State the law of conserv7x :n2jf9;l hbc ,j+w1sxe sdwation of electric charge.

  Is it possible for two negative charges to ac9x ao53msg+lz n:9 vf05gumqttract each other?

  Is it possible for a positive and a slwh/da(ke 5u 96dgri ,q-ey2 negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Duringtwmo tf.s33;,yqu /zh the process the glass rod acquires a posit tomfy 3qs. ,;/3zwthuive charge and the silk

  A proton carries a

  The model of the atom shows a uiyy3l 7li*.j

  A neutral atom always has: mwkeat5v4g/t f9i5j

  An atom has more electdg ,qd*yo-j1 wrons than protons. The atom is

  Materials in which tn 85k k5joznjne:366pfdwha p5p :e5vhe electrons are bound very tightly to the nuclei are referred to phne5dofn a:63 5:z6 ppvwjen5k8kj5 as

  Materials in which the electrons are bound vd1x5nhqr ;k av:x0zuc 6,v l3qery loosely to the nuclei and can move about freely within the material are referred d6r 1vxnz;kqlh: 50ucva3q, xto as

  A negatively charged rod is brought near one end of an unchargedpfwxx8q 2 lo;6 metal bar. The end of th wq;xp2x68o lfe metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, qn1u lsqccv ytw28q(47b 1q :cand sphere B is neutral. They are placed near each other on an insulated table1s2q :wbtquvcn4y(lcc 8 17qq. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivel)7 hgsi dt;9kx45r i mh35ooh4)+b o mvtrgcs4y?

  An originally neutral electroscope is briefly touie-ho-dm1t7aa qs,7 rched with a positively charged glass rod. q7--oama d7hir te ,1sThe electroscope

  An originally neutral electroscope is grounded briefly while a positively oidptwe;a ,.2x;/w nw charged glass rod is held near it. After thei/ ta,d 2;xwpo;we.wn glass rod is removed, the electroscope

  A positive object touches a neut--2ub7 g fc:rro/vt6d;c rabzral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What hacgor-ur2 fa:b6b z7rd-/ tvc;ppens to the leaves?

  A large negatively charged object is placed on an insulated table. A neux 7)i8r9dem va-5 e9eocxm5w1kr) yfztral metallic ball rolls straight toward the object, but stops before it touch5va)8ykrxix5ez9mof9 mc 7w)1e -r e des 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 of6g( iiozt, m7y the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separa8rltj8n2a ud e:o/v td.ug*/gbc3bo+e3ps1 vted by a distance d. The first charge is larger in magniub3 88e*dot/1jogpv:sbd/ re . u+nvltga3c2tude than the second charge.

  Sphere A carries a nmm3 )mz vb..8h,zxztj et charge and sphere B is neutral. They are placed near each other on an insulat.vm) 8z.mz j3ht, bzxmed table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other withzxsd0dxyx 731 a certain force. If the charges on both objects are doubled with no change in separation, the force between t7s3 0yxd dz1xxhem

  Two charges are separated by a distance d and exert mutual attractizy.up;f en 2122lcz ytve forces of F on each other. If the charges are separated byf. l 2e1yyzt2 u;nzp2c a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the-n9 (xnxlg to) 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 originaox 9l(- ntxgn)l value? The force is now equal to

  An electron and a proton are separated by a ns wyyaip: 1k,.ze:-mdistance of 1.0 m. What happens to the magnitu:ms ,.z :k-apenwyi y1de of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hehjlb+(3 g r5tappens to the magnitude of the force on the first electron if a second electreg+t3h5r ( bljon is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. vfv4 lq2t-zti6i54hbgzir s 6a 7 w/2iWhat happens to the size of the force on the proton if the electron is moved 0.50 m closer to the proqf vi2tvslr45/ht 6ig4 7b2-z6zaiiwton?

  A point charge of +Q is placeduny 1pn/*qc.ntv .sxju v1/:a 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 squsx:p .n/uqy.t avnj cun1*v1/are?

  A point charge of +Q is pljvw u84w1rb/ raced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangl1 rrwbu /4wvj8e'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 vector3wwrleukg3 :o8.rbv z8dn 4)h?

  At twice the distance from a point n0t,hgi n 5q ior+9gg3we ypyb52;*fg charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negatizgdch 9 )ec,(jve and positive charge along the line joining the two cj9ze)gdh, cc (harges?

  Is it possible to have a zero electric field value between two positivt.ldo8 r vde1*e charges along the line joining the two charod vd18 .*lrteges?

  Electric field lines near psi2jn2n ki /fqz2tive point charges

  The electric field showugjx+(q 3a kr1n

  Can electric field lines interseci ) e5pw,ds6 kl+d0jgav21 wyit in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniformspoh6pif 6 *9/ tkcty; electric field. Give a statement concerning the electric field ko6ftiyp9st; h /6c*pin the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters ar4yit9q e zajn4i *x7 shc1:bf5e each given the same charge, the electric field (E) midway between the center and the sur7 he1:i q9y54fsxztb4 j*cinaface is

  A cubic block of alus2 ,/1im8yroaq. bps yov h9o3minum rests on a wooden table in a region where a uniform electric field is directedyo yvbrha i2 mqo8,s3po/s9.1 straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrost p ,7f(vftt.gaatic equilibrium near an electric charge

  A positive point charge iu4djp ;4 vr spxz:dh-h*gt*7 ls enclosed in a hollow metallic sphere that is grounded. As *pj - vzdsu*xh7tphd4;l 4g r:compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertik3 2f1:rdwlj:y hmu/ des of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electro-aqpzd./q jizmrq, )(n 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 haqusiw /bpn - s1+g4f49n2av s fviyx,zzl7m.1 s a net charge of +2.00 mC. How many more protons than electrons does this piece of plam.n syw u4f4szi11-l7vg qnfxz p+2 9/ab,isvstic have?

  What is the charge on 1 kg of y vksyg;guhak 1d*)- 0r4 + ,pjczqne3protons?

  An atomic nucleus has a charge oe) z3v/w(y2t lfm+nfkf $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, seypwp 7;3wr+vo0w/u caparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What iwpaur0pc+oyw v;/ 7w3s the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 Noq6-tt37grqvc 7t h q). What is ththqt73v7c-qo6grq)t e magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far a0op.u p+9 7getf vx0cnpart are they?

  The force between a a-cysj)w -y8 ei/zry7$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initia +/8bvs4vzrjg lly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what ivrvsbgjz+ /48 s the electric force between them?

  Three identical point charges of 2.0 mC are placed on 3q.jd8z hbr-a/ wyp 4g edy34rthe x-axis. The first charge is at the origin, the second to the right at x = 50 cm, drgrb3jd4 pyqzy.48 - wa/he3and 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-pq g9zsyyeo8q * 6er19axis. 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 6 qgy9 eoqypzs9*8e1 r100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are loxu7ky 6tc5fe/lbl * +hcated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC ax flb6 l*e+5yu kc/7htt 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 sedm9 h v/.uwg) 3b mt3jkt.6vfhcond point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts ontvm)hdgh 6u /vb fjw39.m.tk3 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 (0.67 o64drtrzcr 30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of thetz 4 orcrr667d net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is aty wyl6+ ;k7ithc plx71 (0, 0). What is the p yt +61l77kxilcyw;hdirection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of a r/idy sdz8*bfw igc0j5ga.0.n equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts .r/* 0asdgwid.g5jcy z i8 bf0on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. Atk9myw a53u za( what point, on a line between the two charges, would it be possible to place a charge of -Q such that (5 y9w3kmaz uathe electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a frlp1*e.ah3/sra-f 9heey(t+9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be *h/ r9a.rtyaee3-pfhle sf(1 placed so the net force on it is zero?

  Charge +2q is placed at the origin anw+wy8l-4 syqpi 0f/ (0dnfokld charge -q is placed at x = 2a. Where can a third positive charge +q be sfq8+k(oy w0pd ilw/4nf0y -l placed so that the force on it is zero?

  A copper penny has a masbfx l* bwv9+9is 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 againsrkd75w; wd-wq t the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the prowwwd7 k-5;rqdton?

  Two 0.20-g metal spheres are hung from a common poin9p /1o gpptaa)t by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle beta9)1tp /gpapoween the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What ivaq rs. ,o2 x9 4m(xbckj3gql6s the magnitude of the electric field at a 6.jqbq,3xvlxr g 2s94 a(ocmkdistance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electrpw)7+,yvupv )o+:u)4 k lrs hh ,ndhjwic field at a distance of 1.50 m from a 50.0-nC cw +uh)yhldvvs)rkp n,uho jw+,74) :pharge?

  A 5.0-C charge is 10 m from a small test charge. What is lreqi /lkuadsb9/e,l -7 *it, the magnitude of the electric field at the / / lt ,beeid* as9q7kl,ru-lilocation of the test charge?

  A 5.0-C charge is 10 m f c9 uf u(-idaup72h*yfrom a small test charge. What is the direction of the electr7-uup 9ufcf id(2*hayic field?

  A 5.0-C charge is 10 m from a small test c; 53dw jrt;ezdd9c)q fharge. What is the magnitude of the force experiencedftjd ;wqz ddc;e593) r by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C k*8cp69j,azh bgn o 3;3hv;, nmxwm diand are separated by a distance of 4.0 m. What is t;vc8go3;w*6px3ahm 9 n,nijz m dbkh, he electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the)n 4.n0l38n gylr nazgsx ;us) 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field ax nsgng3z.l s r08nn4a)u)yl ;t the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter v1kk/fj, yq, b( vf1arstick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joink qrj1/av ,k(y,vfb 1fing the two charges is the electric field zero?

  Two point charges of +3.0dn-71.s8pwy ptch0bg mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnituds wpgcp8ht01d7b-n.y e of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squars 6f38 h p3m6uak2ombre of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find3a rfhoum3 62kms6 p8b the electric field at the center of the square.

  Consider a square which is 1.0 mao2eqzqpg n- 6j,eoi 7l)af8 , 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 ez6oon 2jfa i -8 paq,)7el,gqmagnitude of the electric field at the square's center?

  A force of 10 N acts hj/fk+ )w:jenon a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of t+:jenj) fkw /hhis electric field?

  A particle with a charge of 4.0 ,+nnj:8n b zghmC 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 .e i xqamqa;3,field of 6000 N/C pointing downward. What charge must be .qqx3ia;e ma,placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carrhg mns j(o ls61/)+bxries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What ar n (+6/xghs1mjlb)sro e the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is thf54l(,jbbw)nar y k 6xe magnitude of the electrbjk4br ( 6wfn),5ayxl ic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm cae:tsvbp w rn33 ij4c(:rries a charge of 3.0 mC. What is the electric field 6.ep tvs3(:j ib3cw4:rn0 cm from the center of the sphere?