State the law of conservk snfhys1 u-09ation of electric charge.

  Is it possible for two negative charges 95gluyos6 :-wkyk q 2fto attract each other?

  Is it possible for a positiv-yw8pd( tm*zk/5*zsba h ksi(e and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod du5i)56gbh ;w*c1ip,h,t 1wrm ylnwcacquires)ncy* l6g,w u;mhd1wwri bpi5 h15 ct, a positive charge and the silk

  A proton carries a

  The model of the atom )db +)l1c lc jp7x0vahshows a

  A neutral atom always 44 ps:mgij ws-has

  An atom has more electro6nvlb)1y tn;-ya . oxx5oxi:v ns than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are rk-f b y+3as-khcu(6kveferred -kuvkc 3ky+-b f(h6 asto as

  Materials in which the eloo/b8 xw* upq gxrt.(i28s8o*gf9 wv nectrons are bound very loosely to the nuclei and can move abou98bi/ vguqt 8rf2 xw. o(xs*ponwg8 *ot freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal barl )h28.jl dd pd; .uq7g3ylfdvtejq 9:. The end of the metal bar farthest from the charged rod will be chargjg.dfl8 dt.;yj upd)d lh:ql72 3e9 vqed

  Sphere A carries a net positive charge, and zj 29l;8jzumxvt6k(oow: -cr sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire thaczvkujtm; x-j wo :zl 6r(28o9t is grounded. Which statement is correct?

  How can a negatively charged :di2o )v y t tb)zym0gsa;3ajqndm0*)rod charge an electroscope positively?

  An originally neutral electroscope is briefly touc8ofdmf m+-vkod 8 6nz6z v;8qhhed with a positively charged glass rod. The elect86q8mz+ -vf mz;honkfv 68ddoroscope

  An originally neutral electroscope is grounded b ytxn 4t7t xo . h.1muegs9gg,,/ece4zriefly while a positively charged glass rod is held near it. After the glass rod isy uzoe7mext hgsex,.. 4g ,9t/tc41gn removed, the electroscope

  A positive object touches a neutral electroscobor96i j ;wmh k2py,n39grs0xpe, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the n ky39 sr9w2mb ;ro,x06jihpgleaves?

  A large negatively charged object is placed on an insulated table. A neutral meoz, 4c74mdmi btallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls ob4m ,c4dmi7zalong 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 the Coulomb constay q5 8-pj-gf.s/sj hb sqrc4fw;9n 7cant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargeurqu52bzi0+ m is larger in magnituu iqzr0mb5 +2ude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nea,* syxxqw3tlw r81y+z ;v/hlv ed(6i ar each other on an insulated table. Which stat*id x h 68v tll,ev3s+awz/1( ;qxwyryement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargzw v+1ua(c -eboso 42-9mo ygzz3gv+ies on both objec3bg zvo-z1o u z4+i 9+(2vgywa me-oscts are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attra,njdvr iol*dgz egzhr(u/:c,2 6f (b ,ctive forces of F on each other. If the charges are separated by a distance of d/3, wha6gzof,g,hri/c(2, urvzde (nl: *bdj t are the new mutual forces?

  Two charged objects attract each other with a forc 8 bjo 2qd8jagh mk;.vcucv,/-e F. What happens to the force between2mo/k8v g,8vjju accq; h. d-b 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 by a distance of 1.3ou;qxmm9mm49ilrvo6 h. l,z ,js/ yp0 m. What happens to the magnitude of the , m6mrp 9smxloh/ oz3mjv.i94quyl ;,force on the proton if a second electron is placed next to the first electron?

  An electron and a proton arerv, j-; wuzme8 separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a sez-r8umw , ;vejcond electron is placed next to the proton?

  An electron and a proton ajrs;9t6k;k d( sxwfs1re separated by 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 clkf(srtx6s ;sdk; 1w9joser to the proton?

  A point charge of +Q is placed at the cen cz(e gh;bg8q8ter of a square. 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 c8gcg b8q(h; zeharge at the center of the square?

  A point charge of +Q is placed at the centr52r.vcxcn5qqm-zkl e 8ugl.5*yl6vloid of an equilateral triangle. When a second chargl 5.*vvr25qm n8qe6ku5l.g zcyx-cl le 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 one of the other vertices?

  Which of the following )gx/2s:yqc dfg0dtp /is not a vector?

  At twice the distance from a point charge, the strength of the elecyci,id4o 3h1km 54dwm.wh serq(u i; +tric field

  Is it possible to have a zero electric field value between a negatlrl zci/q5j8 :ive and positive chargei: r5jz/cql8l along the line joining the two charges?

  Is it possible to have a zero eleczlrb3uv8a-(kievmih z.jq-pw ne 1+7i *jh ((tric field value between two positive charges along thq vlv(i-ihawi (p z7u n (bm*-3rj8j.zkh+e e1e line joining the two charges?

  Electric field lines neau0l x/8u 6)r)ga2 to+djsoa csr psitive point charges

  The electric field showc ooajnm9+tafil+)q/ms q8:m o5di2( n

  Can electric field lines intersec pvolsw6a d6:3t in free space?

  A solid block of metal in electrostatic equia 25,ouymlwmtr6pe f:,i98f hlibrium is placed in a uniform electric fiel9 elr,o,aif:u 8fm 5yt2hm 6wpd. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphe c1nd1d 4jd0fu: gbfk+4um3kke2 :gmare of equal diameters are each given the same cha:g+d 04dmkc1kn df24bgf3meu :1jku arge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tablerjd7qx. ta3vx6cs04 d in a region where a uniform electric field is directed straight upwa67qrv x t0da34sdjx.crd. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium n(comq 58e5rujb/0- wdxh mr+v ear an electric charge

  A positive point charge is enclvfz1 jd3c:kmw p5iu/j)0 u:closed in a hollow metallic sphere that is grounded. As comparedfp uu3:0 l1vjz5ckcwi)d/jm: to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of cqs7qf7t+( qq feyd/e19rwpf/ onductors in static equilibrium.

State Gauss's law.

  The charge carried by one eln:m.pe k2s1k uectron 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 mor vg-/1gzr ng(u 15mk)x sbq2fme protons than electrons does-gv1qxunr/bm5 1k s2g f (zgm) this piece of plastic have?

  What is the charge on 1 kg of proal2ry(4cx a0*gav3 wk5on 5 putons?

  An atomic nucleus has a charge of ky+ 3vd38ru 7hu5n/eglu/gbx$+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separahepfx,byvl f. 5w;m(3+ rda4ated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitudfh f+5,rx;(a 3vlwd4y me.ab pe of the electric force between them?

  A 1.0-C charge is 15 m from a second charg1bieq6lc)l8t *pbnra 9, k q6ge, and the force between them is 1.0 N. What is the magni l1*gpt kb)iqb6c ne 89qr6a,ltude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. .2yk/s6l w5esm6 lgwizuic8. How far apart are they?

  The force between a g*v-zgp5bs el tdh. .7$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apar,ezg+ t 1/9 v lcsp-iao1r,xtst, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force bet1a- l,zox/s i,segcp 1trtv+ 9ween them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firstkb;7.wocx d0 53pcr1l; hhbut charge is at the origin, the second to the right at x = 50 cm,l1u wh3 x0.dk5;7rbbcchto; p 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-axigf32lbag9pbxn2r. 3poej 4+ds. A charge of +2.0 mC is placed at the origin, -2.0 m C to the xblob 3pa. 2 + n3gej9prf24gdright 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 8ghqun(2j7 0.ilor2rwe2l5 xyf j/rq = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -yg i0rrx(furl85e2o 7q.h2wjql nj2 / 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 second point cso69gk+ * ww i+ v.yoa.7z nl 7kylk*p9o1vbzmharge 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. W 7b+kp9al zl. mv nk*z7og+okw.61 vyiyow* 9shat 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 (0.30s8* lpxk;(g.b+l 8vs 5 clfqkt m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0,slt* lvgpb f+ck.qxk88 s(l;5 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); Q2 = -1.0 nC i c,w8 tfwcwe:d -;iw-zs at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0f:ewc--w;8wcw izt ,d nC charge?

  Three identical charges o:(k0b-je xt k7abm8 .3oobiihf 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 whihit: -.bkomabk8 7xe(0ib3jo ch acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sejq5ic*t g p6 me2;xezus; .je5parated by 3.0 m. At what point, on a line betjx etc6 5*uqe. ;mg;i5ejpsz2 ween the two charges, would it be possible 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 chargx jm(+ qf,b:zue is at x = 4.0 m. Where on the x-axis can a third u,:q(xbz fm+jcharge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wheriqkl/-mkmny4 6i(mi )d 9i1ioe can a third positive charge +q be placed so that t)/i k m-k mioqimlin4y6 d1(i9he force on it is zero?

  A copper penny has a mass of 3.0 g.*k al9y1iplu 6 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 (j-( p+f2bd yn6xmrglof gravity by the attraction of a fixed progl6d+ yxfj(p2mb( r -nton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a comuu6 9g2 /(yfmvkr-m s zydva.3mon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the af -r ys./ud3vm agmz vu26(y9kngle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of6m*9,huh y0gh: kwowy +40e. What is the magnitude of the electric field at a distance o ,w6y uh* 9:kmh0hwygof 1.0 m from the nucleus?

  What are the magnitude and direction of the ele4gl:wxei/q,5s q t tp*q w+bh4ctric field at a distance of 1.50 m from a 50.0-nC ctqls,q 5 egtq *b p4:whiw4/+xharge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the es- kbeo27 si bg210r,ypm -slblectric field at the locat72 ,b s-be-mr opl02s iksbyg1ion of the test charge?

  A 5.0-C charge is 10 m fro359sd)k vf(m3wmmekg 9:s 6c m.olmalm a small test charge. What is the direction of the electric fiel:3ogfd k9alk( m6).c5e 9sl w vmm3smmd?

  A 5.0-C charge is 10 m from a small test charge. )udd;ol+2o e -c- sfqk What is the magnitude of the force experiencd -d -u ok2sfo+;ql)eced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a val0xd- j)vjcc8nue 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 char- d jn8jvc)0cxges?

  A 5.0-mC charge is placed at the 0 cm mark of a metergwf9s5) mysp+xn*(ojb :t / ar stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cmj+5:9wftrx m )ps*(oy/gnsba mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chw- 1epe2r 2x2-bcphvmarge is placed at the c 2x1e2 pvb2p-mr w-eh50 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 place9h dm;ct*ws7oa r0/kk d at x = 0 and x = 0.20 m. What is the magnitude of the c;ha/o0tsd r9m*k7wkelectric field at the point midway between them?

  Three 3.0 mC charges are at t6mg(zg f-;gx cuopp*; he three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center pz g6ou-*( ;xfpg mcg;of the square.

  Consider a square whic37vsuz; h) o by/cgf104clruxxg.s0 th 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.u1 gv fro0;0yh3 7sl) xc/cs4 z.bugxt0 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 when1nd yy:u1vb +y it is placed in a uniform electric field. What is the magnitude of thi+1y1 :byydvnus electric field?

  A particle with a chargewb,6jx. llk4e pl+ )wo 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 m/ 36pg p4: -cjuabjosyass 0.120 g is placed in an electric field of 6000 N/C pointing downward. Whatp/pacsg- j4bju:6oy3 charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The bw. /jv* du5wlgbj-xx9 all is placed inside a uniform electric field, and is suspended v5 *-ju/xg.l jwbdw9x against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Whxkv mr.d67a4fat is the magnitude of the electric field 5x fdv.47k6rma.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is 730u 6y ymdobpthe electric field 6.0 cm from the center of the spherdu0 637obmypy e?