State the law of conservation of b4s-fyzug,tn:*-ro )+z wklw electric charge.

  Is it possible for two negative charges to attrac l7y.7o4j t6 ciqhuazzj/-sr8 t each other?

  Is it possible for a positivpa( 7 ob;wmt089vcwa8uoj kq/*ic 7 cue and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Durinkz q/6 r(;gpoeg the process the glass rod acquires a positive charge and the s /k; z(egprqo6ilk

  A proton carries a

  The model of the atom s 6 gq:21ab5soqwqlls11-pqy vhows a

  A neutral atom always haf1 dcl44a0qc0;ja4 cncjqd.b s

  An atom has more electrons than protons.bgwzf(k-d:m8 The atom is

  Materials in which the electr 2a/i o5p/ohsfouq9 b6ons are bound very tightly to the nuclei are referred to b 2 oh56/ oopuisaqf9/as

  Materials in which the electrons are bound very loosely to thw r4 0*7k qe,y(,bm*smvnpg kfe nuclei and can move about freely within the material ,*, wr 7kqekpn* sy mb0(gfm4vare referred to as

  A negatively charged rod is br:7gpvi9 n ,*hmn4b ovmought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be charge*vv4,ngni9 mp m7hob :d

  Sphere A carries a net positive charge, and sphere B is neutrrn1n1pcf:q qoj 1r*9cal. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is g: c*19 1pnnfqrjc1o qrrounded. Which statement is correct?

  How can a negatively charged rod charge +g1mddqme660 qjpu+le s( te 0/eu a8uan electroscope positively?

  An originally neutral electroscope is briefly touched1k(pjiy5t14:. qa k4 1skknsgeh p:wd with a positively charged gl11w4ky s qkij5 edksg: (aht.p:k p14nass rod. The electroscope

  An originally neutral electroscope is groundedxy2k3qyu5cl;))m ec7bo u l;g briefly while a positively charged gu m))x5qceulocky2b 7ly; g3 ;lass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutradf0u1rl 5a ot9l electroscope, and the leaves separate. Then a negative object is brought near the elec9 lof05d1rt uatroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insx t;jyf ;)1veculated 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. A e;;1x)yj cfvtt 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 Cou- s:epr-y wcm4lomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. ; w+b pw85l/a(xoijep9z*lc -u6ju ak The first charge is larger in magnitude than the second charge.95-x6 /aclwile u+b*zopjpj( a u8kw;

  Sphere A carries a net charge and sphere B is neutral. They argx5pruc e0zkx:/p p k21* 7z370eazs p*xqriqe placed near each other on an insulated table. Which statement best describes thcx e 5z1u0 r rsp0x7/ik72g3qapp*keqz* xpz:e electrostatic force between them?

  Two charged objects attract each othe6j .f1k:xp6qqb d j*+rfsi)gpr with a certain force. If the charges on both objects are :*jdp.g1k bqjx+ q6 )ipsfrf6doubled with no change in separation, the force between them

  Two charges are separated bofx c-8 )s qz 24zcs3k2x7feuyy a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distan2o)ksy c-z2efu8x qz73x 4fcsce of d/3, what are the new mutual forces?

  Two charged objects attract eachehur38 *l:yq yp+ ,jcw 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 betw+yprcq,u3yj:8 we* lheen 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. What happens tov/ti g1mgt/04fz8tsv the magnitude of the force on the protovs 0ig4g/fvt8tm1 z /tn if a second electron is placed next to the first electron?

  An electron and a proton are separated by a jt d9o3y6. pq0z ipzq4uzu-6g distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron isgzq6utu90 oppz4 - 63 zyq.dij placed next to the proton?

  An electron and a proton are sew(d jrexl ln,rk:w16*p5n w03roze4.xzdg x; parated by a distance of 1.0 m. What happens to the size of the force on the proton if the electk.x,xzdd4z(1xlo en6prwwlr: 0 gwjer 3n;*5ron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a se6a e- p4nl43t tarbg,bxf v3-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 at the square's center. Now, identical charges of -Q are placed at the other three corners of the squar v gfnx - 6rtbb,4t3eae3p4la-e. 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 c9 +qvd: . -6dr )(sspawutegjan 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 itq +ues)strgp vd a:9jc(.w6d- . 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 vectory9j2edsv3 7k f.k0x wg2r7nim?

  At twice the distance from a point chargeygwb )l6 rbatv(lm g;9:. avb9, the strength of the electric field

  Is it possible to have a zero electric fieldbs a6 e)6tqsgo8;-ttw value between a negative and positive charge along the6so-wtea8sttgb)q; 6 line joining the two charges?

  Is it possible to have a zero electric field value between two positive char6 g(v6-jpslblm4tf5 s a- fm7pges along4f pgf( a--765m t6smbsvlplj the line joining the two charges?

  Electric field lines nl2 t (uza95s*imcr2 voear psitive point charges

  The electric field showo 1q77y kjdzu,n

  Can electric field lines intersect in freetl dt.u ;.l8ia space?

  A solid block of metal in electrostatic equilibrium is placed in a unifuu yy+why 5p;xumj j1w0dr*0.orm electric field. Give a stum05 1+jpr.x dwyuyw;jyuh*0atement concerning the electric field in the block's interior.

  If a solid metal sphere andmcq+k1lkro ,2 a hollow metal sphere of equal diameters are each given the same charge, the electric +olq2kkc1 mr,field (E) midway between the center and the surface is

  A cubic block of aluminum reap. 38) tuom5cxune*pq1 u )xw5mn slknu(54s sts on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's)15up).aspknws3m cnm 5 u* onuuq4e5lt(8xx top surface?

  If a conductor is in elex -lt sgar)s g1kbt:ps8urj0+95 b x6tctrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gh8 on /d4axyv(,p8; z; eyzwnurounded. As compared to thzoevhuz8p 4d xwa/(; n 8,yy;ne case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static eb;rso26wfktcvm y*93ia1 g *+l -poy6kkd iq;quilibrium.

State Gauss's law.

  The charge carried by one elemh6dm+-s -blez,h+n sctron 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 protokoq tpb-5dse*: w( v:rbsk9o.ns than electrons does this piece of plastic have?steo 5srk :9o(b: d .bvpwq*k-

  What is the charge on 1 kg ukgl 9xfdh+o 3:ez hwy1xq:17io;5m nof protons?

  An atomic nucleus has jzea9h qy 9*t0,e 1i6i1q kcfva 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 chargor5+2jhn:6t4k tcw1rdj jpi 8e values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force :c hjjrj w p2864ro51t+ kdntibetween them?

  A 1.0-C charge is 15 m from a second charge, and t8 c4v */beja;oxri 9:- rilcwthe force between them is 1.0 N. What is the magnitco*rreic 4/jtwb8 a; :v 9x-liude of the second charge?

  Two 1.0-C charges have a force ymlqf2q3ve nf40h 9f +between them of 1.0 N. How far apart are they?

  The force between a y3yy- ienh rka6u 759y$30 \; mC$ 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 force2d y5czzg( 5finr ()sj. If they are moved to a new separation of 8.0 cm, whatc) ((5gjizsn z2frdy5 is the electric force between them?

  Three identical point charges of 2.0 mC are placed on vx48c d 2/l0im 9eqjkvv8 +bfothe x-axis. The first charge is at the origin, the second to the right at x = 50 cm, andi2xb8 mo 0v48l+ej9vcf/d q vk 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 the x-axis. A charge of +tnav7j;oee/+7 he e d-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 thdt+e- a7ov7nej;ee/he origin?

  Three point charges are located at the followf wx /ghang2ea;,t-j3 3ik8 wqing 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 the magnitude a,3n3kafw 2x; twhejg/8q -igof the force on the 3.00-mC charge?

  A point charge of +Q is placed at the cenf ox4x0iu5u:g11 a2 k iafcx7uter 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 the maiu 145 kofaxci :20uu xf7a1xggnitude 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, 0.10 m); Q3 = 5. l-/:f8qj 9rex1h bu0 pat2 dekti.*sq0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 -faxd9 b qe. q rt:puh/ej2i1t8*lsk0nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at bfl7qid)n73w(d(o be (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the7 i fed7(o n(d)qbl3bw 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatg(ktm g-yk/*8wc9czy q1t*dk mcu- )xeral triangle which measures 30 cm on a s( kmtqgxzy8kwc-1*ud 9 g y)/c* kmtc-ide. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges o/ ( r;hghoh*j3gqii 7bf +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the twho(* ;iighg37 jbrhq/ o 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 +9.0-C charge is at x = 4.0 m. Wher .*/ ytwgsp5nyq6b j:i paqq91ei0q: ve on the x-axis can a third charge be placed so the net for bqaj*styg0q6:/ p59inq iw1yvp: q e.ce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wherl.hyp9uf6 1b be can a thir u9 bb1.6hfplyd positive charge +q be placed so that the force on it is zero?

  A copper penny has a m2( 4s (x*hn+g kf(2mv lufqqwcass of 3.0 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 against the force of gk6fr,ua/ j;zpb nt l78kg0pj( ravity by the attraction of a fixed proton some distance above it. How far above80,ua(kg/j;tp nk pz6 7rbfjl the electron is the proton?

  Two 0.20-g metal spheres are hung fro.ozc0k vrp+o1m a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the elec vp1 o.0r+ckzotrostatic 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 the electric zzqstap*s-es 13 9l2x field at a distance of 1.0 m from the nucleus?9lssx z -sta 3z12qpe*

  What are the magnitude and direction of the electric field at a distlo wku j6e4wy y4+i.btl7* x*fance of 1.50 m from a 5wf.ki e4ujwy+ 647*bl ltyx*o0.0-nC charge?

  A 5.0-C charge is 10 m from a small x6t p(ih a ch3h+)qxr0test charge. What is the magnitude of the elhr6) 0qhtxac+p(ihx 3ectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small 22.e-yv jx+ifhq ygq 1s8my,nx 8f,gqtest charge. What is the direction of the elect yj-s,8,x28.+2 yymvifqxg1gqqh ef nric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of they)etkejgqi 7-e l51(k force expek1- eke7q 5yjg)(il etrienced 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 sna9 u-+ufn3;jc k9xkwojutx: +a+-hyeparated by a distance of 4.0 m. What is the electric field at a point midwacy:;un+ -9xjwtu k9- naafk+uoj3x h+y between the two charges?

  A 5.0-mC charge is placed at the 0 cm mau q:1o+bx *a1rnj6qrark of a meter stick and a -4.0 mC charge i 1ja:rxrqun1a 6ob +q*s placed at the 50 cm mark. What 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 p2slb9lnovpd3 ;xjfz,f2v9 +t)g1faa -4.0 mC charge is placed at the 50 pf1 z9xd3alp+n;)jf f ,2vgostlvb29cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.2*rvy ee6wj.sj, dh. o/0 m. What is the magnitude of t.dho,/*e . 6vsyjejw rhe electric field at the point midway between them?

  Three 3.0 mC charges are at the three cornex4o/d.+ ssn gdrs of a square of side 0.50 m. The last corner is od4/g d+.snsx occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charxlmoj)+0 8 mhwd*o7mx ;.7b gcmbmll3ges 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 d8b7m mlho0mg. xcm73j o *m)bwllx;+ electric field at the square's center?

  A force of 10 N acts ofcf53 tig)d 2kn a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnit)5f23 fcktigdude of this electric field?

  A particle with a charge of 4.0 mC has a 9/ib dmmu,) xjmass 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 ele9nq ja h *v.+vhv8c7gzctric field of 6000 N/C pointing downward. What charge avvn7qc+9zv*h gh 8j. must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries m3 7onkamu -s67x80 i*hb rvmna charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the mag*07s mx76avnb8r-ou mi3khmn nitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2 *,yydabk(t3a.0 mC. What is the magnitude of the electric fied(3a,t ky*bay ld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carriex r vg.9 t01fl;e po er,g1epk+fgzv.5s a charge of 3.0 mC. What is the electric field 6.0 cmv5gvrpt9gg e xrof k11e.;e +,0.plfz from the center of the sphere?