State the law of cons8hb dt;k cc6u(ervation of electric charge.

  Is it possible for two negative charges to(pr2u z )ted/dpws+ qyp 9l23t attract each other?

  Is it possible for a pose3sq6v t jmd3sa91ya9w9m w* uitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Dz0wzxbi/ )da5uring the process the glass rod acquires a positive charge and the 5i zdb/)axz0 wsilk

  A proton carries a

  The model of the ato e. re0ggchr3/m shows a

  A neutral atom always hrzp.8n3dc ir 0as

  An atom has more electrons thawwr1qh0zih,xwdooc 032 3y 8oll +0k -/xwcjzn protons. The atom is

  Materials in which the electrons are bhg i(-/zk5app)gjd3 mound very tightly to the nuclei are referred to/)pgd5mpah kji3( -g z as

  Materials in which the electrons are bound very loosely to t0 :wrxub79clrhe nuclei and can move about freely within the material 9rwcrb0u x7l :are referred to as

  A negatively charged rod is brougoq* t3 u :3ts5m.l5flos3wohkht near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be charge lf3o3qt ol*kw:s5ts u35 om.hd

  Sphere A carries a ne9 -lr+ z eqxuweq62.vvt positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Spherq ez.q+6 v vwul9ex2-re B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negativelyflnq*7 g u4 o,2a(,nx*gm usmv charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with s9herm64t cr( ;ekf+p a positively charged glass rod.p m(t esr c6e+fhk;94r The electroscope

  An originally neutral electroscope is grdu(eona k3+67xjhs g,2r*l myounded briefly while a positively charged glass rod is held near it. After the gleoy*( sxgau+,n37 jdh6 r2mklass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and th:h80mv6a ol/3lycnigq - :pvae leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leav-vgc/ p:: lham0nqa6v8il3yoes?

  A large negatively charged objecc, n ov/d75c wkud5/gdt is placed 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 stopsougndvd, /7 ccd/5w 5k. 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 Coulomb7oog zdma380m constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first ch van9n.xth 73 wyl :j;qc-j38r. ujavxarge is larger in magnitude than.jjr- hxn xyjln 8cv.w 3q9u:t;vaa73 the second charge.

  Sphere A carries a net charge an0xb4z hlx*m :zd sphere B is neutral. They are placed near each other on an insulated table. 40 xz xm*bh:lzWhich statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges oncneqw1xj2e0 14,hhzs both objects are doubled with no 12h14nw ,0zqs ecjxehchange in separation, the force between them

  Two charges are separated by a distance d and b pegnt+p um :7,qh4:nexert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what arp nb4h,7m :pnge tuq:+e the new mutual forces?

  Two charged objects attract each ot-kr4t.u3j , tnt hiofw..rn5lher with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the shktlnttwn.5-3r u. i or4. ,fjeparation 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 distanceais ,41 hcinatlq5mnc::4*f f of 1.0 m. What happens to the magnitude of the force on the proton if a second electr t5qc:a mnasli*f,fh4n 1 :4cion is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hap*x d p)qao5ivqo 83a5rpens to the magnitude of the force on the first electron if a second electron is placed next to thp*)q ra3iqx ado 5v58oe proton?

  An electron and a proton are separated by a distance of 1.0 m. ()0dgiwg egilod*9u9fadxh :w7d + n:What happens to the size of the force on the proton if the electron is moved 0.50 m (+i:d *i: ) 99ef0ln7du whggdx gdwaocloser to the proton?

  A point charge of +Q is placed at the l8s3 0twzvj7jcenter 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 placed at the other three corners of the square. What is the magnitude of the net electrostatic force acti8 s 73jjwt0zlvng on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. Whet1 hryvtv77 n8n 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 vr8h77n1vy tt+Q placed at one of the other vertices?

  Which of the followingzfmj6 6s vk1rgoizlb9 +c/)j6 is not a vector?

  At twice the distance from a point charge, the strengt1e1l a*(j7n7xac) 4ouoacqqx h of the electric field

  Is it possible to have a zero electric field value between a negative and posr zp5m4t.f)y+un1a pjitiv 5 )jyz1mf.tpau+n4pr e charge along the line joining the two charges?

  Is it possible to have a zero electric fiex4a p2 f 5f yy4kd9ee6l6kz9pild value between two positive charges along the line joining fy kyi 2 eae66f4pxlz94k5d9 pthe two charges?

  Electric field lines near psitive qsg0mka mm rx 62v +bes4..el2-m0z cbpoint charges

  The electric field shown ce;7vmal(ou 8u)f + 7at,6 e1fjclajl

  Can electric field lines intersvy ,ost)cp(32 yu mfr0ect in free space?

  A solid block of metalp (iq d4tw:;jz:h8yb z in electrostatic equilibrium is placed in a uniform electric :d 4 jtz(wp;8hzbi: yqfield. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters p(qoqbx ,y 5f)(ui+ qm7lyue.are each given the same charge, the electric f(xy m)+. ,ubflup 7iyqe5(qoqield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a reg dfd; y6z)j7opion where a uniform electric field is directed st7z6oj; pdd) fyraight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electby)f. t4 pmnxvb j*u-d3d: 5 lm0vxi/hric charge

  A positive point charge is enclosed in a hollowits/k/i8g ap:b u h o+2new-l( metallic sphere that is grounded. As compared to the case without the hollow sphere, the electr 8tus( kh/-ogl:ne2ai/ +ipwbic field at a point directly above the hollow sphere has

State three properties of conductors in staticb3 i2knqm fw5z zq3,3c equilibrium.

State Gauss's law.

  The charge carried by orble xge, k:)))s rbmn0d, )vine 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 k+nv1fgyeo 0yy h5u0 ,net charge of +2.00 mC. How many more protons than electrons does this piecgyk uv,+yo 1050hyfnee of plastic have?

  What is the charge on 1 kg of protoqp,e ,mpa7k e-naf,; n9/elzb ns?

  An atomic nucleus has a ch .muk(9 g(aisjarge 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 xzmogsb ,).p*charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electx,pzbg)s *o m.ric force between them?

  A 1.0-C charge is 15 m fr(6fgm h,uibb +om a second charge, and the force between them is 1.0 N. Wha, ub ih+6mfb(gt is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far lu*35bg2y0hf8j,boy t2 o oay*1s 4;mezonkd apart are they?

  The force between a t syqvsg-ut.c6xq8 k*7cd ,0h$30 \; mC$ 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.( wr9zfaxxl 7)e ao-n40-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betwewn7a )f x9-eaxlro4z (en them?

  Three identical point charges of 2.0 5nm2 ao)jt y86wu krf0mC 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 uw2 n0yrm8ofk ajt6)5at 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 on the x-axis. A charge o )a*etv+ ;tpnxx3 5cgpf +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and + gexv5t3 tpa*)+ nxp;c4.0 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 lgdd54 vfdahm)7z1oj4js5g : socated at the following positions: 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-mC chargegv o m ) 4dsz4aghj55sfd7d1j:?

  A point charge of +Q )xvi6 w0ft vp0pb)svx a 92 f+mcw0g-xis placed 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 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 -vm0+ 0-ffw cxpivpw9 t)s 60)xxv2bag Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1oyp)piylk8,3 ;6 l eol.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC cha yp ylloloki6p8,e3); rge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC w2 nv7s:o wm2sis at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on thonw7v22 ws:sm e 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral t n x a2:(tdhm*yvn0,rgriangle which measures 30 cm on a side. What is the magnitude of the electrostatic forty0n g:an xdv,r*( 2hmce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what poi /wpf c,+tg5mlvgr(3d nt, on a g5+lv c/3g(frmdwtp,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 a7vqn z2s2p 3hb 1r4(lzvbk 9dct x = 4.0 m. Where on the x-axis can a third charg23 v12h47vpc9d nb(kz lszqrb e be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is pl 9hbs9k isi-psbh0uo)e6qg18 aced at x = 2a. Where can a third positive charge +q be placed so that the khies bsih 9-8us9b)q0 1p6o gforce on it is zero?

  A copper penny has a mass of 3.0 gmx)7wwu;6o8p0.s gkf3e)hpk g.t1uu dd s)u y . 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 forc(kjn r 5(awvz)e of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the protr5 wzj()a(nvk on?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thrt* 0o3gnm,itarjr- *ueads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until thet ui *g,ajnt30ro -rm* angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge+m:.qx3lbx7uq5r a oix3d uyut2 20 jx of +40e. What is the magnitude of the electric field rqqo30ud3 xm+tlu2x .j: aib7xu xy25at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a gko s/nk+lvg hp9,/2 kdistance of 1.50k+ k/ogv9, hk2l /spgn m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a sm y2 yv.f-i+9.xxyb+m 1eijd odall test charge. What is the magnitude of the electric field at the location of the test+fv - ye+ybd9 .2mjd 1xi.yixo charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direct0e*4dss - lmru e)) .fdfx*hod lf-so:ion of the electric fielse0dd hsu*4s)roe.:f - mlf*xld f)-od?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of tefj1q: rfm 6c1he force experienced by a 1.0 nC charge placed at the location of the t11 ef cmjf:qr6est charge?

  Two point charges each have a value of 3.0 Cr3b 6,oxl44zkd q w7vk and are separated by a distance of 4.0 m. What is the electric fwbrqxl vd67k k ,43oz4ield at a point midway between the two charges?

  A 5.0-mC charge is placed nmkcedu7 fg,64le- o9at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the elec 76cum 4fd,k9lneoge -tric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm iyq4+yn6 i zc3vv,l0bcu kn m5o ro/)8mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what po5vo)+ml /ykbvy4uni8rcn0 i,q 6cz o3int on 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 m:xzjq;ed c6( k g)j1lx = 0.20 m. Whaeq1 cg6 xdjz(m:;lj) kt is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.5;s 8olvbemyad9mi6) pkqz tm;ai /*7 40 m. The last corner is occupied by a -3.0 mC charge. Find the electry 8bmit v)*7oizp;m9qla6d4 a /sk;meic field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placeddm u,twyv-e 56 at the corners of the square as follows: +4.0 mC at (0, 0- v5y ,emd6wtu); +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 fqfmbe/ w56yuu72 pmblu; 6z5is placed in a uniform electric field. What is the magnitude of5pzlb u y2uemw5u;q/66fmb7f this electric field?

  A particle with a charge of 4d:q jzljtd7 1bj,.q -.1tbf 3jtv 9hrj.0 mC 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 fw u aa0y6gve44ield of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended?vwea4 y a640ug

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is p2ddp t )ogk0c+laced inside a uniform electric field, and is suspended against the force of gravity. Wkd2p)gt0 co+d hat are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0iq6lzx l 5xiqdzw(q/za0/k:. mC. What is the magnitude of the electric field 5.0 c(z0xq5:l/iik/z .za qd6 ql wxm from the sphere's surface?

  A metal sphere of radius eqq h2,uk -d)v2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cmev 2, -qukdh)q from the center of the sphere?