State the law of conse1 wr5 u7u 2ise92kgcmmrvation of electric charge.

  Is it possible for two negative charges to attra 3tnp) slo(;olqb 8pd( 12plvt/q9zvgct each other?

  Is it possible for a positz 8plf lob )ogsz3l0 t7y.lp+/ fs-l;rive and a negative charge to attract each other?

  A glass rod is rubbed wha.15 r trhi1aith a piece of silk. During the process the glass rod acquires a positive chr1h ira5tah1 .arge and the silk

  A proton carries a

  The model of the atom tecs6 x;f fr fj7j)+p5shows a

  A neutral atom always ha8n ph(tn sr22ms

  An atom has more electrons t (je,g, x9t0hvrm mu8shan protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei d1 zm5-d2wjkb are referredbdj- kz2 mw51d to as

  Materials in which the electrons are bound very loosely to the nuclei and cad, bwl;d3z(gj1qcv v8 n move about freely within the mate1vd3 j,lqc;gdvbz 8(wrial are referred to as

  A negatively charged rod is brought near ond f;u81zhs em.rol+9 qe end of an uncharged metal bar. The end of the metal ld.8 1;emsfuo +9zhrqbar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plavbcrcyw,/jg+dydc efn.iy g29v *(1 +ced near each other on an insulated table. Sphere B is briefly touched with a wire that is bvf cr./9w 2gyi+nce1j *cy, v+(yg ddgrounded. Which statement is correct?

  How can a negatively charged rod charge an electroscopecsaou7 9 c7g)v positively?

  An originally neutral electroscope is briefly toucusb4-l 5 ;mvjzhed with a positively charged glass rod. The eulb4z-j v 5;smlectroscope

  An originally neutral electroscope is grounded brie0 e( lhwj-hy/tfly while a positively charged glass rod is held near it.wlj hteyh/0-( After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and t:1zxq9eme:hh)zi3yc o:ga m/ he leaves separate. Then a negative object is brought near the electroscope, but does not yeme139/chzqxo): :hmzgi a : touch it. What happens to the leaves?

  A large negatively charged object is placed on an in)rnt+n d 9io/asulated 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 stops. The first ball rolls forward, but does not touch the negative object. At no time does either ball to+t )n9 dio/rnauch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulozipw.+5unia;16 * l /ribuur, xakx-qmb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge isro s,l owdp/oexn1epg(*3:,t larger in magnitude than the second celp,3g/1snod ow *e,tp:(orxharge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near ear x/t6 ubu6 c+y1tgchsdl 7*m5ch other on an insulatc cysm61t*hrtd6x7 bugu5l/+ed table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the char e/5ync fo;qxwr,r(k.ges on both objects are doubled with no change in separatir xrqo(.cy/;nwek5 f,on, the force between them

  Two charges are separated by a distance d and exert mutual attractiv l4am/h(7 xtoie forces of F on each other. If the charges are separated by a distance of d/3, what are the no l(tm/ih74xaew mutual forces?

  Two charged objects attract each other with a force F. What happens to3d cd ihlhn md,bro-hz+.n l0a-9kf41 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? The force iilndadm.+ 4dlhhr 0b - 3n1z9,kfcoh-s now equal to

  An electron and a proton are separated by a distance of 1.0 m. Wha9xg+ytps30fq ;p*rpm t happens to the magnitude of the force on the proton if a second electron is placed next to the first elecypf3prp+9x 0mqg *;tstron?

  An electron and a proton are separated by a distance of 1.0 m. What happens ,fo e4,(oyk51: rkk9eaghwu oto the magnitude of the force on the first electron if a second electron is placed next to the proton?aoy:wr 4 5keo,o, k1(he gku9f

  An electron and a proton a-iep)okc )ovw zx0a71e)z ch6sk 33wore separated by a distance of 1.0 m. What happens to the size of the f c6co)io7 wz1hx a)-w)p3 o0kek3szevorce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of yi;0lj+ .qz pky+d+a va 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 positive charge at the square's center. Now, identical d .p+kzy0+ylqaji +;v 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 cqrj4b,s gf+1 an 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 dscbf+rg j,q14 ue to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a v4ey 0 +bvqui t-(d2so**nxshwector?

  At twice the distance from a point chapmww5276 e7 * tbpharsrge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative an*. uru ,iwen0ad positive charge along the line joining the t0raw.nueu*, iwo charges?

  Is it possible to have a zero electric field value between two positive ch11go8 6 r6osxj+ o9zq1 ixuatsxc0;hwarges along the line joining the twh g s;1iztx66 sxqj81w1o0r+a9oo xuco charges?

  Electric field linestvr 6-zqi e *p5cby3-g near psitive point charges

  The electric field shown7oqj 7. paiap0fe:/ri

  Can electric field lines intersect in free sv;k g k7kzif1.:w/c pppace?

  A solid block of metal in electronzc,t,yy/a n 2b,kqdpw6 1 j8mstatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the blo6a8/2qnnyc,mwj z ypbt,k, d1ck's interior.

  If a solid metal spher- phn 5-o,smpwe and a hollow metal sphere of equal diameters are each given the sa now-p,s p5-hmme charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests o/)x y40otu esnn a wooden table in a region where a uniform electric field is setu4)o0n/xy directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in eletj-6e:2trr nao 0uk ovt* (.fictrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grounhjlgj(1ik co )d0 a58dded. As compared (dg0licj)do5a8 hj1 kto the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrnk3;p9e53ltjw ay shf d5i4g )ium.

State Gauss's law.

  The charge carried by one electro 9 jv/m:bz-gbz 5p1qj (jaoai,n 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 *7uakv 8vg)o aof +2.00 mC. How many more protons than electrons does this piec7o*gavk u )v8ae of plastic have?

  What is the charge o nc: mg8exdo:;n 1 kg of protons?

  An atomic nucleus has a chargelsm0 *ye;6hmg of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5pfism c t*.jw -7l0*jlddr42j 5ern* d cm, have charge values of 2.0 and -4.0 mC, respectively. 0e*lr2wds mcd ljrp7d4*-*j t5.nijf What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a se io+ylfo,li8s *)9r sxcond charge, and the force between them is 1.0 N. What i+ ,fs*iy oo9 ix8)rlsls the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Ho r4 -5jxe-fn;uye*vnaw far apart are they?

  The force between a b+kbx 6o p-f+h 6olu/r8zma/o$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initia/9w py9zde h2flly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new sepazp/y 2 f9ewh9dration of 8.0 cm, what is the electric force between them?

  Three identical point charges4u :hwwkgd0 7:xjragngpv57vj82n z8 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 are the magnitude and direction of t04azwr827 uh:d wjg n5kj 7gn:8vvxgp he 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 placed39i16abqki *ojwll/cc 3xd7 c 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 wjxd3w 1c lioa6bqclic7k 9 */3hich acts on the charge at the origin?

  Three point charges are located at the followidgwcvms3+;1cjhc3/ 3rpe7de 3 epd: g ng 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. What is th 1c7wev3cedc +p 3medg /prj3sg;3:hde magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a sqsiit3 ( mj8xe8:tlef+ ,1juajuare, 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 if a third charge o,1+j se(j j8x83tufi iel:tmaf -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 mzl7 (2dbwum0*ph- m lo, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net forcedm2um7bw0l(zp -l*ho on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 n96lwb -a +bx6h kpow9uC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.k h+lwoxwb6up9-a9b 6 0 nC charge?

  Three identical charges of 3.0 mC are placed at vty(:8 lyjq8d8ce0(rge l 0slthe vertices of an equilateral trianglr0jeydqel(l(88lyg:s 0 t v c8e which measures 30 cm on a side. 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 / fsbmw4(ayu 9umdxrh(u73k 9m. At what point, on a line between thrk md4 a(s /mu(39fuwh xuby79e two charges, would it 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 the origin and a +tx *cg0;vl 0iw9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be l *vitwcxg;00 placed so the net force on it is zero?

  Charge +2q is placed at the origin and chscb-u92x:sjtazc ,a, arge -q is placed at x = 2a. Where can a third positive charge +q be placed so that thc stxzsbjua,a9 : -c2,e force on it is zero?

  A copper penny has a mass of 3.0 g. A total of rcftf,:pfufssu9e,c 3y wf *c1t 056 b$4.0 \times 10^{12} \; electrons$ 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 fixed23 . pwrqeyl4*- i2p nrjyhvr) proton some dista3w -hp v2q.n*ey4yr prj2i) lrnce above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting 9o)h05t wcf rvxp1;bb threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between tctb1fr oxv0w;)p 5hb9he threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. /lh pkda l61e3What is the magnitude of the electric field at aa/k6e1d hl 3pl distance of 1.0 m from the nucleus?

  What are the magnitude and dir3g4fkib7p1 w c;d oei mg7dm8z:6rt5p ection of the electric field at a distance of 1.50 m from a 50.0-nC chargc6:r7dgikp 57tdfegpwbi 3z4 1 ;8mome?

  A 5.0-C charge is 10 m from a small test charget6/-meo, uxz5 s7dlxs. What is the magnitude of the electric field at the 5z- ts/x, e 7udlo6smxlocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is/5mmpf:wecz3r 5 dqdmtie-06 the direction of the eleccm3 rm5z/i5fqpdm0t-:e6edwtric field?

  A 5.0-C charge is 10 m from a small test charge. 3vbx s:xvb/ c6de,49lhise: q What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test xv/sc4i b9ehvq::3 edlx,s6b charge?

  Two point charges each have a va)yemez,o8q 338* n/y sqwxegp lue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midwmnx83 e*3yy p ,seg8)qqz/weo ay between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of9w dk9zng2i;x a meter stick and a -4.0 mC charge is placed at the 50 cm mark.kg 9x9wn idz2; What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the t-8ct.ia7ihfk et /t10 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what pointt tf1ta8.k/ eh 7ict-i on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placer 2h9t ,zw,7hhzay9mrd at x = 0 and x = 0.20 m. What is the magnitude of the electric fzm z9hyrw9 thr h2a7,,ield at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The lzh/ wtkply**l2h0 x,xm6yk d(ast corner is occupied by a -3.0 mC chmdxpzkt / yhl y k*(wh,20l6x*arge. Find the electric field at the center of the square.

  Consider a square which i0(kpo x espk:xsmd(7 2s 1.0 m 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, 0); -3.0 mC at (0, 1). What is the magnitude of the electric field at the squarxps0mk (pd(o2kex7s: e's center?

  A force of 10 N acts on a chad*o wq:r4 j+earge of 5.0 mC when it is placed in a uniform electric field. What i+ :a 4eow*jdqrs the magnitude of this electric field?

  A particle with a charge of xy1jw.6,e7*izjtut2 2npla o4.0 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 0.1 1vo i5+h1;dpaafzec 120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be p+cdap h ;a511oz1iev flaced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.0ccwkbl3 ( gr 1lcd;h. se:i2)i0 nC. The ball is placed inside a uniform electric field, and is suspended aga(d 2c .:hwr3igbi1ckcs;l) elinst the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 c9 mu8xfcaa; /rm carries a charge of +2.0 mC. What is the magnitude of the exacrf;mu a9/ 8lectric 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 rz b*r1*j jv)-ei6 uwkd:z-o ifc9x/ mis the electric field 6.0 cm from the cenz-brzvicj6/ i *) mx:kwj9- rod*e1futer of the sphere?