State the law of conservation of elect+cou,z1r 5ca3tfdat ./sp r e*ric charge.

  Is it possible for two negative charges to attract each other? j,1omi9vg1za

  Is it possible for a positive and a negative fcwz5hm1bfg2kd6 ;n7a : )yp scharge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the gladzjmogrc q j .b*5g7)h; t0.icss rod acquires a positi 5rcz 7ij0d.g *)tmgj.chob; qve charge and the silk

  A proton carries a

  The model of the atom shows 3 x)bok+va8s a xvx(/oa

  A neutral atom always hasi .ff9 ey:uptf3 wk/p9

  An atom has more electrkgy5xys a - h6j5(hb*kons than protons. The atom is

  Materials in which the electron2 wi6.cl9vqrrny9j x2s are bound very tightly to the nuclei are referred to 26 c.9yrn rjvxwl9q 2ias

  Materials in which the electrons are bound very loosely to thevb8lajj6 i uh4,74bus nuclei and can move about freely within the materiv8bl6hai7js 4u j,u4bal are referred to as

  A negatively charged rod is brought xqlrfz wta*.,8oi6z 8ls k/+y near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chak a6lx/,ywizrf+z8t. 8sqo* l rged

  Sphere A carries a net positive charge, and spherf)t:ada/r- k8 ot;yzl lz tx26e B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a:oka6t) xz lat-d ;2r/z8lfty wire that is grounded. Which statement is correct?

  How can a negatively ch)g6ot iy fqe/v 9 0sb2jyrv1s59,of kzarged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a p,vftcrm l3(;q 9*cslz ositively charged glass rod. The electroscopezfs; (3cv,rlclt9 mq*

  An originally neutral electroscope is grounded brieflj sh7 hmg6:e:s(wa d7oy while a positively charged glass rod is held near it. After the glass rod is removeho6 hg :(7am:s 7sdwjed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Then5fa gq:,ci rt( a negative object is brought near the electroscope, but does ,qri :a(5tgf cnot touch it. What happens to the leaves?

  A large negatively charged object is placed on an pr/ rs 1;z r0w,8h kj.lios3rimo/ 3yoinsulated 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 bs/kj/;p,rl y ziohr r3wsrim.oo 3108y 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 Couloyx8 3mm/r vokcp6 (qv,mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first c-w 9j;xcq8jc 7dwmck6harge is larger in magw d;jcc8m7c 9q kw6xj-nitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. Th faah 2*qi;:hbey are placed near each other on an insulated table. Which statement best descri biqa h2;*:hafbes the electrostatic force between them?

  Two charged objects attract each other with a cer xt,qk(s;4 ftkql)cyoxz -t69tain force. If the charges on both objects are do4f-9 6)qttxx,sq t;c( z loykkubled with no change in separation, the force between them

  Two charges are separated by a distance d and exerqiw:pgwg+q(1 p x dcjcz97l) 9t mutual attractive forces of F on each otlwdcz(q:9+ggq ipj9cp)17 w x her. 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. What h 3ka+ fnun+bu.appens to the force between them if one charge is f3n +bu.kan u+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 distanr g+d,nmsna5a e +ee5ue2o/7nce of 1.0 m. What happens to the magnitude + / ernne2uo5am n5+,de7easgof the force on the 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 m. What happens to -)e3b*h5m7dn qopld jkm 8h 4gthe magnitude of the force q od-mhd5g348jh*epm7 blnk ) on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a dist h2p(fh3g,1ej fi8ga iance of 1.0 m. What happens to the size of the force on the prote2 ,gjih(h f3gp8 f1aion if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placndfb.ke:a 2+ as b20hqed at the 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'0fa k2haq b2bse+d: .ns 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 equilagn(o qx g7/i k6g3 euegc5bk15teral 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 placedgg7engo1u xc 5b5e(/gkqki63 at one of the other vertices?

  Which of the following is not a vecha) :fandbi+y7 ,on 0h ;xxcv5tor?

  At twice the distance from a point charge, the strength of the electric fiefco l: d.z(q+vld

  Is it possible to have a zero electric fie7n 9 mnv-jwb)(i; kvvuyj3z3j ld value between a negative and positive chargejumiz; bnv( kv)9y3n7 w v3j-j along the line joining the two charges?

  Is it possible to have a zero electric field value 0zs1/wyidt y3 between two positive charges along the line joiningi0 tys/zd3yw 1 the two charges?

  Electric field lines near psit jk,f*v*t p -kzwz:d6oive point charges

  The electric field sho zdnrno ipe-(gg c-7n )e3hy-+wn

  Can electric field lir t-eo( l2akrsz f5t :4hun0)enes intersect in free space?

  A solid block of metale*4cehv8gm: z;jgn4wrd o0 -u8k gc,b in electrostatic equilibrium is placed in a uniform electric fielech,-c0emk*bgn4848gzw ujd g:; ro vd. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diametercnzsj -,r b*;jts c1-vrrht(- s are each given the same charge, the electric field (E) midway bz--s*v; ( 1jhct rrsnj-,rtcb etween the center and the surface is

  A cubic block of aluminum rests on a wooden tabl.oy3v4 m +qf8sgwdtd2 m ;jn9sp7gz5fe in a region where a uniform electric field is do7.s9 gys2t dzjq5mpgfw n dvf+34m;8irected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrgvxm61 1rz* ;z 2;szg znw5qudostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallicxe 1 usqn6,ip, sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly abovq1e sn ,i6p,xue the hollow sphere has

State three properties of conductors 8bku .,7qf2i tr3zxvtin static equilibrium.

State Gauss's law.

  The charge carried by m6z p:s kak 4fayiuku67u:28sone electron 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 dc nz2z 0hgs; nnyoe;bkw+.)3protons than electrons does this p3g ; sh) z;0 ecoyw.nn+dnb2kziece of plastic have?

  What is the charge on 1 kg of pca5a5vonl t. 8rotons?

  An atomic nucleus has a charg:;g 9xq/zn gope 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 o zey65::r-kd hc ycvi0f 2.0 and -4.0 mC, respectively. What is the magnituhrk- 56zedc:y v0y i:cde of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwe+dxt1ehyi/q) k g dpf.6i 4(lxen them is 1.0 N. What is the magqgdi6+ k t1 (pxdf.i hye4/x)lnitude of the second charge?

  Two 1.0-C charges have a force betweet u(zu 8*iej,- s)il2gc uguw1n them of 1.0 N. How far apart are they?

  The force between a ;(pja13jyg i f$30 \; mC$ 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 2rvbh1p)so. j,m cmr-1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betwep ,.2c rvhjm-rsbo)1m en them?

  Three identical point charges of 24ng ..b yuprqoos;x2cer ;o g(( ,3qwr.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 electrostatic force which acts on the charge at the orig;gswrc,.n4oy ;o2(poe uqb. rq(xgr3in?

  Three point charges are pla4px m s 1cpm865k;x6ih1dkg kkced 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 p ;kid gpkmsxc6km151h4 86xk 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 folap(e(f ) zmnk)lowing 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 m. What is the magnitude(mnek)pzf(a ) of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a g(beopl ;lzkv5uw*- 2square, 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 onzlp5b( ok;wgl -2v e*u 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 =eb6u 2;d 3*b735kper jiwionv 5.0 nC is at (0, 0). What is the magnitude of the ndben7 p3265kr 3i*;iuovebwj et force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC ionl fk)jg+v/, s at (0, 0.10 m); Q3 = 5.0 nC is at gv) jf/n+,lok(0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at pqr3)su 7gs :te58gwj the vertices of an equilateral triangle which measures 30 cm oru7e tw:sg3qp)gjs5 8n a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +8ef /duh 2n d ;(combzoxv,*/2b*mdkd4Q, 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 electrostatifc z;xbenmh,/d /mk2*2b8dvd*ooud (c 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 sfcfi wp(ft6*w20-tc= 4.0 m. Where on the x-axis ca 02pft cf-* stw(cwf6in a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the:sy.2 xn7g0 u;wayp jx origin and charge -q is placed at x = 2a. Where can a n yujy 20gs:;x .7awpxthird positive charge +q be placed so that the force on it is zero?

  A copper penny has akasy;) t9 ndtp: 3)yer mass 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 against the force of gravity by the attractiona+ fam/.kd c0j )r2tuz of a fixed proton some distance above it. How far above thed/0j tuk+)c.fra azm2 electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconf ow gbg9(r0w-ducting threads which are 30 cm long. Both are given identical charges, and the elec0wbwo f-gg(r 9trostatic repulsion forces them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a chrr rv0h -214wmdpqjh(arge of +40e. What is the magnitude of the electric field at a diqmj4hprw( r2-10r dhvstance of 1.0 m from the nucleus?

  What are the magnitude and dirq/jkwjggy086 f fbsr au70-,w ection of the electric field at a distance of 1.50 m from wywa j7ggu-/k8jf6r q0 sf, b0a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charg u3srkt-2 t;guyu6vh/ e. What is the magnitude of the ehv3ukr/y su-ut;2 6 gtlectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is thep vhht8tr.,k;8 gh p/a5l(w(*ylbi ig direction of the eleb rh*,ih5ag wpgp/hil((t 88klty .;vctric field?

  A 5.0-C charge is 10 m from a small test char6kwdpp*//p j yge. What is the magnitude of the force experienced by a 1.0 nC charge pldypk/6 j/*p wpaced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated+ assn. dx3o +(ly q)c1y4mrgl by a distance of 4.0 m. Whatl o+ ac4l+r 1d()sq.yg3mxnys is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm hgs) wo-o :0huv9k*wrmark of a meter stick and a -4.0 mC charge is placed at the)g9r0:k oos h-wu*hwv 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 stiujlpc4bgohe .. :qb.xc+7z7i ck and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the el:g.e7i+.4c pzb.q7j bxou hclectric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0. gonew- oa:pih;1o+ /p(xng2 w20 m. What is the magnitude of the ele2gangw+1:(piohw o/ p ;o nex-ctric field at the point midway between them?

  Three 3.0 mC charges i,bg w w9sb):jt -*lqpare at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.:),i* bl sgptwjq-9bw

  Consider a square which is 1.0 m on a side. Chargo3di ykm;i j*:es are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1);*3yo;jdik im: +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 iap)4:gzoyxu8 xg2a 8a uniform electric field. What is the magnitude of this electric fielg x8 a:8a 4uypzi)ogx2d?

  A particle with a charge z6gtj3n(qd:4ka b (daof 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 in al97yv;yw4 pz+ )gphepn electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it tep9v pwyh 7)yz;g+4p lo be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.0i/sy klnq 73d3sn-b:x 0 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude a :s3 q-n3d in/lbxyks7nd direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 m q7:zyj+i)5ipj*m fu zC. What is the magnitude of the electric field 5.0 cm from the sphere's )zzipmuq5 7i*+j:y fj surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is t.1mff 7ol sn7uf:m-ishe electric field 6.0 cm from the center of thef 7.m ufns-m:fl7o1i s sphere?