State the law of conservation of enl8wy 1) ,mjfzdy l(v9lectric charge.

  Is it possible for two negative charr; af(ny)nj1 o g./vi mk8vhx*ges to attract each other?

  Is it possible for a positivert ao2 mr*4-n)cee /rk and a negative charge to attract each other?

  A glass rod is rubbedufbs*-;r hju; with a piece of silk. During the process the glass rod acquires a poh j*fr u;-u;sbsitive charge and the silk

  A proton carries a

  The model of the atom shows 9 x y5z0f.eeurxy+mj ox/;f+na

  A neutral atom always has 5mtxbr)n 0 5gl.uwc5hl4o6id

  An atom has more electrons than protons. Thii (1 ojz o6a;dnlo5ddtj;e,-e atom is

  Materials in which the electrons are bound very tightly to the nuclei are referr tq i ,/ndralp 1ac.;bhhy s70r+k*ez8intc68ed t n r /i8 6nrtca8zi.1h pthbc7y;q0k e+,s*dalo as

  Materials in which the electrons are bound very loosely to the g p:b49 s,0w)zleiyig nuclei and can move about frigs ,0:w lge pi)9zy4beely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged mr+1kn c/9m znaetal bar. The end of the metal bar fartn/ n+acr91 kzmhest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is igax)aaj3b8weug :/b- pw .en6c c,/e neutral. They are placed near each other on an insulc8-n,g:w/b x6ae3jp . g i)cwaeeabu/ ated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod cb,)6f*lyob b mrfo13 wi)*vxkharge an electroscope positively?

  An originally neutral electroscope is briefly touched with xy.7 4cpdg 29xkfam8d a positively charged glas x2cg8 7kfm a.9xd4pdys rod. The electroscope

  An originally neutral e 9fs )nvr f*1p422rulzjc+ciilectroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is remo22n z 1us r)rl cvijpf+if4*c9ved, the electroscope

  A positive object touches a neutral electroscope, and the ekx*xec rr4/3leaves separate. Then a negative object is b rc4/*exxe3krrought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A3n abmomdn-u(i s.+ iiwdeyu(q e)086 neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the 6qo.e) wbnai duin(8msm +3e-(iy0udpath 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 e vgvi/x/o- 7-uy w7prvsg3.j the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firstmonpb- o su-yr83z,2e93ypm y charge is larger in magnitud u sy38zonmm2b-3,ryoep p9-ye than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They a4kpj* d:ehjgir870v*u xuy( ure placed near each other on an insulated table. Which statement kui04ed7g jujx*ru ( yhpv8*:best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargei eh )xjbrx)cb.2* 5tws on both objects are dout2*) bbec.j)x xrw5ih bled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces sq 3p zcu1k93gof F on each other. If t1 9zup g3scqk3he 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. Whj, to4s/n frmn--v.hmgr;c3ba )qvhvd l :-a, at happens to the force between them if one charge is db3 ardt r,nv h:m-/q4oha;jgcv lsnm.v,f)- -oubled, 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 cf 54gv:lv(b w85,eclf tez 2sdistance of 1.0 m. What happens to the magnitude of the force on the proton if a second electrol tw5lsc(2ge5fze ,b 48fvcv:n is placed next to the first electron?

  An electron and a pro5 pf ,tak* z(wsi6h 3kx+9oosc3f/geaton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the ,+skf ptaoi h( xf3ao wkz*eg659/c3s first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whatpy)nh9xfr - x/ happens to the size of the force on )/9pxf h rnyx-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 square. When a second pointz0(ce fd- rsjsp7a,/ c 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, idenfs7-zad(c,r0p / cjs etical 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 thetmg,*ge; gbp lo-h9 ba82 pa(e centroid of 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 mae; o8p9 lmp-aagh(tbg* e,2 bggnitude 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 veyz3; 0ynz1o /kjrw xz)ctor?

  At twice the distance from a point c*ih ,jn8*g -ojra+ iv pmxl:*kharge, the strength of the electric field

  Is it possible to have a krr ;/o1jpig5mh .s1.j9rv i vzero electric field value between a negative and positive charge alg95/1o rsp1 .mkjrv; iihrjv.ong the line joining the two charges?

  Is it possible to have a zero electric field vhb1iy :z;g4i zk8g zzw 54wjla/le *5malue between two positive charges alow8 /1;zzi:ay44 jbl5zh*iweml g gz5kng the line joining the two charges?

  Electric field lines nezvt)eg. p 8rd9ar psitive point charges

  The electric field shothb mr*z6j t+u(s +en(wn

  Can electric field line g0e +wn*);f*jsu(u ila h 15h4lpkrfhs intersect in free space?

  A solid block of metal i cgu(b4apnl1l6w2 -xin electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's ilpxw4l-c2u 16 n(b aignterior.

  If a solid metal sphere and a hollow metal sphere of equal diameters r-tz0a2j ;xtpare each given t20;j - xrttzpahe same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform el8*rph/j2 b9hhksy / vlectric field is directed straight upward. What can be said concerning the charge on the block's top surface?hs/9hpy r/bh8 2kvj*l

  If a conductor is in electrostatio) h,gpp2+dm rc equilibrium near an electric charge

  A positive point charge is enclosed in a+ltw+uffdwc y16 hu;; hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a u+w6c;f+fw d;t1ylhupoint directly above the hollow sphere has

State three properties of conductors in static equpwk3dwc f 9.i7ot,d,p (en bt:*ky /rvilibrium.

State Gauss's law.

  The charge carried by one ei h,+m5bbj30(d vbjwhblbq, ,lectron 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 rlt2:bq 6r)wu*.:9 qle )vvdt0pldxf a net charge of +2.00 mC. How many more protons than electrons does this piece of plastic l edu)lr)rvd t9t :bqq pl:*v6 02xfw.have?

  What is the charge o 8by1)x8phc,o (j kaeyn 1 kg of protons?

  An atomic nucleus has w5.tjdh0 w:p6 dqbe2na 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 values of wl:,h4 dqbr:u /g8xk3 h0jbz g2.0 and -4.0 mC, respectively. What is the magnitude of the ell/:q3 k j gd,rzg:hxb04h8 buwectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the ,cs8zne8gs ooj8b) /n6tabv 0force between them is 1.0 N. What is the magnitude of the second che6s)a ot8n jb88v0 /,scng zboarge?

  Two 1.0-C charges have a force betwc*5.:qn ykxgr een them of 1.0 N. How far apart are they?

  The force between a hsd/a6o ;2iie(g2h3)e inetn $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience;lc 4) ka3sx/yl b 4mi+eri1gu a 1.0-N force. If they are moved to a new separation of 8.0 cm, w eua+l4;g)/xb4sicy31km rilhat is the electric force between them?

  Three identical point charges odi/ gv8/(frmpf 2.0 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 tm gd(v/i r/8fphe 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 charge of +2.0 mC im,8kozwj8x./ x q u(vss placed at the origin, - 8js, ux(vw8.q/kmzox2.0 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 the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the xqq4y4i cq*q. following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = q .* 4qqy4xqci-1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at thp:p:h2iy5siv)mfs 8f1 t ,b cle 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 :8pb2:hvf tis 5,1 p cilfym)sis 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);0qi0r3 hi lm ne,fg+jvlw(5j am:2d ,n Q3 = 5.0 nC is at (0, 0). What is the magj(r mv:+5jla e3g 0wqn,,2 m0dnilfihnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m,vo- x52i)cmaz1snly1 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC cai c1)5l2s nzy omx1-vharge?

  Three identical charges of 3.0 mC are placed at the+m a0 b,iqggv2 vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force vgm,0a + iqg2bwhich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whatdbk93i .p /jtp point, on a line between the two charges, would it be possible to place a charge of -Q su bp.jkp /d93tich that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C char46vv+oi-:eo3fxnd4 oi 8 zwadge is at x = 4.0 m. Where on the x-axis can a third cha 4z:o83ev+o xia dnv6owd4if-rge 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 cak)k: p7t zrmz0*lrms (n a third positive charge +q be placed so that the zsp *m0r l()z7t: rkmkforce on it is zero?

  A copper penny has a mass of 3.0 g. A total of 6vi vt.y68kzy$4.0 \times 10^{12} \; electrons$ 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 aj4i1 la2(iki2yqlsp : gainst the force of gravity by the attraction of a fixed proton some distance above it. How far above thekp a( lslq2jiy2i:1i 4 electron is the proton?

  Two 0.20-g metal spheres arkymsg 45-tzx(e 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 until the angle between gkz5y st4(m -xthe 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 electric fk mvm3t0 -p6en lm uhrl7) qfq+n,1q+jield at a distance of 1.0 m from the nucleus f1n+6u)0jrle3+tpql vm knmh,-qq m7?

  What are the magnitude andjso b:okt92v( direction of the electric field at a distance of 1.50 m from a 50.0-nC chargok b92s(:vjto e?

  A 5.0-C charge is 10 m fe/fn cfr.rrbeu; ek11 f(n fae8/;tg;rom a small test charge. What is the magnitude of the electric;fft1/na ec8e1bnrfe;rg .f u e;rk/ ( field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direc ls ryn34neo):jc, 1omtion of the electric fieldeo 3cm),4:js1 nny rol?

  A 5.0-C charge is 10 m from a small t +;5esyp.w wtgest charge. What is the magnitude of the force ts w gp+w5.e;yexperienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated b(uw*.u8wpspbr oi47ay a distance of 4.0 ai4( sw*8 p.o7wpu urbm. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sticbcwgohf/v / td81or 31hc22o kk and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mark?2ktrh/hgw2bco fv38/cd 1oo1

  A 5.0-mC charge is placed at the 0 cm mark of slg ;yxrbm-5sj8 d*a6a 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 is ty lb5j-sgxr 6ms *8a;dhe electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = -,xeeo 46l twa0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betwa,6-o wtex l4eeen them?

  Three 3.0 mC charges are at th4 ,j.tgw8sns b6izr p9e three corners of a square of side 0.50 m. The last corner is occupie 6i4.8stp9,b jnwrszgd by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is c (b+ sck8zd6fdtr j,91.0 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.c sddbj6 8zrc(9t+fk,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 m /.+f)npo/xuoc yja; hC when it is placed in a uniform electric field. What is the magnhxp/y / )a;.j+ ofuncoitude of this electric field?

  A particle with a charge of 4.0 mC has a b )c7cq6pscaz l );d7smass 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 electric field of 6000 N/C c p8 xek(vr74zpointing downward. What charge must be placed on the ball for it to be suspendedk8e cpz7 vr4x(?

  A foam ball of mass 0 oq 5x6/r2t2bekfa g-oaheuol5p)3 k4.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direab2 ul4of 3 qr x6-5eho5kgk/pat 2)oection of the electric field?

  A metal sphere of radius 10 cm carries a cu gak xdw0ve7n6c; pa-yw ql0k6 5q2wq4jc 9k5harge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's su6jg 5yck6n 4a0p0qqwv d5w ;k2l9qxu wc-e7akrface?

  A metal sphere of radius 2.0 cm carries a charge of 3.kqh/ wzaiak r9ik7f373 yq 6b10 mC. What is the electric field 6.0 cm fr336qh9k7ka i ibq 7yf1kr/awzom the center of the sphere?