State the law of conk 3xnha3h th+5(f sd4hservation of electric charge.

  Is it possible for two negative char48 t4wlxns ac0tlk/xoz: (8 grges to attract each other?

  Is it possible for a positivl/3lmo g nm1 /p0.xdege and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process theauz4.nss*ab) 0aop u7 glass rod acquires a b4a0n o7up s.)u*azsapositive charge and the silk

  A proton carries a

  The model of the atom sh ft:w(1 zzioz*ows a

  A neutral atom always hashog (k, 0;roe2hxbk3hey +,qa

  An atom has more electrons than prgpe.sy-/;y *x 1 vdj)geniw4 dotons. The atom is

  Materials in which the electrons are bound very tightly to the nuclez 7y.22xzzwux :b4 xxdy6qp)zi are referred.7x2z y 2xx4dzbw6:)q pxyzuz to as

  Materials in which the electrons hnm+ xpdtm4qz3-,) eb are bound very loosely to the nuclei and can move d4p em3xq+bt)m zh,-n about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metad9w9ty-ft b karh mxe* 36vo2u/)dr4f l bar. The end of the metal bar farthest from the charged rod will be ct43/ kr2oa)ff9rmhbv-e*6y w9d d txu harged

  Sphere A carries a net positive charge, and sphere B is neutral. They are place/5 s62ernyvpn d near each other on an insulated table. Sphere B is briefly n 5r2 e/snypv6touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod cxbr1k2siznm : 9x , c4ugf(d v8k0v4rgharge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively ch+rptgr+4+vgxti p )9 oarged glass rod. Thegpir4t p+) rvtxo+g+9 electroscope

  An originally neutral electroscope is grounded brh/ s-fc.wumg4ud +ja *iefly while a positively charged -g/j *ad hwscm4u.fu+ glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches ah j ( jg61c*f4p6;3lyssexm qg neutral electroscope, and the leaves separate. Then a negative object is brought near the elecq ls1p;f6cx 634* jg(ehjsgymtroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated taf703j;m in e(9aa ieogble. A neutral metallic ball rolls straight toward the object, 3 igj;ei(a of09e7mnabut 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 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 Coulomb const4 ykvej-ev keec4,o 32qj r0(cant $k$, which appears in Coulomb's law?

  Two charged objects arer+;yhn1 lh+ez separated by a distance d. The first charge is larger in magnitude thzhel ;y +1nhr+an the second charge.

  Sphere A carries a net charge and sphere B is neutral. T 4,;zh dne+ris:, :haja8yoyphey are placed near each other on an insulated table. Which statement best describes the electrostatic force ber:+ae h:iszpo a,nyjyh4,8 ;dtween them?

  Two charged objects attract each other with a certain force. If wp2g6 ilui,f9cq3 1dqthe charges on both oq 2ifpgi13uqw ,d6lc 9bjects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcv ;:yg y5;mtjq i1sif/es of F on each other. If the charges are separateijm yf s;/v 1t:gq5iy;d by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens ta(v(,vb/5o:s )uv9uhng pu tno 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 value? The force is now equaluavvpb nhg,/ : 5(uv (u)n9sot to

  An electron and a proton are separated by a distance of 1.u6qsa*acq -z s:sb8fcg2wz7 rc -,-hj0 m. What happens to the magnitude of the force on the proton if a second electron is plhcgz,-2s aj* rs6:cqwaqbs8u7- f c-zaced next to the first electron?

  An electron and a proton are separated b5usikd,,7,dqi 4 edvay a distance of 1.0 m. What happens to the ma,eq , i5dadi,suvk47dgnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are sejde 7.z;rzjuvwc ( s7f jw2*3 k4dlkx+jz;bz)parated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to tbxsez).(c4 k 7jj3+fwdzkdl2*vj z7z jwur ;;he proton?

  A point charge of +Q is placed at the center of a square. When a seconskf(dv4dygt.kk tsf)0a4s 6 2d 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. Nowa.4sygfskv ds6dt 24 k)tk0f(, 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 equilatf(n in xf8 m+8eswog;e6y5+j w0zi6mkeral 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 i+6mwn 0z8jxfsoiw5e+ yf(;k 6 meing 8t. 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 followinecx)- . n y1,hzjyw9irg is not a vector?

  At twice the distance from a point charge, the strength.ii (xa,f- ,ih/aunbg of the electric field

  Is it possible to hahmt9 x vjaf8tj1295 tove a zero electric field value between a negative and positive charge along the line joining the two chhjvfmo tx82tt9a5j 19 arges?

  Is it possible to have a zero electric field value between two -ii(pe q a4 tx /9xb t3 1.tdhrvg*zzv(k,9axjpositive charges alon- (1btxgt i34p9ie,* v dj.9kahxrv(q zt/zx ag the line joining the two charges?

  Electric field lines near psitive point chtw3udaj)dhdy t8) :0b arges

  The electric field shown h;(qhu) .wi5bbbbpo 7

  Can electric field l.juj+i lmi4h8 tm1.h4dv 2vbvu .:vsgines intersect in free space?

  A solid block of metal in electrostatic eqv31h i;zec;sd.i dye;3o qay ;uilibrium is placed in a uniform electric field. Give a statement concerning the electric field y es;;zia.h31 vdd3qoeiy;;cin the block's interior.

  If a solid metal sphere and3wc0w9h t2n e-) hvwju a hollow metal sphere of equal diameters are each given the same ch92t- )je0wcuhwvh3 nwarge, 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 p4l88;-tp2ith9o,g nsyrj uy9j4s qu elecnoj s8h yuup 498,2gtqi9r4sypl -j;ttric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electri. ow2r55-zhnr5xi ztuc charge

  A positive point charge is enclosed in a hollow metapk 6+fni )d5g8+mw sdut7: uz2y na7qjllic sphere that is grounded. As compared to the caj8uw f5a)t62pd gn z:i+d+mn77 uqyks se without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of cone -y5blxmmnbom sp;k3 ;,i1g;ductors in static equilibrium.

State Gauss's law.

  The charge carried by oqoq ,9. wyduo,ne 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 ofl;/* n*kbr qrch vlm91 4jxlq3 +2.00 mC. How many more protons than electrons does thj;3hlq vc l4br m */l1*nqxrk9is piece of plastic have?

  What is the charge onjr9n 1t f( mdy07pymt1 1 kg of protons?

  An atomic nucleus has mwcieb42 fue98 f t(x6:qaolzp 2*d,aa 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 2.0 and -4.0 mC,qchf2m8yoy 3 b/ay ;7b respe 2q;o7cym/ba 3bfyy8 hctively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, rmy9kzh u;4m: and the force between them is 1.0 N. What is the magnitude of theyuk:4;z mhr9m second charge?

  Two 1.0-C charges have a force between them of (t0sio7 vomlhax 8x351.0 N. How far apart are they?

  The force between a b/c8g)dl e)x o$30 \; mC$ 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 9qqef/ a)imz5 force. If they are moved to a new separation of 8.0 cm, what is the electric force betweef9m i/5q zae)qn them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chr dut9kzk.c )le.-sc/ argcc..ukr-t9s / )delk ze 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 mChz rliy;:+c0v is placed at the origin, -2.0 mhyl+c z :0v;ir 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 following positions: Q1 = 2.00 mCh5,esbzzjh 4 * at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnj5z*ezh, sh 4bitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed a;oq rms+utv :uh/e 9h*z5 bqa2t 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 at the center. What is the magnitude ofu:*eh5qor; z9ut+s m2v bq a/h 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 =sx yp;;oll0j w2fz-v/ 5.0 nC is at (0, 0). What llj;yf/z-p0v2 sxwo ; is 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); Q3 = 5 nr-gry2h:s 2s.0 nC is at (0, 0). Wyn r2-2 gsrh:shat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equila9rhp;e g.re h(em,u-oteral triangle whiee heo pu -(;g,rr.9mhch 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 separated by 3.0 7wgest 7-keh2u4 pi3wm. At what point, on a line between the ww s- iep3 ethgu47k27two 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 the origin and a +9.0-C charge is at x = 4sok o6. 1se;im.0 m. Where on tesms;.1o6 oi khe 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 is placed at x = 2a. Whekc8,ckv3 ,hzrre can a third positive charge +q be placed so thak8krhc, , c3vzt the force on it is zero?

  A copper penny has a mass owk .vec g -dn8aiwv ,m+x+ eoydl97):gf 3.0 g. 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 agarzqt3.s mx848 3 pjlplinst the force of gravity by the attraction of a fixed proton some distt p4 mp8qjr8xs.3 3llzance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonco0wvg p xt2ox2x 0r 1i1(ya1sefnducting threads which are 30 cm long. Both are give2tf eg 11xiwvxy 0sopra( 12x0n 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 ippac k7f7k 42hwovt76b m0m+os the magnitude of the electric field at a distance of 1.0 m from mhcwbktk+pf7v 7074 2o pm oa6the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1m+uc6 (qhtaqmf n d)y* jmu065.50 m from a 50.0-nC fymqcan0m *)6qmh6+ tu5 dj(ucharge?

  A 5.0-C charge is 10 m fro m;7m+sa-bc z0l+/bm ych qv3xuz 9,xim a small test charge. What is the magnitude of the elxbv m0m7+ 3zc shc+i;,uy 9q /zxml-abectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the 5bi 6qq -4dq/cd(ykvq electr/iqq6q4vkd (- d5qbc yic field?

  A 5.0-C charge is 10 m from,/s tmem-f*njhyx+h (sy 8n5t a small test charge. What is the magnitude of the force e/- ytmty hn85ms (e,+ fhjxns*xperienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a ei0fadj98t1o tc6j 6to37v ;hpt fu(f value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field a8 dtu vt a7e;i1oo3p 6cj6h9(f0ttfj ft a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a c qd*g ak4 dv+ d-l*na+x+k9e(.zz fq,1usglnmeter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30+xlgev (ka *d4* aqcn l- kq,.s+u1ndd z9g+zf cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter ;vo x)6 m3rximstick and a -4.0 mC charge is placxmm) voxr6;i3 ed 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 jsy :aup1(w,ydk:2 1 hwgyx:c -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the: x yw::12uyd ah,1(kjcgwyp s electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The ex czc8m-n4t2last corner is occupied by a -3.0 mC charge. Find the electric field at the-m8ct 4cz2xen center of the square.

  Consider a square which is 1.0 m on a side. C m20ul8nxk iu0harges are placed at the corners of the square as followsn k00iu28mlx u: +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 ele0k 3m9u bx3wr)+4v qpam f*cchctric field. What is the +k3bf u*34ahv pqxw 0cm)c 9mrmagnitude of this electric field?

  A particle with a ch0+6 tekmpq7 d.kq /og//g 2gtr9o lhbvarge 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 2 yx,7flo)p (3bcfnjg6000 N/C pointing down,2pjgfl 7b(fcno3x y)ward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0o8l 7 t.mznijj8ti*8 w.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force ofl m8o*. wzn7t8j jit8i gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries ax+ct +2dre:rl charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surface?c:2 +d+ rtrlex

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. j mjv17vvjvd c51+.kc What is the electric field 6.0 cm from th 11vm.j vvcjk c5dj7+ve center of the sphere?