State the law of conservation of electric chax7p ywclrpn s(, d0-g-oz8 .zfrge.

  Is it possible for two negative chavh.ofpz - wc97rges to attract each other?

  Is it possible for a positive and a homyeak t a8o vkd3p )80w9lr2x).w;knegative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the proces2e yxj9rb/tmh/jq : (i dkf,j4s the glass rod acquiryjrk4,dqxf( ib j:t92hj// emes a positive charge and the silk

  A proton carries a

  The model of the atom shows a,z8qfc 0o -uz*ue9g ih

  A neutral atom always havo2ix4x;mpw:w+tr y/e :dw3 svh() sp s

  An atom has more electrons than protons. The ( ynwiie2srbnuy46;fp 2:b+batom is

  Materials in which the electrons are bound very tightly to the nuclei aun unytz1q er;z0f9*oky8 z12re referred to aszyuu; f9t8or0kze1z12*ny q n

  Materials in which the electrons aey w+6eh5gb0(twpjq) * ,pmi are bound very loosely to the nuclei and can move about freely within the material are refbp gyjp 0m)eeiw6 *wqt5,ha+ (erred to as

  A negatively charged rod is broubhyh7(ko w6)i ght near one end of an uncharged metal bar. The end of the metal bar farthest from the chah yk76(ioh wb)rged rod will be charged

  Sphere A carries a net positive charge, and sphere B is/c 8 ga1xtcwl53.zloo p gba0+ neutral. They are placed near each otherpgl 8axga. zt+3l 5obcw 01/co 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 charge an electroscope posmmidaj h0acp 1u18 *2uitively?

  An originally neutral electroscope is briefly toob; vsrmykks8+0.yg h*o4ap2y91 ieruched with a positively charged glass rykr0ev 9sg1*o.k;irphm a2+8b 4syo yod. The electroscope

  An originally neutral electrosc,xwn7 frsy,1c(pxmc 7 ope is grounded briefly while a positively charged glass rod is held near it. After the g(wsx ycf,x7m7pn1c, r lass rod is removed, the electroscope

  A positive object touches a neutral elect d/c(gsfxy8kq0,+s,ne pch 4h roscope, and the leaves separate. Then a negative object is brought near the ele+ ypd s(8chscq ,,/4 fg0hxnkectroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed83,ml0:84 x dly g5jsaapxok qcpi*z 9 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 negaz9,gpx0qx3 j8lm4*piaoylk c5 8:s a dtive 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 0uj*ptp ry1. pthe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a disthd9fd1: / zlzzance d. The first charge is larger in magn/hzdf9z1 l: dzitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near -*: b b.zcqgoteach other on an insulated table. Which statement best describes the electrostatic forobqb.*: tzcg-ce between them?

  Two charged objects attract each other with as4-rczo x: fz4 certain force. If the charges on both objects are doubled w-x:cz4 sr zo4fith no change in separation, the force between them

  Two charges are separated by a distance dr ,i )k5pi h3sr)egf0e and exert mutual attractive forces of F on each other. If the c i3e )0pk)gherrf,s5i harges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attr ivr/6 psu 7xrnx2fe)/9q x:seact each other with a force F. What happens to the force between them if one curenx x7f/ r ):9xs i6ves/p2qharge is doubled, the other charge 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 separate d0rqx3hr:h (x tvm/i6d by a distance of 1.0 m. What happens to the magnitude of the force on the proton i: 6tmdh r03(r q/xvihxf a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1..kax(d-*r.qdb.rbifm7 -wd p 0 m. What happens to the magnitude of the force on the a.- mbbd .k(pr d.dq fxrw*i-7first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What hap fp/g i +k8ewn;7azcd.pens to the size of the force on the proton if tnc kw+a/g7zi.p;fe 8 dhe electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a se8brsrh-*iwjuclk-au 7 dswyh - - 02m*cond 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 corn wb daik7yru82-*-shs jm-0u-w l hr*cers 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 jya78h7emj4o( ua-ttequilateral triangle. When a second charge of +Q is plac8ote j(j4y t-h7m7 aaued 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 followinujed-zq* c8 s)g is not a vector?

  At twice the distance from a point charge, the strength of the elet*v 9lut( 5jrqctric field

  Is it possible to have a zero electric field value z(ur kcl u:9 v6h is78i2psx1ubetween a negative and positive charge along the line joining the two chargesvhc62 zu:xi9 lu7kr1su( 8ips?

  Is it possible to have a zero zrbxoa umc5y6ds z5.m5uj 5:/electric field value between two positive charges along the line j/cu d6.bymr oxjmz 5:auz5 55soining the two charges?

  Electric field lines near psesa4k x0w uf 47n7f+wiitive point charges

  The electric field sld 2 whf9a4jc0hown

  Can electric field lines inter (/exm jx4yn387 lzcrp+ etac3sect in free space?

  A solid block of metal in el:d: o hp+pyntsy xp mopdjz *,-9/t)0dectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's inp)py ozx-h*y0:t/pd: jod9 nt, dmsp+terior.

  If a solid metal sphere and a hollow metal sphere of eqyz wy4is; bqwn428l 0cual diameters are each given the same charge, the electric field (E) midway between the center and the sswzq48clni4y w0 2 by;urface is

  A cubic block of aluminum rests on a woo1sejkpg v:f; lvuc xw6v)6..rden table in a region where a uniform electric field is directed straight upward. What can be said concerning the chajr1vcv6)fl wxg :6v;suep k.. rge on the block's top surface?

  If a conductor is in electrostatic equil/q j0ok 1tb88uyps+j9d,kwhj ibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere thathgb,ce ,f* 4py is grounded. As compared to the case without the hollow sphere, the electric field at a poihc*gfy,b,e4 pnt directly above the hollow sphere has

State three properties of conductors in static eq:y lad;phb 9,t y cr88wv4y*bluilibrium.

State Gauss's law.

  The charge carried by one electr, s l.mk +vszq +1qrtx*q k-n7q8udxz0q;u8nion 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 eledmu(z qn kb ).l(yka4qd: (m*lctrons does this piece oau (.4 n lkqkdl:d z((m*ym)bqf plastic have?

  What is the charge on 1 kg of p 55tp))rbk +wmcijl:b rotons?

  An atomic nucleus has a charge ofsfcz, n7a r2.s $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sv n99nu+m9q*rkab ge9, qsel/eparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between them?a/ vm ng*9rslebu9q+9e9,q kn

  A 1.0-C charge is 15 m from a second charge, and the force between theeqq;f/*+dv0eqsug wj9gik/c g:t-q 2 m is 1.0 N. What is the magnitude oq2 /uvkwdq g- +e;eg0*ct :iqj/9gsfq f the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they/ h8y7jod /ucn g+x9ns?

  The force between a o 7le-2er28(hhsjmmn :*sb h98qtutg$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2y4a28gv 6d(c y )dsosn.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electd8 4sy6os)gnv2day(c ric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chy6 hh9jzn k8n9arge is at the origin, 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 z9j8k h6hyn9n origin?

  Three point charges are placed on the x-axo/i pvfaq gt,8) uqojw :muoz*8* st1.is. A charge of +2.0 mC is placed at the origin, -2.0 m 1)/zqwv:tjmu 8otpia . o o**sf8q,u gC 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 the origin?

  Three point charges are located at taum01 xkm +u.ghe following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 .1kug a 0m+xmumC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is place(n:( s*.j tk1uzusyu 6ljtb0ld at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an elec.zk(n(tj1s b 6u y*llutu j0:strostatic 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 is at (0, 0.10 m); Q3 = 5ns.r7tqxh (j u4ld+cx *ui 0q6.0 nC is at (0, 0). What is the magnitude of the net force on4.luc*qu 0 x+sh (67 dtinjqrx 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); Q3 = 5.4-xpswd j3fgd(0z,e w0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charge? 0pdfj4ws3x e-z,g( dw

  Three identical charges of 3.0 mC are placed at the vertic,*vqrl28p .5q :bgxx.p3xu qeoo ; wnjes of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any jvpge 3rw o*,.qn5q28uxo.p ;q: bxxlone of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what phtrz51d6 d0nptj*l +u* h: nksoint, on a line between the two charges, would it be possible to place a charge z06d +d*jrhk : 5ltpn*1htn suof -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at thenbfe06rbks, .+ ,ick 2 tjt1vt origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it isejt1 2cit+kbk t,6,n fv0s br. zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 23nj 4th ok1. a iughbf(zt(m55a. Where can a third positive char g(kj 5tu ht1a3bn(i5.hf 4mzoge +q be placed so that the force on it is zero?

  A copper penny has a m;c4thnite;scl;i(li ss r)6fan5. ( eass of 3.0 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 upa xwsmw+u5wl* yxy7 65r yo7m8 against the force of gravity by the attraction of a fixed proton some distance above it. How far above the elecam75m sxw 7y8 wy+ x*6yorl5uwtron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncondu2x7w -gt 6wzgf.rtz:jcting threads which are 30 cm lg t: jxt z6w2r.g-7wfzong. 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. Wqqjn7ye/ bb:s m2i85 ghat is the magnitude of the electric field at aqyjgi 8b 57m/ sqenb:2 distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of n8fylpf +2 liib )v,/o1.50 m from a 50.0-nC charb/ln f f2)piyl ,+vo8ige?

  A 5.0-C charge is 10 m from a small test chariv*rz sp ast9o.8c5()x rka2tge. What is the magnitude of the electasa tz . )r59pir8v(okx2* sctric field at the location of the test charge?

  A 5.0-C charge is 10: eg2,zkp* hxp jd(ivfa6u9.v m from a small test charge. What is the direction of the electric field:2(kjz, * f vpgapevi6x9d.hu?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the e(ifc-v6 c6c nforce experienced by a 6fcc6(neci-v 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 4k6d;s-iehcmy,f + nycvjzxj( -k6q 5separated by a distance of 4.0 m. What is the elef6ki5;js6yq- 4yh(kn+z,xd mce vjc -ctric field 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./2 -n -mexhdql xg6c3. yca)gd0 mC charge is placed at )cdaec/2-lqg 3gdn . h 6-myxxthe 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is pdb .o wtwi48v6laced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At6.iovwdb8 t4w what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0d5 ssw xb-t*2k mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is -s5 xb*td 2swkthe magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the threejdck1gbzsae /t)8 mov 76y3w( corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric f7w m(g/a6o 31s8vc)j dkbteyzield at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at th 28zspins, xw.*8f dqve corners of txw8,8s*qp finzv 2ds.he 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 electric field at the square's center?

  A force of 10 N acts3rh dzqi84 9mnc:t* n f6pgkx) on a charge of 5.0 mC when it is placed in a uniform electric field. What is the mag 4h:g8pm9 nk3rd)*xitqczn6fnitude of this electric field?

  A particle with a charge of 4.0 mC has a m g2.xvpverng/xc6 q ib;- :-dxass 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 600dqv/xfugy kvot/;+x9 (x kh /w, t/.rq0 N/C pointing downward. What charge must be placed on the ball for iu .rtvq ox(/k+ /,gtfy/q;9xhdv kwx/ t to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 u/1 9u g00nd;g a4g; jxrrskcunC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and directiurk4ug9c gng/dx1ru;ja0 ; 0son of the electric field?

  A metal sphere of radius 10 cm carriesr(wjiko: hgdzvs l/d5pj.f.du 4 c)4) a charge of +2.0 mC. What is the magnitude ogp /jd kwozc:dislv)hd4r)5j ..4f u( f the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.fx y hvfw2v 0,g+pju/.0 mC. What is the electric field 6.0 cm fromv0 pjgf+/wfh.v2 x, yu the center of the sphere?