State the law of conservatuu,rq t/z/u m- ew+rh3ion of electric charge.

  Is it possible for two n 7ztyu-3bibv :egative charges to attract each other?

  Is it possible for a positive and a negative charge to attractx -7uk hyehn.5 each other?

  A glass rod is rubbed with a piece zxcv: .mr5s yw72 bwq9of silk. During the process the glass rod acquires a positive char7 wzb5y wrc9v:q .m2sxge and the silk

  A proton carries a

  The model of the atom shows hy(+5nsghyx h q68.iy a

  A neutral atom always x 0s9cq be3t0ihas

  An atom has more elecb vtg/wmg*3g :qg,*ivgi-/fr8 aiiua n75a i7 trons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuc,ur2g34 ladsz wnx *p)lei are referrar3wg,xzun l*ds4 ) p2ed to as

  Materials in which the electrons are boun5+l/se myu1nhd very loosely to the nuclei and can move about freely sl u/enym15h+ within the material are referred to as

  A negatively charged rod is broujmi ( 6s(w6d2f 3io8 +l rnlrmnqif*i9 i5.oaaght near one end of an uncharged metal bar. The end of the m q. nm3il( i8l9sdmioi(6nao *r+62 fa5rfiwjetal bar farthest from the charged rod will be charged

  Sphere A carries a net p6imc1bfp) :/ rj2l avub c+7vrositive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sph 2u1+6ca :b/ r)fpmv 7bcilrvjere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrgk0cii 2j. 3fquo.-xks vy1 *ar0fyj9 oscope positively?

  An originally neutral electroscope is briefly touched with a positively charged -6q9p;acd2y; naf7puiryyist n g +xse +:;l5 n9r+e-t ; :f a;+glsaqpy y2 i 5c;y6udnxs7piglass rod. The electroscope

  An originally neutral electroscopyr(sgn ow .)8exu l yhc*.sclh/: v8y5e is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, tl)h ys e(n58ch ogx .lcrusw y.v*8/y:he electroscope

  A positive object touches a neutral electroscope, and the leaves separatet 8r:)ajr wo/;kcgb e6. Then a negative oa)reg;rbj/ kc86 ot w:bject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulatfv 42:bv saak8ed 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,kbaf 4: vsva28 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 Concst7uv3 ;os3 sfqs 5+ulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge hnssm v n9terkj:8qv;n/;a 61is larger in m;;8q:ma k6vnvsner1 n9 /t hjsagnitude than the second charge.

  Sphere A carries a net chargeb8af1 m6 kpqa 4g,apn0 and sphere B is neutral. They are placed near each other on an insulated table. Which statement k1p,am ag4f8b6n0aqp best describes the electrostatic force between them?

  Two charged objects attr)pt9, hdmq:ni act each other with a certain force. If the charges on both objects are doubtn i9dmqph: ,)led with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces t4c/19rop rru of F on each other. If the charges are separated by a distance of d/3, what arpo 1cr/ rr49tue the new mutual forces?

  Two charged objects attract each other with a force zeg y -3dkd-3bb* zsm0,dvs+pF. 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 one-fourth its original value? The force is now equal tds pe zk ,ydzd-m3sb-3+v*0bgo

  An electron and a proton are separated by a distancee 8)r1bcszt6i of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the firs8 esr16zc)ib tt electron?

  An electron and a proton g 1-vluyk; pk6 vb9.zem ei83mare separated by a distance of 1.0 m. What happens to the magnitude of the force on the fbv8z3k9e-im;g.y m l6k vpe1uirst electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens v9 ) )tjslbqu 29;qqwito the size of the force on the proton if the electron is moved 0.5 ivq;tb jslq99uqw2) )0 m closer to the proton?

  A point charge of +Q is placed at th a .w vqixx0.94pdqtj-e center of a square. When a second point charge of -Q is placed at onwtdqpx4aqv..09 j - ixe 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 equilatemkqcn n0c 5wv4k( 1h9oral triangle. 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 01nk vk9c4mwoh n(5qc 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 vectz)* *9yrg lz/dil.lv/a)qvtk or?

  At twice the distance from a point charge, the strength of theejg-u4c tiyn)+h2 ;qe sf2w fhdi- /o1 electric field

  Is it possible to hav6 6i -wlfi n957tbvuipe a zero electric field value between a negative and positive charge along the line joininp7ilvf6 5t9niub-w i 6g the two charges?

  Is it possible to have a zero electric field value between two positivvr/ nuhq i,e8yrses:f7)4wq3 qz/y7 be charges along the line joining the two ch : f3ye ,iq7 87rh)/bszvqnsuqr4wye/ arges?

  Electric field lines near p rh yu)u/.rb+0es5hjpsitive point charges

  The electric field shown1rfrph com +v9a j1dl 7cnin(sw., *h(

  Can electric field lines9( scr;m5nm2zyj( mj o intersect in free space?

  A solid block of metal in electrostatic equilibriu,:brqdr j3kuj. (vmc;m is placed in a uniform electric field. Give a statement conc vdk,u;(rm 3jbrjc.q :erning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters a tzrp *odn7t;*re each given the same charge, the electric field (E) midway between the center z p*tort7 *dn;and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a un5*;92kc :dzvveb:rz gnykf gm3 7t2aqiform electric field is directed straight upward. What can be said concerning the chargfg; c2 zar9eqkd*5n3 :vg7y:mvzkt b2e on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric c2bh zhtyaozk oo cno8:85y007g t1)lnharge

  A positive point charge is enclosed in l2tcq9vfpyv 7:*om ae7zy1r 5a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow spherec1 *: ty vaye pfozv7ml9q5r72 has

State three propertipq3d xv hhmeirob8p0ps8c 1d98sq1:me7 ) jj-es of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electro/; vbcxx/ ekt6holb1t f :sz-2-c e-msn 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 protonssqx (1w5 rfsw8yz6e0n than electrons does this piece of8f16e yswr 0(zn xw5qs plastic have?

  What is the charge on 1 kg of protons?;jo x f.do6h pa7))tpt

  An atomic nucleus has a charge of bae3e;fay n6/20athi mn80oi $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, lgzit2apz8 )f5j(,t lhave charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force jzli)z8tl,p(tg2a 5fbetween them?

  A 1.0-C charge is 15 m +( 9b)km mbez bbzii; )b5yo4kfrom a second charge, and the force between them is 1.0 N. What is the magnitude ofkbzi b o )k5mb+9()embi y;zb4 the second charge?

  Two 1.0-C charges have a force between them o8sj/de pwo(: zf 1.0 N. How far apart are they?

  The force between a (e * d(f1rwubhww/. jv$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initialldt69, hkmrse/sb pi 05y 2.0 cm apart, experience a 1.0-N force. If they are p509dsrti mbk 6 /,eshmoved 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 fokx)vyh s 5)f-xc f w:6)zbn6v:5fixon 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 )xv5 6y:ffxxfv5:)z ic6sb-n oh)fkwforce which acts on the charge at the origin?

  Three point charges are placed ohmx- 1grb 1qo.n 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 g11ho-bx qr .mthe electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.i1y. dj0f f2vnzg 9dclc85;un00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x 0dy j ;85f2lfuni.1z9cgdc v n= -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at 5iss gtl 6m6puc;-qw9the 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 9cwg6t6ps- iu ;l5mq sof 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 = 5.0 nuy. dw;a (sckp5i.f5bC is at (0, 0). What is the magnitude of the net force on the 5.0 ip5ky( 5;u.b wf.c asdnC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 13b6pi 0j xcfcm); Q3 = 5.0 nC is atjp0 bf1x6i3cc (0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mg8 aknbu+qej q)k+ 6 zx9os5+lC are placed at the vertices of an equilateral triangle whicxq)+l z g+ o+8bkjues6nk9a5qh 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 what po 8 lc)*htjko)lint, on a line between the two charges, would it be possible to place a charge of -Q such that the electros) hlk *)lt8ocjtatic force acting on it would be zero?

  A +3.0-C charge is at the origic,( (bk 9jnvbcn and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be plbb,n9v jck c((aced so the net force on it is zero?

  Charge +2q is placed at the origin and ci6h6 1u xeqtk4i: uxn2harge -q is placed at x = 2a. Where can a third positive charge +q be placed so thte :64kinhx ixuu1q 62at the force on it is zero?

  A copper penny has a mass of 3.0 g. A total ofe)c--dt 5dwzi $4.0 \times 10^{12} \; electrons$ 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:-iqyth ;e87iq* ggmfw ic,kxg1f04 of gravity by the attraction of a fixed proton some distance above it. How far above the eleci4yg i xtm7ek,;gc bq0f*w1if: hq-8gtron is the proton?

  Two 0.20-g metal spheres are hung from/r.ukkue8uk1 n7d 5:bmmw mo9 a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apartk:demwm oumkk51 nr78u9u ./b 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. What is the magnitude of the electric f ().2sdvs/7qtkmu 6xxha t-vxield at a distance of 1.0 m from the d.hs)/ - s 72xvmx(6tt kxuvqanucleus?

  What are the magnitude and direction of the electric field at a distance of 1phsas()7rbj4 p q43rw.50 m from a 50.0s(pr 34qb)w7 rpha 4js-nC charge?

  A 5.0-C charge is 10 m from a small test .rq4li7jer ,;qrxz:1d3kf a hcharge. What is the magnitude of the electric field at the location of the test r.1 ld;q rz,h7fxij3r4: aekq charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direct 5etn)/hrjx:a ion of the electric firtae/5xn: jh) eld?

  A 5.0-C charge is 10 m from a small test chargeabajyd: 0e/eh.6b ftx5 un7h6. What is the magnitude of the force experienced by a 1.0 /bdu0ex.tafa65 6h:bhnj ey7 nC charge placed at the location of the test charge?

  Two point charges each have a cyu: k ke,-v;cg1)1q hbbapc bh/2fx0value of 3.0 C and are separated by a distance of 4.0 m. Whyekhq /20) bcc ;x-h:ufv1pb cagb1,kat 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 stick and a -4.0 mC charge jk fsde-bw*2p;hh86f is placed at the 50 cm mark. What is the electric field at 28;-bpj kf*sw6hedhf the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark o8r:ldxozlu8 m v)x 6wis7w38 rf 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 electric fie:rsm 8i867vw8w) lxxd3lz or uld zero?

  Two point charges of +3.0 mC and -7.0le zwu cp d7;rprlxi 7.5in(:4 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between td r i e lp;p.i77:clurxznw(54hem?

  Three 3.0 mC charges are at the three corners of a squar-)*ka-bs 8bijtjyg4mo 5: cpre of side 0.50 m. The last corner is occupied by a - y4mc t8i-jargkb:p*jo)s- b53.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. 3p*i(upr;0,dzob9 99eyf7r igvhzm kq , fvm- Charges are 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 electric field atrdpk7ui- qof r3*v( 0hmzg,f;mz9yi,b9ve9p the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it/fpe8o urjqsbg 51 ppuny9)84 is placed in a uniform electric field. What is the magnitude of this electric f418)/p8qe jg 9o 5urpyb funpsield?

  A particle with a charge of 4.r 1z79l8by7z i5eyd rth0 ,e jfzcz47m0 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 0.12,c95rn jooa,m wbz 18v0 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be susn wvbo, jroa9cm5z81,pended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. q,a owritw ueyyk4 9x o85+,p1 The ball is placed inside a uniform electric field, and is suspended against the foo,y84i ouw +yexwqa15, 9rptk rce of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of raoynvh j0tenja,yc q6ie82 ; c,7px/l.dius 10 cm carries a charge of +2.0 mC. What is the magnitude of the elecl7heq 86,yay2;n/.ci ex vn,cjoj0pttric field 5.0 cm from the sphere's surface?

  A metal sphere of raz1n7 n)c nevu:/uc8w qdius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the cencn8)/:nuqc w1u nv z7eter of the sphere?