State the law of conswhg *pq dpyv7bp8jh*y9d; r r:rna )00ervation of electric charge.

  Is it possible for twd 8c3yh3 0ie7 x len+77jtaddmo negative charges to attract each other?

  Is it possible for a positive andu :nr; 9ujgo2g a negative charge to attract each other?

  A glass rod is rubbed with a piece of siljtppa o5 st(-h, e,k0tk. During the process the glass rod acquires a positive c,st5e0o ph pj(att k-,harge and the silk

  A proton carries a

  The model of the atom show mt xc(- ce:1.5czykdps a

  A neutral atom always hpq9qmk/7- u lsas

  An atom has more electrons than protons. The atom ev j5q9g*9icy ed- h-/)-3ysunq awwuis

  Materials in which the electrons are bound very tighhhev::k ykd1pwzr6 /btm: el*5 t1f+m:t : szltly to the nuclei are referred::: z6rfhht*kme s/ezl+b5yd : pwlk: tmvt11 to as

  Materials in which the electrons are bound very l7 eo7c9ecdcbv)iq1o 2 oosely to the nuclei and can move about freely within the materi 1c q)o oe7279edcbivcal are referred to as

  A negatively charged rod is brought near one end of an un5aq )-mnhbsts 1/r5 lecharged metal bar. The end of the metal bar farthest from the chargee -5sqsanb/mr tlh5 1)d rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are itp);3,ae w znplaced near each other on an insulated table. Sphere B is briefly touched with a3t,)aznw;i ep wire that is grounded. Which statement is correct?

  How can a negatively charged rod x0+5m2-unp vo xunn)ucharge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positiv.r pm 08.amohtoswk9r.t u8z4ely charged glass rod. The e.m8 makou9os0 .w8 thrr tzp.4lectroscope

  An originally neutral electroscope is grounded briefly while a positizuj es:wi0y,b8b )1 :h 0nytsbvely charged glass rod is held near it. After the glass rod iszb ubiy,hes0 nt:j8 y1bs w0): removed, the electroscope

  A positive object touches a neutral electro0m .v-- mas iyt2mr19e5hen mix;qs1tscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves1e.rxm;9t-15m 2heavm - 0 ssmnqt yii?

  A large negatively charged object is placedgytvcp ,p9h;c 0hnm;9 ;*ff pz 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 0 phypf9m ,*f v9;;gthn;c pzcdoes 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 constant br).jvd3 ou5 :tamk+s9 km;gd $k$, which appears in Coulomb's law?

  Two charged objects are separated 49.qe1d qt ,bgejx z3m5i,ki xby a distance d. The first charge is larger in magnitude than the second chargtie ig zj.ek,qq5xx,d b49m31e.

  Sphere A carries a net charge and sphere B is neutral. They are placgwa my*(s 4tm9 jizb;8:* fkrbed near each other on an insulated table. Which statement best describes the 4s rt8:w(ya;bim9m*fjb*gz k electrostatic force between them?

  Two charged objects attract :k s2s:la 2tl 2-xi-ohmvs degr, 6cd)each other with a certain force. If the charges on both objects are doubx)l m,rhc-- svd tdk2o :2aligs2e6s:led with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual.uv l ,)rouit; attractive forces of F on each other. If the charges are separated by a distance of d/3, w i,ut volu;r).hat are the new mutual forces?

  Two charged objects attract each other with a force F. oiftq is4g0z 1,g :0lt0phha* 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 reduc*i1 aog zil,q: h4ts fh0p0tg0ed to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. Whad1*1)ix9 1a v 3nqaqk/xc oxs0 iqh:sat happens to the magnitude of the9av1cik onxq*qss xx0qa)d1/ 1a3i h: 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 happensc,b+;j;ta 1d q)n tggi to the magnitude of the force on the first electron iq jt+iatn;g;, )1gbcdf a second electron is placed next to the proton?

  An electron and a proton are separated by 0.)uddwldd 7a a distance of 1.0 m. What happens to the size of the force on the proton if0. d) ld7dadwu the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. dob i208j,wqp 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 positi obd8p0qjw2, ive 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 equilateral tr-;fyckzb) p7:xbiv t/iangle. 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 b:yz7k/cpt b);i xfv- third charge of +Q placed at one of the other vertices?

  Which of the following is not a-ogu j0dr)y.dl; 2javb 76hhv vector?

  At twice the distance from a pointxv2 s6tc.uj:z5asc -e charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and pm2a 1x1uyfv zv7.7i4cr(p rqfositive charr.vx2m4iu1 77 1(qv rfzycapf ge along the line joining the two charges?

  Is it possible to have a zero electric field value b1g *mi2j/ c,f)bteoc5uka* nyetween two positive charges along ,)m t*u 5jife yccon/ka* g1b2the line joining the two charges?

  Electric field lines near psitiv/h;cvj;kk m y0q a6.pre point charges

  The electric field shu:iyjc w 8c7-down

  Can electric field lines intermdw dw5n(;g p+sect in free space?

  A solid block of metal in electrostatic equilibrium w *u.-c1vbvj l-ex:u mis placed in a uniform electric field. Give a statement concerning the electr:.lvjv uwu*e-1x c b-mic field in the block's interior.

  If a solid metal sphere and a hollow pphjd80rwmyc od c9( .h:i5 2bmetal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surfacidmc:250. pwbdp9 jr ocyh (8he is

  A cubic block of aluminum rests 39re cmh xfi:/on a wooden table in a region where a uniform electric field is directefr9/ce:x m3 ihd straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electb;pncfskbb)m;4h5c 9 7,u 8rdfvl :mcrostatic equilibrium near an electric charge

  A positive point charge is e0elhc;r m z0lf5ah1tlx9)p/ h nclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point x5/at )mzl0 ll;fchhhp0 19er directly above the hollow sphere has

State three properties of;fv (hj/ xqrf8 conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is m 3sq/(1kmgl pncrs3 e0t e9s9$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of w)7m9krm e ykdz.ojgkj...;v8ym7gu +2.00 mC. How many more protons than electrons does this piece of plasti. 9 7. .e8yzmvgukwm jgjkd.o7ym);krc have?

  What is the charge on 1 kg of protonke p +kpgh67jdxk10 b6):giy 1r7df cnt+2qios?

  An atomic nucleus has a ch/uspbg lt0) +xarge 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 cha zftg-)m8x.5vyron , rrge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between ther-,)xv t 5g. z8romnyfm?

  A 1.0-C charge is 15 m from a second rdyotf;c;) zx sis0 +93jv ek.charge, and the force between them is 1.0 N. What is the magnitu+v ic. 3;ex9;fr)jodystskz 0de of the second charge?

  Two 1.0-C charges have a force betw8e d keo4b( -4btvu3ug3kyk7 zeen them of 1.0 N. How far apart are they?

  The force between a (vp.y kx5.b m*qgge;a$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm8z :uj;k*omuvzongy 3 0p22yp apart, experience a 1.0-N force. If they are moved to a new separation of 8.o: py vzumz8j2yo k2nug*p;300 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placedaj* *(,ug-s ljk7k riq on the x-axis. The first chargejr lq,g jaius*(k-*k7 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 direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are ,y(pa ex;yfi0placed on the 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 the 100 cm mark. ,pi; f0yxaye( 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 posa f:isog9 55ovkd ).umitions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00faomdo 9v. is5) uk5:g m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q i 2,;nfo8 1j/zn pom3auqofa:ns placed 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 centejoq 1on/zn,f mauf2n p8o;:3ar. 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 at (0, 0.10 m); Q3 = 5.-vuc3:+qz6ya y r q;oo0 nC is at (0, 0). What is th-+q36 y u;aoyv crzqo:e magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = - 0ghbt7ey9 6ay6 5-1iuzgyhwes wks;( 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 gyh;aghts kww b0eyy169 iz us(75 -6eon the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verfi8b3 ,l0re /ejt+yzm5g j7eltices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts8i+j0ze,g3e7yler 5j/fblt m on any one of the charges?

  Consider point charges of +Q and h8 jfcsbi8. /*y1pgts+4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q suchtyf*/g8is8j1bsch p . that the electrostatic force acting on 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. Where on js e b);m7hff.d81vk e+9as3ygn;p bothe x-axis can a third charge be placed s vngyp7oj;)a1 + m3e9.ehb 8kff db;sso the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x wd bxu 53zi .g8oopq0.= 2a. Where can a third positive charge +q be placed so tha5qxb dw8io z ug3o..p0t the force on it is zero?

  A copper penny has a mass of 3.0 x*i+:h cmjx/ 1+y 6vmsvkz vu3g. 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 attraction o ( w be;7f:tnc6dab.ekf a fixed proton some distance above it. How f fbe:(c;n we.ta7bdk6 ar above the electron is the proton?

  Two 0.20-g metal spheres are z qa(c:h/gjx+hung from a common point by nonconducting threads which are 30 cm long. +acx:g(qh / jzBoth are given identical charges, and the 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 charge of + d)2gw-bwe63 b onvc8u40e. What is the magnitude of the electric field atg8wb3o )2wu6nb c-d ve a distance of 1.0 m from the nucleus?

  What are the magnitude and directio8ila8 p/6jz*0jmu 3;odzc nmqn of the electric field at a distance of 1.50 m from a 50.0-nC 3mcznz ;j u6*p88adiqml0 /jo charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of tkkm2ns3z (*o jhe electric field at the location of the test c(*mjko3 k 2nszharge?

  A 5.0-C charge is 10 m fr6zep b s2.t7ddom a small test charge. What is the direction of the electric fi 7ze.dsb26 tpdeld?

  A 5.0-C charge is 10 m from a small test cha 8jbm-z0 be)mc99,b 4dhzasmv kj8r -srge. What is the magnitude of the fo 4sm8ec 8vmbk0d9jr,m ab) 9zh j--sbzrce experienced 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 and are snsu6mf0l6n( g eparated by a distance of 4.0 m. Whasn0ln(m6 gu 6ft is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a mo6a+ n rw7m*odw 2hs2meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the 2ham *ros6om+ nw7d w2electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a /6wl ,-kzntpnmeter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges 6t k/p ,wnnzl-is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are plhcej;14 8 voulaced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between thch4l ;1ve8jo uem?

  Three 3.0 mC charges are at the three corner1dtu8 1q 0wwb,hmc, ars of a square of side 0.50 m. The last corner 8h1 1mwucqtad0r b,w, is occupied 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 atzefkt9eo2 er20dy o5+ 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 magnitude of the2dr 5oztfk0yo92+ee e electric field at the square's center?

  A force of 10 N acts on a charge of 5)g-9tsks nzs2n 24q 9b x+fqgg.0 mC when it is placed in a uniform electric field. What 24 nbg k92tsx+ nszgq)gq-9fs is the magnitude of this electric field?

  A particle with a charge of 4.0 mC- ol(-(l lxd *e7hwitv 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. lt02c6 gmsxa(9,*oujf(vjtb/ kdlr field of 6000 N/C pointing downward. What charge must be placed on the ball for it(atgusf9 (clmv 2ol0/r6d . kjb,j*tx to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 t;i )(iqqw :bjd3/o hznC. The ball is placed insiib q;zq3(/jwih:od )tde a uniform electric field, 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 +2.0 mC. What is the magnitu w8noeazy 37fx.(p(ah0g. ez ode of the electric field 5.0 cm from the spzyx g.w .(efz p0hoa7a38noe(here's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 okhw h,0o)l 0e8kti* emC. What is the electric field 6.0 cm from the centewo* e,h)8 oktke00ih lr of the sphere?