State the law of conservation of ehlml e 9 8up5v;m2nwt.y)ie p,lectric charge.

  Is it possible for two negative charges to attract eant5i-yczt -7h ch other?

  Is it possible for a positive and a mbaz/ k1 1apg+negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process thoqz ;l.097;hotf jl whe glass rod acquires a wlhz.o; t jol0;fqh9 7positive charge and the silk

  A proton carries a

  The model of the atom shows aa k(u t;zm;gjh3 zt0d2

  A neutral atom always5wj f1a* 4rqsg has

  An atom has more electrons than protons.ox 8sxsr yl8d)6e d2v9q4,lf p The atom is

  Materials in which the electrons are bound very tightly to thxji)+ f g:cjv*e nuclei are referred t+i x:jvcgj f*)o as

  Materials in which the electrons are bound very l2ms)i/fesc *z oosely to the nuclei and can move about freely within the matemsz) i2f/s *ecrial are referred to as

  A negatively charged rodt(bwn a)vpix 3l, /as7 is brought near one end of an uncharged metal bar. The end in wv (a x)3l,b7/tsapof the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphepo q,cwt.q+ q0re B is neutral. They are placed near each other on an insulated table. Sphere B is briefly toucoq,q0 pt wc.+qhed with a wire that is grounded. Which statement is correct?

  How can a negatively chargejx+7+srjqx 7 sx xo6.rd rod charge an electroscope positively?

  An originally neutral electroscope -c8 aq)08vetkid9)k(orrnn iis briefly touched with a positively charged glass rod. The electroscopo rd- vq knti)) ie(n088a9ckre

  An originally neutral electroscope is grounded briefly while a positivelmvwqpmcrr:v ; l7 eh.+;lq; :r6fknk)y charged glass rod is held near it. After the glass rod is removed, the electrosc.rnckr;q );llh 67pf;+r mkv: mwqve:ope

  A positive object toucheo eyz u*7az-h5bom2:ts a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but doey u2tboamzez*5h -:7o s not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tabl 6zyanq4 c*cupw7x3 4de. 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 f43dcyzwn67 auqpx 4*c orward, 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 consk3-- zpleby00hgg *z utant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. gy jaq9;z4+p;e6 p +cybnuh *sThe first charge is larger in magnitude than the secosuga ;y; 6n+qbchpep9 z*+4 yjnd charge.

  Sphere A carries a net charge and sphere B is neutral. They are placuz-n y/o:y5mh uq de517to g0wed near each other on an insulated table. Which statement budw/u-m1yo:z5g qt5oy0 hn 7eest describes the electrostatic force between them?

  Two charged objects attract each other with a certain forc9 ykoio+ 4v5c;git(wfe. If the charges on both objects are dou 4o(iv gk9f+oy iw;c5tbled with no change in separation, the force between them

  Two charges are separated by a distanco+g47f/q(jq ix2mlnje d and exert mutual attractive forces of F on each other. If the charges are separat7ox/q f4q (2jnl+mgij ed by a distance of d/3, what are the new mutual forces?

  Two charged objects attract erzbpl9sjbi3*ewo, ; n7 *3 bygach other with 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 centers is reduced to o9pnlw z37b;b resjb,*oy3ig *ne-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens 6v,tx/li48k2e khlchq bsx11 to the magnitude of the cxk4128 v1,kqt6i /elslhxhbforce 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 hac f9: ad2d*jx*zrj nt-ppens to the magnitude of the force on the first electron if a second a 9z-r*nc2dd:jxt*jf electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens 4k:2j( dsryiu2z,j bx3dd;g kto the size of the force on the proton if the electron is moved 0.50 m closer to the protonrdd:2 k ux,g s yzb;j2k3j4(di?

  A point charge of +Q is placed at the ceb3qze*p4 ); ztuwwsj3nter of a square. When a second point charge of -Q is placed at one of the square's corn3* be4u w;wpzj s)qt3zers, 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 trianglm-w4i1jnirhw atz5+, e. 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 pla4hw 1n+ti amzr ij-5,wced at one of the other vertices?

  Which of the following is not a vecc.ooeu.w7m2t xw6- fator?

  At twice the distance from a point charge, the strengt+j66yc:ld es34lqc *m tgf r0bh of the electric field

  Is it possible to have a zero electric field value b8ois 1 ud0 1 )ebn-rd:tbcew2between a negative and positive charge along the line joining the two charirndo: beb0u -cdw8) 1s1et2b ges?

  Is it possible to have a zero electric field v cqvpy/nii0h4xd56xha8xaf28ls 5/uj d7 5ze alue between two positive charges along the line joining the two chargdv lqyh a 8n6055a/4/xzcj728hdpu x5 ifsixe es?

  Electric field lines near psitive point chargi 5: frqe7c :f,ss9,9ecbbith es

  The electric field shown n kp0hpt:jy nt,zr(x x-j ,qo)1dd-,4 srtzl2

  Can electric field lines intersect in free i3svpv8p qd+c.s27 b zf1;tdn.faco7 space?

  A solid block of metal in f eau 11)m)vixg)q 5x3f 8-gc cu3ebcselectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the elecbe 1g))u)gcexc3ca x8fi f5m-1u3qvstric field in the block's interior.

  If a solid metal sphere anx33-3i,azj bi4yaiz2y +sy s xd a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface2yaxsj4z +izs33-b 3iyayxi , is

  A cubic block of aluminum rests on a wooden table in a res, g/,lozid nl30 rbe8gion where a uniform electric field is directed stra 0,eosrdl bi3 l,8g/nzight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chw/dw;+ 62dfuank;q z carge

  A positive point charge is enclosed in a hollow metallic sphere that im5cxt*ohz4 pmd7th3 ws4+no7s grounded. As compared to the case without the hollow sphere, the electric field at a point diromz7 tpsh +h* m57txncdw34o4ectly above the hollow sphere has

State three properties of conductors in static equilp :u/ 2fwumu0qibrium.

State Gauss's law.

  The charge carried by one elecp 6s.b. ;lc4rcuyxf6 etron 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 more protons thaaxmpc8 t:-jr 1 (jma:zn electrons does mjr:-axja1t cm(pz:8this piece of plastic have?

  What is the charge on 1 8qgn +)ol3 tsny)g +pckg of protons?

  An atomic nucleus has a chargepw+l: wkc 4b ksv wvio+)ntb7l-2 *fk3 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 c xk, k1vnzt7r2m, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electricz7rkxv21,kn t force between them?

  A 1.0-C charge is 15 m from a sece( t9.cpa -0nesl p77u3ppqujond charge, and the force between them is 1.0 N. Wpqjue0cp pt u sa -(p377e.l9nhat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0f(.bpife+ *yi,y ipzf,r9 h((jcak odvs .-)a N. How far apart are they?

  The force between a i/t6np*ppf dtv:8 y-w$30 \; mC$ 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. Ifjx juc5ngxa s02v22 6 v1 +hroooe0vp-hpjf1( they are moved to a new separation of 8.0 cm, what ijx10orh2 f he xao51vsv-+6pocjju20g(2np v s the electric force between them?

  Three identical point charges of 2.0h:k6xv.0x+tghdxp a * mC are placed on the x-axis. The 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 h*xap +vx:h.d6gt0xk acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mb :hdlo,.wo)m C 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 magnitudewlh)o b,o:d m. and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positiontz6yg6lh m+/ (fq 9ad p6 uq0tvo,ne(as: Q1 = 2.00 mC at x = 1.00 m; Q2, tmp (dgo/09e yaq+fn6uzvaq tl(6h6 = 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, dttsc4( a ,fq2a q,4bmand 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 tt(s,4bmfaq 4atq2 , cdhe lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1kjqcq;1 q.r 2;-jagzv.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). -.q ;1r2gcqvajj; qkzWhat is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.3j ;,6f6s bzy,r g+m1cf39itu 6 agtolu3bxg5o0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the nety 5o,m ,6g x36su3 rt ;a+fj1o9igcblb6fgzut force on the 5.0 nC charge?

  Three identical chargfadwb. q-f t2;es of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic foat.;2fbqwfd -rce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are s6mqlsf(,-(p bq uz1 )jeet p(3y8sv bseparated by 3.0 m. At what point, on a line61)qy( 8psul epm3qt,(-(efsbs vjzb between the two 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 a +9.0-C charge is at x = 4uy42 tq;kxhk1 eb 4ge 0l;hi2a.0 m. Where on the x-axis can a third charge be placed so the net force on it is zer;4k42; 0 bhqehyag21lk eixuto?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a .e6)j)k.gtlb v na8mb. Where can a third positive charge +q be placed so that the force on it is z8 jkt.ab e n)bm)lvg.6ero?

  A copper penny has a mass of 3.0 g+jg5wzx0uvrpy 1 1(ty. 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 of a fil-vb-ouz+ 2dy +1c;:o/ 9eydb hfdd hzxed proton some distance above itdydvh;:9zcu yz+bo/ -o he-+dbl12fd. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonu g doxczg.4qp2sq. ;w486ig yconducting threads which are 30 cm long. Both are given ideno8g u6y.z44q2i.;c gqx dps gwtical 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 +40/tpk, w/pwbnv7h z/9shl:r3z e. What is the magnitude of the electric field at a distaphvtzps/ b/zh79,l: /rnwwk3 nce of 1.0 m from the nucleus?

  What are the magnitude and directij-s9a2z; /gsffc. kpu on of the electric field at a distance of 1.50 m from a 50.0-njcf.fzsak 2s9/-g ;puC charge?

  A 5.0-C charge is 10 m from a small test cb h yu:9)0oc5ip50ut( dn xnrgharge. What is the magnitude of the electric field at the location of the test charpr:09 5hd0) gxyunb iut(oc 5nge?

  A 5.0-C charge is 10 m from a small test charge. What is the directioajszq4hr11iozt*f*c oy :; f.n of the eo1*.1fqc4h fo zi*a y;rt zj:slectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the f+fc9mfhik lbst1ogs1yw8 : 07orce experienced by a 1.0 nC charge placed at the location of th7os ygm+i1fk801slht9w: fbc e test charge?

  Two point charges each havqnfm4l3 / -6np pp6p6zekflh9e a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway betwee646q9kln p- zp/pffplm63 neh n the two charges?

  A 5.0-mC charge is placed at tv9m4 )pk0pnh ihe 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the elecm09vpp ki4 nh)tric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter st*hh 3bih9u+g xttwu14ick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining t *1ttgixuh3h9wuh+b4 he two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC agc7z3 zt-ikz6ojea- 6a08 dqbre placed at x = 0 and x = 0.20 m. Whatqaoaz 0zjzbt8 ed7cg ik6-36- is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corne3s0 q 0jm psl.2uiint p/xu(8brs of a square of side 0.50 m. The last corner is occupied by a.3m2qsp0b/s8 ljiu t0up( i nx -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 al b7a*ku)x; jdre placed at 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 the electricxl)a; 7j*bdku 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 un-x/kts0 vg,xh iform electric field. What is the magnitude of this 0gkh, stx-x/v electric field?

  A particle with a charge of 4.0 m2*1ndpq/g t0/ pxgo atC 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 field of 6zrtgj:as d bj5g)f 0imb5c,h)8 4mqo6000 N/C pointi)df jbo5mb4sg605tmgrj,ci z8qa :h) ng downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0e9 2w id*ebu6 1(lym jztp:evda;d.z:.150 g carries a charge of -2.00 nC. The ball is placed inside a unifor1eu;p( abzemy ze.j*9id d6vl::t 2dw m 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 *c hvnv 3np0f4the magnitude of the electric field 5.030hf p v*cn4nv cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the e7k2x(enzo+.sp a l.g tlectric field zp.t+ xl7s (neog k.2a6.0 cm from the center of the sphere?