qzfss ysgz -k o/o+,zg62s1.0-N force. If they are moved to a new separation of 8.0 cm,)sg, x6/f -gq zs72zszs+koy o what is the electric force between them?

  Three identical point chaim4+s y6htf 3yrges 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 cmys6tmfy 3+i4h mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are prmvr * k4egc c0 4m*avgw.w;/ilaced 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 are the magnitude and direction of the electrostatic force which acts on the charge at/a*rw.k v c44wg;0 gvecrim*m the origin?

  Three point charges are located)d;7)xf n4loc4 *khy aranz0u 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-mnz7)u yoak )*r 4nlfdxc h40a;C charge?

  A point charge of +Q is placed at the center of a square, av,:h z i(h/mband a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2ahh/ (vb i,z:m.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 = 5.0 nC is sl6ti f +xgmjl5-1uv)p-7h)z i1krlp7irfe1 at (0, 0). What is the magnitude of the n-iz m6hp e5sl1pftg+)ru1jf7x l)- i71rlviket force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is v76 lka-)ae e a/p 8a xy;5itmva1pvb/at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0)./a)y/6lav pveka815 ae ;bpa v i-m7tx 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 of an equils jyqc73, fp e/ew63 +zh/s .ys0bubksateral triangle which mea+ js3yw,6.s3 f0 7zpe/y/bcshs euqbksures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges ok f/qa7o3h mly17e-yk f +Q and +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 on i flmqo1-aye/k7y3 kh 7t would be zero?

  A +3.0-C charge is at the origin and a +9.0-C c bbqgb+q,l (gk(o,p)w k6*e;ty pp2rv3ju0vo harge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the nu(r+v3kp j(tq6q;2ek,lp*)b bgbp0 wvyo o,get force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wiwan: pd( pwc k--.,xlhere can a third positive charge +q be placed so that the force on it i.ln:-d pkpicw- w(x, as zero?

  A copper penny has a mass of 3.0 g. e(sx:em5+f l 4g5hjta 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 -ikcdltx*5 9 3djl 0g ajulm55the attraction of a fixed pr tm ial0glu39k5dc x5-j*5lj doton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commonnq (l f.hy4;kt point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the thret(4.fqyln ;hkads 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 eu ial0l8*.u2 h 3psuyxlectric field at a hyp 2u0.3 alui8su*xldistance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distcary4sdvbf n95e h7 0- ghji12ance of 1.50 m fbrhg 74ahcd 5yn1-2j 0sv9efirom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magni+43ft 5d+qmun yfrm; atude of the electric field at the location of tf t mamu +nrd4;yf3+q5he test charge?

  A 5.0-C charge is 10 m from a small test charge. What is thjix: iwn+il e5tf(z12 e direction of the electric fielzl1twi :nx+ ei52 (jfid?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of theu/d6 uoidu, y5wq7zh: force experienced by a 1.0 nC charge placed a,uy/d5wu7 q ouiz:6hdt the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated 9(l,j ju kmp5xby a distance of 4.0 m. What is the electric fi kx pulm(59jj,eld 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.v 2193wxp xlxw)bub 4h0 mC charge is placed at the 50 cm mark. What isx3xw29xp l w hbv)4bu1 the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.onfl7(rj+9v 6 +etk ov0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is th(n oef6lr+ok9v7v+jt e electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 anpy f).rxlj k5cn9gm,3d x = 0.20 m. What is the magnitude of the electric field at the point mi9p kx5l3j) fr.gc,mny dway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m.u(l.qz p- 8fcrto/ m9m The last corner is occupied by a -3.0 mC charge. Find the electric field at the cenlm. 8-urtoz(c/pf m q9ter of the square.

  Consider a square which is 1.0 m on a si-aawrv+jg / (xyz ,k(ede. 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 elect+(gz/ j yx-we,ra (akvric field at the square's center?

  A force of 10 N acts on a charge wqutix3 va) c2he9x9 3of 5.0 mC when it is placed in a uniform electric field. What is the magnit eta 93qux3 cxw)i2hv9ude of this electric field?

  A particle with a charge ofiqppmsck(i7 fk344(o t/czcj/ ml 3+ )r3 mpnm 4.0 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 field of 6000 N/C*rfo8zk bu7) k pointing downward. What charge must be placed on the ball for ifzu k)rbk87o*t to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 sgrixz6 /evqi3v6o; 6 nC. The ball is placed inside a uniform electric field, and is suspended against tvzi/;gro6sv6 qei x63 he force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carrij4e3x idg25m3afm 3nk(vn8aa es a charge of +2.0 mC. What is the magnitude of tnm53nivgdaa4 e xm3a3fkj (82he electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge;hvcytl87b - j of 3.0 mC. What is the electric field 6.0 cm fro-c yjtbhv 78l;m the center of the sphere?