State the law of conservation of eleoo i96 sk+*yy+et.ek cctric charge.

  Is it possible for two negative charges t6 loqikq.h2a (tey91to attract each other?

  Is it possible for a positive and a negative charge to at+ j hj+tr/y2pftract each other?

  A glass rod is rubbed f 8ee7 vqtn)o7/4xvfg inla,, with a piece of silk. During the process the glass rod acquires a aq 47 x tioe/v ,l,v)7geff8nnpositive charge and the silk

  A proton carries a

  The model of the ato9u30e, c eyscxj.6tnmm shows a

  A neutral atom always hn*sn9 h x/:bpeas

  An atom has more electrons th5k pa1r.s)owhz l* x(han protons. The atom is

  Materials in which the elep1ls00 cpx6ro5 7 foc(j.m zdkctrons are bound very tightly to the nuclei are referrp 50rspd7.jo1 o 6x0 mlfkcz(ced to as

  Materials in which the electrons are bound very loosely to the nuclei l9y i6io/yl )p3k* zq: b:ndfeand can move about freely within the mi*pe36yik/ bfzn9 y ol )dlq::aterial are referred to as

  A negatively charged rod is brought near one en6 onnmkj26p j;d of an uncharged metal bar. The end of the metal bar farthest from the chnp ;j66o2njm karged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral.drjt x-4 i by0b4n::qq They are placed44bx :bqd-y0i qjnrt: near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charge5 qj0ixhm8 /supk-w37 blat 6td rod charge an electroscope positively?

  An originally neutral electroscope is briefl 1djdw3o 4psav-ezm q72os/h7y touched with a positively charged glass rod. The elec-vj1 3wa /zd7o7qsosdpm2he4troscope

  An originally neutral electroscope is 71q v4 +p+29 h4bquxzdx bmqpagrounded briefly while a positively charged glass rod is held near itb 29h4u dmp4+ qz7pqa1xx+vbq . After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Then lse r/ *lb2(n1penly/ a negative object is brought near the electroscope, but does not toucr bnn/le 1*l2lpe/sy (h it. What happens to the leaves?

  A large negatively charged object is placed on an - 8wev uina693 k(hhlcinsulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the pa69ahw i-k 8(3hv nulceth 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 Cou iy m-2;-ynviolomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distancw c*k/msj7,gr e d. The first charge is larger in magnitude than the second chaw7 cm, *gjsr/krge.

  Sphere A carries a net charge and sphere B is neutral. They are puh4ag z -zai9n.+ u3qzlzv; *a43qkh placed near each other on an insulated table. Which statement best describes t. a4l auhak 3 zgpvuh3;+i-zqnzz*9q4he electrostatic force between them?

  Two charged objects attract each other with a certain force. If theqd55: ve t4p f6(nh yr25lerfaev*bv ( charges on both objects are doubled with nf f(*bq: e2er55vp46 de5ravtyhlnv (o change in separation, the force between them

  Two charges are separated by a distance d andcee lo3do.om z mw1fd*1,f9 w) exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are tedfmdo1*) , ww1cfz.ol e9o3m he new mutual forces?

  Two charged objects attract each other with a force .:jk3tdik e3o,v)r4xh c8yse F. What happens to the force between them if one charge is do4 i vsc,he38ytk3 :de.xojrk)ubled, 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 b/td-mj*w t6a +pdan0n6oz/h distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed66* nbnmttaz//pw 0d+hajo- d next to the first electron?

  An electron and a proton are s8mgcvb dqiy0b65h;mb,m ) )ligy63 bjeparated 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 bb; 68v0)ymmgli h 6d5yijbcb)q3gm,proton?

  An electron and a proton are separated by a distance of 1.0 m. What happhpon 57m(7rgcens to the size of the force onchmn rp 7o5(7g the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at t 2u/tk2b(f ypdyoa w;:he 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 squaydf; w2bupatok:y2( /re'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 of an equilateral triangle. Whe z9yjypafwfv 1e,2 /7h:r0wsv n 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 forc ,0wwj pr1a9syf f/zvh27ve: ye 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 vectam g2+q9qc dz;or?

  At twice the distance from a p82i3tvwb4) . e soyj ts9vr8se vt5w.c du9u8loint charge, the strength of the electric field

  Is it possible to have a zero electric flho0l b* j 5;cag22xruield value between a negative and positive charge along the line joining the twl bg0hj;l ru5a*c22ox o charges?

  Is it possible to have a zero electric field value be .0w)mbclighy: aqz 2-5j;4i1 9fafmusk 0hyw tween two positive charges alo 0amskfi5.z02bf i:uc-g4ywj9wlh;q)ay 1 m hng the line joining the two charges?

  Electric field lines near psitive pointp9 czvmw g4 hrqj81 wk/lo9w3* charges

  The electric field s 1 ddpbaw2b:vc ,,m1yxhown

  Can electric field lines9.domk +thhbw f(g-/he/ o;byez+ d5z intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniformx s9szmi9f.0kjy1i-a electric field. Give a statement concerning the electric field in the block's interior. xmj.10 k-siafizys9 9

  If a solid metal sphere and a hollow metal sphere of equal diametersb*uol3 fk 0mi3 are each given the same chaokiml3u 0*f b3rge, 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 uniform 4rwa6kil :zip8xu(k; electric field is directed straight upward. What can be said c4kikr a6 iwlz(p;8:xuoncerning the charge on the block's top surface?

  If a conductor is in electrostatic eqeggx viqp o/v;6/wf*cb3/j l: uilibrium near an electric charge

  A positive point charge i 4ue vc*gyx2f/s enclosed in a hollow metallic sphere that is grounded. As compared to the case without they/gfu cve42 *x hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equnalnj . w8hozgh 3*6l0ilibrium.

State Gauss's law.

  The charge carried by one e4hz1w n7h(fdp 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 proto7nx4ls4iqi1jz fsn/g79b sou rs,38 ins than electrons does this piece of plag ni1,br j7snfi4zuss7 l4x/q8 39is ostic have?

  What is the charge on 1 kg of pr1ec d p epi:m00-xopv5otons?

  An atomic nucleus has a charge opg n o3y;;gc9zf $+40e$. 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 chargeh5my(p( sizbvj9z 5o 2 c;j2kb values of 2.0 and -4.0 mC, respectively. What is the magnitude of the 2 (bzh(vzo5c9 k 5j2bsy mp;ijelectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the feby( ldm;e v/*p2xm,ukp0xw y)vd fz ;x(:1bgorce between them is 1.0 N. Whaxxf)kl2 bm,ye;1d/pg (m be(yp0 v:udz*;wvxt is the magnitude of the second charge?

  Two 1.0-C charges have a force betweenlr, 1rva x;mlls /:9xl them of 1.0 N. How far apart are they?

  The force between a p+, dt37:i2q.hq7 rjsc pb1h1 bkhk wl$30 \; mC$ 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 thu: s0nassn) t o4x9*ytey are moved to a new separation of 8.0 cm, ysnsus an0 4ttx:*9o)what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fi3hz yz;6n6v hd6b33ixlf fg;ae,gik+ rst charge is at the origin, the d66 gzh 6afhe ;nxyfk3v ;g+ ,ilz3bi3second 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. A charge of +2.0 mC is placed a* h8 u6f/wlxnut / fuuwl*8n6h xthe 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 acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x = munmyi43- zfx ;8(mcrn ;c 5pp1.00 m; Q2cximn 5;m8cru;( ynz4 -p3 mpf = 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 charge?

  A point charge of +Q is placed at the2etonsz/ wu on 6zm;cpt 8d:33 center of 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 cn 36; dtom: wet8usz2/onz3pN acts 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 =u i ojj-mh7j6k4 fa.*x -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). okxh-u*jm 64ija j7 f.What is the magnitude 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.pe /b g9/,kowfh.x ps at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directionh.,xp bso.//p w9ekfg of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 4/hwsl8 z5j nlj kw,i9mC are placed at the vertices of an equilateral triangle wz9l8shj/ il5j 4n,kwwhich measures 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 and +4Q, which are se2t z1 qjkkn1 sqe/15jhparated by 3.0 m. At what point, on a line between the two ch/n1 k5h2jsqq11 ejkzt arges, 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 = 4.0 m. h 6q ymy0;,mat:7xm,gn kt6s i Where on the x-axis can a third c0y k :;ixqy6at7n ,hmgs, mtm6harge be placed so the net force on it is zero?

  Charge +2q is placed at thmcw:s4p) xx db *p4b.oe origin and charge -q is placed at x = 2a. Where can a third positive : .cp)sxx4*dbom 4b pwcharge +q be placed so that the force on it is zero?

  A copper penny has a masscyj e- wnr9-d:9mr -fk of 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 agtxyu pqj7q+0 )ainst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is thjy+7qutxp )0q e proton?

  Two 0.20-g metal spher(vynz 0h w1-3l0wyafq es are hung 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 angleyqz-1hv0 0ww(y l fa3n 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 nh/e 5,,kdm)7ns x+ nnismis:magnitude of the electric field at a distance of 1.0 m from the ne)7+siks n/mnis , xnnhd:, m5ucleus?

  What are the magnitude and direction of thesib8 8s:9idk 38+cinukx l*pw electric field at a distance of 1.50 m from :i+ iwk3bpnc9 sidu x*k88sl8 a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is trsyk7wamt. 11 phz,9p he magnitude of the electric field at the locat7z.y a p91rm 1,whtkpsion of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of+ako nd3 ek l0qe/7sa;he 81kh the e oq +1nk3ee0a ;e 7kalkh/s8hdlectric field?

  A 5.0-C charge is 10 m fromo5jj l7w :9nwy.hkdy 8 u5l+vq a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge5odq8l+w7 v:u l5hjyny.9kj w ?

  Two point charges each habc voz n(o 7;(wbc)1a,hyns w-i(tv5mve a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two751 wb,-(ht) z(as y(;imvocconwbvn charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and af/+hp7: v) .mv/k6fgwtrfyn x -4.0 mC charge is placed at the 50 cm mark. What is/+wvxf vnhy pgtf.mr)/7f6k : the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the tquu28wpgv 2 yeak.03 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what v32aw0gtq2 ypu8u .e kpoint 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 =nbf v g09ug-rz,qc, .m 0.20 m. What is the magnitude of the electric field at the pointg qvmfrzn,b9.-,c u0g midway between them?

  Three 3.0 mC charges are at the three cornm;nu2ldr/7;t/n t ) kpjyckp,ers of a square of side 0.50 m. The last corner is occupied by a -3.0 c;/tt/pnkpmn2 y7;dukj )l, r 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 at the corneg s4fu 2h3uttyz2)k t4rs 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). 2 utzy4 gt)k2s fut43hWhat is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mCuctx r b;g74u( when it is placed in a uniform electric field. What4;c(b 7xt ugru is the magnitude of this electric field?

  A particle with a chargmb hi;: i0ahfi4/o8nc e 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 2tj b/ aohg s00m-bnc*g-xclgf9;.tk in an electric field of 6000 N/C pointing downward. What charge must bcco;j - /xg2s.0tbgnh b0t9l* k-gamfe placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g skb.8fph(7tb1mti01. dgyc hck 7pt ;carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of g70c (ik1m kby78 h ;sttfgpcdhbtp ..1ravity. What are the magnitude and direction of the electric field?

  A metal sphere of rad(hmsm ei u(9/wius 10 cm carries a charge of +2.0 mC. What is the magnitude of the electricw 9mui(sh/e( m field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. W gbu2i x6f8eo:* jjw-khat is the electric f:-bxj*k i68wu f2go jeield 6.0 cm from the center of the sphere?