State the law of conservation of e-bw +3zh, y)xj x* qfxxrd8qpe91(pgl lectric charge.

  Is it possible for two negative chargel7eam ar0c7 6rs to attract each other?

  Is it possible for a po8 3ixgr5wz 3dw. /atxpsitive and a negative charge to attract each other?

  A glass rod is rubbed with a pieceb nsw8* :kdz*;xg 9zwi of silk. During the process the glass rod acquires a positive charge and the sii ;*dwz 8s9x:kg*bn wzlk

  A proton carries a

  The model of the atom uql(spa9 6xiyv+37jj shows a

  A neutral atom always h8g 6q+iiqxuxvah2p04w,g2w 3l3t elbu- lu6 has

  An atom has more electrons than proc;uco n,dfnd(t1 h(p9tons. The atom is

  Materials in which the electrons are bound very tighrjmsio(e q-1v :8chm*.e 2 mwb fe(re8tly to the nuclei are referred to aqo vre (281hrfec:s (memm*ew8b.j- i s

  Materials in which the electrons are bound very loosely to the nqx(.sl8()af. o yqu(hkh o8 yzuclei and can move about frea ufo.8y( x )yz.lhq((qh8kosely within the material are referred to as

  A negatively charged rod c q3h6 yi d;odrws662mgb3(ifis brought near one end of an uncharged metal bar. The end of theiodi632m 6 y; rbwqfgs c3(h6d metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, a3ur2 .b:frij ind sphere B is neutral. They are placed near each other oj2r ib f3u:.irn 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 electrosco jcs, n(zfc46lpe positively?

  An originally neutral electroscope i fv5; bfj.vwt en.nbisr:4i;(s briefly touched with a positively charged glass rod. The bbvf:jsnv.4 w5.i;tn ; ref(i electroscope

  An originally neutral electroscope is grounded bri* 1o.jvec*v1expwfpbts 78i) efly while a positively charged glass rod is held nea7tip vpe*.jbx)vwf 11*8 eo scr it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, anu9 q-2 kx2lmied the leaves separate. Then a negative object is brought near the elq2 eml u92x-ikectroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is*)e: lceudf2i 1 l8ot )eyvv(o 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 c)2*e l (ot8leov:1y)ifduveis the final charge on each ball?

  Charge is

  What are the units of the Coulomb c7 83 te)ockmqmonstant $k$, which appears in Coulomb's law?

  Two charged objects are separatnud6jmr o9:b8zf*1 rged by a distance d. The first charge is larger in magnrou:6mdg f* rb 8zjn19itude than the second charge.

  Sphere A carries a net charge and sp +)p sqojycie 6)6rdw3here B is neutral. They are placed near each other on an insulated table. Which statd +eq 3s6)wpyj o)ic6rement best describes the electrostatic force between them?

  Two charged objects attracm7bp z i18e8ph zb7a4yt each other with a certain force. If the charges on both objects are do7 z7 ibpmba84ey81pzhubled with no change in separation, the force between them

  Two charges are separ dwy :t as:gyz7dl*40oated by a distance d and exert mutual attractive forces of F on each other. If the charges are se0 w:7dosgd* azy4l :ytparated by a distance of d/3, what are the new mutual forces?

  Two charged objects attra5l9ztv,g5+rfn0r kvi ct each other with a force F. What happens to the force between them if5lkinrvg ,5r tf+0 vz9 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 separp6s4+)vk su d 2opmasoy99yz; ated by a distance of 1.0 m. What happens to the magnitude pzyv s2k m 6ouyda94;+p9s)os of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a disr)v7 ar zu1oq9tance of 1.0 m. What happens to the magn rrvu7z1o 9aq)itude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by nzpzhh f2 g7 rd cnt;-:x-.au+a distance of 1.0 m. What happens to the size of the force on the proton if the electron is motah-+n dr gnzfpx ;h.z:u- c27ved 0.50 m closer to the proton?

  A point charge of +Q is placed at the cenc,i :uv//-pjdv:sbwp rnjv ;r9lp9,0 6 hfu bnter 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 tbudvpws:9 u0l9 rj6pb n,-f/ ,;vpjvci rn/:hhe 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 centroid of ab orz/3f 8j+)soxv3rhn equilateral triangle. When a second charge of +Q is placrhb 3ov)+rzf8 o x3/jsed 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 is not a khvuuhin3:,ldj, q3/ vector?

  At twice the distance from a point charge1 bolkb gwxyz q1)79g0, the strength of the electric field

  Is it possible to have a 7hp2 hiley:93eu lb3izero electric field value between a negative and positive charge along thly 7h pi3u3:l9be2ihee line joining the two charges?

  Is it possible to have a zero electric field value between two positiakz8wfi8pi); 0c d krp3q s3aw(5dp6 ive charges p5d wf )0rw8ii6d3 ikp8pq3a as;kz(calong the line joining the two charges?

  Electric field lines near psitive po0wf7zl0q o1y4b:p u,.kx da g6dayzt.int charges

  The electric field sdw(x3i0wj t8 *ot g-lnhown

  Can electric field lines intersect in free s2;rhsazca g7. y1r(uupace?

  A solid block of metal in electrostab-spwu ddu s+s(8i6 1btic equilibrium is placed in a uniform electric field. Give a statement concerning the electriu(db1 b+ siss86wd-pu c field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of+7mo4te7zldw 6bknnr;p)s / o equal diameters are each givl7z noe7); rd+kp/mt4bns6 woen the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniforlt9f ddj3x*+zh ovz0et +0e8qgy,fq 7m electric field is directed straight upward. What can be said concerning the charge on the block's top surfacee*dyf q ovtgh +00 ,q+l dez7xtzf839j?

  If a conductor is indv. m/:tm k/jr electrostatic equilibrium near an electric charge

  A positive point charge is encl8h wb-lab y. wq2*bc9en2:hctosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field e lc8nb- bta9h.y*qw2 : w2cbhat a point directly above the hollow sphere has

State three properties of conductors in * ;t/8bdo9p iecj .leaotx. 2pstatic equilibrium.

State Gauss's law.

  The charge carried by one electronqj9 y75ql+nz.supx1+ r b*ben 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 +26 em*z(j rxv;c.00 mC. How many more protons than electrons does this piece of plastic have?*m;rxe6 v (zjc

  What is the charge on 1 kg of py av(/tdot +k6rotons?

  An atomic nucleus has a charge (srn c3+ln)h zof $+40e$. 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 +b7c/ypzig)8*ivvo ml9 4t fvcharge values of 2.0 and -4.0 mC, respectiovi+ m b 89y4l7c*g tvp/ivf)zvely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, an84mt b;jvls7i.l a; kdd the force between them is 1.0 N. What is the i87. ;4vbamlsl dktj; magnitude of the second charge?

  Two 1.0-C charges have a fsh (ex cq(nlf2aft84+7 6o dhnorce between them of 1.0 N. How far apart are they?

  The force between a xhq,+4 k8d ; b4ct/(yomjzjdu$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, i(w l6;vp yo4pts. t1oknitially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force b( plpt; 1os4k.twyv o6etween them?

  Three identical point charddv8 )mavu 2vrbi9- b8ges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the rig-v)ai br82udvbm8 9dvht 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 ii;jgbj4 jyu7 r cnni7wo)3d 51s 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 ay ic ;j57bug)3jorwjdn 1ni7 4nd direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are l cy l88cy:7;guaofo17bkjpk-kjwl7 ,ocated at the following positions: Q1 = 2.00 mC at x = 1.00 m;f 8kj;87kbgyoo:-cyljlwc 7ka 1 p7u, 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 q97m v-ebcy e1mu6-alis placed at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrom9-em 1 u-vlba 7ey6cqstatic 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 zz 3p2q kojl- u59l*nr= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chargn5 z3uolr2z jkpq*l9-e?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (;vcben88k4 jv 0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of vjkc8bn e4;v8 the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equ 3c.hggrjx* dh +2px*vilateral triangle which measures 30 cm on a side. What is the magnit+hj xrgd2vx*c h3.pg* ude 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 w2 f)po z*0tjdphat point, on a line between the two charges, would it be possible to place a charge of -Q such )pop2dj f0t*zthat the electrostatic force acting on it would be zero?

  A +3.0-C charge is at tde9 9.mnle+ .cka 5psihe origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so thmpil. k9s dce9e+.n5 ae net force on it is zero?

  Charge +2q is placed at the origin a( ao.zx 7y7taznd charge -q is placed at x = 2a. Where can a third p7.7taxazzo( y ositive charge +q be placed so that the force on it is zero?

  A copper penny has ao0z/ gwx:e;w7a 6.vd w0zs rp ea:qfp2 mass of 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 againstuzfhphpo*mus+;w8 /w jf:w - - the force of gravity by the attraction of a fixed pro;z /j-*fpf8:u+shphw ou- wm wton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common pogtkj u4ye3j4+ojy -6f int by nonconducting threads which are 30 cm long. Both are given identical charges, and the el 3jut-fyoeg 6y4j+k4 jectrostatic 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 +40e. Wz6 wqsywsk.b(9c6bh8 hat is the magnitude of the electric field as86(cbw .6hky w9sbq zt a distance of 1.0 m from the nucleus?

  What are the magnitude ;qvwz;j+eyll14z bi20x f 5txand direction of the electric field at a distance of 1.50 m ;wqix02zy4lvze b+t l5j 1;xf from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small testq;j2y*rjfq2p,czi . sg f35yred7l + u charge. What is the magnitude of the electric field at the locatios fyu+drp c3iry;5 g2ql *z ,2eqjjf.7n of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direq-3g p eux w-0i:diqhb4 fw pu80b8na4ction of the elect4p8 w g-bbxd04pi nu q-a3wfh0iq8e: uric field?

  A 5.0-C charge is 10 m from a small test char keh)j dlix3o12.68vftqkfx b*uc03lge. What is the magnitude of the force experienced by a 1.j eb)xu 03hfo83 1vtkd*f lix6k2qc l.0 nC charge placed at the location of the test charge?

  Two point charges each 2znl;c* t ,6eo-xxbe bhave a value of 3.0 C and are separated by a distance of 4.0 m. x eb; ,ebz 6-co2*nlxtWhat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sj-p 0xug j2ih(ktm6xl06b;0ian 6m yxtick and a -4.0 mC charge is placed at 2 06xniau tm xh00 lmj6pigkjy(6;-xb the 50 cm mark. What is the electric 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.hhl evdp:l.lb .d9w*(e 5/3byo hgdx; 0 mC charge is placed at the 50 cm mark. At what point on a lined:.v3 d ;l*xh byh9b /lepd(gw .e5loh 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.x-/c3 h qrdeyiqle pkk;)41 7a20 m. What is the magnitude of the electric field ax7hakr)y;4c3 e qp d1-li/ qekt the point midway between them?

  Three 3.0 mC charges au rx;6jsbb 2o3re at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC3;xrou j26b bs charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are ek10e r,9gfq qplaced at the corners of the square as follows: +4.0 mC ,rkg90 fe1q eqat (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 d:iyv(iye48pdfm(-bat7f1 vgfw 0-o mC when it is placed in a uniform electricf- twfbpyiedg807oa- v4(vd mi:(1 yf field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mkodi dm(*2xj (C 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 0u.vob4h oq5p i9nhl 9in an electric field of 6000 N/C pointing downward. What charge.9 bi 9540hhnuloq pvo 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 *nwbkh mw;w+6ball is placed inside a uniform electric field, and i+ nk;mb www6h*s 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 the5bc:wh q0-afsin sx- , us-u :fbkjk.2 magnitude of the electric field 5.0 cm from the sphere's a:j fs ux:bkwc,siq-u5kn--h sf. 20bsurface?

  A metal sphere of radius 2.0 cmwm -.q1nl b) d/gyua0 *uc(mjb carries a charge of 3.0 mC. What is the electric field 6.0 cm from thbnca1 dl ujy.)(m0m-q*b/guwe center of the sphere?