State the law of conservation of e 2x19jembn /1ud cp)mblectric charge.

  Is it possible for two negative charges to attrf51vjb0px* u .pzpdp c,y5j 6xact each other?

  Is it possible for a positive and a negative charge to attract eachvnio0:l ;2b;p9 tsnh;7 wulf t other?

  A glass rod is rubbed with a piece of silk. During the process the (ff3 qwif2hb-1 v 0eaeglass rod acquires a ph 0ei( 2fewaf3b1v fq-ositive charge and the silk

  A proton carries a

  The model of the atom shows o,kgd f;dij v+a/w.d*-k :to da

  A neutral atom always hdj:3(-h wvzq jas

  An atom has more electrons than protons. j+f aydi)g (ed,+k7mtxh1)s:o tr 715 zgdrvc The atom is

  Materials in which the electrons are bound very ezaxjt5. 5 lhcc6u(z1 tightly to the nuclei are referred to h zezj65cac. l1x5tu( as

  Materials in which the electrons are bound very loosely to the nuclei and cannsys6mb3ac yl+ 0 co*9 move about freely withymnyoc9sa3+c l0b * 6sin the material are referred to as

  A negatively charged rod isfckql* tu ik;uc6 fnx9ak)-i q+; -vu1 brought near one end of an uncharged metal bar. The end oq k-iuc)u*xqf tau+ 1-; nk69l;cvkf if the metal bar farthest from the charged rod will be charged

  Sphere A carries a net posiuds b* dg 4*8xa5 ncnpwy(w gu5purl,f(6p 8q*tive 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 grounde (g85gwx la wp 4sb(cyq*6u*u 8 pp,rndfd5*und. Which statement is correct?

  How can a negatively charged rod chr .b; 8xf25,cmqiec iharge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charge*5:yjes/;7i up)gxcm: x l kfxd glass ;7f*)yp5/ucx lk xisme:g:xjrod. The electroscope

  An originally neutral electroscope isp x-/4cz -jp(9b a6hz3pcw whg grounded briefly while a positively charged glass rod is held near itbj3pa-z 9 hc z hw4wxpcg-/(p6. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and thma/ ;tsdr0cfs(li1w ( e leaves separate. Then a negative object is brought w l(s;isrcft0d a1(/m near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed 7m w*e3ho6 fy4.qktf sfpvn 69on 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 t6y nfqm s vof94kftp*w63.h 7ehe 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 Coulomb s/g-i )pf0qwy constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distan32ooz,ik u5k zce d. The first charge is larger in magnitude 2 kookziu,35zthan the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are plax ph;t7s4vb5rueu xld0)a.9q ced near each other on an insulated table. Which statement best describes the electrostatic force bvlb.ted5 uqx0rhu; 4)xa97ps etween them?

  Two charged objects attract each other with a certain force. If the yu+0 sdyf:jr1 8zkep; charges on both objects are doubled with no change in separatiyy+:8uke p;rsfz j 10don, the force between them

  Two charges are sepa5 pwso5mu*sepf5 u5 7-ury ;ghrated 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, ges;75ypwf-ou* pmuhu5 r55s what are the new mutual forces?

  Two charged objects ;git* :qs2dt z)j a7cwattract each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original value?7 :dct;zsta2*ij w )gq The force is now equal to

  An electron and a proton are separated by a distan+w gqjss1ojv14-3bn 3 p(l0tidm t*wwce of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electvt -(q0j31wg+ *w 1pwnbs4dm ijs3lotron?

  An electron and a proton are separated by a distance of 1.0 m. What happens tovtj8u2hvaq.fn1;.v* ii,wo w the magnitude of the force on the first electron if a second electron.wo wi; u a8*ftv njhqvi.12,v is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens cml7tf p3z7y2 (uzqh7 to the size of the force on the proton if the electron is moved 0.50 m clofc 7q2(htuzpzy 3lm77ser to the proton?

  A point charge of +Q is placeoh1n3v9 7x9qgwy1k jnd at the center of a square. When a second point charge of -Q is placed at one of y793knw g1vx9j ohn1 qthe 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 square?

  A point charge of +Q is placedu 8jw6v,l 9acc at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.wv ac,j 9ul8c60 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 )kom)yw :f g; i+cmq,ivector?

  At twice the distance from a point charge, the strength of the elem4.w sc9.z0vdiz- znb+hy* ta ctric field

  Is it possible to have a zero elec( ibqg57tbu o3*lmch7tric field value between a negative and positive charge alu7gimcthq5o b b*3l( 7ong the line joining the two charges?

  Is it possible to have a zero electric field vall(+)cl 3shswi05q hmsue between two positive charges alongmiw s 53h+h)0 (clqsls the line joining the two charges?

  Electric field lines near psr-jp7u-so txjft;z6 ; itive point charges

  The electric field shown+vsftzrl2 rz e,2t )-br o7k.q

  Can electric field lines intersectd3j myzs7.h3 u in free space?

  A solid block of metal in elec ryj7tze /3,fvpul .f0trostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electr , 3t.lvpyr u0e7jf/zfic field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal dcggf;ev n97 8giameters are each given the same charge, the electric field (E) midwayvnfe7g8 9g;cg between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unb4z wn)qg)/f j7ufeagt2r *r2 iform electric field is directed straight upward. What czaggbrj e2f wf)4n/r ut27)*qan be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chargdqksyrjq,8 t+z:0 qnwh fv3h8i4 m7+qe

  A positive point charge is enclosed in a hd6xxtcsf )e*. ollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electrtx . xdec*fs6)ic field at a point directly above the hollow sphere has

State three properties of conductors in static u)yom/ u;my3 i az7b+8x sf.mmequilibrium.

State Gauss's law.

  The charge carried by one eico0 )i(e ypv)5qhi l.b; es8tlectron 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 many morg64omqu8 p3yse protons than electrons does this piece of oypqg34s6 m8 uplastic have?

  What is the charge on 1 kq:9kq8cbv;t j xsf/y5q8kap -g of protons?

  An atomic nucleus has a chswr70g r-u8uqz-r4:ht vd u l;arge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated bys3fikx:u ho+ p0zw;e 0 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of tu z0:f sexpw0h;+oi3khe electric force between them?

  A 1.0-C charge is 15 m from a second charge, aba32dy +(tke-v khzcsa /7rd0 o7- uppfj4fu,nd the force between them is 1.0 N. What is the magni-kud(oet2pchk asar +/ bdj3f7,y-7v4zfp0utude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are th (4el)uvuphgb31eou-ey?

  The force between a -zjar8vgvq;6j02zvv4ldxj3 / -n plh) f,btr$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exlc1 :d/ t8vu. g fcx0jelj+rs+perience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the elec1v 8f.cu +/ljl drx+:tsgj 0ectric force between them?

  Three identical point charges of 2.0 mC are p 5(ezt;/cgmtr3w58; 7foszsmmiyi )olaced on the x-axis. The first 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 the magnitude and direction of the electrostatic force which acts on tht/m 8f3wo5;7otycir( )em igsszm; 5ze charge at the origin?

  Three point charges are placed on the x-axyu*ic5 ,bdcu:is. 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. What are the magnitude and direction of the electrostatic force which acts uu cy:,icb*5d on the charge at the origin?

  Three point charges are located at tj6b23n1 18u e;qknlce ,i yrzdhe following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -iyrnleu b1cjz; 6 2 k31dqne8,5.00 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 cevx8 xbvt( 4)cznter of a square, and a second point charge of -Q is plac c)4 zv(bxvtx8ed 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 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 = 5.0 nC isfjvg 7v(7-v:a i3 ny./owl yqt41 qozx at (0, 0). What is the magnitude of the net force on the 5.0 nC charw3 4z.ofvn1vo/iqlx( ga7 yjqt-v7:yge?

  Q1 = 6.0 nC is at (0.39jho(; eiy.het5y l2a0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What isa j(yt92oh;5e .eyilh the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertyjp6ad,tao8w 2z; vu2 ices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any onew2;p,av uza8 ojd62yt of the charges?

  Consider point charges of +Q and +4Q, which art) /snyhhh.bh)*/ jpde 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 electrosta/ . s/)thhpjn*ybdh) htic force acting on it would be zero?

  A +3.0-C charge is at the origin and+ ine5ma-1nalt2fja733f z1w nm t x;d a +9.0-C charge is at x = 4.0 m. Where on the x-axis tn + 23;5f1jdan zlxm 3aewai71fmnt- can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at xa: oif7 8j gq vonje:;c)6ixwr8+1azz = 2a. Where can a third positive ca:) :cxizvf 8zg+rjw68 ; oje1 ainoq7harge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g/e e zlic0-neq;rkr(c399z f u. 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 thgqk p9.ptr:.yl18fiee force of gravity by the attraction of a fixed proton some distance above it. How far aboverp y 8.pei.l:f1qtgk9 the electron is the proton?

  Two 0.20-g metal spheres arek (s gnb,d2se,pday .0a+a z)v hung from a common point by nonconducting threads which are 30 cm long. Both are gds agkd.b y)n+0z, v,e(aaps2iven identical charges, 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 charge of +40e. What is the mag ck ut1/1y4dx/2gjolb +bwq 9vnitude of the electric field at a distance of 1.0 m f 4+ d/2t1vubb y/jk1c9wlqx gorom the nucleus?

  What are the magnitude and direction of the electric field at a distance of ya +hlss ,4sj61.50 m from a sjy6ss +4la ,h50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. ph zd1qn7g) :o; yqoo;What is the magnitude of the electric field at the location of the test cha;pndgy h7q: oo)oq;z1 rge?

  A 5.0-C charge is 10 m from a small tz:nf le.5/e ew/ugcg (est charge. What is the direction of the electric fneczgwf u e:/lg/( 5e.ield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnituzh4)aa 4hsx/i de of the force experienced by a 1.0 nC charge placed at the location of the tes4ai/ 4h ahzs)xt charge?

  Two point charges each have a value of 3.0 C and are separa :ol :)fvrn(l1sd yp)eb:iy7 eted by a distance of 4.0 m. What is the electric field at a point midway between the two c)dsv(elo1:n fl)pry: yi7:beharges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a - ,zqb kwq2/cu9w9tx9u9f fu s5i9o1ea4.0 mC charge is placeduz29q5 iuf t u91aeqwsfbx9/ o9c9,wk at 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 -4.0 mC chhoevj i2c9vq h-,. 3naarge is placed at the 50 cm mark. At what point on a line joining the two chargeeo v9chvj.32- ,q nahis is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are tha52wugf6 2d placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway buf2 d5a2 tgw6hetween them?

  Three 3.0 mC charges are kenn66fsk**kgb/h tmyn 9; :kat the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of tnnfnbg 9;t:k 6*k/km*seyk6 hhe square.

  Consider a square which is 1.0 m on a sides frj-0dn j)mrk.z2* e. Charges are placed at the corners of the squars02f)er zj.n-dk *rmj e 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 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 5sz3h .g zp-cke.jnv+ co)yo6is placed in a uniform electric field. What is the magnitude of this g5-h6zc +vp3jn)szo.e ocyk .electric field?

  A particle with a charge of 4.0 mC hf, jc m7bxih -92mc:ypas 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 in an electric fyq ;o+n1 v(2arvz8)g whkl glp+ob;,field of 6000 N/C pointing downward. What charge must be placed on the ball for if;o 8pl2l y; (h)wvz,kqb+1g+ agnr vot to be suspended?

  A foam ball of mass 0.150 g carries a ce)8.dmbngyyi-8* g rl2(f 53axe visfharge 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 te.)any f*g - x3(8ii2 rmebyvlsfd8g5he electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magp0zfxc 45o9l hnitude of the electric field 5.0 cm from the spherzchp 0 f9l4o5xe's surface?

  A metal sphere of radius 2.0 cm carg:ln r6kb z(13s xa/brries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of thsxb6(n3a /:rzkr gl1be sphere?