State the law of conserva3-l+sa1efnqy h zq 31otion of electric charge.

  Is it possible for two negative ch8+q 4k ;yo ncrk pjnf28z9rp4earges to attract each other?

  Is it possible for a posib4smk4m (j.2bpg vo g-tive and a negative charge to attract each other?

  A glass rod is rubbed with a piec ir.-zg+m tfufgchy 46zw69e ( yp/.vue of silk. During the process the glass rod acquires a positive charge gtyvu6+ .fc.h-94 zzgpuwmi/ry 6f e( and the silk

  A proton carries a

  The model of the atomrxkf,t55l7 kd p/d:-hpx p*oz shows a

  A neutral atom alway .h bevaka+y*kp1a::n3sqb5 w s has

  An atom has more electrons than protons. )) +c/uoskoz q *y3*gqjn.ota The atom is

  Materials in which the electrons are bj+1gdf od,r;gound very tightly to the nuclei are referred ;gdd+jof g,1r to as

  Materials in which the electrons0ot h 3k/m8x4cxcs yn(:(ax la are bound very loosely to the nuclei and can move about freely within the materiacoktxx a3n(s/a0( xh ml8y4:cl are referred to as

  A negatively charged rod*8 8h(xynpnfzlap/* u is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will z/halfnp 8ynx** (up8be charged

  Sphere A carries a net positive9nqm,+j:n k- v q.ombg charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounde+g. kn,-nm: bo jqq9vmd. Which statement is correct?

  How can a negatively charged rod charge an electrosc v7ls( kkfetnmb0j 6()ope positively?

  An originally neutral electroscope is brieflb+txb3rv5 r tl,w5p nsis4s ;ux8t,(jy touched with a positively charged gwx b s3tlnr5bt(u,s +8jpsv;,tr5 i4x lass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a posix m7dkzo7i7 xl2u(c1dtively charged glass rod is held neacx 7(du 7dk1 io7lx2mzr it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Tq9k8(;cys cnk.vmyre s 8gk4i3b) g)jhen a negative object is brought near the electroscope, but does not touch it. Whaty.4ck y )imkg er kb8v3;(gqs)sc98nj happens to the leaves?

  A large negatively charged object is placedz/geuw:1 6u: rsgk yoa 7o/6ec on an insulated 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 stopsw:: uu o kar7y1z6oee6sc /g/g. 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 Coul cf(lgh9tvt, ao ac 6)*pi-abs.,aiw(omb constant $k$, which appears in Coulomb's law?

  Two charged objects are separ5: xnamw wrk rt wqyo o70k0:0yk54zkf-xvi1.ated by a distance d. The first charge is larger in magnitude than the s0 f -anvz kkryw50.7:o iymx15k:4qowt x0rkwecond charge.

  Sphere A carries a net charge and sphere B is neutral.d2ls-cdwc2*p 5uvw s - They are placed near each other on an insulated table. Which statement best describes the electrostatic fosdpu-*w -w2ldsc c v25rce between them?

  Two charged objects attract each other with a certainn po*ze *p)8vy force. If the charges on both objects are doubled with no change zye v*8*ppn o)in separation, the force between them

  Two charges are separated by a distance d and exert mutu.ebw; 5o5noqh al attractive forces of F on each other. If the charges are separated by a distance of .w;ob eh5oq n5d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the fo t.66d3tq8c-fyu qgekrce 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 ortut8ye 6dcfk36.q -gq iginal value? The force is now equal to

  An electron and a proton are separated by a distance of.b.bs; (wvye ,khyj6quo:g v0 1.0 m. What happens to the magnitude of thvy.boby,s vq :jkw.u; g6he(0e 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. Whatbr+vkyw(b9l)g2me mdh h45 1z happens to the magnitude of the 9 zmvyr2g)4bbl h me5h+dk1(wforce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 c)-o+fbene+c4 p z g8wm. What happens to the size of the foeccne+8 bwo)f- z+4gprce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed ll,h p x02ems h ,j j676zgg+riyk*0no9fx g8aat the center of a square. When a second point charge of -Q is placed at one of the squaz i89kno yrg 7 2x,,l+ hsjfg006aej6 lhp*mgxre'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 acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid o k n(7t2w pqi1gmyc1m7f 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 charg7( 7nktmc1 wqg1 p2iyme due to a third charge of +Q placed at one of the other vertices?

  Which of the following is nis97x89w h gfoe)ft )kot a vector?

  At twice the distance from a point char6 y .x6gpnlaf-voz(k 5ge, the strength of the electric field

  Is it possible to have a zero electric field val(up k:)rh6q3h yyaz 8*.xuolcue between a negative and positive charge along the lin (k 8*6q): cp3uhyohzuarl .xye joining the two charges?

  Is it possible to have a zero eltge*w,l6(b.z0vrpl*0ex d yzectric field value between two positive charges along the line joining the twoepz(6l *tgyr*e0 0, dv wbz.lx charges?

  Electric field lines near psitive point( )uu e1cyiy:jw)0pwa z 4auz2 charges

  The electric field sh (zpw6 wed(uj-own

  Can electric field lkmtym+b +n0 4tines intersect in free space?

  A solid block of metal in electrostatic equilibrium is p5:,0h w uk/y bz 752pzw wflfehikh*4xlaced in a uniform electric field. Give a statement concerning the electric*h y7el0:i/fw ,x54b wz5khhfp2kwz u field in the block's interior.

  If a solid metal sphere and a hollow metal spheroqvfne )4es o .cv-63ce of equal diameters are each given the same charge, the electric field (E) midway between the center and the surf qev) c-3ns oc6o4e.vface is

  A cubic block of aluminsws v ,a:6z2cyum rests 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 top s a:c2wzy sv6,surface?

  If a conductor is in electrostatic equilig3z49bysp1 lw bp mkm3*5dem 1brium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gro bf0ba1h1dt.ei 5 no64 0insdr -6mbvbunded. As compared to the case without the hollow sphere, the electric field at a point direc4mfo006de1.t -hb5nsbib b 1rni6dvatly above the hollow sphere has

State three properties of conductors in stao) 06li4 qbub w(8ybzutic equilibrium.

State Gauss's law.

  The charge carried by onc2+ y s6y i)7;hpi ,gonopy+uge 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 more protons th nj/cnersxq 3ib51-b0an electrons does this piece of plastibje /n0ni-5cs1 xrqb3 c have?

  What is the charge on 1 kg of protjdh )mjmmg5d.c/ vp(w ev*(2dons?

  An atomic nucleus has a ch/ d2rjbr)4i bp3kdl9-,bt t 6ghtj- juarge 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 values of 2.0 and -4.0 m nrtxx 2xr/g5k97rw0eC, respectively. What is th9rekxxnx7gr0 /t5 r w2e magnitude of the electric force between them?

  A 1.0-C charge is 15 m frkhp45d+o(g e xom a second charge, and the force between them is 1.0 N. What is the max4epd( g 5oh+kgnitude of the second charge?

  Two 1.0-C charges have a force between them o ewz,ittx/5kxrr; e* 1f 1.0 N. How far apart are they?

  The force between a gk3i8(4lo-zv6a;le x8 .uk ctwnku m4$30 \; mC$ 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 they io/c*b b9kmom uln4 d1j,gnq:+l* u0 lare moved to a new separation o:*bnu9l,qjll ougnod*i1mbk +0mc 4/ f 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mCe+sb6 y .cl8i9rzv-va are placed on the x-axis. The first charge is at te.lyrsc+9v-68 ziba vhe 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 origin?

  Three point charges are placed on the x-axis.a3/cc m-o zyq :ls+4gknfk*1 o 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 nac+fl:c 3oy1gz- mkq4 o/s*k the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following pokjk(l hf3 kl lx*n)g. m3);sbrsitions: 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 of the force on thegnx )l(ljkh fm.l;kk 3*) rbs3 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second y4;t8 p hx/gnx(if5fppoint 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 ypih8f/x(gnx pf 5 4t;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);mzbxi i9mz32 5d; hwq/s;( roe Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magn szx/z5bd9i;h 2;mqmw or(3eiitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is a +cvhm;5 w2rvet (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 ;wr5 v2c+mvhe charge?

  Three identical charges of 3.0 mC are placed at the vemlultt4rkf+ *z 1p l8.rtices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the chargepr *tllm.k41f+ tzlu 8s?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what pog-ws v79)b qxchbo0 .4purbmnp +q9*qint, on a line betwo w04 gb *qcqp+hqun9).r-x bm 9sbvp7een the 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 +9.0-C charge is at x = e1 dlz4djk.sf:o a6r:4.0 m. Where on the x-axis can a 4s:doa lkd.jfrz:e16third charge be placed so the net force on it is zero?

  Charge +2q is placed a2m( 1ov6.agnw u+q kibt the origin and charge -q is placed at x = 2a. Where can a thir+mo6ki a1(n2w.u qvgbd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass 5kmwj0 8wm hw 8zku)/zof 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 gravity by the attraction of az r4r gz(q5 2x 2kjfs6qxmr+oaae:6.f.guxb) fixed proton some dis j5 bexg2u6 ra:qsx( z .gkz2)f6 q.rarfm+ox4tance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung c9 oc/vn2n t5 ym)k4mvfrom a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion for2y nc tv5on mv/m4k9)cces 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 xu qv:e:cqluv/k9; 4e the electric field at lv:9 k:;ve ucq quex/4a distance of 1.0 m from the nucleus?

  What are the magnitude and direction oim2qi p/)n3a 9no5 kwjf the electric field at a distance of 1.50 m from a 50npw) 352ain m kijq/o9.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is thyfho1 .jaq3ch* 3/ skne magnitude of the electric field at the location of the test chkyh3.fjaoc sn*/q3h 1 arge?

  A 5.0-C charge is 10 m from a small test charge. What is the l (34xhz0cj3fn nwq/v/azksg42-u b wdirection of the electric fiqk -u3v anz(/hc4w0/ ln z42x3gs jbfweld?

  A 5.0-C charge is 10 m from a small test ygusake)g(00a( n d:j charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locaadjku(n:y)0seg( ag0tion of the test charge?

  Two point charges each have a value of 3.0 C and are separatedeiuekj*0df1 +z973ce4 eqqv z by a distance of 4.0 m. We +zek*q zvd3 j974uifcq0e1e hat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the dme3vfiw++b6k, m+(glv vd)o 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50fe+vm,l (kviv dg+)d6 +bowm3 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 ansg f2 yya9*rk0d a -4.0 mC charge is placed at the 50 cm mark. At what point on ay9 yrkas2 *g0f line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placeju0tf co *2l f8+gugy,d at x = 0 and x = 0.20 m. What is thec*gu yjf 0+,foul tg28 magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side myxafv/ 2x9e8dl:ax,zz38deyt/ + a o0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the sxo/+/ d2zmyxt9,vz: 3 8laaeay defx8quare.

  Consider a square which is 1.0 m on a side. Charges are placed at the corneh0vxhurp/)n,i4 i -curs of the square as follows: +4.0 mChuch4ivn uir x-0,p/) 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 square's center?

  A force of 10 N acts on a charge of 5.0 yr+9*mfo/e 3y8bdzz smC when it is placed in a uniform electric field. What is the magnitudybz f ye3z*m8dr+ /o9se of this electric field?

  A particle with a chafxnvkis(1j -u lchqh-nvr)+u+2ew7 + rge 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 elvksdi:stb-pz ,y6a /y3z bt ,*ectric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended?btakz,*6tiy zb- :vdys3p s, /

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The bal4vs:5(k hh fw 0a-rgigl is placed inside a uniform electric field, and is suspended against the f giav(5whks 0h f:-4grorce of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries ah gj- wgl0j3bq,m r.0r charge of +2.0 mC. What is the magnitude of the electric fielr j.bw ,mj-rg lh0g03qd 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the hafj5h9g3 gi 3ex/ j1belectric field 6.0 cm from the center5g3/bgeih x193j jfha of the sphere?