State the law of conser3hq rxh 20xfk):t6 mgtvation of electric charge.

  Is it possible for two negati8fakqa*y3q3ku- . tip c3+oe xaj k7k;ve charges to attract each other?

  Is it possible for a positive and a negative charge to attract each othhpxs.v6 98xrxvjca la5t3l y):.zf;mer?

  A glass rod is rubbed with a piece of siljq jn,5+ lu)ad+vu j8sk. During the process the glass rod acquires a positive charge and the nj)+d8+5jvl u,uqsaj silk

  A proton carries a

  The model of the ato9vd/ev()orqa2d z 6 ydm shows a

  A neutral atom alwaykpd sdubc s, 3k:)5ya,;xwc4ss has

  An atom has more electrons than protons. The atom ivb7jgvpj 039yt 5-vq2p*c vmus

  Materials in which the electrons are bound very tightly to the nuclei are r:wc0qm3qki q*ot/-q+r .aeb k wq 3*cqeferred to kw3cq* o.q-r 3/qq:wc ib eqq*mtk 0+aas

  Materials in which the electrons are bound9m 5lzkl3dqrk))u em,f1x8 ba very loosely to the nuclei and can move about freelyuqr k)dk 5x18flam,3 ) eml9zb within the material are referred to as

  A negatively charged rod is brought near one end of an u, :ewe:lo ef*.yqzri0 ncharged metal bar. The end of the metal bar farthest from the ch.eoqz0rie*:f :,lw e yarged rod will be charged

  Sphere A carries a net positive charge, and sphere B is negql+)nxtp137qm- nlb h7jv t0utral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wqpl-n )mlv+3 t1 xh7qtj7g0 nbire that is grounded. Which statement is correct?

  How can a negatively charged rod chargesf8qyesnizl 07;r azc3u.i260 2y nhw an electroscope positively?

  An originally neutral electroscol9v.;it w/ guneo :.sepe is briefly touched with a positively charged glass rod. The electroscopeu;. glt ovsw.9n: ie/e

  An originally neutral electrosc .z a6eg0e/qwb3r 5 (e 7jn.laitvvn6fope is grounded briefly while a positively charged glass rod is held zn..ej (/ bevq0r7 tnwgf6l5aev3ai 6 near it. After the glass rod is removed, the electroscope

  A positive object to9 vi,ljto1v(peth1 *j. nlwm.uches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but dw11volpm9vi .hj j*( ,ten.ltoes not touch it. What happens to the leaves?

  A large negatively charged object 3 b (*ztkk 4ql*brri1uis 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 bal*4q1r(kkzi blburt* 3 l touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coui;kina ) o6ilfn9:)kl lomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated r+jzq+/e .cdpby a distance d. The first charge is larger in magnitude than the +/e zpqrjd+c. second charge.

  Sphere A carries a nkzahkatb73f o3 )us ,5et charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best 35o h t,7szkb)afauk3 describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chdsl zpe...sc (arges on both objects are doubled with no change in separation, the force betw. cs.z (.dspleeen them

  Two charges are separated by a distance d and exedd0 o3w6 ecw. d1wl6j7atqpf1 rt mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual fow1dc1qoeaw6pdt063 7 .wldj f rces?

  Two charged objects attract each other with a force /hzc tq0(-omve-ta*dF. 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? Thc/o(hmea d- qz0t*v-te force is now equal to

  An electron and a proton are separated by a distance o:az) 6-tx bcqbf 1.0 m. What happens to the magnitude of the force on the proton if a second electrob)q-ct z:bax 6n is placed next to the first electron?

  An electron and a proton are separated by a ei ,1gwf g6l3idistance of 1.0 m. What happens to the magnitude of the l,g6we31fig iforce on the first electron if a second electron is placed next to the proton?

  An electron and a pro s;jgb8usvb6bmpa,5ox 4j hf) bj +8y;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 tj5b;oh+a);x,vy4 bu8gsjfbp s6bj8m o the proton?

  A point charge of +Q is placed at the center of fxba . 13ng3vca 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 -c3xga .b 1f3vnQ 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 triangi3+hyz4hx u c4le. When a second charge of +Q is placed at 3h+4icx hu 4yzone 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?

  Which of the following is not p41zy.jzmm1 rbm 0 t(da vector?

  At twice the distance from a point charge, the strength of the electric an-.(csh h2z ifield

  Is it possible to have a zero electric field val/bzx9e up: ng v * .,b9*yxi1f.iqljpnue between a negative and positive charge along vi: *, l neuz9pn1yxj/xbpfbi..9qg*the line joining the two charges?

  Is it possible to have a zero electric field value be5xb49 thts8w s0pbb x6tween two positive charges along the line jois6 b8x0tp5tsbhw x4b 9ning the two charges?

  Electric field lines near psitive poinj5 )4m3,bv g yzhjmz1bt charges

  The electric field shown uh- 1hjps0d(tzg*dxb+ (sm c9

  Can electric field linemh ),f k) 1x+-(xc njr)tbwdzcs intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform eluzzw 8nrgf1-w 7ri55fk1 ym3fectric field. Give a statement concerning the electric field in the f i3y-krz8u5wfr1 n1w 7fg5m zblock's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters .: h muksf(n*2iazs ,gare each given the same charge, the elecf, k :*a2inmsz(hsu. gtric field (E) midway between the center and the surface is

  A cubic block of aluminum reste ,h)hao((ct:cl k4q bs on a wooden table in a region where a uniform electric field is dire tlo( ahk:e()b,h c4qccted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equio m/a7 9w)3frv .dsjvelibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that-f:z9i4p(luq1bcu m r is grounded. As c- (pqu:r4cbizl9uf m1ompared 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 equil e*,hiluc3 pp)ibrium.

State Gauss's law.

  The charge carried by one electron i-0ylu;gm bqp2 zw iq)1s $e = -1.6 \times 10^{-19} \; C$. 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 protonpm12, kdqbz-ws than elec,p1dk 2bz mwq-trons does this piece of plastic have?

  What is the charge on 1 kg of p)uv2yy7c 1wm urotons?

  An atomic nucleus haiqcq6 kr-l.,6 b)0+ kxxxfr wxs 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 mp 8 ckh5qn2s:kC, respectively. What is the magnitude of the s5kckp: 28qhn electric force between them?

  A 1.0-C charge is 15 m from a second charge, and ;k u+7zw jfv-9tt7vekthe force between them is 1.0 N. What is the magnitude of the secj-tzk+ tvu;9w 7kve7f ond charge?

  Two 1.0-C charges have a force between them of 1.0 N. How fa;4 )iy3lzvxi7u -aakpr apart are they?

  The force between a rxpr)o9u* 5 hu$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, ini8o8dl:k .v5 1lmt0fjm+ rsqw ttially 2.0 cm apart, experience a 1.0-N force. If they are moved to rlq:t f. j8+k1dot l0mv5sw m8a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of jm r548q n *bdr4oeu35 gky.)tie* njr2.0 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 th.tey4jkm5 i*r)*rj8n qegu rb 3nd4o5e 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 plm2)h qn uv9z/ba,ul0w aced 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 maqua,u/n )h9 m0l vwz2bgnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges ar + d: gjdnlbt(k0vj(qc.n *p;xe located 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 3.0*tn djc0n(pk :.v+; lqd(gxbj 0-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point czb 3tdmau3 mb g.3 zc,8k4xg7charge of -Q is placed at the upper-left corner. It is observedb ,3 tmd3z ug4c37xzgmk.8ac b 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 lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC i.mw8ou 8 ttm7ms at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the nemttow u8m78. mt force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 =r85iitax2 /.,vn5 mv myy)u kp -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.rx2, niv.kyy8pa iv)/5m5u mt0 nC charge?

  Three identical charges of 3.0 mC are placno5rar4 h52,bfuyn 9n ed at the vertices of an equilateral triangnnf ry ,r5b95o24unh ale 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, whic14.eg1vwx es(ysa q q l-.fi7vmd2w(ih are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge ..salq1v(d2(- yie x1m 74iwvfw qeg sof -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 n lf2sdhh/(v*9t 1 pvs3v ,mhiat x = 4.0 m. Where on the x-axis can a third charge be placed so the net thh/ (s3nhi9,l1*vm2 vfsvpdforce on it is zero?

  Charge +2q is placed ae-t od;x)jk o;t the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so j )odxt;-ke o;that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of 9mwf,7.la8ng prs 83ehohr4 z$4.0 \times 10^{12} \; electrons$ 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 attractionj4ke2nmdq -5b of a fixed proton some distance above it. How far above the elect2m b4q- k5ndejron is the proton?

  Two 0.20-g metal spheres are hung from a common point by *dke1+nkywpnct t05q 3d t 2*hnonconducting threads which are 30 cm long. Both are given identical t5 nc*0q*2wn ek3tpktd h+dy1charges, 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 tlpzc,4t+x)b u .0igkthe magnitude of the electric field at a distance of 1.0 m fromibct. 0l+g,pkx4z)t u the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1ukacw+-fp owtd 4 ,8z3.50 m from a 50.0-nC charge?fdwuz, 3o w-tc +p84ka

  A 5.0-C charge is 10 m from a y;1 k yk pls+ojj,(3kjsmall test charge. What is the magnitude of the electric field at the location of the test chargkp sk3;+jlj( o yjk,y1e?

  A 5.0-C charge is 10 m from a small teiu kng.(3kf n6lzyz.9st charge. What is the direction of the electric fn 3gfz.k (9.6zynulk iield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of qsag2a7ifel-/ l;)om q7lqp )the force experienced by a 1.0 nC charge placed at the location of the test chari;qqpqls mg7 oefl )-)la2a/ 7ge?

  Two point charges each have a value of 3.0 C and are separated by a dy;*6:d1:c lrywyowf s.iv ahgbl- 9e1istance of 4.0 m. What is the electric field at a point midway v1*icr:;deoygyhlw.fal6 bs1 y 9 w:- between the two charges?

  A 5.0-mC charge is placed at the 0 cm 7 x ldqmaz -nr;ewv97-mark of a meter stick and a -4.0 mC charge is placed at than 9xze7vl-;r-q 7wmde 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mt(pu e0x0+pg o6m4a ffark 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 char0xoe 0f4tmfu6a pg +p(ges 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 r+d ltm1j*a:pa y q0*jm. What is the magnitut0q m*yja :p*1jl+radde of the electric field at the point midway between them?

  Three 3.0 mC charges 6j+evyniwvft gl91 9-6goq5kare at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC chargege6 gljfvkyq9t- v+i 5n o91w6. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the cornersvkco qt1u008 *d fyep16 chv(q of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1(vt 8c*qdqy 6011fpkeov uh0c, 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 a0-x,x7y xhy.z ogb8 e9kf5yca charge of 5.0 mC when it is placed in a uniform electric field. What is 5 k, o. yhx0yg7xx9ze8cfa-yb the magnitude of this electric field?

  A particle with a charge of 1vc)s.0 k4a myiw9sny4.0 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 fiel,bshtz p t:-:nd of 6000 N/C pointing downward. What charg-:sn : zpttb,he must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.0oyrf2rq ;iq 190 nC. The ball is placed inside a uniform electric field, and is suspended against the forc2if rq1 y;o9qre of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carr,ufp; 9y+jke/w a. eq cveqm19ies a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the spp ,ejkqw qyu+a 1f;9em/9v .echere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. 02 knhw, o:i0p.agjz mWhat is the electric field 6.0 ,i0 pz20aw hmno:jkg.cm from the center of the sphere?