State the law of conservation of electric charge.,wm5 h-cl9g4ed swlyk: 4ld:d

  Is it possible for two negative charges to attract eakjokqu4 s h1-d 77f5untuv8 b(ch other?

  Is it possible for a positive and a negative char ;s9jdocs3/on ge to attract each other?

  A glass rod is rubbed with a piecez nq ztr36 4m0vd/fs0f of silk. During the process the glass rod acquires a positive chargfqtm4ns/dfz v 300z6re and the silk

  A proton carries a

  The model of the atom sho0 -xivy1 -abtcws a

  A neutral atom always h6xsc6jt9 siz6 as

  An atom has more electrons than protons. The atom i8o n v*zsn,di,s

  Materials in which the electrons are b t. 5uvwfxp/j7aqc/ o:6 tdkt5ound very tightly to the nuclei are referred jv.uf t 5qt 5dpc:k7 w/x/tao6to as

  Materials in which the electrons are bouny;-twxj cyx7rixg( (-d very loosely to the nuclei and can move aboutx;(c iy-(7r-j tgwyx x freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged pcy(g.+a+gpcmetal bar. The end of the metal bar farthest from the charged rod will be ch+g.pgy (cc +paarged

  Sphere A carries a net positive charge, and sphere B 9p7u q;2pxa n rlg)p)zis neutral. They are placed near each other on an insulated tablanr;7x) zp u g9)lp2qpe. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an el;uckc; * gwc0 eoj/vhz4jj1oizap958ectroscope positively?

  An originally neutral electroscope is briefly touched w:io s c2gfiir;jj j-,*ith a positively charged glass rod. The electrocf;2jrji i: ji *so-,gscope

  An originally neutral electripb g2be*8y 0foscope is grounded briefly while a positively charged glass rod is held near it. After t b0igb2fyp e*8he glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and th aywfk 2jl0lxs k41.,ce leaves separate. Then a negative object is fj.c2wa4 k,kl1lyx0 sbrought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral9 z,o vrw24donuxg27w 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 no2 ,rnvzogo 4w2dxw97 ut 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 Coulomb consq4jgt; d(lgw+q +*ha ctant $k$, which appears in Coulomb's law?

  Two charged objects are separat+cwyh cw09 jq:ed by a distance d. The first charge is larger in magnitude than the second charqw0y9 jw:h+ ccge.

  Sphere A carries a net charge and sphere B is neutralw:*iiv/8,z;m ek tffe. They are placed near each other ;,k :8ime /f*fiwt zveon an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. (jpi4; m(sh 7b9njim-v1mft 7pf; ,dct og:fi If the charges on both objects a;i;fct7jd, m97(vmo4itg bpf(pshin: j1 m- fre doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces of (eopj kete 70o pe15r1F on each othereop57oe1k ep j(1 et0r. 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 force F. What happens to tho(:8;fzl3sn lj 4di mce force between them if onefnmj :3cds;li l(8zo4 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 happe9tuf7j yu gd24um 3b1 mj/bn.gns to tm1 42fu .my9g n7j/ jgu3budbthe magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a pro aqb0azlpqf 906 5gv; l5exn-dton are separated by a distance of 1.0 m. What happens to the magn 6faxgn-zelq0590 ;blq vp5d aitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated byc hrnu4boxqr1rv 1 c; q881;da a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the prn;coqa14xrrrc1; v 88bqh1 duoton?

  A point charge of +Q is placed at the cen;k ayxcsf)kg f7fn+, /7l)tkq ter of a square. When a second point charge of -Q is placed at one of the square's l7 tk f+yf/,g s;k))nx7aqcfkcorners, 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 equilaterokcr , gt86:b inw5nt4al triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic for nn i4 ow85tbtgc:,6rkce 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 following is not a venv8 avl*5y1m qctor?

  At twice the distance from a point charge, the strength of the electric 3u-) vzx q48ag7.q 9ftprayph field

  Is it possible to have a zero electric field valub+d +lo yt5*wye between a negative and positive charge along the line joining the twoy b *yd+t5w+ol charges?

  Is it possible to have a zero electric field value betwee ,a(p d ms54,gsacvcr hcqlje3l +,s/;n two positive charges along the line joining the two charges?pcjlhr3c;,(q g a+5ms4, /secs,ld av

  Electric field lines near pgqf /dt qajjc(t4(6 iwy )-i,esitive point charges

  The electric field shown ar* qax au4*f ss3txw,0(,ctpxtt 8 y+

  Can electric field lines intersect in free spactor iac9s695ve?

  A solid block of metal in electrostatic equu97bjfdqhx * yh-7sv) z.reg8ilibrium is placed in a uniform electric field. Give a statement concerning the electric field r)9-s.gbdzh*y8hv q j7xef7u in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gi5x3i7q e 0ue 8ja:y vd9eli;j.mpcl5s ven the same charge, the electric fie:5.0jxj8edlv pluac7esy mi5 e;93qild (E) midway between the center and the surface is

  A cubic block of aluminum rrooh x(85 0,plte 5egnests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the e(80ole5pg,h5xn otr block's top surface?

  If a conductor is in electrostatic equ 93w6e2 i)3wpkpu qpvp jxs3x4ilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic spherecyvznb7+ b-w4 c.8emxsc-6u x yt :0ij that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above tjnu7 4i:mxw0bsxyv8bt + zc-yc 6ec-.he hollow sphere has

State three properties of conductors in static equilibt2o lf ts5b6lw8*6v9 /pproakp e:9fxrium.

State Gauss's law.

  The charge carried by one e lvdf v ,/pbkd8)o6ne0lectron 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 pro*q(.rc (ei;d afig 4titons than electrons does this piece of i;( c(.*gieafrd4 qtiplastic have?

  What is the charge on 1 kg o.zx p+nlj*+/ rps7h iuf protons?

  An atomic nucleus ha*/dn *wzb16+q,voighssn2 f xs a charge 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 valx.q*fv we kq r 26eya) q,hc7*,ondtz,ues of 2.0 and -4.0 mC, respectively. What is the 2yaq,tx hvez,q, 6 c )oq.* fr7kwned*magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a secon2 p:+s8sw kxvwd charge, and the force between them is 1.0 N. What is the magnitusxwsv8: w2+pkde of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are the35 d7szb17qa-pm+ iyy b+oz oty?

  The force between a e wk5(x:w.xsi$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experie8ux** vbfdi0p*,v z z1sars+ence a 1.0-N force. If they are moved to a new sep*rp8 zzf0bdea1isv+u , v**s xaration of 8.0 cm, what is the electric force between them?

  Three identical point charges of lb8f; ny8jbq40m+p ze2.0 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 are the magnitude and direction of the electrostatic force which acts on the chqmp4b zbjy;0l8n8f e+arge at the origin?

  Three point charges are placed on the x-axue,o/ v(u twcw,)8q*le4 waxtis. 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 mlxc48t qw,)ut o*(e wevuw /a,agnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC z3peq q6ed8 wnpuk5 3 .mx+eh3at x = 1.00 m; Q2 = hqmxqw8d.eek3 3e3 6+upnp5z 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-dl*zw b0 pkr7 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 -Q is 0 -rpb *zldwk7placed 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 = 5.0 nC is alu+. (p 5tnu6;sqil cat (0, 0). What is the magnitude of the net force on(pac; s+. qul5ilu nt6 the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 4tivtf.t 1d i51h0v vwvq)ru+m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 5d1tvrthuw04+f)iivv. tqv 1nC charge?

  Three identical charges of 3.0 mC are placed at the vertices wdv 4t9umk, v2+gk4liof an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the char,k4wmduvg42 ti kl9v+ ges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. A/v2g ot2p gjqa60m 5fnfc) md;t what point, on a line between the two charges, would it be possible toan2/gt)d065 o2fqmmfp c vg;j 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 anui0lo wc0/wn xu4nq0 je:n:dcfn, s 6.d a +9.0-C charge is at x = 4.0 m. Where on the o0wiu0qnn46 cj/:xf0c ln senu:wd ,.x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin d 882gqnr4gn5 qbhri0uoa o: ,and charge -q is placed at x = 2a. Where can a third posu8r28 ni4bnq5,hd:g0r oqg aoitive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tota;ojh.b yj.yjz ,uzt6bt9e.u, l 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 againv -bc xl hj./g,;)uxo(m-ia1etu8pgfst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the proton1i l;fox,hup uj.emxgb-g ta()cv8/- ?

  Two 0.20-g metal spheres are hung from a common point by nonconductindk i6nioe(f )6g threads which are 30 cm long. Both are given identical charges, and the electroikn oied66( f)static 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 x+:0ah/yjo;0t3wznoezha8o is the magnitude of the electric field at a distance of 1h: zohz wj0otx0+a 8a3 /o;eny.0 m from the nucleus?

  What are the magnitude and a-bu6cs2ap qg-oyz,rgf ( y.+ direction of the electric field at a distance of 1.50 mgu-, a yrz o2pafc.6s+ qbg-y( from a 50.0-nC charge?

  A 5.0-C charge is 10kgr43yj crs6 6x,z8ekc-qh i yj3j y/2 m from a small test charge. What is the magnitude of the electric field at8k-6q6jxg/ 33yrekyyjcrcjsh i 4,2z the location of the test charge?

  A 5.0-C charge is 10 m from a small o*-ytium ,qty34 wi(bpn gh; 7 )oaqm2test charge. What is the direction of the en tmayq-og 4mo,ut 3*pqi7 bhw(i)2y; lectric field?

  A 5.0-C charge is 10 m from w. 5d3t7htjteq :*n yrg0r t;ua small test charge. What is the magnitude of the force expew dt.h yt;jrgut5 37qr* e0:ntrienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each9// t4tafciz+) psff h have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway 9/cf+/)f iphftats 4z between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter syzon l(n+dimv9 21)3h xcn;o0vu uc9dtick and a -4.0 mC charge is placed at thndu ulyd29cicv3 (h9 om n+z0nv1 x);oe 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 ,2ne 9k2ra e0 ogngk(gcm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm 2ng 0eokagnr g(9k,2 emark. 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 mzcsudan u+j;-ubf28 1xo.u+ nC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field atb+znus2c ox8nju;a uu -1f.+d the point midway between them?

  Three 3.0 mC charges are at the three1, map70elfoc corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mofm1c,l0 a p7eC charge. Find the electric field at the center of the square.

  Consider a square whi*/rjnilu59f d:5m m:x.zh adwch 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 magn5nm9dfurx/hm:jilw .5az *:ditude 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 in a uniform elect/l21r5u l 1j0lanphnl ric field. What is the magnitude of this electric fl 0ljn anh2 /1rl1up5lield?

  A particle with a charge of 4.0 mC svczb*u6 8*assva6 9w ns.au ,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 elefm qtyl1ph: dg7ko7i4d:+w r9ctric field of 6000 N/C pointipm+ 7lq::i dwtr9d fk7yho41g ng downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The balc2*e ghy43 bdal is placed inside a uniform electric field, and is suspendegd c34bah2 ye*d against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnitch/s 38dbt zt 3fm,ff9ude ofc9fszmt, / fb3 hfd8t3 the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 p(-au54i )uq + orfee 2/.orwkudc ,usmC. What is the electric field 6.0 cm from the center of the e5i2)uq/u( +ou,w rps.e d4a -ukfrcosphere?