State the law of conservation o 7 j8a )rkfp,srg8fw1if electric charge.

  Is it possible for two negative chargn3xf9 p(qmn y/p83+u fb 6c9ydbe- aykes to attract each other?

  Is it possible for a po lxl t;z4 8*icqo*ys+jsitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of 7k2d ru6izx .nlo c(g,silk. During the process the glass rod acquires a positive charge alro.ugx,k6( 2ciz7dnnd the silk

  A proton carries a

  The model of the atom shoss++ p2ks-7sd.xg v ddws a

  A neutral atom alwayspk ; fw6n+kiut1 p fgx+k8vb2. has

  An atom has more electrons thokpycwp7,,h(iv y q0 :an protons. The atom is

  Materials in which the electrons+xzze6.v-k.suj9 tgbpn ;f;v are bound very tightly to the nuclei are referred to e jg vknv -zxtzb.f;u.p6+9;s as

  Materials in which the electrons are bound verycmqw/ts oh38/ loosely to the nuclei and can move abou t8qs3//cm woht freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal b*10 c bk3gv a8gnlkj/kar. The end of the metal bar farthest from thb1c0v/lkkj 3k g8a*nge charged rod will be charged

  Sphere A carries a net positive chargugoc f:+n vkvj*;jfq+n(rz 7,e, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched wit(fr:fuvnn gqk+j cj7zv,+* o;h a wire that is grounded. Which statement is correct?

  How can a negatively (gk -0hl4mw ibcharged rod charge an electroscope positively?

  An originally neutral electroscope isc6*sd :xulyz 1 briefly touched with a positively charged glass ro6x1yz du*cs l:d. The electroscope

  An originally neutral elecv, . o/uy5h:d aomszb:troscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed,m::zuob/o s,d5 v a.hy the electroscope

  A positive object touches asxa 6u*/fcav)2;l ;kh) kcyqp neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Wh l ;xkfc 6h2)kcsa;yp)q*u/avat happens to the leaves?

  A large negatively charged object is placed on an insulate-*f jhf1q z:j fne f/gy5.gd5ld table. A neutral metallic ball rolls straight toward the lyfhjzf/1q .j5 eff*ngg:5- d 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 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 Coulompyz+n n:8i h3mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first 23g9zwzxlwbdn/u h9 4ua +6vtcharge is larger in magnitude than the s bl 92g 4hzxnuzwa3/d+w9tu 6vecond charge.

  Sphere A carries a net charge and sphe;uqg w+cm 4iikr)5;w q*a-7vku 7ecrbre B is neutral. They are placed near each other on an insulated table. Which statement best describes teu-7i+c c;brwk )a4 5ukwivq* q7r;g mhe electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges 0c;pyvg3 2f3.so cn7u tlic63dto0s hon both objects are dvustcyst od0lp7 h33 ;f36i gc20.cnooubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive fl4acnhy-jq b0 qef44(orces of F 44chb a lyfnqj(-0q4e on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other;zk+;b v fnmp8 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 centerzm8v; pn;+kf bs 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 hapewwmtlsss5 ;9.6jzd1 pens to the magnitude of the force on the proton if a second electron is placed next to the.w1l6dmtss9w zj5s ;e first electron?

  An electron and a proton are s( /dif)a h7usneparated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the protoa(/ dish)nf7 un?

  An electron and a proton are(jyqrcl+6))szq cs ;4 s hae0f separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0l4)c; j c+qefqssas )(r0y 6hz.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second point c rvuxm/5.uzf4harge 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 positiv5ufv4xm z. /rue charge at the center of the square?

  A point charge of +Q is plac af; tb 90xt-mdg6kgu3,sz4r-xmqe *ved at the centroid 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 chr tq xgmkm3ftv *4b0-9uads,x6g- z;earge of +Q placed at one of the other vertices?

  Which of the followingmp qf6k++admm01m1kv is not a vector?

  At twice the distance from a point charge, the strength of the electg4 3xge5(h yyhstp l(7ric field

  Is it possible to have a zero electric field valbi5 k2n )nd.rlue between a negative and positive chn rb5 ldk)n.2iarge along the line joining the two charges?

  Is it possible to have 4 j x148thguymufs)pj;0 r fziu8u4)pa zero electric field value between two positive charges along the line joining ttyi4 ))hp ju4f;uj umu 0z14pxsfgr88 he two charges?

  Electric field lines near psitive point ch0ap v8hl)s8 inh32x 4ujbz cp)1;igqearges

  The electric field showngro.uy4a 4)yn (3fcdfw.lrs 3

  Can electric field lines )rz(yc*6)2yw ma z fzyintersect in free space?

  A solid block of metal in electrostatic equilh f2oo )kk:q71.:cvanb-f. byxi:kyfxm q, 6n ibrium is placed in a uniform electric fieldfo:-kk1.oiqfy a2.f : 6cvyn7 bmn),hk qx:x b. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere-vv6iv 25i2ikyd 8xd o and a hollow metal sphere of equal diameters are each given the s5-iv6o k2viydvxi d82 ame charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum re 4 y8pu eafidhw;e)r63/3adaqsts on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerni e 33u qadh)48eap ;ayrw6/fidng the charge on the block's top surface?

  If a conductor is in elehq/lrq,0 auhww)uj+sq0 z n(+0jqrm ) ctrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow m.g8pjgr:i ( k9u eg, lohiz/:a l5ik2metallic sphere that is grounded. As compared to the case without the hollow spherepmku.i gzg/5:lrgo(ai 9 2ki ,:lh8je, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equi wpw, vdjbxqh) -yuk,1(16.snzr/dw d librium.

State Gauss's law.

  The charge carried bkle / wg:qhw9pz y-3y:d n4in)y one 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 g hs6tl)icc 3-v-bm 9enet charge of +2.00 mC. How many more protons than electrons doesc)e-cg39m6bv lsit h- this piece of plastic have?

  What is the charge on 1 kg of p h2(8 9 vm c9 c -hclubs+z+quanhiy8gvs*+4fnrotons?

  An atomic nucleus has 0xpf(+c,kxu *erf*hr a 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 2w/ah07y y9o ,0lfhh( p1amjlnh.hj7q.0 and -4.0 mC, respectively. What is the magp1/ h m f0oll07,njy7aahj h(hhqyw9.nitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and 5k7t *q smns5xthe force between them is 1.0 N. What is the magnitude of the second ch5kqms 5xn*7 tsarge?

  Two 1.0-C charges have a force between them of 1.0 N. How uz7mstsb5p dz*l8(-m far apart are they?

  The force between a 8a- zscy1w-) zs*yqbi$30 \; mC$ 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 they ar ul6phh6 lx:a,e moved to a new separation of 8.0 cm, what is the electric force betwee, 6lh l6a:hxupn them?

  Three identical point charges of 2.0 mC are placed on the 7sw92bvi mvhc p f66y; ze:bu8x-axis. The first charge is at the origin, the second to the right at x hvw2 9;b6ibm7ecs 8fy:zp6uv= 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 onm+ic .uc m9u:qi3v5ah the x-axis. 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 o hmmiq:ai5+9 vuu.c3cf the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positionmei9: vn ejbg1x 0ofs(2sm31e s: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the19sisgonmmxv(f e 3b e2j1:e0 force on the 3.00-mC charge?

  A point charge of +Q is plir sp1 zl0m;gb:,g9 hgaced 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 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 l0;1 m:r gpis h,zg9bglower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1n -j xnht.a58b.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nxbtj 5- han.n8C charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1y l56 bh88npwf.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the netbn5 8fwyhp68l force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertc6.b( al 91an3xq4hg *0 dobzn8ko1zgmz/ qnjices of an equilateral triangle which measures 30 cm on a k8mqxo14zlnh/gao q(gd *1nz 0za6n9 3jcbb. side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charg x8q5oqa3yna v5r. )hzes of +Q and +4Q, which are separated 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 tx rnh ayqqaz 55o.8)3vhe electrostatic force acting on it would be zero?

  A +3.0-C charge is at theqty6npv;e: pqd +bhxa9510 vs origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the 6q hq0eyx95 dpp+ atnv1bv;s :net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. sm 6nod+/d:gt Where can a third positive charge +:d+d6n otmgs/q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of..p0 i 0 5vt a 1mt.hac7hf99rpfvdhdd $4.0 \times 10^{12} \; electrons$ 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 gravity by the attraction of a fi6:b,-iasmc4elws h hmvwl8 .8 xed proton some distance above it. hc.i4m:e8ww 6smh,l8 v -lasb How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductivc-85g mel2kzo x.*g xng threads which are 30 cm long. Both are given identical charges, and the electrostatic xcm2g .5o-vzlgek8*x 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 +br2t ni eq.l cyzo)c4(a41 8 rq3.vzbu40e. What is the magnitude of the electric field at a distance of 1.0 m from th( )lcz3irra4yqbbc 1u.nq2o4tez . 8ve nucleus?

  What are the magnitude and direction of thb);d;c osz:8 ia* aoc t .d,r4geamhq8e electric field at a distance of 1.50 m from tcrazaahi. ;, o c; e 88dqm)db4sog*:a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitud( qy2kzhwc9ch)tqj35z .bo3la sd*) ne of the electric field at the locat y2l)5zj 93z.nk(t)c sco * q3hqdawbhion of the test charge?

  A 5.0-C charge is 10 m from a small test chai3/e e-c glg q4t.alh-rge. What is the direction of the elec -l.g3lhgei qtc/ea-4 tric field?

  A 5.0-C charge is 10 m from a small test chargh:nf7 j)cd ydm4yi 88scd5 zn;e. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location 8fmh 4 ycz)si5yc;jn7 :ddn8dof the test charge?

  Two point charges each have a value of 3.0 C and are separated byqc7 n) +pt17 q wfnt5ypp,m,za a distance of 4.0 m.t7z ap)ntmwfy,, 7+qc5qnp1 p 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 stick)xx r1zbfz -ox+z5(ye)pm kh / and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30xrmop1x zh+-ye )b5zzf x)(k/ cm mark?

  A 5.0-mC charge is placed at tu0s3.iw2q4bm j j/7f z g4oytthe 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 joiningg0 out2/ifj j 34b74mz.twsqy the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed kjuf5vh36xrs6 jzu8imd v9k9(h0(td 7h cz ;kat x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway0z8 hk;9t7 3j5rdh c9j(kim6f(vuu sz xdkh6v between them?

  Three 3.0 mC charges are at the three corners of a sq lfvcn8s,tqoa +t4 yb((ey, 8xq1y;qh4bn0qbuare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. ,t bxqb e (f1b(8sl nn08ay4;vyq+qh 4tqy,oc Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are s iqe 6,xjqt (k;3i3gaf dy/0c, izll6placed at the corners of the square as follows: +4.0 mC at (0, si6 jl qc,d;3/30aix(tq6ie ,kz gy fl0); +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 wxv/pt a u,9b7.e2p1od-xkxdz hen it is placed in a uniform electric field. What is the magnitude of this electrx,7e-doxpdv2b uzxt/ 9p.a 1k ic field?

  A particle with a charge ob -dx2s0hnnd;fww a 8*f 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 e-0gif+)eul tv lectric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspe-iuv l +gef)0tnded?

  A foam ball of mass 0.15hm5vihe*8 xmof yy-,vkn; .fh k f35)o0 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are vfo3hf;hv.*o )k- 8k ifyymem nxh5,5the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a 32m lugryf ,e:charge of +2.0 mC. What is the magnitude of thuem2ygr :lf3 ,e electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm cp zud076ve i7rarries a charge of 3.0 mC. What is the electric field 6.0 cm fr vd7i67ru0p zeom the center of the sphere?