State the law of conservaa+9tfiih r6-pu qj( 3vtion of electric charge.

  Is it possible for two negtvfok, bpd5 emy(g0xm.) a ntnf z.kl:tb2- 79ative charges to attract each other?

  Is it possible for a positive and a negative charpwyt(01(* . hq)zw cjxqiipq 9ge to attract each other?

  A glass rod is rubbed with a piecbq0e 5w t,p,kdq 5zrii7unz1 /e of silk. During the process the glass rod acquires a po5wt,0 qkiibrne1 u d7pq/z5 z,sitive charge and the silk

  A proton carries a

  The model of the atom shows aj n p9fj2kh+*m

  A neutral atom alwaysu7 nph: 9kph+*gydl .tpo5fuzl )q(.e has

  An atom has more electrons than pro(xkzrq v) yr:-tons. The atom is

  Materials in which the electrons are bound verz 9;t j6cj)5t2dwuza ty tightly to the nuclei are referred 9 )djt6tt ucz ;a52wjzto as

  Materials in which the electrons are bound very loosely to the )esm n: 5z0ixvnuclei and can move about freely within the material are referred toxi:msz50) evn as

  A negatively charged rod is brought near one endkfqrd 72r0xun4fw g55 of an uncharged metal bar. The end of the metal bar farthest from the cd50wg5 f7ruqf 2x4rn kharged rod will be charged

  Sphere A carries a net positive charg4a( ,/ ed*ahg;o sfmfge, 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. Wheho*f4/f,m;g (a agsdich statement is correct?

  How can a negatively charged r() z8chy )cmp5crc-mood charge an electroscope positively?

  An originally neutral electroscope is briefly touched wit+;4yv a lfe 9f 2yhdy z06stfkv415vflh a positively charged glass rod. The elz6lfvvhf 5a 144ly90 t+kyv; de2fy sfectroscope

  An originally neutral ag :,0nzgjma- * fvc+*uq7uvdelectroscope is grounded briefly while a positively charged glass rod vva*mnda+u *uj c,:gf0zgq7- is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral t-q -(20po yxcyo ul)eelectroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leav -y -(et)0xoulq2po yces?

  A large negatively charged object is placed on an insulated table. A neut+z* q x3/5,kfaqh13z z pihdrzral 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. At no time does either ball toucahx5,pr/k1*3 +hzzz q3i qdzfh the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb coo3motn0jv-,- mf *sfrnstant $k$, which appears in Coulomb's law?

  Two charged objects arek:bubse6/l9 4v2swtew 5vsrj //u rt0 separated by a distance d. The first charge is larger in m/:rs/b/t4w 6ksv busl9e evurtwj052agnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nea 128x)hul 6c5zxesgkp i qbd(*r each other on an insulated table. Which statement best describes the 5(g6*ph)l xec2xuiqbds1z8k electrostatic force between them?

  Two charged objects attract each other with a certain force. If the char offhg-5(/hap.::k/+ fki4h;v rnvcty sj sg( ges on both objects are doubled with no change in separation, the force jpt .-aks+y i(g:/s;k4 fhchfgovfrv5: nh( /between them

  Two charges are separated by a distance d and exep tqd0tgnb89m5a2vdg35 wd *ert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the 0bn de 9d5w2t 3vdgpaq *mg58tnew mutual forces?

  Two charged objects attract each other wir o/pr wanob*3/tx( +lth 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 centers is reducedop+aolrb/ /xw(3rn t* to one-fourth its original value? The force is now equal to

  An electron and a proton are s4r il.py9et6xeparated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second el.l 6er4y9i xptectron is placed next to the first electron?

  An electron and a proton are separated byqhak7:aeotwnjn hc.. j)7b (2 a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is)c( eo2j.7kna: hq nt7jahbw. placed next to the proton?

  An electron and a protiwu)o*m ,nyxy/ ,k0ajon are separated by a distance of 1.0 m. What happens to the size of the forc0,ywji mn*),/kyxo u ae on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the centbpb1z 7l 2m:7t,)ohj fbwr7bxer of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an e tbrmol:bh,)p 2wzj 7b7x7f1 blectrostatic 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 the centroid of an equilateral triangle. :o- e 9enldp1 fihj+i)When a second charge of +Q is placed at one of the triangle's vertices, an electrostadhe-+1jlipf:) i 9oen tic 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(- yv+:hu p; bdqydsn; is not a vector?

  At twice the distance from a point charge, the strength of the electbv9bm m.x7 0a1p /c av,yy/wxqric field

  Is it possible to have a zeror12lu raf1cprmss7scj18 ; u4 electric field value between a negative and positive charge along the line joinin uscaf1rlmu17 sj;s842 1 rcprg the two charges?

  Is it possible to have a zero electric field value between two p/3e awjytib33 js*l.)nl ijn+ositive charges along the line joining the wb *3iy. alenn+/ti3l 3jj)sjtwo charges?

  Electric field lines near psitive porptwz-3u :c/04dvnww int charges

  The electric field showsa n:s6*9 9xtcvgv7iz axvub9gka04 ; n

  Can electric field lineo*)z , 5jtvy)eu/m byps intersect in free space?

  A solid block of metal in elec c9-pxtif2r0cnu (g .qtrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the bloc(g9iqr ctn0xu c -.pf2k's interior.

  If a solid metal sphere and a hollow metal sphere of equal db9p*bi: -*pdhki c f,xiameters are each given the same charge, the electric field (E) midi 9ihfx p*, *pck-bb:dway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a lgv;aui:t*/:kx m 6cmregion where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top smu: x v gkma:it*l/;c6urface?

  If a conductor is in electrostatic9unp, eafy4)x( d.snz equilibrium near an electric charge

  A positive point charge is enclosed ing 7 (opjcs;5aw a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, th7ap5g;swj c (oe electric field at a point directly above the hollow sphere has

State three properties of conductors in statyp ok,cj96) :qusr dr1ic equilibrium.

State Gauss's law.

  The charge carried by one electron wthiwvt69gx.v3 6, sqis $e = -1.6 \times 10^{-19} \; C$. 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 thaypf8 )o7l5.pw/-t gqd /uqmnwa gmq(xy5:d 5nn electron:mxd5t lu(fpgywa/q)nm -on yq5 /gqw.d58p7s does this piece of plastic have?

  What is the charge on 1oa63u at s8t,y,-qx 2hew4gxe kg of protons?

  An atomic nucleus has a charg;9nnbaz)rx:v e 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 o / d,xp1e4s.13is -wn4bvcfjec3x yyand -4.0 mC, respectively. What iswy3ic3oe cns fbx/p1j,.xedsy 4-1 4v the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the ftq .6f 6po:kyoorce between them is 1.0 N. What is the mf6 okp: yqo6t.agnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are thfwqz1)z0 s 9tu9bty s.ey?

  The force between a m uetrnm s-h3cs x,;w*d4.dg 4 .y4bqa$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienb1d /x01lf al mm c 4l)pvheks-7ah1k2ce a 1.0-N force. If they are moved to a new separation of 8.0 cm, bl7dasl / kv)plhfc1h421a10e xmm- k what is the electric force between them?

  Three identical point charges of /amh. k upin1+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 magnitude amk1/ui.n aph+ nd 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 +uo .rdj j;nz:kbt8s-i iw82k.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 disz2i uwk j rt8ni.oj 8kb:.d;-rection of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the fjt.e:50 cngsw4ack +iollowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mCk 0w+: tjn4i5ccesga. at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of 6 w 8-cnv y-(zxepg+fia 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 the force that acts on the center charge if a third charge of -Q is pla-(gyi6 wcz-xv+efnp8 ced 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); w a8jvy:sft. ;m:aat4 Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on thet:t84w ; :ajaa.yvsfm 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10g.iywxm.c k06 m); Q3 = 5.0 nC is at (0, 0). What is the direction.mx0icy6 wk.g of the net force on the 5.0 nC charge?

  Three identical charges of 9p.(pgj ;onor ) afly*)8bthd 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 which acts on any oner )dnt(gjh8l pb;)a.p9 o *yfo of the charges?

  Consider point charges of +Q and +4Q, which are separated,kx8 suaoz3d g9) ut 5pytih2egt(9*a by 3.0 m. At what point, on a line bsx tka 9hoy z(t5e, utp3a)8gu2*idg9etween 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 o,t4/jkn dppp0pqg4 e 9owgs1im.)hn 7rigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third cjq 1osw0 /t)9egpdg,.74 pmh nin4 pkpharge be placed so the net force on it is zero?

  Charge +2q is placed at thldw ng8/k/ b2fe origin and charge -q is placed at x = 2a. Where can a tn/bkld2gw /f 8hird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass 9 f7xdn/l23vinignsw or,0)p 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 fixes k1q v8+ mf 4ai(7d2xhtmpiw9d proton some distance hms9i 7mpfx(dv k82i +qawt41above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncondtm: *:a9 s5-rz48 ayfrgfvxg kucting threads which are 30 cm long. Both are given identical charges, andrtv*zf 4kg:a y59 mr- xa:g8fs 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 magnitude im09umo r17mwt hv)b; a96 hvoof the electric field at a distance of 1t7v wv61ioh;rommm 0 9 )h9bau.0 m from the nucleus?

  What are the magnitude and directioo9j/*(kokalr3(4t xz1a lwa en of the electric field at a distance of 1.50 m from a19l4ea*3jz (olk o/rktw (ax a 50.0-nC charge?

  A 5.0-C charge is 10 m from aufd*/plq5mk0rixcy r; *j w/c n+.5nu small test charge. What is the magnitude of the electric field at thj/5dcw/.;ynlp0fru +qxcm ikr5**n ue location of the test charge?

  A 5.0-C charge is 10 m from a small test charbd91j83w y7u mgjqv1yge. What is the direction of the electric field9mbd8 j17gyv 31jqyuw ?

  A 5.0-C charge is 10 m from a small test charge. What is the maoyg m lqaj/ig0u-2 )*tgnitude of the force experienced jgyu 2l ga- )qm/*0otiby 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 separatht,i;f a(dba:ed by a distance of 4.0 m. What is the electric field at a point mid,(:hb ai;atf dway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC cha fjyst( o3u 2)dv7h.jmrge is placed af jv7mhj y)3ou(. d2stt 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 kb+-8 cg:kn )kfcapvb.uy 7(fa meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric fin)(8pfk.:fvk bbyg kcu+a - c7eld zero?

  Two point charges of +3.0 mC and -7.0 mC are placed a c-0ov4; crsk7blxt.x t x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway bo7cx;x-l.c v tb s0kr4etween them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The l0l rcb3gvr3r bouto)w ;v/4a ,ast co40w/lvra)o vo3rb;tgucbr,3rner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are plr6h1 npgb39i laced 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 magnitude of the electric field 63p bl1h rign9at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a b:52fksvxo -h .z+e2r8 b nztvuniform electric field. What is the vn5f8b-ehzb: rz2svx 2ot+k .magnitude of this electric field?

  A particle with a charge of 4.0 mC has a man 8-74gn lt3rffht/flss 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 )c38i/t +pvd vgj,xfm electric field of 6000 N/C pointing downward. What charge must be pla 3vt8i,g/d p+)fxcm vjced 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 place0iiyh 9ph7/9on1wplf wnn )/sd inside a uniform electric field, and is suspended against the force of gi n f9/0wl9w71n/ yp)hnh pisoravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 e)6tq .f gdt8vcm carries a charge of +2.0 mC. What is the magnitude of the elv.tf8 6et)g qdectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm c.7d +js na.nnf icu9(jarries a charge of 3.0 mC. What is the electric field 6.0 cm from the ce.ai 7jj unf n(+s9cd.nnter of the sphere?