State the law of conservation of electriy,vzlt1vr p9w 8 l9s(nc charge.

  Is it possible for two uthqf* 2 y o+(/s2dftpnegative charges to attract each other?

  Is it possible for a positiv-w6ulp 0p(mb8an lrr,9 5c zdwzg w5f+e and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Durinu ( xur(piy.j.dq-tmz -:mq8ug the process the glass rod acqu- jz.x(ur: udp.iuq- 8tmq my(ires a positive charge and the silk

  A proton carries a

  The model of the atom showly/j3ph2ty f9mcpa- ( s a

  A neutral atom alwaysn)dvpk hy8p tnql4-7+9cot * r has

  An atom has more electrons than protons.e00dwd iju3z 3q. c-2vnru q3k The atom is

  Materials in which the elect 8tnvo.z jt(tpy :,ac3.o-qzkrons are bound very tightly to the nuclei are referred to 8zk nac .y.-z(o, :jot pt3vqtas

  Materials in which the electrons are bound very loosely to the nucleih 0pj*( e5 nacktumr.: and can move about freely within the material are r0h(pua *enr.m5 t:ckjeferred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. r smof/hjp c5w(; jx(lc*d50 iThe end of the metal ;w0mjfjd*rhx5/ iclcsp5(o ( bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and spht rg9xabsbj (5:+xx t9ere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a (xr9xxb:5g9+tsa bjtwire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electros6 -qj(mftg:8 fv4 joqwcope positively?

  An originally neutral electroscope is briefly touched with a positik29/ *cfghlsf pl5ln0+)z sz zvely charged glass rod. The elec s9+5c2z*g) l zfsk /lnfhl0zptroscope

  An originally neutral electroscope is grounded briefly while a positively*qtv r:xa)a(3 oo h;tm charged glass rod is held near it. After thamov;:(qt o3thr *x a)e glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sepq;v) h+sh pvn- f4kxm)arate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves4v; pvs)qh)m-x knfh+?

  A large negatively charged object is placed on an insulated table.qye,e1fokn9/ v)j5 c v 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, jv e1vf)9,5kqco yn/e 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 t;xy:e*e b7 2igify6sji7cn ( zhe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated b(lq+o)8 6gb z(ryslkpy a distance d. The first charge is larger in magnitude than the second chl 6 kg)rzols8y(q(b+parge.

  Sphere A carries a net charge and sphere B is neuxsh1a4. g4z+jeg.x q vtral. They are placed near each other on g4 sea +zq1.xv.jgh4x an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract u-/z )i5gpn dgtb- .theach other with a certain force. If the charges on both objects are doubled with no change in separati -bg5.hi tz-tdnu/)gp on, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces of m2(lvpmn v+0r 5;jotsF on each other. If thevv +mroj(t0 ls25 npm; charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the f( a5i5k73t wrwh 1p9.leuwey32taqg morce between them if one charge is doubled, the other charge is tripled, and the separation distanc1i(yat etg 2 pr3a 3m9ew5uh 5l.kww7qe 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 disu e4ip.c9 r.udtance of 1.0 m. What happens to the magnitude of cp.uu9de r4i. the force on the proton if a second electron is placed next to the first electron?

  An electron and a pro 9rr, *z-jmaohton are separated by a distance of 1.0 m. What happens to the magnitude *9ma zorh,j -rof the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated )gmy:e)yfcj(9s gpdxz :a7m3*ydn-aby 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 closer to thec)naj7fd* ( yeg:gsx pm9yadym) 3-z: proton?

  A point charge of +Q is placed at the ux df(ln42-secenter of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an (sf-euldx24n 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 pqly 0j(phgp;- laced at the centroid of 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 -gj(ylh0 q ;ppcharge due to a third charge of +Q placed at one of the other vertices?

  Which of the followingzrj jg3-d7 nnx5f1 7rv is not a vector?

  At twice the distance from a point charge, the strength of the elecnssbdqvoi 4 v+,:**a ntric field

  Is it possible to have a zero electric field value between a negati kz5te n*qnlydydb6 ,( f;3(uxve and positiq* y;by63xutzen,nk( 5 d( dlfve charge along the line joining the two charges?

  Is it possible to have a zero electric field value between two posi av,dm) gj (8h4xl:4nlw ,hfsmtive charges along the line joining the two,) hljsfa xvwn8m4m4l:,(dhg charges?

  Electric field lines near psitive point chargesh)k r+k- cbs(e

  The electric field shownz1dkihvljk 4 a-a 3 +9g3hmq3erq6p 4g

  Can electric field lines intersect in frlp - u9cogrl kpbu8dun1mfr:7y : +4z7ee space?

  A solid block of metal in electrostatic equilibrium is placed in z:9 sed5v;z:dv) 1gu m +rk amr*hzq-ya uniform electric field. Give a statement conc:z hkv+raz 9s ;: 5drq* mu1zm-e)vydgerning the electric field in the block's interior.

  If a solid metal sphere and a hollow m g/ n4imsk*+*f1sykg betal sphere of equal diameters are each given the same charge, the electric field (E) midway between tmi1/k * 4nkygbs f+sg*he center and the surface is

  A cubic block of aluminum rests on a wooden table in,:x3 ;a djohet4q 8ial a region where a uniform electric field is directed straight upward. What can be said concerni8xi: aeh loqd3;tj4a,ng the charge on the block's top surface?

  If a conductor is in electrostatic equilzlt81k4. tlba heajb:8bxp/2ibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grounded0 *wggs1 efhw2b9u52(2u5ibuclap fx . As compared to the case without tegcua i5 2wfb (x9u205*fswul2 h1gpbhe hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertiehrx4dp(s 5wp -kke72 ss of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one t4/((unew oni kzc r7t-f,a8:n* sdyjelectron 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 /obv9iltims)uqf0(h9.c- y mprotons than electrons does this piece of plastic ha.o qii9 fvyum -( 0/b)scl9thmve?

  What is the charge on 1 kg ord5 j1d5dujw 8zu (+zpf protons?

  An atomic nucleus has a chaq4zqjj ; p*)vrrge 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 char ,tidn6* r*q6*tuaa u82m(e lpx,llyoge values of 2.0 and -4.0 mC, respectively. What is the magniun2laoa el*8d q*t,*,ly(u6ti p6 rmxtude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between z9waqpl-kphn; 0 lh)*them is 1.0 N. What9pnalqzkh * ;p -)hw0l is the magnitude of the second charge?

  Two 1.0-C charges have a force between * lq + zoeg rerbs6;4et0pzu3cd-n*5gthem of 1.0 N. How far apart are they?

  The force between a htj(8 s(qskf9$30 \; mC$ 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 wqa-pe 3xkz311.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betw1waz3q -pex3keen them?

  Three identical point chargesany .e.c ub9p6 of 2.0 mC are placed on the x-axis. The first charge is at the origin, ty96c. beapn.uhe 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 charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mCh pj+5agoex85y5+ )oh (vr vzg is placed at the origin, -2.0 m C to the right)ovgr8 p5+z5g x ha(j5ovhy+e 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 at x 5vv)m hn ltxbonh;; 588gxs9p= 1.00 m; Q2 = 3.00 mC amx)b5 v 985hxn;vpnhl8s;ot gt 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 cenhg6;5bco n7 boter 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 chagob7 5;bchn6 orge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 9bcem1s(w5m ,vwhr m) nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the bh5v( 1mc)9m ,mr wesw5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC io f8:ol sjo(n8(yhpe 6s at (0, 0). What is the elny ( o(s8ojfho p68:direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equ m+ksinddf9cs7-;m.*fpeny5+ j mu 7e ilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts onyjcesn-+fkm.d57e i u+ m* fd;97pnms any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what poo brm *f,y*zp/int, on a line between the two charges, would it be possible to** by /zprm,of 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 y.sc 3sky:q,x7y;rgi and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on 3x7kiqr.c y,s;:s ygyit is zero?

  Charge +2q is placed at the origin and charge -q is n0)xk xx u)tm1jw mv0+ptv-7nplaced at x = 2a. Where can a third positive charge +q be placed so that the forcejnv0 1tx+mt pukx7vm)0n-)wx on it is zero?

  A copper penny has a mass of 3.0 g. A total of ohesz5k/ np7 2$4.0 \times 10^{12} \; electrons$ 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 v upbidk,f5)i *v1v6l of a fixed proton some distance above it. vui5)bl 1f v,pi6k*vdHow far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting1 8res epiec:. threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle brp1: c.se ei8eetween the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge ofac,zui2b3l 3n1q 6w bd +40e. What is the magnitude of the electric f,2q1ia33lwc b 6udbnz ield at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of twdr/.b7- sv 4,tl) oi3gltcnshe electric field at a distance of 1.50 m from a 50.0-nC chargetg3owl/7v n-4sctd. irb )s l,?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudfl8dek) 0ox5n9hcl h5e of the electric field at the locatio 0 9)xfhdk5hnce5llo8 n of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Wha2a.bvri63 nqr5 b0zq wt is the direction of the electric field.qv2wr z0ir 56 3aqnbb?

  A 5.0-C charge is 10 m from a small test charge. What is the magn.smk . sp-h l l2 j:lvcte.*hdm4;ory7itude of the force experienced by a 1.0 nC cj4mmdcth:ps2k.ls.vhe;l 7 ry l. *-oharge placed at the location of the test charge?

  Two point charges each have a value of 3.03v)mlvsc wpjq z904j9+gd(fx C and are separated by a distance of 39x(49d0ws jq + )zmpgjlvfcv4.0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm m,2uj (bfjyd* t0l7 uusark of a meter stick and a -4.0 mC charge is placed at t fsy7,0jd blu(u2*tjuhe 50 cm mark. What is the electric 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 charx9 6q l+0:g90b8o5sr btzztdug+ym soge is placed at the 5 s u odzx5z90gs:rqy+o6+tlb 9tmbg080 cm mark. 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 = 03* j:kz 5bz -k.,ioywnkzokk aamct(hl ;9/ +h and x = 0.20 m. What is the magnitude of the electric field at the point m+5tzb/k hkijk3y,zam ;an-k( h:wlzok. 9 c* oidway between them?

  Three 3.0 mC charges are at the three corners of a squ/y;tmf8n cf8gare of side 0.50 m. The last corner is y8 f8 fgcnmt/;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. x)xuvtvl9xb oos0q-s713 e /eCharges 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). )xoo s1xxt/l b7vqs u90e3ev- 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 8pd3g4a j*b)m dby.glwhen it is placed in a uniform electric field. What is t*gpd43.abdlm y bj) 8ghe magnitude of this electric field?

  A particle with a chaxgp vql0mhb64ee6 t ot.02ifk2. j 2iu/m.fcx rge of 4.0 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 placed in wamaw07i7 8bo5 atd frv z/p*7an electric field of 6000 N/C pointing downward. Wha70/5f8wvwd o7*7b ara iz mptat charge must be placed on the ball for it to be suspended?

  A foam ball of mass -r/98xt0i e j f 0o1xq+9m7ldlgkcpwh2x g7sa0.150 g carries a 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 hxdjw8gicaxt 9k g9xo70r0pf+21e7l/q lm-s the electric field?

  A metal sphere of radius 10 cmatqkux6 *v1b c,z- kzs13fj acid7.*t carries a charge of +2.0 mC. What is the magnitude of the electric fieldizatc1kaq3k, 6 x-fujc7 tv1sz d.b** 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm cal(d6 n0 d hul8rugl7;urries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of 0;d7u unlh l(gru68dl the sphere?