State the law of conservation of iil l;q(z)xk zp-ofh)1k 2n+kelectric charge.

  Is it possible for two negative cha1vao+y5 jowu7 )lrk fk/h9 ji*rges to attract each other?

  Is it possible for a positive and a negative charge 4/csw4geikx b8z98acto attract each other?

  A glass rod is rubbed with a piece of silk. Durin zamqs-so4n-( ca 4rg,g the process the glass rod acquires a positive charge andq aaz4g-s4-o,sn r(mc the silk

  A proton carries a

  The model of the atoq.2i b5yjq 8 a0y ;n gjh+(ssirf3:hvmm shows a

  A neutral atom alwaysnw0pgn sy15)+4wxk4rgn 2xo v has

  An atom has more electrons thacky+qok6i(5uty kc5a i+,rc 6 m (hl6pn protons. The atom is

  Materials in which the electrons are b c 868n/oeph*j xf4rticwr +,gound very tightly to the nuclei are referred t*/ ,eo+gfn8rcp6tj8 4xwhci r o as

  Materials in which the electrons are bound very loosely to;mdrwk4(-7yl;i/h p /n itkqs the nuclei and can move about freely within t;twky nk7 lh4q ip;rm-s /(/idhe material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bv+c vfd:ydybhgxh:.ka3b x ta)1, ,n5ar. The end of the metal bar farthest from the charged r.3dbt, gvx1dbyc na)hk:h ,5a+:x vf yod will be charged

  Sphere A carries a net ,x x/6e f**vxmxgigq+ positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?+ggx/qf x* vimx,6* xe

  How can a negatively charged rod charg1z;5nx (1aqhpv9aw pde an electroscope positively?

  An originally neutral electroscope is brys7y*x 2igu*c:d 3xjjnjy (7riefly touched with a positively charged glass rod. The elgiujny 7y2xj :d*7x y*(jrc3sectroscope

  An originally neutral electroscope is grounded briefly while a positivel3*0mbdck i0or7sp-i utq7(p yy charged glass rod is held near it. p budk70 t (3i-qirsp7 o*m0cyAfter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, apebv)8 tm:) s9,dikvw nd the leaves separate. Then a negative object is brought near the electroscope, but does not tou ,vwe:))tpb9 8dvms kich it. What happens to the leaves?

  A large negatively chargezk*a7.wr( i6 ; kcowrkd 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 followed by the first ball, strikes the first ball, and stops. The first ball rolls forward, but does not touch *7 kwwrkac; i6.kzro( 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 conphb* mhkv-e ;,k0g3aqstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge k5- dh3vgmhbg727bmwis larger in magnitude than the sec7k g7bmw5vhmb2 3hg-d ond charge.

  Sphere A carries a net charge and sphere B is neutral.nw 2e p:m5qjo5 They are placed near each other on an insulated table. Which statement best describes the elect qj:2nmo5w5perostatic force between them?

  Two charged objects qf5ip nqhq ns )5wgw-;b9a0e;attract each other with a certain force. If the charges on both objects are doubled withw iwn -bf5egsq5q;;9pnhq)a0 no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attn( i5w8znmle44*i aaf j,4hvtractive forces of F on each other. If the charges are separated by a distance of d/3, what ar4* zfv5nw8h iet4(injaam l4,e the new mutual forces?

  Two charged objects attract each other with a forceg 9)wdf ft8jp3 F. What happens to 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 original value? The force is now equal t9)j 8fpgw3fdt o

  An electron and a protonw m,0i)hcr z,n are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed n,hzrc w0ni,m)ext to the first electron?

  An electron and a proton are separated by a distance of 1.0 m..o5v:sn*zk4ngl)wj/m s f+ m f What happens to the magnitude of the force on the first electron if a second electr 5fk/s.s lfng4 njvw+) z:m*omon is placed next to the proton?

  An electron and a proton are sepa/a tpvi89lph)q9j4 iarated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer h/ q)vpj9a9t pi8il4a to the proton?

  A point charge of +Q is placed at the center of g;q rzkkess5oi(r8 (.dc.*r9m 0ahpwa 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 the positive charge at the square's center. Now, identical charges of -Q are placed at dai;0rzek(rr (*9 o mkg8.p. 5swh qscthe 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 tb5.g ckuo aae5(nj//g7 m)ueehe centroid of an equilateral triangle. When 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 og5nuka aeeb./g o5 )ej7u cm/(ne of the other vertices?

  Which of the following is not a 0pzlr6oqn-n+ vector?

  At twice the distance fro1pxik ic 6)boe 3apu,:m a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and ja(. l*rqbu y1 md k;lvjz-ub4/. 3vyypositive charge along the line joining the two ch4.jv (*.d yql- /avrzbku bjmyu1l3y; arges?

  Is it possible to have a zero electric field value b9pr.b1ackmb(v o)k q;etween two positive charges alongrbabq91;) vk(komc. p the line joining the two charges?

  Electric field lines near psitive pob k,ie, p7*xeg*f 9n5-npcfmdh hyh93g i./l oint charges

  The electric field shx k/3 wgy hn.5oqh0r5jown

  Can electric field lines intersect kli6:hg drwrwo+sr- 0/z0x.d . seb,oin free space?

  A solid block of metas -b-gsu6 *pfql in electrostatic equilibrium is placed in a uniform electric field. Give a statement bg6--pqss*u fconcerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal8u zn +mp(9z5zp)pcn j diameters are each given the same charge, the e5m u)n+pp z p9z8(njczlectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region ) 5 q4a.afwpx;g.h mccwhere a uniform electric field is dqa.p f5 w4xc.c; gahm)irected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elec x89i+gknpa 4htric charge

  A positive point charge is enclosed in a holloweo:ul/2bhy, a metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow h:be auo2,y/lsphere has

State three properties of conductors in static equilibriud1un 6qima7ohr2f hz9 08-qram.

State Gauss's law.

  The charge carried by one elb x /qx yr3iu0vgkq(y kc9:k-7ectron 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. Hgj5 -lu0.1o kj96u xm xdnse8iow many more protons than electrons does this ui50 m8o.u9kxg e6sjj dn1-xlpiece of plastic have?

  What is the charge on 1 kg of oc0n 1gs*5zo /a5gj rlprotons?

  An atomic nucleus haagd ,n44gjjs0 s 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 and -4.0 mC0 ru1h 9w jzly+3d1w k*nag:lj, respectively. What kj +91*hzdj1r lwuagl0ny 3: wis the magnitude of the electric force between them?

  A 1.0-C charge is 15g p23,c .ds 3o(a zzzw+c6dwbj m from a second charge, and the force between them is 1.0 N. What is th6wa(dgdz p.zco+ s zw33bc 2,je magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.3yn72n:9 n laikah :g+-tpwaz15ah vg0 N. How far apart are they?

  The force between a 7 y+wsn-l+nl7 mzb-73rbrtvm $30 \; mC$ 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. /wbi-kxom*1 h If they are moved to a new separation of 8.0 cm, what is the elkbm/1iwxh o *-ectric force between them?

  Three identical point c6ef0 u iq9qp;tg 25g0limup f(harges of 2.0 mC are placed on the x-axis. The first charge 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 m65pg g lt e(miuq;u9ff2q0ip0agnitude 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 i ,aafak0l k:b yngr.t.+/ax3bs placed at the origin, -2.0 m C to thg r+a,ab /fblt3kk0a :yn. xa.e 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 origin?

  Three point charges are located at the following positions: Q19:nt georl ))n = 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 the9))eo t lnngr: 3.00-mC charge?

  A point charge of +Q isi*d)vm xlmqh/pk 3l *4 placed at the center of a square, and a second point charge of -Q is placed at the uppxll/k* p4)h md3q*imv er-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 the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 mxge6i0g(2vut s c;6e 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 cgeixvs6 g2t0e(6 ;mcu harge?

  Q1 = 6.0 nC is at (0.30k) pv yd 11do5oqwx(5v m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the d oxqkd y5v()ov1w15pnet force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vert4b 9)jrhq 9i*2tzbnimc1e cp -kz6d2oices of an equilateral triangle which measures 30 cm on a side. What is thjpo22ktbn m 9ri6q4b)idzc*cz -e91he magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charge5,qvg ym4+p bbs of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the tw,5bqb4+ p gmvyo 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 charge is at x = 4.0 m. Where oo;p,v3 ah* ifoz :tej2n the x-axis can a third charge be placed so the net f3i:ho *tz jo fpa;,2veorce on it is zero?

  Charge +2q is placed at the origin and charge -q is placzv70fjx-tkcj c0 jw6*+i b5aied at x = 2a. Where can a third positive charge +q be placed so that the xtczv0j*bw i57c+0ij6f ka- jforce on it is zero?

  A copper penny has a mass of 3.0 g. A total of kh(d +95 skbut$4.0 \times 10^{12} \; electrons$ 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 oxt-k,uhwf5v 0f a fixed proton some distance above ith-5fw0ut k,v x. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a g x*37mxvtn;rrc/c1io en9k7y( 6x rscommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion fo 1g tmxrx/7oes;rvcc3*xy9nir6k7( n rces them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has4h7zugd.m/ fs a charge of +40e. What is the magnitude of the electric field at a mzg .4 fhds7u/distance of 1.0 m from the nucleus?

  What are the magnitude and dimn7m+r+:aui:vaeuj *4u- g sirection of the electric field at a distance of 1.50 m from a +ai nuv7m i-jr:a+mus*: e4g u50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is thez v-e 2fo/of+z)qsgn1 magnitude of the electric field at the location of the te)osz - f/ozf ngqve12+st charge?

  A 5.0-C charge is 10 m from a smalltp6u;u;8 plprap a g)6 test charge. What is the direction of the electric field?a gp;uputp;r8)l 6p6a

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the ft5p ;w qp ;v66xvc;lnncg 7m )d5*ecqcorce experienced by a 1.0 nC charge placed at the location of thdxwt5q)6;e;lvqc6 ; c m7nnc*vcgp5 pe test charge?

  Two point charges each hu s w5wz+g,.2wjz z 4p8*lghhvave a value of 3.0 C and are separated by a distance of 4.wvggw 28*p hsj .zzzu,l 5w4h+0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placmy4i8bh v+ +i:pt.v/rc xtez1ed at the 0 cm mark of a meter stick and a -4.0 mC charge is placed a/ex:h pyi8z.i 4m+crb+vt1 tv t the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a me-usphcox:10 f ter stick and a -4.0 mC charge is placed at the 50 cmh: s0poxf1 u-c 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 x =38jf rpqz ;a7b 0 and x = 0.20 m. What is the magnitude of the electric field at the poin3f7z;8qapj rb t midway between them?

  Three 3.0 mC charges are at the three corners of a s0aho+tjxoiw1 x; *6if quare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the a h if*t6 +xow0;ojxi1square.

  Consider a square which is 1.0 m on a side. Charges are plae-vtl05lifa/ t 3 ,hzjced at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1,0zv3 ,jla- tl/ thi5ef 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 unyes of +2l(pyf bu-7-kiform electric field. y 7y(kupof2e- b+lfs- What is the magnitude of this electric field?

  A particle with a chargei3v,.d:oon/h s ctg4n 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 ga :2lzt,oslm6 3v -dhs is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the balzh,sl63om2 as-dv: ltl for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is plac.a/9:wzc k;) hayni4t4f mrk oed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitudc9).h aaym f kt:zw 44nr/koi;e and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Wha* ozhwd 0tr(/,rqm1e 2hzvtg;t is the magnitude of the el(h wrt,h z;md*g zet/o 0r1v2qectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carr i4af9fsiv d k-o-.q(ties a charge of 3.0 mC. What is the electric field 6.0 cm from the center(-ta-4 d.f vi9fqoski of the sphere?