State the law of con mb2;4cfzrv 17tsvg v7 y9wc6lservation of electric charge.

  Is it possible for two negative charges to attrazh8)3 (b2lufhnjr. xu) wcsr2 ct each other?

  Is it possible for a positive and a nega;8 u;eceqpd ldy9( y-dtive charge to attract each other?

  A glass rod is rubbed with a piece of silk.in 4 l5c4wvnf, During the process the glass rod acquires a positive charge an4 n5v,clin wf4d the silk

  A proton carries a

  The model of the atom s9 zzvgs x(jz)/hows a

  A neutral atom always haskrfki/-hoan4 u1 mz* 5

  An atom has more electr o3 5anbqqf .hw. grsb1i0d*e(ons than protons. The atom is

  Materials in which the elec6ygxbg4+a 9r jtrons are bound very tightly to the nuclei are referre+yx6bag9g rj4 d to as

  Materials in which the electrons are bound very lol uz wvq aws8f**55x4qosely to the nuclei and can move about 4a5 fsv wxq z*uw*ql85freely within the material are referred to as

  A negatively charged rod is brought ne;f5q /ao( 1 o3wxmr b+inx7omoar one end of an uncharged metal bar. The end of the metal bar farthest from ; qn35m7a 1fxbo(/io mxo+worthe charged rod will be charged

  Sphere A carries a net posit8 c76a+ tdpoyfl,1kp mive charge, 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. Whptyd6omkp1,+a f8l 7c ich statement is correct?

  How can a negatively charged rod charge an electroscope positiv ; wg gbm8nijqc mn7;3;*u(itxely?

  An originally neutral electroscope is briefly touched with a positn+,cek7ccu; x ively charged glass rodux; 7nck, ce+c. The electroscope

  An originally neutral electroscope yo ck *fw: )bhmk;.zinac.*:e is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed. :h bck:y)i* na;fmc*woz.ek , the electroscope

  A positive object toucswlkhn(4 wa)0xo4cak g2;w6qhes a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Whak046 ;w l)an 2ck4q(hgowswx at happens to the leaves?

  A large negatively charged object is placed og qg wwmfvz7bvh94;ii v1hme871*we :n an 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 the first ball, and stops. The first ball rolls forward, but does not touch the negative object. At no time does eithi v9vb1vmw4g wqwe1f *zh e;7h:gi87mer ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units o .xvj fv0w9s*)9lkll.ej7x8andlsi5f the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated bytd9wbg6xr )dy *h;p2z a distance d. The first charge is larger in9x)gr y tdp2;hw*zdb 6 magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near e)ymu6-o;o uq)2fa:l o0gi tpxach other on an insulated table. Which statement best describes the electrostatic forciqoy)oa6po u 0xlt2u)mg- f:;e between them?

  Two charged objects attract each other with a certalw7cclvjh6 6*in force. If the charges on both ol6l* v6hcj7w cbjects are doubled with no change in separation, the force between them

  Two charges are separated by a ditcz3 )f):5a opxjq1jzz* d /zcstance d and exert mutual attractive forces of F on each other. ) /*: txz)oc13qdz5 jpzzcjafIf 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. Wrers+gg); e t1hat happens to the force between them if one charge is doubled, the other charge is tripled+)rtsg; e 1rge, 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 2lifnn pt;ej2o t8ubpf c r.*+hc43o8are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first ele . b; pn8te8uthfcr+ ip*j3oo 2c4nlf2ctron?

  An electron and a proton are separatefxc3*ztp ug -3iqz+/xd by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electronuzx-c3 fz/ 3+tqg ip*x is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 az)b w5 z0dz2km. What happens to the size of the force on the proton if the electron is moved az z0)wdzbk52 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second pros qn:jxv-d)4 w9j9boint 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 t q box dwv-jr9)j9:ns4he 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 tri ( c5i38ndm0b.,xfzjgtxp5 z oangle. 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 otht. of zdnzi 8b3(0jxxp5m,g5 cer vertices?

  Which of the following is not a vectn) r dm/1d)qrhor?

  At twice the distance from a point charge, the strengm8g++ 8e mu7dqvrwe*h e r:yy):idg,sth of the electric field

  Is it possible to have a zero electric field valmj1. r ,v-qi+/+h;iybtaxq r iue between a negative and positive charge along the lij /rraqm++ .tiiy, iv-x1b;hqne joining the two charges?

  Is it possible to have a zero electric field value between two positi:: hk-96w dvib imqtnxr82p tf+ 1ev(vve charges along the line 6we:v:fiv-ix2m1dq+tr h pkn(bt v89 joining the two charges?

  Electric field lines near psitive point cha z9:b -cahwlu.rges

  The electric field shvk e 8xm,kk*2zown

  Can electric field lines ink; 9orz va*u:v p3o:vatersect in free space?

  A solid block of metal in electrostatic equilibriumo (oj8 j)nczs9ps*t 41zsrn w4 is placed in a uniform electric field. Give a statement concerning the electric field in toz1swz)4p cs8*4(njn trs9 j ohe block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diametvwu)5p cc 2 sxp,u)m,mers are each given the same charge, the electric field (E) midway besmvc,)x5 2u,ppwmc u )tween the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform elitm r4( lb-3s ley9k4 gc9yg2uectric field is9kge mlu s-cry(gtb9 44y32li directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electr 9mb) yyqmw--tostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow dk4o)qgwt* l- metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere hasl4gqw-k d* o)t

State three properties of conductors in static equiiu,u 29jvv3,i upd1 zblibrium.

State Gauss's law.

  The charge carried by one electron zmbnqe8.5rbhl:u6v) 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 mo1fb0 sq;6 h43e twernare protons than electronsr64e qasbn1t;fw0h3 e does this piece of plastic have?

  What is the charge on 1 6,-a0*unbszn7v re1 sl0 13revrakkq kg of protons?

  An atomic nucleus has a cha oitqdwq / 7-)exfq)r*rge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated bytdfi n(8 *zz8i 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric *zz8nd tif8i( force between them?

  A 1.0-C charge is 15 m from a second charge, and the forcen* 6.ny )u55vk+ wqhwbq 7xqa8*ubopj between them is 1.0 N. What is the magnitude of the se)q*8 +up5ab hxuyjwowv6 nn.5kqq7b *cond charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart 9x83fu qw0o) :gmjv5ndejw fjam/4 (t are they?

  The force between a n-p/qs;c lxd 3$30 \; mC$ 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 ts:hrp,usvn*-*xp 4 nxm;v gwlp 5op:)hey are moved to a new separation of 8.0 cm, what is the electris:nps m4u**l5 h;r:p povvxpwng)x- ,c force between them?

  Three identical point char iw +abtxx4b5skl b5 ;r38rvz,ges of 2.0 mC are placed on the x-axis. The first charge l z 4xb583i,ba + vrtw5k;brxsis 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 origin?

  Three point charges are placed on yl(y +iotsc rvq0b6 w2w7r- ;othe 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 whichb+cy q vwwr0(-o7r2y6 to;lsi acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 =qo4 jy:w..y 9,zdvyt v 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = y.o4,wv y9jdz:y tqv.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 the center of a square,4w*vjwxu jy* j )5ylt*z0h .cs 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 on the center charge if a third charge of -Q is placed at ths5**v 0wuy4.*xltcjy )h zjjwe lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (;0lkap9wwx-d8uo1o5yh o hf 70, 0.10 m); Q3 = 5.0 nC is at (0, 0). 5uyol wd-ah0okox;f 8h97 1pwWhat 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 at (0, 0.10 m); Q3 = 5.0 no q/;p:v8r y aq;abib(C is at (0, 0). What is the direction of thrvqa(;8b:yq;a pi ob /e net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at 8vz1bnqa9p j+the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic forc+a b8vqz jnp91e which acts on any one of the charges?

  Consider point charges of +Q anib md 1ugh06- 3tu1omx*qnrb,ni ) +ljd +4Q, which are separated by 3.0 m. At what point, on a line between the twm+guinjmx*db 0h3, ) rt6i-qn ub1 l1oo 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 ori(zf(8ja- o q+cu2*njqwu ox3agin and a +9.0-C charge is at x = 4.0 m. Where on tj(oj+-qu2( wf qz3 uocaa* xn8he x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and ch1y jkrlp5 u:u8.gbve/ arge -q is placed at x = 2a. Where can a third poy ./er15u8pbkg:v ujlsitive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. Abnoi +t r,qw-qnct 9 cadc l(i1v*o0-3 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 attr ul7d6 *k9+:v )gfqhdw0 wghnvaction of a fixed proton some distance above it. How far above the electrv6:n0f huwhgv7 )9 d+qlg *dwkon is the proton?

  Two 0.20-g metal spheres are hung from a common point tb m b)uk579wzogc-z3by nonconducting threads which are 3 w95ok u7b bz)z-cm3tg0 cm long. Both are given identical charges, and the electrostatic 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 charge of +40e. Whai* b/kvd 8stv :04hlftt is the magnitude of the electric field at a distance vt8i/hsftvlk*b d:04of 1.0 m from the nucleus?

  What are the magnitude and i7vbe zjdx0 d-3/jsi3direction of the electric field at a distance of 1.50 m from a 50.0-nC c iz 0di3bv3- sedjxj7/harge?

  A 5.0-C charge is 10 m from a small test charge. What is tl7.ugfc 8(xc)zlf cj ;he magnitude of the ele(fj8 czl)gu;xcl. 7 cfctric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction ofpr7qkqbtyx1r; ao(7.5kx tv 4 the electric fi 7o7y5 . bka1xv4qtqp k;tx(rreld?

  A 5.0-C charge is 10 m from a small test chargx a.ee9:e yeov v(zx63e. What is the magnitude of the force experienced by a 1.0 nC charge placed at the (.eaxeex: ve6z 3 yv9olocation of the test charge?

  Two point charges each have a value of 3.0 C and are separatlzk2 bbe52-7pe7se/t7ygy ,qlu z tt*ed by a distance of 4.0 m. What is the electric field at a point midway between the twotzgzy t,te 7bpkqy e2/5-2el7s 7u* bl charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 m.ovy 7b qhx(/f ikgx)9C charge i97vh)xgykq(.x /b ofis placed at the 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 ox vw-hf12kp1+nv9xwa f a meter stick and a -4.0 mC charge is placed at the 50 cm mark.pk-+x nvfvxa9w1 1h2w At 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 x = 0 and x = r3 hkk,v(o ab u2l9k+a0.20 m. What is the magnitude of the ell o+k,r3v9bua2a k hk(ectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a sq nfo0f3*s+ isuuare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the cos*ff3+i 0u nsenter of the square.

  Consider a square which is 1.0 m on a side. Chnjicy./xf r 4u6o9kw. arges 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). Wha/6i f4uywcj.r no.kx9 t 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 3d3g u;xpl 6lmiq4wyxj(u)n6p0/mfda uniform electric /xgy lmw6 q uxud(j3fp60)4idmpn l;3field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass ofwnsz /:jg : )art)+djs $5.0 \times 10^{-3} \; kg$. 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 g/ tf6 3no)dw7bh4gup field of 6000 N/C pointing downward. What charge must be placed on thdf)gwou7 p6h 3n/ bt4ge ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chargc-v)3kw40xnlml xnz 5e of -2.00 nC. The ball is placed inside a uniform electric fzl 0 k-5vx nlxc34wnm)ield, and 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. Wr3 l) z-m,cij j).vz3o ygjt7dhat is the magnitude of the electric field 5.0 cm roi7 )dtcmvgyz3jl.-3z)j,j from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electr9ea .kjd; tyf5fj 46 e5zb.rqzic field 64fjz;t zq65. efkab de5ryj .9.0 cm from the center of the sphere?