State the law of conservation of electric lpyv8 tlvf 1rn6c0-v 0charge.

  Is it possible for two negative cls031mlfp m8) xkr 6pgharges to attract each other?

  Is it possible for a positive and a negative charge to attract.int 92 5dfth.bcln f0 each other?

  A glass rod is rubbed with a piece of silk. r7h9;nu i3/xwj dza2i During the process the glass rod acquires a positive charge an3harj xi z; 2wdu9in7/d the silk

  A proton carries a

  The model of the atom shows ih4jio9wo tx xr8;99h a

  A neutral atom always1f8kev ) ,; g uwmnoypij+p5;x has

  An atom has more electrons than protonjkas7/,l; j.b+gqlrvsk)w 3xs. The atom is

  Materials in which the electrons are bound very tightly to the.gno8h6 9dc e;b5uxcwgt )tfg ub;; *t nuclei are referred t9)to6 8c;c g;td*.5 bgth nu;buxgf ewo as

  Materials in which the electrons are bound very loosely to the nuclei and i/ak)j5r zu t)k 1fv8ucan move about f)tf/rjkkz 8 ua)v5iu1reely within the material are referred to as

  A negatively charged rod is brought neaeq3u8o ,d2yr sd xg,4qr one end of an uncharged metal bar. The end of the metal bar farthest g 4qxu82o,d3yrq ,dsefrom the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral 0+9duqpkp7ovgv(5o q. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that isqq7pg vdk(5o u9+0vop grounded. Which statement is correct?

  How can a negatively chargblq.xwehj7m-t 8jr*nz )sg/;ed rod charge an electroscope positively?

  An originally neutral electroscs, lxfn27a8i zwva2+ )0qyxtcope is briefly touched with a positively charged glass rod. The electrosyzfn 0vxaac s78qx itlw)22,+cope

  An originally neutral electroscope is g hiiz;rnh; (x,ot.4w8 sjlr0b rounded briefly while a positively charged grrx ztil(b4jo h;n .s8,h0wi;lass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leavekgits)m1 i,z:* y7z ses separate. Then a negative object is brought near the 1eiz,i zk7yt*s )m:gselectroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutr8w4.xpn 3 uqsb5mz fl4al metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the lb.n8xqf zms5u 3w4 p4path 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 Coulomb constaq27f54d2 6azm nrenufph j0/ hnt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chaudtv5ro) + gc+6-pjynw*e 8mfrge is larger in magnitu8+ger n *d5yov-u tmf)p6+jcwde than the second charge.

  Sphere A carries a net charge and sphere B is neutrals jfv-+ 1zvhxlb+-c-4q6uo hx. They are placed near each other on an insulafo-j-hs x ++bc-uxqlz vvh641 ted table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargese2 89 1nmbeacs on both objects are doubled with no change in 1 ebnc8sema2 9separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive dnjiw e847*wa5 yy j.mforces of F on each other. If the charges are separated by a distance of d/3, what are the min5y4 j8w.*j7 eay wdnew mutual forces?

  Two charged objects attract each other with a force F. What happens tolco)//r,kj b y the force between them if one charge is doubled, the other charge is tripled, and the/)/,rjlkyo c b 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. Whatt8o52m84zd 3+fsqtd y. pttsf happens to the magnitude of the force on the proton if a second electron is placed next to thet52pf.8 s+ dtf qodz4tm8sty3 first electron?

  An electron and a proton are separated by a distance of 1.0 m. 6(2y1b3qz ty . zb2dgdt;ca tr What happens to the magnitude of the force on the first electron if 2d6(gy2rbd. t31qz actzy;b ta second electron is placed next to the proton?

  An electron and a proton are separated 47q6s joijdranuozj x-5+ 4a:by a distance of 1.0 m. What happens to the size of the force on the proton if the electjd4s-4aqa+oi5un:z 6jj x o7rron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a secon0g d/zqp4pfj q8zg)g ,d point charge of -Q is placed at one of the square's corners, it is observed that an electj/gz,p8q gzp )d4qfg0 rostatic 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 equi n2 ca.nnc9by tf/ow1aq-x3-zlateral triangle. When a second charge of +Q is placed at one2a9 xcz-w-ta1qbn/oynnc .3f 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 vectovaulx83+ c ;nnr?

  At twice the distance from ai3gu2j-,h/z,mj/h. ns 9vm+rn3 q o;rnqmoft point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and positipzm.g5 l)9qjn9-nps ozoj3r;a 17wpi ve charge aloprp)jz 73alsn i 1nq9;.mj-ow5z o9 pgng the line joining the two charges?

  Is it possible to have a zero electric ftt7 r ;4z2lurz3oo0yqnwyw 17ield value between two positive charges along the line joining3u oqyzo1twwt2n;047 z7ryr l the two charges?

  Electric field lines near psitive point chargnvc22onsi:d(c 3hcc1 es

  The electric field sj7i(gvdsg 2a5m p -d)ahown

  Can electric field lines int* b0kcrz a*a7wersect in free space?

  A solid block of metal in lo g+j-q+bkh4iw(: d eelectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the o:+ hge-lqbj+4i kwd( block's interior.

  If a solid metal sphere and a h0ph6 ff k33rjhmc*:nx ollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surc :r*0hhx6n3m3j fk pfface is

  A cubic block of aluminum rests on a wooden table in a region w .(8mra8mx7y+tntrl hhere a uniform electric field is directed straight upward. What can be said concerning the charge on the 8r(xrtm.lyn tahm+8 7block's top surface?

  If a conductor is in electrostatic equilibrh.t6xmo lo f4f4, yh3g v9kql/ium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere thzjobp-d*5ue34bim3- f tp g kt1 eo9:xat is grounded. As compared to the case without the hollow sphere, the 14zj *bot 3ft e5bip m -9ogupe3dx:-kelectric field at a point directly above the hollow sphere has

State three properties of conductorso8 p -phtf/na) in static equilibrium.

State Gauss's law.

  The charge carried by one(r(4yilaocc, 9nhn:65l xvi y 7 f+kca 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 many more protons thanhs4lmx9 m.yua5mvo( + ro+q 5h electm5 vylh4muo+a9 rxoq( s5+h.mrons does this piece of plastic have?

  What is the charge on 1 kg of proto4jxx zgz/pf(-ns?

  An atomic nucleus has a charge jzq+hwbl6( ener7u wd 5-3l6jof $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, fk :2ta+h5 qcnhave charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the el:knfq at 5+2hcectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwind2lq290z8 w gmr ;b,asjx 6qeen them is 1.0 N. What is t qn qx0bi2 zm,82r;galw dj69she magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are:l/t np pz2)c/ 8(pcypiyf1 4wwd,qff they?

  The force between a h qxl*;suk yzz y/wbs+p,4j;,$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart,+ dc/gv*9 nstv experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between +st /vng cd*9vthem?

  Three identical point charges of 2.0 d(sx .frtn *x,z+-py xmC are placed on the x-axis. The first charge is at the origin, the second to the*x(-x fp.ysnd +,trxz 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 the charge at the origin?

  Three point charges are placed on th9u3;3fyf bd0d,qh,/w w;;fxl fse2sn fg g+w ne x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right+;s n d;wgg,/fsyfwnb0u fhx , ldw2q3f; f39e 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 on the charge at the origin?

  Three point charges are located at the following posiba l20xrs3 bqq1;, cb9j wsgm5tions: 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 the 3sqbc,a1xb2 j3 l9 mswr; qg05b.00-mC charge?

  A point charge of +Q is placed at the cent d y7ce lsai(2i) t9w6 mnnxag1bc6d,:er 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 thet1 by m d):ai97l,( sx aind2gwnc6ce6 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 vj jy;r,f(b .lis at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the(y vj,.fjrbl; magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 =lo4 u;mdwrwuntlv062 0oz (x . 5.0 nC is at (0, 0). What is the dirzuw20l;xnm 0 ot(w. 6uo4rvdlection of the net force on the 5.0 nC charge?

  Three identical charges 3u/9- e j 4.fjpxk1io,4ug:bf aydcoqof 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the.f bu4/fuqa k:dy x1 e94-jg,o j3cipo magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separu n*)siq*f*ksated 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 thatfi u* *)qs*ksn the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a j,qos1dd)8 ozhooe 7)+9.0-C charge is at x = 4.0 m. Where on )oo8)d7 ohe,1sod zqjthe x-axis 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 x = 2a. Whes; x(mt v8b vqxm);(cmre can a third positive charge +q be placed so that thevqm xsmtc);; (bv(mx8 force on it is zero?

  A copper penny has a mass of 3.0 g. A total of:-u i(aoyzgl(m+x(tm $4.0 \times 10^{12} \; electrons$ 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 agai obz1e-d sao/ e0/gk,fnst the force of gravity by the attraction of a fixed proton some distance abovef 0og s//badkee- o,z1 it. How far above the electron is the proton?

  Two 0.20-g metal sphey vwh- zl* (7wzxss8i.res are hung from a common point by nonconducting threads which are 30 cm long. Bs wi. -w hxzzs7*y8v(loth are given 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 magnitude of thz (c sn5;c2qcje electric field at a dscccn;5 q2j (zistance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.50i6 x/0mztzirmm)kfs b a.x+91 m from a 506f9x) mis .axt+k mziz/1bm0r .0-nC charge?

  A 5.0-C charge is 10 m fromvbyr ih7l0d9qv*-1mn/o1y h m a small test charge. What is the magnitude of the electric field at the location of the test charge?1 /-iv *l 19hbd7mqny0yromvh

  A 5.0-C charge is 10 m from a small test chargyiq+jcx, .u4. b(sxkhe. What is the direction of the electric fieldy(jbxi4.+ku .hcsx ,q?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of theaob-peeg+q(s wb958n force experienced by a 1.0 nC chargnb+ew 89a5 es-q(gb poe placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance ogmtt v 94aylbcfzeg c62 95l)-f 4.0 m. What is the electric field at a point midway betmlc69a tz5 ) 2-bgge4v 9ftlcyween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a mazo0*feg8o 9s eter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric oesa fz98*0 ogfield at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mar.q 8rdn/rd ug7af: re*k of a meter stick and a -4.0 mC charge r/ r *a7f:derq n8.udgis placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3vbd 9 outa7o6kkyb9+ sfdz4 +,.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric ftd96d ovu9bz , fy+ksab4 7+okield at the point midway between them?

  Three 3.0 mC charges are at the three corners ook.+ ; xndp/dzaybz 6ny5/q0vf a square of side 0.50 m. The last corner is occupiep/6o.a 5dz0+xv dyy znn/ b;qkd by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m i1e2u4-ka yvd: j. miwqq8-zu on a side. 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, 0k4m.1uude:8i- w -2iqvj zqa y); -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 unif5vz rztvxo.90-j2z.p/ kvyv v orm electric field. What is the magnitu5opk.r-/vz0v j2 9. t xzvvyvzde of this electric field?

  A particle with a charge oq 0 1;2ybwencof 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 ov: qk5 vdvd42sf 6000 N/C pointing :vqk d2dv5 vs4downward. What charge 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,q3s walc4- qse2n af( nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What a-ewsl,qsac a 4n32qf (re the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm cat( 74 f t yeto2-e34jo6hevtjarries a charge of +2.0 mC. What is the magnitude of the electric field 43o4 otef e(-vj ty7h2a6etjt5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carrieyz )uh.sch+.e3 s2 guqs a charge of 3.0 mC. What is the electric fguch+ zy.)2 hu ess3.qield 6.0 cm from the center of the sphere?