State the law of conservation of 7o0ojfjdcn 8m3p) b *celectric charge.

  Is it possible for two negay r mdl/sr47)c yrraj4 pn2gwc;9;k a7tive charges to attract each other?

  Is it possible for a positive and a negative charge to attrac krnr(g1s.k, nt each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rodab51mtdm; p lgw;e .h/ acquires a positive chw5pdt. a;/ ;b1l mmegharge and the silk

  A proton carries a

  The model of the atom sho01uqu;k.w kdx2m tq e2ws a

  A neutral atom alwaysjh/xjc 91pj*vil (3ky has

  An atom has more electrons than protons. Th.p622zottd wve atom is

  Materials in which the electrons are bound very tightly to the nmzt*nn3wr k 7x(d c z6z4l.v2suclei are referred z6nc4d*mr 2nxt7z( vslkzw.3 to as

  Materials in which the electrons are bound v(umc6 rj w;gmdafem*1c y/4g8.rp i9pery loosely to the nuclei and can move about freely within the mg erum/94p .r(jd8mywfiam * 6 ;ccg1paterial are referred to as

  A negatively charged rod is brought n.+hlpw gr:l- s(hf gg2ear one end of an uncharged metal bar. The end of the metal bar farthest (2 s+fl hlg-w.g:prghfrom the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plvq)ml t gm(mapq,,5p 2aced near emtm,pmvqpl)5 gq, (a2ach other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively juwh ) hce/,i9charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivelrpe)e*/um brv q rq,//y charged glass rod. The e/bqer/e/ru mr*p, v)qlectroscope

  An originally neutral electroscope is grounded briefly while a positively charge,xpfx4n3 j rt0d glass rod is held near it. After the glass rod is removed, the n3t0j4,xrp xfelectroscope

  A positive object touches a neutral electroscope, and the leaves s ldq vt,fxns /f()8x9)oc;x sleparate. Then a negativ(ds; xcofl8 / qn )f9xlts)vx,e 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 *abt 8r(th13wsnex4 r 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 t1xn wab4th(rr3 s8 t*ehe 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 of5.ct0qy.scz; j2eym z the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated d;d3uno1t7v q by a distance d. The first charge is larger in magnitude tq;tu1ddvno 3 7han the second charge.

  Sphere A carries a net charge and sphere B is neutral. The coi14b7ht+ rty are placed near each other on an insulated table. Which statement best describes btho7+ctr41 ithe electrostatic force between them?

  Two charged objects attract each other with a certain force. If jju9 o4w t8*kuthe charges on both objects are doubled with no change in separation, the force between kj*9w4uo u8tj them

  Two charges are separated by a d rl -vl4n t4+coraxc5;istance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what corlt4;c l+4rn x -v5aare the new mutual forces?

  Two charged objects attract each other vxb.9l/ys kp1c .cir9with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and ryk/.c91vslp9b c.xithe 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. What happensg43q zaxtgg wl:4 v*1p to the magnitude of the force on the proton if a second electron is p4ga q*v3zwx 4g:1 gptllaced next to the first electron?

  An electron and a proton are separated by a distance of 1q5 ra)90m sgh xg.4qdj.0 m. What happens to th4mq.gaj)dx9rh0g s5 qe magnitude of the force 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 m. What hniumj6f(qn) 3 fp7 6ndappens to the size of the force on the proton673n6 nqp m)nfju(dfi if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the c(6hz fvst1.r(1p ), n quc9 5ua5fakvqqtpkf-enter 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 net electrostatic force acting on the positive charge at.(qphv5f q rta1-,q 1t9puf(k6)fcnz va s5 uk the center of the square?

  A point charge of +Q is placed at the centroid of an eqt peuukz ;s;a l9x).8puilateral 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 charge due to a third charge of +Q placed at one of the other)kpeux .;s a9uztpl8; vertices?

  Which of the following is not avo*mja3p7m o)b sic1,rw xg3p o8a,*b vector?

  At twice the distance from a point charge, the strength pnk3ex4v2 sv 9f8vo-f of the electric field

  Is it possible to have a zero electric f05 wzfm *it 54(kl,k ternuyt3ield value between a negative and positive charge along the line joining the two char tw4t0nfy kt ker(53l5zium, *ges?

  Is it possible to have a zero electric fie tz;yet 4atyt)d9 p.(qld value between two positive charges along the line joining the two charg)etay zt94t ; .(ytpdqes?

  Electric field lines nearmfqsn3v69 *cxhoo2c6vnn1, tq e0xu . psitive point charges

  The electric field shoi/l.99k, pvnvv0bm ol wn

  Can electric field lines intersect in free splkiy0df lk,vxvw8 7e nu p5- rb-qb4qr()4ou7ace?

  A solid block of metal in electrobi4go9s2n *vo static equilibrium is placed in a uniform electric field. Give a statemeg *ns b9i4o2ovnt concerning the electric field in the block's interior.

  If a solid metal sph2cu0- ;fp kx em(o3elwere and a hollow metal sphere of equal diameters are each given the same ch2(leu3pom cfw0e x-;karge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform01mi 9 zx:qk-fs4fp hm elem fz :-m4sfqkpx901hictric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriumjtt4:euid8pz5b /j 6 c near an electric charge

  A positive point charge is enclosed in a i1yg4 (* 7ob4qrhuglf hollow metallic sphere that is grounded. As comp4(f bqy iu*o47lgh 1rgared 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 sta/gl;a8b yg :qe7s6w)b nn vd8ptic equilibrium.

State Gauss's law.

  The charge carried by one ckvwwzcavd6xj6 ; 5v v6;;sze/;pt8relectron 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 proton+flrwv.z7,/ 5xyiz owh)g tj4 s than electrons does this piece of plasticwy+z7r 5.fo hglzvw)ix ,t 4/j have?

  What is the charge on ed4qup cjb,c*(ax:4:k /t yjw 1 kg of protons?

  An atomic nucleus has a chargevu6uyhj)4c.lzj ,x xu;q*w 6g 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 l29ku k2pc wp7iumy ,6and -4.0 mC, respectively. What is the magnitude of the electric force between them?ucy2,l9up 6k p7wki m2

  A 1.0-C charge is 15 m fromrlxoot/ q6-jga9y:74 j-axcodvd7q . a second charge, and the force between them is 1.0 N. Wha6lc7. 7jg /otojxx v-a-:dad q9o 4yrqt is the magnitude of the second charge?

  Two 1.0-C charges have a forcek4pzwemeb1 5z(ok q 9 4nzf0)o between them of 1.0 N. How far apart are they?

  The force between a 5 3ofl/-;qvg5q zafb i$30 \; mC$ 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. b ,y0z;i9xjdl If they are moved to a new separation of 8.0 cm, whaxbdy;9ji , 0zlt is the electric force between them?

  Three identical point charges of 2sqfk d2(p(o+o.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 magnitude and direction of the e(f 2(q+okdso plectrostatic force which acts on the charge at the origin?

  Three point charges are place x1i; boeif5tgp:s- 1ud on the 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 aciibsx-t5po 1gu:1 f;ets on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x- 5g,f j2wf iej m8oimy7dg(l6 = 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 for7 yjl i i8odfg,- wem25mfj(g6ce on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point j 5q(. ahwljfn.f)xc89depck w )n tpy:.:m. hcharge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the positiv.yhal: h8jnkqnjp)(c 9 5fc)wt dx w.m. .pe:fe 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 =w7dtt (o4ii a(cr7a7zn t c j9p9*o8yi -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitudec 9(4 o7ic*yw9 (a nt7di itapz8t7roj 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 at (0, 0.10 m); 3: g;fz2 7 lanbkqy/rgi/i4snQ3 = 5.0 nC is at (0, 0). What is the direction of the net force on t3ns:nbizry/i/a;gkg l2 q4f7he 5.0 nC charge?

  Three identical charges of 3.0 md )fzd:z6jv/al*wkm0w g (3f hC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force whwg/ad 3d0(jfh:) lwzv z6k* fmich acts on any one of the charges?

  Consider point chargesg6 rezg:i pcyl9,()a/)orzt nel 6xq9 of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the tt6,y)9( r)gzn earoel6 lzci:qxp9 g/wo 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 chaofs:osnfv 7:3rge is at x = 4.0 m. Where on the x-axis can a third charge7f:n soo3:s vf be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is pl0cd )hs 8fi9fwp5w 3pqaced at x = 2a. Where can a third )wp c58f3i9q0wfh sdp positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total 0yb indzbmk );aq,-:w z)f ct-jz7o )dof $4.0 \times 10^{12} \; electrons$ 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 thdc ll(,s0f3 juryoabq/ ;: n*pe force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the proton? luypqls(/ ;*o:3 rbn,j 0dcfa

  Two 0.20-g metal spheres are hunghti(j0z+ia14f x:o af from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle bet otix1a0h (fa+zj 4fi:ween the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the a hnt904ch vpto-a7 +-k hl r7,fpuj6cmagnitude of the electric field at a distancat0ph64-a7uljpt9 c 7hkvf,+- orhc ne of 1.0 m from the nucleus?

  What are the magnitude and dn(atk) -y- u7i dmrf7uirection of the electric field at a distance of 1.50 m from a 50.0-nC c-nrf-tukdu)7ma 7y ( iharge?

  A 5.0-C charge is 10 m from a small test charge.xy39j. n3hl qeck p riw*ft)e0*(. mhk What is the magnitude of the electr n k9p wq*.y)t(0*jicr k3fmehhel.3x ic field at the location of the test charge?

  A 5.0-C charge is 10 m fromdq3 8004 fe 3ggg-nm:tndqdbh a small test charge. What is the direction of the electri4qf30n hde b gg:td-mnq g38d0c field?

  A 5.0-C charge is 10 m from a small te6xisanu1k8z hus9ty vg6+ 7am qw3j*/ st charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the+/j izvhnwqm96a 1 68s7sugxy ta*uk3 test charge?

  Two point charges each have a value of *1sg) w bner:dtfy)r-3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point ms))db1:geyfnwt *r r -idway between the two charges?

  A 5.0-mC charge is placed at tht.55f/rzpzcl8r - fs y94*v lrhxuh5te 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric *t5r lfczzpsvh4r-x59tf5 ry/8 hu . lfield 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 m :d6ravf*qvt 7C charge is placed at the 50 cm mark. At what vtfq7r6*:v a dpoint on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are plac-a9wdxrbq s 7,;q8 zuzed at x = 0 and x = 0.20 m. What is the magnitude of the e 9s- dx;rzawzuq8q,7b lectric field at the point midway between them?

  Three 3.0 mC charges are at the three corni4nndbt,s) a -ers of a square of side 0.50 m. The last corner is occupied by a -3.0 mCi ab4dtn)-, sn charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. +6+luf zcnpe3 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 mC at (0, 1). What is the magnitude pu6ln+ec + zf3of the electric field at the square's center?

  A force of 10 N acts obcvhai ok;n9b7waxz,3 1k2k/n a charge of 5.0 mC when it is placed in a uniform electric field. What is the m 7w zo;b3k/kac9kvbh, ax2i 1nagnitude of this electric field?

  A particle with a charge of 4.0 mC has a massxm:13d 70i itcjjdtm. 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 60p45j fkd, *)cqvz0pxc 00 N/C pointing downward. What charge must5 x)v*zp4qfpk jc0c,d be placed on the ball for it to be suspended?

  A foam ball of mass 0.150l +q 9zk:gy tw97zzae2w 7sj(o g carries a 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 magnitude and direction of the eleck:( sg9e j72wyq97oa +tzzzlwtric field?

  A metal sphere of radius ie1 z4c aorszzu(x 992xxx/3v pav4e,10 cm carries a charge of +2.0 mC. What is the magnitude of 4u29o(9 xcisxa r/exzz3 ae1vzvx,4 pthe electric field 5.0 cm from the sphere's surface?

  A metal sphere of radn4:0alh lg4w8 xgblc. ius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the 4l .w al4h :lg80ncgbxcenter of the sphere?