State the law of conservatiiat lv8og7r 4ju,fz(5on of electric charge.

  Is it possible for two q*mxkjxdemp9bmi mf6: a:09. negative charges to attract each other?

  Is it possible for a positiv/sjdt14 2akyx e and a negative charge to attract each other?

  A glass rod is rubbed k)5j+oht1 v fzwith a piece of silk. During the process the glass rod acquires a positiveto)f1zk+5hj v charge and the silk

  A proton carries a

  The model of the atom shows af-;w. jslm;7v lpu5ij

  A neutral atom alwaysq8l/q;ak l 2mh4jelm- has

  An atom has more electrons than protonsd7nhqrto12 os 5*4wg f. The atom is

  Materials in which the electrons are bound very tightly to th//le(nj b-bfxd(qlmb t0z;8w e nuclei are referred to a-xjebl8/qmfwn dt;(lb /bz( 0s

  Materials in which the electrons are bound very loosely to the nucl zd 8v6ce3 3r8ykn )*+djpzphvei and can move about freely within the material are revr)h*pz83 8z epj+c3yd6 dk vnferred to as

  A negatively charged rod is brought near one end of an uncharged meta yqbvb3 faa*44l bar. The enyq b34b*av af4d of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive cha (h ygpt9 d7u5ex ge5+e(ex71oau 7*ozowgl)brge, and sphere B is neutral. They are placed near each ot hx(7 5oug)d57eo1tg( xee7w+ubo9 ezg a*ylpher 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 charg:w(cosnzr -mwug xs+*( ke z20yli 1nw2i8b w1e an electroscope positively?

  An originally neutral electroscope is briefly touched with a positzt4g dg3 5,m yg*yx+zuively charged glass rod. The electrosz *y3d uxggz5y+g,m4tcope

  An originally neutral electroscope is grounded b-n/h84v- (n *ajy qufs4pw vamb4ski;riefly while a positively charged glass rod is held near it. Aftermpju vvnf*-4(/k4nhbiw;- sqs4aay8 the glass rod is removed, the electroscope

  A positive object touches aep lz 2dhp.3edj2-4nnwwq f*( neutral electroscope, and the leaves separate. Then a negative objectn 42whz*qdnp l(. -ewp3jf2 ed is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on anfg5x)wdi3 h7y 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, but5x3h7ig wd)yf 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 the 4 hp 3mu5rq jmo.-n8piCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are se9eg20v ylolk igmde092hd *2uy 9yv9o parated by a distance d. The first charge is larger in magnitude than the seconu e yioyl2yl 92vdg09e g9m0o9vh2kd* d charge.

  Sphere A carries a net charge and sphere B is neutrau((w* x8 -syn6 -ec xubvqwfe6ow ,y-tl. They are placed near each other on an insuyty-q(cn6e-b6 ufx(ww ewux ,*o-s 8vlated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract eac ; f3h/fw9wfnfh other with a certain force. If the charges on both objecthf39n / ;wfffws are doubled with no change in separation, the force between them

  Two charges are separated by a distance dgsx 1p remk z 0 lqs),s13*en++fptu3n and exert mutual attractive forces of F on each o1,s*3+qzxmnp ktp 0+s31s reefg)l unther. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract ea0mbmsyvb*/a(yrns y7xe + 9 )ach other 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 fo0ran/yb) v+7(ssmey mx9*a y brce is now equal to

  An electron and a protojl , qklys 3qiis9f9+9n are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed ne+9 sy,qfsl3qjili9k 9 xt to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens to/ki .ky37vj t 4:ipqto the m jk:ivp7.tt43 yi/ koqagnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separaqubk;5uaec: 0e * elb3ted by a distance of 1.0 m. What happens to the k*ba0:u; elu5c eb3q esize of 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 square. Wscsw54 )u s;hpk(wvj /hen a second point charge of -Q is placed at one of the square's cws)kh4/ c(v5s;wjp su orners, 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 the square?

  A point charge of +Q is placed at the :a.u :rbvlx b+centroid of an equilateral triangle. When a second charge of +Q l: rvabbx: .+uis 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?

  Which of the following is notfd , +,wcx5cxk a vector?

  At twice the distance from a q ta wmmiaz;)bsu9-13 point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negatoj vcge ..4p vdseuv-3 cj9 280epe/egive and positive charge along the lineu dcvev s.e3j .g8/vpe2094 -jecgoep joining the two charges?

  Is it possible to have a zero electric field value between two positive cyd3ai8n gk*j/:e4 dn4g5 mrwq harges along the line joining the dyer34i *m:gnq8 kja/ n wd45gtwo charges?

  Electric field lines near psitive point charzwf. 98k,ut 3pva)tht ges

  The electric field shown grhe(ft8,5e4( x xmtf6ppw,y

  Can electric field lines intersect in fred-bp5h3:phy1917dfbyvjdw;9cwae g e space?

  A solid block of metal in electrostatic equil fpf6ll o9da0 7scr8s(pn-l gaho6(9 eibrium is placed in a uniform electric field.e o0s6gsa l9ap(f d lf7 98-lr6pocn(h Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a 1tkboe5xu,s / hollow metal sphere of equal diameters are each givt/okb,s1 uex 5en the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of alumd7rny72e 1zf0vrz y*r inum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the chyz 2e7r7z1vd nrfr*0 yarge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electw, v up7n*5+dog pu(phric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grfn h/-4ddo2ed bi9 1y8inus4pounded. As compared to the case without the hollow sphere, the electric field at a point direci2nih e48f/db4opny 1 dd-u s9tly above the hollow sphere has

State three properties of conductors in static equi;joi4 (w*fed .w;rvwm h+za j,8w xi1plibrium.

State Gauss's law.

  The charge carried by one u v;jf7q(wz,u 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 many more protons than el a);c3d-yprv aectrons does this;-vpa ra3 dyc) piece of plastic have?

  What is the charge on 1 kg of protons0uo8fj ta(yl 3kj11p :x 8ytjw?

  An atomic nucleus has a4c izb9d9a hf/ 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 2.0uw7qj* y .o:qx and -4.0 mC, respectively. What is the magnitudeuwjqo. y7xq :* of the electric force between them?

  A 1.0-C charge is 15 m from a second chargevna em7ii)4 ,h, and the force between them is 1.0 N. What is the magnitude h vei,ian 74m)of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apvdp-yi 6a /md7m8oko -art are they?

  The force between a qt l(kzvk0fo6np(m 59 $30 \; mC$ 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. .grcfp:2 9( qvcnd )sk If they are mopcnqv: sg.cr)2k9 d f(ved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The l.( r*l kryfh8ki1qje wou(y/xy 9g8 *first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. Whatxklyh ej8uwgf*q*.ryr/y( i1l(98 ok are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are p.k mjcr2*f 8jv30z gfwio*r5placed 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 cf wjz3 5*r pvfi mgko*02j.cr8harge at the origin?

  Three point charges are located at the following positions: Q1 = 2k8 6c1g /rji7zhyp(qv .00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.0jz( /ikc8y7 rq1vhp6g0 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a sec torwh5wqi ,75ond point 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 w5hrqw5io ,7 tacts 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 67aj d n)xz1j+w 3 q:4vwo6gfxfnhyi3, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whad1)6axoj f3+:w jf6hwyqx4ing3n v 7zt is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Qd6 m42*4ecgpsbx b*le 2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). *4m 4sp*becg be6dx2l 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 equ( ye(h( y8mhtmilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charg(8m hhyet(y (mes?

  Consider point charges of +Q and +4Q, which are hz tacyu; cj/3e7um9w l1tr*9 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 it ;uw e*luaychz/j9ttcm1 3 r79would be zero?

  A +3.0-C charge is at the ormrj .ji(hjm0t1lxm;z3(r x+ yigin and a +9.0-C charge is at x = 4.0 m. Where on the x-mr1h tj0(l(xz.jy +3xrm;imjaxis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and2 u,w*cbhnb, r charge -q is placed at x = 2a. Where can a third positive charg rwb2,hbcn,u* e +q be placed so that the force on it is zero?

  A copper penny has a mass of 3. 3fb/ gto *0yuzz ;7z7qp*upvj0 g. 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 tt2z+6l qle+mup against the force of gravity by the attraction of a fixed proton some distance ab+zl t2 mt+qe6love it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung nf mgh*2e x:ore2u .e1from a common point by nonconducting threads which ah2 eg.:one r2fxu me*1re 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 magnitude zi x u6yb75ir2of the electric field at a distance of 1.0ri6 52 zxu7iby m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1*.oyyeke8i 3,c 6 wujs.50 m from a 50.0-nC .kysc6jiyu e,*8e w 3ocharge?

  A 5.0-C charge is 10 m from a small test charge. Wn7mrs9 -zn i;mhat is the magnitude of the electric fields-i n9nmm7;r z at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the z;lju 5: pkn bzv81tuxa:z0e,direction of the electric field?u18 :z0ulk:; vt, azxnjpe5 bz

  A 5.0-C charge is 10 m from a small test charge. W kltl85a4ydl 4hat is the magnitude of the force experienced by a 1.0 nCy ll5l84k4adt charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and a i ukfgyi 6+tk97msj1m fsoo(, *icp9.re separated by a distance of 4.0 m. What is the elec7t 6i(f*igu9imc fpkmsoj+.y1,o s9k tric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a mdaro 36ikt4x z:r*knqo5 2 q+ieter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 3564t kzqr q2 +i*rxnaik:do3o0 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chargebrql+u tp7f*5 is placed at the 50 cm mark. At what poin* fbu57ltq+pr t on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 4avzw,xzji0u u8e(v)0/ kd3pj 3kj qw mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between thp3u3 zza,qvjk)04jxkwe /d0 8uvji w(em?

  Three 3.0 mC charges z4o.1t rfd/ vxgubin- mku43 9are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of thenv-mkxud 1 g3t/ foz94ri4u.b square.

  Consider a square which is 1.0 m on+i es;7mg xa:yijri *:knmna9 t7mo6 7 vkga95 a side. Charges are placed at the corners of the square as fka :5 sioj g y*796vei:7xnkta 7+rmia;ng9mmollows: +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 square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a unifo :k.x9r6k 7no+,g zzi c,uamphrm electric field. What is the magnitude oigo.ac kp,6zn+x h,rmz:79kuf this electric field?

  A particle with a charge of 4.0 m3e r2e5 0b+;ofx 7o3omo*yj *5z tq0d rkzezwzC 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 isvc+ 01 u/h soo7e*ga4hpi :gzlkzp/ /f placed in an electric field of 6000 N/C pointing downward. What charge mush k:1 4 0g*/vpa husz7pofo+gize//lct be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chaqbb .+h3z)al) u3-qb jzuo:iarge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of grav3h bz ab3z)baou+-jq)ql .:ui ity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a gctu/a (kal2 oewgr ) dog9;+ ;a3 x8mw8/bvcvcharge of +2.0 mC. What is the magnitude of the electric fielv8ctx (o ao/re)g23 ;a/vwd+kglc9g8ba uw;m d 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.ulhyw qh.0a)atb1,ug)p ,;b e0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the cente0ul1 .)py);t b,,ah wgbuhqear of the sphere?