State the law of conservation of electrg zu7 smol6;r;ic charge.

  Is it possible for two negative charges to attract each othww ,zpv.a/lctx 7zhq;v 76 i0ler?

  Is it possible for a positive and a negative chaz;l ni.eijsm7earv 8;tg9k r8, 6(j okrge to attract each other?

  A glass rod is rubbed with a piece of silk. During th0xv 8rp8+ 7c7kcubfjve process the glass rod acquire 7c78vk 8vb+jfc0p rxus a positive charge and the silk

  A proton carries a

  The model of the atom showsuq59hkb l.2z t a

  A neutral atom always w8gv9c15qj cbhas

  An atom has more electrons tjbxu;buvb- /7- j qv/v 8s.ays1urc j-han protons. The atom is

  Materials in which the 6vi-eu c/ 9w0bnci-t joqn29oufa5 )felectrons are bound very tightly to the nuclei are referrjii- et2 0un)/w5qfvofba9cn-u69 oced to as

  Materials in which the eleiio9 sqq, wj :/7fizwfb-t 7v;sn(mt+ctrons are bound very loosely to the nuclei and can move about freely within the material are referred f;-z,t+m bjsii:iqv/(wf o s7wqnt97 to as

  A negatively charged rod is brought near os nswy +ye03)8sg:rdq ne end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be cha:qednyy s3rs s)w 0g8+rged

  Sphere A carries a net positive charge, and sphere B is na. gqj1 n- 4)xuxw3ca c,7agveiq.4 bieutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Whicgqccx.na a- ju1e73 avbwi4xq .,4g)ih statement is correct?

  How can a negatively charged rod charge an electroscope positiqfel z7c5ut sc * e:pwhq2k)9+vely?

  An originally neutral electroscope is brieakwf al1d9:em9 zb/ gwqo+az338. fuv fly touched with a positively charged glass rod. The electroscw: zl/z+akva9e3 ud 9fab3m o .gq8f1wope

  An originally neutral electroscope is grounded briefly whiyr-jyuhb xmel,;(3vk(v7a5y le a positively charged glass rod is held near it. After the glass rod ilb7r,a(ye5 u;(-k mhjvyyxv3 s removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sepa9/03nfby g mzgrate. Then a negativem3 09nfyz/g gb object 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 lycm/2td 2sc6 vy q0esrw;d(7neutral 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 negs26m0q cres dv(yl c/tw yd7;2ative 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 cob u ;x.n hwkii6-rynj n z.v*w;,f.v:onstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thef .zpn;g* myzoiv ieye++3c8: first charge is larger in magnitude than the seoyyzf;* +ip3 e ce+.n8 zmv:igcond charge.

  Sphere A carries a net charge and sphe-rexk hk (/ m3;argry:re B is neutral. They are placed near each other on an insulated table. Which statement best describek-:(ger; ray/ rk h3mxs the electrostatic force between them?

  Two charged objects attract0-up+ 3xlyrhiq6 6w 4rcp a;si each other with a certain force. If the charges on both objects are doubled with no change ins r +y6 uiic;w4aph 3rp-6lxq0 separation, the force between them

  Two charges are separated c*k1q9ghglrwl7fh p v86 (.veby a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a. 86gv7e (gfvk1q w9prlch*hl distance of d/3, what are the new mutual forces?

  Two charged objects attract each othxvyaymb4m:* n3+qq 5d er with a force F. What happens to the force between them if one charge is doubled, the other charge i v :y5by d*qq43xmn+ams tripled, and the 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 sey1cp) udj9q 1xi2 +eraparated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed nexad2eqx9 cri j)1y1 up+t to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hlg co 1egkui o(b,(e5o.f)y,nappens to the magnitude of the force on the first electron if a second electron is placed ne o1( beoe, l5uof, nykgi()g.cxt to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happ(.x5l 0rm0a i*ngsx0ec8wx xbens to the size of the force on the gie80w xx nx cs0 rlx*.b5(a0mproton 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. Whenz 7 r:g6plom 8wl7too 0q4o.wh 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 thzqr o g086o7.o7wmwp h4ltol:e 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 byky- / z1o4ouis placed 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 zub/k -1yy4ooN 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 jf rlmyvsz7/2 yb;b,v20ebj 2a vector?

  At twice the distance from a point charbxwnl47 r h(+7zi s8dtge, the strength of the electric field

  Is it possible to have a zert.ahu- b/lrbm 7m2 *nm9tfxi; bche+-o electric field value between a negative and positive ch7hi /2h l cfxe*u;9b.tm+bb t-m-na rmarge along the line joining the two charges?

  Is it possible to have a zero electric field q f3gdlln)pyf21*y1fvalue between two positive charges along the line joining the tly*n lf1 g)1q2fp3dfywo charges?

  Electric field lines near psitrwsm8 t do o*f3si v*iu,232zsive point charges

  The electric field shh p:9ywkic)4r 0wogcv:)2 mjt own

  Can electric field lines intersect in free s) m1f,0pjxq8htrt6jra(um 6w 1bih y2pace?

  A solid block of metal in el mlab14k-l2kxt1rw* oectrostatic equilibrium is placed in a uniform electric fie-k14b* ml2ra lw xkt1old. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eacb8 dvm7i(sg j ac3:gsu k3tz3/h given the same charge, the electric field (E) midway between thdz73 mgkb3sj t g83:(s/ivcaue center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unifosa0*txm, 20am,plh lirm electric field is direhap0,m0xs,l2i*mt l acted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibr.k)e9hp * a5i *pst3jo75vv)3r nzl+smjo wofium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere t.6t-nu/eo:ywmrx0ocvy z v30 hat is grounded. Asemotv n c/yv0:3 0yz-.o6w urx compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in yc*j8x ce(sa2 static equilibrium.

State Gauss's law.

  The charge carried by one elecq( 3/v2b qcxhjtron 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 tha8 :i allefn4gx- +w rvs2m;gg)n electrons does this piecgm)-+a e;figvx 4rlg: nl8 ws2e of plastic have?

  What is the charge on 1 kgo( x 3hz8btzb8 of protons?

  An atomic nucleus has a chargyd4sw(, e7zk ie of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by .4*6ufnceg2;nkys f a +) q+vvn-7zrtt d.fpx1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between tqn.nc-gt+; 7az nk dsf46 y+f.f evvu)x 2ptr*hem?

  A 1.0-C charge is 15 0r-1ewhdg i0o m from a second charge, and the force between them is 1.0 N. What is the magnitude of the irg-w0e 01doh second charge?

  Two 1.0-C charges have a force between them0j8f rii5(c 3quec aw- of 1.0 N. How far apart are they?

  The force between a p8yc7 k;ibu-v $30 \; mC$ 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. If toksl060:uim9 bf4q o hhey are moved to a new separation of 8.0 cm, what is the e ulo06s9h4io mk0:fbq lectric force between them?

  Three identical point charges of 2.0 mC are pl73(ap vdi; vioaced 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 the electrostatic force which oa( d3ivp;i v7acts on the charge at the origin?

  Three point charges are placed on t1ql;y a-xquo1he 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 the11ulxa ;qyo- q charge at the origin?

  Three point charges are locatedyel-j7mjsfh5r) k/ 6 7mu j1id at the following 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)sm jeyfj5 ru6/j dm7li k-71h. 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 squaro*t75a7r0m -5 ibj hjwp4iaa ke, 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 7ija w bp aar5k-7mi5o4hj *0tcenter. 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, 0.10 m); Q3 = 5.:ie*k g6ogh0fp c (5yx0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charge*(goy0:5ip kxfcegh6?

  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 whf+7(/wwdfbh1x 8 2e :avmuzat (0, 0). What is the dx ewf +1d:7m2 uah/w (bfzwhv8irection of the net force on the 5.0 nC charge?

  Three identical charges of 3ffwg qxn: +2lj 13eob0 *ljol9.0 mC are placed at the vertices of an equilateral triangle w:eo j1g0+l9n jlf3xwqo2blf *hich 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:+3ndfearej 8 : x1 rc1u9qfme m. 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 would :1fr1ejemu :9 n8ed+c3xqf arbe zero?

  A +3.0-C charge is at the o,twf)ex rdxdvsp 0ggw:8;;r 0rigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third chp;; x0rsgwgrv:d)f8xwdt0e ,arge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placedxiqvkxmzw .b-2 2)t1)mdv 4ud at x = 2a. Where can a third positive charge +q xv1iv-z)m 4b xwu. )tqdd22mkbe placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total ,ikvp/ (kae 0nof $4.0 \times 10^{12} \; electrons$ 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 2 k)u lhn4a;xcthe attraction of a fixed proton some distanccku n; l42h)axe above it. How far above the electron is the proton?

  Two 0.20-g metal spheres areabaw6j,3 zh0 mb0 :ubh hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charg3,m0wb6za hu0:bahj bes, 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 tv .kz3kwempr, //1 b h38exgk uhb8x: 15rrfprhe electric field ah:ux8x 5/kpk3b31e w8 pze/fmrk,b.1vrh r rg t a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field q)ai-i:yl) ki at a distance of 1.50 m from aial)k qi: -yi) 50.0-nC charge?

  A 5.0-C charge is 10 m from a small,u 6 ij,6bhrih test charge. What is the magnitude of the electric field at the location of the test u i6h,6i,bj rhcharge?

  A 5.0-C charge is 10 m from a small test u-3fs hd4kr 0hcharge. What is the direction of the electric fieldsf3 u k0h-rdh4?

  A 5.0-C charge is 10 m from a small test charge. What is the magnit o(x (ugio-)(ga* mwgbude of the force experienced by a 1.0 nC charge placed at the loc-mo(uxg ) (ibaow(g g*ation of the test charge?

  Two point charges each have a value of 3.0 C and are sxaa3v 799 ouymeparated by a distance of 4.0 m. What is the electri a9vay 79muox3c field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter dtsvles1*s- (/v ;uktvv()hzstick and a -4.0 mC charge is placed at the 50 cm mark. vvl1(tz-)tv*dk hsu v/(; sse 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 s j ullc z)bz6:p-8(grrtick and a -4.0 mC charge is plagz 8j bpc)l- rlu(:zr6ced at the 50 cm 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.f x efqu531a6 wc9xb+k20 m. What is the magnitude of the electric field at the point midway betwee3+5x aqwfc9fx 61kuben them?

  Three 3.0 mC charges are at t/ne*5f fl;g)r t:cs7i g ac+kshe three corners of a square of side 0.50 m. The last corner is occupied bg+ 7 ac;t r)* igfn/l5sek:fcsy a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square wh.c z3gh o0o b3cazk)5eich is 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 a)0 3g eac 5cbkoo.zzh3t (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 ics +dj - h67mu4hw 54envxl:xwt is placed in a uniform electric field. What im :4dh ce5x+xsu4w vw 7lj6-nhs the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mas.n(e 4)wg/qn7 x-ridr.*rugz.t s tkns 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 of 6000 N/C g3x2 o 0brjhd9u6o0d, tqo3vo pointing downward. What charge must be placed on the 0j0o,qgd obrh 6ox33uod t92 vball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ballew u3 ay8e-jt7 is placed inside a uniform electric field, and is suspendeaey e-wu37jt8d 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 o a88 f*)od7 kdmxbdf/af +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's s 8fdb8admoa x7 dk/)f*urface?

  A metal sphere of radius 2.0 cm ca , xdewk 3dinax(t7:o:rries a charge of 3.0 mC. What is the electric field 6.0 cm from th, x:to x3dkwn:dai(e7e center of the sphere?