State the law of conservation of electric charge. +dzxzt) (rba)

  Is it possible for two negativepti;1k a:oh/ i4d48i 2c yrjgx charges to attract each other?

  Is it possible for a positive and a negative chargjbqzxb4 y 5adqn7b14*e to attract each other?

  A glass rod is rubbed with a piece of silk. During the process t;1./1b e1g m nfab fc//jsakwri:qnx6he glass rod acquibc smikq//w1.nf g:r b/efan16 1;xajres a positive charge and the silk

  A proton carries a

  The model of the atom showh/(0:;nh1 mqm gq,pcova gbm*s a

  A neutral atom always 2kcxsnftjzhd 46 8uc9397zm n has

  An atom has more electrop8 9 jg2px5dsna(k 6gnns than protons. The atom is

  Materials in which the electrons are bound very tightly to the n;e:2dn;nvceev* t yq )uclei are referrvy e*v2)nndtce;;:q e ed to as

  Materials in which the electrons are bound very locla+b x i71m,2x:+zrznd w dt1n j/ko,osely to the nuclei and can move about freel+x+w/71, ajbk, dnc :x drz2oz1l nmtiy within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar.8w.4suy+ 3(miz0/ bel seju je The end of the metal bar fuses ju+3l8j/(ebm ey0z4 w i.arthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is ie2d 8h nyr..t d*wnz0neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is corr zndwer . tdh8iy0n*2.ect?

  How can a negatively charged rod charge an electroscopbt/ tld-srzy)0lh1 ;1ao g8ite positively?

  An originally neutral electroscope is briefly touched with a pjvvr ,bn::2iy; hc2fc.oui+ fositively charged glass rod. The electro :,2;u2b:ff ri jvv.cc+ihonyscope

  An originally neutral elec,dht5 ie 8b-l1drm0p3fox 6 iftroscope is grounded briefly while a positively charged glass rod is held 80b1xor6 h5 ed fd-tpliimf3 ,near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, andr a x(+kvf)hm* the leaves separate. Then a negative object is brought near thv) fma(hx+rk*e electroscope, but does not touch it. What happens to the leaves?

  A large negatively chz ,1; 5jk 26g:quhdsmd:z*g 3j eloppiarged object 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 alongd g5d2 hj*:ipzkze;o 1qp:m js,6glu 3 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 Cvoe.y +b3. fax.; h0qtk3j0gzmvun;loulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largrl.5 ml( k,xhy5ybd/ p-s v-9agd. sbier in magnis,hldv .r5y9 xm /kp.d(ybs-5 ibl-agtude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed n3pl x ofwl/r7tp*k; m;ear each other or3/ofp tk m;*lplwx7;n an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certa6ibn f/74x8 ms 7cdobk(d.vvw in force. If the charges on d/kfidv 78vcs 6b(nmx 7bw .o4both objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive force ee 5gda26,unws of F on each other. If the charges are se6wue a5g 2e,ndparated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What haaw2yw(u l(hr0ppens to the force between them iwlr 0(w (2yuahf 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 to

  An electron and a proton are separated by a distance of 1.0 mg)hhf /p y( 3-hl;ptvp. What happens to the magnitude of the force on the proton if a secondhgtfph v3;()yh/p lp- electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happh.m-h q;drpv ft:8c(u ens to the magnitude of the force on the first electron if a second electron is placed nh.tuq vc 8(h rfm;dp-:ext to the proton?

  An electron and a proton are separati b3na -2la3fnb1u5xra 4wy.zed by a distance of 1.0 m. What happens to the size of the force on the proton if the a32 rb.-i 4xln3ay1auwzb 5nfelectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the cent7nrpbn,t*g . ter of a square. When a second point charge of -Q is placed at one of the square's corners, it is obsenr ,tbn7 p.tg*rved 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 (yvhlus-x(beg3ak 6/z38g hbequilateral 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 ofkhhge(6ag-sb/8l 3 y3zbu(xv 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 ijb,v cv:/+j7p bg+ caes not a vector?

  At twice the distance from a point charge, the strength of the electric b wfx0x -gao1).pq)rtfield

  Is it possible to have a zero electric fieldcjts -6-w(,r+dwh syl value between a negative and positive charge alonhr+l6wdt wcs --,(ysjg the line joining the two charges?

  Is it possible to have a zero electric field value between two positvl)2tw) r89u rvyhlqlz9 n9o 9b6;tvrive charges along z8ywtvv r 9h9nlr9)) l our6;vtq9bl2the line joining the two charges?

  Electric field lines near psitive wwjw 86 ca5ugy5 d/e86nq3wcnpoint charges

  The electric field shown mqjuh :5,8ka*8.vq decrxj 77hikbp /

  Can electric field lines interseczobzze8z/cl4 u -zw6 5t in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifnrli6 + h1+oakbk*ar5): mph morm electric field. Give a statement concerning the electric field in)mkib+rkl 56m*pr a+ohah:1n the block's interior.

  If a solid metal sphere and a hollow metal spher0y,a6cssb :kuh q3r8 txd,)kxe of equal diameters are each given th 83 yqck:b,sku0,r6 ad)xhstxe same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wo5*ke y3rrl ve+oden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfak5 +3y*elrve rce?

  If a conductor is in electrostatic equilibrium.lwb49i +qwwj near an electric charge

  A positive point charge is enclosed i (kls-(782 u/nmtpl6n re eainn a hollow metallic sphere that is grounded. As compared to the case without the hollow 8n u-kn2 ll rt7/m6eins( ea(psphere, the electric field at a point directly above the hollow sphere has

State three properties of cosx,rp2r c+ *4t (zc6myws qz,cnductors in static equilibrium.

State Gauss's law.

  The charge carried bq/ -xlovf48e/ejs9) w f g0tsky one 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 net charge of +2.00 mC. How many more proto0uv* pxef;ptczdh89cqe hk /,oama q8mq, 7*:ns than electrons does thi79 p0 eu /z,m; e f8p8xdkcv:,ahqqacqm**hots piece of plastic have?

  What is the charge on 1 kg of protons? *f 89eqiopqqmtr(8d 0

  An atomic nucleus has a charge of am;wms9h2r eh0+z9h x 3 2gzlv$+40e$. 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 charg8 wxxo5q4z 2ple values of 2.0 and -4.0 mC, respectively. What is the magn2zpl wqox4x58itude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, fkjy75fc n.0nand the force between them is 1.0 N. What is t5n.jkn7f cy f0he magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.b5 d ovei/gh im ,ukn:7m6r80m0 N. How far apart are they?

  The force between a 1ul g; a8abm/w$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, eg/ysq/xt8wi rd)4 i(experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force bet8)( qixws/ g/ eiyd4rtween them?

  Three identical point charges of 2.0 mC are placed on thwuk6f g ja2i9u v6a0zru, 24kse 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 chauuir6260 u4kfv9 s 2 jkwaz,agrge at the origin?

  Three point charges are placed on the x-axis. A charge qxb4cb8( szouw75,f) p erxt/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 magnitud,s 8 /ceqzurtb)7xxop(w5 fb4e and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located a0j s)3*p wfl7twpwj(j2fp ne5t 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 thef0pfwsjplw2 )jntw e 5(73 *jp force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a squnwbax ;e yn )4)7cwrm;.b l1jdare, 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 o)awlj dr;wb)xmyb;1nnec7. 4 n 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(1;m x 6qr- zsa7v3+- oxvzgamhfhp 6h, 0.10 m); Q3 = 5.0 nC is at (0, 0-hm rq3mh 1fz ;(p ghzx+xa6ovsa67v-). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2vr,46 a6hpi2 ga fva7z = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the dirviv26 g aa4fh7zap6, rection of the net force on the 5.0 nC charge?

  Three identical charges of 3) * ejcvovk3q:2;j ;ax cgwy/3nv)ap t.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one op3; 3gy n*2/c:jvxja)wk ;ao q)v tcvef the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what p,3 ;i c2loqgd6r,qc o ,knzyl/oint, on a 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?,k cllr6cy/qq g2n io,o,3;dz

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Wher bk(q8 *a n3*utrtgj0(beg(vbbk8 t6n e on the x-axis can a third c (a be kj0n36nbt uqt8gr(tb gk8b(v**harge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and ch.lf* ci7uuag. k; l3itarge -q is placed at x = 2a. Where can a third positive chg l;fi c.7*.lt3 ukiuaarge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totaly nnyp07gy/* o 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 gra)sh/(esmqnktk qh m3)v3b 83 jvity by the attraction of a fixed proton some distance above it. How far above the electn()8me3 b3 hmkhtq 3svkj sq/)ron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting rw3:efv 5i/ej e,dq:z threads which are 30 cm lone ew3:,/qv: r iz5fjdeg. Both are given identical charges, 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 electricm ,flhl8e(1d.:tm q 4sdc l1ze field at a distfqldhme le:tz . 1(dsm4l ,c18ance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance :y kr;/qg:xzs8uo5n l1bmx d2 of 1.50 m from a 50s grq52xm/l:x ybu :d1ozn8; k.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the) nyuvf0m.uh , magnitude of the electric field at the loy n)0umhvfu .,cation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the di zpv4f,;1wpp+/ts rqrrection of the electric fi/q, r4w p 1p+psvfrz;teld?

  A 5.0-C charge is 10 m frompqct4x1p *0e p a small test charge. What is the magnitude of the force experienced by a 1.0 nC chpctxp*pe0 q 41arge placed at the location of the test charge?

  Two point charges each hava. )y ifu5:(bqlg(0xit- sfk ce a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point miia t xlbf 05scqk(-:f)ug.(yidway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick aa;q1sts ar -b85u)lwand a -4.0 mC charge is placed at the 50 cm mark. What is the electric field ata15wu)a8l asr s tb;-q the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC ca k/8lv70qxwh : m38k:wh w.(jq;vyor(xjbx vharge is placed at the 50 cm mqv8mvabx/; y: x(v8hh jr3w0(7xkkw . qjolw: ark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC andu 7d p5+29hju2hyuh fv -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of th2 vy5ju2h7+upf d 9huhe electric field at the point midway between them?

  Three 3.0 mC charges areco3lqwg(jy5(-s 7z jymp( uq9 fuj,,q at the three corners of a square of side 0.50 m. The last corner p j,j,wy f5u7oq(lyq-q z3 (sjumg9(cis occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square wh,grcpey k+bo(s-0yf j2n hs 0)ich is 1.0 m on a side. Charges are placed at the corners of the square as followp oyy)e,0r+2 0gbnhjsfs c (k-s: +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 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 elec ky/ 3jz/9qwgntric field. What is the magnitude of this eley3 /qw9/knzgjctric field?

  A particle with a charge of 4.0 mC has a mass; /+aogo9wp wed0b (yl 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 plr z0:oasa 39ob5d;h*+olezpk. : j7 hnvut z1saced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to. : z:1oj3suvapbsl9*;k 7zh+zodt0 nre h5ao be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00+ ( ;8 aa;/yfgsnknofy nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude an; (y ksyog/a+faf n;8nd direction of the electric field?

  A metal sphere of radius 10 cm carrieuq gs084t2gf(e 5nzom;u+e e es a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's oee 5uetm 84zn0 sef u2qgg+(;surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is thy3jspg+46v i ud,xe7o e electric field 6.0 cm from p3i, y4go+j 6edv7xsu the center of the sphere?