State the law of conservation of electric charge.7wp9i k7uaqg**7u z+z *hkr vn

  Is it possible for two negative charges to +l9,q krkv3k vattract each other?

  Is it possible for a positive and a negative charg jew.q7urn w+:/st bz.e to attract each other?

  A glass rod is rubbed with a pieceh8zl :q- 7koos of silk. During the process the glass rod acquires a positive charge and the silohskz l7 q:-8ok

  A proton carries a

  The model of the atom sld7d41uec mw,hows a

  A neutral atom always has.e6fp sc5hj y;(esf w+

  An atom has more eleccj5-u0av6r xb b+m 7gomx6y d/trons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuod(8ym27el.p fv ttb- clei are referred to aoyp-72 blfm (dte.8vts

  Materials in which the elzv-,4jln -jwkectrons are bound very loosely to the nuclei and can move about freely within the material an-vlj j,4kw z-re referred to as

  A negatively charged rod is brought near one end of an uncw8d1 a0dp7, jzp,nkheharged metal bar. The end of the n1e,k 8hp w,zddja0p7metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are bwzp +mb5dxb9.2h. gtplaced near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Whic5gpd.t z+bh29x .m bbwh statement is correct?

  How can a negatively charged rod charge a+k+ll(edd7gtx oke vc2 s9) ,vn electroscope positively?

  An originally neutral electroscope is brie9rnwc9d otb3)zn2ydk3hb 6c ,fly touched with a positively charged glass rod. The electrr6h d3,nc3zd) 92obwkb ctyn9 oscope

  An originally neutral electroscope is b 2zpjgn.0;f/hm8so p2(edo fgrounded briefly while a positively charged glass rod is held near it. After the glass rod is rbfd pegm f/2h(pjo; 8 on2.0szemoved, the electroscope

  A positive object touches a neutral electroscope, and the leav93y72 frfw jgq1s9pp pes separate. Then a negative object is brought near the electroscope, but does not touch it. What happf91rjg7 yp 29sqfp 3pwens to the leaves?

  A large negatively charged object n7b pd+a27dgp is placed on an insulated table. A neutral metallic ball rolls straight towardp7 n7g+2 dpbad 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 each ball?

  Charge is

  What are the units of the Coulomb consta/4l6o-ygj7xf cqy 3d 4cowy-int $k$, which appears in Coulomb's law?

  Two charged objects are separated by9xoj2h:(0i y8z dx lrr a distance d. The first charge is larger in maz 2 x:rrixyh(j0 8dol9gnitude than the second charge.

  Sphere A carries a net charge and snxt7 gwiy6 ,ti*aqxjx3v+j26 phere B is neutral. They are placed near each other y2w x,jtx q6ti37xivj6*nga +on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges on o1oiuy.by03dl9 dc:de -/ds e both objects are doubled with no change in separaeyd: 3d u0.c9 do/sbido 1ly-etion, the force between them

  Two charges are separated by a distance d an1f pnlnt 1j-:jd exert mutual attractive forces of F on each other. If the charges are separated by a fn1n-pj :1 jltdistance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the fora1vqbseb9w3 3ce between them if one charge is doubled, the o e13s9qb wavb3ther 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 du87as55nw bur q +g3hzistance of 1.0 m. What happens to the magnitude of the force on the protorn b+q35gusw uz758ahn if a second electron is placed next to the first electron?

  An electron and a proton artg6n d93ylccv2e66y.fbhg fo 9 rl40 ve separated by a distance of 1.0 m. What happens to the magnitude of the force on the first e9y vdc0f4h 6 .ly6bl2ng 6ctv rf93goelectron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What hamfn) ,qq.6zkzhtd, *appens to the size of the force on the proton if the electron is moved 0.50 m closer to the proton )zf,nz*,hqt .d amqk6?

  A point charge of +Q is placed at the center of a squargc9a p .-wu09kap wy3fe. 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 cowcaakuf9 0-g3p wpy.9 rners 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 nc ker* :8vg2sis placed 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 ksc vn:8g*er2 a third charge of +Q placed at one of the other vertices?

  Which of the following is not/, y7grmkz +18h uc 3gyqozz:x a vector?

  At twice the distance from a point charge, the strength otip(g; 55ldb of the electric field

  Is it possible to have a zero electric fie ; bvupjo0:f.ald value between a negative and positive charge along the line joining th o:pvau.0jf; be two charges?

  Is it possible to have a zero electr4i;iq;f t qa-jngo,e r5ur) 3kic field value between two positive charges along t,oqainue;r4 jk -q)t i3;f5grhe line joining the two charges?

  Electric field lines near psitive point charges 4xuq*ad nny61

  The electric field shownxyv5 o53ey0u1t*u*+g/cfre i, xldsz

  Can electric field lines intersect in free space.66 x/ jyeky :nmd8lyld -a9lp?

  A solid block of metal in electrostatic equilibrium is placed fjfakt7 9 *a-bin a uniform electric field. Give a statement concerning the electric field in the block's interiortf*bj7k9a f a-.

  If a solid metal sphere and a hollow metaaq i)t 4ye9z ym/b--pql sphere of equal diameters are each given the s-tzqe/pm yi-9) y abq4ame charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region 2h xuhutl5z5o; p64 inwhere a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfhx245o uu; 6p5hiz ntlace?

  If a conductor is in electrostatic equilibrium near an em:s;hyfx,y 2 +s4wrxk lectric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groull4ieu lx 2 8pj+n(w,spsr,h*nded. As compared to the case without the hollow sphere, theeh ,i *psx url2(jpl8+ 4w,nsl electric field at a point directly above the hollow sphere has

State three properties-e-uw1av g7(q. kbit:g44j6 bmkp rfnd 9dw3m of conductors in static equilibrium.

State Gauss's law.

  The charge carried by oae v 4s4t-go)3.pioygne 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 nevmmts6 7ko5)jcbe kio, 3c87tet9/nst charge of +2.00 mC. How many more protons than electrons does this piece of in e, o3jtt6k87mmbetvsc7 95s )kco/ plastic have?

  What is the charge on 1 kg /6i6 -f*6zws1pwj cxpj zpto8of protons?

  An atomic nucleus has a cha (it+j1/t9uo9v nv psna q+a0bpks/oo2( 7laa rge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1wznt7a e9 ri(;.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is(9a;wzn7rie t the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betweeyn rqn1(1.m -hzdn4nxn them is 1.0 N. What is the magxm. 1(4nrn h1nq-d ynznitude of the second charge?

  Two 1.0-C charges have a force between td9z 4wy ssny6)hem of 1.0 N. How far apart are they?

  The force between a xg.-,di wdl e9 ,pr gbi56y5dm$30 \; mC$ 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 forceo7a *w*w; dx(t62az5tv u itkv. If they are moved to a n; *to (x5iu 7ww2z6t*taadvvk ew separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. k z9o 6gbjz8f 8e1eqp0The 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 dkej8ozf 8z b6qe pg019irection of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is pla. x39ip/tq4trnaay50cm-h l4h574 wge qyk r yced 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 electrostatic force which acts on the charge atc4 04y5a /xw g-ka r5qtp h7el4.nm9irt3yhyq the origin?

  Three point charges are located at the following posiail 3w6r,h5+ qd ovyy5ga(9+e y 3ogfltions: 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 magni a35gi+fdq,o3v a+elyo y659 g(yrh wltude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, :8 e7wx 5ykhhpsll4j7 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 45lpyl whes: 78kxh7 jforce 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 (0n e j-ghbozj3w17d00 a.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, ebdh o30zjgw 0-17ajn0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2r 2vh--al yy x4 ci)h9vb6uph4 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charv2b)4la4h9 x ucvphi- h r6y-yge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilater+ns5c kerks8u g72gp9al triangle which measures 30 cm on a side. What is the magnitude of the electrosta psgkr28+u7 ksg5en c9tic force which acts on any one of the charges?

  Consider point charges of +Q and +8t-bt p0dew n1e0 t4/ dm(z e7;j4tqtdjm5ijp4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be poss8etd tbp -zm1de045q j;i 7/m wtjdjet4tnp0(ible to 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 and a +9.0-C cha+ t31ehmw1, u/sgpq nbdyv57rrge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force onwybt1ud,3+7 r5h mvgn/p s 1eq it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where c;g,wwtbg fmy u8v3/08vb6ln p2i d2 wwan a third poubgwgf3td/;yn v0 2p2w w8,vl6mb8w isitive charge +q be placed so that the force on it is zero?

  A copper penny has akc-6n-n(n0m bb8 wzwd mass 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 f i,dhc oc- 3:ygt2ly xcurs:/8orce of gravity by the attraction of a fixed proton some distance aboc/,i :d:lgh2t-xcoyu83sy r c ve it. How far above the electron is the proton?

  Two 0.20-g metal spheres ar:2 opbs:.jew: bfs0 k:a 7dx gea;sif8e 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 betwejd7:eb:w::fs 8b .g0f s;pskax 2aieo en the 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 elect/m ))d9fuu;oz4v5 lfc. z ffkc8*fhivric fi/z9 8fzo cmcfkh)uui)fv f;4v *dl.f5 eld at a distance of 1.0 m from the nucleus?

  What are the magnitude an by 0qy nrm*5*c3nod6pniv7hj4y)ti*d direction of the electric field at a distance of 1.50 m from a 50.0-nd nb)*i * j*3itrn7q60yvy nymh5c4opC charge?

  A 5.0-C charge is 10 m from a small test cha+, * bl9h fitx b+ljeaak/puph8w--l ,rge. What is the magnitude of the electric field at the location of the test charu,f8bl-h9*bj-ikll apw t/ ahx++,epge?

  A 5.0-C charge is 10 m 5bw xvaud4z;i*-26djv vx6 nnfrom a small test charge. What is the direction of the electric field?5d axdinv * 24 bnwj-;v6v6zxu

  A 5.0-C charge is 10 m from a small test charge. What is the mag(/gk c- mi:zkae5,r8s;n swgyyv30o unitude of the force experienced by a 1.0 nC charge pla nak y03-mro(;sgvg,s :5yc/8wuike zced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a -y :v:z5eg n zes+7kve1ps(jrdistance of 4.0 m. What is the electr5vs+v:ye( j:7psge -z ner 1kzic field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a metb0jpwk gvik tn962wzb9u, h241w3 dvter stick and a -4.0 mC charge t2itwdkb912wp,z 0vj3g6n bkw huv 49is placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm flmp is1 a22j71o4bdk mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line k2olab 1si4dfm7jp 12 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 l1 r d2nb u5pk3l:c bbsq:y/g(m+3oji= 0.20 m. What is the magnitude of the electric:2kug+lq3oylbb(c5 s: m jindb3/pr1 field at the point midway between them?

  Three 3.0 mC charges are at the three coc *mmk6fukf/ia9 f*(urners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the sm*/a6 fu kcfu(i *km9fquare.

  Consider a square which is o0ai o7l (xrn,1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0(i7xa,r lono0 ); +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 chargemi/ofs8 w6 .ml of 5.0 mC when it is placed in a uniform electric field. What is the mamm f 8o.w6l/signitude of this electric field?

  A particle with a charge of; *2mihr2, jk24yygl4 zhycok* fpdg5 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 uk,qw 15oh 12d bx*jfu.1dqm selectric field of 6000 N/C pointing downward. What chadb * fs,juqu1qwh 1. d25mxo1krge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g a 4,s4t9gwi1p fqoklt*-y/ekcarries 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 the magnitude and direction of the electric f o ,q19it f4*kw-gtleyksap/ 4ield?

  A metal sphere of radius 10 cm carries anumde+ :l; x+vfq4zh7 charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the ;7hvez +xmqn4 uf :dl+sphere's surface?

  A metal sphere of radiusr1 b35:v)toymzxj s ;m 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm fr:ysz)5 v3; omt 1jmxbrom the center of the sphere?