State the law of conservatin((q, )5xlnf fldk -/pz )jzamon of electric charge.

  Is it possible for two negative charges to attract ea1pk)m(kmh xx. ch other?

  Is it possible for a positive and a negative chai: b;z2rt/jpv rge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the g2 n(x8dirnp;v,s oau-lass rod acquires a positive a-2x ,nspodurv(i8; ncharge and the silk

  A proton carries a

  The model of the atom shol ylu ep:0 uuy7f5*4 s6sl;rckws a

  A neutral atom alwaysc6bxyflz61 tile 1q98 has

  An atom has more electrons than protons. mrmk 9fty,2m1The atom is

  Materials in which the electrons are bound very tightly to the nuclei are re5)qa8 )i oye6sda;sguferred6aydsse )a;u 8qo)g 5i to as

  Materials in which the electren9oi,iq+ y4 sons are bound very loosely to the nuclei and can move about freely within the materi4oniy iq +9s,eal are referred to as

  A negatively charged rod is brou ei/sv2l; i(g+ao i9fgght near one end of an uncharged metal bar. The end of the metal bar farthest from the charvif;g/2geas(+ ili 9 oged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral*c( *fsvd(jc. pfyi a0zq5ypiv ad678. They are placeqisapyd6fp c c.f*yv0jdiz( 8* v7a (5d near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively sgqwjs0 id:b31a5v d 8charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charged 56yog.s7gj/tc0agaaglass rod. The eleg a 5 0ac/ajgo.s7ygt6ctroscope

  An originally neutral electroscope is grounded briefly while a positivf2pl/3xb ; o+t 9qieo2intnu8ely charged glasqn/o 38+ ointetblp92 iu 2fx;s rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electrosceh-cef;0+fl:f4 kxtqx hy8.iope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happekc q.;- 8yli40+fhf hee tf:xxns to the leaves?

  A large negatively ch* yn.uwk az,, o+,b;dbpe-*gum fub/ larged object is placed on an insulated table. 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 *+bue/ul- u; bpgo*.kn,,z, w dmaybfball, 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 conswfu p-3sou+r; tant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is ln)g xt3x h3hp.arger in magnitude than the second charge)n3tx.3hxhgp .

  Sphere A carries a net charge and sphere B is neutra/m9 pn4(tcf jnl. They are placed near eac /t49nj npm(fch other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the ,dtri,h; h :0yxvd3cfcharges on both objects are doubled with no change in separ,i,h dhcrd t0xyvf: ;3ation, the force between them

  Two charges are separated by a distance d and exert mutual attractalea /:7.lo naive forces of F on each other. If the charges are sepao:a el/l.7naarated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Wh1 0n*qiwl3 nyhat happens to the force between them if one charge is doubled, the other charge is tripled, and the 0qw1in *3l yhnseparation 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 byrb n;c5h xjj sk/f)7/s a distance of 1.0 m. What happens to the /s7ncb j5hrf /xs;)jkmagnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated biih qf7q,23e uy a distance of 1.0 m. What happens to the magnitude of uh72ei,i fq3 qthe force on the 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. What happenvtv-ko j 4+w.ls to the size of the force on the proto+v-jt .w4 lovkn if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is pla4 5ri3x(mmct+v)f nq fced 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 squax3)rm4qfm5 c + fvit(nre?

  A point charge of +Q is placed at the centroid of an equilateral triangle. When4gou;f ,jz05jijzkyhl t )*m5/ y5voq a second charge of +Q is placed at one of the triangle's vertices, an electrostatvzj;5my l0q y*4h,t jf /)zoou5g5jkiic 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 placed at one of the other vertices?

  Which of the following is notsb3(ve mf 8d2g a vector?

  At twice the distance from a point charge, the strengt t+ de lw59r46dqu2+ (zedbymqh of the electric field

  Is it possible to have a zero electric field value betwevlds .(a0yaw-en a negative and positive charge along .d s(vaw0-ayl the line joining the two charges?

  Is it possible to ha4z x2*lic5-ng81zq ( mm*rney y/tpelve a zero electric field value between two positive charges along the linp1x2(4yye *r 5/tzl*ilz q en8cm m-gne joining the two charges?

  Electric field lines near psitive pobl kcqn1)mk3 o;d5woill1k g r*461e rint charges

  The electric field shown;t php;,yk8 wm

  Can electric field linesozjacsoh dr,w( :cy5d*ufu7ygoti l50o/- -8 intersect in free space?

  A solid block of metal in elect6gh r+j izf8-lrostatic equilibrium is placed in a uniform electric field. Give a statement concerningh f r8-il6gzj+ the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equa* fdgjas0 zi-.l diameters are each given the same charge, the electric field (Efgsa0.*i- zj d) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden t ezi ,f0at4cc(able in a region where a uniform electric field is directed straiaez4tc0c ,f(ight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charg97,hwzgv *eyle

  A positive point chargeasz6c,u(m qqc, la vi;gb78b.e f5-dj is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow spher6c eb,q.d58ivjba( u, alq;c mf- gz7se has

State three properties of conduud gc5(wz (r7xctors in static equilibrium.

State Gauss's law.

  The charge carried by one e7m i) xtx 5cvkh m2g/x*p;bpu:9pzl;alectron 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 protons than ocok 1lxt+ .k(( gbgmyfi-2h)electrons does this piece of plastic havehgc)mk 2( +kb- lo(foy.1tx ig?

  What is the charge on 1 kg of proto 0 f: ,z/f)cmeabi(weyns?

  An atomic nucleus has k/6qe av:3m9 h,a vo*om dx c*9+qfocua 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,lw+et(h33 hpkk+ yq :l/o,q)s,gjse c.qf)qe have charge values of 2.0 and -4.0 mC, respectively. What is the f+kjqh3:w)eqtl+ s3 c /y qsg.,hol,)qp ee (kmagnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the forlo* 0pmvo8wk *ce between them is 1.0 N. What is the magnitude of thewo*l8op*m0kv second charge?

  Two 1.0-C charges have a force besjr;lka 2h2j 2 v2qe.ntween them of 1.0 N. How far apart are they?

  The force between a 8hmja/7vt7pygwtds1 8/zcl,t -zd f+$30 \; mC$ 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-op)dvnu2/ w g58u /yqtN force. If they are moved/ouqu/8p2 tnvw 5gy)d to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point(iwp( k tyc -i uu*8f32b6an0qj b5mzf charges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second c(8utfi0k y fbj2*5zw6bqn pu3(a-mi 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 pla.h;6kjlg jzswq )go *ur,w7 y8ced 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 direct)gj. 6 ;gy *q7z8 k,solwhwjurion of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = ju1tv o *cy2+k1:kwkw2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 tw yo*ck1:j k1vk2 +wum. 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 secon)iinc6f2 l,vxic 7 2iod point charge of -Q is placed at the upper-leoc27ii )26vi,cn xil fft 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 is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 icv+ ae-g7p4dkp2 6,pvs/ c, mmx jtz5nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude m46e ms5av-jtppcp +zcxgk v2/d,,i7of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0h g+q5b9 kvu)w)c jod* nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net fkd g)bq)w*c9 jhou5v+ orce on the 5.0 nC charge?

  Three identical charges of 3.0 mC ar:jps bukkw;y7c)e ,2be placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of thekw)7 y;bu sp,2e:jbkc electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At w ) *au*y 9udt9mwy6kwqhat point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic fuwumy 6 wqt9*k9da y)*orce acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. q riixnhagp(6gg(ha/.,gfb*i(v g2wz03z e2 Where on the x-axis can a third charge be placed so the net force on it is raz*0zbg,3( xgn2i6ggah ( .v/e f(pig wq i2hzero?

  Charge +2q is placed at the origin and charge -q izd0*obsdxm4; a ( x3jjs placed at x = 2a. Where can a third positive charge +q be placed;azs(m bxxjj40 *3dd o so that the force on it is zero?

  A copper penny has a mass of 3.0 :w(y2* jf adlhg. 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 fhd5q7hog,g z0 orce of gravity by the attraction of a fixed proton some distance above it. How far above the electroqgz7hdg,h0 o5 n is the proton?

  Two 0.20-g metal spheres are hung from k:kwvd1 (0ww1 gcx 8vub8nx8ta 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 the threads iv v0b8dn wk w gt1x:18wx(kuc8s $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of the electricnoqb8 b 08g8bk.a nt0eb-zk9r7en0eq field at a distance of 1.aebe9e8 ng.08b-0ztqn0bkq bn78rk o0 m from the nucleus?

  What are the magnitude and direction of the /8b jvuz0df kjawwd.xe- :k+;electric field at a distance of 1.50 m from a +bzw;8 -kvjw.dk defau/0:jx50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. ult,6sm ae8jj: b)rj0 What is the magnitude of the electric field at m0:lejj ,8sbt) j6 ruathe location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direz u(x3n9 h g7o/d6mu ikt;kam+ction of the electric fie(z7; x+mht9k guau n63id/omkld?

  A 5.0-C charge is 10 m from a sm/w8w.tv urmmd0 n /ub2all test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locatbwmru0 wtn2 u. mvd//8ion of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance of b*o3+nz; yw5zzrm1e9a5w:fd ya 9 cnk 4.0 m. W:zf z5aecoa+wk93m9w* nzn5yd ;1 yrbhat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is p.lnojpi x773i s o oz6tk(.9yflaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is thex3 iof( ilko. 6s 7y7n.tjzp9o electric field at the 30 cm mark?

  A 5.0-mC charge is placed at t/v : djr/,rucva5bo7e he 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 eucarr//v:b j 5d,v 7ois the electric field zero?

  Two point charges of +3.0 mC and -7.0 mCanfqvnz;((;hn w cp+-(xiw , r are placed at x = 0 and x = 0.20 m. What is the magnitude of the electr(n;(, q-xczihpn+ vwnaw fr;(ic field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squar 82rgwti ikp1o 8+:+mq zc36yr7ycfuq/ gk jg5e of side 0.50 m. The last corner is occupied by a -3.0 mC charge. crf gmck/2p i o8i+rq5ygu :g3k qty6 78+z1jwFind the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are pla3, iagflmhe4s2.i* ox9u eqvrbl 6:u:ced at the corners of the square as follows: +4.0 9 .vqe*:la:g ixfibml2uer3 so64h u ,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 u6q/dkd1/k7 9 oaxeq/0rfpk ouniform electri/ 7/urp 9kaeq61 f/kkod0qodxc field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mafaqfnp; yt 54k9sf +/qss 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 pl *wxddk08.azu ekogr 4,ny2k2aced in an electric field of 6000 N/C pointingo nr ak2zd.28 ,k4 kygd*ew0ux downward. 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. 6nizu- ;jf;y o;tlq: lThe ball is placed inside a uniform electric field, and is suspended against the force of gravity.jliq;yu ;nflzt-;:6 o What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 p ,v7n+/8 e(;llcpfot a 2jjxomC. What is the magnitude of the electric field 5.0 cm from thet8lx cona+fep(p72j/ol, ;jv sphere's surface?

  A metal sphere of radiue+v47 n tkxd j7*gz- 8njqia.xp /f(mys 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the cent(7vd8 gm n fxjakq e .pxntz/-+j*7y4ier of the sphere?