State the law of conservation of electrympcjq/rv.*tqs hx ,a8t 4z6b ol359 ric charge.

  Is it possible for two negative charges to attract each othero b18 0s0xjhqszda, e)?

  Is it possible for a positive and a nega8 6d1 8xrtpliative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass dkqqv eryz6 v3lg(4o/os8 5- orod acquires a positive cha5sqlvk v68 gr deo/(yo3 -q4ozrge and the silk

  A proton carries a

  The model of the atom sh/nef1bk 4e: ypows a

  A neutral atom always +xm,2r 4rff :nibegj m4 am.;vhas

  An atom has more electrons than provyzfo p(bhq):-cqy , 2tons. The atom is

  Materials in which the elq uoz46zs;gv 7ectrons are bound very tightly to the nuclei are referred g4;suozzvq 7 6to as

  Materials in which the electrons are bound very loosely to th qo uv/ysqy)d: 4-h3oqe nuclei and can move about freely within the material:3u 4 ohodvqy/-)q sqy are referred to as

  A negatively charged rod is brought near one end of an uncharged metal ba zxr822xhew*v)7kpbx 6 d c:dir. The end of the metal bar farc:dwe2dh)8 zki*bv2 xx 6 xr7pthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are p05-e6k3b s/qexu.slot dkvhr)zl.c(d4 t*owlaced near each other on an insulated table. Sphere B is briefly ( klhc*ex.w esl -6.3t zod0sb)drvqut4/ko5touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elecu :73zli :fqkqtroscope positively?

  An originally neutral electroscope isj 8c:ay/lx66j+aau3 wq7wayeb cs 23u briefly touched with a positively charged glass rod. The electra3:y b3lc +uej6w8u27 6/ jacwxaqy saoscope

  An originally neutral electroscope is grounded bbv5glyah ruj )caz vlw9um1 ,:-n.4l)riefly while a positively charged glass rod is held nh 1vl: vz bwncm)ljar5. ) 9y-lu,uag4ear it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and thv(tldv2 +am9ze leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the lem9zvld(+ta 2 vaves?

  A large negatively charged object is w/ope.7d rzgjep ;wr+0 v,df 4placed 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 egrzd.e/ojv+dw; 0pr 7 pwf4,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 cor duc/p5s/3z gnstant $k$, which appears in Coulomb's law?

  Two charged objects ar- yh 1(f.b43yzplrzl ke separated by a distance d. The first charge is larger in magnitude than the second chf .1ky(lb ylrz4p3z -harge.

  Sphere A carries a net charge and sphere B is nwdgmik2q,g rjv7rc27) . o9wt eutral. They are placed near each other on an insulated table. Which statement best describes tt ,dmk)cr79wqiw g22 .oj7gvrhe electrostatic force between them?

  Two charged objects attract each other with a certain force. If q 0k,c:y/p: g mdadx08 qt5ysfthe charges on both objects are doubled with no change in d5:st/ q8 0akqfxmp :d,yy0gcseparation, the force between them

  Two charges are sepaa4sp/*qf 3kl9h hyn)z rated by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutuy)/9qzh 4aphf lk*ns3al forces?

  Two charged objects attract each other with a force F. What happens t:kr0a a4(ub1d itgh2 pa3k9cb o the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their ceb4 :g13kda92iar( buaphc0k tnters is reduced to one-fourth its original value? The force is now equal to

  An electron and a prot6x8ts,mnjd6gxlgh 1 -on are separated by a distance of 1.0 m. What happens to th-8j 6t 1dmn6sh gl,gxxe magnitude 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 distamr5-rsgd1* 3eiskn i+ nce of 1.0 m. What happens to the magns3-r 51 iik ersgn+md*itude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are)azjaq /4/)end , jwdh 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 closer to the j/n)jq)a, 4dahd /zweproton?

  A point charge of +Q is placed at the center of a square. Wh;bvdyqs 1a/ yulwqs0* e .;7jpen 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 charge at the center of the squw1sap7e qus*lqv/j ; .yb0 d;yare?

  A point charge of +Q is placed at the centroid of an;qojf+m-neo3 x - lv;v equilateral triangle. 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 dueoxj +-q; en-v v3lm;fo to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vector? nf njr*i7u 5lb(fu3lg7rf1r ) 5n)drz

  At twice the distance 5p xf+1*yri-e r6o qutfrom a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative atpi 8seiz hw0(y29 me+nd positivepzw +h(est8 9miy0ei2 charge along the line joining the two charges?

  Is it possible to hav.+ p(6fkf4jg9cm3uuq: hej e we a zero electric field value between two positive charges along theeh6e.(93u cq+k jf fw pj4mgu: line joining the two charges?

  Electric field lines near psitive point chargesiapc 0s *6-e8cuydwtbhmv 2:2q,jlcq u(e ;g*

  The electric field show)lf83ve , dtwdn

  Can electric field linesv36-;z n b mhou wx0tmue4:5wf intersect in free space?

  A solid block of metal in electrostatic equilibrium is pl- ,0e)gz7qna .qps.opjs 0bij :x.gxz aced in a uniform electric fip:qnesa .)o.xzjbi sq,0 jz g. gpx-70eld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow cd /uoa0 h2/sgmetal sphere of equal diameters are each given the same charge, theh sdg ouc/a2/0 electric field (E) midway between the center and the surface is

  A cubic block of aluminum rt g hqh, gj+f9e6zb4 u 3xtr44r4wehm-ests on a wooden table in a region where a uniform electric fiel -uhxqrh 4je+zbr43e6ttg4 g wf9,4m hd is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric odubt0c+ ila;, 3 opx9y,(foxcharge

  A positive point charge is enclosed in a hollow metallic sphere thata4t)x w-.-4wd glh60qo bxvmb is grounded. As 0-x awhb)t4gl4 bx w6v-odq. mcompared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in sta9bev2:fqzye j) o -z0jt( m6qvtic equilibrium.

State Gauss's law.

  The charge carried by onp9n3 y3sszmnr)6fo 2ye 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 3p+wdriz d ;0lw,qc qrokik0h7 6v5/y many more protons than electrons does this piece of orr/ pliyd kqwzvw 0,7 c5i;0d36khq +plastic have?

  What is the charge on 1 k( 04ncl e-qlrr6)r)q6apmyexg of protons?

  An atomic nucleus has a charge hqu l88xst:(e.yludus6 - m 6c6ubpz1of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm,8*jo+cm+m7n b.r rote,d x)il have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric il7o++rtem,* )jn x.ocdrm8b force between them?

  A 1.0-C charge is 15 m from a second charge, an, m 2gemunvl(4d the force between them is 1.0 N. What is the magnitude o(glm 4,n2uv emf the second charge?

  Two 1.0-C charges havnfd:vk kp kb 4*(m3e:v lp31mce a force between them of 1.0 N. How far apart are they?

  The force between a ,-gtz5q2nzyql ,a 74( cb zqzm$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N forp*6wxxo i (m/y;le;cjce. If they are moved to a new separation of 8.0 cm, what is the electric f6meil* j /owcx y;p;x(orce between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fcszw+ .s+zne wdw7w jpnb+60 2irst charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. What are twzj.w6ess70w b nzc ++nw+pd 2he 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 p5uc2r: qc) -*paflofql oq.l 1laced 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 ofa-: cf)qof rq5c p2u*ql.lo1l the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the foll+:3 ev v 2hpgk*ly+iwqowing 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. gi2 yw+khp3 ql+ ev*:v What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is plac.9hg 9hmwd7smm ci)3ued at the center of a square, and a second point charge of -Q is placed at the uppec hsu9hm73d i) wg9m.mr-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 lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q 48c+ty2kyslc 3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charg y28ls+y4t ccke?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nCq 5vbwdbipbx dez08o,f-(o/+ is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net f ex(b+0,8vd d- oo/zibbp5qwforce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed7 7er5ihbjylt q8 47ubnk7:xf at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic forc5b7:kf n7eb h7y q4 uijt8xl7re which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what poig/qre5, m d4ndf: k5gdnt, on a line between the two charges, would d egf4, g5kmr5qd: /dnit 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 rtve6 - ewe;h/the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a thirdrhvt6 /;-ew ee charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q9tf1 a+a :,ih:hwvobw is placed at x = 2a. Where can a t :tiw a+9wafvhho1 b,:hird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totah8 al2hr9r7+)k8(f7c 8xzbbmtif x mrl 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 aiqe)l7w/eb.wagk;- u gainst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the p.aew i)7l /k be-wgqu;roton?

  Two 0.20-g metal spheres are h z:s wz;cv9im;)qsn) xung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle b:;sz vz)iq mwxnc ;s)9etween the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e.d ug0+ejeb) d) What is the magnitude of the electric fi j0+eeu) dgb)deld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distanc)agky- 9o vuy+e of 1.50 m from a 509 avgy+y)ko u-.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is tha:pho;i q.a+ amjyj-wk:,bw 6e magnitude of the electric field at the location of the w oa:pa jjm, +:i;b6 wqah.k-ytest charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of tgh,1;dm ,z hgcck3(:jl z 5,tw( vigpthe e:3l1wtc5 kcdmt ;hh,g(z, gj v,g (izplectric field?

  A 5.0-C charge is 10 m from a small tes ,xhg.ar1b8f +znv kcl wi*-.nt charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the .1.whnz8*cl +ng,ba fv-ki rxtest charge?

  Two point charges each have a value of 3.0 .j(qf48uq, i -lmwuhcC and are separated by a distance of 4.0 m. What is the electric field at a point m8q,c4(mf q.ilwhu-u jidway between the two charges?

  A 5.0-mC charge is placed at the 0 cm marjzw/2y48pcp 8znx 1 svk of a meter stick and a -4.0 mC charge is placed at the 50 cm mar2 nz8pjcy/vwsz1xp 84 k. 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 -4.0 e6k- u:7oxetnwe n) 5wmC charge is placed at the 50 cm mark. At wha -onw5):6xuee7n ekwtt 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 = 0.202a3 yd0ir5rart1i t9m m. What is the magnitude of the electri9 a0d5t3yi12rarit mrc field at the point midway between them?

  Three 3.0 mC chargesnkc:0p:hqs v: are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the elect:n:qc0s pvkh:ric field at the center of the square.

  Consider a square which is 1.0 h. +7bjvmy5ip .4kne1l wnmrhcr+8z ,m on a side. Charges are placed at the corners of the square as follop+iymk rv n4,rc n l1+wem.zhj.58h7bws: +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 magnitude 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 elexxv;)av . tgiq ;cy;-tctric field. What is the ma a;xy.vvig;c-qt;)txgnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of g1j/qjhv* 7j k1n0 cbf$5.0 \times 10^{-3} \; kg$. 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 electrb,rh 9b4 ;ccn 9gk1oxdic field of 6000 N/C pointing downward. What charge must be 1 k9,rh;cd9nc4o bgxb placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g caobed qm-66t0-kaj, 2qzf4lrcrries a 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 magnitf4qd z-e2l6j qtoa6- mrk,b0cude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge 31t -i*+htvlc x xtuvq 2tw*:sof +2.0 mC. What is the magnitude of the electric field 5.0 cm from thx**:v2u stilc t-vhw + t13tqxe sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elect. 5 bpvp.h,6+b zaedvuric field 6phue zd.+ pa. vv6b5b,.0 cm from the center of the sphere?