State the law of conservatiodi d90 qi:9gc*m y4))jilvp5p goi6vsn of electric charge.

  Is it possible for two negative chargy2l 7y 67c6mrwd,gohres to attract each other?

  Is it possible for a positive and a negatim i v+ipvw5mj23zb) -jve charge to attract each other?

  A glass rod is rubbed with a piece of silk. Du1ptmo/+4e*;0*vgcy c ngge zmring the process the glass rod acquires a positive charge and thzneeopt;gyc mv*g+g1m */c 40e silk

  A proton carries a

  The model of the atom showrc9p 1 4ij k)22ivau gkezlp:8s a

  A neutral atom always:lt85ptcv0.gn*f6b 1j w czdh0-rtsa has

  An atom has more electrons than protons. The atom y iia(1+b.xt up tm/6ucvc (q6is

  Materials in which the electrons are bound very tightly to the +tphzr01 o:(ro ; p8flaraci( ;kz(dwnuclei are referred to acr izdrhk8:fapwz; ;tl0rp1o(o+( ( as

  Materials in which the .sr-t a s)p(a.dx47x x0let ckelectrons are bound very loosely to the nuclei and can move about freely within the material are referredct.ds x( .tp-e xkrx0 7las4a) to as

  A negatively charged rod is brought nearko i8aqpf2x98 r1dq /7xc l1zx one end of an uncharged metal bar. The end of the metal bar farthest froia o82xql 8qr9ck1 zd1/7 xpxfm the charged rod will be charged

  Sphere A carries a net positive charge, and spherkhgln)mif1 f8 m 5/knogk 798 ;pxse0ie B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched wig i5nk fg ln1kk o8sh9)/me0m7pix8f;th a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positive5xozb1kbg yfli/t e3qvo4 0-*j3sxi/ly?

  An originally neutral electroscope is briefly touched with dtu)n e8 p;e*fa positively charged glass rod. The electroscopn f te)ue*p8d;e

  An originally neutral electroscope is grounded briefly while a positivel,aox1 cez+9 *depi5x fy charged glass rod is held near i 5 pde+oac9f,e1x*x zit. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, alfljm9.1h n6ln 0ql:p nd the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happenllfplln n:hqjm1.960 s to the leaves?

  A large negatively charz 9fwd:wvqx) d(mr58(gz+el vged object 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 pate:rqvwx 5f( zd8dvgz ()+l9mw h 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 Col r gv3+)grkz+ulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge isim)uzb3-*k 8sd tvi j- larger in magnitude than 3 8 vzkj -d-tibu)mis*the second charge.

  Sphere A carries a net charge an2f l6aln9hq3ld sphere B is neutral. They are placed near each ol3a6n29lqhf l ther on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain knv*vf;chrq+9k ee -+b2ynk4 force. If the charges on both objects are doubled with no change in separation, the force b enykk9vq++echfb 2*4rvn; k-etween them

  Two charges are separated by a distance d and exe qd lhbe0a*ha4;)qf/y rt mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new 0al /ba*f)y e q;4hhqdmutual forces?

  Two charged objects attract each other wi +j(jyah4vo2sth 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 c2(ya +shjov 4jenters is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separ4 c+oieq3sxm7um , o.rated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second elec3sicxm4um r o .+,eq7otron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Wh qz*0lrpw;/oz at happens to the magnitude of the force on the first electron if a second erz *z0; lowp/qlectron is placed next to the proton?

  An electron and a proton are) mwfi a;yg;:by c)-gx separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer :yf)w g);i -b;yacgmx to the proton?

  A point charge of +Q is placed at the center of nv v y9lhs4kk0n.les6fp8z8; 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 cent. ;v vyls0n6psn84klf9 zeh8ker. 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 equilateral q/ 3ghzxbqd(ieg,5 z- qu6*sbtriangle. When a second charu gqx, zh-b(ge zbqds* i6/35qge 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 one of the other vertices?

  Which of the following isk,1b))r/ r48tw f **ebpadrbbfvqr:g not a vector?

  At twice the distance from a point charge, th,2zuha-h xednrzt3s) 2z o*9 de strength of the electric field

  Is it possible to have a zero electri( odimutm0x2)c field value between a negative and positive charge almit 0)2mdu x(oong the line joining the two charges?

  Is it possible to have a zero electric field value between th * nmg.53r iadm jqfoxb( 3t/mus/xmoh*r7+-wo positive charges along the( h/x7+u.mtg* xfqmsr5mn*ij/b h o3- rmaod3 line joining the two charges?

  Electric field lines near psitive point chargesv ,.yzy pb:d ;g;x)p 7v0mtpaf

  The electric field shoaa60, neb 9vnbwn

  Can electric field lines intersect in frwk lmt br o*wui79bun:vq-+,r7 ,jgo: ee space?

  A solid block of metal in electr ab7w;ao *sy*vostatic equilibrium is placed in a uniform electric field. Give a sa 7vbw;*s o*aytatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each g;kn (89)zwkzdil :dmliven the same charge, the electric field (E) midway between thnk9w:k8md l zlz;(id)e center and the surface is

  A cubic block of aluminum rests on a woodeey pwa63/hxhy*iwm9 kmi:31 rn table in a region where a uniform electric field is directed straight upward. W 9*wa6ikmrh p e/y3ix1wy3m: hhat can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equip)qyzlqxmy* 2 a/c-.clibrium near an electric charge

  A positive point charge is enclosed in a hollow metal*wii99q d0 q +aldlos2lic sphere that is grounded. As compared to the+d0 al qiqo2 ls99dwi* case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conmux;.+k:tp. ky r w1jpductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is 0lqwgu;4jicq8 zv( i*b 3i;tq$e = -1.6 \times 10^{-19} \; C$. 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. H+ k4,nfas/ynta4 d0 mfow many more protons than electrons does th,mnda+ t0nsf/ 4f k4yais piece of plastic have?

  What is the charge on 1 q0s1 c.4o6mxwammel xo+ a+c,kg of protons?

  An atomic nucleus has a chargezz.8.ux ueflfoz. a /3 of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, se3tykrrg s/, m4o5nt o2parated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betweto43 /tg,my k nor5rs2en them?

  A 1.0-C charge is 15 m from a second charge, and the force between thezjq0 j p ,g.+;.yej0r 6wc6try,h+aoeugl dl2m is 1.0 N. What is the marg,phyc;0 .e,6. +w 2jdglozyl0 qjr6 aj+uetgnitude of the second charge?

  Two 1.0-C charges have a forvt) xxp *szh0y)t.3m mce between them of 1.0 N. How far apart are they?

  The force between a m+wwkz0v8gi)mss)3 b$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2sg(8n 9 9tekuo.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, o9t9 k negs8(uwhat is the electric force between them?

  Three identical point charges of 2.0 mC are pla,bu ( lg:l5wtaced on the x-axis. The first charge is at the origin, thg ,tw(5:lulbae 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 the x-axis. A charge of +2.0 mC is,1o p5.-c +l +ljket wxvxr ,1vx-gkms 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 electrostatic force which act-pe 1lxvco,j5m+1r lt-v xs.g, k+wxks on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC.j27s k :apnho at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. Whaka. 2s nhjpo7:t 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 ijx;rfb5u)n * /fh x(da second point charge of -Q is placed at the up) *r(xjd; ufx fhn/ib5per-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 placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is ae 0 8sy(kbanzc sc6)ni.6- +l/knqluj t (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the ne(n-qsaek lb)/y +.n86ci 0zsjl un6c kt 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 =5v b7h,rsz u7e 5.0 nC is at (0, 0). What is the direb h5z v7sr,eu7ction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verticedd4zrm(n58vpu 76 vjps of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts onvdu4 6 758dpzj(vnm rp any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what pou9ch 5uj9/u6tt4w3fmi ql1rfint, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would beu3q69w f4 lh5j19tui/u fc trm zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Wher68ph 5kemrr3q cu 1xt1e on the x-axis can a third charge be placed so the nk rm1r8t ce1u36q5 hpxet force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wb g-zea9fka)0xtr m 36here can a third positive charge +q be place-tagme3z bfa )0xr69k d so that the force on it is zero?

  A copper penny has a mass of 3.0 g. y1fli hja259b u0a osk5b30hn 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 the attractd.tu)q+c38v07kina r/znfw e ion of a fixed proton some distance above it. How far above the electron is the rn 7/zt3 wkev 8c)+qf.a0ndi uproton?

  Two 0.20-g metal spheres are hung from a common poin:ws5e:oy+s kk h bk7m92c;on qt by nonconducting threads which are 30 cm long. Both are given identical charges, and t:kke n2+k7cbshq: 5;swy oo m9he 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 char 92e :cjeskj9rge of +40e. What is the magnitude of the electric field at a distance of 1.0e: 9s92jcjrke m from the nucleus?

  What are the magnitude and direction of the electric field atx 0o ega0ac3 yoz- z*3c6bvd,s a distance of 1.50 m from agd,z3a6ac svxo3-o0 ycz 0b*e 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the mhp+8v:g9hs m vagnitude of the electric field at thsv :8m9p+h hgve location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. x lq)6,of-v de What is the direction of the el,l f q6)dvxe-oectric field?

  A 5.0-C charge is 10 m from a small test charge. What is rahl;;z o7itmzve ;a bt)g-ms/ ; f g7bo00*rzthe magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge? ;ezvtb-7o0s f/r;ba 7;gagm zrm0l*ti); hoz

  Two point charges each have a value of 3.0 C and are separated by a d2u zb 2ljt;yc1istance of 4.0 m. What iu21j ;2 tlcybzs the electric field at a point midway between the two charges?

  A 5.0-mC charge is plavga22b.s,l p mr3ryf ,ced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electrf2y 2 rslb.mp ,a3rvg,ic field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -42+oswn0q7fu4tnz+nnil)*e f .0 mC charge is platf *nzn0 f2)e7ws++4nqu on ilced at the 50 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 = 0.20 m. /la jmmm g6w.6What is the magnitude of the electric field at the point midway betwelm6gwm /m6a .jen them?

  Three 3.0 mC charges are at them j2+lco 36zx.bua m.m d0sig1 three corners of a square of side 0.50 m. The last corner is o m a6+j ibmz.csd0 .m2lx3oug1ccupied 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. Charges are placed at the+ c5nmq+r+tgeay)/tu 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). Whagn /qu+am c+et+y)t r5t is the magnitude 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 placed in a uniformgza 3 nuvz6 td +2 )/a5qnyc/-mazr5yn electric field. What is the magnitude of u+atcn3z/z/)y6ad5-q zvma r nn2yg5 this electric field?

  A particle with a charge of 4.0 mC hasxeba/l2z)i hlq:5 :svg7cv7w 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 of 60008* b-g/ fmzpnu N/C pointing downward. What charge must be placed on the ball for it to be su/gnu*mbfp- 8 zspended?

  A foam ball of mass 0.150 g carries a chargen2zm.qk du*j-w gh ;o3 of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended agu-2w*mzo;k qdhgn. 3jainst 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 +2.0 mC5b omaqf(wxm7, lwkfw6nj- 8a + m8-zx. What is the magnitude of the electric field 5.0 cm from the sphere's surfaqf(z-n x8b+ma w7wxjm8kf5,low- 6mace?

  A metal sphere of radius 2.0 cm carries a charge of/h yckmi3lw5)5llz1o9vvhv) 3.0 mC. What is the electric field 6.0 cm from the m 59k1)ilhvlw hclv5oyvz)/ 3 center of the sphere?