State the law of conservation of electric charq;2x ;a:8ucsx5v gmk age.

  Is it possible for two negative charges to attract each othe ozm;cf1pcj9 1w93rwkuh.2coh7pm -h r?

  Is it possible for a positive and a negative charge to attract each ot2hr w1og2pah s;gw7v 9her?

  A glass rod is rubbed with a piece ok qw00 yk9.hm9smktv*f silk. During the process the glass rod acquires a positive charge ah0 kymw*vt.9kq m09 sknd the silk

  A proton carries a

  The model of the atom wd. hrwqi,wndl) 5 wg:nd4a22shows a

  A neutral atom alwaysasg ka2h5 1ki:w*gn 2w has

  An atom has more electrons than protons. The atom is 1eniqt+qes0m.+:d n i

  Materials in which the electrons 4/*a zg3gisj,tm(/kl;ks pgaare bound very tightly to the nuclei are referreds a; mpz3/4 si( kgg/gjlt,*ak to as

  Materials in which the electrons are btx 0/6 q fu1u5cp/vfg6exdpn9ound very loosely to the nuclei and can move about freely within the material are referred to g d1tpq6/9/uucexf0vf 6xpn5 as

  A negatively charged rod is brought near one end ofkmboas k;0k2/ an uncharged metal bar. The end of the metal bar fart as;k0b2 ko/mkhest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Tv:wbmd740 9; m9 wbsm2.csxglxhh (zc hey are placed near each othervwxs(;x 97.9d0 : ch4hc2gbb zslm mwm on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elecll5 2ax7 m1qq4ajuz* etroscope positively?

  An originally neutral electroscope ilhpm 9o9qp0 9bs briefly touched with a positively charged glass rod. The elb9lop9 hqp 9m0ectroscope

  An originally neutral electroscope is grounded briefly while a positivelrv +g-t m)a 94ks2n)qakav2 ,ywyk u1xy charged)skyr1-9va ygq x2+a)akkuv24n,m wt glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves ses0888pjwisvai*ui w/ parate. Then a negative object is brought near the electroscope, but / 8w sip*s8j v8iu0aiwdoes not touch it. What happens to the leaves?

  A large negatively charged object is platd)o)9i)f6fao:q r fr ced 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 tha6tffr:or) difo q9))e 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 th :u g7 htp9*vpkjeqr 09n9di-muq,,xe e Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are syqyt9c6 6,qth eparated by a distance d. The first charge is larger in mhqc66q,y tyt 9agnitude than the second charge.

  Sphere A carries a netz r 5d(). hgbtk9k dr.lo*,zhr charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic f h,d ld.rhzgkk rz5to(b).9 *rorce between them?

  Two charged objects attract each other with a certain force. y kf-u;sg) z-s If the charges on both objects are doubled with noy fzk)g;ss-u- change in separation, the force between them

  Two charges are separated b inj,4z u3jr31g-rst oy a distance d and exert mutual attractive forces of F on each other. If the charges are separar1 4-3gusn,jit j3zroted by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each othifs 81p6;v1d tlx6co ler with a force F. What happens to the force between them if one charge is doubled, the other charge is tripl;686 txp1 df c1islvoled, 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 1 ;fgb6fv chatj:o9 rh,zbf0db42b9o 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 first 9hbg2j0v4dhfo6cf o1b,rabb fz 9t ;: electron?

  An electron and a proton are sep kv 9ys))v;6peapl 9ytarated by a distance of 1.0 m. What happens to the magnitude of the force on tesvlkp);a pyy )t96v 9he first electron if a second electron is placed next to the proton?

  An electron and a proton ph*x sql,/sn+: du4 f-o d)rddbmm.* jare 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 c*/b)srmj d 4:u, h dfd*l sdnpx.o+qm-loser to the proton?

  A point charge of +Q is placed at the center of a sqi dp5ivh7,jp014p tkj4 bsxt 07a1ql,/txo cpuare. 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 corners of the square. What isp,tpa b4pqxx1jj 7hkt4dici/ 0p75 sl,vo01t 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 og-jr1t4)zbk the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle'sk4 )otgj 1zbr- 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 4d)x3gzqyd i6 is not a vector?

  At twice the distance from a point charge, the strength of the e urr fh/y:*g fuljc:;qiy3+6ulectric field

  Is it possible to have a zero electric field value betwen nn mxa,-b d33ote,q0en a negative and positive chad xonn3a,-bn,mq3t e0rge along the line joining the two charges?

  Is it possible to have a zero electric field value be)ym3hpeu i(t hs3p,we f(.r/otween two positive charges along the line joining the two charges )mu3/hp,ifes(3ht. repyo w( ?

  Electric field lines ij--y1n qu: wk;y+-xehu qj8y near psitive point charges

  The electric field shownahl;r-scgan2j pbs ,7s/8xm,

  Can electric field lines intersect in free 7oj r4bptr1* heb1 f7m fco+i6space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform ef ruc+6/v5e shlectric fieldf /sc v+h5ure6. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphero/6lo +.bqeyn bkuks 7+u 1,hz9fap:se of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface i+u zofbsa 6:+1onyhseuq.k7l 9p/k,b s

  A cubic block of aluminum rests on a wooden tabl4yn oj,,4 qwute in a region where a uniform electric field is directed strtw ,4y,uoq4jnaight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in elec3 sz3yxlbw+i4 trostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollownk8( r igca3(e metallic sphere that is grounded. As compared to the case withnar3 i ck8(g(eout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibv; a hr z,u29q)vwjskh(1mjr 8rium.

State Gauss's law.

  The charge carried by ozvijxi:bf9v j46/ ep;ne 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 chargmdnqbu.0 y 2*xe of +2.00 mC. How many more protons than electrons does this piece of plast mq bd02xyn*.uic have?

  What is the charge onk + pm 5rox(8cmue:1tp 1 kg of protons?

  An atomic nucleus has a charge ruz: )s3cc4v 7bbfvv: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 2.0 and -4.0 mC,+)fjaojc/ 10p, q bldv respectively. What is the magnitude ofq 1jo cp+lfjd0b/a,v) the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force bet8bp9 1 jsl2rhrween them is 1.0 N. rr2b91 slpj8h What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Hpk(-p56(ls f jhk3eay ow far apart are they?

  The force between a c 7* sxqzmffagvj-c;/-lb 6mz 6zgo47 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiaw2hn5nag).ob):rtnp tc*;n hlly 2.0 cm apart, experience a 1.0-N force. If they are mo) 5. ;ganrnnobc*hwhn t) tp2:ved to a new 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. The first *zq:bj v;9m elcharge 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 zebq jvm:*9l;force which acts on the charge at the origin?

  Three point charges are placed on the x-axi0( ktpjr,: l uiheq0g-cf y;9ns. 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 electrost9g nu-0icplr th, ;jq 0ykef(:atic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at z. pcaw r/:d9;euq xi5x = 1.00 m; Q2 = 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?cwrq/ i ax5z;p:ed.9u

  A point charge of +Q is ./4 plpav;cj+cw-ak )4 6n2oif; yakq m3ogriplaced 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 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-lefo6k f+p4co;- prga;3kvlqmi./) a w4nycji2a t corner?

  Q1 = 6.0 nC is at (0.30 kzt ; 0d:sgantu.5bq0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net fab:z0squ 0n.;5 kg tdtorce 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 j4ta uor6pa64 e02visv 7 sak1m); Q3 = 5.0 nC is at (0, 0). Wh1k027o 6 tpv4ajesu4 vasari6at is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed att xoa 5 seg6ntdk4v)) v)yr,t, the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitu 56gtvr,v ),o eys)kd)n4txtade of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separateqkh+ 0wndcn0.obt -1jh rj v+:d by 3.0 m. At what point, on a line between the t j-+h+c00ntjn krvq1bwdo :h.wo charges, 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 skhkmlbtf/ o86:y 9* hql:6/v/a yktea +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net fskqll*a t kobyvm/y68ef6 ::kht//h9 orce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at muto,) l j)vcx7,k z,v0vir+ s+pjlp )x = 2a. Where can a third positive charge +q be placed so that the force on itlmp skjl+)u)7cvvvxr0i,)t, p z+j o, is zero?

  A copper penny has a mass of 3.0 g.ifasa 7m xa928m:brhl yvb;61 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 attraction34s q+ 8w,yfjk(vias ca;hg:n of a fixed proton some distance above 8+ ka sh4:jcni3;ws fyagqv,(it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting tuw nf4ossn75xe2 0 :(dr k+9elu1dbblhreads which are 30 cm long. Both are given 5lox e:0f9b2eb1+wss k rld 4n(du7nu 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 +40e. Whal 5d(jhi7,du wt is the magnitude of the electric field atj(hw d, i7ul5d a distance of 1.0 m from the nucleus?

  What are the magnitude and dirf;9ky xps3 h-(x r;qkxection of the electric field at a distance of 1.50 m fromxq-psy;xhf;(39kk r x a 50.0-nC charge?

  A 5.0-C charge is 10 m from a m0uhm+u kzr6s90ach4/fiay9small test charge. What is the magnitude of the electric field ua/ur9hc9 +fs0 i0ma z ykm64hat the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What mk9jc. wii,y1a y6;ouis the direction of the electric field.wc9m ,yo6ia; j ky1iu?

  A 5.0-C charge is 10 m frwqd1zt1kujt(9(qc kwd(g v y 58j6d9 yom a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at they 16w z(5yd(td18v k( wd9qcjtg9qujk location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance o2kz8bk c5p(t hf 4.0 m. k (zpt 25k8cbhWhat 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 meter st+zk3fij*r/yzpze 3 q9 ick and a -4.0 mC charge is placed at the 50 cm mark. What is the elecyrpe*9+qj z33zz /ikf tric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charg8set.myliss(d jz.vs4tapa +s7-: k)e is placed at the 50 cm mark. At what 4s8 tdi+a)sal..kte7ssmy s -:pvj(z 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.)1i j:safsw2826 irw5jhaqqr 20 m. What is the magnitude of the electric field at the point mqj 1 aw8hq26jwra :i2if r5s)sidway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Tw 9b0jr5ub.nsl::zmm he last corner is oc9w0m 5nz.lsmbr:j :bucupied 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 ap2cw4 d n9k +0t* s0n ufxr66bgp;iivwt the corners of the square as follows: +4.0 mC at (0, 0);2ppwxgw6+6n *rb90un ; scit dki04fv +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 chada6 *mqtcp3o/ rge of 5.0 mC when it is placed in a uniform electric fq /dc36* mopatield. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a 4o*lhm 14/ xh*ig tfygmass 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 el .:jj;wdvxz 0g2 z,lqzectric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspendewd.vj,2z;: zlgj x0qzd?

  A foam ball of mass 0.150 g carries a charge of -2.00 n 2c3eadl+nd. 1zg5tk* eh)tp iC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. Whkhe*t3 +ig.da2c5)t le1z ndp at are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of 0,1sltu0 xstm +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphe t0lt1 0s,uxsmre's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mpi50xds) ci0b :kqd p0C. What is the electrici d pbx:dqkpc00i0)5s field 6.0 cm from the center of the sphere?