State the law of conser7*dn 3lqefb :rvation of electric charge.

  Is it possible for two negative charges to attract eachqtr .yi tn6fae1q doo+6c877g other?

  Is it possible for a positive and a negative charge to attract each oth3ntte90ow -b )*k1o-sb efjbmer?

  A glass rod is rubbed with a5 suv9s(chhfo -,s,,.y 28tha urtsy*(fxy oo piece of silk. During the process the glass rod acquires a tyyoashu9h,(osf- 2o.5 yrs*( hx8fucv, ,tspositive charge and the silk

  A proton carries a

  The model of the atom shows icxzf5 u2-8dda

  A neutral atom always haip 39/bcy7rw 40,1qnzi sjxkas

  An atom has more electrons than protons. Tbhz 8zu9zb1s2w.(qw. :vra u 2p7 khjshe atom is

  Materials in which the electrons are bound very tighteddc 8)84oh / pdjuhv;sfwp+/ly to the nuclei are referr8ovjc ;s e)dphfdu +/h4/8dp wed to as

  Materials in which the electrons are bound very loosely to the nuclei and cayralju j j8j) upb7 atm2.(b08n move aboutt( pj .2bua0ajb)7 j mj88uylr freely within the material are referred to as

  A negatively charged rdk* . bj,pz+adod is brought near one end of an uncharged metal bar. The end of the metal bar farthest.p ,da+d*jkz b from the charged rod will be charged

  Sphere A carries a nem6fx xe,8/ 3uyb hl n6nm36 mt*ae8zwjt positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wirn6y*h3flm ajz6 8m t83x,6 mnuxbe e/we that is grounded. Which statement is correct?

  How can a negatively charged rod che-qwgu9fl 9:zarge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chargedj ihzzvu-+ tll3v998x glass rod. Txv u3li + hlt9zv89jz-he electroscope

  An originally neutral electroscope is g;ah/ pj.tx2eot9u r )prounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the ep e/ja px;t9o2)h .utrlectroscope

  A positive object touches a neutral electroscope, and tpa.9o 2/gd mqfn :oti:he leaves separate. Then a negative object is brought neaf iog/m2d:n.apto 9:qr the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is pla:r:ec)eqc8s- ic kwb+ced 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 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 eiicrs8bw k)c+eqe ::c -ther ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb cj*mjyuho)+7ku;l v w*ph c;.constant $k$, which appears in Coulomb's law?

  Two charged objects are separate/n.i6; beq/dlyp0 suqd by a distance d. The first charge is larger in magnitude n qdue q/l6s0;biy ./pthan the second charge.

  Sphere A carries a net charge and sphere B is neutral. They avg/preg1no ni t lp8 s+l,n2/,re placed near each other on an insulated sn,nl g 2l /epv8t/grn+,iop1table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If thekv.t* 9 v(tsc o d4d26bfy9dqh charges on both objects are doubled with no ch dqv .v t9kos(6fc*y2 4bthdd9ange in separation, the force between them

  Two charges are separated by a distance d and exert m )ae/d54q rijl+:hgz1/ myescutual attractive forces of F on each other. If the charges are separated by a distance of zc ih g5/+d):ay /lsje41ermqd/3, what are the new mutual forces?

  Two charged objects attract each other *snzs./ n fy(ewith a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the sepazen(f/ss* .ny ration distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are sep2;r tozo f+*fqarated by a distance of 1.0 m. What happens to the magnitude of the force on the fq* foo2t; +zrproton 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 happensg wnru) ce w2* :va90x7nc0s,x7xjnkv to the magn:s xg 7cnv2 9 x0)uc7rejwknvw,anx0*itude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separate (uglhc el8+z*e**jns d by a distance of 1.0 m. What happens to the size of ns(luj8 *+zhl*ecge *the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a s6/gwyknvwhk;gl h y zd9(:c83quare. 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 corners of the square. gg9hk y8kdw wlc /(;nz3h:6v yWhat 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. Whenkpke wbl1lzh :qk, 01/ 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,kpql1 b:kkzhe/l1w 0 of +Q placed at one of the other vertices?

  Which of the followi4 6aa jbs9i ek4yp7b.f2lnp,a ng is not a vector?

  At twice the distance fr9nu9k0p s4it1a z:t0lbv3iarom a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between ,yo 3b;qg ,+ y.ztjqdva negative and positive charge along the line joining the twd3 qty,z bo;vjq ,+g.yo charges?

  Is it possible to have a zer3;37zgq u qynzo electric field value between two positive charges along the line joining the two chargzuq7ygz33;qn es?

  Electric field lines neado5.06ff i ultr psitive point charges

  The electric field sh0- enq7blb i7yiadq;4ix +9etd5d8p yown

  Can electric field lines interse 7v v:r 4ccn:hk(wwos/ct in free space?

  A solid block of metal in elect2o5 rfjd55mm.e+ suii f.temy0:8zhm rostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electricjho0i. yru 5: emm5dmme.2 sf8i+zt f5 field in the block's interior.

  If a solid metal sphere andx i9in0-so,ey4w+ z3f 3u5)hb fbsa bk a hollow metal sphere of equal diameters are each gibo ,+a wii bufke n 4sh33-zbfys9x)05ven the same charge, 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 whnd-l( bv e),xmere a uniform electric field is directed straight upward. What can ben )ev (m-d,blx said concerning the charge on the block's top surface?

  If a conductor is in electrostatoyw zs()qg zoe54 h1pzhr:f ;0ic equilibrium near an electric charge

  A positive point charge is enclos(i4g )h,fy lpved in a hollow metallic sphere that is grounded. As compared to the case without the h) yhp (vi,4lfgollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static(1i z- woyxobas )r;m( equilibrium.

State Gauss's law.

  The charge carried by u gwp5zj mi- 7nnn5r(0one 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 manyd75- r /crvtc6lhoqa72k 6fzw more protons than electrons does this piece of plastic hrwc 67hlrk5vq-7z /adt 62focave?

  What is the charge on 1 kg of j ee3fwj,ym8tv-- .ym protons?

  An atomic nucleus has a ctkp/*yna/p -/ji i8um harge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatpcl bdl( 6 re3).bo7mhed by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force)p3 oe6 (dlmch 7rb.lb between them?

  A 1.0-C charge is 15 m from a second charge, and the force between :9mg6s)yb/oe2 qy6aiv exc:mthem is 1.0 N. What is them9c6/xy 6so gev)::qbiay m e2 magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they4r j j/oxafa-u6e xk6*?

  The force between a m w4wfipn7uyis0,1 b-$30 \; mC$ 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. ) isyxy62wso( If they are moved to a new separation of 8.0 cm, what i6y)w i(yx 2ssos the electric force between them?

  Three identical point charges o7,m 6oc:odh yt owp,h7f 2.0 mC are placed on the x-axis. The first charge is at the origin, :6w,oo,m cdo7pth7hy 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 the x-axis. A charge of +2.0 mC is p:wh+):oxq stgmcj -,x *iz a.claced 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 e-go, *:t+ izc.j):c xqshawm xlectrostatic force which acts on the charge at the origin?

  Three point charges are locatew0(sm y5mvsh) d 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 )yv5 0wmhm s(s= -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 squ( 9mq6 ksdsbn8w9is *hare, 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 t96 *ndsi9wbshs( q8mkhe lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 w34vz ;.;+y mczo ywbvcx-ytmbs 526onC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whatv5.s;6ww -z2yboyt3c+ 4x vzyb cm;om 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 1g h3k ol/3fqf v3+nkoat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC n qfgkf+3k 3oo1vl3/ hcharge?

  Three identical charges of 3n8 f2v p,*wlij.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?,8p2jwifn*lv

  Consider point charges of +Q and +4Q, which are separated by 907-qzm 1ddmyoj ikt,3.0 m. At what point, on a line between the two chaozi0-qj d 7km t9yd1,mrges, 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. Whx qolkn-3p4t nu :0,ddere on the x-axis can a third charge be place:nq0ldx pndk, - t3o4ud so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whe8h p1d*f:mqzwsc3 2e ere can a third positive charge +q be placed so that the :*f8h1 3ewdz 2qcmsep force on it is zero?

  A copper penny has a mass of 3.0 g. A t k (+pzs.c-lqgotal 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 -ajwumev4- *dg40lit-e/ lz va fixed proton some distance above it. How far above the electron is the pr mde4v -tilu*zl0 w-ga4-/e jvoton?

  Two 0.20-g metal sphe qu0,o*r:yt8a:h n ma;tmg kfr*t8,rrres are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forcemt og,8r uf hr*: t,trqkamy*r0n:a;8s them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a ch -bfcqu f5k0u8ekeq (1yzr/*i e;o9hwarge of +40e. What is the magnitude of the electric field at a dista;*/q 5 e1oir(yufw z9hf kq 80cku-ebence of 1.0 m from the nucleus?

  What are the magnitude and direction of ts7rv.gd wq w+3he electric field at a distance of 1.50 m from a 50.0-nCq gv+dr3. w7sw charge?

  A 5.0-C charge is 10 m from a smuiakm9 k66xxr7jws,- all test charge. What is the magnitude of the electric field at the location of the airs xk9 6mx,kjuw-76test charge?

  A 5.0-C charge is 10 m from a small-kk 58kqob5q+ 1hyr+gutm m/ d test charge. What is the direction of the electriy1d okt/g - q5kmmbkqru8+h+5c field?

  A 5.0-C charge is 10 m from a small test cr+ok ys76w s2jharge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test ch7yorj2swks 6+arge?

  Two point charges each have a value of 3.0 C and are separated 4ce 2 z6s,mts64+l gfhyn wsq3by a distance of 4.0 m. What is the electric fi4n fzythgss me3s+l q24,w6 6celd at a point midway between the two charges?

  A 5.0-mC charge is placed at tzkxh3*glu6wo.-9of1 v ,d bg she 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 5g w.d*9ks-3obolgzu 1h vf,6x0 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark o, 30pqmqo p f0knb*mh:f a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two chafo30mn,mppqb: h0*qk rges is the electric field zero?

  Two point charges of +3 -gf qsm,.9atsfg9mf *.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What*f9gstgqfa- .mm fs,9 is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squo8,0gvp 7zcaju0 tlh3 are of side 0.50 m. The last corner is occupied by a -3j0l7gtc 0o3,a zhup8 v.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 10*pi ,4:j fpv*hgaomk.0 m on a side. Charges 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). What is the magnitude of the electric fieldmfp0*akih *: ,jovp 4g at the square's center?

  A force of 10 N acts on a charg 8pwgx50mvqgx-i6tz 0 e of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fv x 0gxqwtp5z-0mgi68ield?

  A particle with a charge of 4.0pihh*0 (uh; bm 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 q:cf,y :o helakp,2j2in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspenola,f: cpy, qk2:hje2ded?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Thepgo ae*9bwaop/s-)+ b ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electri bao/-9weg+ p*ob asp)c field?

  A metal sphere of radius 10 joc)i*x7ywu5ax+7 crcm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surface? ra5 c7yjix7c*)w xo+u

  A metal sphere of radius 2.0 cm carries a charge nh4innv;;dqrrs0q g1zo.g 5: of 3.0 mC. What is the electric field 6.0 cm froinqr:qrn vn4;zg o0gs.h d;15m the center of the sphere?