State the law of conservatrj, 7bel9 cism(7nyi.gv:p q0ion of electric charge.

  Is it possible for two negative+bihv j)+n njyzh9j59 charges to attract each other?

  Is it possible for a positive and a negative charge tnbzi +n7jpmr x/6v3h 1drh.53vyc : gzo attract each other?

  A glass rod is rubbed with xe2dx jkh;b37hh0v.f2ddf, 4gbe4d aa piece of silk. During the process the glass rod acqxh dj2fa0bd;e2g d3,bx 4 d4f7.hvkh euires a positive charge and the silk

  A proton carries a

  The model of the atom sho/akez gb3 ana4ad17yn0(wk7x0 ss0olws a

  A neutral atom always haa 0p:t;f8*xhppd,/cxqj e u(ys

  An atom has more electrons than pemz a0mi2tj( )3-z ifnrotons. The atom is

  Materials in which the electrons are bound very tightly q, t (p48niub ,on6vfvto the nuclei are referred tfq,v ,pvn46ib8no(u to as

  Materials in which the electrons are bound very loosely to the nuclei and can y1:hszm +bg;6f 4ywis move about freely within the m sbz gw1:4;hyi6ym+ fsaterial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. lmckw)*b ru :6a:vmi106q1jvka d nf8The end of the metal bar fart 1:d1ml0vwv6 ajbku:6k *mf8 crn) iqahest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are place4it bw6o py3p,7 fkya(d near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is pfp6ya(o37bty k i,4wcorrect?

  How can a negatively chargg17)d:g;ipw q d crk5n 9aw4hsed rod charge an electroscope positively?

  An originally neutral electroscope is o+xaa- 5 6movhy/yq*g briefly touched with a positively charged glass rod. The el6qhy5 a /vogmo-*y+xaectroscope

  An originally neutral electroscope is ocoh+p-2kaz: grounded briefly while a positively charged p:a+o 2ko-hzc glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral el2xu: e-0fq ockectroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens-u ke0:qo 2fxc to the leaves?

  A large negatively charged object is p1qjley429 gcclaced on an insulated table. A neutral metallic ball rolls straight toward the object, but st1yce49q2 cgljops 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 Co1 yb kgd20ux1dulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separaxee5 (06n dgg*0 z*hhqldpq 5zted by a distance d. The first charge is larger in magnitude than thh0 6 e5ng0dqxe *h5zzpq*(lgde second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed n t5 n. *ke* a-ivi04;zynhmgxiear each other on an insulated table. Which statement best describes the electrostan hvme- igk*.yx zian;50i4 t*tic force between them?

  Two charged objects attract each other with a certain force. If the charge /-ao ;fe/(k5u tfrhvqs on both object efuaq(5; tk v/of/-rhs are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert m.gyz-0hwf6:mwbp 9bbutual attractive forces of F on each other. If thefg0:bw6y bzph-mb. 9 w charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eaj,x95zi:f w:j p;zevsch other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, ajzs 9w 5v :p;xiz,fej:nd 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 se,lcadwu * ;s1g5 9zwfpparated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second cpfu s19wl,dg *;z5awelectron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.03 k :mlenzld/pr.(al 8 m. What happens to the magnitude of the force on (pk8ael ./l: 3r nlmzdthe 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. What happ c2i;tonua7-b h0s 6pjens to the size of the force on the proton if the electron is moved 0.50 m clos a2pt0bn7so;i6 -uh jcer to the proton?

  A point charge of +Q is placed axgm+9k by3-hgt 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 yb g +g3-9mxhkother 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 sfj(x/a 9ws sw-v(z 1wwg7(rjcentroid of an equilateral triangle. When a second charge of +Q is placed at one of ts(gwv ( xswjj w-s rwaz(7f1/9he 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 is64mcamtg mg .i xw7j38 not a vector?

  At twice the distance from a point charge, the strength of the n zl95va4h/ jc ls*5lbelectric field

  Is it possible to have a zero elehrbrnqa zhe:)393 8frctric field value between a negative and positive charge ah93n he z 8r:b)rr3fqalong the line joining the two charges?

  Is it possible to have a zero electric field vall ;gv-l5nxt(i wqaok9q /(:-lw ,fkjp ue between two positive charges along the line joi- gi:tnqlfp;,-kw(/q5wjv(kalx 9l oning the two charges?

  Electric field lines near psitive point chsq*s1zd)., zbqp om 4mijggn9r/yx: -arges

  The electric field s4oen )j7. tf3j hhc-aohown

  Can electric field lines intersect in free9h p xds/*wbxlp lt/r1zv(d47 space?

  A solid block of metal in electrostatic equilibrium is placed fa0pl 6q6+o h(1g xay)i ,c;xy+dytae in a uniform electric field. Give a statement concerning the electric field in the block'se+ihyyx6f1lpyd , a; ct+ aqg0(ao6)x interior.

  If a solid metal sphere and z94gbchq7h26:7oruauepft + p/l+mm a hollow metal sphere of equal diameters are each given the same p+l:fu qh96gbz7h+72 uraptc mm oe4 /charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminoz*1 ablwfc*b 6.wu9 num rests on a wooden table in a region where a uniform electric field ilwc1nfwb .*a6*z uo9bs directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatg d9cwb5 /4u+zs3pun dic equilibrium near an electric charge

  A positive point charge31 sfxe0hq7fj is enclosed in a hollow metallic sphere that is grounded. As 3qfefh7 x01js compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertie iwqxgf* e;/,wuyh/hdgzys )+: xj)a( s of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is froho0z)lbs )5:3afs$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a neti.cw/*x hn ;c230bm:3 /mlurwfndan n charge of +2.00 mC. How many more protons than electrons does this piece on2fmc:bnh3/nw d*;3iacu .l/rwmn0x f plastic have?

  What is the charge on 1 kg oxhk ) qa v:lj0a:n8x,pf protons?

  An atomic nucleus has a charge f(vawoqng .qx) j8k( *of $+40e$. 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, htdmc wc4 -,o*7nv40-udddk frespectively. What is the magnitude of the electric force betweed, c-dhw4*4vn 70 ucdkto-m fdn them?

  A 1.0-C charge is 15 m from a second oeyd(7e3 p fx8x: qol4vy/*ow charge, and the force between them is 1.0 N. What is the magnitude of the so x:x8oy4 ol q*7(pv3dye few/econd charge?

  Two 1.0-C charges have a a-e/*kw(szzd23tv roforce between them of 1.0 N. How far apart are they?

  The force between a *6b om9nb. k2 l+8 bdu udf:9s0jsarcb$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apaay 2qon5zb/ f9rt, experience a 1.0-N force. If they are move obqz 2nyf9/a5d to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point char1mdjk k7qo:;mi g0 h*rges of 2.0 mC are placed on the x-axis. The first charge is at the origi oqmj*7;rh:mk0k ig d1n, 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 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 p n2++dnlz)o q -q2a2kwo 4zwy7jy 7okclaced 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 wywq2q7)o - okz2k2+a n lnco+zywdj74hich acts on the charge at the origin?

  Three point charges are t; l1mia02 flq/ c22f)ub afeqlocated 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 force on the 3.00-mC t2 c; e/2a 0flbqua1i l)q2mffcharge?

  A point charge of +Q is placed at the center of a square, and a se,gk4 ba6oe0;jvd pdn4cond 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 thirddnvkd;e0g4, o ap 4jb6 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, 0.10 m); Q3 -copv ).g n)iwi.qhk7= 5.0 nC is at (0, 0). What is the magnitude of the net force oiqw7ncp . vgkoh-) i).n the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Qum h++ vt-6jm78nk) brzpzgl,3 = 5.0 nC is at (0, 0). What is the direction of the net force on m,tgzup-lm8)vz+ j+bnkr h7 6the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateraf)(ku u, be1hal triangle which measurf1uhe(a ku)b, es 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 3.07:i8m .6qdm yoe.wm ok m. At what point, on a line between the two charges, wouldmy 68o.m7q:m. kd oewi 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 charge is at x = 4.0zn:b x()utq;uj mcq .0 m. Where on the x-axis can a third charge be placed sbjz unxt.0:)u(qm ;c qo the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed apeiko i5mx8p-: 9xd,uqd lug6; e a;/et x = 2a. Where can a third positivee po5:xu /d86a glqipid ,-x 9k;uee;m charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 jzjoao*x;* y8ts h- 1mg. 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 of gravity by the at ft5j)auizkc9 5i:.l xtraction of a fixed proton some distance above it. How far above the electron is t5 u .tfa: 9ixzkj5cil)he proton?

  Two 0.20-g metal spheres are hung;cuofs t 8d x9ge1fm+cfi k ;u20b;5gz from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forcec+ gcfibfd ;u9txg82e5k 0zs 1; ;ofmus 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 +40e. What .pp*w9w 3; wqswtjr )pis the magnitude of the electric field at a distance of 1.0 mw* ptp93. rqw;p )wjws from the nucleus?

  What are the magnitude and direction of the electric field at a d2yma;ux6d 8cv uzd5;b istance of 1.50 m from a 50.0-nC c;2md bcxu5dyzu6 v ;8aharge?

  A 5.0-C charge is 10 *v; dbez6z+/tjc 1 oqnm from a small test charge. What is the magnitude of the electric field at the location of the testzconb6/z 1;vt+ ej qd* charge?

  A 5.0-C charge is 10 m from a small test charge. Whxjnx51skor 2:nbgat / :( )ykyat is the direction of the electric fs51ox/jy: gn2)xanrkk(t b:yield?

  A 5.0-C charge is 10 m from a smallj,l i*j oz1s; ozl*,ty test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charyz*t1*ojl iz;j ,l os,ge?

  Two point charges each have a value of 3.0 -4yi ssq2kfg/fptj53 C and are separated by a distance of 4.0 m. What is the ele/iky fpg4-s s23qt5 fjctric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4. ysft* 2r4:cajd :ow*j0 mC charge is placed at the 50 cm mark. What is jt4: c2fj:ory*d as*wthe electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm marktnh: tyl :yb r*+3co3x of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. 3h:c3nyy*t+: bl xort 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 placed at x = 0 and x = 0.20 m.h)i6+ir vc )xj What is the magnitude of the el cji)v)r6+hx iectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0 c c;+aexv;xp7.50 m. The last corner is occupied by a -3.0 mC charge. c c v;pea;+xx7Find 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 corner o0h.22sh -dsfg5bud hs 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 ma5202 h.-fh hsusdb odggnitude 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 electr( tbx:)wvb3qy mzrz73ic field. What is the xvzw:7by mqz3r ( t3b)magnitude of this electric field?

  A particle with a charge of 4.0 mC has a88fqhk7x j,u 0 vhpvq1 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 w58uqw w:)jwcx(u xda(vb /l 5q 4drt9placed in an electric field of 6000 N/C pointing downward. What charg(xwua4urcdl d / w9qq8jw(:xt v5w5b)e must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries vf a7hm39dsa7pr:y e0a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and directio d97eam73ph vy0fars:n of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the z bz:jp j 6,xu-u7pag)magnitude of the electric xp:j,uz6p-abuzj 7 g) field 5.0 cm from the sphere's surface?

  A metal sphere of radius z yk dn wn :rnkmni071:z3d+(h2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the spherenyznn m h+w(d:iz3 kd07r:n1k?