State the law of conservation of electric chargeh,h lwp6*jjw11iwv6 2 yvtqo 3.

  Is it possible for two negative char/imkrlvo c1j(w1+ uo 4+q(k v //8yikfekv*xeges to attract each other?

  Is it possible for a positive and a negative charge to attract eaca1*uvx 64rn**k /qplrqb:e 6ly,tp yoh other?

  A glass rod is rubbed with a piece of silk. During the proces va cs*fz-/cf.hdv7;ts the glass rod acquir*csvfd ;fc .-/hv atz7es a positive charge and the silk

  A proton carries a

  The model of the atom f:s+kb(*n 63lh zbroushows a

  A neutral atom always hasu lh6cnk:g 3bwcd6. k1

  An atom has more electro27q pcqm1yzmfi+7ky0ns than protons. The atom is

  Materials in which the electrons are bound very ti7x3fvo5n5att ; :7pqeu j:ajvghtly to the nuclei are referronj7:e ; 3u5v :aavjxp 7qt5tfed to as

  Materials in which the electrons are bound very loosek2dnhxq 3g o.3ly to the nuclei and can move about freely within the material hgn.2q3dox k3 are referred to as

  A negatively charged rod is brought near one end of an un vy-4 pj g-vhayaco9dt ;9hs.-charged metal bar. The end of the 9h.gc av-s;tvjpyd y-ah4 -9ometal bar farthest from the charged rod will be charged

  Sphere A carries a net posiwd (g *w4uk/+n su p10*dmjsoetive charge, and sphere B is neutral. They are placeow+0guk sj dn pdm*4e*w1us(/ d near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively ct p,j* zs 8l42uv4uxasharged rod charge an electroscope positively?

  An originally neutral electroscope is briefl9 8rb rbjs + j*tjxjfun1/jt)z4i8m j*y touched with a positively charged glass rod. The electroscopej)jbi8 tjmxn* r*/jjjz+498 1rbutfs

  An originally neutral electroscope is grounded briefly while a positively chu za9v5m13on4df zkw0arged glass rod is held near it. Aft 43uw1 zaz90 kvnm5ofder the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separat4fqki 1i1* vvne. Then a negative object is brought near the electroscope, but does not touch it. What hq1kv ivi*1fn 4appens to the leaves?

  A large negatively charged object is placed on an insulated9q c0v6wqu f/u 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 u v9q0q 6/ucfwrolls forward, but 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 Cod7y)vkf l uqe 7c;w(4hulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is laganu-b0wcw* 4 e(+n gurger in magnitu *-ugu+ bn(04ewgcanw de than the second charge.

  Sphere A carries a net 3bm7 1u-8g9sfnr 0qze,qqtg s charge and sphere B is neutral. They are placed near each other 83 g 97tmqu-z0fssqrn,1bgeq on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each otdyy*e1 *; n:/t)z+j mna3 dmadcvai2np at9u)her with a certain force. If the charges on both objecnd3au/:a 9ant)d 2*tp*av ;y+m i mjnedy)cz1ts are doubled with no change in separation, the force between them

  Two charges are separated by a dij mynn vxvnt.q8b669m7 l2 m d07ah5qistance d and exert mutual attractive forces of F on each other. If the charges are separated by a distad6ami h8vl7 j0yb657n.m92nqxqt mnvnce of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the8uaw-rnq d6p3rwcwo 6ba) 31 o force between them if one charge is doubled, the other charge is tw8duapwq6n 313)o abr roc-6w ripled, 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 b n8eys8lp :-)0w omap2 tq4sody a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is place0 :-syedosma ot2n8lw q) 48ppd next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hapi2 egf)ku- v8ipens to the magnitude of the force on the first electron if a second electron is placed next vk82-ge) fiiuto the proton?

  An electron and a proton are s-r b6 ek8sw(ox1ejerk li-c8;eparated 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 -(-o bek18 k6lrij8x se c;wrethe proton?

  A point charge of +Q) 3g( af ndhm +*wp6rnyj,v)nb 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 electrostati )6r a ),*+(ywnpbgnd3hjm fvnc 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 centroid of an e 3;68/ c /w g dilsvy/fnf*fagp bufkz))g-l:equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acgng )fvuw -lfybg* c / 3/)8:kf lip;zf/dea6sts 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 a vec c/jwljvv,9cn(ii0 * ctor?

  At twice the distancsm*vcq4c y v6(lb,h7p uu / 0(y/mglbhe from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value qr7o,fvu oi68asn i0 0between a negative and positivu0va f07iri 8sq,no6 oe charge along the line joining the two charges?

  Is it possible to have a zero electric field:,yqe x:z:fcrle ej,10fus :s value between two positive charges along th re :se q :l:jzyu:,,x1fs0fcee line joining the two charges?

  Electric field lines nearml*ezdmzk b6w8.n9 0q psitive point charges

  The electric field shown 8lr jg f2v8plncb1p:2

  Can electric field lines3p dtt(3k-iq) tinme7 intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed v+9d7xbgcxn/oi:/y 0lx z2q x in a uniform electric field. Give a statement concerning the ele+xz/0n xlv b 7cxx/2do:gyqi 9ctric field in the block's interior.

  If a solid metal sphere and a hollow , 54epyhdteq+ metal sphere of equal diameters are each given the same charge, the electric field (E) midway between thedyqep+4 5th,e center and the surface is

  A cubic block of aluminum rests on a wooden table in a reg ; xhm.*sx:ie,c.psku ion where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's,x . ku:pi*esh.mxc;s top surface?

  If a conductor is in electrostatic equilibrium near an*+g2 f)x j1 yxb1yaof1czk l;z electric charge

  A positive point charge is enclosed in a hollow metallic sphere th(k ga+;llbpc lt 5g;b(at is grounded. As compared to the case without the hollow sphere, the e+gl5; bkc(tl(l;bp aglectric field at a point directly above the hollow sphere has

State three properties of conductors in static eq12xjn zehjr 5;*,lgco uilibrium.

State Gauss's law.

  The charge carried by ogy-jtfmp,v*)n5eln r4 x1; 6o q j3xdjne 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 nebu3,5)ht p.amn:y b5a0sycwtt charge of +2.00 mC. How many more protons than electrons does th5y 3 h ,.twtunay5b)sm0ap:c bis piece of plastic have?

  What is the charge on 1 z ywjk -)k/ua(wi.z. i)j6xbzkg of protons?

  An atomic nucleus has a charge ovlxz kmhm.d6 ur(x201f $+40e$. 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 a f+a *syuvp mfu:cp9*r3 9ub2 vgk7r9vnd -4.0 mC, respectively. What is the magnitude of the electric force between the+f 2vu:vpcgums up9 3fk*b* 7rr yv9a9m?

  A 1.0-C charge is 15 m .ik 4zk.kd7::a;iwwtvz;jke from a second charge, and the force between them is 1.0 N. What is the magnitude of the second charge?k7t v j e;;w.z:.az:kdi k4ikw

  Two 1.0-C charges have a force between them of 1.0 N. How fard8npc7byy ve pq* 4-++.lbztz apart are they?

  The force between a a) xx,raol 4zmi3i(yn x )7rb4irbf18$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, inig,(m 38vswjmy;hk*l ou- q fe3tially 2.0 cm apart, experience a 1.0-N force. If they are mov w gv(8-hskyu3jq*lo3,m f em;ed 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-axizdobtev f4:.f47i es6s. The first charge is at the origin, the sebtds.fv67 e o4fi:4 zecond 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 e8ti ni 2ur -ztej7h:k27r:geon 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 e8iiutz:j rt n77e -rg2 ke2h:force which acts on the charge at the origin?

  Three point charges are located at the following positions: Qx 8jc3,yuo r(d( qahw:1 = 2.00 mC at x = 1.00 m; Q2 = 3a( q8cxhw,d:oy3( rj u.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-mC charge?

  A point charge of +Q is placed at the center of a squa7t0 bzcbv;qe:4 ymmt ,re, and a second 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 acts on the center charge if a third charge e0 zmcm7bqt:b y;v4t,of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, o1 m7+jlg czuut, so3sdqd)t-:ad7*i 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the n1udg *-u7 mstdliqdto z)j +a,37cos:et force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 3v710ty+ )8vd lrm dnfaphb7a 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on thdt 3r)l10vpfn dv+7 bam7 yah8e 5.0 nC charge?

  Three identical charges of8 q/wu-yq7*.8a eclhkhp z dzxjn/4-b 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What qjqay /x8lczwe d-nhh-.47 /zub8*pk is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Qx 37mrsi8 k dz:,ustdqd58dq, , 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 zr sq :m3q ddu,i8,5dkdtxs78electrostatic force acting on it would be zero?

  A +3.0-C charge is a8 mp:ck wlc ;d.x/1ybut the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third ylkduc.xbw1c :8m/;p charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at9d3u,.8 )yad) oxjpcmqjiss+ x = 2a. Where can a third positiveo9md)q+a3ps dscx)u .8,y ijj charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.c;rbdn g3ql,tb:o 96 vo+9tml0 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 up against the force of gravity by the attraction of a fixedg7ie v*+7- sjgnuts+k/d.bjl+ k-ihu proton some distance above it. How farvs+7l /skutdj+juki nh*- +eb ig. g-7 above the electron is the proton?

  Two 0.20-g metal sphereb04.jrzyai kdt:64 t zs are hung from a common 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 thy 0t r:ib.kzdtj644zae threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the mg afi0u)ml9 on),k0lotuqky9 c9)7gs agnitude of the electric field at a distance of 1.0 m from the nucl k u 7kclyn)m9af)oq),9u0gsil 9o t0geus?

  What are the magnitude and direction of l2pc9 7+sihicb2r l2h the electric field at a distance of 1.50 m f 2srll i7h9pic+b2hc2rom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magn x bss-9/ixfs2itude of the electric fie 2- ssf9bx/isxld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directioi xfc-d3 qlnlbb)1,:i2xhx ,dn of the elen)qxhxbiic ,dx-l 1,l:d 2 3fbctric field?

  A 5.0-C charge is 10 m from a small test7d 95pg7ek:wekead -q charge. What is the magnitude of the force experienced by a 1.0 nC ed e5:e7-kpw7 9 aqgkdcharge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a dis8tpgnmb g:ew;u0 )wcm8 6gh7stance of 4.0 m. What is the electric field at a point midway between the two chargwgwc0semp : ht8;gg8 6)n7bumes?

  A 5.0-mC charge is placed at the 0 cm mark a8hjc,;u6rpy( l7w; luf pjd3of a meter stick and a -4.0 mC charge is placed at c7dlr8 u;w,plhj(u; a f3ypj6the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm m4/j)kd2a /cbic2mz b mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point 4 / amdbzj/kbc mi2)2con 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 x = 0 and x = 0.20 m. Wy3++ xlkj9xa pt9;ix xhat is the magnitude of the electric field at the point9xlx+ x;ik y+39jpaxt midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m.,i)xic d v: dywvbt8i1rh(u29 The last corner is occupied by a -3.0 mC charge. Find the electrvc vx:i u1 btrdy8,) i29i(hdwic field at the center of the square.

  Consider a square whmv0o +qkwn gmg.74fh*p-dbq :ich is 1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mCb.vwk:+ mhmp 4o n-*7g0qdqgf 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 actsk969n naak zr, on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of thiknn,69kraz a9s electric field?

  A particle with a charge of 4.0 mC has /8/ 6vncx7)kihg ka9k t,lzsaa 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 6000nb5zxm;vdu9 nvw : 3h0 N/C pointing downward. What charge must be placed on ;h0 vx z m35dwnv9n:buthe ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The b+xlyg.lhzm)vf 3c)+dt w gkfv)h h jo)4 k66s*all is placed inside a uniform electric field, and is suspended a gyh4 )v*flj wcz63hm+kxt ))govs6fk).l d h+gainst the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radiusqjxwfmp09i0jj o65 n. 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere'sq ijo0x0 .jfpmjwn659 surface?

  A metal sphere of radius 2.0 cm carries a ch q p,iin 80h6r1j3btb.,tqgqzarge of 3.0 mC. What is the electric field 6.0 cm from the center of the spn80.z,jq 6qb g b3p1 itirtq,hhere?