State the law of conservation of electric chargrso0 8zbjpk9 f2;gx )se.

  Is it possible for two negati wckm qtpiz8)1of/z-- ve charges to attract each other?

  Is it possible for a positivej /l+smy(g5 ntu5db60*ihqw c and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During td:y as,rz (ct2he process the glass rod acquires a positive charczt,: dyra(2s ge and the silk

  A proton carries a

  The model of the atom sh7- 6f ;j7t2 iblblmjjw9*oecfjb 5du5 ows a

  A neutral atom always hc klf n0askoipr/* 2;x8vz8 6 af7k7iyas

  An atom has more electrons than protons. The atom f*cw56 cdncx.3 4x6vr5yd ogiis

  Materials in which the electrons are bound very tightly to the nuclei are refe ed1s*9ei.phrrr*ise9dh1.rep ed to as

  Materials in which the electrons are bour 6*qrkocj o0ko3dd9+nd very loosely to the nuclei and can move about *ok rcod d0o qk63j9r+freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharge/m w4go( ;yin9h 6mddwd metal bar. The end of the meta; yi6ohgwmmwn 9dd /4(l bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and spher)*z2s w16are mehyf8je B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which stateme ha6y)w 8rseejzfm2*1 nt is correct?

  How can a negatively ch,rm):m n2)b jigcjq7 harged rod charge an electroscope positively?

  An originally neutral electroscope is *iv(c 4njhjcz w/ e3m4briefly touched with a positively charged glass rj eiz3*m( wccn/hj v44od. The electroscope

  An originally neutral electroscope is grounded briefly while a positively chmbp6w.63iy vtarged glass rod is held near it. After6myp w6bt.v 3i the glass rod is removed, the electroscope

  A positive object touches a neutral electroscop7*ho2p9fa5 e (iini lje, and the leaves separate. Then a negative object is broug79lo epni* h25faji (iht near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged o xdn*m n1 vnjz25x2oc/bject is placed 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 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 ncnx/zmx *vo25 jn 1d2each ball?

  Charge is

  What are the units of 4h/ d/sybp7ahhh,5l je. pwj2 the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are se 4q6eg:btke-pz8m pa6t, rpb 3parated by a distance d. The first charge is larger in mag8 b:e kb46pt63eprm aztg p,q-nitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near eacgnw6hvuq*6 o 5h other on an insulated table. Which statement best describes the electrostatic force 6wqu5o vg6 h*nbetween them?

  Two charged objects attract each other with a certaz l 1qs9j.78-efhoyy r9*egti in force. If the charges on both os-8qeto g1e79zhj 9.lf* y ryibjects are doubled with no change in separation, the force between them

  Two charges are separatu m lnxemx0o)8 .k)8:su, jyfjed by a distance d and exert mutual attractive forces of F on each other. If the charges are separax:8xk.jum) 0 ysjo 8f)nlemu, ted by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each 6oujq kb,)amvu 2;/lhother with a force F. What happens to the force betwe oa,q;2j u6 vlkhu)bm/en 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 to

  An electron and a proton are separated by a distance of 1.0 m. What happena.*f,b g)cc od1 +nrins to the magnitude c,ngb rd)nof 1+a*.ic of the force 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 happens to;odrr*zq(a )f 9dkuz4 the magnitude of the force on the first electron if a second el9ard)*zz oqf4d r;u k(ectron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. zs sme62nj4k8 What happens to the size of the force on the proton if the electron is moved 0.50 m closer to t6n4j m2k8 ssezhe proton?

  A point charge of +Q is placed at the center of a square. When a se-3 otv*tg )sp0 vtt7bucond point ch)pt -tbtu *o 07gvst3varge 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 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 bz2pgsfe.)j3 83 u jwna5rx5a an equilateral 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 of the force that acts on the center charge due to a third charge of +Q placed at one of the other vertices? e)3g ws.5 2nbfr8 ajj3xzu5ap

  Which of the following is not a s hmv((+;oso.zsh cv:rrlg26 vector?

  At twice the distance from a hfo0ib0hwq-(uvv )as+im2. opoint charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative andzc(7w;l 80gkjht g.by positive charge along t.w;k7jbylg h8zg c(t0he line joining the two charges?

  Is it possible to have a zero electj1 v t )gu)/s9ff-wuav;w2nreric field value between two positive charges along the line joining the tw)9e )vwfjs f2r gvut;1wau/- no charges?

  Electric field lines near psitive nha5 i24bp)y ap+skix,lg 07l point charges

  The electric field sh;yy + 70eqks890*c-(-t x o zbdlp8afwl ddxjhown

  Can electric field lines .9 1)trbz ugow evsv4,(xe:)4lsut pu intersect in free space?

  A solid block of metal in 9)ljt3/ lo pvyelectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field)o3plv l9jy/t in the block's interior.

  If a solid metal sphere and a hollow metal sphere of kyqp qy0e a5k;d 8k6i-equal diameters are each given the same charge, the electric field (E) midway between the center and the s;p5key y6d0akq qki-8 urface is

  A cubic block of aluminum rests on a wooden table in 4( r:pcm(euzu a region where a uniform electric field is directed straigmc 4:(pze uur(ht upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium : 9jofpfn3u i7near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that ispolm tw u2o t09pu:n4-o:4 eif grounded. As compared to the case without th 4t0ou 49ewpipnu:2tf-l:m ooe hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conduc sl8t:0cq ;xcn:t 7dnqtors in static equilibrium.

State Gauss's law.

  The charge carried by one el8agsi );mnqh+ 7tl- edyj)mw30bq t8u ectron 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 p8wob:w7( ihmyde ukvm2;fq) 88z ,dxmC. How many more protons than electrons does this piece of pw)eodzxb 7 qdv8pfky :u;m2 mh8i (w,8lastic have?

  What is the charge on 1 kg yby44i d3oofje g3.+aof protons?

  An atomic nucleus has a charge73;xsz1qt +t 3gw w uahf.;jgj 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 valb8) ud*w b+fq(1zoxwk 0ff190yvlw rsues of 2.0 and -4.0 mC, respectively. What is the m) ouwz10 bffqbkw80yx* l9s wfr(d+1vagnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and thejy *1mo*ro4inj*:j e y force between them is 1.0 N. What is the mago*: 4rj*jiyn yme*j1onitude of the second charge?

  Two 1.0-C charges have a force between them of 1.5 s 9woc 5lk:xxg9(ir/vmim4 q/h qq(t0 N. How far apart are they?

  The force between a ,8sy)8kks wzrusm6+ s $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm ap) r0d tmvmm68g(( xbkaart, experience a 1.0-N force. If they are moved to a new a8)mg(mx6trkvd0 bm( separation of 8.0 cm, what is the electric force between them?

  Three identical point chawwfnz o,(d1ibu -u3p2 rges of 2.0 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 thirdd-np woi u,zw32ufb1 ( 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 are pla qiy:4i; 0bfbyced 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 c4y:0bify q bi;m 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 folloa+wcg;vkib i03rl/(c flf5aj0kx3x: wing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC a l 0v3j x: kaccr5k/;+igl (xbfi0wf3at 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 sef*j)z k97ace ; :l-qrylyppq-cond 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-left corner?r q;7lak- cyze9: -plj*q) ypf

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 mbwy*: -7 u 1ecsvambo(); Q3 = 5.0 nC is at (0, 0). What is:oumba1c y7-wbs ( *ve the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30svnp 7.s exkkbi2 ,n63 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 theebn2,7sx si63nk p. vk net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed a,l2or wl8ejdr2 phh *)t the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one ofp) ,rhhred l 2oj8wl*2 the charges?

  Consider point charges of +Q and +4Q, which are separated by jyk-oj3vc -bdt-t y.33.0 m. At what 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 ijyvyt3-o.c tk b-3j-dt would be zero?

  A +3.0-C charge is at the origin anhp f eq 9up-, lm6esgap72;x*fd a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the ne heefm lxgs ,72q*p;uf a6-9ppt force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. 3qg v3p tbq(kb83 xy(wWhere can a third positive charge +q be placed so that the force on it is zek vq(w3bq3g3p b8 ty(xro?

  A copper penny has a mass of 3.0 g. A total o,rb/ pzk;w z9dl da+o4f $4.0 \times 10^{12} \; electrons$ 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 zo,xm2 o- bl ac1b1h8fywj)2jfixed proton some distance above it. How far above the electron2ca,zo-2y) wm b1bjf oj1l x8h is the proton?

  Two 0.20-g metal spheres are hung 9 /a-fh dxtrc3from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces tra/3xd f-hct 9hem 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. x.jiuhqr1w u+;3 bov2cdfi)) 7bwzo3 What is the magnitude of the electric field at a distance2d zu)qcv3r3 ihbojb.w)fo+7 wix ; u1 of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field a0lcy7 dbz1 g5et a distance of 1.50 m from a 50 5bgeyc01dzl7.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitu4m:brvk,x /ld ooy1q+pe8i 6 ude of the electric fixm1ov e+ y: 4krdu,/8piboq6leld at the location of the test charge?

  A 5.0-C charge is 10 pnrqh47z;. s,xoo,l,c8zfq e m from a small test charge. What is the direction of the electric field?x zoofq4,esrqn,8.c7 zp; h, l

  A 5.0-C charge is 10 m from a small test charge. What is the magnitutz ov 85j5kmiw6/u czzdk*dn6 i vd)4 y-i83ljde of the force experienced by ak48m8j vvcnzz i o5*y / t)i6-uidkddw5j3l6z 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value h5q95 h8)yrxz ku 8hpjof 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway h 9 yq58h5jzphk )8urxbetween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC f-bkzbkr +,i;z c/) oy*n8lyscharge is placed at the 50 cm mark. What is the electric field at + cszkzf bk/r8,n oy)by-*l; ithe 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a met(zmd 970kp 8hs6kpydq er stick and a -4.0 mC charge is placed at the 50 cm mph9k(dsd 0pz7 q86ym kark. At what 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 = 0.20 4z iqh-p( yfs0m. What is the magnitude of the electric field at the point midway between tyz0 fs4 qphi-(hem?

  Three 3.0 mC charges are rd tz*i q(d.1gat the three corners of a square of side 0.50 m. The last qi *.dzgr( td1corner 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 placed aiax *ad,fa/8bug2hnod 1) (gnt 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 at the a)f/h do8gix d(u*n ,12an agbsquare's center?

  A force of 10 N acts on a charge of 5.0 mC when ; /)gw;*nitkgh ztjvxpcm)s.3/x xw)it is placed in a uniform electric field. What is th/c vx *)/)ix3gwzk;nhgmt wj pt;.x)se magnitude of this electric field?

  A particle with a charge of 4.0 rrvd)g.dd xecu; ) d9(:u thk)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 planj m836he iwx3ced in an electric field of 6000 N/C pointing6j8w3heinxm3 downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries nij l00 snclkv ed:p4;6n*4uwa charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the elev n6u*:4ijn4dk;w sep 0nlc0lctric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Whwojo rld295e-d c +jb/at is the magnitude of the electric field 5.0 cm from the sporcj ld w+/59j -dbeo2here's surface?

  A metal sphere of radius 2.0 csu s 6f83nfg 9,-r6l-ej 2gyff2fpslpm carries a charge of 3.0 mC. What is the electric field 6.0 cm from usnfggf9 p2-pf2ryej- ,ls663l 8ffs the center of the sphere?