State the law of conservati)g;moqy w 19xcd.ths/on of electric charge.

  Is it possible for two negative charges to attdf3p ed*)i i+yract each other?

  Is it possible for a positive and a negative charge to 02t8p1 vvrjo vattract each other?

  A glass rod is rubbed with a piece of str+ 6eq tbfw d77+q2up5ipqe 7ilk. During the process the glass rod acquires a positive cha tuq6wteeq7p7f27i p qr++d5brge and the silk

  A proton carries a

  The model of the atom showoeyj9i f/i v-0s a

  A neutral atom alwayzvglcxi98yvh:w h ,15 s has

  An atom has more electrons than protons. The atom isexh0i .4y-,c6,tpczj vd r rq7

  Materials in which the electrons a0.-u5f (ka mfbhm:ic7qf;x ns re bound very tightly to the nuclei are referred to asaf. q(cmkh xun s5;f:fb07im-

  Materials in which the electrons are bound very loosely ojdwvac-.v os ay cffx:;h.04h/m6 /ato the nuclei and can move abaaxvdo/.co:ma.ff6c0 h -/ s;yjhvw 4out freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal sfe1ckm e8l3, f*bbh0 bar. The end of the metal bar farthest ffe 0b,8mhf3 l bcsk*1erom the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They ar( uiua1zf7n (r*fka6ce placed near each other on an insulated tabufa6n( 1*a7 zukif(r cle. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chark; aqr o,ezdx4/do8; vge an electroscope positively?

  An originally neutral electroscope is briefly touched w6 p eg3, jvdy.li 974f/uec*hgz zn tnfg)2ln:ith a positively charged glass rod. Thec2 :d/ u ,git9)7le6n. epn4*zlhgzy3njff gv electroscope

  An originally neutral electroscope is groun(gunp o6j 6ji3w m6st,ded briefly while a positively charge t(j6,i3 smgojp6n6uw d glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral eaq a u0f1p8xf4 s7/wpllectroscope, and the leaves separate. Then a negative object is brought near the elqa 1p8apus x0/w7 ffl4ectroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on vfs 4)p bk b,wjm-x4s8an 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 nev -sx8,s4)k4pwbb m jfgative 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 constan, ccoe 5ob+4mmohp 8a:92hsyht $k$, which appears in Coulomb's law?

  Two charged objects are separated azuhlc* 4v0b ;by a distance d. The first charge is larger in magnitude than the second charvb a*u;4lh zc0ge.

  Sphere A carries a net charge ,ndyxqt (;s cs0d 84huand sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrsnx 4sq 0cyh;u,(8dtd ostatic force between them?

  Two charged objects attract each other with a certain force. If the chq1 lq ktw *e6oes9l:*garges on both objects are doubled with no change in separation, the 6q 9lq ekt:se*g*l ow1force between them

  Two charges are separwjb n9) -;cz gw(adqn3ated by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a dd-3wg 9q(;n wzbc aj)nistance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happelcp -hdo 8u6 *cp8vtutu( /g(f6 t)gsqns 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 vavut-c8 gut/dp g *)o 6uc6 8f((tsqplhlue? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. W-tjpt :wijnwc+h3 s 30hat happens to the magnitude of th0ns tp3j-wc+jwtih3 : e force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are s1ws:m2gcckai /hps x(.7i) iq eparated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed necms2a(.7hg :ki1pcixs/) iqwxt to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whvby yhp 9lek6 1gc + -uh0cgjjys.ms006(*mu hat happens to the size of the force on the proton if the electron is hybyv 0g1jjh.u u0y6( scmem6p-kl g+c* sh90moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second m qi,)4ldpf7)clpq.npoint charge of -Q is placed at one of then)p lpmi)qc ,.7qlf4d 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 acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid qe.i;0mktrz.b 99 mtvof an equilateral 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 t0zr9mv.im b keq9.t;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 vectorj)9j ll o:0wx*xqvhw 4?

  At twice the distance from a point charge, theweq0 o)jwws4gh(c49d/5dib j strength of the electric field

  Is it possible to have a zero electric field value between a negative and positio 5 od-lgoc73ive char odl3ci-go5o7ge along the line joining the two charges?

  Is it possible to have a zero electric fieldyl +r.y kq8/re value between two positive charges along the line joining .r8r e yqyl/k+the two charges?

  Electric field lines near psitive point charge6;bscj i:3g f rotg++ws

  The electric field shoi ff2l4h05 7xq cxfsjq2wa8-dhr 7/hpwn

  Can electric field lines intersect indw d-wl1 e-+jg free space?

  A solid block of metal in electrostatic equilibrium is plrzlwh- ;q/b m tplz9.+aced in a uniform electric field. Give a statement concerninth.p- bm9/+l;z rqwzlg the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eas *+7brqrj-er0,o-tuho f7 nsch given the same charge, the electric field (E) midway between the center and the surf 7 o-,r0 *-e+fs jsrunqobth7race is

  A cubic block of aluminum rests on a;:-7y y zlkotve-:.fo.y b jie wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the chargezfoo-jy .;: tik ye-b.ly:7ve on the block's top surface?

  If a conductor is in electrostatic equilibriumk1e6 i3sl*r9cz)zyg-r-p yxuq* w/e y near an electric charge

  A positive point charge is enclosed in a hollow m 0: c/3q4vnfs(wj:kznbl5 kin etallic sphere that is grounded.k (:cf:nbjkn /lz nwsiqv0 534 As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of condu :p ,ej1 bd-gdta7id:q v5ee+xctors in static equilibrium.

State Gauss's law.

  The charge carried by one electrojyvdx2 v6a;:o zyw 77sn 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 ne rb /,nlr,xra,t charge of +2.00 mC. How many more protons than elect,,anxr /brr,lrons does this piece of plastic have?

  What is the charge on 1 kg of pro1he4h5dilis0g 4lo, ar. 0twttons?

  An atomic nucleus has a charge kbjl 5sp ,()r(an auo1of $+40e$. 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 tq5i,e2 ryp z(-4.0 mC, respectively. What is the magnitude of the electric force betwe2pezt (q5,iry en them?

  A 1.0-C charge is 15 m from a second charge, and the forceuj1 u*uez .l+e between them is 1.0 N. What is the magnitude of the.1+u e lj*zeuu second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart arekj.m 3 uu6en,8:hai b ur4vw9w they?

  The force between a tx0304 , ae mj7dk2a il0pgoco.lt.mt$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.vfc) fimhu5k d b,h;08tz3sfbt-(uoqk ;qo7)0 cm apart, experience a 1.0-N force. If they are moved to a new sepabo) ud(-7qmk8t3qfh5f b ztuc0o),sf; ;vihk ration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC :suvqr8 1g3y5r vns9dare 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 ma9gq8v uvr3sd ys: 1nr5rk. 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 c i(g .z:ge+ +l8oupqar,veb7mharge of +2.0 mC is placed at the origin, -2.0 m C to the rimei (o,gr+lez: 8qgup a v+.7bght at x = 50 cm, and +4.0 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 located at the following positions: Q1 = 2.00 mC d oe(zu*, gj2uat x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What ej2(g,u*dzuo is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is plv;7ritd4xiz 9 aced 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 electrostati794itd;xr zv ic 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 (0.2;ep e f2bfmg/x rc0azh21.ll30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What i .;2zf2g1ceh/2mx be0r pf llas the magnitude of the 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)7kuznkrlg o; d24a6o*cxu(*h ; Q3 = 5.0 nC is at (0, 0). What is the dire *7kolhr; n k4a*(dzuxc2o g6uction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC od,nrz o ,6d 5ay7x1icare placed at the vertices of an equilateral triangle which mea5i6ac,oy7,dd 1zoxnr sures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separaj ;2i(tme 1 xsk(xzg7rkz+55ufgxrg -ted by 3.0 m. At what point, on a line between rx;ez -kgj57u r(sxmx2gzf(5 k1 tg+ithe 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 j7m2ufxz4h 8g bs gs)edb *p34.dvj.pthe origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge beh3df j.b4p.*zu)psev 8g 7 xgd4b2jsm placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q6 ojjn(t9u u5coycx)p9k5vv( is placed at x = 2a. Where can a third positiveup5 cckvovt) (5oj(9u6nj9yx charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of.6qvqnk hn9c,3u jj/ xzmv5.j $4.0 \times 10^{12} \; electrons$ 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 3hoeq ji4y0jw3 h2:duthe force of gravity by the attraction of a fixed proton some distance ai42w:hduj q30ye h 3jobove it. How far above the electron is the proton?

  Two 0.20-g metal spheres a utsx 0ysme5.y77srb;re hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart u 7.x; yeu s7ytrsb05msntil 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 elej.9uo2j7gq cmyog33k ctric field at a distance y72ggqou.j3 c9j k3 moof 1.0 m from the nucleus?

  What are the magnitude and direction of the electric6a .*rb;7p q 8cp pgnibkfs3b3 field at a distance of 1.50 m from a 50.0-nC charge?brc.3;ab8k6fg37p sqpip* bn

  A 5.0-C charge is 10 m from a small test char60m48 9,sk1k wkal lflqsm u,ige. What is the magnitude of the electric field at the location of the test8 l4kfs 1,kkiu q0a6,ms9 wmll charge?

  A 5.0-C charge is 10 m from a small dy)m+ :nru2msf*;wattest charge. What is the direction of the electric fdsm+)mta 2y:*wurn f;ield?

  A 5.0-C charge is 10 m kek9badb ;1 a-from a small test charge. What is the magnitude of the force expe1baa - ke9;kbdrienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value o t omw(a:6hb g1a10evsxz8 e8mf 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the twsm8 az0we8xv6me ( ah t1g:b1oo charges?

  A 5.0-mC charge is placed at , 7h h4xexwq8xthe 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fielhwxhq,e8 xx4 7d at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of aaoo,u 3xjdp9,3rv, ,ggh t6gu meter stick and a -4.0 mC charge is3jph3,u, xo ,tuggo,a 6vr9g d placed 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 are placed at x = 0 and x = 0.20 m. Wne )f * j,;avwkcl0i poq2z(d,j9o 9ixhat is the magnitude of the electric field at the poe,)oojj ,0p 2qkld*; vi9x f cinawz9(int midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0. b 3o*sxzq-au)50 m. The last corner is occupied by a -3.0 mC charge.q asxo* -3zb)u Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners o0r c ;hbp8kle93(*epulnse,g f the square as follows: +4.08bgl, ;ph e n(uc*r30ee9l psk 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 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 7 srm4wevx 8h8uniform electric field. What is the magnitudehs7xmw v 4r88e of this electric field?

  A particle with a charge of 4.0 mC has 8-os 2tj 0tpyoa 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 +(n t.hw3zl 7 suze(axan electric field of 6000 N/C pointing downward. What charge xs(e+7 . w(3znluthazmust 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 ij :jk k( gm+8icz;f+vds placed inside a uniform electric field, and is suspf8+;zc(g:j+ km dk vjiended 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. Whatwb/o4- o vpm h(mm0q.faw5a6r v*4 ngb is the magnitude of the electric field 5.0 cm f(4b54 wo.r/nmm*6 mah0p f -wvqvgo abrom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC.i2y zjxsei 1m: *up,e7xsj)( w What is the electric field 6.0 cm from th2w ius *(j:e)e zsx1pm i7xy,je center of the sphere?