State the law of conservationr wm*-qorbe 5b,.mjjnxcyqjcl4* (1. v9yhf 5 of electric charge.

  Is it possible for two negativ ( l52gc12b) (o7qhidpz wxykoe charges to attract each other?

  Is it possible for a positivug ldo)sdu1b3g e)7 6ho;:wdie and a negative charge to attract each other?

  A glass rod is rubbed with a piece of sx(jxxov685h pgu9;vo ilk. During the process the glass rod acquires a positive charge and the si 9(hoox;gxuj6 v 8vpx5lk

  A proton carries a

  The model of the atom shows v 1iqx83v j-t,t xhzw1a

  A neutral atom always hhdm ;9 ydehm4/as

  An atom has more elect on-zy- m;g/e.8owj wtcrl (k(rons than protons. The atom is

  Materials in which the electroni7 n3 1 fyjy;gmlc qr, tlmrd.8b2)m18trxpy +s are bound very tightly to the nuclei are referred m)ptm;im b7y1gc+d1yrx 8yf.ljnt 2,r rl8q3to as

  Materials in which the electrons are bound very loosely to the nucle)ovqocjp98 x u, ,jps0i and can move about fr9v,pscpj, o8 o jqx0)ueely within the material are referred to as

  A negatively charged rod is brought near one end of a tnzrq-(5yy g*n uncharged metal bar. The end of the metal bar farthest gq(*r 5-nz tyyfrom the charged rod will be charged

  Sphere A carries a net positive charge, and s3vw.q o6uph,i w4y/ lrphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with 3h,yq/ .pri 6lvuo4wwa wire that is grounded. Which statement is correct?

  How can a negatively charged rod charyb m/9e m* vjdi b0bgqr+7.o8rl)o 1qjge an electroscope positively?

  An originally neutral electroscope is briefly touched with a poa (d0rrp oj, fgbsoe4 yr619-ssitively charged glass rod. The electros0e 6o f(ba4 rs1jr9ogr,spd-ycope

  An originally neutral electroscope is gros;,tc6 pfszd,unded briefly while a positively charged glass rod is held near it. After the glass rod is removed, th; sc,6 fps,tzde electroscope

  A positive object touches a neutral electroscope, and thpwhkz(v vk- ugp 4f7e;8wl8a4e leaves separate. Then a- p7(v8zavhf lwe 8ugp;kk4w 4 negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated cbdc (2; d(b7pc7o8iw6ex lw gtable. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path fd7c( wpiglbbdc2 8cow( 7e6 x;ollowed 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 Coulomb con(*c858d dccwgy9az)0vq81jzc npzwg stant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distan(hi fjat+u 0x2ce d. The first charge is larger in magnitude than the second cha(+2xjf0ai tu hrge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nearoqafc+9 9 0h0jd,v ywh87cupy each other on an insulated wcpa8jyv uh99o0 fc,0 +qyd7h table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain forc166k3qsvv j aqe. If the charges on bothvvq16sqj a 6k3 objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces tzv 4 *u+2zkunof F on each other. If the charges are separated byu+z4k nvutz2* a distance of d/3, what are the new mutual forces?

  Two charged objects attract each z8 s4tn*688zse9 bkmbl g8e yoother with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, anzb8lmys*z tee8 8gbk69 8s4ond the separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What haczz pl p)vm egx*;82zpw88x,f ppens to the magnitude of the force on the proton if a second eelcz8mg,;vp8 *p)x 2xf8z wp zlectron is placed next to the first electron?

  An electron and a prot699yqjfwe; fbe qcu)y.lh:t(on are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next t 9e6u;lyhqfj9:we(y cf)qtb. o the proton?

  An electron and a proton are separated by a distan6z i3umwh3 v:t gwh12dce of 1.0 m. What happens to tih t26hvwmz1 g3:u3dw he size 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. When a second poin, /qil gy/v3dk4xib4lt charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force ofkivq4 /34l/,bl gyixd 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. h(n3poyv.t 7iWhen 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 i (nvph3 t.oi7ys 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 followi; g9aj4gfp 7 4*suqa os+3bztfng is not a vector?

  At twice the distance from a point charbk rg2wag4 q q3cz989tge, the strength of the electric field

  Is it possible to have a ze;fe90e /qejdfcf p) i4(k gko1ro electric field value between a negative and positive charge along the line joining the two chargese i 0g4cpk(19)j;qokfe ef fd/?

  Is it possible to have a zero elect.knljx nu:x xcrqd507*,o0zi ds2 lc /ric field value between two positive charges along the line jqj 7ccdu snxdlk, *xlixn/o.: z52r00 oining the two charges?

  Electric field lines ne 7jypzz73 wfb-gl/- qhar psitive point charges

  The electric field sh6fa8; l:rw lctown

  Can electric field lines intersect in free spa09/ggr wvyea1c j-/ eauc*sx 4ce?

  A solid block of meta3hr( tg s;s0fyl in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in ttfg(hysr0;3s he block's interior.

  If a solid metal sphere and a hollow meta*rt3m8 + geknardk ,-xl sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and tkanerm 38gk t, d+-rx*he surface is

  A cubic block of aluminum restu)7,)m4ku6l t akp6jhwr+k mr s on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concer+6 k64mlk) jkt,) ruuwham7r pning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electrisby tv-;6g;+ /hz 9cwbm f(7 wmmhlq1nc charge

  A positive point charge is enclosed in a hollow metallic sphof0 3ta7u;(xb6fie fbere that is grounded. As 0ubtfox aei(6ff37b; compared 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 stasp.l gi 30x2ypxs4 c5ctic equilibrium.

State Gauss's law.

  The charge carried by one electotrv+j 7ih4* 0lsuqy 3ron 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 n/zb mms7o 9 ;;ln)1w oee+fmfmany more protons than electronsmw+)nfb7;n 9 oze e1/f;momls does this piece of plastic have?

  What is the charge on 1 kg of n i78ta*s+ifl5.c ajmprotons?

  An atomic nucleus has a wo*(d y bkh,sjrb;t + ,le4i4rcharge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.piqv m7pkxu94u 3q a4+5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electrikpapu 49+7u4m vqq 3xic force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.bsjo ;.5v6mehn9/k4 yrm;k: fm)uq l sjl,ml *0 N. What is the magnitude of the secondro6mlu *j msnm4b;hv ;km5l l:.9,q )ejskf/y charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apbsvno7 k,;g (l2gdk*v art are they?

  The force between a 1wjr0.hvgbbx-6i;sh(: :dd o l)nk pu $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experie3w z t6xyf+(+*k kkobnnce a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is thew zfokxnt *6+b(+3 ykk electric force between them?

  Three identical point charges of 2.0:u ifhdxc0e3fwx2o 0rk.vw8; 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 and direction of the electrostatic force which :vxe.0o u;wff30wr d 8ichkx2 acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of . *i u: viaw/llkj,;ef+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 akfw;e:v, ilj*.il/ udirection of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: (ju)2rdcl)*d4 m.m wwk h+q e5pz2rfqcjt)u; 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 of tqmr wrj +u).de4zkpmh d)ltf5;2)(c wqj 2uc*he force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point ch4j*w rg ucdl: *z6brv7arge of -Q is placed at the upper-left corner. It is obsv ulc *7rw*64d zgb:rjerved 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 nC is at (0, 0.10 m); Q3 = 5.0 nC zbg;;r 9 stzu3is at (0, 0). What is the magnitude of the net force on the 5.0 nsuz ;btr9z;g 3C charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC ikx 8wxqs (6kfpehx ocn253xt/ k,d +l;s at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net fox ,wl txh32spcxox knf;qke5 +86k/(drce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilate ov 72,pdpcv5hral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one o, 27hdp5 vcpvof the charges?

  Consider point charges of +Q and +4Q, whic +ie7 *vnwoja5ckp9 l.h are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force a.j+k ein5p7vcw 9al o*cting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge ifw f2+a,n.4j frdkj;oi.c0ov s at x = 4.0 m. Where on the x-axis can a tvifo on4jra+dj w20.f; k,.cfhird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chargsx ff jc)(hc;9e -q is placed at x = 2a. Where can a third positive char9chxcj)sf;(f ge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g.al 9x+:lvqy :u 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 ipe2/03 kt zax8e:s-bjq* bv6 u2tsbkagainst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron-*as3ee0/b: st 2pb2 ix jkbu8 vqtkz6 is the proton?

  Two 0.20-g metal spheres are hung frgbmm5 f)pe y(*hq1o .yb,ixed.)m*doom a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrosty* .ofb1*d(d geqxo5h)i,m)by.mp m e atic 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. i5,f rt0yst ptln rg-u ,8zx1ka6/+bx What is the magnitude of the electric field at a distance of 1.0 m fro n r,5-tx/y0i1,uxz+agrb lt86tfkp sm the nucleus?

  What are the magnitude a,. np3z d:4es/ -ab8lex 2gobzrhdaf* nd direction of the electric field at a distance of 1.50 m from a 50.0-nC chaf -b: 84aoeb.dl xrdsh*,ag3/ zepz2nrge?

  A 5.0-C charge is 10 m from a small test charge. What is the magoarew7h ;31z anitude of the electric fielh; zae o13ar7wd at the location of the test charge?

  A 5.0-C charge is 10 m from a small tep: eku -lruhb; .bwt26oxr4s9st charge. What is the direction of the electric fie:2 bk9xru;6 -obrplu es4.whtld?

  A 5.0-C charge is 10 m from a fz 0a ceot0,e3f,t0 a9i/d hcssmall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of9t00/, ofts c ze3a0ecfh,ida the test charge?

  Two point charges each have a value of 3.0 C and are separate: 1,z.m bmmqyid by a distance of 4.0 m. What is the electric field at a point midway m.y m:mzbi,1 qbetween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick i8ge5j+;b gt8wn3 woq(wjc :zand a -4.0 mC charge is placed at the q 83gw;bc5wzjgo8(:iwne j+t50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is p e,tu* 7(t7j9*qbcdhyqm*j r3(rw4n4 lmyrpi laced at the 0 cm mark of a 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 elr(m(l4utpte b,4jn7wh *r*yq9 m d7yqji3 *crectric field zero?

  Two point charges of +3.0 mC*kevjl9 :4c6 c9kf6d1pjs wk l and -7.0 mC are placed at x = 0 and x = 0.20 m. What 6 9d:l16jc psf kk wkcl*4ej9vis the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squarek98mos4s+ qrn of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the centerskn4 m8q+ so9r of the square.

  Consider a square which is 1.0 m on a side. h45sr4p y5sem o i p97e/mfwv(Charges are placed 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 (0,4pe 97isfh5 r vmmw es/(5y4po 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 un y1 l9m8v8s+zzets.mviform electric field. What is the zmze.v 9s syml8v8t+1magnitude of this electric field?

  A particle with a charbyu x (9*opm/z(f mxm.ey*,hxp-j,juge 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 fieldg -/ /xapfalr: of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended?g a-:far/p/xl

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placz7t :p1bxv:5 unxy (pz* bwst7ed inside a uniform electric field, and is suspended against the forcet(ztuv7: x71sb:pbnx z5* wpy of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.y5hc6pk c20i *u -ddlx/uo xhsx-r/ 6w0 mC. What is the magnitude of the electric field 5.0 cm from the sphere'x6- /5 6-c/2 xpyirhd*oc swkuh0dl uxs surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wha qa;ov vkbo wd;6p,94yt is the electric field 6.0 cm w o96bv,d a;v;kpqoy4from the center of the sphere?