State the law of conservattqt yplfkowf0 ) xat*09 mfp9;;6o4 nmlc2.pe ion of electric charge.

  Is it possible for two negative charges to attract each otv 6lwh,;d(;vds tj hov5t7n+iher?

  Is it possible for a positive and a negative charge to w2km ,rthd h.7gd8xo 0attract each other?

  A glass rod is rubbed with a p:o28n; -ac2 lrf c;ti/ya+kx/ alu pegiece of silk. During the process the glass rod acqui2 :fx2ya t+ - /gpk/enl;caolci;aru8 res a positive charge and the silk

  A proton carries a

  The model of the atom shows .k3:amdg6pqt-z8 t kh(e9 e fda

  A neutral atom always hcgmd/c+g b( s*as

  An atom has more electrons than protons. k +,rel f2 e+c f izi2tqnnyso,q;,+6mThe atom is

  Materials in which the electrons are bound very tightly to the nuclei are referfjf po 3*/5rrc5 ;wlsh-gnel4red tlhfj5p s 5c4 r-lo;nf *eg3wr/o as

  Materials in which the electrons are bound very loosely to the nucl1 ia05gdjv o)zei and can move about freely within the material aro5ig0z)ja 1 dve referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. c.q lxb j)xs*em4vd 9i1 4i,mrThe end of the metal bar farthest from the charged rod will be chic9jse*v4 xmr.iq), bl 4m1x darged

  Sphere A carries a net positive charge, and sphere B is neutral. cu5ddfl9 h erq *r+u.:They are placed near each other on an insulated table. Sphere B is briefly touched witudq9.fd hu+ rl:cr5e*h a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positively 7s*lnfcank,v+(fx ,a?

  An originally neutral electroscope is btw5ez9(gesr;b/p -psq m i4+friefly touched with a positively charged glass rodp/(p;g-z5imrbf9 s4wes + e tq. The electroscope

  An originally neutral electroscope is grounded brg4+-e(5znl 0jkc vjozk)7s ffiefly while a positively charged glass rod is held near it. After the glass rod isk)4(c z lzs nfo0 g-j5e+jk7fv removed, the electroscope

  A positive object touches a neutral ly wmq:*,/ij5h ,cen;olc e9j electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happ w5i l,q j,no*e:9e/j cylcmh;ens to the leaves?

  A large negatively charged object is placed on an insult0g9 uh5pezuxw;ey6 :ated table. A neutral metallic ball tpw9uxe0gu5y;6 h:ez 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 final charge on each ball?

  Charge is

  What are the units of the Cou2p .n/ric0bov9 *tnrplomb constant $k$, which appears in Coulomb's law?

  Two charged objects are sepaj;)nq9z .dlkd1dbpsw * s+a n7rated by a distance d. The first charge is larger in magnitude than the*. z;p+dd7jn)ks9 nq b1dws al second charge.

  Sphere A carries a net charge and su -j83wun( jlzphere B is neutral. They are placed near each other on an insu8 uwnzjlj(3- ulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the cn++l;.* p (esglp1iq q c 6pchh/ewx8eharges on both objects are doubled with no change in separation, the wlpel; /+ce8ghh p qsep x+ni6q.1*c(force between them

  Two charges are separated by a distance d and exert k 2 u/* b1a(onck9l(l; ))fjsry w y*szr(vdxlmutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual fo1x ;)(dy*( vl o 2b/ a9llz*kcfjn) (rksrsywurces?

  Two charged objects attract each other with a force F. What happens toq c.bgorgfhsg 61gls:pp8gtxg 9d7 , ; di93c0 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 oris rg;ggct391xp9 0l6 gdqih dfsp7,8bg.gco:ginal value? The force is now equal to

  An electron and a proton are separate *c bwd/u d:f2rvvp8p)d by a distance of 1.0 m. What happens to the magnitude of the force on tpv8bf* d/w2ur ) dp:vche proton if a second electron is placed next to the first electron?

  An electron and a proton are s4t+fhmt; ff-zzvc8b ) eparated by a distance of 1.0 m. What happens to the magnitude of the force on t8)z 4+mfht;cffv- z bthe first electron if a second electron is placed next to the proton?

  An electron and a protov4.7v. x2ws rcgzq+6rnbtbe8n are separated by a distance of 1.0 m. What happens to the size of the force on the proton if8q.4.vt+bws gxr vner6 z2b7c the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of ;ws3pj ,hh(w q kc34jpo*xg2(m eip7qa 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;(q( popgsi *h,jm whj2 kxwq73p3c4e 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. Wge87 tg+bla 5ohen a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0g el+87 t5goba 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 is not a vector?u 23yx b/wv6zn

  At twice the distance frokvzs1pd 9 t63/-xtwl im a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and 4 g7vi8w:kib 4puj xk.positive charge alo8 bikpw7kjxu.g4i4:vng the line joining the two charges?

  Is it possible to have a zer(c:r4q:zu+onl g ly1uo electric field value between two positive charges along the line joining t :rnucq l go:l+z(1u4yhe two charges?

  Electric field lines near psitive point chl,d alvn:h3s o:+ox: karges

  The electric field shownb3f7 rv63v)ioomab 9 eb wn(1yg cr./k

  Can electric field lines intersect in fre,*ylzq5b2 uxcrc6x*r e space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform x69s gy i8.gm ai1vol/electric fmax9.g/vg6s 8iiyo l 1ield. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal i(uaaq)k4 mn aobw3;8diameters are each given the same charge, the electric field (E) midway between the center and t; ow38a(iq k4aaumn)bhe surface is

  A cubic block of aluminui 2q io ztr3pr4 zyd9i,z+br,9m rests on a wooden table in a region where a uniform electric field is directed sidq3rz2rozib ipz , 9+y94r t,traight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an rdu-d o-(itb* (wkv9oc, 6ibwelectric charge

  A positive point charvm1 -6udu0h t8iys, ebd0x ;xmp)m ly:ge is enclosed in a hollow metallic sphere that is grounded. As compared to the case withomsyl:ix p dx1;ud0 t6 y0v,hb)u em-8mut the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conduxwl02nvzitm2o 54 9iwb.e n9 lctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron rz)q * u2ss( rk2r/,jp vtnkr3is $e = -1.6 \times 10^{-19} \; C$. 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 protons2x- tr+ lmaowd3+mj d1 than electrons does this piece of plastic h1x++ rdt- m2omwld3ajave?

  What is the charge on 1 kg o6p; y ghx/ck;c1da7br* fy3zbf protons?

  An atomic nucleus has8 ka xr7a*eb x g45s/(dyxji24ddv,bz 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, uf:sp -a/ uvoqe/,3mob rgw1kq /4ey9have charge values of 2.0 and -4.0 mC, reser4a9 qqp, v -fowmusko/geu3 y//: b1pectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 ,onvvw,pqf 5(N. What is the magnitude of the snvvo 5(p,,qfwecond charge?

  Two 1.0-C charges have a force be5zd+ driv( k,u 4 -c(xbn 1(4iljwcgyxtween them of 1.0 N. How far apart are they?

  The force between a mmz0eh** seg+$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 1v,rn nym(e+nm 5upj 8cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betw5j pvy+e ru m81nm,(nneen them?

  Three identical point charges of 2.0 mC are pl.64s3kpc w bwlaced on the x-axis. The first charge is at the originsp.6wk cw34bl, 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 placed at 1h+ ob7v/il8wp vcd p6the 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 which acts on the charge at the ori7vw/v8dl + i1bhc6pp ogin?

  Three point charges are located at the follow(aka iqxmi 7*.a is t5n16c;hjing 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 magnit6c*jn5t.s k7q (a;x1ihaai miude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the c5slezepc*2qc* ip10o enter of a square, 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 thl2*c0se z5epiq*p1o c e 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 ny tsx))agp 1,eC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on tgs1x a )pye,t)he 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 = 5.3a s7 jn g9ey ml,n,pyy4du6d*0 nC is at (0, 0). What is the direction of th6y7,y9a,jgyuds*nmn 4p dl3 e e net force on the 5.0 nC charge?

  Three identical charges of k rsh d.)pj81j:ce +nm:morb) 3.0 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 whj8.)chpe r omnj k+m)sr:d1b:ich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At wh,lw py3x9vx*uma-* by2 zd g,dat point, on a line yv-b x,ap9z yxuldg*m3*wd,2 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 the origin and a +9.0-C chargeawfs*hs 60r3 d is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zerosawdf 30*rh 6s?

  Charge +2q is placed at the origin and charge -q is 7ddy.w84y ohg7tz w)oplaced at x = 2a. Where can a third positive charge +q be w7w td 7.ohyy8g4 )zdoplaced so that the force on it is zero?

  A copper penny has a mass of 3rc.- + kwsrrj22 xz7kx.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 *f+f::x :ogf)i d iqvgthe attraction of a fixed protof+gqodvg i):fxi* : f:n some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by f89xq6tqoiuc:/8 lss nonconducting threads which are 30 cm long. Both are given identical ch9/qsqx6 lcfos8tu 8: iarges, 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 m vzy xfl7/nyh/s,l:v2. ne)gpagnitude of the electric field at axn/hf7yg/ es2yvv:lp . )n,zl distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the elec*w2s z+zi 33 novo5 czs(;sdujtric field at a distance of 1.50 m from a 50.0-nC chzu ij3(swoo+v2snsdz;3* cz5arge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the e/7nl 5w 08x*zbfoz)akr o*dzkta j)3jlectric field a5f)x3* ba*a/kk 7zotlzrzn0j8)dwjo t the location of the test charge?

  A 5.0-C charge is 10 m from a small test cha7/u b xtvc*dfj , ,ym2p(l4fkc5d8s htrge. What is the direction of the electric mspdbt87/ v(*5,u42fc tj,yx dfkh cl field?

  A 5.0-C charge is 10 m from a small kuz5l o9*vz8 ytest charge. What is the magnitude of the force experienced by a 1.0 9lz*o y5ukv8 znC charge placed at the location of the test charge?

  Two point charges eachv6w,y d(lz(p cp:(hua have a value of 3.0 C and are separated by a distance of 4.0 m. What ((zula p:yd(h,pw 6vcis the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed v,ksd/sv ;a2 eat the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is tvvd;k s sa/,2ehe electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick an8 mkh+28tx;y 5yybanx d a -4.0 mC charge is placed at the 50 cm mark. kx5x tyn b a88mhy+;2yAt 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 aro-q c;3ql ;bqky8j0t0 uqre d-e placed at x = 0 and x = 0.20 m. What is the magnitude ouk q;j0 qdq ;8lr-b otq0-e3cyf the electric field at the point midway between them?

  Three 3.0 mC charges are at the three lmeqtm) 4843ngx(*(zthz opn corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charlo(zxnmt*qm (4 pnehz84t)3g ge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charge(-ju; .qy dppas are placed at the corners of the squarep. ad(q-y;jup 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 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 elyq h/7.dmm*aii ;d6nkbw.sp 1 ectric field. What is the mag./bdywsd m6k*. hin im q;pa17nitude of this electric field?

  A particle with a chargez3+p,n oawd afyx8docr; 14;d of 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 fiek vpli qvl2ek946x er7+3kma;ld of 6000 N/C pointing downward. e 3;qmlk7iae6pxv l9r2vkk 4+What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placen 4m+ceqc m:/uhcszffm62as 9te ((x*d inside a uniform electric field, and is suspendedftq9m um*(ce /s(fm2hane c+c6 x4s z: 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. What ia xx; 5l z+:ip;euiqzjft3:,gs the magnitude of the electric field 5.0 cm from the sphere's surqzp+x : luei;5:;x z,3giaftj face?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wnwetuk-kq6 5dop5:r y1q* jsdm e6(r+hat is the electric field 6.0 cm from th 6nr k u5 e(+jr tqo-k5mdwy:s6q*p1ede center of the sphere?