State the law of conservation of electric c3/ zuoz5z eqj0harge.

  Is it possible for two negative cha -wi (xcgw6cr0rges to attract each other?

  Is it possible for a positive and a negative charge to attract eaog *fnb: p78csch other?

  A glass rod is rubbed with a piece offi3y,co1hrlvgf* 5p 4 silk. During the process the glass rod acquires a positifo 1l v*yg5ir34,cpfhve charge and the silk

  A proton carries a

  The model of the atom shonr a yzp+t)n9ic(5+nuws a

  A neutral atom alwaysuz54ic yop2 8p has

  An atom has more electrons than protons )s+-4wf objra. The atom is

  Materials in which the electrons are bound very tightly t.l rip,mj,:e8pae ucg.0rc u;o the nuclei are referrpje. ergu;r, pl08 caumc,i:.ed to as

  Materials in which the electrons arex+idk*qxfi): xli(xb8 i1;ay bound very loosely to the nuclei and can move about freely xif )x+ (1qklia ;xyi8x*i:dbwithin the material are referred to as

  A negatively charged rod is brought near one end of an unchargedqrf vg ,dz3nl5)g0s yo fj1jc8gcn046 metal bar. The end of the metal bar farthest fromg ,4 l8cg300fn yf vdrs)c jgno5q61zj the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They i.e1rxlci+ sd(kqfzt;,vq(5)t6( pkiuyw 2lare placed near each other on an insulated table. Sphere B is brieflyq+(t u6 kv .qwpre,5 (k(sil ; 2xlidcizty1)f touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscomu 3f/ ccbd04hnb 9jj5pe positively?

  An originally neutral electroscope is brr 5keuzkmcv(5 5wl2; ziefly touched with a positively charged glass rod. The e(krkmue5c5 zl z25vw;lectroscope

  An originally neutral electroscope is grounded briefly while a 2vys4qff ,n8* svcwslvk 0*w/positively charged glass rod is held near it. After the glass rodqwfky4,2 cl *8/vws*fssvv n 0 is removed, the electroscope

  A positive object touches a neutra i1bna4e5zh ;jl electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leh;z1jib a4en5aves?

  A large negatively charged objec;zld ao +iuopr bur8qu20w19./d*wnrt is placed on an insulated table. A neutral metallic ball rolls stradu.1olazb8 qu pwr;9i/own+0 d*rur2ight 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 is the final charge on each ball?

  Charge is

  What are the units of the Cy :xaz 8g av(f,xwq/r,: *mwygoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a taenfh*6v7 m*distance d. The first charge is larger in magnitude that v*h7afe*m6 nn the second charge.

  Sphere A carries a net charge anz15nh0 ep kln8d sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the el1pk0z e l8nh5nectrostatic force between them?

  Two charged objects attract each other1tb 3,cje9 n*v/obm k k jw)bl9nyb:4c with a certain force. If the charges on both objects are doubled with no c:ke 9 t 14ob9jcjymnc) nb* wk3blb/,vhange in separation, the force between them

  Two charges are separated by a distance d and exer uf6ml/3. y yd*nbf30tr4st imq wb+ ;lhdm.n3t mutual attractive forces of F on each other. If the charges are separated m3.mbftul*fnhmrl6t./ yqw;ib 4d n3ds 0y+3 by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eacy/:33oz5n(c rdh j2z 5sknsubh 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 cent5y2znn sh r:uzksjo( /bc353ders is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are sepks7ytagz4,k : 9g :xtc;5rqmx,i4auparated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is pl7 t cpgym4,r:5gitks 9 xzaa: q,4k;xuaced next to the first electron?

  An electron and a proton agw/ p 3r5sdme3re separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a sr w3pm/ed5g3s econd electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What hapkw2vt8h:ww 7r6cr; vdpens to the size of the force on the proton if t6v2w vwr8h dt:kwr7 ;che electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of av. ,upaueiz 8, square. When a second point charge of -Q isep,v, .aiuuz8 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 square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. Whe-l(v.fwl4zyb cp2z j: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 centpv :(jw-z 4.ylbzfl2c er charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not aijvr ; qwem)(6 vector?

  At twice the distance from a point charge, tnwj8rxdc 3cn5a ug+41 he strength of the electric field

  Is it possible to have a zero electric field value bl7hkzt c1bw )svsfl4x:r c/. py( (4kuetween a negative and positive charge alzuxk:lh c yp r4(lws7s (ct/1. k4fbv)ong the line joining the two charges?

  Is it possible to have a zero electcte; 35 .2.i vwoo aua.yef/cpric field value between two positive charges along t tyia/aeo f2ov.epuw 3;c .c.5he line joining the two charges?

  Electric field lines near psitive poi9; c,7bt z.1rwziq4 gkzu9:4l1 -hyrvfnwgsmnt charges

  The electric field show6q/:mu5 tbme7of.pwjs v - ,sw4sl4xwn

  Can electric field lines intersect in fr srtaute2p/**amr /s ;ee space?

  A solid block of metal in electrostatic equi x8bkzm n ;2+snu,kofip4 o0q 7.i7mtqlibrium is placed in a uniform electric field. Give a statement concernin;ms82 7iqnpbk+i7mt 4o,.qf0okx nzu g the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are ean ;b (h.hjr:+paedyo( ch given the same charge, the electric field+jh(;rh(dnp yeoa:b . (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform e06qh2jjgh:+dq* s7wt4tb ya blectric field is directed straight upward. What can be said cbybj42 s +:tjwhtdh q 7a0q6g*oncerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chargeaa*6 uvc:2b:j b sulupbg5t/0

  A positive point charge idbk0;s0 r fr5l:.ioqns enclosed in a hollow metallic sphere that is grounded. As compalior qrkb.s0:f0 nd5;red 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 stati hzaits93b-u3x m88 bec equilibrium.

State Gauss's law.

  The charge carried by )h0vwqwl;l xnlbhe7lj( 5 .n-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 l51z/hz:np(tjmm m a: rwp*:* b.p raf+2.00 mC. How many more protons than electrons does this piece of prjlh mp1aa:*pf m/n(:.m:tz5b zpw *rlastic have?

  What is the charge on 1 kg oj9xn).r;7 co ynfor jbx:eooo3 -y7,hf protons?

  An atomic nucleus has a char wl 68tefkb*asbzvd4ini0, *9ge 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,uj bgk ;j 8n0k 6:r )d8gfmm6fby*sq-x respectively. What is the magnitude of the elec g86:0qjmx 6nyfrk gfdku ) *b;8s-mjbtric force between them?

  A 1.0-C charge is 15 m fromw4d -zo:m bq2 vn:/pjh a second charge, and the force between them is 1.0 N. What is the magnitude of tv:p4ow/qzbn j:m- d2hhe second charge?

  Two 1.0-C charges have a force between them of 1.0 N. 67 kmi8 7(ce pg2k,9 ujoy0drc*knhecHow far apart are they?

  The force between a zljx8gc9b/x,15 bl4ym 3k fd q$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm a a;x-k1vnk;tw part, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric forav -1;k w;nxtkce between them?

  Three identical point cha d8c1eir(d j1prges of 2.0 mC are placed 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 a1c i8r (dp1ejdre 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 placed at w5m7k j 24tfrgthe origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark. What j5rk7 4fgtm w2are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following /u r/oubq /d3wi uza88positions: 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 th8ur/uqao3zu/ iwdb 8/ e 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a seco):rjvzy) 8am knd 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)8)r z yam:vkj 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); Q3g1qq : cmxtvk8s,kq *s oi167l = 5.0 nC is at (0, 0). What is 7ogsc1 m,qiq6t:ql8s*xk 1kvthe magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);cptr. 7b+ jet qc+j6b2 Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the d7b.qjrcb6 e+2 p jtct+irection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at tj,l qskfgi e;ji v-y-2j:88mk he vertices of an equilateral triangle which measures 30 cm on a side. g;skeiv ,8lj:kf-im j2q 8j-y 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 3.0 m. At bf5,w+ v )pdxkwhat point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostaticdf,p+)vw5 b kx force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C chargegta :b.xldi;7 is at x = 4.0 m. Where on the x-axis can a third char7;it .lxb:dag ge be placed so the net force on it is zero?

  Charge +2q is placed at the origin a , gfr;v,6 ,zyr3eif 50qpyewknd charge -q is placed at x = 2a. Where can a third positive cha3ke,;f 0rqy r,i5,w ez fpyvg6rge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3./zcrj m-9 j qa3q40rfd0 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 a57o8m p23 sl fb9 yfqn88-iirn+ dw:m9o ljtkxgainst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the proton?i5f k88ind 7jy t-2n:3b+99romml posw q8lx f

  Two 0.20-g metal spheres are hung from3r qj- *lgkf8y a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsi y3 klrjq-*8fgon 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 magnitude ofosfy / 8k2)ndhpt fdej5:*g7 f the electric field at a di )/n2f7:*sef5ghp8fdk j tdoystance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance oz(6yc1z) by2) chfuy)mqgke4 f 1.50 m from a )uc1)yq2e myfchk)gy6 zzb 4(50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the ms s23/7bg;u ioaszfg1zv 7j* jagnitude of the ezg1j7/3 gf7*bavs zo s2u;sijlectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of 9hhg 6m8k4d+bp6saap the elechp a6dp+4 g8k h9b6msatric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitumzul0e aa v;: ;cz2n8hde of the force experienced by a 1.0 nC0lzmv n8z;e2ah;cau : charge placed at the location of the test charge?

  Two point charges each have a(meu*q utp*n xs7 qzb 8df-5;n value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midz5- um7uf* qnp;dx*tqs8nb e(way between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter st(vs5 s1)r8uczp5kj bf ick and a -4.0 mC charge is placed at the 50 cm mark. What is the elecbk(j51sz)fu r c 5ps8vtric field at the 30 cm mark?

  A 5.0-mC charge is p0bk m-u z00btklaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what pot0 ub0z bkkm-0int on a line joining the two charges is the electric field zero?

  Two point charges of-+a n 2ath7 ob0.j 99igsvnfik +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitudsaig79n2 .9btoin0+va h -k fje of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a7qyq tz:k oi;5qns0u 19n zzqr1v0c; f square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric 0;vn1zz;qkuqqo f0 s5yrit1z 9:7c nqfield at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are pl* tj rcxfj,4f5imrk46aced 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 magnitude o64t jkfmr ,ic4jfrx*5f 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 un309 35df8srdzhl oe 8lbjw1wjiform electric field. 1l0 jf 9lhjo335wb8ws ze8rdd What is the magnitude of this electric field?

  A particle with a charge oq2gun8kdm / *sf 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 is placed in an electric field of 60 v jvt+q p7e +fzpmhxbi (k10t3h-3+bb00 N/C pointing downward. What charge must be placed on the ba3 0bxeb zqhv3hp( 17k+v+bm tp-tijf+ll for it to be suspended?

  A foam ball of mass 0.150 g carries a g*sia*6ckgd *6: fsx ycharge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended agai6x:gc**ks y 6iads* fgnst 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 the magntqi5y6 +n3bkvitude of the elec t36+b i5yvqkntric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What ,.d1 * c/ecq5lg btqftx8hgz. is the electric field 6.0 cm from the centeq, 5/dc*cb hglfg1qzx 8. tt.er of the sphere?