State the law of conservationc 4/ oq)quh+6bgc aejo b2m2x.c,1gbk of electric charge.

  Is it possible for two negative charges to attract each tg3w gz(m3/)k;1baxycw+t sr other?

  Is it possible for a positive and a negative charge to attract each o)hjso+z20g rye)ig +v ther?

  A glass rod is rubbed with a n (asiya-gd66bguk) ;piece of silk. During the process the glass rod acquires a6 6 y)gu (sbdgn-aki;a positive charge and the silk

  A proton carries a

  The model of the atom :skzth1 y7 omhbk5: . tq 5dtlfo2).jzshows a

  A neutral atom always halbes zi/123ct s

  An atom has more electrons than d ;x 25 i5cpo2*jz acgg85fke1 h+zndcprotons. The atom is

  Materials in which the electrons ah8v* r;4muk dz62wieere bound very tightly to the nuclei are referred to ah 6im4; *evkdu8rzw2es

  Materials in which the electrons are bound very loosely to th- bkh /qdk-9fqe nuclei and can move about freely within the material kb-k9q qdh /-fare referred to as

  A negatively charged rod is brought near one end of an uncharged merl:( ,tgo9obmtal bar. The end of the metal bar farthest frogbm9or(l ,:otm the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are c q hmtslt x)+5,a8 i7oka16v:v8bpn dplaced near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Wh,mivv)dxaoa nq1kphs7c5 6t8bt 8 :l+ich statement is correct?

  How can a negatively charged rod charge an b r81js5 burf18bdpu5electroscope positively?

  An originally neutral electroscopruwv5 lr1u8a d co//.ie is briefly touched with a positively charged glass rov/udi8awu5rl1o .r/c d. The electroscope

  An originally neutral electroscope is grounded briefly wk l- axkz-+qv5k+f;f7bvn 8r rhile a positively charged glass rod is held near v7; z+ f k+x58rabvrk-kfn-qlit. After the glass rod is removed, the electroscope

  A positive object touches a neutral elec2z*kbmlg (3nde0(n m jtroscope, and the leaves separate. Then a negative object is br(nej 0l g*kz (m3dnmb2ought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neuv (bnejr(2fv gn) 5a52 fswwc/tral 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 does not touch the negative object. At no time does either ball touch the negative object. What is the final charge on)e2 b(5(cv jr5fasw2f gw/n vn each ball?

  Charge is

  What are the units of the Coulombdw g4q/*/mosk constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. T xbmnsz(7* y-b.;aefohe first charge is larger in mno*ba7mfy;(xe-z bs .agnitude than the second charge.

  Sphere A carries a net charge and sphere Bulq-qka3m7- .p zbynpx,.0eh is neutral. They are placed near each other on3q pq 7 ulxn0z,m.- kp.ybh-ea an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a 2+ltkgs ru -/yxsudzsi,( +a9certain force. If the charges on both objects are doubled with no change in separatty,9g2sas( xs+ +rdi/-kuu zlion, the force between them

  Two charges are separated bycn42bva i q 7hf6w d5shgt6y:5 a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distanceq5c7ntwfav 24y 5b6h6g di:sh of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What hv x;ua59y xz;6uym-jwm ea8 -wappens to the force between them if one charge is doubled, the other charge is tripled, and the separation diste;v-ayuyxx5j9m6;z - uam8wwance 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 distance of 1.0b:s-n+ rlsb /e m. What happens to the magnitude of the force on the proton if a second electron is placed next to th b:-b/ rsn+else first electron?

  An electron and a proton are separated by a distance of 1.0 m. W29bxvjd) xli 5hat happens to the magnitude of the force on the first electron if a second electron is placed nex il2v)xbx5 dj9t to the proton?

  An electron and a proton are separated by a distance of 1.0x.e )kmc+mnjj(-ms i. n6n;ky m. What happens to the sni en j.-;j(m) m6mcksyk x+n.ize of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the c6p8 gk vl(l0 qn5:e6a9tf.sx ux alsx8enter of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed tha6.0 l9aa p :(xxltfs85 6ue qgvx8lnskt 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 +Qa89akov rx+z sq32 k7y is placed at the centroid of an equilateral triangle. When a second charge of +Q is plaqas73yr ok 9 2x8zvka+ced 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 is not a vect p lh:3uo(v5feh)wub6 k2t- qjor?

  At twice the distance from a point charg.e pg2fw ;5.,nbjbmlbe, the strength of the electric field

  Is it possible to have a zero ele0e-ym8t1aad9ma,cn shwhpnu5(/ m4 l ctric field value between a negative and positive charge along the line joining the two 8 4m mche dwy0/(tmnana-l9us5,1h pa charges?

  Is it possible to have a zego)ft p.*je8 nro electric field value between two positive charges along the line joining the two ch tof8*g)pjn.earges?

  Electric field lines near psitive poins5vcs*s27shk)r*n iq t charges

  The electric field shownyos*: (k4gm*sruj8c y

  Can electric field lines intersect ind t6s9m3ph *z.6ebee h free space?

  A solid block of metal in electrostatic equilibrium is placed ias3;*t-kne e6 rqp xs(8*ebbf4 3f nyxn a uniform electric field. Give f nqrpbe8x3(f ekn4 eax- s3;6 *t*bysa statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of b tcxdin(n0* 0teu.j6equal diameters are each givc6*d( n b.0nit0et uxjen the same 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 where a unifoi9 r5r*x:8c lamon*fvrm electric field is directed straight upward. What can be said concerning the charge on the block's top s9ro*xr58niac: vm *flurface?

  If a conductor is inw :ae:6 -lnor w3s2qhs electrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gr1 f2j6dcam u6bfa)s g -k-0i4y9wbjtrounded. As cys b)fw4t62 md0j- 1-6gfi9rcaa bjkuompared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static e hk4o/apa+ju zye678rquilibrium.

State Gauss's law.

  The charge carried by u;z.1gn+ gfd pqq:+ybone 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 net charge of +2.00 mC. How man+oljtg;c(z0ill+j : s qp4,ree 7td b:y more protons than electrons does ts+0 l7 zjd: jl( bgco:eie,trq+;t4lphis piece of plastic have?

  What is the charge on 9s r/nkdo2z7 t1 kg of protons?

  An atomic nucleus has a ch;i 05r(a1gfz as3enjx/h7 ikx arge 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 charge values of 2a5//1s yuyk cr.0 and -4.0 mC, respectively. What is the magnitude of the electric force between themayrs/yc/k15 u ?

  A 1.0-C charge is 15 m from a second charge, and the force between1. o3xjg8gycz hs1;gjmive5: them is 1.0 N. xc vizs;j .5e31y:gmj 8ho gg1 What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apars7z) m 8cuvx3ot are they?

  The force between a u*tm /mo729jfr.liqax/y4 fp$30 \; mC$ 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. :m qav k c2.lde. ghaxd+x/+q. If they are moved to a new separation of 8.0 cm, what is the electric force betwdk.exg/+:a q c2+.q a. xlvdmheen them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Theg1cofp + 7cv0s 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 direction of the electrostatic force which acts on the ch1o0f+ pc g7vscarge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed a s;;7vsqpsy)h t the ovpq ;7 ysss;)hrigin, -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 at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC a9othq dynu 382t x = 1.00 m; Qdqh8y3o t9 n2u2 = 3.00 mC at 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 seu: m*n+w t qc;ke-tp+tcond 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 magnitut+pn*e-q wc+t; utk:m de 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 (0.3ld3z ts 5n7,fi0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magni7 tf53is zdln,tude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1 v3gl+c ioj,7m04d i :ufql1lz.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of thmjo4 , 7lldcv gfi3zil:q0u+1 e net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatera wvdrf2 ln7:+to lxfp8s+z+;pl triangle whi t+;lvrxnlfs 8p:z+7 +pd2ofwch measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whatg 2gw96ici*rd7 dkplca r4,c) point, 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 wou )*ic,4rcdcap7r ig62w gkl9d ld be zero?

  A +3.0-C charge is at the origin and a +9.0-C h sq2 j (prlw1h:q:ko00kwd/mcharge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is z1:psjq 0r w kh/wm :odl2h0qk(ero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where 4wzcpdg7w17dx9 f(zopk3mq 9 can a third positive charge +q be placed so that the fodxq7 (o4cg1z9zw k9 fmwpp 7d3rce on it is zero?

  A copper penny has a mass of 3.0 g. A toqn aj;vdoep)h* * p 5.1/nkjg)v :;npgjecf*ftal 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 forc23aj jff ;h1op/ e*vaqe of gravity by the attraction of a fixed proton some distance above it. How far above the electron is thaajp2oef f qv*h/31j;e proton?

  Two 0.20-g metal spheres are hung from a common point by 2zgg.wb8+n gz dt5n x3nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle ggzw8n 2+ 3x zgtb.nd5between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a cha+bhy ;xfr+j8ko+ i-z+ia0 rq yrge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the +kzy+0fq rj+xi r-boa 8yih +;nucleus?

  What are the magnitude and direction of the electric field at a distance of 1+ 4 gs45(ylwmfeqv 6j e2(cjel.50 m from a 50.0lv2+cs m y4jfg6l q(jwe5e(4e -nC charge?

  A 5.0-C charge is 10 m fromae:)t , nqlf q05gdld+0 ho7xj a small test charge. What is the magnitude of the electric field at eh 0q),tdangl 0df+5jxoql :7 the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whah2wi0bpgpo 75 t is the direction of the ele7ho0 bppgi 25wctric field?

  A 5.0-C charge is 10 m from a small test charge. What is t rshm4i -,en8w6 qk qfi8yh5jjgnr8t6:h) s 2mhe magnitude of the force experienced by a 1.0 nC charge placed 2s668qnshtk qrj8 iejm :h-g)w85,ymhn if4rat the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated o+as vhv.b x4iz*n2a(by a distance of 4.0 m. What is the electric field at a point midway bz a b(ix.*s a4v+n2vohetween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a 3ulkdem a6h:6e0 bp-x-4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mark?63a-mph elu:k exd0 6b

  A 5.0-mC charge is placed at tges9c1r uvaa+ :j:v* ihe 0 cm mark of a meter 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 auevr a*cjg::s19+vi electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. r uh5u .hjm7ud;vt5e7What is the magnitude of the electric field at thedetu7 hmhv; 5u.7j5 ur point midway between them?

  Three 3.0 mC charges are at the three corners of aw+t9s jqfz4+e *adzwh2i) w v* square of side 0.50 m. The la+wf4 a 9 jqh2w+wi) vzz**destst corner 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 :/vn dk6vtkuw 0(tlkz4p q4s;placed at the corners of the square ak4l/ (z pstv60:v4wk uk;qd nts 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 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 uniform z068ul -5maic* c aopiwi9a 4pelectric field. What is tzoi4*w-6uip m59i aa 8al0c cphe magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass o 5vikj6fgiro(dx (;9 kf $5.0 \times 10^{-3} \; kg$. 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 600 k-v8 cw45hgve0 N/C pointing downward5vh g-4vkcw8e . What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is pl00ef(ebda ;jt;n 9 rufaced inside a uniform electric field, and is suspended against the force of f0neefdt ;0aj( 9u r;bgravity. 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 oc sg 2k f9skyo1r34e:magnitude of the electric field 5.0 cm from the sphere's surface1gk3c 9o2: ksesyfo4r?

  A metal sphere of radius 2.0 c s+-- d/g5e d/hzgf-xhelck;om carries a charge of 3.0 mC. What is the electric field 6.0 cdlf d-k ;/ o+s/hcxh--5eggz em from the center of the sphere?