State the law of conservation of electric ch+w 80yuk +*pmyr ey3khu.r n6uarge.

  Is it possible for two negative choefmidcq5*u n j*01a8lp)f1 harges to attract each other?

  Is it possible for a positive and a negative charge to an::(2* gdf;yisvz p pkttract each other?

  A glass rod is rubbed with a piece of sil s vfu6i*84iask. During the process the glass rod acquires a positive charge and the si48i*is favu6 slk

  A proton carries a

  The model of the atoz+p icja5z0s0 na( :njm shows a

  A neutral atom alwayb;+widb6n8 khm 2dq/w4nre8ch q2 ja+s has

  An atom has more electrolh6xb 04fa fwdtn;nd 1k9 0ii;ns than protons. The atom is

  Materials in which the electrons are ot h3bkm9/ nn5bound very tightly to the nuclei are referred tokhtm b9n /35no as

  Materials in which the electrons are bound very loosely g5sl5y1n (wk2 ap gw 0rd5uu9uto the nuclei and can move about freely within the mater5ay u rsp0gludgnw2w5 u1(59kial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Ts7wasewthxs8 z 8/;u-9/f raahe end of the metal bar farthest from the -hsf9 w; /axssaute/ra87w 8 zcharged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. zs,,zj0kmy h iy6 45tuThey are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. zys60 k,yjm ,hz5 uti4Which statement is correct?

  How can a negatively charged rod chsth7 bmq,+f.ylz/u( qsx o0w3 arge an electroscope positively?

  An originally neutral electrosqlj p*6k1c *sk. gis-bcope is briefly touched with a positively charged glass rod. The electr*s.ksg *cl-kqp i1b6joscope

  An originally neutral electroscope is grounded briefly whiuh2 7mgbxi i,zj (f0j5vphw(9,kg0usq -tqd,le a positively charged glass rod is held near it. After the glass rod is removed, the electrojpmi, iudxs9t70vj5qh(zg(u qh,2-gk f,w 0bscope

  A positive object touches a tkupf- u8+s-rneutral electroscope, and the leaves separate. Then a negative object is brought near the elect rs+ tk-f8up-uroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object ipk2d -1ofhqg ;s placed 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 stops. The first ball rolls forward, but does not touch the negative object. At no time does either ball touch the negative object. What ; hp2ko-gqd1 fis the final charge on each ball?

  Charge is

  What are the units of the Coulomb cons7 q(0uuz3g- dow 8mpqntant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is. ;qb9q ookk-7v o-m8as1ryf j larger in magnitude than the second chargs1-8o7o k fb;q9rvj a qk.-moye.

  Sphere A carries a net charge and sphere gd 3zcu12(kynq3. u 1i0m gvokB is neutral. They are placed near each other on an insulated tab0zkc k112 qv.(uoyim3 d3ggnule. Which statement best describes the electrostatic force between them?

  Two charged objects attract eavk:.r lxck;.rch other with a certain force. If the charges on both objects are doubled with no change in separation, the force betwee.krlxr ;kv: .cn them

  Two charges are separated by a distance d and exert mutual attrdqdw +c0t;c(aht ;xs 8active forces of F on e; d8tts ha c;x(qc+wd0ach other. 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. r-g+s/o,k tb m What happens to the force bet+k -bm, gro/tsween them if one charge is doubled, the other charge is 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 se-*kq 6blzj sy9h c:a/zparated 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 to6cyb* qhj9a-/ lzkz: s the first electron?

  An electron and a prot8t*ja 0;carsv on are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the prot arvt;aj08 c*son?

  An electron and a proton are separated by a distance of 1.0 m. What )w .cl-xtc,*ayj2ks i happens to the size of the force on the proton if the electron is moved 0.50 m closer to the ps2t)wj a .xc,-ik*lycroton?

  A point charge of +Q is placed at th:t,(+cxpo n xke center of a square. When 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 otc:kn x,p+x( net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the cent( 3srirr6v++9(q(;myslt8mt my+p z: x yryxdroid 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 on the centerys+mtxlmr 86 m y3d z;p(9(trvsi+ (yr+xqyr: charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followin:92.p7q 2fnsay9vut lanlo o4g is not a vector?

  At twice the distance from a pre3qu xkr7yz26lx) s(oint charge, the strength of the electric field

  Is it possible to have a zero electric field value betwod x)j5yyev( 7een a negative and positive charge alj5(ex 7yv oyd)ong the line joining the two charges?

  Is it possible to have a zero electric field valuhq7ot i il 3em1;fn1ngcu2*fjc+;n -qe between two positive charges along the line joining the two charge c;7g 112*; nhqno-cei3l inqf+fjtm us?

  Electric field lines near psitive point chargesko 8a8 mdazzv:tb*:da4 ut55 w

  The electric field sh(6fzll9n80ae k 8 kbmuown

  Can electric field lines intersect in free spah3n1csbd zgw-e/qkg1: *w ov- ce?

  A solid block of metal in electrostatic equilp183v ise9)z m;fh if,r zd-plibrium is placed in a uniform electric field. Give a statement cd p pi),zeh r9li13f-;8sfzvmoncerning the electric field in the block's interior.

  If a solid metal sphere and a b,vjy3+djdi3i i*+xw: t ws/m hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surfac+v +bwwi *jsdx/33im :d,yit je is

  A cubic block of aluminum rests on a wooden table in a regionay qq g.3aj33y where a uniform electric field is directed straight uaq 3 q3ygy3.japward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium n bbt909 8ouxsfear an electric charge

  A positive point charge is enclosed in a h(peymsy.md 7s/exq 0lpy l39 7ollow metallic sphere that is grounded. As compared to the case without the hollow spqyml9y03ls/(pe e sxpm y7.7dhere, the electric field at a point directly above the hollow sphere has

State three properties of conductotconuu/qj. 5ie. )-b zrs in static equilibrium.

State Gauss's law.

  The charge carried by one eako) mnt)a6d 8ika+hoqj 2t9:lectron 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 v5t*q n2vs+fqprotons than electrons does this piece of platv+q2q *ns5fv stic have?

  What is the charge on 1 kg odt km3 x,ea uxc02o( kggajy4/9i7:ogf protons?

  An atomic nucleus has a charkypwcmu10 6x3*sdt+fv o1i8bge 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,7ecf7 b*wgk6 e have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forcef7g6w7 e beck* between them?

  A 1.0-C charge is 15kqv-(y 3ebu d 9c5h,aq m from a second charge, and the force between them is 1.0 N. (cqhek3qdyau, 5b9- v What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How f:on, bx*bhz d2(1reo ru8x 5krar apart are they?

  The force between a l66tkqsmd k2.aw0 glj,p4c;a$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, yp-qu2;)q9kctk1i4 mgg n9eojef9kr - b-2ywexperience a 1.0-N force. If they are m uqy qkcp422e -y1 nw i9ro;mgbt)-ejf-99g kkoved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point eyb9nd aq,mklg3te qz72,c l2:lf-, vcharges of 2.0 mC are placed 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 magn2: ae lq29z ebgmq,,t3d -kl7vc fn,lyitude 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 +2hmfx+ ekkzr7u (4tk5+c9kvr+5scf ej v3 td 21.0 mC is placed at the origin, -2.cx95tvfm+(3skrf7 14zkc j2+vdhk euk5ter + 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 origin?

  Three point charges are located at the following positions: Q1 = 2. wmj)rnk *crd: pq785v00 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 the 3.00-mC char8mj:q *dv)wk 7rn5cprge?

  A point charge of +Q is placed at the center of,yi zeyy5ss97 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 magnitude of the force that acts on the center charge if a thye9sy 7i5z s,yird charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0lnfk 4hkti8:1ylo1xnyl )c(9o ox- e9); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0:lf l1helo kx -9io(9c4n1oy)8nxtk y nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0a/aq*r js j.v t .nx3msgdj30ve./ng3 nC is at (0, 0). What is the direction of the net force on .j*ej 3 mrv.3/sg van0aqjs .3x/dg tnthe 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at t- d jg+j)) iyxh,tkh r,g3c.mdhe vertices of an equilateral triangle which measuresdrt-gi jy).+ 3x,g dj)m h,khc 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-k1 zg7kqn v- cg/w2kr and +4Q, which are separated by 3.0 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 actikgk q127zvn /crwgk--ng 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. Whecu5a) j myx)u/re on txc5yam uu)/j) he x-axis can 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. Where cay(p ju bdce5i w;/gr tl6k 2ai56j1hc-n a third positive charge +q beapwl21dr/ -b5 uge jkyct( hic;ji656 placed so that the force on it is zero?

  A copper penny has a mass a9pc/ elw0mh-:np pz;:sx4yfof 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 on8r*)x ) 5n +4bpyw(/ hu8ogaet sjnoagainst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron 5 ) j8oo+an(n s/)nhxb8wog*tu 4e pryis the proton?

  Two 0.20-g metal spheres are hung from a common point by nw,, q puj.mqw:/qc3hjonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between thm,jpcqw3q/ qju:.h,we threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitudeo6tf5ww.0n i85 mwkz k of the electric field at a dist 5zo8wmi0n5wkwf.6 t kance of 1.0 m from the nucleus?

  What are the magnitude and direction of the elecgrj7cse0s n3 4j v7zg9tric field at a distance of 1.50 m from a 50.0-nC ch3j n7 sv40sj7g ezcr9garge?

  A 5.0-C charge is 10 m from a small test charge. What is thzy8b ,)vm w t8y*eywb7e magnitude of the electric field at theymeyb,w) yz88v7* t bw location of the test charge?

  A 5.0-C charge is 10 m from a small test char0r h5)e/2hks;dpyp pv j;jz(xge. What is the direction of the electric fie;5h; /x2rpzvj )yd p(p0 hesjkld?

  A 5.0-C charge is 10 m from a smi+t5z8e p mmn1all test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locatiomp 5 +tni18zemn of the test charge?

  Two point charges each have a value of 3.0 C a xfyxwty4*w .1mg9gf pat*y :6nd are separated by a distance of 4.0 m.a1y*.fww x m4*yyp:gg 69xt tf What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at thg2ja)ww-o/f p)f3/i bawu go 0e 0 cm mark of a meter stick and a -4.0 mC charge is p /)pofiw/a 2o w) 0aug-3gfwjblaced 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 a -4.0 mC charg:om 8cy1c;f oue is placed at the 50 cm mark. At whatc1:cou oymf; 8 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 =)zu 815-0oqul8 zwetf.:s xenknhdq 4 0.20 m. What is the magnitude of the electric field at the point midway between themeun84sxq -u8 k.5:f z1qndolht)w0z e?

  Three 3.0 mC charges are at the three corners of a square of siok .tq. + m-(gwbnd6 9toolvj)de 0.50 m. The last corner is occupied by a -3.9)ld. 6 omo+w-(jo.bg ktqvnt0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges ard:ppb90ef1 wf;*kj cc, gyp d4e placed at the corners of the square as follows: +4.0 mC at (0, 0); +4fkp;c d pe 01bjfc*dwy4 p:9g,.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 uniform eh rfcf1n)fe+n-4 )9wf crfm; alectric field. What is the magnitude of this er)nre fmf- ;ff+ )4 hc19fawcnlectric field?

  A particle with a charge :;k teupw qg (8s. jm5wazt;aq 2,7zujof 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 l7r1- vcdqdbk5fw8u mm9xn57mass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball fokfmu79c qrv7m db5x 5dl18-wn r it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. 7 hcmux)9 i/j3v msqi n1x9q1dThe ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the elecixhq cn q j1/793i)9vd smux1mtric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is thy-mt0jt3r)w p6 eom u5g bmv6-e magnitude of the electric ftj6 mwep 0 bm)og- uv3yr5-6mtield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carriesic.nq+7;8ytw mge-zc a charge of 3.0 mC. What is the electric field 6.0 cm from the czywtqn;e -.m +gc c7i8enter of the sphere?