State the law of conservation of electric chargdif3 + qa-dc,ie.

  Is it possible for two negative chswc6()m,q 2xvdm;mqgarges to attract each other?

  Is it possible for a positive dive 8vv*v-mbw b./w-and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass roc5erq;ujovye* j , 45b6am0 qwd acquires a positive cha *4a; w6j qbcouj5e m,vr5yq0erge and the silk

  A proton carries a

  The model of the atom 3eo)ilotl 4w+sxk npa6r (.;i shows a

  A neutral atom alway (vr84ujp9wbqp*qw h)s has

  An atom has more electronl ou ,m1+s6zf0 ;axryms than protons. The atom is

  Materials in which the v*r ysd4af 3 l /9k5k+abyz 3txjxl/g6electrons are bound very tightly to the nuclei are referr/3vxx lsa jrlk9g * zyb3ka65 4y+/tdfed to as

  Materials in which the electrons are bound verbu;f7v.2s dlcs bxr cz47db*2y loosely to the nuclei and can move about freely within the marv42xzb;b*. cfdsl 7uc72d sb terial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. in;dkwtg 51euez;wsb-8hhn*w2 h /h * The end of tg 2bzhwid* he/ws ;58n*wt-hh ;u enk1he metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sybu5w)f - gbh8sbh 97jphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which shbbb7j5h98fg- syuw )tatement is correct?

  How can a negatively charged rod charge an electroscope positivew lqzl91xoc3 :ly?

  An originally neutral electroscope is briefly touched with a positivelyq3twvb(1rwz hs(bs0kq3 t27u charged glass rod. The elect3 hub71trvqwbk0wt (qss23(zroscope

  An originally neutral electr5unn*-xhp mf. w2 fr6d;e rb5 d2zt9sxoscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is refz w9bftmpd5-n r; 2 xu25reshxnd 6.*moved, the electroscope

  A positive object touches a neutunmzc+ fah0h1,ltcon v ,6g3;.d+bhn ral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but dd a+hb+ cl;ouz.n3hn16c,fh0gtm, v noes not touch it. What happens to the leaves?

  A large negatively charge (mxd- i6r6a 0 ovmcf3cdt0bh+d object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A seconvmt+ 6comif- 0rbh306c(ddxa d 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 Coul 5odi7tcvlv43omb constant $k$, which appears in Coulomb's law?

  Two charged objects are separajkb sl6ls 4wr8kpi/3,ted by a distance d. The first charge is larger in magnitude than the s4lbsp6 3r8 i, k/lwkjsecond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near eac ejtxriy* -g9-h other on an insulated table. Which statement best describesyrtije- 9* -gx the electrostatic force between them?

  Two charged objects attract each other with a certain fo muh1 3gzr71nxrce. If the charges on both objects are doubled with no change in separation, the force between themgxn1rm u37z h1

  Two charges are separated by a distance d and . 7e 4g ;:qosvkfz5qldexert mutual attractive forces of F on eac;egsqz.: q47 vok 5lfdh other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with9hg7oi m0r lj/gr/ .lq a force F. What happens to the force between them if one charge is doubled, the oth7ir/g/h9rmqjlg.l o0 er 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 happsl8 v4cna.6g*t6a k/vml kc e3ens to the magnitude of the force on the proton if avl6/km s8vta.l46 3kng acec* second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What h 0u8vssx mp;nk2 7bs)ae-)yc9x,q suuappens to the magnitude of the force on the) n s0cu)ux;b e2mp87s,ykxq-a9 vssu first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a d.gp5sq 5b.vleistance of 1.0 m. What happens to the size of the force on the prg .be.v5 5qpsloton 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 secondi)bm yd 6v u2jykbv:-: 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 combdvu:b-)j: 6yk y 2ivrners 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/ ca x 22kp8ciio9 e3rw2zunlf8it,,k of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.t ,k/ lc29f ie2uko8i w38azirp2xcn,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 followingn n, h70y8yh x 1buz1bsmp g58/ci1/xqtlt 5nm is not a vector?

  At twice the distance from a point charge, the strength of the electric hhr;4tf lfq7j q4xhw13 7zma 8field

  Is it possible to have4 :,zu omn;lsx a zero electric field value between a negative and positive charge along the line joining the two ,mxs:o;n lz4u charges?

  Is it possible to have a e225le ntq-esen*t, 8ndp d9ji.bt t(zero electric field value between two positive charges along the lin bi 2s-tj2(ql 9.e nt*t,8e tnedp5edne joining the two charges?

  Electric field lines near psitive point charg 7yk1rq4wi/wd6uo dm+es

  The electric field show v1f ,c:w+ylkfx 3r1vwn

  Can electric field lines interssq s2 kuvaal o n:9;mp6bi*axlb-7a6+ ect in free space?

  A solid block of metal in electrostatic equilibrizr2y, ;p xn/poguj/ w/um is placed in a uniform electric field. Give a statemn/ xwy u/op,pr2zg/;jent concerning the electric field in the block's interior.

  If a solid metal spherev mmgyf x 3*r8i7t* 4vtx9:his and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between thy ix*m9v3g h*i4vtxm 7rf8ts:e center and the surface is

  A cubic block of aluminum rests on a wooden table in a r5i4r59qjy4mwsw 2l 1 q(ncgniegion where a uniform electric fiel gjcwnmi l2i5r1q4(ns q5w9y4d is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrk2fo ()4jgiq 9eud8wzostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grou y 7*(luvww:ndnded. As compared to the*( :nvywd l7wu case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in staticmz7mkm o e: ra(9z;,xc equilibrium.

State Gauss's law.

  The charge carried by one :4ex i5il,nkrn 1x-ob 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 protonsq0e mac d6 a27v0/ztpo4hg j5v than elect7qz0 vdjohm evpa0c 62g/a54 trons does this piece of plastic have?

  What is the charge on 1 kg of protons?7a ldt( 1-mofi

  An atomic nucleus has a chajvc v7(xap 1i/rge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separa4f)f )ghfoefp :5anka/0wh 1yted by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of tpg /wnfkf4y)fh : a)1oe50fhahe electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them q+d;(ptgkhjzu+pg. wuh:;0 ois 1.0 N. What is the o. gtzqpp+k uu0d(h; +;g:h wjmagnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.i5hd :qr73il;ovkzffn g)xq8mnd(u6*d *qh(0 N. How far apart are they?

  The force between a o n j0zl;6.(9f*c rwdsico;jq$30 \; mC$ 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. If thejj q+ 9m5iyvb(y are moved to a new separation of 8.0 cm, what is the electric force y+jm5(qi jv9 bbetween them?

  Three identical point charges of 2.0 mC are placed on the x-axi)wklfx* jkd54d) ( asus. The first charge is at the origin, the second to the riw kl*ufa )dd4x()ksj5 ght 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 x-axis. rty5j 57xanpyo3e 7)f 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 magnitude and direction of the electrostatic force which apyny375 x f5tjr 7a)eocts on the charge at the origin?

  Three point charges are located at the following positionso;t3 (u9 7yp 4btzyvwi: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at ;49pz(7y to 3vy ibwutx = 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 plaod1,ah g e:xb989 reemb m)lt4ced 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:are,hx1b99d4eo t ) mlm8ebg 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, 0.10 m); Q3 flduf. 3pbqt40l2cn3 = 5.0 nC is at (0, 0). What is the magnituql334 bp2tlnu0ff.dc de 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 b3 +scouel 0w8(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on thbwslu03oe c8 +e 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertij305e uc uqtrq4uj(a r-sd. o+ces of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which (ut+ jsr50j e our3.-duq4caq acts on any one of the charges?

  Consider point charges of +Q and +4Q, wh4v-w 7xl,u hnnich are separated by 3.0 m. At what point, on a line between the two charges, would it b7uwnl hv-,n 4xe 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 the origin and a +9.0-C char i.v1ntoal3r 3ge is at x = 4.0 m. Where on the x-axisv.ina1tr3 o3l can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is pl q;k9k07w;qr-xzrkiqn2wk/ ) brm 5c2dmhi3o aced at x = 2a. Where can a third positive charge +q be placed so that t mbc m h0x;i;qqr/w3z 7)d25kkiqrk-k 9nwo2rhe force on it is zero?

  A copper penny has a mass of 3.0 g. A total of x+zn,g-f-bql $4.0 \times 10^{12} \; electrons$ 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 zgg-a468tr jk0r izhbb :.h4ng2o(j pof gravity by the attraction of a fixed proton some distance above it. zp -b.kor: bz8r( hij0jan2h64 gg4gt How far above the electron is the proton?

  Two 0.20-g metal sphtr o8akw f85ou,)a/ps 3q6 mkaeres are hung from a common point by nonconducting threads which are 30 cm pom,s8w5 )3k6auratkoq a/ 8f long. 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 electric 0)r )hgza(qs5zz l)nrfield at a distance of 1.0 m from t0ln 5rq zzshgr)) za()he nucleus?

  What are the magnitude and direction of the electric field at - phntw2z vnm*7 4oy3ma distance of 1.50 m from a 50.0-4 m *tpnw myzon2-3vh7nC charge?

  A 5.0-C charge is 10 m from a small test charge. Whatttht0 7 r qr10krx/+;z*i dmxv is the magnitude of the electric field at the locarx*dv m1t;hxr7 0t/0kzq rit+tion of the test charge?

  A 5.0-C charge is 10 m from a ski98 wkw9hq6)y4pl s)dn,vwbmall test charge. What is the direction of the elwsi9qk9wyknpl, 6d4w8)) v bhectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of th g3;w2ivib/9fa)y4wz a gwuv +e force experienced by a 1.0 nC charge placed at t gu;)vvw/ 9zg2iay4wb 3fw ia+he location of the test charge?

  Two point charges each have a value of 3.ho16b2g d qzi )4b-1vidng: yq2ew-ts0 C and are separated by a distance of 4.0 m. What is the electric fiie- nqg2zd vbqyb:2otdi14h1g w 6- )seld at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark ofkl.xaft:x1c-;e7g 7t +oiqqh a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 c q efg1-kh7:c o7;q tixl+axt.m mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chaip, l3ohqa/ *iok9fy.aavg- .rge is placed at the 50 cm mark. At what point on a line joining the two charges is the electoi-gq ak9yva .ip,.lohfa3*/ric field zero?

  Two point charges of +3.0 mC and -7wulw526ci aps- d sl/(.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betwcl-uw a/62l5w( s psideen them?

  Three 3.0 mC charges are at the three corney1 nq:jildu:(wo;v v py6g,o5rs of a square of side 0.50 m. The last corner is occupied by a -3.0 mC ::j;l1uvy o np vy6g5w,(i qdocharge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Chargv jd/xag lk6tb.l 6,6b i6cct7es 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 magnitude of the electric,l7/. d la jc66tbc66kvxgbit field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC whennxk4/8v hhy7 e:xfirrj rr864 it is placed in a uniform electric field. What is the magnitudeen/ y4 rr6kijv7xhr :hrx8 84f of this electric field?

  A particle with a charge of 4.0 mC ha:j6+ ljkvkm1l*c-3ahm uoawp84g z2es 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 ell1* 6un6 mdizeectric field of 6000 N/C pointing downward. What charge must be placed on elm1zd *6in 6uthe ball for it to be suspended?

  A foam ball of mass 0.15*rg ) i i5vw4 gcmlcw0.xm4xa50 g carries a charge of -2.00 nC. The ball is placed inside a uni.vgcxa)r04i x5w cl4w*mi5mg form electric field, and is suspended 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 :(iv nhx;yf)tznvs5(5 c no4hu2g /zv jc- w1imC. What is the magnitude of the electric field 5.0 cm from the sphere's surfachuxz;i o(/vg5h(vc fn n2 15tc:-sinzw j) 4vye?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC 5peywjjz3y v z84;c/snt/l:i. What is the electric field 6.0 cm from the center of the sphereitnvyw /jl5csjp:8/;zy34 ze?