State the law of conservation of electric chargea-l,fqwu 6t gk5mm ..n.

  Is it possible for t b lg;he h8rkq7;nu-4vwo negative charges to attract each other?

  Is it possible for a positive and a negative charge to attractl )4d:r qx0)gxs;hzv uq2c9mn each other?

  A glass rod is rubbed with a piece of silk. During the processnyrq0 6zerp cs2 lg86- the glass rod acquires a positive charge and the silk lgrzr602ycsqn6-e8 p

  A proton carries a

  The model of the atom svumzt69,c6psa2,sdm; nt2j k hows a

  A neutral atom always has 3t .je2 :(lpel hopilmbq7c b5esu948

  An atom has more electrons than protons.q2rg ,7frakskergjn 3. i.8u7 The atom is

  Materials in which the electrons are bound verrz89r 11ln .am2tnh tpy tightly to the nuclei are referred tamh rrz8921 1tnnl.pto as

  Materials in which the electrons are bound very loosely to the pv+ tc4um8v 3f:ov/ywnuclei and can move about freely within the materia ytvv uwo3pm cvf+8:/4l are referred to as

  A negatively charged rod is bolj 5 zet46/0idrxm,ejp6fz* rought near one end of an uncharged metal bar. The end of the me e4p6rfd6e*x0z zijo/t5 jml, tal bar farthest from the charged rod will be charged

  Sphere A carries a net positi s/g (rwku3mz,s4zfzny7 h8 )cve charge, and sphere B is neutral. They are placed near each other on an ifm kzszngs),h8w7 yc3rz4/( u nsulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope 2yk mxwc37 :u nvog/;hpositively?

  An originally neutral electroscope is briefly touched with a positively chaza obc nn2pd0 qn,(r(kni -70erged glass b(i(r0 7ned-kpan,nq2cn0o zrod. The electroscope

  An originally neutral electroscope is grounded briefly while a u0 bv:j(1jg-v r id)bvpositively charged glass ro01ivu j :drb v)v-jg(bd is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and th a*df6ta+*6qra o:c mwe leaves separate. Then a negative object is brought near the electroscope, b6 oq6a*+a:tfc*rmwd aut does not touch it. What happens to the leaves?

  A large negatively charged object is pl3ksvc 4i:-md gzm(ky6ju fj99,i lx +zaced on an insulated table. A neutral metallic ball9uz vijs yg mkd:k-c+( i4jf,6m 3lxz9 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 )iho gy,rx293piv5 p )oqq. :o5ciep aCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dr ,idvv + gz9c8b/ny4vistance d. The first charge is larger in magnitude than the se9 bi 4,gdvnry8v+v /czcond charge.

  Sphere A carries a net charge and sphere B is neutral. They are place 0yrp7o5s lf3id near each other on an insulated table. Whoisf5 y30lpr7ich statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certai3n*sgq) z .euezf 9+cun force. If the charges on both objects are doubled with no change in separation, the force betweu9ugq.es +c3*zefn )z en them

  Two charges are separated by a distance d and exert mutx l5 w/luidq34ual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutuax/q4 dl5u wil3l forces?

  Two charged objects attract each other with a force F. Whv 4/zssdh.oj;w4k4 1rxw5 hjdat happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their cenwkh ;1rj/w5z o hx4j. sv4ds4dters is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are se0 7p ,pay+acew hsppbk;9 o.h/parated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron yh ./wh7c pp 9b,e;o as0+kappis placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens / -+fua.mu/* otwk:jpclo rg2to the magnitude of the force on the first electron iftrjmpa :o/- u ogk+.wl*cu 2f/ a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1. apledt,9; vgpn q5p pit8*o5,0 m. What happens to the size*oi,plqdp ,t5;pevn 9pt 58ga 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 at the center of a square./x* ;pmf8 bnxhq4a: uv When a second point charge of -Q is placed at one of the square's corne pm8;nxxh4/:fuqab v *rs, 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 placa;hmax;cs g51o 93zd oed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of ta gdh;5xa 3oocz9m 1s;he 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 other vertices?

  Which of the following is not a nd5,e7xmld+c5l dl;o )n*gievector?

  At twice the distance f79hecv8we2 nr,y4v c(z(sr z-v8eqn mrom a point charge, the strength of the electric field

  Is it possible to have a 87xeuy b+ ipp40o jvl.tq4l 4jzero electric field value between a negative and positive charge along the0ylx +p8.44v ltqbjop 7ei4ju line joining the two charges?

  Is it possible to have a zero electric field value between two posi 9ycr)ll1zr1,jy o;fztive charges along j1zo y 19; )rlyzrcl,fthe line joining the two charges?

  Electric field lines near psitive point cha)x-nwz m/bw5trges

  The electric field showoidce/v(2pf odk6ilk(c9 8l;n

  Can electric field lines intersect in /ocrl3fuj0ivc 1s0kkr3/ 4 gsfree space?

  A solid block of metal in electrostatic s-vzqw88.-d7n(hv.m m uvgp eequilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's uh-8e 7mq-zp (8mdw vnsv..vg interior.

  If a solid metal sphere and a hollow metal sphere of -(2b h9z88.n7gnqusvw my c piequal diameters are each given the same charge, the electric field (E) midway betw 8z.q7cgmh pwynsn9(8-i 2 vbueen the center and the surface is

  A cubic block of aluminum resz hrj6e jjg:47ts on a wooden table in a region where a uniform electric field is directed s7j ejg6 zjr:4htraight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostj3 qmm+g4/s, dnegnh 0atic equilibrium near an electric charge

  A positive point charge is eda/ 6f + j9k*5xy/jnyafabnj5nclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sa9 5jf kaj/ay5xdny nj6f*/+b phere has

State three properties of conductors in static equilibri3agitlqw,g) gm go5:6 um.

State Gauss's law.

  The charge carried by one estq ze+w 9-wlmuvd:ozo.;g 4 4lectron 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 than,gdw8r j9i2zp electrons does this piece of plastid2izgr p9 jw,8c have?

  What is the charge on (z*ogda h k.c hqff9vz2;k52e1 kg of protons?

  An atomic nucleus has a chaz sc)w:,df-o8qnoz :hrge 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, hc6s uv-+v0 byp8otiox;w * pl3ave charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between them*copl+3 xpy ibo-v6tw;s8uv 0?

  A 1.0-C charge is 15 mtdx+6k gl7 *:htw;mhx from a second charge, and the force between them is 1.0 N. What k g6t7l:hh;twx*m+d xis the magnitude of the second charge?

  Two 1.0-C charges have a g4m*sb,)zr1oh 1szpt force between them of 1.0 N. How far apart are they?

  The force between a * cwdp e/yr3g,bsj;g3$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience/ysk cbvd7,f86lp yh) a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric forh 7,lc8 y)ys6k/fvbdpce between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first canz j 0 m-,z(-a h+3o*nlmkdrjharge 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 mrjzh3mnnj +aa-*l(- k,dz0 o acts on the charge at the origin?

  Three point charges are placed ondecop3 7p5 y+ f,/wgws 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 magg5dc,ewwy+/sf3 p 7 opnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following pos+vzend86/ rj .mfc f-sitions: 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 ofvrf8+zdmjf c-e6s. / n the force on the 3.00-mC charge?

  A point charge of +Q is placed atj, :dqr3wwd(s(n 6ofnlm,g8 q1y ;z h rxn+6jk the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic forcklf6dmws(n 1ngz: y j+(x3r j8r,n;ow6hq,qde 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 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 ;ds,:-(v cryza0hp+hvb/gn x3 qw-hgtdz .d* = 5.0 nC is at/avdd zggw +zbc-qh, yhp*- ns 03xdt.v:rh(; (0, 0). What 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 at (0, 0.10 m); Q3 = y(2cet+i rui2:x)plf5.0 nC is at (0, 0). What is the direction of rutc2eyi f i2(+plx: )the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mww-jcr a7iu96 C are placed at the vertices of an equilateral triangle which measures 30 cm on7iwcu6w 9-r aj 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 m. -qscvc( men zzplp:-l* 93d;u At what point, on a line between the two charges, would it be possp*c(els-mcnu;-z l :p9zq3d vible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at t;*;rj6ewm dug he 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 net force on i; d*;mguw6rje t is zero?

  Charge +2q is placed a e(cpy .0xoj(qt the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so tha.yj e(0cxpoq (t the force on it is zero?

  A copper penny has a mass ofcanl71e80 *:ij5edre)gxxw u 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 gra kni ;gedd:)/f+/ma kavity by the attraction of a fixed proton some distance ab gkanf/;ei+k d/)am :dove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point )ncte kjz31y2x.q d i,0tb7q a0gc :krby nonconducting threads which are 30 cm long. Bt:je c ),cadtyb 10 zq.kr20iq kng37xoth 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 maaa,h4dsy/ /k8 +yvx :bcsg on0gnitude of the electric field at a distass4+gay8/c x,0yb hdk n :o/avnce of 1.0 m from the nucleus?

  What are the magnitude and direction of p9w ,9pg:/ tkmbnzur7 the electric field at a distance of 1.50 m 9bnt p,wz/grp m 79:ukfrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the x: q4w) esuse50uvg+ rmagnitude of the electric fieuu0vs4ewx eq +r :5sg)ld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What ise j n*vrxyn9+t i6ch e+wmg 4gr/;8j(u the direction of the ev/ u6gnh 8t*r+j 94imere;j cgwn( x+ylectric field?

  A 5.0-C charge is 10 oskxafw.m.0oo73agr r* 3o,3 uc v/fhm from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location wo 3mvo,r 3.s k*a 0h7fug3/fcxroo.aof the test charge?

  Two point charges eavk4iy4 jwo kt)4a l:f2ch have a value of 3.0 C and are separated by a distance of 4.0 m. 4ifo)a4ytkv j4l 2 :wk What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed(m)gb ,f 2xeeelto 3b2 at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the el22bb3lgef (e)m oet,xectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 d q,o;q1uw6vxcm mark of a meter stick and a -4.0 mC charge is p;,qxu6v1owq d laced at the 50 cm mark. 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 xwnh,8mv ot .4p = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between them?4,w8.omvhtp n

  Three 3.0 mC charges are at the three corners of a squayq j;gy is7n5h8o0l *nre of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center oh50n*sy8 jq7;gy inlo f the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the cornexb:k,* l 3riwly(rg4 y eak22prs of the square as follows:p:,geb 2ar3kyy(*i2rlx 4 lkw +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 elec8mg 1st+ f1;1lm0 7dpaueb nq qdfre70tric field. What ismrqbf0d81t17m lfe a qeg;d+s0np1u7 the magnitude of this electric field?

  A particle with a charge of 4.0 mC+ m:b hb5viou: 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 ple uc09f lp3w r; ;*dw+g,bzlkqaced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suscbuw;0l l,fk wrg;39zd q+*pepended?

  A foam ball of mass ge*9q89s iz qg0.150 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. What are the magnitude and direction of the electrg zs9e9qqi*8gic field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Wyg*j r8,e;gbezwm-w *)tu ,hj hat is the magnitude of the electric field 5.0 cm from the sphe8b,eru*megw* gh )zj ,j-t;ywre's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What28zdq+fw dm ;h is the electric fi;w8hfd+ 2zmd qeld 6.0 cm from the center of the sphere?