State the law of conservtx:/ ofvmgg). ation of electric charge.

  Is it possible for two ne, phocr3 5twq9gative charges to attract each other?

  Is it possible for a positive5e5 gfo ivzj5+ and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the g5 mai(shko(,:dw g opd2 /px,d mo.ku6lass rod acquireshmx.s6,ko:oa mwd g/ 2p(k(d dpi5o,u a positive charge and the silk

  A proton carries a

  The model of the atom sho j1 3+cfguvpt:ws a

  A neutral atom always-p; n+jx eg+fdg6 8ty5jb1ilp has

  An atom has more electrons than protons/m .37f lge3ozkvpgegs7q(5t. The atom is

  Materials in which the electrons are bound very tightly n7,ycix3m n)oyegp jg3: d0d2to the nuclei are referred yni xdcg3pmo g,)7 denj02y3 :to as

  Materials in which the electrons are gge0t .e5f-h f kj3y5nbound very loosely to the nuclei and can move about 5t0h3nfk.jege -gy5 ffreely within the material are referred to as

  A negatively charged rod is brought neatf., i-w w, zkc1qqp*er one end of an uncharged metal bar. The end of the metal bar farthest from the cha w,-.1q*wc,zeikqp ftrged rod will be charged

  Sphere A carries a net positive charge, and sphere -/vj4d/xg wsmb)8tn a7dxb(z B is neutral. They are placed near each other on an inxatw8xd/ms)gn( d/b7 b4- zv jsulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an el cu +dct3 1d2n0mvg *-qwwf)vtectroscope positively?

  An originally neutral electroscope is briefly t*4v dcpfa1+pc ouched with a positively charged glass rod. The electroscopf*cvd+p c1a4 pe

  An originally neutral electroscope is grounded briefly dz )cs 9gu32srwhile a positively charged glaudsgc s)9 3zr2ss rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electrov, 7 ;adoq4tiwscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens ;vdwaq74o, tito the leaves?

  A large negatively charged object is pa0991hn2 m csbf/utq;olaijw* )xe+a laced on an insulated table. A neutral metallic ball rolls straight toward the object, but stops beforib1qma/ocn*0j; le aa)uw 29 9tf xs+he 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 ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Couloo4-doqvob in)epjht 1q5*6o 2 mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is lar cqx +k7pi1e4b8bs9mlger in max1m+ pqsb49kel i 8b7cgnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. Theyii:mxox +b*dk66o smzy 4 f,yibi(+4h are placed near each other on an insulated table. Which statement best :+mmi o*h(s d, 64bxfiiobi6zkxy4 +y describes the electrostatic force between them?

  Two charged objects attract each oth*njj y539evctan., lbp .y2zfer with a certain force. If the charges on both objects are doubled w yp*lfnv32.y9.bca n 5zj jte,ith no change in separation, the force between them

  Two charges are separated by aitl * wute3)w2 distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the lwiet 3u2tw) *new mutual forces?

  Two charged objects attr.p qie4ja;2vj act each other with a force F. What happens to the force between them ifjv.p;aj i eq42 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 force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What -b3t l sb/(so8 ozz/ddhappens to the magnitude of the force on the proton if a second electron is placed next to the fi8d/db lo/szbt3(zo-s rst electron?

  An electron and a proton are separated by2ay v(irxm 8r :)rt5 7gqjsdb: a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electj:)g 8:r t bsdm5vrax(yiq 2r7ron is placed next to the proton?

  An electron and a proton are separated by yoj), or4g:drox9tm2 a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved2 )4 9oxr:tdm,ojoygr 0.50 m closer to the proton?

  A point charge of +Q is placed at the c )qy ijy-z(w4)2/fnrbe leif6enter 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 center. Now, identical charges of -Q are pi/r izfj(n4qb-fl26 e wey) y)laced 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 centroib1e2/1 g huvxsd of an equilateral triangle. When a second charge of +Q is 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 1x1 beshug/v2the other vertices?

  Which of the following is not a5r4h4dqc,v js( a 0dkn vector?

  At twice the distance from a point chaj/ 6kgtbal.s *rge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and positz;u8n,15g0yvzg ieab fct9 e(ive charge along the line joining the two n8 iee 1;0yavzug gbztf95 c,(charges?

  Is it possible to have a zero electric fe 3tv.j*/p w(sew * mj:vk+megield value between two positive charges along the line joining the two charges?wswt :*m ve (pj3/mke*+jgv e.

  Electric field lines nearop,79s rcbf c: psitive point charges

  The electric field shownvot:,1e jy3+ a )ndwng

  Can electric field lines intersect in free spaua-5sc zal2g-ce?

  A solid block of metal in electrostam98mu3 v bw t.6ht1qfqmz;hv +tic equilibrium is placed in a uniform electric field. Give a statement zqb6f8u3vwt 9tv;qmh1 .mmh+ concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal zs *;c/ bdpf-odiameters are each given the same o*bd/pz- ;fcscharge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in iyor( r 47maa7a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's t7a4(mryi roa7 op surface?

  If a conductor is in elec6ruj9m 8d.bur 19zyvh trostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollowol(5y zj q-q(u2 g +wm35nvkjn metallic sphere that is grounded. As compared to the case without the hollow sphe5wygm (jz u2jk o(qv-+nl35nqre, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriumb/ -3dal+rg p76*rri fu-y gez.

State Gauss's law.

  The charge carried by oe g-b-l 5/wx+swp .cbmne 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 chardv1:7w t p.gzzge of +2.00 mC. How many more protons than electrons does this wgd1 7zp vt.z:piece of plastic have?

  What is the charge on 1 kg on3oa3.g kmhtnldw)ga6 w 4y/7f protons?

  An atomic nucleus has a charo/lhpyhs6 3 2uy,zp(c ge 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.qcvb i z.v1ln12/ccm,0 and -4.0 mC, respectively1.m2c/c1cznb lvq i ,v. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and wy, pmrmr 8 ionvkfs9lq7 ;;;0tpr1 7dthe force between them is 1.0 N. What is the magnitude of the second cik ,fr 17;rpodn vt;9 rl;y80qpsw 7mmharge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart arehdk2vn( v ,m g yrz)t*:(vlmgd ;-+t9ilj7seo they?

  The force between a u6-u 0hm p5ihw$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initd9o27u956p+qbh( nfasb5hr s:b er chially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separ2( 6rsbehb+:5 dr 7h5coufa psn9b9hqation of 8.0 cm, what is the electric force between them?

  Three identical point:,/n wmvl8f nt charges of 2.0 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 the 100 cm mark. What vm8nf,/tw: nlare the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on thep ;uud09bpe o1t*e2as 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 maabs1u0* o tu2pepd9;erk. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following posit9c2 rmls61zt-3 yxc ejions: 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 3.00-e tlj6zs- yc2c x13mr9mC charge?

  A point charge of +Q is placed at the c98h. ywv3uq;l cumhn1 enter of a square, and a second point charge9 wumh 3nc yq.hu18;lv 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 of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, m*/l76/umqrvb53 ga 5jfnysl5a9 yoi0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0,5l*y9q a5a657u fm3ls/nir/y bg vmjo 0). What is the magnitude of the 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); Q3 = 5vdwss( wkja+-q3: ; if.0 nC is at (0, 0)va :s(f3+iks;wqjw d- . 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 vert c(brqse 6 s87 .8tm;a1rika1dijx d zc;;,xnvices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which;ba;csetq xns 86mk dr8 jxv 1c7,(.ir1ai d;z acts on any one of the charges?

  Consider point charges of +Q and +4Qs;csgs:;z:hd*,t ea elni y,3 , which are separated by 3.0 m. At what point,;,sa; 3 en :zcg*hil sesd:ty, 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 would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m/ls+; hs(asxg. Where on the x-axis can a /(+;hlgaxsssthird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where)xj9hbx v). uy can a third positive chayh9v x)bxu)j.rge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tota045lhjn j 1jld+nf l8;;bi8n nj le2obl 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 8rebfg0q l:( :nz w:ogthe attraction of a fixed proton some distance above gflezb 8:0r ::q gwon(it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduuqwqd1g9.k2 /-w l.-r, jxqvfr ths*: ao-kixcting threads which are 30 cm long. Both are given identical charges, and the electrost doa-s2jl*rx.9q.,tx:v -urfw qk qi1 k-/whg atic 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 of the ewoe42 y9f w5jwl6/* zky-5s kse.0tta mow8v flectric field at a distance of 1.0 m from the nu.5a wyl- 5k/k ot8s 2zej e49svfywwt*6mwof0cleus?

  What are the magnitude and direction of the 5,2)tqd pav pcelectric field at a distance of 1.50 m from c5tqva2p dp,) a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of nfe8s, ga74 lathe electric field at the location of the testnas 8eg,l 4fa7 charge?

  A 5.0-C charge is 10 m from 9lp6g (:75fs7+rmv g sesjy ocr)y2jca small test charge. What is the direction of the electric fiel r)s y92f(gcsgjvp7mo: 5 c+rjs e67lyd?

  A 5.0-C charge is 10 m from a small test charge. What is the mas4anhucsx ,x( zw(2u7gnitude of the force experienced by a 1.0 nC chaa7 u4nxuwssz h,(cx(2rge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated v 8mfugssw5 jp.(s.d ;by a distance of 4.0 m. What ;m.wj .gpv(8u sds5sf is the electric 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) o0)n7hze vy nh-eo5e -4.0 mC charge is placed at the 50 cm mark. What is the electric field at tovy7e n-h)h5 on)ez 0ehe 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm m5c.4gtc go) enark 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 charges is the electric field 5g4g)c nct e.ozero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 andx+lvs8:a epuwn as2 (+ x = 0.20 m. What is the magnitude of the electric field at the point midway between them?lau2sx v( n:w+ e+s8ap

  Three 3.0 mC charges are at the three corner:f1oqx x+zc3 rs 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 the square.3:czq1x r+ox f

  Consider a square which is 1.0 m v5xol55z ,lsd,e8za uon a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0oas,evl lz 5d ,uz58x5); -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 inq8 w pk1( 6p6xmfxh,hu a uniform electric field. What ifxh w (66mu8q pphxk1,s the magnitude of this electric field?

  A particle with a charge of 4.0 mC0q-)msr.5ndqo2w8 z 4lu lqro 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 field of 6000 N/dm::0q+spl ba2+dcsw(p 3 5v(cl gno wC pointing downward. What charge must be placed on thc s5mln3l02ap( w: pod+sg :bcwdq v(+e ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Tak, eq/yup0 -zhe ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric fieldq-ek,ap/ y0 zu?

  A metal sphere of radius 10 cm carriei 53qya yuj+ be76e3sns a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm ya7 b3i3eu+j6 5eyqsnfrom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. 2q*h+1h h9jzf ibc8taWhat is the electric fiel*hat i qfz hh+jb928c1d 6.0 cm from the center of the sphere?