State the law of conservation omgio e0.zumn72 ls*1xf electric charge.

  Is it possible for two negative charges to abot :x.da2 2r ckh+mdr2eti+ 7w:qhv1ttract each other?

  Is it possible for a positive and a negm-,m.gbdnae5k rx 20gative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the r. qz +bkzbrw0 1rqr2/glass rod acquires a positive charge aw z.zq 2rkr b/r0rb1q+nd the silk

  A proton carries a

  The model of the atom sd18e 1 wlj+dplhows a

  A neutral atom alway7 tpujc r6e)p)yckw35s has

  An atom has more electro)ik;hj :e) yiwns than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are r pq,/,yu *ihvbeferred to as h i/,qvy*ubp,

  Materials in which the electrons ar 9 a3ubt9 ;.szpws3oeae bound very loosely to the nuclei and can move about 33ps au9 9os;zewtab. freely within the material are referred to as

  A negatively charged rod is brought near ony xj*if2 3ybx2ysld;w5i;:lw0ejs f2 e end of an uncharged metal bar. The end of the metal bar farthdw5yjysf2l:le2y230 wsx;ixfj *bi;est from the charged rod will be charged

  Sphere A carries a net positive char7v.nrz2iep:bag:j c6q 9 l, bzsmm4 3gc+c0qy ge, and sphere 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 statement is cor+nmgmib2:q,rlg cc vjz 9q6ep7as:3 b0y4zc.rect?

  How can a negatively charged rys(yuvh +fkk/ 3ok9l 46d3 cvhod charge an electroscope positively?

  An originally neutral electrosc3jcg 4dq( 4jm uaai24pope is briefly touched with a positively charged glass rod. 24ajjqmd 434(ui apcg The electroscope

  An originally neutral electroscope is grounded briefly while a posit8):3 4 mc un9ucwgafslively charged glass rod is held near it. After the glass rod is removed, the elf)c8 asgc39 ulwu4:nm ectroscope

  A positive object touches a ns(x 7-ps- vgj y.yjah/eutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to tyysahgv - 7/(pj. -jxshe leaves?

  A large negatively charged object is placed on an insulated tu1p-wc-a 3rv0ap, -tx joj0 omable. 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 ft30xjr1vp u -o0wo --aj,mcapirst 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 Coulomb6 jyrb832-;sl1a ok5g wonuwc constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a di*2f 9piah3uoa/ctn g -stance d. The first charge is larger in magnitude than the second charge9* nitug3ca-2 op/ fah.

  Sphere A carries a net charge and st;9ko4kjq sz 6pzn9.vphere B is neutral. They are placed near each other.zotvq;kp4 6kszj9 9 n on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attra,jq8rgr7ima.ect/ i -ct each other with a certain force. If the charges on both objects are do g-7,cirmt.aqr i8/ej ubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutualwqpm(-mce(e7 g4gx e1 attractive forces of F on ea(weex eg -m74p1gq( mcch other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a for+e5kdun4 ttc n03le9x ce F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their cente49knetutx 3 +ed0l5ncrs is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated byufs v6 k/v63ce a distance of 1.0 m. What happens to the magnitude of the force on the proton if63evusk/f v c6 a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happe ilu+.u6 bm:qv oi,8myoee7/ rns to the magnitude of the force on the first electron if a second electron is placed nextum8iuvy. qie 6le7 oo,:+mbr/ to the proton?

  An electron and a proton aree*liv lvm494upga ./ v separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electro9 p4gel.vmvu4lia* /vn 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 pozl4nw7 3nn 7/,*upqal 3vse +ukj qo5eint 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 mag5qv*l7 +wkejn sea3zu/qnu n o47p3,l nitude 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 c90zwoia ,t:s3c2 dn*qpmj 6tuentroid 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 magnitude of the force that acts on the center charge due to a third charge of +Q placeut*,o z0aqcn m 3w jp:6i92tdsd at one of the other vertices?

  Which of the followin1i0 3 moa gvac*zle(m x8lm4e(jbc4ovnu* 7l2g is not a vector?

  At twice the distance from a poia15 js0h1 )bkp: ub ()xtsmmrznt charge, the strength of the electric field

  Is it possible to have a zero electrich s3g:nm; lzq -7t*)ymblsdt 4 field value between a negative and positive cd)ns :mt-h q3z;y 7slg*4mbl tharge along the line joining the two charges?

  Is it possible to hav +de6pdd) d28f pbv6gue a zero electric field value between two positive charges along t+d2dd8d6pbp ) vf6gue he line joining the two charges?

  Electric field lines 8tdg1ia/ick 23v; brxnear psitive point charges

  The electric field s vc3. psk -iy(+zsd/zbhown

  Can electric field lines intersect in free spaf:db (w c u+hsacn5w4p:eb7w 1ce?

  A solid block of metuj4 il, ut5p2fp w15mqal in electrostatic equilibrium is placed in a uniform electric field. Give a statement,i5 lmp5 1tpj fuu4qw2 concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters ar 4nx v yzj::qn12ati,we each given the same charge, the electric field (E) midway between the cent iq,nw2nyjx: tv:a1z4 er and the surface is

  A cubic block of aluminum rests on a wooden table in a region where ah(k(a 5- -1fotaqe aapuvwqrh 2/7pi, uniform electric fieldq,a rat(f -he-(q5p/ vi1pokaau 2 hw7 is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrosta08f8+xj 7etfjclavizzkt 6.,tic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is py4i;bw(qw -r grounded. As compared to the case without the hollow sphere, the eli 4b(ywq w-p;rectric field at a point directly above the hollow sphere has

State three properties of c:4g )vetxhjx 6onductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is f e9re ppu5nz6s c-0r8qwol26$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a nex-n lr h(2biq fgw +v-6hwjs (h;u7y(wt charge of +2.00 mC. How many more protons than electrons does this piec l-qbr 7fw-+w ;(hs6hj(u2xg(ivwhn ye of plastic have?

  What is the charge on ,jt 9xm:mru+rxx6p1 u1 kg of protons?

  An atomic nucleus has a chcqlooo5zw: /j i6v( n,arge 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 cvil t**r *pat.u: pgk4harge values of 2.0 and -4.0 mC, respectively. What is the magnitude of tl4*rua.ktg * tpp: v*ihe electric force between them?

  A 1.0-C charge is 15 m m q4vmk laf jf/wa.3dz5g3/9wd mz:9rfrom a second charge, and the force between them is 1.0 N. Wmz 3dmza9q w5m/4.fj:wldrf/9va 3 k ghat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart ar9ehq2ocu h (g0e they?

  The force between a det x/dre)k -q: eeb5/$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm at -(-x bc v.fjber0ts:z: :finpart, experience a 1.0-N force. If they are moved to a new separex.nf0jc:sit--rf t: :bzv (bation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on ly,1 610i dqwy q,dqiithe x-axis. The first charg1yydqi1ldqq iw i0,6 ,e 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 charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0*b*gfiwl(ax5 8j9 eoo 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 (g8ia*ej*fow 5xl9o bof the electrostatic force which acts on the charge at the origin?

  Three point charges are loca7q-trhp8p:mpgx-l 3 eted at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 :mhl p p-7 tx-83geqrp= -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 a second point1bb+:xmo mel 1 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 chax:+bom1emlb1 rge 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 = 5.0 nC is apdbn: 8t ;n ;fixd) 2lg p.on:da8kh,at (0, 0). What is the magnitude of the net force g an,.i8nfbhp:k)n;lx:82 tod d;adpon the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0)htpa0 .*gcxy/ ; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction cg/a0*.ytxhp of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are plh*i -b nz*pdb5aced at the vertices of an equilateral triangle whic-p5db*nh*z bi h measures 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 separatek r5/tk;n xsf-ea u:0id by 3.0 m. At what point, on a line between the two chargeke 0f-x sai5;r/:tnku s, 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 the or51x x(;ab4cst9n bcuz igin and a +9.0-C charge is at x = 4.0 m. Where on taxtcb41zn9cs5bx u( ;he x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q g6 .b7 mib3wqu2ufu df0ka0w08l-tui is placed at x = 2a. Where can au8ul.g uwqb udmi27f-3kfb 60a i00tw third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. tz-5 z wum12jljo,f 0u 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 grav rivi7 y. +7*l4bvr/nqtf0z p tz3z4yiity by the attraction of a fixed proton /bf7rv3zz4tipytn.7 rvz*+i4l yq 0i some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point brv /a nhn-q)+dy nonconducting threads which are 30 cm long. Both are given identical charges, and the electrhrqnad v-n)+ /ostatic 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. cpt -wbzbap5(u:.rm, What is the magnitude of the electric field at a distancempp .z b5 rt:,a(wbuc- of 1.0 m from the nucleus?

  What are the magnitubgok1hb0l4qgpv v-fx(kx9j)0 4l ok 9de and direction of the electric field at a distance of 1.50 m 1xv l)g qjgklhfo -4 0bkv(9o kpxb049from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of /je xomy,otshhj72w,jf3;iegh0e2yr+ 2lb 4 the electri,bj7+y xo ey3osej j iwlr,gf2hm 4the20 /;h2c field at the location of the test charge?

  A 5.0-C charge is 10 mqwb 7 izuzp0nbc z:,s+w:tm 1:4/c nvv from a small test charge. What is the direction of the electric fiel1b:in:zqcw7zntm bu s,vp/c z40 w v:+d?

  A 5.0-C charge is 10 m from a small test char*oexd7w::z( md *rsezge. What is the magnitude of the force experienced by a 1.0 nC chazed dr*o:m7(*w:ex z srge placed at the location of the test charge?

  Two point charges each have af c kjxirx/;+ +,r(vmp .rcric7d6 6ak value of 3.0 C and are separated by a distance of 4.0 m. What is the electriv +.r,afc 6k rci6rixdkp/7 +rjm;(cxc field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm marp 6z8hu*(ysk3:55gzhbm9 fv0cu t ekrk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the ht5kueuzg8p0h :bcy*395fsm 6 zk(r velectric field at the 30 cm mark?

  A 5.0-mC charge is placed at 3l 3 jbw :l5mvgo0mmn8the 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 is the elecl mmv 5jmn8g:wbl303o tric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x q8zzd1 rwaodw8/r 43cltw +9j= 0.20 m. What is the magnitude of the electric field at the point midway be4zal8+r 8dzwd3qw 1r9w/tco jtween them?

  Three 3.0 mC charges are at the three corn a+/nnk(tit4oaj p/ ,lers of a square of side 0.50 m. The last corn/t( o n4/ajk+,i lnpater is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which o,i/tri4vawt j6/ o,w is 1.0 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); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is the magnitude of the electric fieldw4 r twj/,tv oo6,ii/a at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed ihf;-*e.jmqs k n a uniform electric field. What is tksemj f. -q*h;he magnitude of this electric field?

  A particle with a charge dchrjg9;;iu4;bu;(:k bqjd x 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 0.120 g is placed in an electric field of (v 8flf*0ic5 maht ro/ma81lr6000 N/C pointing ( mafil mtrf0lcr/h8av5 * 8o1downward. What charge 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. Thx7 q+z g9a7sdje ball is placed inside a uniform electric field, andg+dq77jz sx9a is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carrieum( -ceqsuvka8kri 26 0s -ol(+xmh0js a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the spher eom(8lcv00x 2au+u6rssm kjk-(q-ihe's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What tci fcwrv: /c64l 19e6 xtvq;sis the electric field 6.0 cm from the center of the sp 61ct 9;tlcvw 64refs/cqiv: xhere?