State the law of conservation of electr15donmi,1 cbaou8ald 3eg(0* tvksd1 ic charge.

  Is it possible for two negative cau6;i 8q5rq-tnwq k)p harges to attract each other?

  Is it possible for a p9pw oq92yqu,;q)wi ceositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During cgcxt8pag1ua;9 3f)c the process the glass rod acqu)utp3gc; fagax18c9 c ires a positive charge and the silk

  A proton carries a

  The model of the atom shows l7nu i(nzu3lgx t98 9q89s0fznrlks.nl8of8a

  A neutral atom always uj m5 e1rdzb1p6 kx 4lk)x6xv8has

  An atom has more electrons than protons. vourvik99n0; The atom is

  Materials in which the electrons are bound very tightly to the nfwnwxv*19 7b wuclei are referred tofwx w9*nb71vw as

  Materials in which the electrons qkxl6pbzuhv+y(63l8j9d- tf r9zdl .are bound very loosely to the nuclei and can move about fredt z6l6p 99lb8qrxj v.-ukdl+yh(z3 fely within the material are referred to as

  A negatively charged rod is b6f) z a3vkvhp*:-rv oirought near one end of an uncharged metal bar. The end of the metal bar farthest from thofr6 v )p:3vka- izvh*e charged rod will be charged

  Sphere A carries a net posi7igkc *9d7mjqtive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere Bciqk97 gd*m 7j is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge k8kabm m0u 0)fan electroscope positively?

  An originally neutral electrosco7btz q, 9r7pb1bm,w z1ayy4vf pe is briefly touched with a positively charged glass rodbfza4bq1y v,m7w y9brz tp,71. The electroscope

  An originally neutral electroscope is grounded briefi2cpwv9t6nz w:o4-f x ly while a positively charged glass rod is held near iw4i:zo 6x2n t9vwp c-ft. After the glass rod is removed, the electroscope

  A positive object touches a neutral elect8k abg (q dnkbm.lr-)3roscope, and the leaves separate. Then a negative object is broughqbg3aknm8ld)bk . r (-t near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged objkhef m.wta 7-(ect 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 stops. The first ball rolls forward, but does not touch the negative object. At no tt-aefm .7 khw(ime does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constants,pan/ eie-p7w- *h yp $k$, which appears in Coulomb's law?

  Two charged objects are seek4 18gbm1 dmzparated by a distance d. The first charge is larger in magnitude tbzm m84kdeg11 han the second charge.

  Sphere A carries a net charge and sptom32b bq j*99b qcy-bhere B is neutral. They are placed near each other on an insulated table. -3tc byqb9 2oqb*m9bj Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charg46:kvc3 nzkspes on both objects are doubled with no change in separation, the force b4 zp :cvn36skketween them

  Two charges are separated by a distance d aq1vm6/: m+ xsv1tw ng jzo83aand exert mutual attractive forces of F on each otherawv s61mz /voqamj8 3:1g+txn . If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forcz6u ,cr ;fbw70 fkhe0me F. What happens to the force between them if one charge is doubled, the other charge wuek; c00frzm 76h bf,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 hap9j u4-9 pbidfsdpp y7)(w-s h0n cwm1vpens to the magnitude of the force on the proton if a second electron is placed next to the first e1i-f7wj p( )n -syhmsv9 0cbpp9d4wudlectron?

  An electron and a proton are separated by a distance of 1.0 m. 95bg ;utyo( 2 y x)kkc:0m4kbjiadg*y What happens to the magnitude of thkk2:*t4 c;g9y oybiy xd0bku )mg(j 5ae force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated 3t ls6:)qilu6fd 5tlmul-kd:a p)j*p by a distance of 1.0 m. What happens to the size of the force on the proton ij-ik u l)*:tf36 6dt:ldlml p5q apu)sf the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed agu x9 f2d0- vk)wjq9hht the center of a square. When a second point charge of -Q is placed at one of the square'ghk90dv q2) wh9xujf-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 acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral +fqj35d)d/x2dy iue .fw3q hd*rz8pb,oy u/rtriangle. 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 placir qup.r5j bqwy ,udd *8 e3 o2d//f)dfyzx+3hed at one of the other vertices?

  Which of the following is not a xd* q7x.qine(ws,:wzygs53 wxjs13l+o lh ,vvector?

  At twice the distance from a point charge, the strength of the electri)o 9:.d(z.nd p z:g2uly i1a.oipofg5bejp3o c field

  Is it possible to have a zero electric field va)k41 cgog6rf5 rxx ne-wa v1v2lue between a negative and positive charge along the 4v r c -ggrv)ex1nkf12x 6ow5aline joining the two charges?

  Is it possible to have a zero electric field value between two posit+s bu4faj0d; 4xt ;x99 9dgh(f kdscvsive charges along the line joining the tudc9td 4f a4 v f0kg9j;s9hx(;ss xbd+wo charges?

  Electric field lines nearky g c3m-5oye(i /)crr psitive point charges

  The electric field sx brdb,,fs+(*i)r avwjz em02hown

  Can electric field lines injlpcaz3h*4u t ceb b2 h+uu(gi4(6w z,tersect in free space?

  A solid block of metal in electrostatic equilibri c*on.lvkz.e e ua0p/:um is placed in a uniform electric fieocevna/e*ul k0p. :.z ld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal spherrq xn-pu uw xf/mt7a;;:ie q74e of equal diameters are each given the same charge, the electric field (E) midway between the center and 4 mr: nu;iua/ xwf exqpqt;7-7the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform nlg .5v het;t)kdoc+gyyc 5 /:electric field is directed straight upward. What can be g+n y 5g v/c:eothyt5d;.clk)said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near 54o f)lsy4 xiy.*tdzs 6 rn:fgan electric charge

  A positive point charge is enclosed in a hox4h ,s5awkchrg; 4w)yllow metallic sphere that is grounded. As compared to the case without the hor5; hwhk)4 y,xgws4acllow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in staticr*b mw:q(9w, blqot:u equilibrium.

State Gauss's law.

  The charge carried by one electron isgd -r.79ofwi f $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2b.r8 * udgz:px.00 mC. How many more protons than electrons does xd.ubgp *8z:r this piece of plastic have?

  What is the charge on 1:lu , ju5atmw99 uwcrfnpxb5)i:j9 ,t kg of protons?

  An atomic nucleus has a charge z duw,0pwqe , tzyqkn.;8t9c2 of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sep: enx* l- -h8hcx/dkdewb pm;+arated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the lnh;bche *d-w m/ :-k 8xepd+xelectric force between them?

  A 1.0-C charge is 15 m from a second charge,z/p 17w/1 ovs7oms8bl*eny bi and the force between them is 1.0 Nbi18o m1/v7/wb*opsesln zy7. What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. v qjwt)13*g8 h+plpj jHow far apart are they?

  The force between a wd cs3-5b4 0yfqully3+frg b) $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apgn eoqxrn:vr 9a5, :;g9il:dqart, experience a 1.0-N force. If they are moved to a new;v n oleran5,: i 9:qdgx9g:qr 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-axi8oi kjb sy795tuqk i,z4 )2iieskt:u1s. The first charge is at the origin, the second zt,u iy:isbuoks7 1iqt84i)95jkk 2 e 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 x8 cngiu-e y01za1k4eare placed 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. What are the magnitude and direction of xi8 ekuceyz- 0 na11g4the electrostatic force which acts on the charge at the origin?

  Three point charges are located at th,5:np+zpp 6jrdujg4j / cvh u8e 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 magnitu/ ju6upv g4j85zr,+j: ndcp phde of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the cent.s9+et 2exqy her 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 char y+s.ex9h2qetge 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 =/en;a:x7nja n 5.0 nC is at (0, 0). What is the magnitude of the net force on 7ae/ an;:j nnxthe 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is atjip vaysl2 qe8ocizz* 1g7 vvb+q9(;4 (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 n8;azzb gvyqelpc+q i917 i(2v4ovs*jC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equila.eiqsjxk 28d ;5yc;iiteral triangle which measures 30 cm on a side. What is the magnitude of the electrostati x;yqs;ckd5i8.iij e 2c force which acts on any one of the charges?

  Consider point charge1h mn5vfk,5czf*wg7 i s of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it g 5hm fv 1,k5*7fnciwzbe 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. Wh1xidyxxlo u l fd+p+un5: rxo;3u5f32ere on the x-axis can a third charge be placed so the nlfxdu32x xo n;io5u+1: ld+rup53yf x et force on it is zero?

  Charge +2q is placed at the origin and charge -:7rf+ gsob w-uq is placed at x = 2a. Where can a third pofgo + rsw-bu7:sitive charge +q be placed so that the force on it is zero?

  A copper penny has a massw)iq 4 onre fgcsx8-1l(+j 1/5iuvhlfi5g-hs 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 up againsh4zac*.d61 q v:xngc gfg+b:n t the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the pr 4dah.ng:zgv+x f6n:cb *1cgqoton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thref.ba3q,k f4 uzads which are 30 cm long. Both are given identical cha3ffab.kq u,z 4rges, 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 the magnitude of the electq2xq kkwlef0sbg+dl9 : e+-f 3ric field at a distan0 gf+9keqs +f2 l3wbkd-e:xlqce of 1.0 m from the nucleus?

  What are the magnitude and direction 4 yg(dxwj,m37s9te mwm:wb,5x :tb n pof the electric field at a distance of 1.50 m from a s3jtpbx w, b mntgw4(9dxw,e: mm5y7:50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of th*lzjymuupx- g,lpd8s() u3)ue electric field at the locationgpuusz lup,l*j)ym-u x8d( )3 of the test charge?

  A 5.0-C charge is 10 m fk*nhn dom*4- grom a small test charge. What is the direction of the electric fiel ko*gmnnhd*-4d?

  A 5.0-C charge is 10 m frchfa0d:+,z4a.agxl auw9 r0t om a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location o00+a9rf :dhcaglt 4, axw azu.f the test charge?

  Two point charges each have a value of 3.0 C and are separrw9 9(v,kv 3mkp56ngnxjf*j1 qv5rb7 t.xwixated by a distance of 4.0 m. What is the electric field at a point midwn, .(f1v jmr *x9k7w9vjvnk 5pg x5x36bqrwit ay between the two charges?

  A 5.0-mC charge is planmec7+g1uwty1yelr62b n23 yced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is+lty1261ey2w cme3g uynr nb7 the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -w(8a kewp,8s1b nkj( j4.0 mC charge is plksbp(8ja (1 jwnkwe,8aced at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC jaub2k cm.ze v /,u:ahq4 ,ic2p loq.)are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between thqz.hqkj,,c al. 4)cob 2 i:2/epuumv aem?

  Three 3.0 mC charges are at the three cornersdsv8(w7dw yi/i 54q szoj;2wa of a square of side 0.50 m. The last cornewz 872jy4 /5wdss(o ;q adiivwr is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placedfe0tkj5e(cvzqve; upqq2.9v y53x0 p 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 ext;vf0 u cp(e.jz92vv5e5qke 3yq q p0lectric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC wf rhx( pz1j1w5 (qshfwemr2 *.hen it is placed in a uniform electric field. What is the mwrre(sjp15w* (fh m2fq hx. z1agnitude of this electric field?

  A particle with a charge of 4.0 mC has a man;2stv p)fh f*ss 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 0.1lz5d(h6gdr9 ,ue h9jc 20 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it dh9(hluz5r,6 cejgd9to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball iscd/rfl-9ai4(k) 1vq6b pu hnj)3nlro placed inside a uniform electric field, and is suspended against the force of gravity. Wha4)i)nal-l vro(k/ jph9 3n 16cfqd rubt are the magnitude and direction of the electric field?

  A metal sphere of radius 10 -wn04pz7aole cm carries a charge of +2.0 mC. What is the magnitude of the electric field we p-ol 70za4n5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the e; 7x9mwnw. ibbn7 an(plectric field 6.0 cm from the center of the w(7axn.bbn79p ;n m wisphere?