State the law of cons t9unsh-b 4fjf8m5yy36 v ;nqzervation of electric charge.

  Is it possible for two negative cha avqo2ft ox4 9b+js63drges to attract each other?

  Is it possible for a positive and a negative charge to at0ce3ppbz8+vy y lwf /.tract each other?

  A glass rod is rubbed with a piece of es lm0g; z*-obztt6h5 silk. During the process the glass rod aco65zlth g;0 ztms*be-quires a positive charge and the silk

  A proton carries a

  The model of the ato3oglt ,bbcczq 0 2:i.pm shows a

  A neutral atom always has6z)th/ bl w2jvj0i,td

  An atom has more electrons th+w4t/b-d tvxtan protons. The atom is

  Materials in which the electrons are bound very tightly to the g ci pvdk)ghj(+;n/ st0qg)z 1 q:2tr9em(cr cnuclei are referred to2pt9 rhv) e +i/jnm;dq(t c sqgg:cr)( czk0g1 as

  Materials in which the electrons are bounvx9op (p/sgq3d very loosely to the nuclei and can move ax(o p/sg3q pv9bout freely within the material are referred to as

  A negatively charged rod is brought near one end of an unchqlib11uq6 zrm*8i2 /4u maix iarged metal bar. The end of the metal bar farthest from the charged roiq*6r mi2 q 1azmb 4i/iux81lud will be charged

  Sphere A carries a netcd .cxs ;w/c1k positive charge, 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 scsw 1c ;d.c/xktatement is correct?

  How can a negatively charged rod-mrtc0 t 1o,sw charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positi pg g*xm uydny),8ku*/vely charged glass rod. The electroscope,*udgy/yp u* n8g)m kx

  An originally neutral electroscope is grounded briefly while a .iw6eyd -z lol))ppx8positively charged glass rod is held l))6zi wx8.oypl dp-enear it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, an e8)llf/ 6-;w.h qn *zktzxufxd the leaves separate. Then a negative object is brought near the electrewzhzf f8.- /lq;nx t *x)6kuloscope, but does not touch it. What happens to the leaves?

  A large negatively charged objecpa 6hn )b k.s.uel3*1br,v jximl:d1c t is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neucj1rba.1p.x)like hv: b3 nlu *md,6stral 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 coozqv z223 fzo8nstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge isrg.7ukspjf0l zzumv 8; m//-w larger in magnifujvgz7k./-m0; 8sluwpz r m/tude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. Thez2wva857ql xa81c du qy are placed near each other on an insulated table. Which statement best describes the electrostatic 1v5ladxquc2z 7a8qw 8 force between them?

  Two charged objects attract each other with a certain force. If the ch5rs3i-gamc p8arges on both objects are doubled with no change in separation, the force betwsc-pi38m5a rg een them

  Two charges are separated by a distance6-1vxs ksxq /nut.lxx )c:9 u:ytztb2 d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual x ):t9 1x2:xbt-cxulzvtn 6qy.s s uk/forces?

  Two charged objects att5/ +e ; -rp9ntnncnlh.g(ffv ;fq(y x3hml*my ract each other with a force F. What happens to 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 ve3x*n((v;hyt nlc q-phf lmfm+5 y9./ f rngn;alue? The force is now equal to

  An electron and a proton are pxnx;*jtk80 hseparated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the t;*xk8hjp x0n first electron?

  An electron and a proton are separated by a distance of 1.0 m. e7rw*yb2 4t4plv9fq 3 cg 0tmvWhat happens to the magnitude of the force on the first electron if a second electron ietcqbvy3 0vm* rwg27 lt9p4 f4s placed next to the proton?

  An electron and a proton are sf;klk +m.yl, nng-t qe* rt3.ieparated by a distance of 1.0 m. What happens to the size of the force on the proton..e3 kgfn,nt ;+l- yqt*m klir if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is xpw23bwpjrv3 io+3/m: hr0faplaced at the center of a square. When a second 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 corners of the square. What is the magnitude of the net electrostatic force acting on the positive charge at the center of the sqr3m wx p i+r/wb3o0fpv3ja:h2uare?

  A point charge of +Q is placed at the centroid of an equilateral triangle. Wdyouw*-3) b adhen 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 magnitudydo)d* 3ab -uwe 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 followingwy . 6m4gkig4fdm5 ,jf is not a vector?

  At twice the distance from a point cha,u hnh9dl)s4i0 lxz ;eh1l;hkrge, the strength of the electric field

  Is it possible to have a zero electric field value between a negativez7 t :dkqspf*t8 ;6orx 8iu)rp and positive charge along the line j6ur)id8 8 *xpt:q;zrtokps7foining the two charges?

  Is it possible to have a zero electric field value between tw 7qn1/ewu ftg5fffx: q;uf 1axnv:x,7o positive charges along the line joi 11t :fn/xe;: 7v fu ffgxqawn7q5uf,xning the two charges?

  Electric field lines near psitive point chargf n-8uuyo js c,0pj).ies

  The electric field shis 1wyr,fx ,vjb49k/ rown

  Can electric field lineq :-q xxw1uac(s intersect in free space?

  A solid block of metal in electrostati se:kj0p,9bx7iqsl2w c equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interi,:0wp 27besxlqiks9jor.

  If a solid metal sphere and a hollow metal sphere o/,y(k7 umoxewf equal diameters are each given the same charge, the electric field (E) midway between the center and, m/ex(kuy ow7 the surface is

  A cubic block of aluminu2p3dgl x.jj b1m rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's topjjb.2g xpdl 13 surface?

  If a conductor is in electrostatic equidx1 )-qb vhj8rlibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere t8 xj0cz;q8exmma 7sx 8hat is grounded. As compared to the c80xz;8 a qx7ms e8xjcmase without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors )k9 +omk;hin hin static equilibrium.

State Gauss's law.

  The charge carried by one electron is g8cw 6e8.b um.b rrc,j$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has percmaz42j,. h. uy*ta net charge of +2.00 mC. How many more protons than electrons does this piece of plastic harh,p2y*j.a4u. e zct mve?

  What is the charge on 1 kg of protonskt6 eg )qq-a4;pv(0ndca /s vt?

  An atomic nucleus has a charge of nxgpc 7 6ea(5 ysk,i8e$+40e$. 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.g z38sta w ;ciny0f:j -4.0 mC, respectively. What is the magnitude of the electric f i; g0 jc:.zats83yfnworce between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwehel2,briz0,wc cgk 9 t/.7cvjen them is 1.0 N. What is the mj c0kb/t,e,cw.vi z9h2cr 7glagnitude of the second charge?

  Two 1.0-C charges ha.hq osh4s k/:z; pk*xc; sgsr)ve a force between them of 1.0 N. How far apart are they?

  The force between a ;oi,)u bbyof w, 92fkmfgln;*$30 \; mC$ 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 7n nn+a5ji-evxczt.4 1.0-N force. If they are moved to a new separation of n5 .cjnei v-tx74n+az 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on a2f(g aadi:t3kdf2;, paasj ;the x-axis. The first charge is at the origin, the secaa 3k(a;s a,dtd a;ff 2gjp2:iond 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 mC is placi;n -zqppbr6 lqtq. 54ed 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 4b 6q .;pp-irz5ltnq qforce which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at thqd3k0 ro46u7 ugi1qt6 c q qbv+t48yx = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.0rkvqothucq706qq416u bd3i y4tg8 +t0-mC charge?

  A point charge of +Q is placed at the center of a s pkfn*6i+* ghsquare, 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 si *f*khp+gn6 if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0w*xc3-zz- icx*:m xun.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude omzz * *cn-cx:ux-3wxif the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.)q+)ri nbryl th ef (pyd8w0-60 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of )f bhnq6w0 e)8tly-iryr (+pdthe net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are pla3 a (ll8i/*evbcfr9q6 k o)bwzced at the vertices of an equilateral triangle which measures 30 cm on a side. What is*(l3/iq6 ew lo9ba8 )k zvfrbc the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sepv +wm6j5j:rvv)oi: gp arated by 3.0 m. At what point, 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 ze5i wr)g+vp vv:oj6:jmro?

  A +3.0-C charge is at the079y fg xrfv4xsk a+*n160gose p4xwt origin and a +9.0-C charge is at x = 4.0 m. Where on the x-ax6pfg +g74s1ox nex4 ya0s9vr*txfw0 kis 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 pld r1jy2wn sz r1.k;t)vaced at x = 2a. Where can a th nwr jdkt. 21rzvs);1yird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0b my. 8y,mlug;qfr 2n0 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 against the force of gravit id0qz t/l2b2sy by the attraction of a fixed proton 20 2ldbt/iz sqsome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres ar zet3 :h-(mbcogd+v4te hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the ele 4cg -teh(v3t :dz+bmoctrostatic 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 magni3yl18rzyeil 836 u)rgr//unmkya3 q/ lypw:itude of the electric field at a distance of 1.0 mmryiy/ran8// p )13 lyzgeqi3 l ruuk:w3yl86 from the nucleus?

  What are the magnitude and direction of the electric field at a di(noyc6am hx5-- rzve5stance of 1.50 m from a 50.0-nC my5x on -zac- r56v(hecharge?

  A 5.0-C charge is 10 m fro8yp8.swtp a ,gm a small test charge. What is the magnitude of the electric field at the location of thpw y .pa8gt,s8e test charge?

  A 5.0-C charge is 10 m fr.apr5 , svvdi:om a small test charge. What is the direction of the electricvpvr 5,ai s:.d field?

  A 5.0-C charge is 10 m from a small test charge. What is the + y6*sjceow6zm- ,h,g (l: i2ujxzh /qnod*oymagnitude of the force experienced by a 1.0 nC charge placed at the lx-6on+y*lyqgj(/s *6zj,z2u:edmw i c,h hoo ocation of the test charge?

  Two point charges each have a valx2(+tt -ahqiht,fa8pmnz,hj2 8/ x tr ue of 3.0 C and are separated by a distance of 4.0 h 2rnf 8h,zmpqi/xtth -j2xa+ 8att(, m. 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 sticksol 1shv)pj ik ::u31d and a -4.0 mC charge is placed at the 50 idloj)k1us13: :vhsp cm mark. What is the electric field at 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 char/ *tfi:/hx* m4zq imkrge is p/mz*t:mr*4 xq i /ikhflaced 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 -7.0 mC are placed at x = 0 and x = 0.20 7vs,bpd 9rgp)m. What is the m97rs ),gvbdp pagnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three coa5z ;waj mj7yu+lkdo3. )h;w zrners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field ;jz7lowa3dymk+); ajhu 5.w z at the center of the square.

  Consider a square which is 1.0 m on a side. Charg*xtlafbg6- .t es 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 fil 6*x .atft-bgeld at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when itvd;u l)1g(umcr9 sgx1k: n3i y is placed in a uniform electric field. What is the magnituderkl1iy39vg; )ud1gmx ( us cn: of this electric field?

  A particle with a charge of 4e,bie9)z t dt -1 1fvrurcp5cg;*cqf;.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 6000 N/C,m 2uw 4 p7c3s vk49ukxhalr7b pointing downward. What charge ma mlk cksb,xrvw24p uu977 3h4ust be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g ;-;i5 wa)5p 4 ml5fcvswocjbmcarries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of grav5b5wj clsw; af4ocmp ;im5)-vity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a char ,kknpgw(- -3x8z ncek4ofq75 hh)yhvge of +2.0 mC. What is the magnitude of the electric fiyfh57k,kzeno ( np4hh8 cq3vkx-w g)-eld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a char su5t* o-vitk4 5vbujd5mx9 7tge of 3.0 mC. What is the electric field 6.0 cm from the cbj4i 5kvvo t5*u9ms5-7tu xtdenter of the sphere?