State the law of conservae7 ta: kr r/h2vnnkct2b.-i:ftion of electric charge.

  Is it possible for two negative charges zxu76 f07uygy bz;5pk to attract each other?

  Is it possible for a positive and a negative charge to attract6j-u n5n6evp0qxhe 0lpefq1 / each other?

  A glass rod is rubbed with a piece of silk. During the process the glass roju+cjddccro 7u/6 m q,k63)xqd acquires a poskcujdcq uo /x3 6dq, 7cm6)rj+itive charge and the silk

  A proton carries a

  The model of the atobwk: 09(ezibiq0i 4jt m shows a

  A neutral atom always hafk5 tc0zyp7wd dn nsg/7q7(:-ax: wrls

  An atom has more electrons than protons9 vcntfd9sb v9;v5qus4i1ed9. The atom is

  Materials in which t:t,dayh-izvv 1 yw4a0he electrons are bound very tightly to the nuclei are referred to azhi ad:,a t0vy wy-41vs

  Materials in which the electrons are bound f:odz3a b7r1uiiq 7/g very loosely to the nuclei and can move about bua:r igizd31 f /77oqfreely within the material are referred to as

  A negatively charged rod is 3zeub k,1e 2 mveut5ye;5d5 pdbrought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be charge d2med1k uuee5e;b5pt 3y,z5vd

  Sphere A carries a net positive charge, and sphere B is neutral./h a ;q/qx6rdy*yt .su They are placed near each other on an ins xtr*shq;d./ uy/y6 aqulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope pos i6ynllso4 x/2smqnsu7:5xr. itively?

  An originally neutral electroscope is hwenha 9 /j;7cv: btp.briefly touched with a positively charged glass r7e/nc jvw.h9h p; :batod. The electroscope

  An originally neutral electroscopeime+tr7 cdrp)dhzi+/s( 1d5 of e07ga is grounded briefly while a positively charged glass rod is held near it. Ad c+o/fmsip71i)r+a 5dhree0gd(7t z fter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separateh8 -ouyi/*b .hi1 7n2qbmcal p. Then a negative objeo1y pa7lm*hhnq2 8/ cbu.-iibct is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulatedjb (;xf u c4gg5;/qu 8tcpchj7 table. A neutral metallic ball rolls strai j8;5fcpgu jt(/;qu xg bc4h7cght 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 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 conv +h7*w (2ff0(mg3i qfhzug lhstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charu jfez;,djjloh;+d 00 ge is larger in maddjfj +lz;oj0eh,0 u;gnitude than the second charge.

  Sphere A carries a n qv6 nq89p:jibet charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the j:n9 pbqqv 6i8electrostatic force between them?

  Two charged objects attract each other with a certain d zy3c. 7ft. qrw*p-gwforce. If the charges on both objects are doubled with no change in separation, the foq cy w*g3 -.pt.zw7rfdrce between them

  Two charges are separated by a distance d ang ,fsednigd1 3 n2t(g6d exert mutual attractive forces of F on each other. If the charges are separated by a distance of63 1dd 2gtgfi ,negsn( d/3, what are the new mutual forces?

  Two charged objects attract each other wif 9hm3eaz81ml th a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the 9h81 ealmfz3mseparation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a protona , /q3mz y)m1frq. h0.a/fe;ak9ptxi ebdbs5 are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the pfa a;k.e5 mbqmx , z3hfb/)t0qaeiyr/s19 .d first electron?

  An electron and a protong33 c.cb3bbn or 7iw3v are separated by a distance of 1.0 m. What happens to the magnitude of the force on the firbc.3o3 gn bc3v73 wbirst electron if a second electron is placed next to the proton?

  An electron and a proton are separvn nfsm d0pffo;-j/7-s.+ scxrzo2b +ated by a distance of 1.0 m. What happens to the size of v-z f mnsrs 2d0xs+pfo- /fb7 ;c+n.ojthe force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q i vnvyg z7r:jc/.7. wtya ;-:we1quzsv s placed at the center of a square. When a second point charge of -Q .zy:vuv7et 1zy;w7qr:/sa j .nv gw- cis 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 square?

  A point charge of +Q is placed at the centroid of an equilateral triangcer cl d0fh9g54+;s:a dr rqm9le. 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 one ofa:9+q rh9rgdr5l s m0dfc4c;e the other vertices?

  Which of the following is nd:7ps -r n.d/5v yoluaot a vector?

  At twice the distance from a point charge, the strength of tz:elfy2-p ht 4t. ev7jhe electric field

  Is it possible to have a zero electric field value betweenvz ha*u,ps7, q a negative and positive charge along the line joizus7v a,,hp q*ning the two charges?

  Is it possible to have a zero electric field valueaf i;fasj7+qy- /3 jeh between two positive charges along the line joining the two chasfqjy ea +/7ahjf i-;3rges?

  Electric field lines ne gy2ax ul7 rk:u3i2qts d:18 i/wi:wrcar psitive point charges

  The electric field s5-el8 c,d xnbkhown

  Can electric field lines inwc,1f)iggrg j6zu5*y tersect in free space?

  A solid block of metal in electrostatic txa*t.qp*oi 8 equilibrium is placed in a uniform electric fiel xtaip.qo8 **td. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equ5nw:9nc p)l,w0,oxtrh f nzr 2al diameters are each given the same charge, the electric field (E) midway between the cex r20nn )c:h5 w,,rtlfpzo9 wnnter and the surface is

  A cubic block of aluminum rests on a wooden table 8 :*am ajqxuu2rv)*fgin a region where a uniform electric field is directed straight upward. What *v *fx2mqjura8:)ua g can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric cha t+-7ea 1gaea-2vagblbwwi98 rge

  A positive point charge is enclosed in a hollo mh14z(an )17eq/hi9(m c ozfo*zutuvw metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric fieldu * h1zt4c(1z 9u)oo fh (qevmiam/7zn at a point directly above the hollow sphere has

State three properties of conductors in snec:,r kg; bz;tatic equilibrium.

State Gauss's law.

  The charge carried by one elkc*0ycp .n , hdtc,3hqectron 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. How many 929dt3 ka km-vhxb0ormore protons than electrons does this piece of 0d- 99hm2b tkok3arxv plastic have?

  What is the charge on 1 kg of pro1kn) xlht 8cs x (o2 giy3*hzdlb+b0:qtons?

  An atomic nucleus has a char:zfb6zc fuwge2:f/ m+ge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separate*cmrq.+3cvr bfo hx*7 npav h;jm7:-sd by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnib a-o:7ms .cn 3v*j;xh* fqrmpc7 +hvrtude of the electric force between them?

  A 1.0-C charge is 15 m from a second 65xe;bxw7nj; +dwarw charge, and the force between them is 1.0 N. What is the magnitwra w65b+enjwx;;d7x ude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are thenspjs- p;,d4e y?

  The force between a 1 341muwfm:id (ma tnc$30 \; mC$ 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 force.x b/tk*av- ubd 17t3ck If they are moved to a new separation of 8.0 cm, what is the electric force betvbk3b u7-dkxct a1 t/*ween them?

  Three identical point charges of 2.0 mC are placed on the x-ak+v 1b+ ,/ue89nkzkszst 1xxixis. The first charge is at the origin, the second to the right at x = 50 cmxtbuk + xe v9z n1k8/s+,kszi1, 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 exg,7k1ihl tx*: qq-e are placed 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. What are the magnitude and direction of the electrostat- *l t1ghkeq7exi ,:xqic force which acts on the charge at the origin?

  Three point charges are located at the following ponluoc 3h:0pz5. *d1b9xp ptg b* g-sqg(7twlssitions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1p :hbltgng * sp(7zqx3.0 wt1 ugp5*-csod9lb.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at jx:+t;6v7st zd. w;ad*i.jmruzd1p)u8u ti bthe 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 the center charge if a third charge of -Q is placed at the lower-left7a .;v)j6tpuzsdd1: d i.8 mbx;utt* wz uir+j corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 ;z(. qbl vv0kywwg x /oj6he5/nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on ;ol(zj6b/g qxvwky0w/e5h .v the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);i .( y5x6dnxat Q2 = -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 56yd5(tna.i xx .0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatezorva i)6i : *3jffaw8owr9sn.u48ll ral triangle which measures 30 cm on a side. What is the magnitude of t*a i a6wvj:o) n9iw .rlrf4zo8sulf38he electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. ho7 7s.bz7nm kAt what point, on a line between the two kn zh7mos. 7b7charges, would it be possible 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 charguzw 4-c 5z)myom 8j9cve is at x = 4.0 m. Where on the x-axis can a third charge be placed so v u48zzw) -cjco5mmy9 the net force on it is zero?

  Charge +2q is placed at the origin and charg(i0 :ad;svl lue -q is placed at x = 2a. Where can v:s(dl i;lua0a third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass o wy q+p3otq,ce 52-re3iqn0spf 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 b(bj 5:hj-r n9pwmgn+of gravity by the attraction of a fixed proton some distance above it. How far aw g hb-rb(pm+5nn9j :jbove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting tnx. /fm,fi6eu hreads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle bet/ e.6n,fmuf xiween the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. ro; *ai)a b/+rirac /)c q c5l7lkvu4cqn2s1nWhat is the magnitude of the electric field at a distance of 1.0 m from the nucl lucq ;a/i1 +*/aor rrn4l7))nc2qa5 bskcc vieus?

  What are the magnitude and direction of the electric field at a distalk yve e.8:1vdv z wc,k(m;2icnce of 1.50 m from a 50.0-nC ldek cw .v(8v1y,k 2z:ime ;vc charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofyk+uaq-l0i 4c uu g76axh+:wu the ele7-y+kuu lgi ua4uc 0x6qwa +:hctric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the ozx++ 3buh)e9k y*) ejw hd,hjdirection of the ele b +)oh yku)+hdh3 9x,jezwj*ectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofnhjbm gr0z6 9t+.j5ct the force experiencedm .9zgtht6nj5crjb+ 0 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 separah q8v((e4 blwyted by a distance of 4.0 m. What is the electric field at a point midway between the two charge(q( v byhl84wes?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC h) agb9s8 xbm a7xd.:hcharge is placed at the 50 cm mark. 9dx)xaga7h.: bbh m 8s What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a met:w3j1,a7 t-kfbxu f cmer stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric fawk3j xcmut1: f,-b7field zero?

  Two point charges of +3.0 mC and -7rl ( ;n,3jg-ljcfr/i5tg f.i l.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electrn-itj,gr. r (c f53ilj/ gfl;lic field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.,xwv *5wb9guhu6k: 1yji o+ pn50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of they:u6gwx ph*uwv+n,ko9b 1 j i5 square.

  Consider a square which is 1.0 m on a side. Charges are placed at theces *v8)yqhze zqf3-, 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 tzes-cy qqz,fh*v)3e8 he magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC bn*ddw 3z y (rkgatn)5,urqiu/ ;j:. ywhen it is placed in a uniform electric field. What is the magnitude of: 5y )3 ndi,azn.uyt(;grrb qdj*wk/u this electric field?

  A particle with a chargqjvyfrc- i*/e*l 2coam3 t1 f2e of 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 placehq 1)uhk)prq i03l-fd mae0b( d in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it )rfulhm-) 00(e31piqa qbk d hto be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball 0-ezv 3zav-myis placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and dirzev z--3vay0 mection of the electric field?

  A metal sphere of radius 10 cm carries 2c z0h *bokx+se z-8ysa charge of +2.0 mC. What is the magnitude of the electric-s xzo 0+z*y2b 8ekhsc field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a cwl) 6.lmozsc2nj-2kd xk*-;izn(g dq harge of 3.0 mC. What is the electric field 6.0 cm from the cendnwg;iz sc)klzk*2q6 2xlnj.om -d(-ter of the sphere?