State the law of con584*g x3n 7-g m.slbkdft lzobservation of electric charge.

  Is it possible for two negative charges to attraacwa4gz6 r.8 dct each other?

  Is it possible for a s 0)d+p9roow vpositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process +c0x)mcc, vz zo2+c pnthe glass rod acquires a positive cha2x +zvno,z )c+ccpc m0rge and the silk

  A proton carries a

  The model of the atom sp*m s3tof.z0 zhows a

  A neutral atom always h n.,z u2deypzu3)tubt*v8t) c as

  An atom has more electrons than proton m3yw rv)e4d:ss. The atom is

  Materials in which the electrons are boun)g.1) l-xkpxn deb* g0f hmlq4d very tightly to the nuclei are referregqfkxdmb)4g1 plx e h)*.l0n-d to as

  Materials in which the electrons are b70gf5b,cigv xgp.j (n ound very loosely to the nuclei and can move about freely within the m.i g0gcgv bpj(f57,x naterial are referred to as

  A negatively charged rod is brought n+-s7gfk,hs6m unhi 7v ear one end of an uncharged metal bar. The end of the metal bar farthest from the charm-, +nuih 7 gssvhfk67ged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plac ,lpo/e2r 8spxed near each other on an inor2 /,p8p xselsulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negativelygzlx0h+ /cgucx hc1;1 charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly toucheo995 ;* lbu vp.pqgvcbd with a positively charged gl.g9l 95cvv*qpb opu;bass rod. The electroscope

  An originally neutral irbq;hqa6p7+4p; 6cgy-s f0 -ili he selectroscope is grounded briefly while a positively charged glass qihbca +ss0h;fr i;y7qge6ip4--p l6rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leavetk(q y;r1 sf+ds separate. Then a negative object is brought near the electroscope, but does notkq( f yd+1st;r touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tablzgf/mt:c, z 8we. A neutral metallic ball rolls straight toward the object, but st cf:/gwzm,t z8ops 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 on each ball?

  Charge is

  What are the units of the Couul )w+ 3bcw42iiud8pjlomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chai7cuy..pv8pux7m ew(wcd h 65rge is larger in magnitu6c7upwyiwxm8 edvuch7(5p.. de than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They areh :,gdkzxvtz79 o6n1w placed near each other on an insulated table. Which statement best dz6zh dk91gxt v:nw,o7escribes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If tltx 04+y4 v9fw (.yjksps7m ruq2k4fo he charges on both objects are doubled with no change in separation, the force bet7k wvs y(qx4 f4mof+ .92rt4uj0ysplkween them

  Two charges are separated by a distance d and exert mutual attk9bb,egg 1jl (ractive forces of F on each other. If the charges are separated by a distance of d/3, what are the ne,gj 1ke9lgb(b w mutual forces?

  Two charged objects attract each other with a force F. What happens to the f4m c0cvqi3abnyj9u.q3; 3vkahkz5 ;dorce between them if one charge is doubled, the other charge is tripled, and the separation distance between their centk53amhqv0.jc;yu4z a33 9n kvcbq i d;ers is reduced to one-fourth its original value? The force is now equal to

  An electron and a pro z2zvu.v e)/h7q 3ryzoton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the protonzhe/rvu vyq327.zzo ) if a second electron is placed next to the first electron?

  An electron and a proton are separated by a*oa ) mt07b4 8ofesd-xru4mkh distance of 1.0 m. What happens to the magnitude of the force on the first 8ouo0f-4mtb7ra) ke dhm*x4s 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. gv4ihr)+sb 4v vt,r; ggf/rb3 What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the protgi tgf34v4+ vrb; gr),/v hsrbon?

  A point charge of +Q f96rw67ktu9zj 8vwt*jexi :qxn1 1x0edw) igis 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 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 e:0 8 6uvfixxtijxg1rn17wzwd ) w k9e69tqj*the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle.pl1tj 9u:u8 kn 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 charge of +Q placed at one olu8 nt91p kju:f the other vertices?

  Which of the following is not a vect;vqp1 orje eztp(k0 *4qtya*9(ipp3 vor?

  At twice the distance from a point charge, the strength of the w4z36z;7(glcw-bw t a ri zsv3electric field

  Is it possible to have a zero electric field vaj 1;+4eqf7 3bdexi lvglue between a negative and positive charge along thexiq1 lfej+;7e3d4bvg line joining the two charges?

  Is it possible to have a zero electric field value between tw9k2cd 4d-c7 vzyxr .qwo positive charges alongqkzy.wrddc 2v4c- x79 the line joining the two charges?

  Electric field lines near psitive point charge,8xc hj:0npi s1b9ayc s

  The electric field shj0:yz*c +s jlvown

  Can electric field lines intersew)j*b0o5dev b5* yl 9l av*mrbct in free space?

  A solid block of metal in electrostatic equilibrium i/ c8 f2jown(l+ nokin9s placed in a uniform electric field. Give a statement concj cn+o2 of8(n/i l9knwerning the electric field in the block's interior.

  If a solid metal sphere and a hollow meta* p 6bnv d a/tsc6qiz/re9k.u+l sphere of equal diameters are each given the suden6./6kpbr+9 t/iq *a c vzsame charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a womxl,s 9 pjqu7: m;coc1oden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top su mml7u91c;o jcs,q:p xrface?

  If a conductor is in electrostatic equnk2l:+f(vz txilibrium near an electric charge

  A positive point charge is enclosed in dt 7qtb(*mno cwdwa; zl.8p91 a hollow metallic sphere that is grounded. As compared to d7p dztwt;bqowa(8cl1m .9 n* the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriu uitlaw5c 65 (sy(nnk8m.

State Gauss's law.

  The charge carried by on fcnn 7wwcu(xmtj-/ 24h o esn,x45wv5e 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;vh;qebq(ad z/ * 2str of +2.00 mC. How many more protons than electrons does this pie/eta r2zb( vqhd*;q ;sce of plastic have?

  What is the charge onthvqj+sss2 m)zo;t(, 1 kg of protons?

  An atomic nucleus has a chargl8x ziwt+bv7. lg i ne4x/l(:be of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separat-uqg ao ec /uq*0l*zi4krzcd1tjpk z( 8. 20ryed by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between them?.dcoetu0 *8kc41z q* /giz2j0zl(p r-k aryqu

  A 1.0-C charge is 15 m from a second charge, and the force betweenj/ x uzh9w;u4p-vgro (ntnp1, them is 1.0 N. W9,g /-z 4ht vupnj1ru(pown;xhat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How farqy / ,au0.bw6n re83gglnz+wu apart are they?

  The force between a e(81ee8mvq6bhoi+ j xzdoxb u59f6j 4 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0- rsuuzfu:ckeeon:p l80(()cu kn +1l cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric fop(: lc fu1 e )ueus-ozk:8k(c+ nn0lurrce between them?

  Three identical point charges of 2.0 mC are placed on th9wp4xr+ h( 1me)y ezyae x-axis. The first charge is at the origin, the second to the right at x = 50 x)aee(yr 4zywm p1+9hcm, 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-axis. A charge of h jwksh0q8gj) mcrqw5*;nv( .+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 elec hwg8*vqc5) .0njj mw( hqrsk;trostatic force which acts on the charge at the origin?

  Three point charges are located at the following posk yepb.k):y 0czrl. ,mitions: Q1 = 2.00 mC at x = 1.00 m; Q2 = y ,kck.mlr. 0e:zb)py3.00 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 ibty7ej 4z02 bcenter of a square, 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 theb 4j 2bizt7ey0 lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0,3fs3gz2 ut5wvyb-h p9,dnm e( 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC n9 5,fgu33pm y (sbwzh2edv-tcharge?

  Q1 = 6.0 nC is at (0.30 m, 0**oix y 86uzg26;b bqeyp fph/.d m,fb); 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 nC ch ie .;/zbfbq2d8 fmbhg6*p6,pyuy*xo arge?

  Three identical charges of 3.0 mC are placed at the vertices ok5hwt+r m 2bg6b(egs 5f an equilateral triangle which me h5bwg2 6+5 bekstr(gmasures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what nr; uk(is * x x,k(c*pvfriwfdk 3c6;:point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would b;*cx;r(dn ikfkuivcs fk *p6x(w : ,r3e zero?

  A +3.0-C charge is at the o)7bbvn a- 3deny4rm/s rigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third cb3ny 4/e7- asvb)dnrmharge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -qrm6/w :bpf +3pnxyt1q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on i 1prynq f/xw+bmt :6p3t is zero?

  A copper penny has a mass ofousrr,/wrol5 vchl1t39 8* xua t2ku5 cx3rw/ 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 againsxc.siy4a*opuge-k +9 t the force of gravity by the attraction of a fixed proton some distance above it. H. +9o giyasep*-kc4 uxow far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads;c44wluuo)z wf-7jm g which are 30 cm long. Both are given identical chau4wj c)olgzm-u7w 4; frges, 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 iffikb2v+y 1 5n4r+ c 6+z6v1x gczomtcharge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucl1yr +6xk5 v2zifft +co 4i1m+gn6vczbeus?

  What are the magnitude and direction of the elect6*4x ;wg dxcjmric field at a distance of 1.50 m fromgd64xx *;c mwj a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test +bpvi2s0 1s m0:r afbicharge. What is the magnitude of the electric field at the location of theb v0:sa2ir+bip10mfs test charge?

  A 5.0-C charge is 10 m from a sma.i9pqppqv8 d0 ll test charge. What is the direction of the electric fielp.iq8 p0pqdv9 d?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of v(z jx u7:thj-the force experienced by a 1.0 nC charge placed at the location of the test chau(hj x- t7j:vzrge?

  Two point charges each p.7x4n:9(hbz 4 ulrp;t u9th wr8dprshave a value 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 t4 .zbdp(u9p8pn r :r47rsh9tl;uh wxt wo charges?

  A 5.0-mC charge is placed at the 0 c )evdvtw/r5yp 9x2yy 2m mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the el/yrdy2y vw x t)5pev92ectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 y1w) fk4v q+itmC charge is placed at the 50 cm mark. At what point on )vtk+wi yfq14a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 7n g:b57akr9oz6cpok m. What is the magnitude of the electric field at n:o6pr9gb75 ka7oczk the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sif5q*m 53ctxkkii+3crc/h; tzde 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fieldic;/tm+kct*icqh 5k 5r3z fx3 at the center of the square.

  Consider a square which is 1.0 m on a side. Chargepr0(k )i8w0s)fn itxi s 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 mag fksipwx ni0r8(0 t))initude 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 uniform electrt:fxvj y9ew:v3g10pj ic field. ye 9:fxj 10w :j3vvpgtWhat is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mdw f z-i56s7cbass 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 inxx a/9ooco1uz-0n6 rf an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspeco-n90ua1 ozfx x ro/6nded?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The b9gua6tn4*oqtxt. zsj7jz n, , all is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction ojn7zs.tt u,a,6*g n xo9zjq4 tf the electric field?

  A metal sphere of radius 10 cm carries a chargbgvx k3 q-od.-e of +2.0 mC. What is the magnitude of the electric fiel--dkqvx3bog .d 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the li ;hd.llc ,8uelectric field 6.0li8,ucld .lh; cm from the center of the sphere?