State the law of conservaqp7(wbff75lh tion of electric charge.

  Is it possible for two negative charges to attract each otb- wtc8fjb9-ufm55m+z ,a x pqrn ;t+0idd5tmher?

  Is it possible for a positive and a negative charge to attract each otheyn.(cj.hgq*uhq3j/ xz)) +cf o)x ytwr?

  A glass rod is rubbed with a piece of silk. During the process theh +a jkp j8p+20h/vadr glass rod acquires +k v0raa2d8pj+hj/p ha positive charge and the silk

  A proton carries a

  The model of the atom sh 2(qy:;r 5ra:qi18figdv nyob 510:ziv m gahfows a

  A neutral atom always hasy6 (tloi5e(s.i2 7h9wtouk gp

  An atom has more electrons than protons. The atastjz6s 3;j hzn rz*27om is

  Materials in which th. cq 3;a otw6m88o n;dfkfo)wryl2o9re electrons are bound very tightly to the nuclei are referred to;oy;crwf )6nl o ro 23.9awfm ktqdo88 as

  Materials in which the electrons are bound very loosec e+*: kc4b pvgbg*r1l7vpr:nly to the nuclei and can move about freely within the material are refc rr1:4vp:n bb*7+*v pg klcgeerred to as

  A negatively charged rod is brought ne(gzd6 c 0;pmxtz,.gwaar one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will bew0azp, 6cg md.g (xtz; charged

  Sphere A carries a net pos:rc.8j q+ ctqnitive 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. 8.:jqr tq+ ncc Which statement is correct?

  How can a negatively charged rod charge an4-y npfd m4a /d)l-av*s;pl uo electroscope positively?

  An originally neutral electroscope is briefly touched wi)y99nlzsp: ez2 fdb( sth a positively charged glass rod. The electy2seb9)( :zlpn s zd9froscope

  An originally neutral electroscope is grounded briefgje 3jp,3*k,d17cvu - t ybepjly while a positively charged glass roekuj3,ytpge*pj1d 7 c3-v, bjd is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Thejw42 poz9t ,zcn a negative object is brought near t,z 2z4pjcwo9 the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insul/9(l da4ffnda ated 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 either ball touch the negative object. What is the finl/a fn9addf4( al charge on each ball?

  Charge is

  What are the units oubjc02 oiso2 .i c0r,zf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge inzx7sb mqu2)-s larger in m z m7-qu2)sxnbagnitude than the second charge.

  Sphere A carries a net charge and spher,g s mw)1aq.yln0: yife B is neutral. They are placed near each other on an insula fmn)w g,: i.0qyl1ysated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain 3 py3rqn 9-dol2che(jti1nr ;force. If the charges on both objects are doubled with no change (1jpotcn r3h9lyn2 3;dr iqe-in separation, the force between them

  Two charges are separated b(,d n;f tmz;jlsrgq81 y a distance d and exert mutual attractive forces of F on eactrfql g (;zn sd8;m1j,h 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. What happens toiv5n/q/ (odp v the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original value?ivq5dp//n vo ( The force is now equal to

  An electron and a proton are separated by a d)8*bpcu zrm-r istance of 1.0 m. What happens to the magnitude of the force on the proton if a second eleb )c-mpuz8rr*ctron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 slsh*i 2//b9pj:qn+m8gc z4wkyl/ t a m. What happens to the magnitude of the force on t9c iq/g8*/zsjylpkh+wnasl/ b4: 2tmhe 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. y my*n3qdgzmb 39g.)g What happens to the size of the force on the proton if the electron is moved 0.50 m closer to theggm39m z nb.3q*)dygy proton?

  A point charge of +Q is placed at the cen7vp)5w z6hsat5mtv :v:s3e rp ter 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 cornev)3:ep :ahs v5tvp z7stm65wrrs 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 )8)pkju r(rfeas(m j1 triangle. When a second charge of +Q is placed at one of the triangle's vertices, an e))r1ef(u 8 kjmr sp(jalectrostatic 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 d/9kktey -r )ris not a vector?

  At twice the distance from a point charge, the strength of the ((b3a bjt-e j pa0vre4pd8sg )electric field

  Is it possible to have a zero electric field value between a na +.6i+ytgqigegative and positive charge along the line joining the tw ig6q++ya i.tgo charges?

  Is it possible to have a zero electric field value between4h5;g0ox.zr+j2j5 le dxhkym two positive charges along the line joining the twx k0lmj4hoy2dr+.x hg5j5 ez ;o charges?

  Electric field lines near psitive poim5 s6 mjy5 q tp1cxi3i5xp5;gent charges

  The electric field she,3: ,fkj/c3p flejnh)zu*-6 smq b jkown

  Can electric field lines intersecd4 g1meciu)bx3 q3 -vn:u) dgkt in free space?

  A solid block of metal in electrostatic equilibrium is placed in a u s*5tp5a(nsa-ltg )i jniform electric field. Give) laag (*nitsjt -s55p a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters hm**kkwhmhp i ob,8tbe+7 +2vare each given the same charge, the electric field (E) midway between the center and the surface isbh tophw*k2mbm ,+he*v8i7k+

  A cubic block of aluminum rests on a wooden table in i;t gk+4y k8nqa region where a uniform electric field is directed straight upward. What can be sa n;+kqtyk 84igid concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an e) sti9gjo ( 2ktybs*n4 o1q)xblectric charge

  A positive point charge 6v-t2dkaor cm.k22v rgn dm6/is enclosed in a hollow metallic sphere that is grounded. As compared to t.t k/d mgn62 -vcrdv m2k2ro6ahe case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in staa7vhi*4soxkcn e, (3j tic equilibrium.

State Gauss's law.

  The charge carried by py7 c (w/)5vbp ammj+jone 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 mk3.7xcmjz,v. sjvg :eany more protons than electrons does this : .emcgvx7sj.3kzj , vpiece of plastic have?

  What is the charge on 1 kg.ul29 o -dueak of protons?

  An atomic nucleus has a charge of hzxpy- f5ms du sw-e )t7/(n1wtz3wc5$+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1hs)173e.9 crpxpy;,8:b amffqz zls c.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betw;szrl, p3azccm7ef. 8p qyb 9:x)s fh1een them?

  A 1.0-C charge is 15 m from a second charge, and the fog1e()is-jjx)gt ncmmd j9rvw **4ry +rce between them is 1.0 N. What is the magnitude of the second chardsr(j1y gt) 9m*4c)gvjnxe -wmj *r+ige?

  Two 1.0-C charges have a force between thaeuw21v pk8 idm(t(x2, zh4fe em of 1.0 N. How far apart are they?

  The force between a j3 :sy;qf-bgo$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially/ ebx4qfqyefxf0vh (*+0f o02rog ,cs 2.0 cm apart, experience a 1.0-N force. If they are moved tyffs0cbhx f0eqr/+ 2e,( *xgf4ooqv0o a 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-axis. Tyvtzf r9vpm d;oww ;r *b-,30xhe 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 ac*fwv,zpyv0m wr-d 3;r; bx ot9ts on the charge at the origin?

  Three point charges are placed on the x-axis. 0 j)gru9g1ls mA 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 m90r ls1gmj g)uagnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges arc4d.,c,,vxiim; a c jjq/cwn7 e located at the following 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 of the force q cv, m,7inx wc,ad.4c/ jc;jion the 3.00-mC charge?

  A point charge of +Q is placed at the center of a sqliz: p i:0vz-quare, 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 centel0:p-qvi:z zi r 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 = 5.0 nC is atau 3 64wv(ll a.6glqou (0, 0). What is the magnitude of the net force on the 5.0 nC.6uq( wu l glv46lao3a charge?

  Q1 = 6.0 nC is at (0.30)h5euk8dhzbx ; ppoyh ae6 93: m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0)d953 be :kahxep8uhhzp;o y )6. What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilapj4 sz77qa,vkuc5x (f teral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts ovu7cz 5x, f7 4ajqpsk(n any one of the charges?

  Consider point charges of +Q and +4Q, which arsgpr mldo6h7a e 3/(10hw3y s.prd+zye separated by 3.0 m. At what point, on a lm/ l7rsyphd3 da (wyr1 p+e.oh3g60szine between the two 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 tfcgc ogfht8+5 nsz-z (sy0c9cs+0-by o h9qj 0he origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the fqsoz- ysy 0-hoh(0 9tccc +g+b9zf 0sc5jn8g net force on it is zero?

  Charge +2q is placed at the origin ande2w2mumm u zg3cd, /gp-u-zw, charge -q is placed at x = 2a. Where can a third positive charge +q be placeddeu ,gpg23mu-z/mz,mw 2-cwu so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total oztk)yn7 m+evj m 8-gfsx8z+cum3 8x1h60rn cwf $4.0 \times 10^{12} \; electrons$ 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 85wl0lda6qye+ wwm;ne ar; xg a )v+v;the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the pr a+;g5yv+w0w lw ;qn;arld6 e8v)x meaoton?

  Two 0.20-g metal spheres are hung from a common point by 5y.b 4v i r*r8(iowfuk3ln 8qynonconducting threads whichu8rl* 5irkby vi fn(384yq. ow are 30 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. What is the magnitude of the k pbaw4m; q,f0by .yh0wu/ 1uwelectric field a0.0hfmu k1py uwbaqw4 /w;y,b t a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at g dug0v** evek,5,grp0 aux+ea distance of 1.50 m from a 50.0-nC chr+kvpu*d 0ev g0a5,g,xe *guearge?

  A 5.0-C charge is 10 m from a small test charge. What is /7.,yycidy,p wzx5g bthe magnitude of the ec,./ ,dyi5pybwgxz 7y lectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a sm4pk ;v0uwzby9all test charge. What is the direction of the electric fiel4 kbpwv9uz; 0yd?

  A 5.0-C charge is 10 m from a small test charge. Wd zfadxt 9uha,5w egw2v tl48g, x-0*ihat is the magnitude of the force expe8d2e0d,v t59gx *wah ai luw-f,zxtg 4rienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance of q i); -q fl(:smvl9f,hzkyb( h4.0 m. What is the electric fiel-mf)(qyi q hvlf,b;9s: zkh( ld at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick u:flu b( tuv6i:;j 2vsand a -4.0 mC charge is placevjftu(i u; 62 l:u:svbd at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is pla 2lveh ap,90gjced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At whag 9pveh j0a,2lt 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 = 0.20 m. ez;dx0;j h5kiae )n7 s What is the magnitude of the electric field j;s07ke) ;dihx zaen 5at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The z4n6*z vu8 )0cky bppkpyk/6dlast corner is occupied by a -3.0 mC charge. Find the electric f8kd0yv n bzzcup 6y6/)pkk4 p*ield at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the cornc o4ee8y id4y3ers of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1);y c4o3dyiee 84 +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 a uni ql7vx vq9d99jform electric field. What is the magnitude of this electric 9l 9x9qvvdq 7jfield?

  A particle with a charge of )xx6gkxje*)fzwzr/ , 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 inwz//d0ywlrsfgsg 7cb1,pxi 2;x 0 in1 an electric field of 6000 N/C pointing downward i ix2c;/s0p7 bw1xsg0/ dr,1fzn glyw. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass x7,,f hjmuio.j3 -xwd0.150 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. x xo.huwjj-f3m, 7,di What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carriee,mq g p-s6sg2s a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm f m6 ep-gsg2,qsrom the sphere's surface?

  A metal sphere of radius 2.0 cm ca meum(lw)h -8drries a charge of 3.0 mC. What is the electric field 6.0 -e(ud)l8hw m mcm from the center of the sphere?