State the law of conservation of electric chaei , ydda.hl4;rge.

  Is it possible for two negative charges to attract each otx mxsn .;hb+b6her?

  Is it possible for a positive and a negative charge to attract each othy l0jetabg 8d*n2 y2-cer?

  A glass rod is rubbed with a piece of silk. D2xi:0(hs dnoqb, x7i1yyhei9i, o fr5uring the process the glass rod acquires a positive charg0qs:b ifhh1e,iyxi 9 2rdx 7(,ny5iooe and the silk

  A proton carries a

  The model of the atom o2t rt:-gzox. shows a

  A neutral atom always hasrly8l ,gm ;6ts)ch mc0

  An atom has more electrons than protons. 2 nfkfti)kt9,s(q;x bThe atom is

  Materials in which the electrons are bound very tightly to the nuclei( nbr7(xsxg w2(;qxrk are referred to asxx7b2(ksr(r (;xqwn g

  Materials in which the electte9 5jn;3j3bc+du xg ycu( h.krons are bound very loosely to the nuclei and can move about freely within the material +.cjjuybu 9ne g;3 3t(x5d hckare referred to as

  A negatively charged rod is brought near one end ofy )c7h0h r*rre an uncharged metal bar. The end of the metal bar farthest cerh * yrh0)r7from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neut uyp 9ib+/-b ,mb6;2yttae ywwral. They are placed near each other on an insulated table. Sphere B is briefly touched with a tp2 ;byub6t 9w,iyma+e b yw-/wire that is grounded. Which statement is correct?

  How can a negatively charged3 ;b3 et :,i(sva2xy4xxbbsc76 s cdcp rod charge an electroscope positively?

  An originally neutral r;gnowd mz(*2electroscope is briefly touched with a positively charged glass rod. dog wm(r*;2nzThe electroscope

  An originally neutral electroscope is grounded briefly while a positively chobw9a +8-z:(q-r c u4 eumd. hl7wpgljarged glass rod is held near it. After the glass rod is removed, the eleem .aq 7w ldhz: -pblrjwo+(9u-cg8u4ctroscope

  A positive object touches a neutral electroscope, and the leaves s57yfk 1 mpz1d 3 ecw9e)m+mfnteparate. Then a negative object is brought5c1z m9d kf npwm)71meft3+ey near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insup,e5+ve jm cr,lated 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 to+5eem r,jcpv ,uch 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 Coulomb cxlvg 6(9.bcpsd b,9chonstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distancmc+4sd+ nd-2 : walxn tr8pe7sepm83 xe d. The first charge is larger in magnitude than the mm-p7s8w4deexx 8 nnc+23:lpa s +tdr second charge.

  Sphere A carries a net charge and sph-+c- k )xa6 1ud: h-m5 orisauibew;jjere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatick+6jxum)iai-d-uw: 1;o -erc5s bajh force between them?

  Two charged objects attract each other with a certain force. If ;k jwx1::k 8j ak-frlcthe charges on both objects are doubled with no change in sepfj jk 18lxwr; :ck:a-karation, the force between them

  Two charges are separated by a distance d and exert mutual attractiv7ghc290.p ptsw 0hohge forces of F on each other. If the charges are separated by a distance of d/3, what are the nps9 owgh7 h 2h0.pgct0ew mutual forces?

  Two charged objects attract each other with a force Fied 77iuu gszv,8dl(z5e)os 8 . 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 5zsv )u7s7id liee uzd(o,88gis now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens to yj .k kc7v8v(kthe magnitude of the force on the proton if a second electron is plv(.kv8 kcykj 7aced next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. 1mw; +(1e8rp wgrxkvl*na sv.What happens to the magnitude of the force on the fwlmrgv *p 1a8wkx+ ;n.(e1rs virst 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 hn zy3dxk y1vk2/pfag7p2odb-3q5c e9 appens to the k22 3ye57y /bdo1 a pcf3kqg9pd-nx zvsize of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q isu : o32sbdsz;x5ji9wq placed at the 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 eb:2xo ; j5si sw9d3zuqlectrostatic 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:gl31hh1*- ,0g skfc, ml mxtp: qkrxz of an equilateral triangle. When a second charge of +Q is placlg* l kf:xm,kzqtphhs1 r g mc1-,x0:3ed 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?

  Which of the following is not a vectorvcwjpm:r l,-/ ?

  At twice the distance from a h uvrjw0o lw1ai6e0a ;kcp/9a0xmt02 point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and pm/ y*ty.c a(wlositive charge along the line joining themy/t w.(l ayc* two charges?

  Is it possible to have a zero electric+ u xko4u/vt2l field value between two positive charges along the line joining the two charges/t u+4 v2loukx?

  Electric field lines near pdl9wuim0h x2;/o3 keysitive point charges

  The electric field shosbwnsfy*jsiknkj:b o) cl 56(f0/-vk*9 u ag6wn

  Can electric field lines interso8+u ne,gzmu 1,,(ftck9pc u rect in free space?

  A solid block of metal in electrostatic equilib b 057l nnquyz87)xzyv;fs pr5rium is placed in a uniform electric field. Give a statement concerning the electric field in the blockp;z v5x0b)zqys75ruyln 7f 8n's interior.

  If a solid metal sphere and a holuri *3uo 8cmv:low metal sphere of equal diameters are each given the same charge, the electric f3u ou*i 8mc:vrield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a rego t 56080k ,ni/w4cev 5vsamjxi9 ctfhion where a uniform ele,i8jt 6/v m0sx aec40wo95 5fitv knchctric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric cm+b884dy l apuharge

  A positive point charge is enclosed in a hollow met bua1hgqhz9o8w9+b x.a:jv a,allic sphere that is grounded. As compared to the case wit x9+j, 8 b zo1wba9.hvag:haquhout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equi.z/t7 wl1xb(quo2lkfpm32 nd 9u1 y iwlibrium.

State Gauss's law.

  The charge carried by on;ohnv0*agwrgxke, 9v nz36r5 e electron 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 nwp yc.dc t95s-bq) v7iet charge of +2.00 mC. How many more protons than electsq ctyc -.b59wpd)iv7rons does this piece of plastic have?

  What is the charge on 1 kg of protaeo/ 6 ms8ys9z;tvdd 8vb +/tkons?

  An atomic nucleus has a charge n k f2vq6y-+fb(v:obx s91zkrof $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separata0;u*gnp .ddf ed by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between themu.dnpa;*g0 f d?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1kot)7z 7v*hyt .0 N. What is the magnitude7h)ot zvk*7y t of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. m- sc t((;-wwm*irth gHow far apart are they?

  The force between a gsdz *nm-34n. jq*lui2gwzq xvr( +v9$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, expev0k0b7,b f zgyrience a 1.0-N force. If they are moved to a new separation of 8.0bz7fg ,k0vb y0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axiw lmt-(57dr fsx;v- 3f(kltpc s. 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 thdf (vtxcw5m -;f3-lptr ( kl7se electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.dm(/to 0hk2zr 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 rzh/km (0 t2doforce which acts on the charge at the origin?

  Three point charges are locr0;apxv m4s- g9 dvku4ated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the fovm;- 44gd9 as xprv0ukrce on the 3.00-mC charge?

  A point charge of +Q is placed am2w+ dp2 dmsow+,6ydht the center of a square, and a second point charge of +ds p2d+wwyhmod6 ,2m -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?

  Q1 = 6.0 nC is at (0.30 ;mmmt6 8v)cat +yd8mwm, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitv6mtymd;+ w)8m8amc t ude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC i9ve,4 gvi7kqwiyqfyc/;2ea - s at (0, 0.10 m); Q3 = 5.0 nC is at 7-29vc eqgv ye;,yaik4wq /f i(0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges0 1f 4bpst 2hw9aftml p os*9usa20dh6 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 force which acts on any one of the02w df2mh699 1tts0a fp4spa sohlu*b charges?

  Consider point chargpq aija6sm-l;g 4/3ares of +Q and +4Q, 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 surjal-q ia /6ga3ms4;pch 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 = 4fboz / wv) 8:xu*.g jqh2gcm3h.0 m. Where on the x-axis can a third charge be placed so the net 3:vgf j)mhw/ *2u zhx q8g.obcforce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where 0l3.aofah:isqu 9f nk(9 a abxw )7+bjcan a third positive charge +q be placed sao.sx)iua3 bn (hw 9a:a7 fkb+l09fq jo that the force on it is zero?

  A copper penny has adrixgsjb(zna-730 s a(6:uy h mass of 3.0 g. 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 ofm*tl .)l2qckq gravity by the attraction of a fixed proton some distance aqt2.ll kmq* )cbove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noe0x -d -qnm7zrnconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between - x7-nrqde0z mthe 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 eleg0-s*y qq 7eltctric field at a distance of 1.0 leqs7 t0gq y*-m from the nucleus?

  What are the magnitude and direction of the electric field at a distanvd+t5cmyai ln*x()+vo+ito iy3y) 7g ce of 1.50 m fromy5l ityin+o7v+t + *cvd(ax 3) i)gmoy a 50.0-nC charge?

  A 5.0-C charge is 10 +9f tgklj tclq0/s p7v2n14dd m from a small test charge. What is the magnitude of the electric field at the location of the test chg/ln+d1s2cd tlj0f7vp kt94 qarge?

  A 5.0-C charge is 10 m from a small test charge. What is the direq14p:wf6 lei pction of the electric field?4p 6ifpl 1e:wq

  A 5.0-C charge is 10 m from a small test cc27df zgso3 r/q/nx4yharge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locx qcs7 2 4/n3gyozfrd/ation of the test charge?

  Two point charges each wud2ee znd.(cc;cu 9,4f eij- have a value of 3.0 C and are separated by a distance of 4.0 m. What isic4 dez ndj - e.wu;cfu2(ce,9 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 mh4k vx; q/b 5-s+s5,c2ffmq-yeeteu)s 7nq kw eter stick and a -4.0 mC charge is placed at the 50 cm mark. What is t7s sx f5 /-mcqq- fvbke;nq 2t,ewuesy)4h5k+ he electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a metmibp lz/qbxv5 u:v:/.,oak* cer stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two chvv. x*o:qikcb lpz amb/5/ u:,arges is the electric field zero?

  Two point charges of +3.0 mC a9hnz2tq s1;7muv9bil nd -7.0 mC are placed at x = 0 and x = 0.20 m. What s;9 72mvuhtb19n lz iqis the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a sq..oa+yr,vjqg+r onk1p (.o gnr)x1u ouare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of )n(r npjx+ 1, ruavg+o oo1rgy..ok .qthe square.

  Consider a square which is 1.0 m on a side. Charges are placed at the/a/+ea:yxjcxg0j gx9 corners of the squara g yja9excg+ j/:0/xxe 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 5u3 +sdxr dzk/placed in a uniform electric field. What is the magzxdus/r+ 3 dk5nitude of this electric field?

  A particle with a charge of 4dunp79oy2 dws 394;mpg:al ewy /bum 7.0 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 an electric d5wm,kavla.* field of 6000 N/C pointing downward. What charge must be p,da al.5 mvk*wlaced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a cha)c)r.i (w /vwk 8 0y nv9kej0xqzbx5oqrge of -2.00 nC. The ball is placed inside a uniform electric field, ank)evo 8yv.5i0zk)xqb9 cn(jqx/wr w0 d is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius x7z-6q aiqax2 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the a aiq27xx-6zq sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elect dohr7qn358 oaric fieln7oaq83drh o5d 6.0 cm from the center of the sphere?