State the law of conservation dx njvn y0fl96re9+, sof electric charge.

  Is it possible for two negative charges to attract each oth 5p 8yeowr.sw;er?

  Is it possible for a positive and a negativeo 4ss5u xc+in0 charge to attract each other?

  A glass rod is rubbed with a pie uhl k61k kzr+d39es1kce of silk. During the process the glass rod acquires a positive +6lsh 3zu r1k9k1ekd kcharge and the silk

  A proton carries a

  The model of the atom scp *w 0rshr8;chows a

  A neutral atom always qt,h fpg),1ngesvi( .has

  An atom has more elec- atb-d,.91omyr d-o8okqhbp xu +6cvtrons than protons. The atom is

  Materials in which the electrons are bound very tighd9 pspwfqjia4 :dc .((tly to the nuclei are referr:i.jd da9cqp p (wf(4sed to as

  Materials in which the electrons are boun-tgb4/* 52srlnx tjescu68bod very loosely to the nuclei and can mov s6s/ju2b*b ct4lx8-g onte 5re about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bartwof5a/lt 3.jmw fy-d-vz9u 0. The end of the metal bar farthest from the charged rod wio.w-5jtz9w0a tml3f- vd/y ufll be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plajor87kth b+.3frc j8t ced near each other on an insulated table. Sphere B is briefly touched with a wire rbcjo3t8 k f+j7 h8t.rthat is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posita3p74kd r fi/sively?

  An originally neutral electroscope is briefly to8d.4ekwjvob1r8d wd rk ka l e227g+,puched with a positively charged glass o7 v2 rl8k.d2kpe1w + dg8r4kdwa,ejbrod. The electroscope

  An originally neutral electrosctd vg-8c:*65v oi.kb*mcqi m iope is grounded briefly while a positively charged glass rod is held near it. After the glasv.vkiigibm *:q*cc8 tod5 m6-s rod is removed, the electroscope

  A positive object touches a neutral electy/(:nol(xci-yqg9a tnw ,+ btroscope, and the leaves separate. Then a negative object is brought near thixnn cyb/( (g: t-lqotyw+9a,e electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an cruhuke+j,d1via67e 1m2,aainsulated table. A neutral metallic ball rolls 12ha+ueckiu a7,, vamd6rje 1straight 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 ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomx-oyot*zdhq ))w(no zxz c01c 8ueo/3b constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by z y7xjhk3:gl 9a distance d. The first charge is larger in magnil3z9 xgy:hkj 7tude than the second charge.

  Sphere A carries a net bf i z7/tyb14n90 hsg,rfqm6o charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrosta,0 grh 1yoin6 /4z7tb m9ffqsbtic force between them?

  Two charged objects attract each other witn9xqb6ps6+ee h a certain force. If the charges on both objects are doubled with nob+xqpee96 6sn change in separation, the force between them

  Two charges are separated by a distance d vr(b)d 5 jj5or6k- heydxl0,d and exert mutual attractive forces of F on each other. If the charges are separated by a dist50edlr )bx d,hkj6(yj-o5 dvrance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the forc41+aj8u uwi qrhy9gp8 e between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-f w+q 889u41ruajypi ghourth its original value? The force is now equal to

  An electron and a proton a7ov2+muwgno)4z1 tevsmrxl2on )c8p1 bn(4yre separated by a distance of 1.0 m. What happens to the magnitude of then(27vocx n)e +yt 1p1w4m82onv z ugro 4bs)ml force on the proton if a second electron is placed next to the first electron?

  An electron and a pr5bs+zmpx2cw4 ndf,a ,oton are separated by a distance of 1.0 m. What happens to the magnitude,bxnzcs+ ,d 2wpf5ma 4 of the force on the first 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 ha a*5zfm3r5hl jv9(m6)t qfqmfh8eb 9hppens to the size of the force bmf)zf (r*qv m96t ha mfq9j558eh 3hlon 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 squaxa y5yw0y; or7 nr9qz0re. 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 placed at the other three corners of the square. What is the magnitude of9n7x5y r yz;war0oqy0 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 equilate4,9c bjd b53dma9h7 ocm zlc4lral 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 ob9cj9 dh4bcd7azmo 453 l m,clne of the other vertices?

  Which of the following is not a vec*u bsb s; :kn*0o-1kfq m,thpetor?

  At twice the distance from a point charge, the jx( amogpz4 4/ m1mku4strength of the electric field

  Is it possible to have fid i39dk ;,lxzde4rwn21s1aa zero electric field value between a negative and positive charge along the line joining the z2,i3 wd9sda xi1; n dle1k4rftwo charges?

  Is it possible to have a zero electric field value between twnb 0t*xzb.l p5 t xh/vls9w6;po positive charges along the line joining x /z6ht59bv*sp0b.nwtpllx;the two charges?

  Electric field lines near psitivef; r6fy3uxn4p-i hu l13wz z2u point charges

  The electric field shk3kk*y 6*ho gx)5phba3w0 o ifb+e3 afown

  Can electric field lines intersecuc2wywwp7dnqq2:0 l*w q (yn+t in free space?

  A solid block of metal in electrostatic equilibrium is ,v2o yg +f+qzuplaced in a uniform electric field. Give a statement con+uv2fz,og +yqcerning the electric field in the block's interior.

  If a solid metal sphere and a hollo805s)-xp tylt2f pq zow metal sphere of equal diameters are each given the same charge, the electric q52)0o pxl8tsf-pt zy field (E) midway between the center and the surface is

  A cubic block of aluminim4o +vz 6mv7*kkb 2yys1 jw9uum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the ch 46w*kbksy+ijyvv 1 7m o9umz2arge on the block's top surface?

  If a conductor is inz*u t1u/m uh7v electrostatic equilibrium near an electric charge

  A positive point charge is encloselbo 0((o vns g)9xp)txd in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electgs x9 vt(n)o0lb()poxric field at a point directly above the hollow sphere has

State three properties of conductors in static eqxk+;v z j*fze ,a7o-s3cfuqb7uilibrium.

State Gauss's law.

  The charge carried by onp8,ae nc30qwx -i(htge 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 momy:kfyn0fh1 /v).l g fq6j:9: zwx ihgre protons than electrons doz /ggv)fqlfm9hnx:h y60jiy .kf:1w : es this piece of plastic have?

  What is the charge on 1 kg o4nv hpmbpp --8 41khpuf protons?

  An atomic nucleus has a charge of 6f +3 vgk;bojn$+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, haofeh z*mo; 6*9wa: xjave charge values of 2.0 and -4.0 mC, rwo xj9ah*ea:f6z;* mo espectively. 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 bers m/b2 fabw9z8m*ct;b-kb+ y tween them is 1.0 N. W/c9z* 2 - bbtm;kybm8r fswa+bhat is the magnitude of the second charge?

  Two 1.0-C charges have a force betwezp; b0 xjkfo04 8tw+foen them of 1.0 N. How far apart are they?

  The force between a ym 4x(d+,.lc1owzbe c1sa-ei$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exr: y2 atqnbeynpw/42(+nl, *8rbvh z tperience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric for (h2yz+qr2 rley8: p n,t tbabvn4w/n*ce between them?

  Three identical point charges of 2.0 mC are placed on fa z; (sbh38blthe 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 are the magnitude and direction of the electrostatic force which acts on the charge at 3bsz8a(bhf ; lthe origin?

  Three point charges are pfgzy98gw)m ; 6/ guywwlaced 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. What8)zmwfwg /6 y;y9ggwu are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the foll7q0z*jr89f h 6cy zxq)gng yv;owing positions: Q1 = 2.00 mC at x = 1z)qqz0nj yhg;7 ycx6v 89* rfg.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-mC charge?

  A point charge of +Q is placed at the center oku ,q7tch,e rob35j4of a square, and a second point charge of -Q is placed at the up3o e75k4uocr,tjhb, qper-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, 0)02n,in9g q7 bzcz/ siim7chw( ; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitudewczn9 0bh7(, z gc2iism n/i7q of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, ::o j xq,chy+bkdop63 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on theodb:c,oq+3j :kxy6 p h 5.0 nC charge?

  Three identical charges of 3.0 mC are placed jm.w xpil8n h 1rt:dzv3q92a3at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the l81dx:ani2 v q33.ht jrz 9wpmelectrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +cm,p2fr tvh4tcu2,jnz(31o8.rksi 6 v s 8vkf4Q, which are separated by 3.0 m. At what point, on a line between the two cr psv ofhum38zc.,s t(i68nj1kfk22vt r,v 4 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 qb kk l+(9xzgdd9b3a bv:x*x:w)f;c nand a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third chbb3kzxdx(dc 9qx+k ; vn: bw*)a:l9fgarge be placed so the net force on it is zero?

  Charge +2q is placed *+rciy.xzmm9.(qdqy at the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the foyrq.+y9czx *(m qimd.rce on it is zero?

  A copper penny has a mass of 3.0 ga4c7/znd37*l99f id cnrtf iv . 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 attractiony c,5x inx3:3y4jcmzp of a fixed prot:cc5nyx, 33ji zyx4mpon some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from ak(fc1fcg+ z/l common point by nonconducting threads which are 30 cm long. Both are given identical /cz fcf (+1glkcharges, 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 thrnn w-4up +v/ie magnitude of the electric fieldnrpnvu-w /i4+ at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at9qjscvh dh 3j56k5.uqcw lxw(ig19;e a distance of 1.50 m from a 50.0-nC chargd j1s h9(cwh; evuj9q gkw536c5x.qlie?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the vk j;wc50 (1uprntg b2electric field at the lonw 1g tc r0j;u5vkb(2pcation of the test charge?

  A 5.0-C charge is 10 m from a small tesd8y7:qtydyqs jb0 z1abced4-z,q l n:7)mh-ot charge. What is the direction of the electq la4y,-71bcs n0yq eqh-bddz :t oy7) 8dj:mzric field?

  A 5.0-C charge is 10 m from a small test charge. )n.oe+:h 1 rcpznzs ;gpb :la: What is the magnitude of the force experienced by a )ebszngp:h:lcnarz.o1 p :;+ 1.0 nC charge placed at the location of the test charge?

  Two point charges each have +vka, zk:a/l ga value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two cv,kak/g la:z +harges?

  A 5.0-mC charge is placed ae)jfg3yb g ,l7)k x1yvt the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric f ky7vjxg ef) ),b1ly3gield at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick ande.wdc2neo27q j q7a u5,s uo4r 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 zero? w4oou25s,7 cd.ueqnq2e 7ajr

  Two point charges of +3.0 mCd;adx. m.fm q )9tpqf7 and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the elt.mmq; f.x )pdd a9q7fectric field at the point midway between them?

  Three 3.0 mC charges are at the t 4zd4pkip a-v: rdb7b2hree 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 the :zad bb 4-4rkpvdi7p2 square.

  Consider a square whiq072uchxk20ah j kms9ch 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 mC at (1, 1); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is the magnitude of the ele2s2a 7jk0kq9 0mhxhuc ctric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC whenhx 6a pj*t8v z6)belk+1*grku it is placed in a uniform electric field. Whatvbrtkx1glku8*e+a6j* hz )p 6 is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass9obq-k o0 x-mi 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 pl1;xolm0 vvo7kmztb1 bo( c 2si(bn-h 9aced in an electric field of 6000 N/C pointing downward. What charge must be placed on the bal( 7lob0bzvo1t;k 19-nvshmb mc 2(x oil for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The balbx 4wn2ckpal4w rt5t739z41k.q lmi y l is placed inside a uniform electric field, and is suspended against the force of gravit wmz.a4lp15n 9q kx2cb3k t74iytlr w4y. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a cha :o t4e9fjicj/je+ ntn7;bpi;rge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfa:cfo 9be+e 7jntipn i;/; 4tjjce?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mCtqahw hsm.8s10r uh-n +l4 ua0+-d8k qdx sgv;. What is the electric field 6.0 sl mduh-0xqh gk84-.snd 8hvw1u0+sq aatr+; cm from the center of the sphere?