State the law of conservation ob k*hd,4twbs3 aq)zi-f electric charge.

  Is it possible for two negative charges to attract each othel69(gzu sv ig: ob-gb+kue5n 8r?

  Is it possible for a positive and(-i d9psqs1)yd h :atq a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glasmrd1s f6+r 3zws rod acquires a positive charge and the sd+rwf1r3 z6msilk

  A proton carries a

  The model of the atom showsbei m :vbv r50vw/d,,v a

  A neutral atom alwaysv6oe mh1 gpoer b.oh;516+zml has

  An atom has more electrons than protond cf9n4ijl.o(* ma:rps. The atom is

  Materials in which the electro6pa;lgrird4c7k a2 g6g /qy8 bns are bound very tightly to the nuclei are referr;4ldq8aa6/ gcr7br yg 6ikp 2ged to as

  Materials in which the electrons are bound very loosely to the nuclelp06)hhdk fv5d lit8 /i and can move about freely w6vhkd/8plilh0d f5 t) ithin the material are referred to as

  A negatively charged rod is brought near one end of an unchargeddgt: + x+4k,e ncjaml( metal bar. The end of the metal bar farth+ ga m :nl,jtk+(cde4xest from the charged rod will be charged

  Sphere A carries a net positivi 5vza7 /a2,7diyiu noe 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.y,n2iu 7dii/7az v 5oa Which statement is correct?

  How can a negatively d;ps1xdk 6r8j ( jdjd/charged rod charge an electroscope positively?

  An originally neutral elect8x1 yqkcgsyxpl xopdmg 5 ,6/8+wo;:vroscope is briefly touched with a positively charged glass rod. Tqy ,xg/ p xk5:pcwxvsl8+1d86mooy ;ghe electroscope

  An originally neutral electroscope is grounded briefly while a po-i*1 *pagmv8eb ;ctnhd/6mpb sitively charged glass rod is held near it. After the glass rod is removed, the bapdmmn e* /;vp 8*hc-g61bitelectroscope

  A positive object touches a neutral electroscope, and the leaves sepa (sk +b1hsgnr 0+b3qnyrate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leavek1bb+s+ (3 gny sqn0rhs?

  A large negatively charged object is placed on an insulated table. j +v velxtit(8 b/2q cjll48c: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. vt+j8q/:lc8 j2iv4lcle(bt x 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 constant wf q)6) 9ohoj gmz1;ik$k$, which appears in Coulomb's law?

  Two charged objects are sepa ng7:n:zme +lerated by a distance d. The first charge is larger in magnitu 7+:l: gznmenede than the second charge.

  Sphere A carries a net charge and sphere xsaj6)ppi-a8:l -ozoy 0bz j 0B is neutral. They are placed near each other on an insulated table. Which statement best describeszpbios a-pyxz:0- ) jj 6oal08 the electrostatic force between them?

  Two charged objects attract each other with a certain force. /bess ein8o1993 y bnn If the charges on both objects are doubled with no change in separ/o e9enbbn y18 nis39sation, the force between them

  Two charges are separated by a distance d and jux63 7n5vhf.wrr tp3cu* 14g 8prndl4rw.ii exert mutual attractive forces of F on each other. If the charges are separated by n7j1 vri5r4p* gwci.uur.4 w3r3 l8nhdfp tx6a distance of d/3, what are the new mutual forces?

  Two charged objects attract eaclfd2h/iic6zdh,3 76m1sci ozts h18s h 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 center6dc7d1s3 ohi ,t chl mzsf6i218iz/hss is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated bqy6k(op mr,h xd+um4 t8jfj-en7 (id(y a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is place8+q(r j f6tomu hd kiey-x(pjm4n,(d7d next to the first electron?

  An electron and a proton are separated by a distance of 1.0 mh:y;8yc0;m q mtqgue). What happens to the magnitude of hmgut ;0e )q;qymc:y8the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 ek9s);ewg y1h1 roz w:m. What happens to the size of the force on the p1he) 9rw1;oz ks:ygweroton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squyt5boajqdw67 rqfn s*8() .xm are. 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. What is the magnitude of the net electrostatic forcefwb6q)ay8 xm*d5j. soq (tr7 n acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral trianyd 1*vnns3ka)1q d5a9b*ao cpgle. 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 thca a**d3)n1bs vdp9nqo1 5akyat acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followiwd9h +lr89 p r* ovjum-0el6htk9 7jjpng is not a vector?

  At twice the distance from a point charge, the strength of the elei , scjted2k 91wh,/:ui9kau+sn1 lqzctric field

  Is it possible to have y(9g;ob c0 ,njkgfjw3 a zero electric field value between a negative and positive charge3(9knb gjj ,;oyfcwg0 along the line joining the two charges?

  Is it possible to have a zero ere,9r;oto * :p*dggqp0gvlt 7lectric field value between two positive charges along the line;t* gqrd9oltvg7perpog, :0 * joining the two charges?

  Electric field lines near psitive point cha szes9-hf5 td;rges

  The electric field showy8r vgs,8+hicn

  Can electric field lines intersect in free spacer(q6p3f0 yj;b g ayd-u?

  A solid block of metal in4jr3h m(0uuju3bz i.r electrostatic equilibrium is placed in a uniform electric field. Give a statement conc(j0uz rmui3.3ubr hj 4erning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diametmcu99x5a6 s jvers are each given the same charge, the electric field (E) midway between the cenus6aj9 m 5vx9cter and the surface is

  A cubic block of aluminum rests on a wooden table inh 0* jftifl4/n a region where a uniform electric field is directed straight upward. What can be said cnl*ht04/ f jfioncerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chgy4xc:,ckx ;hwp 3- (ijgh9 akarge

  A positive point charge is enclosed in a hollow metallic sphere that is groundedc9n b1/y+u 4q-ex vpgdb*m l 95vcnf2n. As compared*d5 c4-+qu2l bb9xnvgpvyce9 /n f m1n to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in staqljdls vv*na0:2e 1 m*tic equilibrium.

State Gauss's law.

  The charge carried by one eli sv6b be3v15lectron 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 ha;m - x.omz ce5f(awvbc,b*:ojs a net charge of +2.00 mC. How many more protons than electrons does tocb c mx : 5*;b,v(.zfoaej-wmhis piece of plastic have?

  What is the charge outl* y*o)whu u5y6 xp:n 1 kg of protons?

  An atomic nucleus has a charge of hyp0yg as5/ 3p$+40e$. 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 l3y ear;7fossxs75x7 values of 2.0 and -4.0 mC, respectively. What is the7o5 rex7xya s fssl;37 magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force y/yznyia 9tyi5,/ l) tbetween them is 1.0 N. What ly )/ ,9 y5/yiyittnzais the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Hlt q;:zhntk1yg(bz7. ow far apart are they?

  The force between a /tgv, p4.7imsj j/ tsi$30 \; mC$ 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. If.4s,me z,l /,yjpyp me they are moved to a new se.sp y ,ml,e j4pmy,/zeparation 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 first chaltd9m54zct8 m rge 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 thz89dlt m5t cm4e 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 is07:h8j64e7tch4 xmj+ -bwvpz2 rewlue pf7 qh 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 electrosp w7lxjt zcuhfm:+bv42 8eh7 0j pe6eqw4-hr7tatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x = mnrzq 95vr9n3l9 q1u p9yy4sh flw/8j1.00 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 crp9 r9/qfln 5un lq9hwv zj14 3m8yys9harge?

  A point charge of +Q is placed at the center of a square, and a second point cha+a f2bpx*x2qtrge 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 t 2+fxxqbp*t 2ahe 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,l. trrixs( -y1 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on th(sity.xr r1-l e 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -u(t mp:yx1ya -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). y (1yumtax:p -What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mCwoiie8ypo7 b /f a20.f are placed at the vertices of an equilateral triangle which measures 30 cm o0fi 27 8pi wy.a/oebfon a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q a v yc*mfp3b9,nnd +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge 9vnf,cpb*y3 mof -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origk.zz-da:)g1qn,au zl-- chp fin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be-c -h-f: knzzdzgqu)al, . ap1 placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q 6 rwayd+l m:e(is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is z+6 e:(r dalmywero?

  A copper penny has a mass of 3.0 g. A tkf 7z(rg 4 m4gc;x9zzq*kt4plotal 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 fixedo.bqr 0ac7/y tb;p; op proton some distance above it. How far above . by;q /o0prpot;7cabthe electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thrtu d(2t- 7s8m nvi)-goe:xya6 lt 8bsleads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart u lm8igt-:- 7 antx)d8s2ls(bou6 y evtntil the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +kwe3 e(kufx6/40e. What is the magnitude of the electric field at a distance of 1 eukxf6ek 3(w/.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.lnet) e+,id0 g50 m edg0l ,t e+ni)from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small2b+xyj kv167n+bow cv test charge. What is the magnitude of the electric field xjk7c6ob+ 2vv+1y nb wat the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What i 0zh(9k.mk xpiibz) n(s the direction of the electric field?nk )bh z( 9zx0(miip.k

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude/ ,3h,j- 8 wdno--goq owqutie of the foruoog, d- oh tw-n- /q8iw3qje,ce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separatek,:l cxt (s9ond by a distance of 4.0 m. Wha(s xc,tl k9o:nt is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark ofx0y5,hs68acefork o . 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 m hf .0,85ao kcyx6eorsark?

  A 5.0-mC charge is placed at the 0 cm mark of(zd h3a3ezf 2h7dgn6c a meter stick and a -4.0 mC charge is placz3d3 (7dec 2fnhzag6 hed 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 x = 0 and zvgnx5d +p/f x2:6p3vgvblu(x = 0.20 m. What is the magnitude of the elect( g3xnld/vpv:6p 5zgu2bx+fv ric field at the point midway between them?

  Three 3.0 mC charges are at thca (): v7v1 pgmokn0aqe three corners of a square 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 square.1mv qo0n7kva:p (c)ga

  Consider a square which is 1.0 m on a side. Charges are pw8c zm pc)wi(/laced at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1);z/i) (8 wmcpwc +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 og)-4ibbi+ ahw f 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fi+-ib)hbiwag 4 eld?

  A particle with a charge of 4.0 ;h.l)cjc 2hdn1 2/ uxngces4 lmC 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 electr;)jsxjifwo, 8t 63rrd* 4er moic field of 6000 N/C pointing downward. What charge must be placed on the ball for it to*m)4 setjfwi8 j3,ro rxr6d;o be suspended?

  A foam ball of mass 0.150 g carries a chargmll7q9y3/ 35cznuo xj e of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magni73qc/njy m3 lol9 zx5utude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is ogd 7dtvz ejhfi//p, ks3j)-2the magnitude of the electric field 5.0 hji/ k7)vdfejtg3/2osd, z -pcm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge ofgvvt7d*s8;4loh/ .bqh0gs z q 3.0 mC. What is the electrigv7z sdo48qg;0v*t.sql hh/b c field 6.0 cm from the center of the sphere?