State the law of conservation of ela :15mqit /2vi42n,xnck.hj rfsh sp1 ectric charge.

  Is it possible for two negative chargeb-orgwn zi f 9g1e/(b5s to attract each other?

  Is it possible for a positive3wjrncu.tfwj1g5a87t s f8t 5 a2s x;e and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the f0tz9n u5nb*q ac 4.jeglass rod acquiresnzabfj5 0qn t94*ceu . a positive charge and the silk

  A proton carries a

  The model of the atom 52mh1.k: pu; aaonpeha cz)3yshows a

  A neutral atom always cw epfg0krnt* x,s7/) has

  An atom has more electrons than protons. The at wyt)a.q(eb.uom is

  Materials in which the electrons are bounitvd ak-nx-)7p2tjm 9d very tightly to the nuclei are referred to ajp ta7dvk9t x2i)--n ms

  Materials in which the electrons are bound very loosely y-fzcy m6k. a)pw7 6hdwoa1e nj6 2zn*to the nuclei and can mozmjwn1kpea 7h6 a6 fw*cz.nd-2y)6yove about freely within the material are referred to as

  A negatively charged rod3.-wxalu t ut0t k-w8w is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the chargedau0w k-38. txl wutt-w rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Th6ciwwti7j rh ds00i4* ey are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groundedi7hcrw*s60 0tj 4widi . Which statement is correct?

  How can a negatively charged rod charge an electroscope j8 2wd m93wtbxpositively?

  An originally neutral electroscope is briefly touched with51bd/x-ptkiy a positively charged ki-/bxy15p dtglass rod. The electroscope

  An originally neutral electroscope l25.qkmr 2c/0mj 7)bgvvkzpais grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, t22q.ma kjb)c50v rlkg zv/pm 7he electroscope

  A positive object touches a neutral electroscope, and the leaves sepamm4q6)jbtxi 3 qm .0nbrate. Then a negative object is brought near the elec3.n qm)mtb6 j0mxib 4qtroscope, but does not touch it. What happens to the leaves?

  A large negatively charged o*u z ;h7rdnuw g;*hdg20aa-bx bject 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 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*dgag7bdh;ur -ax; *0hunw 2z each ball?

  Charge is

  What are the units of the Coulom )dk*8/-lh*,yf;h m h nijx6hu2rt aevb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is lar q(,) 5q lvfln 4up+8lvfy--kjoetc8vger in magnitude than th,8vno)4(t yv-pk l j8+ elculvf fqq5-e second charge.

  Sphere A carries a net charge and sphere B hu;q i95a b u:.0qqv(jgao2 l5 z3ntdqis neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between them .nqqt 2hqdau5bziu;qa j(go l9v0 5:3?

  Two charged objects attract e pus)*ovb;bd+ery37mzm-db 1 ach other with a certain force. If the charges on both oym d-;+1zb u3 *dpovb7brmes) bjects are doubled with no change in separation, the force between them

  Two charges are separated by a dis,u 5dzazai-r*/41aho i -7xj6 gcny jwtance d and exert mutual attractive forces of F on each other. If the charges are separated by a distancz 7wr-h*6iu, zix-a5doya1 gc4ja/j ne of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F9(fgygur gx8 ror+94dftsaz )jh:m 88. 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 value? The four4 gr(f +szhr:f899gm ydo)8t xj8agrce is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens to 7xa rh3z h5ki(ioyz kt9eri54exz8) )the magnitude of the force on the proton if a second electron is placed next to the firri 3r49)eitx yzi5k87 a(kzeo)xz 5hh st electron?

  An electron and a prowvw l1ypny+ . i t /n2cpya n1-yb2269syq.iojton are separated by a distance of 1.0 m. What happens to the magnip-2 w2nt+iy1 y y6/sinbc.9jnp1q y 2laovyw.tude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated b v k6dmwi(z 2:dt.pz0py a distance of 1.0 m. What happens to the si:i.d2k0 pz6ztwv( m dpze of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of iz 3eshs).id,*sn ydveyp0,- a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostvys* szi-d3 h,)yd.i,sp nee0atic 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 square?

  A point charge of +Q is placed at the centroid of an equilateraly9bv- rc,9m+,0rmxmtq gnp 6l triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0l0cmm -+n99ptq vb,y6mx rrg, 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 vectorr, hrpu7 +c,izs1 bea c.e+ue4?

  At twice the distance from a point charge, the strength of the electric f5i8 -dzf;rpei ield

  Is it possible to have a zero ey,a/mq+x *s xmlectric field value between a negative and positive charge along the line joinis mq,yxxa*/m+ ng the two charges?

  Is it possible to have a zero electric field value between cz nn e+r4u bb*3/j3svtwo positive charges along thenebz+ c4nj3b u3s*v/r line joining the two charges?

  Electric field lines near psitive pobx:5af.kp v6 lz4subh-2 l.ou int charges

  The electric field shown b)p q(eglg8 0r.y :xac

  Can electric field lines 7i 9exksjb* fr y /, y)*nc3mzpdit*i4intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed ip/1u,9+gm.pu mg h.ufn padhd :2ykl: n a uniform electric field. Give a statement concerning the electric fihlpdy.2,fgu 9mkm /pd+ gu 1::h.au npeld in the block's interior.

  If a solid metal sphere an 2x66levj8jlm 2.yglyd a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway be. xl6l6 jy2vgy2mj l8etween the center and the surface is

  A cubic block of aluminum rests on a wood48yn )e.di fu6j ypg) ez2iipw+b55qnen table in a region where a uniform ele2e 84pnzi 5eu dyqy)w+p6gbif5nji).ctric 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 electrisa( x: xvmy-8ac charge

  A positive point charge ihvayx( -2fz/ben6ke9t xp *0 y*hmpd4 s enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field ahzb/( f -yxy 4h*m eted9nv*2k x06ppat a point directly above the hollow sphere has

State three properties of conductors 0 wc)xhy2t2j bin static equilibrium.

State Gauss's law.

  The charge carried by one e ure,rf (5.vggbtji8: df 4uo.f1z mz:lectron 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 58 m) x2u l.ud,tyggewsi4p 5smore protons than electrons does this piece of plastic hmwp xg sd eltu)y855g 2u,.is4ave?

  What is the charge on hj*3p(qtatxf i95z , b1 kg of protons?

  An atomic nucleus has a chargeo cxtw+gfd6p4(qunfb;0ax9pjq +:u: 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 - rv8lpn7rrinx3( 2f u-4.0 mC, respectively. What ir-27xl 83n(r niufvrps the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the foyz/lzkxub:1k 7: +pesc;f/g;rowp f(ik3 fk 5rce between them is 1.0 N. What is the magnits y+i5 f7:b(k 1kxrkfcg; /;: pew/lopfzzuk3ude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Hr7;sxdhptrold wev3,-f), s 58 ei73ft *avw now far apart are they?

  The force between a kfngu(*1x cl+$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm aparn 0*m+puvtmx8 t, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between them?xu0n pv8m+* tm

  Three identical point -kmr1pge)r zx9ka *3vcharges of 2.0 mC are placed on the x-axis. The first charge is at the origin,rvg)*-ra9kk pe 1x 3zm 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 the5x9/mu 0 bsxwx 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 thex /xw5s0m ub9x 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 locatwm2j3kw5exoa, t; da (ed at the following positions: 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 the force on thea ek( 2w tx3w5mjo,ad; 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a sec k,jhd,-otp3 qond 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 centerdqo k,j-pt,h 3. 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); co/ba9tr)fcz5ua,(mq8lju t 4 z-- ev Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whc) aqe,l9(-mtja5 robz 8 /cv-uut4fzat 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 qj l thb(+0c+v)i d(drd)v d6xjpzi-6nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0).)v(x qlc6h6j+)div rzjd(pi t+ 0dbd- What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 ;+ x 3y4hs, u9ncw s6waoimqf*mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force whichs69i,+wqfxmuw cosay 4;hn *3 acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At 28mfcca0 9py ,xpx/ m oe4k+jpwhat point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting k4c8j/p2e0pm x9ma ,fy oc+pxon 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. Wherb-2o ya m g3q(ivj5+zze on the x-axis can a third cha-mi5(3 j+goz2 vaqyb zrge be placed so the net force on it is zero?

  Charge +2q is placed at thin2f+h oqtw j zpu,6(b+p pe-i7ye 1o5e origin and charge -q is placed at x = 2a. Where can a third positipu7h 5bf zi,1 w+oyq-(t ijop2 pn6e+eve charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 4 ,f6mt wdpb4ibgod 99g. 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 gravity by thbrg+b;+* y9w yl pnul4e attraction of a fixed proton some distance above it. How far above the electron is the proton?9b rpgb*yw4y+ulnl ;+

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads wm(wtp4db zz+ nj-u +3or *0cqthich are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the an3unzqtbz4 r 0 jc*d+(+-wmoptgle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. Wha g8 -1nkj:woayt is the magnitude of the electric field at a distance oa1 8n:gj-wk oyf 1.0 m from the nucleus?

  What are the magnitude4tdb uq(mku75i8c :bs and direction of the electric field at a distance of 1.50 m from a 50.0-nC ch4qd8bsm7 ct:i(u b 5kuarge?

  A 5.0-C charge is 10 m from a small(/epd1bq 4 nhz test charge. What is the magnitude of the electric fien/q 14ehdzb p(ld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is uv9j3a n,+ jkf2,zxbin/rtk:c h.i4 sthe direction of the electric field injv9+bkx:,rst4/a2c nzij .k3 hf u,?

  A 5.0-C charge is 10 m from a small tg) q8nl s0b.t*l v)puzest charge. What is the magnitude of the force experienced by a 1.0 nC charge plnpq .ul80)tvlgz) sb*aced at the location of the test charge?

  Two point charges each have a value w/mu*7c k+tp7w z*.u ) ,ypbe9mpp jqaof 3.0 C and are separated by a distance of 4.0 m. What is the electric field atqc u pm7p+zj up *)k,/.*7mb9peyw wta a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick anow o;8jp1 6jbhd a -4.0 mC charge is placed at the 50 cm mark. What is the electrowp1h;6o j8bjic field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a q9.wvm fqbd1*ufwd d( 8 o+rj*-4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two c(8vd 9u*f mfq d+j w.b1wd*oqrharges is the electric field zero?

  Two point charges of +3.0 mC ani ,hm wd4 :iwtdsadpj qay : e-5sn1y2s2-i;1td -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betsw11p:i e5s-4q w; ,sy2t2day ijnd -dmh:tia ween them?

  Three 3.0 mC charges are at the three s9vjgzamttz/ 2b 9cgn 4c7:w3ol li5: corners of a square of side 0.50 m. The lavglbj zcw3: /s9gito4a: n9 l572tmczst corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is g ms/zss/ yc;545qc7ikbr go31.0 m 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 magnitukgzs4 y5m cgr3oc/isb ;s q75/de 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 placema b( 2a-m:mh k:mr2ctefwa67d in a uniform electric field. What is the magnitude of thith-mr7f2:a:m(a ebak2 w6mcms electric field?

  A particle with a charge of 4.0 mzbq -7)cxcjqoec o5h0 n-w*6s C 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 ,qboa g9 7lj(gm 0f5biof 6000 N/C pointing downward. What charge must be placed on the ball for it tojo0faq 7l,gb9i5 g(bm be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is plac06igb l wifhhq *s:(m4ed inside a uniform electric fi wfilqg6h4*b (hm:s0ield, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +26zjp hlcu+73e)o;n ep .0 mC. What is the magnitude of the electric fiel; z hjnlp+oece63)pu7d 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elek .;h8mlr:,hhmh 7myz ctric field 6.0 cm from the center of the sh7h ;k m:8hhzmry,.ml phere?