State the law of conservat 4mkga)qy/s3qq:bzv 7*a xl+nion of electric charge.

  Is it possible for two negative charges to attract each. of:5kqk2npt x8i5ab other?

  Is it possible for a d +tjz;tf,rtwt 6w /z3)1y ngzpositive and a negative charge to attract each other?

  A glass rod is rubbed with a pek,/ckxx+0v rngw07gvg,pc v jw8 e7 -iece of silk. During the process the glass rod acqxke-78wvp kr0jneg g cv/w,,xg+c70vuires a positive charge and the silk

  A proton carries a

  The model of the atom si,- rlf uateea--s ii9w/2*xu hows a

  A neutral atom always ha t;vg9s.r6t m-kneza,.qki* bs

  An atom has more electrons than protons. ,n3 drp4gy5c cThe atom is

  Materials in which the electrons are bound very tightly to b/a d/l(vx9znk2oyx683wpx db n-kl f8 r*gc 0the nuclei are referred to asyx8 gf39/k*-lz2wn/vd x bd8rxc p 6alob 0(kn

  Materials in which t(beo3ow(v- ufhe electrons are bound very loosely to the nuclei and can move about freely within the material are ref(eu (obv-o 3wferred to as

  A negatively charged rod is brought near one end of an uncharged metal) a pewsq,expmvh58.: bar. The end of the metal bar farthest from the c5px:s,pe qe)mah 8vw.harged rod will be charged

  Sphere A carries a net positive charge, and sphere z r x;3nt.;qbvB is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which staterzn b;;x 3t.vqment is correct?

  How can a negatively charged rod charge an electroscope posi7c8x81 yu-wp* z)jliqal2h d ytively?

  An originally neutral electroscope is brieflosil+xdu0u2/b2cy6e i 3yoj7 y touched with a positively charged gl d/j6y0iu2cey7u lb2 x3oo +isass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a m8y z4ewm.jye;38k au positively charged glass rod is held near it. After the yjmayw; e.e48km8z3u glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate.(gmf0jv. b 7ms Then a negative object is brougv m07 gmb.(jfsht near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively chargnyt0h2u,*o*l/ cnhy wt3j;wk 1zwkb3 ed object is placed on 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 fo**k,1ujw30; zb /lk chnh 3twny2oytwllowed 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 Coulomb constq6bnp1bt )aqwh9)bub 6 bv 2a*+q7 mflant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is ly7 3yz t2+wso,kwl v.*tvz7zjarger in magnitude tztz7 +*zy2jt.3soy7 wlvk , wvhan the second charge.

  Sphere A carries a net charge and sphere B is neutral. They xqex 1p2im2bche *+/care placed near each other on an insulated table. Which statement best xq/ cc2i+x 1e2e *mpbhdescribes the electrostatic force between them?

  Two charged objects attract each other with a cert k 047sy9.vvye se9p xr1se7xtain force. If the charges on both objects are doubled with no change in sep7y4x ts.ee0 7 9se9spxvyv1kraration, the force between them

  Two charges are sepag )wgp xg2) :*. n:eshfwk3fqwrated by a distance d and exert mutual attractive forces of F on each other. If thf)ghe:qw * fw)wnpg.gs k:23x e 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. h. f 9gcng6 ecfks./h( What happens to the force between them if one charge is doubled, tn.6hse 9khf( cg f/.cghe 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. What happens ,acezt h * 14w0ek5ou l sy:vm0plmx57to the magnitx5eeu,po 4 5zahwv1* cm m0ll7ts:0ykude of 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 1.0l x4x/ nnr*;fe m. What happens to the magnitude of the force on the firs/e*4fn;lrx nxt electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a d//;l oq(e cbzhistance of 1.0 m. What happens to th hz/ b;oelc/(qe size of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed a uulju f.9u8oklq(i4y( vd0,zt the center of a square. When a second point charge of -Q is placed a 9q8 4, 0k(lilyuu( ud.fvjozut 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 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. Whj,1up.i pzri:jdewnk: 2p;k 4en 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 othe 4:j,z diewn:p;.iukkr 12jppr vertices?

  Which of the following is ;a;)0txzzmr x not a vector?

  At twice the distance from l2 4cy6/hhe.imi ;qbwa point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negtve;0 dv 4 c/h lmyitw50qfp08ative and positive charge along the line joining thtv/;d p8fw el0 0qcmi0t4yv 5he two charges?

  Is it possible to hav t.qdhv nhe628 cu9gl8e a zero electric field value between two positive charges c.dhnqe 8 9u2ghtvl86 along the line joining the two charges?

  Electric field lines near psitive point chargssgq59 h(glz8 o+.zswp28ij les

  The electric field shown if)a-d. q5ntqd -j nv7ph st:j4)m*nf

  Can electric field lines intersect in free space?f7( i.3e/yaebie0 fd d

  A solid block of metal in electrostatic equilibrium is placed in a uniform elen;mnoh./ brn: ctric field. Give a stathn nbm/:o;.nrement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow mzb2i8 e 4xf)(pixd.mt etal sphere of equal diameters are each given the same c)xd2fmz i.b8 eptx4i(harge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woodeny.ubws;npmput(j u/1*r9 cg . table in a region where a uniform electric field is directed straight upward. What can be said concrcw;(p/.gsu. ut y9mj up1 n*berning the charge on the block's top surface?

  If a conductor is in exj)go lx uf272y4 c;n hvm9f0vlectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere (8nf rrsa7 )ayc0iy+y- y(egothat is grounded. As compared to the case without the hollow sphere, the elecgafenyyo y 7+8s(-iar (rcy)0 tric field at a point directly above the hollow sphere has

State three properties of conducvg * 05h6n;r a;wg1 oydh4hxfvtors in static equilibrium.

State Gauss's law.

  The charge carried by ozhka*ba))zw0- q4+iffxvv 3p pn/f z-ne 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 protons twho3, z g6bbng57p,knhan electrons does this pi6 wbb oh5g,g p,znkn37ece of plastic have?

  What is the charge on 1 kg of protons?na.4 xblag66f

  An atomic nucleus has +.el x(fpvzw*8rh 7kc e nd7o1dxq3t0 a charge 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 of 2.0+zpsmhvy+ 2v- and -4.0 mC, respectively. What is the magnitude of the electric fvsv +2h+z-mpy orce between them?

  A 1.0-C charge is 15 m from a second chawgz1)w ( ryi5eb*s(i62 r(qr lm5 cjnbrge, and the force between them is 1.0 N. What is the magnitude of the seco c(rw5j*)wbir6yql1s( 5bigrn m( 2z end charge?

  Two 1.0-C charges have a force betweeblex6(+-lr 3c mhoemf yxa ;:12f,igj( nzrw+ n them of 1.0 N. How far apart are they?

  The force between a :1oro1w wft dnq m30z2$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart-u3r8nr)5qlomit h )j, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force bj)r u3 hmloqt8rni5 -)etween them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first in .waxtj0xa ( **z ,;5cinxbmcharge 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 onxz,itc(* n*axj b xm5;a0 iw.rigin?

  Three point charges are placed oks42 54u b(mts 0oxmgsa 7g;kfn 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 7s ( b04t sfx5u;m2kmgs og4ak+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 = v km3b2kn+r(l1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the forc r3vkm2lkn+b (e on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second p,ti0pr/j5c :( x ozodgoint 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 ati(d t,jop5/0cg xo:r z the lower-left corner?

  Q1 = 6.0 nC is at (0.30 2u :0a1uk3 vxqcw,sg xm, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chargs ,xv 0cquauw k3x21:ge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q7 a )r/ qh4brgi9fez,i/jr3jw3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0g9j/ira/h3e,r b qz )7jfwri4 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral f0w5/gn.g nivub;yt * triangle which measures 30 cm on a side. What is the magnitude of the electrostaticv.*ut/ggiy0 ;nfnb5w force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At 7ffbf 4-*tsvljga x r(pg )-2giqep; 3.uxy v8what 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 z uga2yiqprgf( .;)-s*-j3f4 vefvblp 8gxt7xero?

  A +3.0-C charge is at the origi1 f1j/lj:dszq l /guo-n and a +9.0-C charge is at x = 4.0 m. Where on the x-axijg qj 1u1l ldf:-//szos can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the orehx( wuj+o ycl**7;o pad7jk0 igin and charge -q is placed at x = 2a. Where can a t hpdjoy(e7j *; uxoalw+*0ck7hird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A to v*ka ,pp*lr+ktal 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 of a fixef98dpbqe*0 vld prpd bl q*89fv0eoton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point:etq1 k gm-tkp/x2zp (sqj.-e by nonconducting threads which are 30 cm long. Both are given identical charges, and 1(qztkjt. pqm -p-/xs: 2ege kthe 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 electrice.p7y i4 wttza87r5bl6d.c r n field at a distance of 1 yprez 5dw6l4 irbn77t tac.8..0 m from the nucleus?

  What are the magnitude and direction of tknq 5/d kadgu 03grgs sjo8eb48p0-e3he electric field at a distance of 1.50 m from a 50.0-nCgg-oku8038s g qare/e kpd3bs 45jd 0n charge?

  A 5.0-C charge is 10 m from a small test cha-flxn k6jk s;8rge. What is the magnitude of the electric field at the locfsln-j x ;k68kation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of thzgnfjd .ovn vr8qx6+, h5.ny4 e electric fg ny54,dhofz6.v q 8.vrj xnn+ield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of o futx hfqv(:kw)5(m/the force experienced by a 1.0 nC charge placed at the locationuf (:vohf)t 5 qxwm(k/ of the test charge?

  Two point charges each have a valqjj / .p4dl:lwue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a p.:q wd4/lj jlpoint midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of *33* weg, 3r fdz,dzvyrzbka g ysz7)0k e8c3va meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the elect*ksfzr z33 kv*zcr,3,e w0d7g bv y38da)eygzric field at the 30 cm mark?

  A 5.0-mC charge is place2 1ef 2dvon9 w:dbwt2flfib6 0d at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm marw0 f29dw2 d:tfb61efnoil2b vk. 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 = 0xh*u.h+xo d 2tv 1 v8*3vynpnwrx6pf+ .20 m. What is the magnitude of the electric field at the point midwptnd.2*u 61n+h wxvo pr83hfx vy+* xvay between them?

  Three 3.0 mC chargesrj*dc v.,horb u 917/rb; eaum are at the three corners of a square of side 0.50 m. The last corner is occupied by aa7 m.1 b *jbv rc,;dhrruueo9/ -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 arpm cxzb*3u 2/oe placed at the corners of the square as follows: +4.0 mC at (0,u xzb/* cm3po2 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 a uniform elec+,gla 4f6z;a )zi chcutric field6z ,f)ch a+cauiz4 lg;. What is the magnitude of this electric field?

  A particle with a charge ofem0is3q/o *ta 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 an electric field of 6000 N/npt2kie t(8 *pbp31vzC pointing downward. What charge must be placed on the ball for it to be ipp p8tke3 *(21b tvnzsuspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ballk/dr8rfk/ c t ap5vlv: 7vh.1o is placed inside a uniform electric field, and is suspended against the force of gravity. Whatv/kh8lcp51v/ka.v :dot r fr7 are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is gzsl ype4o(1gvtk 5+: +u /myzvhig40the magnitude of the electric field 5.0 cm fv4pygi+s0gk/ l( yvuhz 1g :4tom+ze5rom the sphere's surface?

  A metal sphere of radius 2.0 cm ca6 lf0,ou js2xprries a charge of 3.0 mC. What is the electric field 6.0 cm from txp jlof0us2,6 he center of the sphere?