State the law of conservation of 7u,agblvrn.7 b + w6wpelectric charge.

  Is it possible for t qk5(5ty1 o rqzs5zb+kwo negative charges to attract each other?

  Is it possible for a positive and a negative charge to attract each otherq-0xgjvp/0s z*m4nw3n bdk m1n8h :su?

  A glass rod is rubbed:,) mes v2nc2 arc-auc with a piece of silk. During the process the glass rod acquires a positive charge and,na ru vce2-c):msca2 the silk

  A proton carries a

  The model of the atom showe(s7ltp*r e i;j9q4kqs a

  A neutral atom alway if qj l/j(ds2qk/e2 3l)pxbo5s has

  An atom has more electrons than p20ma x0 hnv31qu3irmvrotons. The atom is

  Materials in which the electrons are bound very tightly to ttc xmf5m1a/7 /w mmq,zhe nuclei are referred to/ q,a/m75xm1cmmwt fz as

  Materials in which the electrons are bound ver+r:aa ,h*pdi1 erk9ult; nz.e y loosely to the nuclei and can move about freely wiitzaknh,re1:a u r *+ .dp;e9lthin the material are referred to as

  A negatively charged rod is brought near one end of an uncharge7+w b8psa)k d ;j)e)d-lawg pbd metal bar. Thejsa 8)ad) wp klb-d;7+eb gwp) end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphele (9 jkg+lag( ze3-hrre B is neutral. They are placed near each other on an insulated table. Sphere B is brie rg l9e-3h(geakjlz(+fly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posi it:za j(papq 0.i+o,ftively?

  An originally neutrawhk8nu15h* m( jbun 1lgi0h8jl electroscope is briefly touched with a positively charged glass rod. The ew1ij h5*nl kunh801mhb8u( jglectroscope

  An originally neutral electroscope is grounded briefly while a positl.)oe,kwvasx 3y) s1yively charged glass rods3sv,e) layk yo.)w1x is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electr 6 tw4 vi+tj5tdc4wnzp*)k+wcoscope, and the leaves separate. Then a negative object is brought near the electroscope, but does vj4kct +cn4d)t ww6ti*+w 5pznot touch it. What happens to the leaves?

  A large negatively c+3,qvi1ehqvjsc(r / b ttl6pm g:76.w7uimtdharged object 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 chv6/+6. g j( qemut7p cmi:dth qrvts3b7l1 ,iwarge on each ball?

  Charge is

  What are the units of the Coulomb consta st* fvb/8s kt+azi:,lnt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largee9g wt ;vpp4u-r int p9-vwg;p4eu magnitude than the second charge.

  Sphere A carries a net char6i fc+(x(cvqd +w 3tnlo2zi *nge and sphere B is neutral. They are placed near each other on an insu+ln w*zvcc6+oqi2i(xf 3 (tn dlated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. q* es k)f-ylqug 2/-ms If the charges on both objects are doubled with no change in separationq*-e/um g2 skfy-q)sl , the force between them

  Two charges are separated by a distance d and exert mutual attracti:m u1 zjuysm:)swm.(n)xbbj5 ve forces of F on each other. If the charges are separated by a distance of d/3,byz)j(:wx)us.u m ns :mbm 51j what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the fovn2( 9zpxxi 7xp: 0m8vlen e-6ufx0ud rce between them if one charge is doubled, tm2nippuv-dxxex908en 7f :6zu(lx v0 he 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 s3p + s.-4i m4ajyp miw)lukse)eparated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electru swsjl3+py))-mmpe4k i.4iaon is placed next to the first electron?

  An electron and a proton are separated b so)v5,okth3oq z k4t6,p)fjvex fe+.y a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to th tv tov, fxp6jk)+qf)3 oeezs45o.k h,e proton?

  An electron and a pr,. a+xq)w a4d)f-k prv: tivzeoton are separated by a distance of 1.0 m. What happens to the size of the v-4kafiq)+ .pzt rd ev :wxa,)force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at i ql7m p):dfg7ia.zzu-kg7 +pthe center of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electros. :q7liz 7ggam+d -pi)uf 7kzptatic 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 triangle. Wh; vp2 t..m1/hbg9 w spb:lb*m7 lbnzecen 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 h*n97 lt s ge1:w.b/bb;m2p mcvlp.zb one of the other vertices?

  Which of the following is nm)*uethq9px 4n8erhogd9. l6ot a vector?

  At twice the distance from a point charge, th2blfy9pj(l d6 e strength of the electric field

  Is it possible to have a zero electric field value between a negative and pos3.k*eahd l*my a/2lepitive charge along the line joining the two hkp2ldaa y *m/ee3.* lcharges?

  Is it possible to have a zero electric field value betzf3f sx w)xmx(3eq(a ;ween two positive charges along the line joining txa wffz;3(x)3 sxem( qhe two charges?

  Electric field lines near psitivey kj8;c r+/kns point charges

  The electric field shown 6jc 9riynqo3 c8xv.o)2gd-f d

  Can electric field lines in,qtt6q ot) *bctersect in free space?

  A solid block of metal in electrostatic equilibrium is placedo(vt+ie4m 6xz in a uniform electric field. Give a statement concerning the electric field in the bloc(6z+om 4xit vek's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are ech:*w) oo4alk ach given the sameacw)*k lo: 4oh charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden t1qg yey5b.9lkm,p /;dd2sgju able in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the bdg,glp1/ky9 qum; jb. s 5d2eylock's top surface?

  If a conductor is in electrostatic equilibrium nearu 9- moa pi+qj86wm+en an electric charge

  A positive point charge is enq7 u9zajnzk*jw2 d,:jclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point dqw*u2nd:zjaj ,7j 9kzirectly above the hollow sphere has

State three properties of conductors in static equilibfofj0 g03+ 64c:4r.s rzc7pore f ojgtrium.

State Gauss's law.

  The charge carried by one et 4lwq *oannk(zc d/):lectron 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 mCwm b(.8z65pmho l 2j7ydpecw1. How many more protons than electrons doobpez(h w571pw2m6lj. m dc8yes this piece of plastic have?

  What is the charge on 1 /:t;/rmu*2ojrccskba+s jp * kg of protons?

  An atomic nucleus has a charge 6 cfbr 89m*gzuof $+40e$. 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 ch 09c nty,kqi(cb76yh3nw3q of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betweecyb q, 33(hct0yn 9q7 kwcn6hin them?

  A 1.0-C charge is 15 m from a second charge, and the force between thexbhkz+ (xqdu434ae m wf8v 0l+m is 1.0 N. What is the magnitude(4 a3 vhd0e4bz x uxqfw8++mlk of the second charge?

  Two 1.0-C charges have a force betcvph+ vypm+5 ib4*my ev-:jb8ween them of 1.0 N. How far apart are they?

  The force between a .2c aw*don zz:, f,gaxmvoj47 $30 \; mC$ 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. If thttw w59trreew9p t )4.ey are moved to a new separation of 8.09t rt.9)rt4www eept5 cm, what is the electric force between them?

  Three identical point charges of 2.0 g+*ngbvdrub 2 *aw9e- 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 mg - w9rdu*+ven *gba2bagnitude 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 2cj9 .voya.hisb;x6d(p.s a sl:x 3 xrof +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 the electrostatic force whicci. s x hp.blossr d9xjx3v2y6:;aa(.h acts on the charge at the origin?

  Three point charges are ldvuu tfyt3:h u. z43j5ei q0yh5,yhb(ocated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0;bjy,(f5yzq03huu4 5v: t 3tedih.hyu 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 sv 2yvkg/+ sx5decond point charge of -Q is placed at the upper-left corner. It is o2vd/g+ sk5 xvybserved 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?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 =y(y+ 93fk mhna -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on+yf3 mnkah( y9 the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.34r10f4p ys3bbpss0+ +t bu ixe0 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 net force on the 5.0 nissp 4e3x0 + ufby1s4prtb+0bC charge?

  Three identical charges of 3.0 mC are placed at y .2whi6xb,ty :whdg1 the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which b :6y1 whgt 2w,yxdh.iacts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated 2 s/8ruxl.optby 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q suchpu/lt sr 2.xo8 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 = 4.0 b5z lstu))u:mr1y6 cx m. Where on the x-axis can a third charge be placed souy :)t16 xrb)ls5mzcu the net force on it is zero?

  Charge +2q is placed at the o85rc8(5uuyjn(g8 ipo m ltll-rigin and charge -q is placed at x = 2a. Where can a jn l tu(8l88ri-um5lo(ygp5cthird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. m 2b (dpi-jd:zclur*jo.g 2+wA 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 fixew0i2psd+of wq d-2),ud 2snbbd proton some distance above it. How far above the electron is the 0bpn+-2sq)2bf 2 ouw, disddw proton?

  Two 0.20-g metal spheres are hung from a common point by n*gsv nx66)h ironconducting threads which are 30 *v)6xr hsin6gcm long. Both 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. 7gblm+ mzz kkj:4i5 a4 What is the magnitude of the electric field at a distance of 1.0 m5 : 44zb+gjmaik7l zmk from the nucleus?

  What are the magnitude and direction of ttljar 61m r 5u* +wn,jxbyw;+g52 mbzlhe electric field at a distance of 1.50 m from a 50.0-nC charmu2b+*za6;5,rlrtwb w+ m j g yl5jx1nge?

  A 5.0-C charge is 10 m from a small test charge. Whats5+o und hg2s9ma1/u4 /vq5qsw e-p kf is the magnitude of the electric fv /wms1h qqsuk+oau/s 5f5npdg 9-42eield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What1 ,w4.v6aoofw fj0ip u is the direction of the elvw6w, foj0foi1. pa4 uectric field?

  A 5.0-C charge is 10 m from a smallup +,9lmq6wlalp* 7k: zyjf z- test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the te: plz l j uyl7afwk9-+6qz,p*mst charge?

  Two point charges each have a value of 3.0 C and are separat1:a fe--.pdjzo p-wbked by a distance of 4.0 m. What is the electric field at a point midway between theo :p -p 1.-zdakbewj-f two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 ejs3 z:v /;hfomC charge is placed at the 50 cm mark. What is the electric field at the 30 : ozhje/;f3vscm mark?

  A 5.0-mC charge is placed at the 0 cm mark oe+ 6z,flub9n hf 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 ch,+hf b9ue6nzl arges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20i+o1fxd8hyv 3b 0u9euq7 g fe0 m. What is the magnitude of the electric field at the pointxegbvh 8+u ife1 9qf0d 037uyo midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The omi; +t/qfscq)/r 1 :mi1pxfolast corner is occupied by a -3.0 mC chargi+o) xp/:;f1/ mstim1f q roqce. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corn-w 6lk m o5l*tlif1 rdk6j4tq*p2rqn/ers of the squarprk2ilo *k dln4 * 1m-qr5j twlt/fq66e 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 square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is 9h oculk0:qqu u;k))m placed in a uniform electric field. What is the magnitude of this electric fu:; hu)c9) kqqu ol0kmield?

  A particle with a charge of 4.0 mC ha2egpeclz .cu s)(7m e5s 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 6000 N/C sin )936kuz trs+g9j upointing downward. What charge must be placed on the ball for it to be suspen gui nu+ 3k)jst9z69rsded?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Thegau ,je37t4 ujsv .ry, ball is placed inside a uniform electric field, and is suspended against the force of gravity. 7yuvj, r gsa,e34uj t. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carriesl+,k 01uyeh +/dc6o:qhrr jbl a charge of +2.0 mC. What is the magnitude of the electric fi+chorj,:+dylkh/elr 1 60u qbeld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0r0( 83ldx c f+bb*w/fkop5cio mC. What is the electric field 6.0 cm from the center of0bx kdwc5 p*+i/cof( l 3ob8rf the sphere?