State the law of conservation of electric k8hpm 6o f3z( o ewpmzg zbkrg*on8)pg23 9-,icharge.

  Is it possible for two negative charges to attract e.7 scq+ztr ctb4fc nuw/*)w3 e+(uojdach other?

  Is it possible for a positive and a negatrcok56 z7sa7l t(oenbn z f:1 yd*y/oo7 m-tf.ive charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process thea hz hrzn,:6f; glass rod acquires a positive charge aa:rh6 znhfz,;nd the silk

  A proton carries a

  The model of the atom shows tg2 : ,g 5zypcftdbac998fpj4sj02 e:lvjt) da

  A neutral atom always has4lnkavyk fu fcc/p1: 7so2e ,+

  An atom has more electrons than b (6z, jzsi7eaprotons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refen- rb4/qdbv6trred to as4r6 /bqb-dnvt

  Materials in which the electroof;u 7shs,uwg8 .1i .cueinp0ns are bound very loosely to the nuclei and can move about freely within the material are refwci0u 8s 7o.ghu f;espin.u, 1erred to as

  A negatively charged rod is brought near one end of an unchargedlbk.4z99denq v56q vv metal bar. Thee nv.9bk4ql v6 5vqz9d end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive chc -:-1ewmsky3n 8c0 zpro9 dk-tra7ekarge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B im :kt3c8 0oy kkz 9eew7srnp1-r-a-cd s briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charh8q :oc6zj60e nfdj i w9y.*nk0ov ib1ged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively c 7oqp,qdj(t6ryi 9ot: harged glass rod. qpt yqo9iro: j,(6t 7dThe electroscope

  An originally neutral electroscope is grounde c *y(fpizveg:k.x*w( dbn(a/ d briefly while a positively charged glass rod is held near it. After the glass rod is removed, the bi *a*gp.k/dncx ( wy:(fez (velectroscope

  A positive object touches a neutral electroscope, and the leaves separate.k(o ;sl9jqi (a Then a negative object is brought near th;9((sl jkioqae electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed ,i,p v sht5y9lon an insulated table. A neutral metallic ball rolls straight toward the object, but stoyt ,s5 vlhi,9pps 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 1ep -q+4 vcks+hixzh9Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargeb;i1dyc-o y4q is larger in magnitude than the soy; -bcy id41qecond charge.

  Sphere A carries a net charge and sphere B is neutral.e:tht*+,j e pt They are placed near each t:*+h,t pejetother on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain forcqm8(e z;un.mm e. If the charges on both objecemn m8z;(u.q mts are doubled with no change in separation, the force between them

  Two charges are separated by a distance dd( gk-iz 09c(. 7jvw/iypso uy and exert mutual attractive forces of F on each other. If g-0cs(7/d pykoi9 zuwyi .j(vthe charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects 9m*vhy.yt++occf.k5o e5if pattract each other with a force F. What happens to the force between them if one charge is dom to5y .p c5*fk ye9+voihf.+cubled, 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 separated by a distance of 1.0 m. Whavd6lk(hd onk kni p-k2a,*5c3t happens to thk cdi(3v, n*oa lkkhpn k5d-26e magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proteez **pyfzcdsct39 0,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 placezf0sd *pctzy*3, ec9 ed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens h yw;hut)9(a d i:zbl.to the size of the force on the proton if the electron is moved 0.50dlt9;uih):yzw( hab . m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second poic5iwu 4 io:y p29z3sehnt 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 opys5co 9e:w2z hiu43 if -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 tsv ov++ ey+)mdriangle. When a seconde soy+d++) vvm 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 charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a ve qpba+),dqd,s8 pb2:xmxap m/ctor?

  At twice the distance from a point charge, the strength of p j0i ibfc5ky.lme7k, 6gigce1nk 49- the electric field

  Is it possible to have a zero electric field value between a negative and wugiv 58o.qn. positive charge along the line joining thou .. 8n5wgivqe two charges?

  Is it possible to have a zero electric field value between two positive ch q(s14q6hft dxarges along the line jhqx1ds4f 6( qtoining the two charges?

  Electric field lines near cd+ : ls9ivfo(xv,,+fhfp n/opsitive point charges

  The electric field shoxtb)2p :ht(bxghk/r tjw 3*z 4wn

  Can electric field lines intersect in free spacma***rcf :mn-rg+c e re?

  A solid block of metat4z0ud;73 (o9 r 6grila ejojsl in electrostatic equilibrium is placed in a uniform electric field. Give a statement conc9eou r;sj dlogj7z(0r63 it a4erning the electric field in the block's interior.

  If a solid metal sphere rlmvm*a1e 9./x7kf qos(v.eo and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center anv(/oerx.q lsv 7a*mk1 o9fme.d the surface is

  A cubic block of aluminum rests on i+6awuln5en( a wooden table in a region where a uniform electric field is directed straight upward. What can 5ui+l(n wn6aebe said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric al -dq;.y3q xll5(azgcharge

  A positive point charge is enclosed in a hollow ue1bd3hs): iimetallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly a3si db1)h:ueibove the hollow sphere has

State three properties of conductors in jv:da;ol51rf static equilibrium.

State Gauss's law.

  The charge carried by one electrm+23ul;gubm/pzkml5ih6 x e1on 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 p*tbndw fp: csp:r,3p*rotons than electro,c:s ftwrdppb *n p:3*ns does this piece of plastic have?

  What is the charge on 1 kg of pro5/klcc i:hxdvp65e 7a tons?

  An atomic nucleus hatdk5--8zf 1i8ocfnj c s 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 pk87hllh ud re4 *vo338mj x3wvalues of 2.0 and -4.0 mC, respec h378re k4m3vulwjoh *ldp8x 3tively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, aed6qv/ l g89kvnd the force between them is 1.0 N. What is the magnitude of the second charglvq6 /ev9 gkd8e?

  Two 1.0-C charges have a force between them of 1.0 N. How far apa i,( oe sjqs4skkzv:/*rt are they?

  The force between a (r) iyfze9:j c 3cg+yh$30 \; mC$ 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. Ifj f;+ff-cn x,x they are moved to a new separationfx jc,f-;nf +x of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.tp4qgk ;j g+4g0 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. Wha ;q4gkgjt4 +pgt 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. ccwr d9xfbc/0.4y ;e5pe2aeqA 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 thed cfce q5x.;w/9y b42e0cep ar magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following p/)j (stx x0ts*qqc c: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 mt/ps*0 c(x)qjxc s :qt. 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,;7fllb(6ba np 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 bn7all 6f pb(;on the positive charge at 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 nC is at (0, 0.10 m); Q3 = 5.0 zqjvwsep*rdbn /8 vlj4:9,g6 nC is at (0, 0). What is the magnitude of the net force on the 5.0 jpz vbd,r*jnwq69 vl/8s:e4g nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 =7;kn f6qel.g 7pqov *m;fmh5)skra(p -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 o7(q ln*7a mfrphqps.k6f; gkm; e5)vo n the 5.0 nC charge?

  Three identical charges of 3.0 mC arwvq: gq; a7xb9e placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrosgqvax9 q7 bw:;tatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what po4z n0;uaxi9hol+ltd2 / rl)biint, on a line between the two charges, would it be possible to placetl xbr 9lol 4 z+;i/)d0h2inua 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 = qflx 5h ;x.wp(mh: ;sx4.0 m. Where on the x-axis can a third charge be placed so the net foxm:hf;s(q ;. xpxlw5h rce on it is zero?

  Charge +2q is placed at the origin and chjs l-v8 1d7,vr +.blhp42 oy*zsofmvjarge -q is placed at x = 2a. Where can a third positive ch 1l-pjoyv.d + b8sr mvsj4l,ohfzv*7 2arge +q be placed so that the force on it is zero?

  A copper penny has a mass 3di3fxar, qq5n rhq 2-*0lcntof 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 4yo/m0x gjwi3 the attraction of a fixed proton some distance above it. How far jy x/gom34 iw0above the electron is the proton?

  Two 0.20-g metal spher;s r4kuu3-dq res are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion fosu4 -3rurdqk; rces 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 sosx 15l-0dyk electric field at a distance of lxy-0s5d1 oks 1.0 m from the nucleus?

  What are the magnitude and drcbjy12e,7 u eirection of the electric field at a distance of 1.50 m from a 50.0-nC by1ce,j 2eru 7 charge?

  A 5.0-C charge is 10 mrh. 6 xhz2t3 6ugqyz*bj7y d/f from a small test charge. What is the magnitude of the electz * q6h7ru2y.3y6 b/jxzgthfd ric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test cu a 4::ozoba1charge. What is the direction of the electri:zcb:1o4 uo aac field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of-a fk+9uon 3;q5lbox g the force experieo n9-oqu5glbxaf;3 k+nced 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 separated by a distance obdl84(dp7qdqb)v 7:vu g1 rdmf 4.0 m. What is the electblb):d rq 7d4dd7 (v8qvgm 1upric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0k1c.7*t :ab 0bnu-cpj:f kjg k cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cmc 0k1jub-pf ta:: *7jc.kkbgn mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stt ohan8 opan/yjvg(47( xhf 3*h089l6yuojx qick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is th8vnn*g hxua46tfoa0jloyh (xph q/7y9j 3 8(oe electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are plac;axb 9qg-m6oped at x = 0 and x = 0.20 m. What is the magnitude g- ob6a;mq 9xpof the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners9 tw/(c;12gskkauiu z of a square of side 0.50 m. The last corner zg192stik(u w; / ukcais 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 k.d3p/ otvrjtr m3io/ twrfnw,:3/ 4ddlua 09a 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 at (1, 0); -3.0 mCojf.n a r/49pd,r//witu oddmr3: 0v3 t 3wktl 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 elgifbg zuv*e 6)(( i79tl mew)mectric field. What is the magnitude of this electiimw e) gbt * gemz(vf6)l79u(ric field?

  A particle with a charge of 4.0 mC has adxd3 qnn24 btps-+8m4 (qk vek 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 of 60 7zt1/9f1lmb;r ml hcg00 N/C pointing downward. Whmrlb;/71ftlm c g9 h1zat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC.6(h 6b +:yp260x xax vgvdbqxc The ball is placed inside a uniform electric field, an(b 6q 2hg x0p+6bx6:cvyvd axxd 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. Whx3tk dgh4by +)qool): xnf q62at is the magnitude obqtodx fq)43x2 : hkl+og6)ynf the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3agi4-zvo2 ep-rju8s3uk8 o5 k.0 mC. What is the electric fu- 2 os3v8r 58kue jgpok-i4azield 6.0 cm from the center of the sphere?