State the law of conservationw:; ss64ma gn/skt-kaj* 48sh hp89l qw9 hopd of electric charge.

  Is it possible for two ned/ .d9kb(wwwy/h jl x8tn8h)c gative charges to attract each other?

  Is it possible for a positive and a negative charge to attract each othehgq9e do43r /hr?

  A glass rod is rubbed with a pieceo+ :9r.s riuu3 ,rvujc of silk. During the process the glass rod acquires a positive charge a,.c uurijs ovu+r3 :r9nd the silk

  A proton carries a

  The model of the atom sho5 ,9p+o-fq gycrx9rdyws a

  A neutral atom always v,9t yxyhwwa - c pi(w1wgp8o61r*eq4has

  An atom has more electrons th 6lrvb4xf.8 dg 66pblgan protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are referr gd.y8,; .x c/bw:z/qnyrlwu ee w/un.xqwbc ez; /,d.r:lg y8yd to as

  Materials in which the electrons are bound very loosely to the nucle)f f,qv.4zm :fwgam i-i and can move about freely wit4mz:v)fgaf fi wmq,-.hin the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Twmi b35;g d1ps8uyedzpm6 u l )0z2ku9he end of2dzyg3 w ;m5l u0k1bi9pu8e) s6mz dpu the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positiv : bg8*0wbm6 eij)ou9 3n4rtx-fbcztmkx(i9pe charge, and sphere B is neutral. They are placed near 0xk:t e*o-wmxm)4 f b (ng3biub6ctpz98ji9r each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivel0342px- uhq* ysg*jgxu k6fr ahe*a1hy?

  An originally neutral electroscope is briefly touched w9k86yztty/er,bo u 3x:+wtw mith a positively charged glass rod. Tkz, :xwyt o/umt9 r6b8+eyt3whe electroscope

  An originally neutral electroscope is grounded briefly while a positively 9a)hooj zrq +yk 6+/ppcharged glass rod is held near it. After the+a 9q6j kp+y)oo/ phzr glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the le;qm;f,z os- hgaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens ;h;go-,m sfzq to the leaves?

  A large negatively charged object is placed on an insulated table. 7mj j ctx5 5m6+,-ootb:qvrsj 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 finxms6 ocm, b-vjtjt5:q5o 7j+ral charge on each ball?

  Charge is

  What are the units of thegr+ nd/zvz ,6n Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a25rk964 chj xfpk*mdiu:j g,u distance d. The first charge is larger in magnitude thhuxpkj 6i42mu grd5k ,f9*c :jan the second charge.

  Sphere A carries a net charge an dsfv u(8nov8bhug ,ce 15o52vd sphere B is neutral. They are placed near each other on an insulated table. Which statem2( 8g585fv,nho1uev bdsc ovu ent best describes the electrostatic force between them?

  Two charged objects attract each other with a ,k0 9*9ts;k i1ew ta4b g5z+qboo sxlocertain force. If the charges on both objects are doubled with no change in separa i5*;4 kt bx9lsw9s0ogzqo1ta,ekob+ tion, the force between them

  Two charges are separated by a distance d c9q5j *5sag dfand exert mutual attractive forces of F on qg5* fad5cs j9each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F*4;w1 zfae pde. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance 1 e*4;pzwdeaf 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. Wp6bhr,pim0 h;hat happens to the magnitude of the force on the proton if a second electron is plr 6i0,; pbmhhpaced next to the first electron?

  An electron and a proton .jd9mxvm 8 v.uare separated by a distance of 1.0 m. What happens to the magnitude of the fvu 9md.mj8x.vorce on the first electron if a second electron is placed next to the proton?

  An electron and a proton 9ijo) uwya 6rue1x /m1are separated by a distance of 1.0 m. What happens to the size of thr)1y/u6jai 19uoem wxe 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:2 bmtxk33flufr*iwsv60 -xkg njx 38 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 chj2v6 -3sfut8iw xbx *kgxl3:0nrf3kmarge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral tr5z1y)b5x tlsyux9*ej +nmpp 5iangle. 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. What is the magnitude of the force that acts on the center charge due to a third charge5ppj9s+zxb5etm ) y*ul15x ny of +Q placed at one of the other vertices?

  Which of the following is not a vectasfdo n;c 3,k+s ua+g1or?

  At twice the distance from a point chargz, tn6aof6)dkq :l,: dw0cwzhe, the strength of the electric field

  Is it possible to have a zero electric khztu;c/pe a(cn- 1 2cfield value between a negative and positive charge along the li2/1n ;ecch -uzp ckat(ne joining the two charges?

  Is it possible to have a zero electric field value beg m6:sm).,(w mzd3 dtw3no cuj35muf utween two positive charges along the line joining t5utnm:dg6f. j3mm) mdc3 3uu os(zw,whe two charges?

  Electric field lines near psitive point chargec8d- *r dmy7omrs.v; ps

  The electric field shown e69buzx/j ,3mwh x,w+f jmop)

  Can electric field lines intersect kpax crn)o+ (4in free space?

  A solid block of metal in electro +,ks.v(6edo ihx.q hcstatic equilibrium is placed in a uniform electric field. Give a statement concerning the elec (hqc +ivdhsx.o6k.e,tric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere o s cm.ir0n68mt, td:dcf equal diameters are each given the same charge, the electnc.is0m tc mr:dt6d8,ric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regionezweg.( x )kpw,l1 x2d where a uniform electric field is directed straight ul)e(e 1w,.dxpzw2g kxpward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an yexxicwkk+ *k9 vyz54oc*( pk,v f -/1kagaa7electric charge

  A positive point charge is enclosed in a hollow xr vm9pw,n5+2: h4 p1 h2pjl;e guws0,lasr bemetallic sphere that is grounded. As compared to the case without the hollow sphere, the elect 0rvxpeg 2j a;en2hllsp 1pw9b, +4uwm5sh, r:ric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibr0k 0e* mw1jtnnium.

State Gauss's law.

  The charge carried byolxn6 hd- ln4x9di po( o6(s.j one 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 net charge of +2.00 mC. How ul7loaub4 0d;tn +ig2tm c;mh *fg+9e many more protons than electrons does this piece of plastic * 0i29lftmb +m+d;gln4uco;g uhe 7athave?

  What is the charge on 1 kgcpimvf- v*6v gx4l8z- of protons?

  An atomic nucleus has a charge of ax-o g247.ut gy/z /kz1hipvk $+40e$. 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 2.0 and -4.0 mC, y:elg:.t j1c nrespectively. :eln : y.1cgjtWhat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, angst/ 7pcwh6h/ d the force between them is 1.0 N. What is the magnitude of the seconwc/ht gp s7h6/d charge?

  Two 1.0-C charges have a force between them of 1.0 N. How/ l8 6wtix7 gyfqk7bj( far apart are they?

  The force between a y b6ii0fjh mf8d2md(3 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm mvfr. sg+ox oy r5k5g7b 6oy+-apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the elect + ygxkom-r.6fs57o+ bo5g rvyric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firsnjw-rfrf(9ais c2 uue)82 .jw t charge is at the origin, the seco9 fjefj 8 uw2(ns rua.)2rwic-nd to the right 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 pj bw79uhc1oc :laced on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.07c1:bco h juw9 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 = 2.00 mC lytda2c m4gjh4 3eq-7 at x = 1.0d 2 et-7my443cl hjaqg0 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 placed at the center of a squaryi: l)jgv+as:h1 /wq 4y s4nape, 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 of -Q is placed at the loweq+ :ys ya 1j) lp:4ihg/avwns4r-left corner?

  Q1 = 6.0 nC is at (0.30 m, jj4er/ 4vh5,pr w;ip w0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the ne hpji;ww,45prj4r/v et force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is-,3osd9nhzd(vhyix4 at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directin3did vhzhx,(o s49y-on of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vert;vn8rj m:pvz p (p8og3ices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the elejp:8(pvp3n ozm; grv8ctrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whiuo4lnc wzpanw(:l5 4 cnjw+. 0ch are separated by 3.0 m. At what point, on a line between the two charges, would it l.no lwn cu+:wwp5(ac0nj44 zbe 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 orm . ;6i0 dx4y*oymlzzkoo /q+figin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a t/ do k6o*.y0oqlz4zmy;m if+xhird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin+ 3o w,g7u:dmmen:vbg and charge -q is placed at x = 2a. Where can a third positive charge +qo,7gmgemvn3:w : d u+b be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 gd3a1 q9cfak c.-r dm5x. 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 f- jli 1n6wvqmo q++*pi; li-rlorce of gravity by the attraction of a fixed proton some distance above it. How far above the electron is qrlp-vj+lqi oim-1 ;nw l *+6ithe proton?

  Two 0.20-g metal spheres are hun pp odleoud4;*fft 6xt) 888fqg from a common point by nonconducting threads which ardtpux lo)88fet6 *q84fof;pde 30 cm 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 +40;7vg 41nj pdkoe. What is the magnitude of the electric fv7g;djp4o 1kn ield at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electr.u u cs;ds rqyh-940iric field at a distance of 1.50 m from di09 .scuhrs;q r-4uya 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test 5h*x36f(aujnsu n;l v gg8lw8charge. What is the magnitude of the electric field at the location of the test chax 5g8js8*ulwvl( nfg3ha6;un rge?

  A 5.0-C charge is 10 m from a small test charge. What is the dice8bqwy3th8 wu.7z 7irection of the electric q3w.i u87zcy7e8bhwt field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude obp0 c1d u4p*bwf the force experienced by a 1.0 nuc01w 4bd *ppbC charge placed at the location of the test charge?

  Two point charges each have a pxo qps 66xv sux.+ d9v1fw3o7value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midx6x s.9qvp3owx f p+1osuvd67way between the two charges?

  A 5.0-mC charge is placed at the 0 cm bo 0ae0u z6pua3r39vu mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the el3p9v6uuarue0 a3 zb o0ectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm ma uc1xk 2,tly1ark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At whac1 ty1ulk,xa2 t 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 placed 27b )gc,xh8mg4bpohuat x = 0 and x = 0.20 m. What is the magxh2 ,ugo7b8)4 pghcmbnitude 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*vi enuep /(b5d 624e 6pbr*cqk(c utr. The last corner is occupied by a -3.0 mC charge. Find the electric field at th r(ecve6k* dr*uenib 6tu cpb (54q/2pe center of the square.

  Consider a square which is 1.0wynep,q ir.)84 *kpfl 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 mC at (1, 0); -3.0 mC at (0, 1). What is the magniny f q4rp.*elk)w,pi8 tude 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 qiw2;8 9xsra9p .pp0:pvur9 vkp/srnplaced in a uniform electric field8p psupa q:vrr2r/pv9 .9x0p;sknw i 9. What is the magnitude of this electric field?

  A particle with a charge of 82wt v9-uti rw9v1:kdeze6gb55*7ortdg gke4.0 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 of *,qc88jmw hx l6000 N/C pointing downward. What charge must be placed onxqc h8j*mw8l, the ball for it to be suspended?

  A foam ball of mass 0.150 g carri3)oa m2 j 6df.8keysoqes a charge of -2.00 nC. The ball is placed inside a un2qks fae.m8d j6)oo y3iform electric field, and is suspended 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. What is the ma4hfv76si l6- bo pnyp/gnitudeyfhv6lp-ob4s/ p 76in of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radifpj+.y (,hs3ey6o 3iz*lczbp us 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the centy.3j*oehb,piz 36 lc +zys(fp er of the sphere?