State the law of conservation of electric ch5 g 3sr3rp,cutarge.

  Is it possible for two negative charges to attract eplvzop+ll77 ,ach other?

  Is it possible for a positiv9ff g+4r2vov)m myhjx-(g,:-r r nwbt e and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod amue;lt xds:phr1em)-)j *y5lcquirel mu 5 lym):re)e -t*ps;xj1hds a positive charge and the silk

  A proton carries a

  The model of the atom showltuv189.7ifcwe )q cos a

  A neutral atom alwayfpgbybs/, +i3(48xgg zek0d hs has

  An atom has more electrons tha(ci,8wdn vl eg ik6--bn protons. The atom is

  Materials in which the electrons are bound very0j,xi5i d,lo( .v ttc wv/vak6 tightly to the nuclei are referred 56v t0(wk,t/iold ia.,j cvxv to as

  Materials in which the electrons are bound very loosely to the nuclei anxb t4ad)elc5s z ,v12qbt;q m(d can move(s2)bd5vxmzb ,4;qat1le tqc about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged md joo*8-ibvctz 9xq ,b,kp1 c2etal bar. The end of the metal bar fi1x , pc-2v8o kb,cqdtzj 9ob*arthest from the charged rod will be charged

  Sphere A carries a net )r)u q+ pmf0m+ :axpaypositive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is rm+)x yaupf: +)ap0mqcorrect?

  How can a negatively charged rod chj,*wo ocn)) 5s f/)/hoikuhsoarge an electroscope positively?

  An originally neutral electroscope is briefly touched with a posi d;dg;sfa mq :1rtcx+5tively charged glas xg ;as;r1q f:md+tc5ds rod. The electroscope

  An originally neutral electroscope is grounded briefly while a pohg7axk7y 5u)i ,zua1dsitively charged glass rod is held near it. After the glass rod is removed, the electrosyu x ahkuz diag)7715,cope

  A positive object touches a neutral electroscope, and the leaves separate. b)1crf; 13rwxsymb s. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?31xw) 1bmr ysrbc;fs.

  A large negatively charged object is placadw* efhmha 7+l4t 8 a(0hrt-j9n :sbled on an insulated table. A neutral metallic ball rolls straight towm9aht-(7el+wa8r0*nj:bd thh sa 4 flard 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 final charge on each ball?

  Charge is

  What are the units of thes ,t k meww7z-ahmeg*h j:j31) Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first crg-3y8mdyjt:,8mdioc,ib+ rharge is larger in magnitude than the second cha,rc yy,-irobm+j m:d dt8gi83rge.

  Sphere A carries a net charge and sphere B is hi k db.pw:e63lo9 ;fineutral. They are placed near each other on an insulated table. Which stat.k oiw:3i lp 6;hdb9efement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges on u+5 urd*pg:k7j mda2-;w dcze both objects are doubled 7jrg- ekcd;:5umdu p 2a +*wzdwith no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces of kqd;5a 9mo2bw F on each other. If the charges are separated by a distance of d/3, what are q ;5bmoa9d2kw the new mutual forces?

  Two charged objects attract each other wlsnj5 d.ux9je.m7 su+ ith a force F. What happens to the force between them if one chanjss9x7. mul eu dj+5.rge 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 separated by a distance of 1.0 m. What happens yr d)+1d3bu puto the magnitude of the force on the proton if a second elect1+b rd y)3uupdron is placed next to the first electron?

  An electron and a proton are-;brtn c vcw,tsq97 lgq5.m9v separated by a distance of 1.0 m. What happens to the m ms5c9 t-lqw,qc.g9n btv7 ;rvagnitude 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 a diste.(zny 3) 5jwmk vact 9rihy ake8:w-sh81k3eance of 1.0 m. What happens to the size of the force on the proton yh53 hswek9z cmy ei8(vr.njw 1ka)-t3ek:8aif the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is pk xhz k,3y-3(w/myvj 8t8* lo/ermwj jlaced 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 posit-/x3 zt/,j*8r3vk jhyw 8(jkom lwe myive 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 square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. Whe3rwrv6nz4pj) n 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 chpj rw )z643rnvarge of +Q placed at one of the other vertices?

  Which of the following is not a:y86j exe(yyy )wpw zdb0l/h( vector?

  At twice the distance froh49 xhyha/ 5 4s* 6h3zdpfwqmcm a point charge, the strength of the electric field

  Is it possible to have a zero electrit,zhvyuy r42/ qa wy,9c field value between a negative and positive charge along the line joining the tw ,uya4q yy2hrv/tz,w9 o charges?

  Is it possible to have a zero electric field value between s xl2w;rz 1ai0 :pift2two positive charges along the line joining the two chaslrt:ix2w 0; 2fpz1iarges?

  Electric field lines near psitive poink y4g ,w7v2cnwt charges

  The electric field shownilx;.xfwi. 9 y,mt-au un. a-dkqv3w6

  Can electric field lines intersect in e7s dxdh8-lbi (-l+-s t r07*fhrceyqfree space?

  A solid block of metal in electrostatic equilibrium is placed in 0ix ntkugbc/mh:.f) pj bs* ql01)g*na uniform electric field. Give a statement concerning the electric field in the blo f:i) sb/ n*ggnc 0*tm0lp.jqh)bxku 1ck's interior.

  If a solid metal sphere and a hollow metal sphereq ahkk9+z r59d of equal diameters are each given the same charge, the electric f+dkah r9 k5q9zield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table ins r5tjtgo4 s8sc:z9 tsd(rjx75 /jle -n7qkr2 a region where a uniform electric field is directed straight upward. What can be said cojs9q8ns 27zt5srr 7kc/sjgjt(4 de-:xt lo5rncerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrid1-;(fgejr y vum near an electric charge

  A positive point charge is enclosedgpmb, )j ikoys h.4k,uda63-z in a hollow metallic sphere that is grounded. Apu3,kj. y ),4b k6sdgoi-hm azs compared 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 /n 7em ua9tr:ceki; w4static equilibrium.

State Gauss's law.

  The charge carried b7p/jmff ,yn* xy 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. hjdw e5s4w, s.,ones: How many more protons than electrons does this pieeod:js, s5 e,4 .wswhnce of plastic have?

  What is the charge on 1 kg of pro0ig27rj jfsq (9 f3uxttons?

  An atomic nucleus hahrg t6f a6lmnke 9r 9h/ip+7k+s a charge 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 cha gk jev-,aq,b5rge values of 2.0 and -4.0 mC, respectivelyj,b ,-v ekg5qa. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force r 26(adp.ved,lpo f,gbetween them is 1.0 N. What is the magnitude of the second clvg6(,2e pfo.dard ,pharge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart/cirfs; ; uxz. are they?

  The force between a czpdf 4o-drz*x34+aw$30 \; mC$ 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.vbp7d:*lmt o40 ,vvk p0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between them?0v*vd 7kvp, 4tobm :pl

  Three identical point charges of 2.0 mC are placed on the x-axis. The f /y.7x: ue++r vzvqf5kq;a.trckl j +first charge is at the origin, the second to the right at x = 50 cm, and the third is at thrvl7/;kkyx:e c rq5+tf+ ajquf. +zv.e 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges 3 gk9f/monbzv s )nj5-are placed 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 +4.0 mC at the 100 cm mark. fv 5 s)9mnb- nojgz3k/ 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 followin k-biggti.shw1 1 va 56iao14ng 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. 4vsgo1k thw- gi1 6bii.n5 aa1 What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is plac n;d4i roxhn77m)0l phed 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 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 if7imxhnlp07); dn4h ro 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, -wadr2h p ,5/y mzjtb70.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nCdh-j2my wpaz5rtb7 /, charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0,sziutd r1/h4 nC is at (0, 0). What is the diuzr ih1,sdt4/ rection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equila40flp7 pq(u oateral triangle which measures 30 cm on a side. Whqp(740olp aufat is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whl 0y yh4538fufvdloq: ich are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting of:u0 4yldl 5oyv3h qf8n it would be zero?

  A +3.0-C charge is at +en ly1v/ftla7,kzbo k5;sp5 the 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 the net fyt7kpk5zal+s/15;f,lne v b oorce on it is zero?

  Charge +2q is placed at the origin and charge -q i vz/r 8tcri1d-s placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is z1 iv/cd -tzrr8ero?

  A copper penny has a mass of 3.0 g. A totalt f23k*ki h2-7oqiqrw 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 attraction of a xh1y0k 6-4a+wixz+zzf8wcbv0l e3 xdfixed proton some distance above it. How far above the electron is the pz x+ c4-8w0e+fzzblv w3kx6ad x1y h0iroton?

  Two 0.20-g metal spheres are hung from a common p*od 5,v m8/u+(v wnk-tfvenfh fy0u0 coint by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them5 wfvvu0-,(*f /8hfcdkmo n0tvuyen+ apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a chargom/snl) m u+9ue of +40e. What is the magnitude of the electric field at a distance of 1.0 m fr9u+ m/)olsnmu om the nucleus?

  What are the magnitude and direction of the electric field at a d5t bgsv( t9g/kistance of 1.50 m from a 50.0-nC char( tvgk tgsb59/ge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudewhe-ah:98abb sxenlzo o 98( 1 of the electric field atxb 9o:e-w1aza8o8nls h b9e(h the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the d0+c26el qpgve irection of the el6 qel2vgep0+ cectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magx w*37fsrt7f snitude of the force expersw7xf*f 3t7rs ienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separatecm +d( e)xhq fss6zv3bq08o8jd by a distance of 4.0 m. What is the ele3c( m vz q8qx68 )hjbe0s+fdsoctric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm marifhl) e 4((xhzkfm:3ok of a meter stick and a -4.0 mC charge is placed ax ( )fm43f:lo hkiezh(t the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at + gdfq0mo /z6dc1aeh2the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At ocz0f+hged 2a /d6q1mwhat 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. Wh9:s,,pat dao e zg:5x9fs0 4 tbqsw,fqat is the magnitude of the electric field at the point midway betweentqf95so9eb: 4agf: x ssatw,,,qz 0pd them?

  Three 3.0 mC charges are at the thren-9cig a jq5c: gyf6w2e corners of a square of side 0.50 m. The last corner is occupieng5ca6f 2igjy wc9-q:d by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a sideb zqx69 +y c+r/zmd2te. 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 q rt2/ +d9b zy+mxz6cemagnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it i ),vabq 1bw*dns placed in a uniform electric field. What is the magniw a *,q1vdbb)ntude of this electric field?

  A particle with a chargw7n (jxy0doqrwm .;)u e of 4.0 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 ilt9od0su- r0povxz6* k)3j scs placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended?r -c6lxtos9dszv *kouj3 0)p 0

  A foam ball of mass 0.150 g carcjpysv9 2c:l:e pf u +5h ym7a7dw,/lxries 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 magnitude and direction of the electric fieyl7aj/v9 2 sl: ,edxcwp+p5cf:7muhy ld?

  A metal sphere of radius 10 cm carrieswefgd7- : /5ki7lx4 r1ld9t0gqrx mrc a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's rgk /0lxecgr9 q w1:i d-74xfrt5d7mlsurface?

  A metal sphere of radiubit0l zxn:s: u)s sg:qcn4e,3 s 2.0 cm carries a charge of 3.0 mC. What is the electric fie3gu sz tx i:e b40sn)q,:snl:cld 6.0 cm from the center of the sphere?