State the law of conserv6bq/ula0w7:b p ;wa3sf7x tpt ation of electric charge.

  Is it possible for two negative charges to attract each osvc2lj91 mtru k 61d6dther?

  Is it possible for a positive and a negative charge to attract each othe fdv*bee p.6*k)z ti(ir?

  A glass rod is rubbed with a piece of silk. Dur4mh-5ja umsey9muxw0x( cu21 ing the process the glass rod acquires a positive charge and the silkh x 10u 9ys(wx5ajucmm42eum-

  A proton carries a

  The model of the atom shec3; 9d;eluz eows a

  A neutral atom always 5vs00xv.d) j3 nygzrl has

  An atom has more electrons than protons. The att a*h zsn;8huko .vd9*om is

  Materials in which the electrons are bound very tight/t-l fyt9xo f.n/u +ifly to the nuclei are referrtf/9y+ul -ni/ oxf.ft ed to as

  Materials in which the electrons are bound very loosely to the nus. 17 cum14jsr*r nnbhclei and can move anr1s*mbjusn.4 7 r1chbout freely within the material are referred to as

  A negatively charged rod is brou+nezi cvk0 50yg;gcq*ght near one end of an uncharged metal bar. The end of the metal bar farthesv;kz0cqn 5+g0 cye*gi t from the charged rod will be charged

  Sphere A carries a net positive,pc3dm4z1ehbhe m52o charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a4hm pebd5z, hmc31o2e wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posiiu6c)rd k ;3oytively?

  An originally neutral electroscope is bge7kz:y kgdap28w/+o 6 fb-hwriefly touched with a positively charged glass rod. 8o2k z6d b:g +/gepwhaky-f 7w The electroscope

  An originally neutral electroscope is grounded briefly while a positively charfxmgc2.0 qrg6 3x0jj. rjy)xu ged glass rod is held near it. After the glass rod jqx.j.x02fyjg 36r r) ucgmx0is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Then*m.g y bes;hp yufyn57u :ch99 a nega7 y: u*c;g9hfhyy9m ebs5.puntive object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tabla/-)yt 84fu2fxq5 zx9xu;winyymqb4 e. 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 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 chargex /;ytq ynzw4m8xyb)x-u2 4f uif5 q9a on each ball?

  Charge is

  What are the units of thesbnt3e e.8m h3c3hvewt6 wj b ,ub+.0f Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d.;i0+ 8fk bmugd The first charge is larger in magnitude than the sek bm du;f08+igcond charge.

  Sphere A carries a ne ouhc1bc 8kjer)ug2 ch515v)vip k ;q4t charge and sphere B is neutral. They are placed near each other on an insulated table. Which statemiugpv1 o ;b5hkck)uh21 ) v8jrcc54eqent best describes the electrostatic force between them?

  Two charged objects attract each other with a certain n.9qiu5ehst 1)gjw5 gforce. If the charges on both objects are doubled with no change in stgjq )h9.e 55g1snwiueparation, the force between them

  Two charges are separated by a distance d and exert mutual attractive f9gozga r tp-a/fp 3./dorces of F on each other. If the charges are separated by a dgg3/ -zotf .a/ 9drappistance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happsp/mb 7cb992w7vmzoqens to the force between t7b/pc qm 97vb92w oszmhem 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 equal to

  An electron and a proton are separated by a distance of 1o5*iutfwk 4: tiv/aww .* 3rl0mloxf0.0 m. What happens to the magnitude of the force on the proto /lf.to0wavixof*rl mu*35wt :0wi 4kn if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distg zj-yr3i,y+rkvm.:f+( q qeaance of 1.0 m. What happens to the magnitude+.3a ,ivyz+ (ek-ymjfq:r q gr of the 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;7qc4r.z2b o nb9awkv*gj0 u :bm, kdp of 1.0 m. What happens to the size of the force on the proton if the electron is wnvmud70oq.rkg 4:c2;bj*b9ka pz, b moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a sj 77zvs3 wwx(lquare. 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 ow(lwjvzsx 77 3f the square?

  A point charge of +Q is placed a2 lb;d76ng(47suh ddj*luqssi)7- 3iq qyfi st the centroid of an equilateral triangle. When a second charge of +Q is placed ush3sbsgu 64 7nyq- dil)qdi7fd *;7il2q( j sat 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 placed at one of the other vertices?

  Which of the following is not a vectd;w:1 j jj/nep39fris or?

  At twice the distance from a point charge, the* nlw8b *0ahcky ymg-. strength of the electric field

  Is it possible to have a zero electric field value between a negum76 77z,udr14eke7lviqnx wative and positiiu6e q,4 ml7rkn77d7u1ex vwzve charge along the line joining the two charges?

  Is it possible to have a zero electric field value betwea;vad7y-)9z4 ajvg hcen two positive charges along the linevdac)agjay74v9 zh -; joining the two charges?

  Electric field lines near psitive point charges 8m+(rnr(i n:xxen8p t

  The electric field s/, (mtjcgs1a ohown

  Can electric field lines intersect in fr cmu/w.cf-qo+nmy d 3*ee space?

  A solid block of metal in electrostatic equilibrium is plac+q10lwi.n gjv7a 9wzced in a uniform electric field. Give a statement concerning the electric field in the block's in0 c.9qz7 jnal wvgi1w+terior.

  If a solid metal sphere and a hollow metal sphere of eq,h ant )ec.9c5t wngkma() rk2ual diameters are each given the same charge, the electric field (E) midway between the center and the suwtngh n25)( a,) mcekrta.k9crface is

  A cubic block of aluminum.tncekpjh9 5 5+gguis3-q x.a rests on a wooden table in a region where a uniform electric fie+5hptnu- saj3.qeg.ckg59i x ld is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium z j15 p2qq6 mdfi6ell0near an electric charge

  A positive point charge bduqyb 70x*p/ is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the el7x/qd*p 0b byuectric field at a point directly above the hollow sphere has

State three properties of c.pb ;mebu3r1ro, 7rx qonductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron 8jpw3q/ 0doln9 kse/9vqx t-xis $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has z2sh(os-f(sd(p tw : ra net charge of +2.00 mC. How many more protons than electrons does this piece of plasto-(fptwz2s h(ssd:r( ic have?

  What is the charge on 1 kg o3mu 1zfqja571a v e6n+)czz nbf protons?

  An atomic nucleus has aap13v-yl xve4r5-emmovx f:1a ua.0 p 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 2.01 6;htm e3pjpu and -4.0 mC, respectively. What is the magnitude of the eleepph;mu 3j 16tctric force between them?

  A 1.0-C charge is 15 m fr+ dz zk61eguv-om a second charge, and the force between them is 1.0 N. What is the magnitude of the second6-z1gv k+duez charge?

  Two 1.0-C charges have pxg fbk/ b9y(n eec.57a force between them of 1.0 N. How far apart are they?

  The force between a 8ja, j+/j jtocawg /u)9b5fo w$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experj uit*ht9/,x,bt ebzic. + a+gience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what i. xub gzai ct,9b +*,/e+ttihjs the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fir vhzas+o5 buz9 ( 9tho*e0s8dfst charge is at the origin, the secondueh5*( 9zs 0btofsda+h 8v9oz 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 placee8q *vrxb;:p 5mi5 hatd on 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 of the epr: vh 5tam5qxbe *;8ilectrostatic force which acts on the charge at the origin?

  Three point charges are located at the following posujd g jnbu 33mi9)fyjp.(ur/1itions: Q1 = 2.00 mC at x = 1.0b )juf.g9(j/id 3p 1rnymu3uj0 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 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a secfpoip c;utv1 jh6gn rqh--744 ond 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 pl toui1 n-4h4r c-qp;f6v7pg hjaced at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1)ifbush ml56 29)62vje tsxig .0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force sf22 6 jsm96ebivlh5gix)u)t on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is a-p;2g1d cy zg 7r.h .iqzl6god u/eii.t (0, 0.10 m); Q3 = 5.0 nC is at (0,d62grui-ezilp .1q/7zh.d ;gy o gi. c 0). What 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 equil;9 cl- xza14rbwz2ua g6woe8vateral triangle which measures 30 cm on a side. What is cwo9lzw18 ea2gr6v4z; ba ux- 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 m. At what poin9jlf 3 j4ps*knt, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic f sl*4jn fpj3k9orce acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge isx2 hkt9 tvl q.l8xi)c( at x = 4.0 m. Where on the x-axis can a th xt (vt29i. )qlchxl8kird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chawy n6t ;es;/+x lj,f6n,oasyhrge -q is placed at x = 2a. Where can a third positive ;f ao6sx+e6 lt;n,hwy ,ynsj/ charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of fwg2tp 0lye84q9v+xz $4.0 \times 10^{12} \; electrons$ 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 m041/tvhemit of a fixed prommtet 1 04v/hiton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common pkg*1x1rm f-fw oint by nonconducting threads which are 3 m-k1r*1gwffx0 cm long. Both are given 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 is t, 9 seitxo;t/kc-wi3phe magnitude of the electric fieix,wk/ce- os;ip3 t t9ld at a distance of 1.0 m from the nucleus?

  What are the magnitude ar4k8c jb0z mz+nd direction of the electric field at a distance of 1.50 m from a 50.0-nC chargerkm0cjzzb+ 84?

  A 5.0-C charge is 10 m from a small test charge. What is the magnog x3oub7(b r rt)n,c,itude of the electrib 7onc( rx,)uort b3,gc field at the location of the test charge?

  A 5.0-C charge is 10 m pg3 kdzy* 95zhay3mdep :s-e2from a small test charge. What is the direction of the electric 3ed :y*2eap p3y5 m kzz9shd-gfield?

  A 5.0-C charge is 10c7pdh-6pd06 l/g desk m from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location6dl/ hd6kd 0spc-g7p e of the test charge?

  Two point charges each have a value of 3.0 C and k4j9q4gf(dm d are separated by a distance of 4.0 m. What is the electric field at a point midway between the two charm4d9dfg4 qjk (ges?

  A 5.0-mC charge is placed at taru17dh8x6z jhe 0 cm mark of a meter stick and a -4.0 mC charge is placed a7x8hru1ajd z 6t the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at1fa,62u 4jkum x7c rvg the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 52g6u7urf4vcj 1 ma k,x0 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 = 0nh w vcr9)i .fafs64 ka(3zu4lqs/se* eay,*y.20 m. What is the mag es*c/ f)3yaeks9 lwh(n4*qas ay6.u,fz vri4nitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at 9coy y v,gf5bj,tj1d7the three corners of a square of side 0.50 m. The last corner is occupied by a -3,d,c v9yf 5j7yjtbo g1.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m1zda:y 6f f4fi 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 m:iyf f6a 1z4fdagnitude 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 pl:s p r9dpc/u)rqgckc(*v (8wk aced in a uniform electric field. What is the magnitude of this k((*9wcqr/cg8 rvp ucpkds:)electric field?

  A particle with a charge of 4.0yd/6zc .yw sq9 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 ilx l/f95jb4jqu1 ; nzvs placed in an electric field of 6000 N/C pointing downward. What charge must be placed on tx 9lq /vbzjf5l1unj;4he ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placedu*3l3c2xiw kr inside a uniform electric field, and is suspended against tlw*c3r3iu kx 2he force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Whaf4j z 64bi:sgtnd)6n8 x9h6xmy jp5cot is the magnitude of the electric field 5.0 cm from the xc6yx4j8) ozpis66n9bhgdn5 f t:jm4 sphere's surface?

  A metal sphere of radius 2.0 /ih;g0hw7vy m cm carries a charge of 3.0 mC. What is the electric hw m0;ygi/v7 hfield 6.0 cm from the center of the sphere?