State the law of conservation9x.hvj-+t epn .v 1ifd of electric charge.

  Is it possible for two negative chargep2 6pzmfk3o s/-gyikmw0o12 fs to attract each other?

  Is it possible for a pp2-t)nzn 9(aqmo)vup) ; uiriositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod ac6) kgw1ydc0q-f, 1wnpe dv i-y s9n/zsquires a posi10w/np9 gd dzesnsfkiy)y q- ,-v c61wtive charge and the silk

  A proton carries a

  The model of the atozq e1p qdqv/m: h4/61nwo m4yom shows a

  A neutral atom always hasd.rta;,: 59updqxoyo

  An atom has more electrons than protons. The atllfx hk6py:tj7 8thleq03a8v**s6c oom is

  Materials in which the electrons are bound very tightly to the nucleg-ri/y 4tag5 fi are referrr5-g ygi4/atf ed to as

  Materials in which the electrons are bound very lo- 9 hwpmfzy(-ojc-n3 josely to the nuclei and can move about freely within the material aremh9zcjp w-3yn (fo-j - referred to as

  A negatively charged rod is brought near one end of an unchargkzb)b4atd.z e6x5u kr* wt2t6ed metal bar. The end of the metal bar farthest from the charged rod will b4z 6 b*kudk2r b aw5.t6xtzt)ee charged

  Sphere A carries a net positive charge,izd0)dxx)8- p wu 6ufmno8ui) 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 grounded. Which statement i u8imi))z-u0w8do6xxnd)u f ps correct?

  How can a negatively charged rod charge an elwduhz.6(jy mq whj)k + z9.qtt5ek c39ectroscope positively?

  An originally neutral electroscope is briefly touched with a positivelkg +n92ha+r psy charged glashsn9 +kg p2ar+s rod. The electroscope

  An originally neutral electrosefc9k;2 xqo .f5x5fyb r-x8 97 trrgiscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod f-y.i c8qo92 f97srrfxk 5xe;gr t bx5is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separab2esp(8p j/)tk ,ovwfzj;+ps te. Then a negative object is brought near the electroscope, vj sz+pkt8 p()s;f/jpb2o e,wbut does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insu59d4tkxsz;d x lated 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 time4 ;5 kd9dztsxx does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb consta )mh3g :ykphs52c6jbs. o;02y p5rie8c e ydibnt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distanir(hi4ms) g dme kt:5;ce d. The first charge is larger in magnitude d(gki;st5 m)4:r hiem than the second charge.

  Sphere A carries a net charge and sphere B is neutral(t(:v tq8s qmosmp7n b x,7r.cdxa5d94bfxb .. They are placed near each other on an insulated table. Which statement best descriaq9vqbc top 7 bs(m.dr78:xd.5 xsm fxn(4bt,bes the electrostatic force between them?

  Two charged objects attract each other with a certain force. ( k:t* 6qclbko If the charges on bo*(:tc6koblk qth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distanf2+awl*glg( *bn i0 -li-niwyce d and exert mutual attractive forces of F on eai2 i+( g0wga filb*--llnny*wch 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. 5s54 b /+xg/ld lt/)hpwflzz kWhat happens to the force between them if one charllhz//x+w5l4ztp f /s)kg5 dbge 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 separated by a distance of 1.0 m. Whatlsy n d) bc,g/o6:da(u happens to the magnitude of the force on (u oya/c: 6gblnds),dthe 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 mwqs c7yy ;p35ps-5 wle. What happens to the magnitude of the force on the first electron if a second5 s7qlsp5-3 cew;ypyw electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 ycfe; )e1ek a,m. What happens to the size of the force on e y)efe,ac1k ;the proton 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. Wvws3nfg bvr 0o; )m16ohen 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 v og;6bs f wm3r)v1no0acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the hn8 j ukxg(+)s5go rn1centroid of an equilateral triangle. When a second charge ou(5n+o8n)s jxr1kghgf +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 vect qby*9 /4b c 4hvy/nf.zf+aqxitxe09oor?

  At twice the distance from a point charge, thk rlx.sw9h 5(le strength of the electric field

  Is it possible to have a zero elh8j0 n.s,e nivectric field value between a negative and positive charge along the line joining the tj ,e8sni. nh0vwo charges?

  Is it possible to have a zero electric field value between two positive charges aof ,4k vc9dq.7 9jruqalong the line joining the two 9rk7u,9ovaq4. djcfqcharges?

  Electric field lines near gyhce x6zyh77v:3p7w psitive point charges

  The electric field showned9 5,kzwr -fe

  Can electric field lines intersk0ue:lqwus a+; zc/s s,3:hsxect in free space?

  A solid block of metal in electrostatic equilibrium is placeds4kl7ed4a 5 z:xm+xl y-(5 yaxpkkf(n in a uniform electric field. Give a statement concerning the electric field in the xk+:zxf say ( l y5 -amxkn54dp7(kle4block's interior.

  If a solid metal sph0p ipg )y5a4tsere and a hollow metal sphere of equal diameters are each given the same charge, p 4gysap 5)0itthe electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region whe h ;vp)lxmtx47re a uniform electric field is directed straight upward. lm xt4) pxv7h;What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium nebp9trzu+)du k, n 80.cca9wx ear an electric charge

  A positive point charge is enclosed in a hollow metallichwvs .zq) j8pgk8 m;.y sphere that is grounded. As compared to the case without 8sz8p qy )mvh.j .w;kgthe hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductqdz (zv. )lekj7.xq* qors in static equilibrium.

State Gauss's law.

  The charge carried by one electra z+lh -,,*g hldw; dy.2cozbvmwgm3.on 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. Ho1zz7 0jupk( ujw many more protons than elejkz(jzu7 1u 0pctrons does this piece of plastic have?

  What is the charge on 1 kg of proto4x o9,sqtnaz :ns?

  An atomic nucleus has a charge gf6k zx((p 6pgof $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cmf:bgwnws(tmsk9pdc9 ,( xby01 bj *p:, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betweyn ws,91 bjbbxptwc9:* (kgmf:(0 psden them?

  A 1.0-C charge is 15 m from a second charge, and thosc9ub502qeq qz nks8y f4,ys ss.*d3e force between them is 1.0 N. Wh2 sqbq*803n k4 sdezqufsos.ycy 59 ,sat is the magnitude of the second charge?

  Two 1.0-C charges have a force betweeneqnls;i;q ac4(4gs-glw -/ pa them of 1.0 N. How far apart are they?

  The force between a 9wg7so1 oxj )h$30 \; mC$ 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 c rul+6+evyqq e4d5p- force. If they are moved to a+6elqp4c- dr 5qvu +ye new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-: 76 k jxuaaolc7o*;htaxis. 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 dir7 a:jxl hc*k t7o6ua;oection of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on eno +r +e8wa,b)q 4jjythe x-axis. A charge of +2.0 mC is placed at the origin,obr j+y+,4j)w8 aeneq -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 the charge at the origin?

  Three point charges are located at the following positi8d k-cii+ tmmg.h 0v3aons: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x- + g.c ih3m8akmtvi0d = -1.00 m. 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 squareay 5xr+srmtciwb3 8+*bf1xy:khj- m2, 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 positiv-:+5+xmi8xytb*fw m3 sy j hrrkac12b e 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.myq- 8my5r3q z10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net foy-rq8y3zm q 5mrce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC xhxi.j3ns.n 7 is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of njx3.i. n7sxh the net force on the 5.0 nC charge?

  Three identical chargesx xg(z;wyuk7 -s t.;rg of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which aug.(z;kgs wt7rx; x-y cts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. Atmljo8,jf 5; rnl(vah6 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 be h ;5,a8jfv rjno6l m(lzero?

  A +3.0-C charge is at the origin and a +9.0-C charge is//vko q.jy6srq()s n5cok ii0 at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is (yq6s)5/q 0/ivr kjsconk o.izero?

  Charge +2q is placed at the origin and c-f ylcwza8, ,wharge -q is placed at x = 2a. Where can a third p ,f8 wyaczlw,-ositive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A t qiq47y 6ssq0dotal 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 ofa m im,q:a.xvc3 o5q1s a fixed proton some distance abo q i1aoqa5,s:cx.mmv3 ve it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncond(a4x(0js uwvsp:(9x +iyt ,jvcne8 q wucting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle betsj( x qve8y: a+4jw(viuw 9psx (0,nctween 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 ofovd;;wqz pp2ysj. 3 9u the electric fisq.dz wv ;9 pu;23jyopeld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direkkt, x qc;5so xk,xm*:hnbn: -ction of the electric field at a distance of 1.50 m f*,ockkt ;n mx qkn 5:x,:hs-bxrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o, mxzuerls,hon *)v.;f the electric field at the location of the test chargnr; , h.m,*zxsolv eu)e?

  A 5.0-C charge is 10 m from a small test charge. What is the direction ofxag7z3/-pfrf6v) mlq3 z t5uf the eleq3/fx p3rmt 6ff a-g 7zvul)5zctric field?

  A 5.0-C charge is 10 m from a small test charge. What is tuo3;yp5s* vzkt .ux quoy2up +)sl,,y he magnitude of the force experienced by a 1.0 nC charge placed at the location yvps,ko *q2 ),yuu5 .lu z;pt3s +yoxuof the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distancdc)( bsdrh.l 6to /l2ce of 4.0 m. What is the electric field at a point midway bel/(ts2c6 lrb.o)dh cd tween the two charges?

  A 5.0-mC charge is placeeg)i tz31yqam/,zf6 a d at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at t3tzyq) /f1ame,i6 zgahe 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 stirc /m lmfs)p d 1yp/7vh/bk/o+ck and a -4.0 mC charge is placed at the 50 cm mark. Ar/c/+ /fbm)mdph/ op v 7ls1ykt 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 p6u jeny/40fa2 r*9 d. tcjmtix = 0 and x = 0.20 m. What6.cy dtf2u04 /9j *iperatmnj is the 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 0.50 m. The dx8zgpswu/3+qr8;l vnc ;tuu/j(ib ;last corner is //8+gp3xjz sdnu u8vtw;; lcuir (q ;boccupied 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 a side. Charges are placed a q re(7f5uxic) woes,gi;cj8:t the corners of the square as follows: +4.0 mC a oqw e7 if(,scir:x g);c8eu5jt (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 mC when it is placed in jvoww. zh4+jm3wxsv; f1zc 3/ a uniform electric field. What is thwsm;1+vvz/h wzo3c . xj4wf3je magnitude of this electric field?

  A particle with a charge of 4.0 mCw o0lv0uyowei:1-ju 0 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 plaui 1xh:y1djuq+o6j dk** 0 tcta, jvs/ced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended?ktq*1+tudsc0a ,i jd x6:yovhj1uj * /

  A foam ball of mass 0.150 g carries a chara:15qr84 rgida t oqpz t.m3 wid*vv2*ge 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 d* q :v 48dw2tq53 *gi. aztrmoiprav1direction of the electric field?

  A metal sphere of radius 10 cm carries a cqjd ah/8 k5r(lm+z. uu a5zi/aharge of +2.0 mC. What is the magnitude of the electric fieljhzdl zaau .58 k+q/ra 5i(um/d 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of(o+q5,zbmsm*9 vv zdeehk5 2a 3.0 mC. What is the electric field 6.0 cm from the ce9+ meqm v azzedo52s,h*(bk5vnter of the sphere?