State the law of conservation of enrij; (qt :- sk*1k3uuk(p t :c.ntzedlectric charge.

  Is it possible for two negative charges tyjzj -m wc9j;13xo8w12lviki o attract each other?

  Is it possible for a pylhkp 032z vegoj86a2 kk 6lq:ositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process tewe(+ gr6 .0-ssjf pufpcy00 qhe glass rod acqui+fwjprcpg.-0(sey s ue60qf 0 res a positive charge and the silk

  A proton carries a

  The model of the atom i95+a: kavwnlshows a

  A neutral atom always has xvnf0u. nmmo1k;)9 fu

  An atom has more electrons than protons. The atom is +, 2 wy)8biao8y)abymnm:keo

  Materials in which the electrons are bound very tightly to the nuclei are referr3rhv;30.io ja ae.cibae v6a r(2a,ajeaa3 .i3iao6.rhj(cvbje2 aaa ;ev,r 0 d to as

  Materials in which the electrons are bound very loosely to the nuclei and;*,jg6pa itp0e oirt3 can move about freely within gt r pe;i*t036i,jpao the material are referred to as

  A negatively charged rod is brought near one end of2mm1/g uwuwu fi/-mduq15s ( e an uncharged metal bar. The end of the metal bar farthest fro2e5gw u/msi1m-u1q(/du uwfm m the charged rod will be charged

  Sphere A carries a net posizmt+ob,dj +2c tive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wiretcb+ mz ,o+j2d that is grounded. Which statement is correct?

  How can a negatively charged rod ch(5 kyv22ug2w g wnw lp(tasx ze(vq63.arge an electroscope positively?

  An originally neutral electroscope is bri0*tlac9mq2h (z4ydb otj4;pr- xjf t4 efly touched with a positively charged glass rod. Tt 9adm4bzj*-tqr( chx0;lyjoft44 2phe electroscope

  An originally neutral electroscope m*ln5cq68 ipxt9oz d4ri yz90is grounded briefly while a positively charged glass rod is held near it. A cyolmz rt9zq5i9ni 6 xp*408dfter the glass rod is removed, the electroscope

  A positive object touchel5vmwpm m r;0fl3 ki78s a neutral electroscope, and the leaves separate. Then a negative object is brought nerpillm ;5m3mkw0 8f 7var the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A n prh+ 3 4boxtb8op.vmixy;*-s eutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral meta3mv; t*h+syx poboxi84.rp -bllic 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 each ball?

  Charge is

  What are the units of th6b /.sfxgj w3haqox(0h ks-8 ve Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge/80iigv1mgyy,c 6. t 6falkke is larger in magnitude than the seconlk f86ac/6et.ivkyg0 m i1y,gd charge.

  Sphere A carries a net charge and sphere B is neutral. They are place b63u g nwk:8tq)lu a/*kxzk,bwtl( 7zd near each other on an insulated table. Which st l xq7k63 ztwklwg:n8z) t(,bu* /kubaatement best describes the electrostatic force between them?

  Two charged objects attract e.pezw2lpi ( . vb4rg4yach other with a certain force. If the charges on both objects are doubled with no change gv wp.p4b.42 (elyzirin separation, the force between them

  Two charges are separated by a distance d and exert mutual at 2 gb hxxz.a 1*9e cc1dyj1c hid4u)u9y59qdhftractive forces of F on each other. h.dx*4iuegb ac1 9yf)1 c5ddj2 cu xhqh zy991If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with 9bt8i;blh.hwu4vaqi ; :ax u/a force F. What happens to the force betwhb; h 9:.qix/8w ua; ltvau4bieen 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 +)dkoszk fur 9ncwu4 0q2*: skby a distance of 1.0 m. What happens to the magni*0 +qsw:u 9rk fk zd2cun4sok)tude 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 disk6sy gu.au9:i2n g 22ibc(btn tance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron iug . kgb:iyi62a u2(s 92tcnnbs placed next to the proton?

  An electron and a proton are separ:y yphzxx73 ;rated by a distance of 1.0 m. What happens to the size ofr7hp x3 x;zy:y the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squkt9 yxdk1;ay-h *81 1vhinca bare. 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 is the magnitude of the net electrostatic force acting on the positive char na 8kh1 i*yv1b;dky1tac9h -xge at the center of the square?

  A point charge of +Q is1netkm2 uze *6qfm7l5 placed 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. qee*l2 n1mfm7tu 65z k 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 is not aidx 4 ;+ioh4j xvvelh /j*o1m+ vector?

  At twice the distance from a point charge, the strength of the electric fieldc m-x 82f9diwm

  Is it possible to have a zeroi4nxo/ k 3f a.rq8kme;(b rzb(-3azba electric field value between a negative and positive charge along the line joining the two charo3 rra.-3fa4;q e(anbxi kzmb b8(/kz ges?

  Is it possible to have a zero electric field value between two positive chkd*w,rwv1yk+ : ofnf )uorge: /e9hn)arges along the line joining the two ch1rnuk9 wr:,+oeogeh vy :)*w dnf)f/karges?

  Electric field lines near twym7ntj*9)l kuqw. ) psitive point charges

  The electric field shown m ygd 37hf e-2x8a 0r gni0jm9396pc(hbpra mq

  Can electric field lines intersect in free sp*)pfoepo (xp pp*pgds / q;8/(leez9mace?

  A solid block of metal in electrostati me(pcov+s: ss x,4it(w+g( mkc equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the ble(wso 4(v,ktm+s: cxim+pgs (ock's interior.

  If a solid metal sphere and a hollow m:lq i -m1xsjb(etal sphere of equal diameters are each given the:xqis m-l1(j b same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tat)h3a ,*l -p 4nietzfoble in a region where a uniform electric field is directed straight upward. Wha -aieptt,) hf3z*4nl ot can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equili uov50. m/ necku,yqyrcs022 cbrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundeh( jf7n znu5:yd. As compared to the case without the hollow sphere, the electric field at a point directly above the h n zf:7uyn(jh5ollow sphere has

State three properties of conductors in static equys m z.g7sz,v6ilibrium.

State Gauss's law.

  The charge carried by one elece+b9-cw. ,qf jw(jtfq tron 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 hdm isj *,p7a ;xtq.0/vtha+v. How many more protons than electrons does this piece of plastic vqhhj*aa itv.,xt7 +sp; md 0/have?

  What is the charge on 1mw/ih0/*ip jj kg of protons?

  An atomic nucleus has a charge of1au 9. b5jcj0bqvyn+ r $+40e$. 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 2.0h /z8,rwxn*a2y3x5 p6jveol b and -4.0 mC, respectively. What is the magnitude of the electri6x3y w5r8,n p/hxejbzlo2va* c force between them?

  A 1.0-C charge is 15 m from a second cha xeaip 9. jqanheh m/b*3du/+fc 1.b-arge, and the force between them is 1.0 N. What is the magnitude ph/xdc9if.ea 1bej*mn -/ 3 .qu h+abaof the second charge?

  Two 1.0-C charges have a force between them of 1.0 x3 my();spaz)/ kcvnpN. How far apart are they?

  The force between a rr2tgixva z )c*g +e/.$30 \; mC$ 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 forc xtkcg a-x,) s)py;xt1e. If they are;xx)c)tg a ypt k-s1,x moved 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 thei rag y-(jxva4 m9y/l4 h,tm6h.h z1gx x-axis. The first charge is at the origin, the second to the right 9la4 (1a,6jm-rm4yix/hh.t ghzyg vx 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-m ,cae:nurc+ d;-;kqvaxis. 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. Wc:rud ;n amec kv-,q+;hat are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at tiyklb9mcl o3h8):0 wv,oxcb8 he following positions: Q1 = 2.00 mC at x = 1c vmb)8wo9 l0 ki, c83lo:hbyx.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?

  A point charge of +Q is pg,,-op u0jnlzn:8qv 0y 2xa dplaced 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 ofn 0vxjy :qp -na,u8dlgp0oz 2, -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, c1d6bl/g,jnm / 2 twmjtj/1dg0); 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 f/mw1j 6jb,/ dggnmlt/ 21cjdt orce 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 m); Q32m,c7h)vxz1bikb iu vy2z ud2d29dz/ = 5.0 nC is at (0, 0). What is the d 2 7/91uy,xm2u2czizdd)b b v2izkd vhirection of the net force on the 5.0 nC charge?

  Three identical charges a-cdo wt i:/+hlg6t+r 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 io +tl ahr6wc-g/d:t+ force which acts on any one of the charges?

  Consider point charges of +Q and +4Q,1f1z e,xxaj* u(rg wj2pq 4k,m which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the jqgu(jx12a 1w,xmrp4k, f*z e 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 = 4.0 m. e)3h9kyjd wg7. .t kdxwbeyu.3e07 rmWhere on the x-axis can a third charge be placed so the net force on it iy3gtkebem drk7dy u.w37.wh 0 )e j9x.s zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. W4 d0t ,,x-ywew( mvtjyhere can a third positive charge +q be placed so -et ytx(dwj,m 4,0vwy that the force on it is zero?

  A copper penny has a mass of 3.0 g)yq3,c clnh 7bg; hvo+. 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 t*dz( m t+8 6va9-kykvu+dvy 3sx0eqnattraction of a fixed proton some distance above it. Howdue kk ay+6zv-* t9tx+m sq vn(3y8d0v far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common 7c hbm)x : zm5euq2k;*ug,cohpoint by nonconducting threads which are 30 cm long. Both cbuxz uh5qc*,k:h7eg ;)mm 2o are given 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. What is th1 9t,nuln(ik s4(ao ahe magnitude of the electric field at a distance of 1.htl s(i,kn 9ano a41(u0 m from the nucleus?

  What are the magnitu m.t/ kxpa;ui;c-8th/bq8xqhde and direction of the electric field at a distance of 1.50 m from a 5pubiax- 8hk.8;mht;/qt / cqx 0.0-nC charge?

  A 5.0-C charge is 10 m frnkxpyi rmf3 r vv,0/89fzy)i5om a small test charge. What is the magnitude of the electricnirxyz,vr0pf8 93kf/5m iyv ) field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the d 9asp u0o 65shz-bib4qirection of the electric fiqssu-bz a60b4ohp9 i5eld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of th- saw+qz.*fk;zge 7 nwe force experienced by a 1.0 nC charge placed at the lo- wqg*snkfzwa .7+ ;zecation of the test charge?

  Two point charges each havde2 ):x9b,bfbdtaus9 e 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 between the two 9afbd92esxb:t, du)b charges?

  A 5.0-mC charge is placed at the 0 cm mh ,o),3pb tn qvsnm)+aark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mar+,np)v, btash) 3noq mk?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a hfd26j7.m feg -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is th6g2dh.f fm je7e electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x i0(hsxj9 9u;xqi0 ohh= 0.20 m. What is the magnitude of the electric field at 9s(09;xju ixq0ohihh the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sidenc(j w9* m/gzw: 4dtcvii.kh 6 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the elec:w i9i.*/(ndz6w gk4h vcmjtc tric field at the center of the square.

  Consider a square which x*upd gm3-uzh)m c pkq d9a4)-is 1.0 m on a side. 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 mCc -gmp z9-dp)kmdu)hu*3x qa4 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 charge ofvar k+k/jl:p5w9o,hu 3c)u or 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fieldau, uj )o3lw:orphk+9/vkrc5 ?

  A particle with a charge of 4.0 mC) nu nz/fdub:2s8t 7m u1cy)qb 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 fieqhi6dxnj: h0ps2 3(ind; v0oj ld of 6000 N/C poini:; dh3d0jv62j(xhinn0o psq ting downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a ch+0slhtrbup6vby mog7 (iqf-078wb s .arge 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 electr7 l. -r6o0b fq7wbht um0sgb ip+s8(vyic field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What i4wb+ r,q hyki4bk2p.os the magnitude of the electric fi. wipbr2y,b k+44q okheld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is io9v w(:6jyucxn3.kvthe electric field 6.0 cm from the center of the s9yju:v ic 6.3 novwk(xphere?