State the law of conservation of elec3ohboikh6um w2(u5 x 4tric charge.

  Is it possible for two negative hx0e)x pwjut*vr+4h wl59 ge7charges to attract each other?

  Is it possible for a positive apoanwo (ptczg.fc3x;a )8+0 gnd a negative charge to attract each other?

  A glass rod is rubbed t. )chb f8i7ga )n1niaa-npg.with a piece of silk. During the process the glass rod acquires a positive charge and the h.8n.)1 bii) gan7acat gfnp -silk

  A proton carries a

  The model of the atom y hu0e8*as32wuhl9wvo (pc 7zshows a

  A neutral atom always hayse y n. bdl+jw3eiz2+l z 2n3)dq5v+vmj6 a.rs

  An atom has more electrons than protons. The atbs ,r ei:.wj56r3r y fbr*zh(jom is

  Materials in which the electrons are bns.i f3 yay:)aound very tightly to the nuclei are referred to as ys3a )afi:.ny

  Materials in which the electrons are bound very loosely to thect bw )ngj jd31aww-6u-lx69f nuclei and can move about freely within the materx1l-ftbwgn)jc9 w d6 j 6a-3uwial are referred to as

  A negatively charged rod is brought near one end of an uac (*d9zo+fd 4j*hxe9u x6irn ncharged metal bar. The end of the metal*i4ddxfah x *cer +9(o6z9un j bar farthest from the charged rod will be charged

  Sphere A carries a net positi6r6qchh1 b7q (h jen 0vqb;adq4hj. 3yve 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 q 6j.h(qhr7; vyabjdn64ebhhq3q0c 1grounded. Which statement is correct?

  How can a negatively charg1,+ky yr8lxo bbjob 8da2 g6c9ed rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively ch)6s bo i) pl)1z a(qvkvr.s+;ogsph5x arged glass rod. The pavp isq+v.5)hx61 )s)bo ;o(lskz grelectroscope

  An originally neutral electroscope is grounded briefly while a positiva6zx h,st5 7wuely charged glass rod is held near it. After the glass rod is removed, the electrosca,7zsu5 6tw xhope

  A positive object touches a neutral electroscope,,ftr-ixh v.foy/s gs6+hr -.k and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What h/f6r+g-sy.k vofx -i t,.hrhs appens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral +: bzsldb,snv93xl6 y 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, anbl6dn+szy 3 9xl sb,v:d 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 co gyp y)c-fr o da4ngu0t/x ,gm-a367dvt ii94bnstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distancewc,yfnt ,xyo0 s)7yhq58y - nh d. The first charge is larger in maqy7tnfy05 )sx,ywo-8hyn,h cgnitude than the second charge.

  Sphere A carries a net cha gxi+j.8,o ffnpc u.xky,75 jxrge and sphere B is neutral. They are placed near each otxc xji,.,gpxj 8f7+kun5yfo. her on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other wiip:tif5,s.l qe-wo/q 5y1 pq8fui fe6th a certain force. If the charges on both objects are doubled with no change in separation, the force between/ qe o-qyiq1 5.p5 f6upef,8 w:filtis them

  Two charges are separated by a dii 2giq xniz3; / x5( xxt5ed.g(qplc6wstance d and exert mutual attractive forces of F on each other. If the charges are separated by a diq;6dg wx5(x g2nz3(/i.tcq xexi pi5 lstance of d/3, what are the new mutual forces?

  Two charged objects attract each other withqhe b.jyt.k: , 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 reducedbjh:yk q., te. to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of n yr98:gzu7 ob1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first elen :b8zo9y7ugrctron?

  An electron and a proton are separated by a distance g 3rwk c1.ma ehra 4)m.8szqk;of 1.0 m. What happens to the magnitude of th 1mqg.ae.w 3samrkc8k)rz;h 4e force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separate1e +2p k cfxn5+2kinhtd by a distance of 1.0 m. What happens to then +xft k2hp c+512enki size 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 c .gobo;g2 hs)/ lqd7cof 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 ot./o)q;l2cgos ghd 7bcher 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 ofv vm.5f ld+ kg/tq0tr7 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 charge of +Q placed at onet+qv7 vrgt f5/kmld0. of the other vertices?

  Which of the followin qo cck (13l2aon9jjqm.j,2 apg is not a vector?

  At twice the distance from a point charge, the strength of the elect:sigqe ps4u2i.*0mjo ric field

  Is it possible to have a zero et*tgt5 62eljx +5ey halectric field value between a negative and positive charge along the liy+t h6tjel2g 5t5x e*ane joining the two charges?

  Is it possible to have a zero electric field btcii0ymjg4-nr *2b5p 3gm7z value between two positive charges along the line joining ti *zypb3tgr5jbnm4 g 2i m7c-0he two charges?

  Electric field lines near psitilh8+. gab*brk ve point charges

  The electric field show do3,a8w:acyun

  Can electric field line5xiv1 t(ica0r4w/ffgic3 xn/s intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniforkn5,as(p x7( vy h3;q o2ygczsm electric field. Give a statement concerning the electric fzov2nc(, k a5p7s g;3shqyxy(ield in the block's interior.

  If a solid metal sphere and a hollow metal sphere ofcvup.+a m 6*rn equal diameters are each given tr mvu+n*6ca.p he same charge, the electric field (E) midway between the center and the surface is

  A cubic block of alumin* xkdkwk61s8q um rests on a wooden table in a region where a uniform electric field is dirswd*6q k8k1kxected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in elez:1pwy-20zdu 1m 3drd hu(o rri,j1 atctrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is glix-l*/nu3 9skh uo6i2;j ckjrounded. As compared to the case without the hollow oc/9; j 6kxhnuu-s 2 l*j3ilkisphere, the electric field at a point directly above the hollow sphere has

State three properties of cond a)gh*dg b-7oouctors in static equilibrium.

State Gauss's law.

  The charge carried bylz3)*m pr ,:t8 wpfphq 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 net charge of +2.00 mC. H1+mjubjp 0wc 3ceuav1rh/ k*.0q/ebeow many more protons than electron . +k*/0mcueper0ba1/ wc3vjbjuq 1e hs does this piece of plastic have?

  What is the charge on 1 kg o(mxb lyrj h 521/8ilbqf protons?

  An atomic nucleus has 03;inb mw,na pa 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, havac3 8v7yq0 wtu-et9 4r4w phave charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force bet8 a9y v aww ttq7ruchvep4034-ween them?

  A 1.0-C charge is 15 5m: g2)j xywj;kl3 cp2qk5nxim from a second charge, and the force between them is 1.0 N. What is thjxl32 x2pk5j:ymn;k5i) g qc we magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?h6o9iqx/fbgp(r*.imq m 34zx

  The force between a otx;0d/i my* xbrx*s6 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, in5 yzhi8ms,x*o-txd/1. kesou itially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between thekd oz8.shu i/5e1t* m-,oxxysm?

  Three identical point charges ov4i9w grvl gpo4 yn/17f 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. What are the magnitude and directipv1n49ygg/ orwli v74on of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-ao(mt(pq9g ea n1 ;ppdc8l1(6lgl g2ga xis. 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. 1 82;nq maoc(ag1(pgpdp 9tll6g( e lg What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following dw y0dkb/n*0n positions: Q1 = 2.00 mC at x = 1.00 m; ddb k*wn0yn0/ 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 u s ys/3t6a1heplaced 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 t ty1s su/3aeh6he 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 nC is at (0, 0.10 m); Q3 = 5.0 se/0ne sw8id:nC is at (0, 0). What is the magnew8:e0sd n/si itude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 yi d(ynt-/m5t g ++9shn9 ernxm, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whatg9r9(eh+imyny t5 nn+s/tx d- is the direction of the net force on the 5.0 nC charge?

  Three identical charges ok5g7 p 9pkv8: p0hpufef 3.0 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 which ak 9 uhgppe:587pv0fkpcts on any one of the charges?

  Consider point charges of +Q and +4Q c2(r 2o5 gcery-c0xef, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to r(o5 cge2f20 rccxey- place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin ano-7pctl:xq axv. x o(:3c3fhyd a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be op37:of ytclx a3( x.cxhqv-:placed so the net force on it is zero?

  Charge +2q is placed n4+wty ei4 j3b96zq sz mvs+n3at the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be plaswtqzsy +m+z 3vj94n643nbi eced so that the force on it is zero?

  A copper penny has a zbzu,do1ne1*t. s :8g hqg.n hmass of 3.0 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 o5l6+zf sb-gqv*jz vuir - z9(jf gravity by the attraction of a fixed proton some distance above it. How far above the electron is the qjjiv vz5ug-rf *z+l(s-z69b proton?

  Two 0.20-g metal spheres ar7 mtf 8w( rgj57uz8s z*7kcyece hung from a 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 s8e cz7 u7jc*8m(5rwkzyftg7 threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of the wl-pwp8ij-kj5t ;awu(/q;d q electric field at a distance of 1.0 m from the nucleuw-a; - w;w8jdtppj5 (iqqulk/ s?

  What are the magnitude and direction of the electr55l,*:b0 s) (rshw twhygfiyfic field at a distance of 1.50 m from a 50.05 :f)hg (y0i5sst ,y*lfwrw bh-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Wha+tmrhzg ;b 2/,o tmeh,t is the magnitude of the electric field at the location of theem,o h hzbr2+t;g,/ tm test charge?

  A 5.0-C charge is 10 m from a small t92 kks*dczf)k fp fvsce,p; )4est charge. What is the direction of the electric f 9v k2fk )d,c4);sp zfefsp*ckield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnituolw20ht) e.9q hnp ) mw1/t3wb p+xjqvde of the force experienced by a 1. q) hbp9otjmq+ewwx h2wp).0lt 1vn3/0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C anm9+xe rg8t6+u(fqx *fo11 h jsu,eo hyd are separated by a distance of 4.0 m. What is tt fryum6j u(1, sx1qx h9+ghofe 8*o+ehe electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mabu. 2jx.e2sqd 2 grrj*rk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. ujgs *br j2.er2xq 2d.What is the electric field at the 30 cm mark?

  A 5.0-mC charge is pl 7ytx:i3mi)zij /1asjaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mi:j37 zs)/ ijtm1i yxaark. 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 m. W;x(9lddm:o:m 5 o iqoohat isdodo( mo5oim l9q:x: ; the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are 5ixb aae2 ;z)cwqk5 n*at the three corners of a square of side 0.50 m. The last corner is occupxan zc)5qb*a;i 5we2kied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Chbn5qp.adi)d sm)f;j (v-crb 9arges 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). Wha.fm )sndvp)c ;-i bqda9rjb(5t is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a wqz3i).+h ab 6im eg9qcharge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of bqge3zqiw.)6ha i m+9this electric field?

  A particle with a charge of 4.pzk.j l ah5haetn7() )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 gim15xci2yvpy,7 z+ id is placed in an electric field of 6000 N/C pointing downward. What charge mxy5md+yii7p c 1i,zv2 ust 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. The ball is placeoui w c3b9**mnd inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and directioni*wmu o3 bnc9* of the electric field?

  A metal sphere of radius 10h0 vc4,c:hhzt cm carries a charge of +2.0 mC. What is the magnitude of thzhc0,chv4 :the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0m3iwfc -kbjb l.7a4 j) mC. What is the electric field 6.0 cm fromw cj734 )kfi.jlm bab- the center of the sphere?