State the law of conservation of e fo/ 3kyk bgb;r/8ohr8 jz.mh7lectric charge.

  Is it possible for two negative chargeqi )9rgrvt8 ztnna(w ,(f 8m8vs to attract each other?

  Is it possible for a positive and a negative cd3a hu17p/0rv * uuhxzharge to attract each other?

  A glass rod is rubbed with a piece of silk. ra:t 5ld:bcqvy89b+ n During the process the glass rod acquires a positive ch+nb8d: ayct lb5 9vqr:arge and the silk

  A proton carries a

  The model of the atom jzrl hmg) j..*ce j1.ushows a

  A neutral atom always haskl((op f0tcy*

  An atom has more elecjb2a+ (te0kb etrons than protons. The atom is

  Materials in which the electrons are bound very tightly tqnbu 9; jx.*j93kam fz-d d(sco the nuclei are referred to a 9cz;*mqj.xb93( dk j dsaun-fs

  Materials in which the electrons are bound very loosely to the qfhix slb;2 z,w v*2e7nuclei and can move abowi2sfx h,b vl;7q2e* zut freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged m5blxcc*u)g8 o .x+mwo etal bar. The end of the meuwxg ocx)o.cl8*mb 5+tal bar farthest from the charged rod will be charged

  Sphere A carries a net po hat7r9 v:s*0 iinm7hqsitive charge, and sphere B is neutral. They are placed near eachtv0i7himha:*s 7nq9r other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope part g m5nxp ,h,*k9c4yositively?

  An originally neutral electroscope s(r6y0su4v7pls7e ...p9z wqmpuaaw is briefly touched with a positively charged gev7a a ..s. pm4lzs7(wu9ypsuq 0 6rpwlass rod. The electroscope

  An originally neutral electroscope is grounded briep-si/j-hnjy7; p va*rfly while a positively charged glasa;rnpjv 7- /y*ih -jpss rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leavp 9wwp5 7lb0q:a -6il :agtzyaes separate. Then a negative object is brought near the electroscope, but does not touch it. Wha: :tz79pwa60yqg p -abiw la5lt happens to the leaves?

  A large negatively chardgtm u*ee*. j74/vw7rv:khsz m zf ,v-ged object is placed on an insulated table. A neutral metalt7z/*-hved4ms vg* k zfwj.ev,m7:ru lic 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 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 consta a vz3kc5xz3b-4kse2 mnt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Toq3(fgc v2 t:9ht u,l+*1p)gsd ry vyche first charge is larger in magni:o c) lvv3d*g 2+qtpuy1t,yhcsr9fg( tude than the second charge.

  Sphere A carries a net d71 0liby7 bihcharge and sphere B is neutral. They are placed near each other on an insulated table. Whibi1 hidb70 ly7ch statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges o m)x rys 3(c,xvsj/vr(n both objects a rx( r3s,)smvvyjc/ x(re doubled with no change in separation, the force between them

  Two charges are separated by a distance d and et: v+adxj8+rbxert mutual attractive forces of F on each other. If the charges are separated by a distance of dt++j:xar b8dv/3, what are the new mutual forces?

  Two charged objects a6es6 gun7h z.5mn+yrtttract each other with a force F. What happens to the force between them if 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 .r m6 enzu+ts5 7ng6hyto

  An electron and a proton are separated by a distance of 1 7jrihf, 7q8zp.0 m. What happens to the magnitude of the force on the proton if a secon hpi7 j8q,fr7zd electron is placed next to the first electron?

  An electron and a proton are separated by a distancezn/vrx*93ge l-z r,ok of 1.0 m. What happens to the magnitudeezkg9x/-o, rvl*rn z3 of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are lq1 0,d8myfz5-: o mv*nbst ecvuyz:(separated by a distance of 1.0 m. What happens to the8 0mcv1y vyz lbz5-d*moeq,st u(fn:: size of the force on 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 b nuutzg44uv3 1 -n2z2+ zjesbsquare. 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 act g 4 2b uut1sznb3ezzv-+ju42ning on the positive charge at the center of the square?

  A point charge of +Q (c )hdccf7ie7is placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at ( ) fd7cie7hccone 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 the other vertices?

  Which of the following is not a yg x/ix8oi6r nv-i5.hvector?

  At twice the distance from a point charge, e il0xds8cn x51a. 4nothe strength of the electric field

  Is it possible to have a zero electric field value between a negative and posil/zc)nredoos a240/9 o/uanf-dhor )tive charge d/9n ) / )l/rarooh0dz -nfc4osoua2ealong the line joining the two charges?

  Is it possible to have a zero electric fiezc tc.ia82n *qld value between two positive charges along the l.tn8zi c2ac *qine joining the two charges?

  Electric field lines near psitive poisp)cgs )x nkz+-,d( cint charges

  The electric field sho qno,,wyonhe3xcby0p ts5h;i 1(z6 g(wn

  Can electric field lines intersect in7h rjl*2 w 1zuotasb.er+y5+g free space?

  A solid block of metal in er1nj 5nx*)(utwwup:v lectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electri*pr)n:1 ww u ut(x5jvnc field in the block's interior.

  If a solid metal sphere and a hollown1 :2jt4xpwe sjmk+ 7n metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the tmkn es+4jp17n:w2x jcenter and the surface is

  A cubic block of aluminum rests on a wooden table in a rm9bk;3fxzw a6x +ocxf8v*ev *egion where a uniform electric field is directed straight upward. What can be said concerning the charge on the blockxxz+ 6ck v fvm*e93;x8ab *owf's top surface?

  If a conductor is in electro(c w e6rs g mc*pjg8w-lc1+o+mstatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic spherecj h 9tr(p73s souo d:u5ayh +)rb+;ns that is grounded. As compared to the case without the hollow sphere, the electric field atb9r)+7ss: 5(s noc jth3;upudhryoa+ a point directly above the hollow sphere has

State three properties of conductors in static equilibrium.y2s8aa uh*:h(*o1 rp 1dyjvvt

State Gauss's law.

  The charge carried by one electron1b n)pv1rj 1b/5 m;llhulbx s8 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 tdn05* stua4f 7x4d pgmnfu91+3 z vnlmC. How many more protons than electrons does thif p+dt n9 a4ls*z3m5n d0uvx417gtfnus piece of plastic have?

  What is the charge on 1 kgsdg;hiyj jaf2:x i 921qiu7e 2 of protons?

  An atomic nucleus has a charge v9 /9omy4xn+)txqx k hof $+40e$. 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 2.0 and fq a3k e8:/nn/c:vfwcyj w ;v0-4.0 mC, respectively. What is the magnituwvy:j;fe n kc:nw08v/ /fcaq3de of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force 83, ozm 1rmyb6qum d3gbetween them is 1.0 N. What is the magnitude of the secon 3g6m m3b18dy urm,zqod charge?

  Two 1.0-C charges have a force j zxy0mio.x-..o) nsh n:eg h8between them of 1.0 N. How far apart are they?

  The force between a 6q hzcdtqw ,o c5e-g,hik6u 7c+ (7gof$30 \; mC$ 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 1.0-N force. z5 t56y;zb sgeIf they are moved to a new separation zbt s5;y6 gz5eof 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed8 u*.lx mabhc:da5d9n on the x-axis. The first charge is at the origch* abdm5:8dl9una.x in, 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 the origin?

  Three point charges are placed on the hz ml/ov+k +/d.fuuzy2dr8vs 6c38xox-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 mauz6rc+zk2 8u8vdsoxvm fh3 /. dyo l/+gnitude 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 ablu (0zor4dan) 7v kn w )y,5ehduqb;,t x = 1.00 m; Q2 = 3.00 mC at x = 0; Q(o n,57kvuubr0d la,d )zhe) wb ;4qyn3 = -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 of a square, and a4b9g 3u l1z6cm)t thfq1qj;f /kpks/woq -b h3 second point charge of -Q bf1)l mhoqw6q;kz43p-u3f/ s9kqbgt t1 jh/c 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, 0); Q2 = -1.0 nC is at (0, 0.1gb+kne8/2oq ale uke,4p ;7j +fpp2o n0 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of thk 2 ef oeqo+,pa 8gj+;/u7penpknl2 4be 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 2a8lvbz://; enjz*frj c ju w9= 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC8:vwe9/j*z;ul zj j/2nr cabf charge?

  Three identical charges of 3.0 mC are plqeat9 ifp 3.-vsaik wy51)b m*aced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force whicpsw.9a*53vefi tba-y mkqi) 1h acts on any one of the charges?

  Consider point charges of +Q and 4m * +aoabehlwp)vz-ge (2e2b +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on a+()v emz2lep4 abbw- * geoh2it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C ch) 9 fry,xbo-gfu. ag2hg-.kv darge is at x = 4.0 m. Where on the x-axis caf,oka 2.)y ugvg-9hd gf .r-bxn a third 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 caxv+p o 2wzg.- 1nj0r*s.bywi qn a third positive chargez+g n-w.i b2sy1rx o.j p*0qvw +q be placed so that the force on it is zero?

  A copper penny has a mv,k1ubyt 8yt7hw qn h4 .6l4jvass 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 against the force of vhlh w8f +j-cac (6z9ogravity by the attraction of a fixed proton some distance a- 8alfj h(hocz+9wvc6bove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common poinft8 h72 zqekt6t by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic reph6kze2f t7qt 8ulsion 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. Wpkdy)d4ql- m*) ef4awhat is the magnitude of the electric field at a distance of 1.0 l-m*d dqpwyeaf) )44 km from the nucleus?

  What are the magnitude and direction of the elee krfc;v su:.+ zn2;xnctric field at a distance of 1.50 m from a 50.0-nC e;x su2cv. fn+kn:rz; charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudeq9t khkmqird:* 4al9+ of the eleck:9qh4k9 raqd+i m*lt tric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directmkx4cqc:ev s*ht 1x2 +ion of the electric field?s cxe :xh+v1mq2c4tk*

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o6s5zvqz7d k (lt:ph-lf the force experienced by a 1.0 nC charge placed lvt5dz:ps z(hql-67kat the location of the test charge?

  Two point charges each h6 y kwy*yt:ten77oe7xave 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 by*yw nt7ee7 x7:o6tyketween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark8aq gsq -q:ur7 of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at th8ru- 7 qag:sqqe 30 cm mark?

  A 5.0-mC charge is placed at the ngddcsgms q5mg:2 lt(q ob)1m)3 ) hf/0 cm mark 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)5gh3tbnq: s(/mo)lq2gdsd mc f1 )mg is the electric field zero?

  Two point charges of +3.0 mC and -ml/uc tk.*c/x iwdz,.7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnit.*x/zdu.t ccm, /iwklude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the threzkx2 te4*jg7fe corners of a square of side 0.50 m. The last c t7xezf*j4g 2korner 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 tx .eva 0xpl*(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). W. 0pl(tav*ex xhat is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5er2 br :7bu x6c:j(tog.0 mC when it is placed in a uniform electric field. What is the magnitude (r76 jrc:btue :gxbo2of this electric field?

  A particle with a chargt o2 pbho2ew3+s5n: gme of 4.0 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 o2mt(f79o urgju/yn;0.120 g is placed in an electric field of 6000 N/C pointing downward. What 2g ;9 nuur( y7j/tfmoocharge 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 ball is5fubxm4 g6kuj,rzfz d3- 0q+ ,dpw2ih placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnir 5d6ujg,, kpiqu3bw- xz 0dzfhm2+4ftude and direction of the electric field?

  A metal sphere of radlkr+vd:1 9f x ve(,kdrius 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphfx,rrl19k ( v+ d:kevdere's surface?

  A metal sphere of radius 2.0 cm carries a cmpgk3 tk920ogk ekz:2 harge of 3.0 mC. What is the electric field 6.0 cm from theoz23pkm ktk2gg0e k9 : center of the sphere?