State the law of conservation pcqafdbl d ,m+ dh3)e. 2,d4wvrft-)kof electric charge.

  Is it possible for two negative charges to attractzbi)i4rb s1cute( j00 each other?

  Is it possible for a positive and a negative ch no .)vetl*pft8n -)quarge to attract each other?

  A glass rod is rubbed with a piece ok3 2l81r gdq/six. ouyt0u2u zaqgy0-1 +u ndtf silk. During the process the glass rod acquires a positive chz r+tsnk-gq21au g0 8.t2 uoqduyx u0 y13i/ldarge and the silk

  A proton carries a

  The model of the atom showsm8:wzy/ssc. m a

  A neutral atom always /9 g,gfysn (nqhas

  An atom has more electrons thanh2* uo0(ft (*o 52ypnixzrje j--yp if protons. The atom is

  Materials in which the electrons are bou )d rbgga5s 0h7r 4t4.pinjhi7nd very tightly to the nuclei are referred to as)g rid r077ph sb hitja45gn4.

  Materials in which the electrons are bound very loosely to the nuclei and ca/hb.i3j7t 5qxw* bhs cn move about freely withbbx7 hsj/5qw.t ci3h *in the material are referred to as

  A negatively charged rod is brought n ta+)m.xd n8ij;qtr-rear one end of an uncharged metal bar. The end of the metal bar fqnx-8 ma.jd;tt + r)riarthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Thxkju2 2 5nkg*vey are placed near each other on an insulated table. Sphere B is briefly touched with a wire that i2u x2*vgkj5nk s grounded. Which statement is correct?

  How can a negatively charged x g2axl7n rwdd(8v3yo 0k5n:krod charge an electroscope positively?

  An originally neutral electroscope is brieflyv g4hkse0k65x6b:sh2qqng :u touched with a positively charged glass rod. The el6s50 4vb:hggk sex 2 kqun:hq6ectroscope

  An originally neutral electroscope is groundedf l xofz+rbej430 e9,w briefly while a positively charged glass rod is held near it. After the glass rod is removed, the 3l4feb ,f o w0zx9+jreelectroscope

  A positive object touches a neutral electroscope, and u5 bvf+93yi p4 lpfmy0the leaves separate. Then a negative object is brough95 yflfymb4vpip0 u +3t near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object y+hp 7:dpdb)n 5mu 4opis 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 ond+5 pyhp4d )po7bmn:u each ball?

  Charge is

  What are the units of the Coulomb const5tu;+fyfdj s)ant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance ea+bop6*j y tc;k0g 2id. The first charge is larger in magnitude than the seco k ;i6paj+bec 0*2ygtond charge.

  Sphere A carries a net charge and sphere B is neutral. oqpih*+,vo2a 9c az1t They are placed near each other on an insulated table.qa12+o,i h cz9* apvot Which statement best describes the electrostatic force between them?

  Two charged objects a0:e a1uq5nio5 bkiq q6ujyv* 0ttract each other with a certain force. If the charges on both objects are doubled with no:5q0 ibij u0yko6 5aueqqnv *1 change in separation, the force between them

  Two charges are separated owzd j t7q8i5et) 4a)nby a distance d and exert mutual attractive forces of F on each other. If the chargesz)nw4q75to)ej it 8a d 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;uqb5ge .o9v force between them if one charge is d95v gof .bq;euoubled, 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 happens cl2zmi/.e st axq /ug1-z 2:pfto the magnitudeazuztq12//.e xsg2m : icpl -f of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are cp*x0::kw 3wn; )n -okm cfnbuseparated by a distance of 1.0 m. What happens to the magnitude of th 3onc *-w) b:xw:u pkf;m0nncke force on the first 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.q +.txpjf +s)m What happens to the size of the force onf)jxm+q pts+. 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 square. When a seilh76p4e/jd oyhip/fz8 2d z6ur e*7ycond point charge of -Q is placed at one of the square's corners, it is observed that an electrostat276 hy f*dzze4ej iiyruld 6o/8ph7p/ic 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 cent/ av 7d ;g29 5ztpj+ahiocfp*wroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic+ ;jpdvgh97a*io tapf5zwc 2/ 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 vectoni4.h 1g4mcpfjg0dd0 3r*b ynr?

  At twice the distance from a point charge, the uxmmghwji*)y*vuz 5w(. 4lb7strength of the electric field

  Is it possible to have a zero electric field value between a negative and ,mn7ko5 meyh0positive charge ao y 5nm,me0hk7long the line joining the two charges?

  Is it possible to have a zero electrvt u+ee8)-ihshd 2lc/ic field value between two positive charges along tthu s2e ehd/l ci)8-v+he line joining the two charges?

  Electric field lines near psitive point cha e-wz8cjm 4dl0rges

  The electric field showjgn . +mj i;4pu4lg9ign

  Can electric field lines intersect iz67m c uyg :ot7-(lsp2ht umy7n free space?

  A solid block of metal in electrosta . h*b xl:xd2jt4f(ru/puu .artic equilibrium is placed in a uniform electric fieldb: d t.uru2ua (.pf*hrjx4x l/. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters r 59l8)g.o dj0m q7kfz9czkwm are each given the same charge, the electric field (E) midway between the center and the surface iswk).08comg7jz qrzk5d l9 mf9

  A cubic block of aluminum rests onsur2 6 1, y uspet;w(sly8dsjp96nx +v, twbi; a wooden table in a region where a uniform electric f 6u(pvyuyx;9ws +6idrw,8 ; sns 2l1 eptbstj,ield is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in e3 epo tuadkqeu7 .+;k9lectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere th lcx.y *vsz;yu6i/m:njl15 jlat is grounded. As compared to the case without the hollow sphere, the electric field at lsxc ju5*6l;1/jin z.yl: mvya point directly above the hollow sphere has

State three properties of conductors i6*+l 1ft9 zyjc0s7srkj y5le* fmg* xfn static equilibrium.

State Gauss's law.

  The charge carried by one electron is qdwi 5*x x90rg ;lq(a tgiizk(4p0jk 3$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of zju*ilg/ rm5:s2o: dy+2.00 mC. How many more protons than electrons does thisrz*2d:5 /lsoym :gij u piece of plastic have?

  What is the charge on 1 k/4 hykxrh*)qymg )xv0g of protons?

  An atomic nucleus has a charge of /i 9x.n ztfmsu lb8)u4$+40e$. 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 chargjc,oqc( m.tml 59vff7zt*v g6e values of 2.0 and -4.0 mC, respectively. What is the magnitude oc6v (c*9 5m tltjvg,.f7qzmfo f the electric force between them?

  A 1.0-C charge is 15 m f dgdws3 3x...ovee :esk,o8larom a second charge, and the force between them is 1.0 N. What is the magnitude ogad3 se,oldv.ese .x8o:. wk3f the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How fatcvhshyf088+ lc,7vf r apart are they?

  The force between a y*y+ke m u )eem:x6a0t$30 \; mC$ 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 tho*zul(skhf5o9 soiy p 0g.: ,hey are moved to a new separationyof*i.po59(ol ks z g:h,sh0u of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fra x.kzzw3 lo84fs*)first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. zkasl)w. zr8*fo4xf3 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 mC is placed pmm4ahuhl *.;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 which acts on the charge at the orh ;4uph*am m.ligin?

  Three point charges are located at the following poscf4+,qz+7, c zc,mybsa yy 0boitions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mCmsz,07ccyao,4y b++zf, ycbq 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 r :hhrs4a x4u5kf8c-ssecond point charge of -Q is placed at the upper-left corner.4chxhs4f: 5sur-rka8 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 m, 0); Q2 = -1.0 nC is at (0, 0dy1z v7 zyb,;(u d7j7qo rk,s*wsao0s.10 m); Q3 = 5.0 nC is at , aw0sy7r(;u,qj 71v*okbdos7yds zz(0, 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Qd(alpi l* buvw+q cd,1x5y:3 z2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What(c:dq p,y 51+luivwbzx*d3 a l is the 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 ie0b6okc0*i/ru3a0yhlwqilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any onecw*lq0be/u3 6 0yr 0aiomki/h of the charges?

  Consider point charges of +hz23/ n)w4qk v2e imnyQ and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be poss k)/23zhewm4n2vyin qible to 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 and a +9.0-C charge is at x = 4.0 m. Whe( f 9)znhve ifb-ivjvg.bh). .re on the x-axis can a third charge be placed so the net(bf .nvi zb- e.h gv.ihv))f9j force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where caw dymrc+1idx6 rn7y u9que5 1/n a third positive char51 u/y7 rcrmwdxe +ydnu691 iqge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A sczs/hd. -ul4/v 1db wtotal 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 fow4cul0tut7 1pw37ug* v .q uyorce of gravity by the attraction of a fixed proton 3wotlg u7 vyqtp1 uw0*.4cuu7some distance above it. How far above the electron is the proton?

  Two 0.20-g metal sphemvasi-. vee)9res are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads isme-i ) vv.a9se $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnv1 tprw t/:n,pitude of the electric field at a distance of 1.0 m from the nucleusn:/w trt pv,1p?

  What are the magnitude and direction of the electric field at a distance of 1.5a 0+xu xbm*zh3k-kt/y 0 m from a 50.0-nC chtx-u kzx byhm03a+*/k arge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of tnjvqol (s79 dqi9yan;u,mwq,ar .+ e (he elenje.rdsn ; vm 9ay+l(wou,9,q(iq qa7ctric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is thb j:vj83ujm rv9yf vl d4c5v55e direction of the elec53vru 4jcj by55 vldfjv9mv:8tric field?

  A 5.0-C charge is 10 m from a small test charge. What is tu*0i(ahfwk- to6bha6n b n-6hf 9d9c)gfh z2qhe magnitude of the force experienced by a 1.0 nC chargw-uaffba 06)9h(- hnq* zn6 bh oth dg6cki2f9e placed at the location of the test charge?

  Two point charges each have a value of 3rlti3 jubx0m961 ay6) 8zhqru.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the tm6iu t10l9y3j6uaq) z br xr8hwo charges?

  A 5.0-mC charge is placed at the 0ql.)ml3woc9 hc n4(b n cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electri(c49ln3)bqnmo l. w hcc 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.zdp+rx81us81 ii yp lar9 (u8x0 mC charge is plu p1a z9pd(8 sr+ixx88rl 1iyuaced at the 50 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 - yccpjxlo qwf,:-u7y 7 1ie:s/tv (t(d7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitute/ i:d(-:t js7f u ,co7p(v1y qlcxywde of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Tduy sccxk*.0fs kg2 )7he last cd2 )cukk0xg* .f7ysscorner 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 at the cornx/6fbeow1o nw3oi. db 7e*y +iers of the 1o b wyxb od3ei*+f7/o.wien6 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 square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniformlomani/;u 0q0lk+ 6l k electric field. What is the magnitude u6i00mk/+lalno ;qlk of this electric field?

  A particle with a cha7m/y1zop0mpg 5f lg*aahni: 2 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 an electric field oa lu)o3 b:chiansz ( 0d1)vt0ef 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspenh ulta)1( s:0aev0)o3izbc ndded?

  A foam ball of mass 0.150 g carries a charge of --m 9(jnm:gnr83lkgyfj8.f g l2.00 nC. The ball is placed inside a uniform electric field,3-fnyl8mg(r:jg.fm9n gjk8l and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 ccb;;24zt )8vbcvku; d zx(k5cwu3z-cu i wl+fm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the uwuf- (8c 5t;4z3ul ci;dc+bkvkxz 2b c) w;zvsphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mCd*,f+2x0x ,lgjt n hmf. What is the electric field 6.0 cm from the c 0,lt x+jg,xmhfdf*2 nenter of the sphere?