State the law of conservation of electric char*i6o f hsx4u1pge.

  Is it possible for two negative charges to attractms).jte umcje+:3g 8w e1 8avl each other?

  Is it possible for a positive an tjju+a*nv /j6d a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rodu:rctj 2, 9wp(kc- kwv;avy5j acqp vj:cv9y;wrc5 k-j(u2t,awkuires a positive charge and the silk

  A proton carries a

  The model of the atom shows lek31qm78ti vjl7 )cxp6kzo 1a

  A neutral atom alwayj zh;8qozt pm49 wog.5s has

  An atom has more electrons than protons.st;srr-(j,kf The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refm a:jh7a ).k2c0 4ejibhfcw6qerred tmw0 chk27 aj4qca6jhfb :ei).o as

  Materials in which the electrons are bound very loosely dmej1of,u kx qzxp,.o,:) 4gayf/w6t to the nuclei and can move about freely 4xf, ,og/ .)f:ukq6pyox 1,dzt mjweawithin the material are referred to as

  A negatively charged/ss89b8 c8cx1yjkf fp rod is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will b fc18sc x8/ 9ypksjf8be charged

  Sphere A carries a net positive charz gb+y7yn3f mz6skc-6ge, and sphere B is neutral. They are placed near each other on an insulated 6y67+s g cfyzmk -z3bntable. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chargedd zls2g / muvm)0eoz2: rod charge an electroscope positively?

  An originally neutral electroscope is briefly toucm6mjened7.-i 9of, za hed with a positively charged glass 9zm7ae di e- ,oj6n.mfrod. The electroscope

  An originally neutral electroscopzoj:o .iaa78 6rzf kk3e is grounded briefly while a positively charged glass rod is held neaki z6o:fj.8r7kozaa 3r it. After the glass rod is removed, the electroscope

  A positive object touches l lhbxe*7xxa5ql :w 93a neutral electroscope, and the leaves separate. Then a negative object3x97axqe5 wx h: *lllb is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A-iy4 52qoxwbk d,g3f b neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along,oqbb kiy dgx 4w52f-3 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 twn ;/abbi f8;ecn , *l8w,tp-0jy muyehe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first ch,dr:b7toz qm))ma3h aarge is larger in magnitude than the seco,bq :azdrhm)7)tm3 aond charge.

  Sphere A carries a net charge and sphere B is neutral. p/vcldh sbyuy a-4 w +lk82-r/They are placed near each other on an insulated table. Which statement best describes the electrosta2//lbkl+hd-wcy r yvusp8a -4tic force between them?

  Two charged objects attract each other with a certain force. If thegf(rh1+ x;alj charges on both objects are doubled with no change in separatiog ;fhj1x+la (rn, the force between them

  Two charges are separated by a; 32pn7 srtlzz distance d and exert mutual attractive forces of F on each olprz 2ztn;3 7sther. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F.m+i; +v 4uo3k swr rcxy,*wt7b What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation t34i+w x rr7wo c y;,k*bsumv+distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton2otckn4tn21h: o 6fmo are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to 21o46cn no th :fto2kmthe first electron?

  An electron and a proton are separated by a distance of 1.0 m. Wha x2- iys dh 3c-c+-mmq *t.d+g9zcjejat happens to the magnitude of the force on the first electron if a se-+ sjm3--dm *+9h 2x z tq.ecdgicajyccond electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens w eys(8o(i7 utyzm 4)fto the size of the force on the proton e7)f(w4 youimsyt(8z if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Wsmyff* /i;.d zhen 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 charges of -Q are placed at the other three corners of the square. What is the magnitude of the net electrostatic force af ;.m*zidf/ yscting on the positive charge at the center of the square?

  A point charge of +Q is p tf9bu* :l5*jouyb9 mclaced 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 4.0 N acts on it. What is the magnitude of the force that acts onlycb5um*ub*9toj :f9 the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vector? tj+e5 ajok(kf jd)f16

  At twice the distance from a poingua 4rx odmjm9l8 49b3t charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and po)re*)6agdua s sitive charge along the line joining t )d)e6g*s aurahe two charges?

  Is it possible to have a zero electric field va i) ohu*x6.zwdlue between two positive charges along the lin u xh*d)z6.woie joining the two charges?

  Electric field lines near psitive pa:96gb 3*wh3 bc dezo;5ryvi goint charges

  The electric field shoxyg 7p:*w)bsgnr k69xwn

  Can electric field lines i*de bgb kuk1,ma +g+wf cdliu3w+5t -0ntersect in free space?

  A solid block of metal in electroa i/s2d kb gtm39i-vj2static equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block't9 sb2d kg2ij-/3ivams interior.

  If a solid metal sphere and a h 7d6kktraekc7 j-+n i:ollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surfacekrk cja-+ n6e :t77kid is

  A cubic block of aluminum rests on a wooden hjjj 7tvx .dm4 8ah-i2table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge h.va7d8x jj hmi24j-ton the block's top surface?

  If a conductor is in electrostatic equilibrium near an electrbfti+t3(j k.k+z yi /oic charge

  A positive point charge is enclosed in a hollow metallic sphg ::9yw0mctc oere that is grounded. As compared to the case without the hollow sphere, the electric field at a point direc:wgy0:tmoc c9tly above the hollow sphere has

State three properties of usp0p +l:r va6conductors in static equilibrium.

State Gauss's law.

  The charge carried by urbw(r:v ts ),w88n hbone 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 mor.sz jvqyp );3 ,qra8ej8 80zg3epgdc ee protons than electrons does this piece of plastic havejgzp;q8,.geq3 y pj zdaeve3 8csr0 8)?

  What is the charge on 1 kg of protoquc yo6) 1a:mqns?

  An atomic nucleus has a chyf)h c ;ahb2a5 t+:q kacx79 -mcqqy:iarge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separajv7gl6,k)9cym908/mi ugd f tjay r*jted by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is t kjja, yvmgr98t)0jmfu/ *76g ycl 9dihe magnitude of the electric force between them?

  A 1.0-C charge is 15 m from m gz v3yiendsz8e7-yp4-etsilf: /v7pz 3 h93a second charge, and the force between them is 1.0 N. What is the magnitude of then9lhz:fz 3 vzey48e-s s/7m7yd-tvp33igeip second charge?

  Two 1.0-C charges hav46 o*k ;phya4 rvlru*oe a force between them of 1.0 N. How far apart are they?

  The force between a w g toouhu* (a*7bo)xehnw;+ )$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2. rj*2hvmi10unrx 3y1u7o z9ty0 cm apart, experience a 1.0-N force. If they are moved to a new separation of r 1vm*jht3i971ouy0x nyuz 2r8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x6uu;m l4 awr, wo/j7io-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 whic/ uui om6r,w;o7 jw4lah 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 q(n(c9rmnbs ( m0nwo*d4:a kzthe 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 directions bo9*(q0n m nck4(mra z(d:nw of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC .1z-u;d zl s 8*ug4a*xsossz sfp9 h,zat x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitu8fu,*zh u.xs4-gzs9 1lpzos sadz s;*de of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second pof vk;gc-v x; 2bt3a2keint charge of -Q is placed at the upper-left corner. It iakv-2;tkfx c v2 ;beg3s 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, g;k +t wx+5c-i 4zkutf0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.tg+ ck;-tf4zk5ix u+w 0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is a7 8limsvml/f.yqsa3j -c,v2 zrtt 6c(t (0, 0). What is the d q2cvstll,c m8(iatyv7j36/ fmsz. r-irection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral ee pu:/9rvk8 + :kcbnhtriangle which measures 30 cm on a side. What is the magnitude of the electr:8k+enu/vb 9 :herpkcostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. o5;7cg4 c8-cmp pdkf0no9 :cqbp jch8 At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostath 70b 48ndp cm - pqcoc8cpf:k;5co9gjic force acting on it would be zero?

  A +3.0-C charge is at the origin and ogga:4sca8vr7/z h)ta +9.0-C charge is at x = 4.0 m. Where on the x-axis can:v 7szo g4 /hrgt8)aca 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. Wheri ztkt (k1u/8ie can a third positive charge +q be placed s(ikikz1 8utt/ o that the force on it is zero?

  A copper penny has a mass of 3.0 g. /g910fuq0z o4 bh ohr1.apbdw 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 the force of gr ogd2,dt- :gpqavity by the attraction of a fixed:gpgq ,o2d -dt proton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point bb5xqtcu)-/l-r q9mnl y nonconducting threads which are 30 cm long. Both a9q)-qr/xnm -5utbcl lre 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 t5;j y*dvpgqce+/z4l the magnitude of the electric field at a distance of 1.0 m from tel+gqc4 5;djp/* yzvthe nucleus?

  What are the magnitude and direction of the electric fiel *j9sgqzxv2 8n cm:7qdd at a distance of 1.50 m fromv:*79sdq 8cmxnq2gj z a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. k+6bg-cigw qyw:r * +e What is the magnitude of the electric field at the location of the -wi: *w+6bgcyreqk+ gtest charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dirg csuid r7x,+2ection of the electric field?i+,gr2ud7c sx

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude 5-d/tcp rfc*l of the force exp r-5plc fcd/*terienced 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 separated b + eog;9iu-,botm abp2y a distance of 4.0 m. Whaebu;i2+abgom,to9 - p t is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of 7 yu3y/+viyyb a meter stick and a -4.0 mC charge is placed at the 50 cm maryv7biy /y3+yu k. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed ayf7qu 6um;bq4w3p f*an9imm; t the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what pointm36ummb4qf; ;yfqi * 7u9 pnwa on a line joining the two charges is the electric field zero?

  Two point charges of +3.nt a2e lh8vhtf)v56f ;0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the ftnh hfa628 )l5vev;t point midway between them?

  Three 3.0 mC charges ar4qt hsh8k:i 4di ;2oioe at 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 idi4o 28his t :k;4oqhcenter of the square.

  Consider a square which is 1.0 m on a side. Charges are plac,8 adsmwwb;5q ed at the corners of the square as follows: +4.0 mC at (wmd ,s8;waqb50, 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 is placed in a un+ccnbi1kd3 xd6e 39m:(ehhpfiform electric f:ckcdnp (6 eh me1x33hb i9+fdield. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mCybfw-ltzgz +dp,pj 4; (add* 4 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 electrihv. nx 6m)0lnnc field of 6000 N/C pointing downward. What charge mv.m6 nl n0)nhxust be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The balllf:9d qlg7i.nw:q y8p is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of thew8 lf.dn lpg::qiqy9 7 electric field?

  A metal sphere of radius 10 cm carries a chargeuh15 2peyeq8k2xg* qd of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphhdxq8yg ep*2qu5k1 2 eere's surface?

  A metal sphere of radc3 lmd7p )b(/u-i z m1lsnka*iius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the cea*lp3l m(sbni/ki mu-dz 17 )cnter of the sphere?