State the law of conservation of electric charge.r sx8v0jl-f: v

  Is it possible for tc3p +,n zjv 6lo/rq*wl: z0icyvq8 (qzwo negative charges to attract each other?

  Is it possible for a positive and a negative+6usy hk;boxew3y;x/ charge to attract each other?

  A glass rod is rubbed(j-9 lejrnw+ d with a piece of silk. During the process the glass rod acquires a positive charge a+( wd-9r jnljend the silk

  A proton carries a

  The model of the atosxl0no5t +lz n0)d2mqm shows a

  A neutral atom always hasu bm ws314e,ci:rc p-w

  An atom has more electronf, /bo9i/ rgj);nqkt 9zm xu6us than protons. The atom is

  Materials in which the electrons are bowui:zs4bd,v2ms/ 3.zabe 1 amund very tightly to the nuclei are referrebs3mu 4ase2.z, 1i/vwmadb:zd to as

  Materials in which the electrons are bound very loosely to the nu .hr:,*nc lwfaclei and can move about freely within tanl*h.w, fr: che material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar.6mx f)bh:dky 6 The end o k:mb)xdy f6h6f the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutvs-l+s dn-gbktc b1 /4ral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire thablk- s+4-g 1tbcd/nsvt is grounded. Which statement is correct?

  How can a negatively charged rod charge an elezuq vhjgmn t g7md*35s1:a*, qctroscope positively?

  An originally neutral electroscope is briefly touched witfg2u+audae2/ 5t .tvh h a positively charged gladf2ea tu+v. ugt 2ah/5ss rod. The electroscope

  An originally neutral electroscope is gr bu7vjj7k )l)rounded briefly while a positively charged glass rod is held near rj)v7ju)7lkb it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscopwwzo xt : 5-kqfud2:n/e, and the leaves separate. Then a negative object is brought near the electroscope, but does:x :utdk5 o q2/fn-wzw not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tabp4e:,tj,bttf s4n-ma le. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls al,tf:m-4es ,a4tnt j bpong 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 final charge on each ball?

  Charge is

  What are the units of the Coulomb c7) flt050mnzhb h:6g eftn dn0onstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thuww2 ptb1)o6 ze first charge is larger in magnitude tto1pbw z6u w)2han the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed ne6l da5 qw,gadrpp m-93ar each other on an insulated table. Which statement best descri6aq , -l5md9rgdpw3pa bes the electrostatic force between them?

  Two charged objects attbltdzcgb4 ,zg+q(3(13 /roa fnea qx/ract each other with a certain force. If the charges on both objects are doubled wito 1q3b /rc/g n(f3at4x+bd ,(e zaqglzh no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive f 4jb e6:rviu/jorces of F on each other. If the charges are sepvei:ur64jj / barated by a distance of d/3, what are the new mutual forces?

  Two charged objects attracug,a d z pkh*y2)j6j4ht each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their cented z*g,h)4 j6 hkyupa2jrs is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separa405hx0cspu8+fg(ke7r em x ubted by a distance of 1.0 m. What happens to the magnitude of the force on the pr8 xs7xu+ce(0h5krem 0gubf4p oton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a dicl ptpb/nrrbcg4366,)o 4 cs tstance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the protontc bc ts3 p4 6,/lp4cr6onrbg)?

  An electron and a proton are separated by a distance of 1.0 m. What happens to +t1n 3xllhzrs-1w mn2 :e.gdol9feo.the size of the force on the proton if the electre .1 lewo2gt.h+ 9os3 x-dzfnl1 m:lnron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at t7xgx pwzs: y84he 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 electrost xp:47 x8wysgzatic 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 thnl lxkf2 4 5ly6jl21 be7s2gwje centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic fyxj4g s5j el 26l22llnfkwb71orce 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 ish t.om-n g,m0rfxtl ocm v pe.z).719v not a vector?

  At twice the distance from a point char//x.ca;qytl pxax yy; cf-,h-ge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and poutv3l 2d-sn)9zoqz w /5rq+k8a 2lnx ksitive charge ao)/q r8ld3 2lz2x zukwnvtkns+-a q59long the line joining the two charges?

  Is it possible to have a zero electric fieldltzs9l-6r 4 md value between two positive charges -4ztd ls6ml 9ralong the line joining the two charges?

  Electric field lines near psitive poi,)o zagyw2*5q2p rqasnt charges

  The electric field shob) l58t dcbc)awn

  Can electric field lines intersect in free spac un4pez92wqc n8wdp03 e?

  A solid block of metal in electrostatic equilibrium is placed in twao u: :0obc2a uniform electric fiu 2:oabto:c0w eld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollowxq 6js 479z/c*wa -njl czo6lx metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surfs7axwl/oz * n6jjz-46 cc 9lqxace is

  A cubic block of aluminum rests on a wooden table . c-sun8 sgn3+yg3xk m,)ez;zeo+iu g in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on sxg+-me+nzszo,e;k i u833. ggc y)nuthe block's top surface?

  If a conductor is in electrostatic equwtq7g,/:lh+,y jc6hxfc pow* ilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere th; b jrqv;c-7ktat is grounded. As compared to the case without th b;rkj7ctq-v;e hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conduceao n9rgd2 wb*zo ra9ln8 *n73tors in static equilibrium.

State Gauss's law.

  The charge carried by4u sl cqno:j6- one 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 nel 89a:(qhtm .ckj5gbrh6 c 3zrho94zot charge of +2.00 mC. How many more protons than elerc: j 8hcoa3.hl9zzo4hgt (9rqmkb5 6ctrons does this piece of plastic have?

  What is the charge on ;+nus dnqo )r+1 kg of protons?

  An atomic nucleus has a chzg vn0krfq ml5k-8 amj,k,8:barge 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 2tf ): +dvego9vrxfj+a: c7mq5.0 and -4.0 mC, respectively. What is the magnitude of th: fae)otvg q 9jvx+rf57mcd+:e electric force between them?

  A 1.0-C charge is 15 m from a second charpx52aae: yqqt /0v i4frj9f2 dge, and the force between them is 1.0 N. What is the magnitude of the second charg vx: /dt ir0fpf9q5a y2jqe2a4e?

  Two 1.0-C charges have a force between them of 1.0 N. *egod99 sdeklyiv (zz 7* q+b9How far apart are they?

  The force between a lgdzh)hs9 3r:c7xrc 3 lslii0z)n:lbq)(q t: $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, inis,k9cta4/awrfn t ,j;tially 2.0 cm apart, experience a 1.0-N force. If they are mf9 j,wrc/n a;ktts ,4aoved to 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. The firs52 ejvj( tr+l6 pa+hb i8n2qi94n;ip gx*qirpt charge is at(prb g *8i4iihxrpeni t +652q9a+v;nq2jjl p 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 are6hqm0hl udljd9 6m.hthz; h,7 placed 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 100 cm mark. What are the magnitude and direction of the electrh6q.z u jm6mhd, l7hh0h9;tldostatic force which acts on the charge at the origin?

  Three point charges are located at th u+hq(i d dte3b3-b 2k;)+tr wbkh)m pfsv2:bge 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 on the 3.00-mC charf+mkkhdt;v+qw-hg23 )t)u 2resi (b:b3 pdb bge?

  A point charge of +Q is placed at the center of a square, and v.ri39jxd v w/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 thx3v /j dr9v.iwe magnitude of the force that acts on 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 = 5.0 ntf q54ls71g ccC is at (0, 0). What is the magnitude of the net force onf74 sgl 1tcc5q 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)gbk 6))jt f3z1snp r5c; Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0gj5z3f1) ptr6ck n sb) nC charge?

  Three identical charges o +1vejd df+/at,4qqdw q3tl 6yf 3.0 mC are placed at the vertices of an equilateral triangle which measure1+,vdt t6ef +yaq/wql 4q dd3js 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 ugtw,6vbko kc mvg :d6:* 5g4em. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electbg :v6*o4edg 5 :g,vkum 6ktcwrostatic force acting on it would be zero?

  A +3.0-C charge is at the orig *2oju musgd-,in and a +9.0-C charge is at x = 4.0 m. Where on the d,ogm-s2 *uj ux-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and char4sm6*yv pg:,o1pd+i jl xepn8 ge -q is placed at x = 2a. Where can a third positive charge +q be placm4, p s8i6gld1o:jv y*p+e xpned so that the force on it is zero?

  A copper penny has a mayg i)qy(ah1n9y t6p7 ass 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 attraction of a fixhxx9 -s0)hkzu ed proto9 xkz0hsuxh-)n some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commrz2,4n ,vsx scon point by nonconducting threads which are 30 cm long. Both are given identis, 2cvzr,x ns4cal 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 +4sscz+5bvzd6kw m )e4a.f5 6as 0e. What is the magnitude of the electric fies zkfm5w6bz6 s 5.e cva+ds4a)ld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a di, pkcz:9aj(pbsj.3(wa wo s c/ yui902vxhzo:stance of 1.50 m from a 50.0-nC chargk,s09zo3/zs9 cuwb . ::(va ipyjh apo(2xcwj e?

  A 5.0-C charge is 10 ;xqotpq1zozwyh: j37)-60 nioahn s:m from a small test charge. What is the magnitude of the electric field at the location of the tesaozn -nxh7:j h03oqiwpo :s6)q;ty z1t charge?

  A 5.0-C charge is 10 m gbk s2i0j8*q+gz4oj xfrom a small test charge. What is the direction of the electrizq8b x+2gij4osg0*kj c field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of(s- g d88ynmbf the force experienced by a 1.0 nC charge placed at the loc dm s(gb8fy-8nation of the test charge?

  Two point charges each have a value oj7q-3l:xe ,5mc l) 4i+(hhwk*n okpz 4ps wcsuf 3.0 C and are separated by a distance of 4.0 m. What is the electrice mw3:phszojkcil7s (,x * wpuk4+q4l-h5) nc field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 ;7j0l x*loi9; vzmzwpcm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mar70pi*9omz jvwl zx;;lk?

  A 5.0-mC charge is placed at the 0 cm mark of a 6 b2 cixdb-oifjz+e36meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges i b -63 odj6zixceb2fi+s the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC *l chkz:jc4 6fare placed at x = 0 and x = 0.20 m. What is *:k4cjl ch6zf the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 zoq mex/*h;n 5o :- y(xpvq7ram. The last corner is occupied by a -3.0 mC charge. Find the electr * v 5paxzo;rhmqo(e7-yx:q/nic field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges arlka-a,9,e w hbe 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 magnitudeekl,a-,a9h wb of the electric field at the square's center?

  A force of 10 N acts on a chab(po-r* lfr4jt7 ;dlmrge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of th -bf4dpl7l *( rm;jrtois electric field?

  A particle with a charge of 4.0 mC has a masj2.3 womfg)+oc39+-l q d8fjq lpo spzs 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/C 3k h31h 4/vldaavjm5vhgy 8f-pointim4dgvv jhky3v a5 8fha-l3 /1hng downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries 2t-vmcsgmc :,) r*aih a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the elesm ,r :g*mh)tv2aic-cctric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 +q 6t2v)m31 varh)/y gc( yleds cd2czmC. What is the magnitude of t2)r+tgzecvca(m ql 3h/s)d1y6y dvc2 he electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carrie+bzu : gwcaq */sc32uov6jx0 js a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the :+u32ujzg bqj /woacs0 cv*x6 sphere?