State the law of conservation of eleca(z wgldbcxwm *2*54 vtric charge.

  Is it possible for two negative charges to attraczq go581lo(p/)4m dhvh7yijr t each other?

  Is it possible for a positive and a negative charge to attract each oyodc:.sbs(u 5-iyu ywc u ovg-5.q 0*zther?

  A glass rod is rubbed with an yx-b u/u ed9e3bw(b- piece of silk. During the process the glass rod acquires a positive charge and the -3 bee(yb u9-/bunxwd silk

  A proton carries a

  The model of the atom showj9(7c 9pighrrt4) s oks a

  A neutral atom always * cp7j lmznnc1mli 076has

  An atom has more electronhja:b27nm.n c s than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclm0k.w,m3vj rbbz2 pd6ei are referrez b6w2pb3 mm0. jk,rdvd to as

  Materials in which the electrons are bound very loosely to the nuclei anf f7x64r w0 1wa8x+vp ,hjnc-1 ydkplkmb0r:od can move about freely within the material are referw:1 d0r1 4kpf -chpw r8 ov,lfna 6yx7kxbj+0mred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Thy4..f 4el/5 ,a ieespz tlhi3c4cn: lse end of the metal bar farthest from the chlze ,hil4 4ac. :3ssyelcn .et/p5fi4arged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. -ge lznkx, 8yv gv0llo;6, c5)jpkm )z They are placed near each other on an insulato6;gz mv n llzjl y kxceg)8,-,k5)vp0ed table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivel5v;cdvwmz .y7qy2 4iw y?

  An originally neutral electroscope is briefly touched with a positngwi j,ts33wi6a;nu +ively charged gl wunwnis;6 g3+j3tia,ass rod. The electroscope

  An originally neutral electroscope is groundea p 2.jvljqcv c).sm:.d briefly while a positively charged glass rod is held near it. After the glascc:pj)v.vaql. s. m2 js rod is removed, the electroscope

  A positive object touches a neutral electroscq(80 zi5lqiu 2k7jiw,(ca s jlope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happenk2cqi7li iqj((au05j8szl w ,s to the leaves?

  A large negatively charged object is placed o8m0 m(ag ov .xzs7c:dhn an insulated table. A neutral metallic ball rolls straight toward the mdmzsx7oh(va08.g : cobject, 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 Coulomb r otln vw3gp;k5 3j6x0constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger *psy(,xpa- g xfx 2:l+vjesm0 in magnitude than the seco20apm-v *sg(x xp yf:e+ jls,xnd charge.

  Sphere A carries a net charge and sphere B is neutral. They are placc:p(x4:xht-x5dr r kmed near each other on an insulated table. Whic-drhx:4t kr xx (:cpm5h statement best describes the electrostatic force between them?

  Two charged objects attract each other with a .+r *kx(syobxcertain force. If the charges on both objects yb ox(x+s r.k*are doubled with no change in separation, the force between them

  Two charges are separated by a dej plw8-y 1.hnistance d and exert mutual attractive forces of F on each other. If the charges are separatew8ylhe -p. jn1d by a distance of d/3, what are the new mutual forces?

  Two charged objects attralv+gowcr-g:r4,b yl5 ct 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 is4bcry:or5g+ wl-,l gv reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separ8 u mbfc fyz,xfiq v)a+;t-c(3ated by a distance of 1.0 m. What happens to the magnitude of theci83y c (q)f;, -+fzxfbtmvua force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens xsyvrv j3 7*v /r9nq:eto ths*r9 7rv vqy3 xvnj/e:e magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separabbww-a pl4z*)ted by a distance of 1.0 m. What happens to the size of the force w*w)z 4bb -palon 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 a square. When a s-jcw 3k neyz;fqy.pd0 s*lewfs*kivy). (0/y econd 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 atsfy0k/3ze yj0inf e;*q d k)(wsl -w*p.v ycy. 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. m (ex(6ij2 ha;v qw+1kc/t(wr tiecy9 When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N actiw1 c2 t6 ejeq(/(+(hvyxrckam;it9ws 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 followin3q n8 lua+nt+ zspvsyy,v82*ng is not a vector?

  At twice the distance fvyl 8lp ,yg gn6 co756hywr tvl7gjrd9c, e.87rom a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a nekcjq9ap*7 r f7gative and positive charge along the line joining j7 fkq7cpar*9the two charges?

  Is it possible to have a zero electric field value between two posi: uj/aul g 3ledo33/umtive charges along the line /uj/3muo 3lg:3l aeu djoining the two charges?

  Electric field linesz16 moit mb(5g near psitive point charges

  The electric field shx j(d p9wlu3;cumuzo:+; *j6 alihv,hown

  Can electric field lines intersect in l0c(5 lo9lzwtnwm )e75j tffg vul b3;0*5otifree space?

  A solid block of metal in electrostz i;nko0.1-f etz:zux ,;m zopatic equilibrium is placed in a uniform electric field. Giv :n0utxm1,.oez-; oz;ziz kfpe a statement concerning the electric field in the block's interior.

  If a solid metal sphere and * ih)ps fz;l1ja hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway b ;fj*il 1s)hpzetween the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a univq5rc tr2vo .8form electric field is directed straight upward. What can be said concerning the charge on tht2. 85 vvorqcre block's top surface?

  If a conductor is in electrostatic equilibrlecqf rdvl+e t69bo 8a8o ,r9gspc9+3ium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere tha,j /c3o8gx i4nuyqfc ;lo7tw ,t is grounded. As compared to the case without the hollow sphere, the electric field at a point directlynw,;yj3 /c8,47lxioq ftu gco above the hollow sphere has

State three properties of 9v7 xemroyai :ct(.(qfi nqqw 4ke78.conductors in static equilibrium.

State Gauss's law.

  The charge carried by one o v yuf)iw+p70electron 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 mor19(y f 4y)f urg es)fkm*3xk7fi(gaap e protons than electrons does this piece of plastic havefk1 y93pmfsfg(k e)xuiaafry)*4 g7(?

  What is the charge on 1 kg of nl qn,g)7v a9uymk1/bprotons?

  An atomic nucleus has+7 pjmqdh038q-y81 8cvk k tiw 8bwrxz a charge 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 vg:- stv2lpe8n alues of 2.0 and -4.0 mC, respectively. What ipstv2g n-: l8es the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second char6tmcy snf6 )umhdr(4gz5bis.uj8 )*pge, and the force between them is 1.0 N. What is the magnitude of the second cs 6)4u (fb.6ugc*j)srhmm5n dpiy 8tz harge?

  Two 1.0-C charges have a fo.l,0 hssj+ tybbnfy1s*av2z3 rce between them of 1.0 N. How far apart are they?

  The force between a /wvob(s*y*d/xd;0 2maol s n s$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N force. cd/u,qsd dr4 ( If they are moved to a new separation of 8.0 cm, what is the electric force between the/ d4ud(q cdr,sm?

  Three identical point charges of 2.0 mC are placed on the x-axis. Thamj05iq02tmlxx 8n/ 43xckx ie 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 the charge at the origq0/t0jm 3 ix kxlxn524cai8xmin?

  Three point charges are placed wp l*; mf1ys1 +; iqx,t zsqz:zg9:noton the x-axis. 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 on the charge at the 1yztzqzx1*:tgw qlo+ n9s:,;s ip; fmorigin?

  Three point charges are locats )qbptn ec6-p,;ilg/ed at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC pti;c) eq pl ,bg6s/-nat 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 center of a square, and a second gy v (;mktb5v:m4qb e,p/5d tapoint 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 ab/:5ty(qtva;m m5eg4dkb,v pt 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 nri 47; e8hp(adzx1nxv C is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0r(px znh;4 ex81id7 av nC charge?

  Q1 = 6.0 nC is at (0.3q le*hy(s8tl 80 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC ch yl(st e88ql*harge?

  Three identical charges of 3.0 mbq mvxb.o8/*qc+tq7p6r9wo s C are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on o .+6b wm7q t/8so*9qbvcrqpxany one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 mvk6w(q:gpz 8e . At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it woq:pgve kw z6(8uld be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Where o)nbv4ax( lms 8*s ji8bn the x-axis can a third charge be placed so the net foriabmls(*v sb)84x 8jn ce on it is zero?

  Charge +2q is placedtiofi/g8gq nz u97m/ / at the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be plac i/ nqzg78goim/ fu/9ted so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tf-q/2wkwjt+ 4odz m/ zotal 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 w9/7 ikp/jqlg+bea) lgravity by the attraction of a fixed proton some distance above it. Howb p+a 9eq /)wil/7lgjk far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonc7y-i-lj2vyfy q;m9/ ,yuluiwonducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion for /7;29yvwq yf ,l-iilmuyuj-yces 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 the nc1w wj, w74nrelectric field at a distance of 1.0 m14 wc,7r wnnwj from the nucleus?

  What are the magnitude and direction of the electric fielldmykud 599 a)d at a distance of 1.50 m from a 50.0-)99mlyud kad5 nC charge?

  A 5.0-C charge is 10 m from a +t,m 9iz bgfd5small test charge. What is the magnitude of the electric field at the location of the test charge mgb,z+ 9t5ifd?

  A 5.0-C charge is 10 m from a small test char,4y rgp m v6*1a/qxrfbge. What is the direction of the elec1qrr*,f g6/ xvbpm4yatric field?

  A 5.0-C charge is 10 m from a small test charge. What is the mag(d-gn0xd a9uqfqq w ,*zx5f*vnitude of the force experienced by a 1.0 nC charge pldx*-n 9fqvg wqdz,x5 *fqa0(uaced at the location of the test charge?

  Two point charges each have a value of 3.0 C and areedije3 dq0z* +/z-qm,kj f(erj2l3 xz separated by a distance of 4.0 m. What is the 3rdkejf*3+, m e/dxjzqzq2 z-j0(i elelectric field at a point midway between the two charges?

  A 5.0-mC charge is placed at t7ux1t(psxq b4 he 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Whattupxqx(b174 s 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 charxw ;-.m3m(lo nmi*j azge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field ze. *x(ai;3nw-mljz o mmro?

  Two point charges of +3.0 mC and -7.0 mC are placed at xcsrn09d8 b6ub5 uw l-p = 0 and x = 0.20 m. What is the magnitude of the electric field bup nl-b8s06cw 5ru9d at the point midway between them?

  Three 3.0 mC charges are at the three corners hu9h 8qv5-qt5jqclo :j5h -zv of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. jq5q-z8uhj5h5hlq tvc -o :v9 Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placedk o 8 uo-jbucqzm,k8/q+ fbv(( 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)k/vo-kqoz8 um( qc+bj8 fb (,u. 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 gat96y6h smg: 7rav )3lyh2dtmC when it is placed in a uniform electric field. What is the magnitude of this elsy6td2lyr :)67htma9agg3 vhectric field?

  A particle with a chara 1 y;h -),o pt.8p;fw+xab1uzzuz rtege of 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 nevm4a.c:jz( xg 6/-lg(w v zoof 6000 N/C pointing downward. What charge mus: loj/( w-g(gan .vvz4m ex6czt be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nCu wfv;0fh 0ce ;mrf7 e:ijx8+,b* kill. The ball is placed inside a uniforh:l ifulfjw+f0 c0e*8i;, me; vxkb7rm electric field, and is suspended against 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 ike6d+-5msqh bs the magnitude of the electric field 5.0 cm fros+mdq6 bh5-kem the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.4fr*ot3 ry. p4 lnh8jq*g9bxn 0 mC. What is the electric field 6.0 cm from the center of the sp.fg 8n*rtnoqj4 9 ybxh*lr 43phere?