State the law of conservatiod:lfo+(lt: i5nl.px in of electric charge.

  Is it possible for two negative charges to attract each other?0+ v3i8 onz/aymlw0 zl

  Is it possible for a posi 7u uogrf3gq1)t).ecz vmmqy3ko+ (8rtive and a negative charge to attract each other?

  A glass rod is rubbed withyo,7jriw: x,p a piece of silk. During the process the glass rod acquires a positive charge and px,,oy wj7r:i the silk

  A proton carries a

  The model of the atom show2lpy,( niiwmydt;u1:0, m tio asxp/ 5s a

  A neutral atom always h ri.+gy19w4d6(mjr g jyv2wkb,h8iy ras

  An atom has more electrons).zurd0.:6y3mvx x, qgiesls than protons. The atom is

  Materials in which the electrons are bound very til i ;q +qllt;1if/(ywxghtly to the nuclei are referredxqq lt1iw+yilf(/;; l to as

  Materials in which the electrons are bound very looselzzsv6wxs1 q sh7wy15 7y to the nuclei and can mov hq6 vssyzsw757wz11 xe about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged meth g3h4:8ewpc,ll . 9hghe e-jcal bar. The end of the metal bjgwlh9lghh3 -:8. echpe, 4ec ar farthest from the charged rod will be charged

  Sphere A carries a net poz,nx 5 uyeqmtju+wm2*1f*o/v gy8u c.sitive charge, and sphere B is neutral. They are placed near each other on an x/m, jyzf+ucuem1u 2gonw.* vtq8 5y *insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged ro;rr0 8s0o(f nuq/.sh o rmnm*vd charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chargm uyvd2m9 .mc3ts3s1o ed glass rod. The electroyu2.1vmct3s 3so mm9dscope

  An originally neutral electroscope is ground: ov oimgpg** 0tz9rf*ed briefly while a positively charged glass rod is hif*tzm:*g9pv rg o 0o*eld near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the dq8uvow i 9b7+y1p 1xjleaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves7 v+x19 1qpbd 8jiwyuo?

  A large negatively charged object is placed on an insulated table. A neutrm y+wu t4v8oah4qp ) y6h4il.qal 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 bal4v+6twu 8i.ql)mp h4y4yh q aol touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constany.7 xun)*srp d2 :lvflt $k$, which appears in Coulomb's law?

  Two charged objects arj9.)e9*fvkw pihaxro5k95 l 5o .nsxae separated by a distance d. The first charge is larger in magnitude than the sxpw hjsxa *r55 f. k9la.v)i9o95oekn econd charge.

  Sphere A carries a net charge and 7.ptk w lr4kd rr2*q4psphere B is neutral. They are placed near each other on an insulated t7rqpklrktr 2.4 dpw* 4able. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other5o24v xjecf y, with a certain force. If the charges on both objects are doubled with no change in separation, the force between them42y ,ocjex5v f

  Two charges are separated by 3 ymnfo3:jqk juxn, -0a distance d and exert mutual attractive forces of F on each other. If the charges are,3f u3nmoyxj:k0 jq-n 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 th zwuywim)gbt-uh 6 nj- a7jc.ed92c.h7 :ahm;e force between them if one charge is doubled, the other charge is triple)2ha 96j.i -wht7aw;g7- hu.mn:ujcbemyz cdd, 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 sep5 4 l7bf4p9bcqfwk+qdu7 u2jl arated by a 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 ele5cbdf 2q9+474puwljqukbfl 7ctron?

  An electron and a proton are separa+lqzktqr : oz 623we,3ozkb 1v k3 9liootf42oted by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electro3kz btf eo2l,ok3 1z+olor tok6:v93 wq2izq4n is placed next to the proton?

  An electron and a proton are separated by a distan.+)*q csz a9/qc hi0x s03)d otdczbquce of 1.0 m. What happens to the size of the force on the proton if the electron is move.qxds hcoti*ub0sz/))q+ 3 q ac9c0dzd 0.50 m closer to the proton?

  A point charge of +Qbih5tr 5 7q3b/8xbzbc is placed 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 cth3xc5q7 rbbi b 58bz/enter. 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 triangle.3n n o5bxnllq-h0 j3yse84j5 f When a second charge of +Q is placed at one of the triangle's vertices, an elec4bj 05-eo ljhqn ny3fsx5l83n trostatic 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 zw8m-goa1czm i9)h9c2 2:sc rpf sg6wis not a vector?

  At twice the distance from a point charg prn6-git yss)ul o+);e, the strength of the electric field

  Is it possible to have a zero electric field value between a3y*ubj ;5yfij 44z dkd negative and positive charge along ;4z udd i4f35ykjy*b jthe line joining the two charges?

  Is it possible to have a zero electe5 pbkox ,.ma k/8 qh(ii5lmr5ric field value between two positive charges along the li.rl bk/5, m8o( 5ki xaqim5hepne joining the two charges?

  Electric field lines near psitivifma 8ub*n - pz)7;zpre point charges

  The electric field show1 tvvq;rxm:v0b3v9e :mbd8 kd n

  Can electric field lines intersect in fy,. y0evylrwq4c;/hce0(s/ fbcgj- np8: oxgree space?

  A solid block of metal in electrostatic equilibrium is plknnzo51yn ):(lu.gfhr 6 voi/aced in a uniform electric field. Give a statement concerning the electric fielnnr( 1of oi:gh/6 nvlyk5uz.)d in the block's interior.

  If a solid metal sphere and a egak,35e3igkz d p: dq5kd/-ohollow metal sphere of equal diameters are each given the same charge, the electric ,iqz dk k35o/dg:- deeka gp53field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wo66umh 6bqss a4oden table in a region where a uniform electric field is directed straight upward. What can be sabu m ssaq66h46id concerning the charge on the block's top surface?

  If a conductor is in eleccz)qm.7 u/ v w4jaicz7trostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hola6ii-d v7 jj9 ,5a1fkb2w(m wgzyz 3phlow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphereww3 z 62kig jibayf(m19v-,ha5z d7j p has

State three properties of conductors in static q/qulxmrv5rab,li0 v m37u1 5equilibrium.

State Gauss's law.

  The charge carried by o doe2 fba+urmpw5)f,1 ne electron 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 1)wstkb j)k 3amany more protons than electrons 1)kb w)3tjsa kdoes this piece of plastic have?

  What is the charge one,2 j0o wz0yml 1 kg of protons?

  An atomic nucleus has a charc1*x/ y)wt r( ehb;df :domm9uge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separewk mck,* 9dt9ated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectt,dek*wm 9c9 kively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force xt:q q5 w+cvu4t k9gs(between them is 1.0 N. Wh(9ugtckt 4v5sqq:w x +at is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far aparty2 berhen( utm 4axdy24k96g ;)q7e le are they?

  The force between a ge42 sz rm:q ,nqgl.wrdj85jsar23,i $30 \; mC$ 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 forcowo7; d ;6acbke. If they are moved to a new separation of 8.0 cm, what is the electric force be kaw;b;76od cotween them?

  Three identical point charisk* evv;6gn .ges of 2.0 mC are placed on the x-axis. The first charge is at the origisk*vev n;.6i gn, 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 the electrostatic force which acts on the charge at the origin?

  Three point charges are :ezgyqi5/s yk :/pu p;placed 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 direcpy5; ::/ igqyekuzps/tion of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 =vbmnnz u1 )suq/4ct k)9a-g2i 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 forcecn)au bm-v n49zkiqt/ s 2)u1g on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point ch(z05h b.kk croigkw *k;-xnx1arge 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 centergk.whxk1n oi ;zr5kx 0c-(k b*. 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.(dhskvb (8 6lw0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of th(bhv8 6d( wlkse net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3ba.6j) uxiscc0 gyl chcf 53xzo,:sy92 e/v:s = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC char0 s) fs:cz.c/6c:c xuob2x yvh 5ye sjga39il,ge?

  Three identical charges of 3.0 mC are pl1p3jn92mp psj aced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic forcs2jpp39p mj n1e which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by:g a flogv1;)p 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 egp :g) ;l1vaoflectrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin wyi0sdy0g 5dz a35eo7and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge 5a gies0dw7z yd3y50obe placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x k1knr84i kt,d8kr xvu v:zp6p 6 tm2d(= 2a. Where can a third positive charge +q be placed so that the forkvzp:2v ,4knx68tkk t8pd rdu6mr i1(ce on it is zero?

  A copper penny has a mass of 3.0 gumcmxsv 3ks+jq 1 q(;8. 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 attra e.r qwk7 yh7,sc. jh0d*svr4ection of a fixed proton some distance adk 07 hq. syrwhj7.e esc4,*rvbove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncons((lag so1xs 1edw/o.ducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart untisxos11s.d eoa / (lg(wl the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a cnlq 7: gpsje/1harge of +40e. What is the magnitude of the electric field at a distance o7ej s1:gnlqp/ f 1.0 m from the nucleus?

  What are the magnitude and direction of the electr -gtabv1i49+ jx en)lxic field at a distance of 1.50 m +vlbxi tx4aj )n9e-1g from a 50.0-nC charge?

  A 5.0-C charge is 10 m ee8e / eppy o9jg00qc5mkv5+v from a small test charge. What is the magnitude of the electric field at the location q0k08ec/m 5v +veej ppog59ye of the test charge?

  A 5.0-C charge is 10 m from a us tex7l8rqqr t;u0)) small test charge. What is the direction of the electrl)xs 0q;r tteur8u q)7ic field?

  A 5.0-C charge is 10 m from a small test charge. What is the magn qjo+fp 2-8wq:hkk gklm/7t fec4*u2uitude of the force experienced by a -2u*lm2 e8q/fhqkc:g+ j7u4f twopkk 1.0 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 6:wsqfvz i3t -a distance of 4.0 m. What is the electric field at a point 6 tv wifsz:3-qmidway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a ; 6-keyapv-cy 0t:zhq-4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30a- h 6:pckqeytv0-z;y cm mark?

  A 5.0-mC charge is plac* sambxa 4pkte5y :d*5ed 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 charged5 *5s pabk:yam *tex4s is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placej1v1h7qfpoc 27nos; z ka- xpg6y.jc+d at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between 7-.h7pg jo ;+ c6 saxocvqny f2jkz11pthem?

  Three 3.0 mC charges are at the three corners o5 eaappp7+lu rse rvvc /7/(f3j m,v3uf a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the ,p/ c7vra(ev +lajum5 e u/f3v7r3sppcenter of the square.

  Consider a square which is 1.0 m on a side. Charges are jrej9)bluhx5,yn 9auhv 2-b3 placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at 3eyhhr9v5,ublxn -a ub92j )j (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 7:xjbwoujw:2 on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude o2j w:j:xw7u bof this electric field?

  A particle with a charge of 4.0 mC has a masv: p/g(hzyv ;,qv xfx,s 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 f*-u5yu3yn hdb rkfc0ws; b* c.ield of 6000 N/C pointing downward. What charge must be placed on the ball fordwy.ncc rsuy*f3- k 5 ;h*u0bb it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The 4ijnr6uwm18 v ball is placed inside a uniform electric field, and is suspended against6 nuw4v1rj8 mi 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. Whacncr c8ugtp x85 r2e)9t is the magnitude of the electric5t ep)uxcgc29r8nc 8r field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elecdp.wvc8u5 t82rsn b9xtric field 6.0 cm from the center ubc w8 r2.n8spd9 vtx5of the sphere?