State the law of conservation ostv.t4:ai ,fkglck )1f electric charge.

  Is it possible for two negative charges to attract each +ndtp 95nmp df,1hiib0y qd9;other?

  Is it possible for a positive and a ne-x pa6;.dxnrw gative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the p1a nf1h.w s)uzrocess the glass rod acquires a positive charge and the uz1a.h s)n1wf silk

  A proton carries a

  The model of the atom sho6khd7 )epv b9qws a

  A neutral atom always hajq486 mvud (,yllo/ go u5 t*uvhjg7:os

  An atom has more electrons thah7r az0k9uyg4n protons. The atom is

  Materials in which the electr*p / jy0u;qgidons are bound very tightly to the nuclei are referred to *yqd jug0 /p;ias

  Materials in which the electrons are bound very loosely t8 6lgw.qsmj0q)vz* kvo the nuclei and can move abo )6qj8kq v *mzw.s0gvlut freely within the material are referred to as

  A negatively charged rod is brouxa7te y6.0nvxght near one end of an uncharged metal bar. The end of the metal bar farthest fro 7a.6vye t0nxxm the charged rod will be charged

  Sphere A carries a net positive charge, and sphg4 .pgf j,psb7l)dwj /n6mtaz1k-me)ere B is neutral. They are placed near each other on an insulated table. Sphere Bzmn fg1padmkt),76l4 w.jpeg/s- j)b is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivelynv cjc/jcs(u+8jdg-jg;at : )?

  An originally neutra *(b)uztgklwn +,ez1ri kpw 5lmd :4q,l electroscope is briefly touched with a positively charged glass rod. k15*,w m,lql zpg ztubkd+i(: 4w)rne The electroscope

  An originally neutral electroscope is grounded briefly while a cyi-12 fjlh)rfy j*seff +1; bpositively charged glass rod is held near it. After the glass rod is removed, t-fhjfcfbs12f ly ;e r 1yi*)+jhe electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Thenebdjs)hja:5:w l2g0 j a negative objechjbd :52js:a ) j0lwegt is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed ::v) p6rrymdo 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 forwapy v rd:6:m)rord, 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 Cou/ mjqkw2m msullz; y82k im:,:lomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge i17 qc/ ;d2 su u::yw-s0k8rwzcbk vefds larger in magnitude than the szk :7dw;v08-css1 ywdb2cuf r:qu/keecond charge.

  Sphere A carries a net f: pa3q9ghs 4qcharge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electro34 9fa:hgp qsqstatic force between them?

  Two charged objects attract each other with a certain fo nux/im0a5yl6rce. If the charges on both objects are doubled wm 5i xulayn0/6ith no change in separation, the force between them

  Two charges are separated by a dis4 o7ovr/-0kgqvv ;k4gk g8qxntance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the ne k/v44gxqv;vg8ngk-0k7qroo w mutual forces?

  Two charged objects attract each other with a forcel5i)x5tpr(tk( qpap4 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 topr xak(i(t 5t 5qpl)4p

  An electron and a proton are separated as moz y,56ayoa660sqk(kj:*r*vi q hby a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first el k *y*saao sqij: ovkr 0zq6y6a56(,hmectron?

  An electron and a proton are separated by a distance of 1.0 m. W/dwqykl3y e96hat happens to the y93/lk6dy wq emagnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separc1jos- yfw n96y54pjkk a6bn7ated 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 to thfjp4 - yon 6w1s76n5yacjk9k be proton?

  A point charge of +Q is placed at the center of sf4ppd0 y/d ho-rtp7 )a 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 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 theh t)yd-7sdrf p4p0p/o square?

  A point charge of +Q is placed at the centroid of an eqb71ly *s :0iczp.xhh; yk pe4guilateral triangle. When a second charge of +Q is placed at one of the triangi ycg 0y;*p:7kb zel xh4s1ph.le'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 -4gypfr/ qebu at94*gis not a vector?

  At twice the distance from a point charge, the strength of the electaq5hc )bbn9j rv7 51umric field

  Is it possible to have a zero9wkbl1 6 hyyn;tl .mb2 electric field value between a negative and positive charge along the line jln btl1y.; 62bk 9wmhyoining the two charges?

  Is it possible to have a zero electric field value between tqr(mfku d5i) 0wo positive charges along the l5drk()u 0qifmine joining the two charges?

  Electric field lines near psitive point uc oessw2qc3el85 ,p 0f7bes/charges

  The electric field showngdd) gn*vd4/ y

  Can electric field lines intersect in fre/:x4a sozf2np l 8ix5inzq4s) e space?

  A solid block of metal in electrostatic equ/s 42zo8ph waeilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's za28so/p4 we hinterior.

  If a solid metal sphere and a hollow metal sphere voa8p0dt,kw,cgvdgt 0a ;u3hy)a2/ e of equal diameters are each given the same c )c80k;todvat /e y2,p0gv,dwghau3a harge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform 6v1:,y hmplkw0w 9zmdelectric field is directed straight upward. What can be sai1k:m0mdw plyh 9,wzv6 d concerning the charge on the block's top surface?

  If a conductor is in eleiz1be +2.r,rnn )vwotmqmz: 3abh8d* iv j/;dctrostatic equilibrium near an electric charge

  A positive point charge is enclosed inv;p*gw / 4q 9n;pyqkri a hollow metallic sphere that is grounded. As compared to the case witho/pq;4q;gwrpkv yni9 * ut the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equibk* 4n.rk1y7kmm nhs7brv e .7l8wz5ylibrium.

State Gauss's law.

  The charge carried by on5i u vupr7rbp,, ;tqiknw *w*6e electron 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)+4cn:z ztf yc than electrons does this piece of plcnf+y):4cz z tastic have?

  What is the charge on qnhfh.+e ts*d ,4u0ho1 kg of protons?

  An atomic nucleus hasmzko.3ep)kuolp: c ;ka 5e3 4h a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sezq*.yt i( kg (kghw7r8parated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the elecwi8k*7q h.(gyz rg( tktric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between thaj;rod:s2x a2s g-iy1 em is 1.0 N. What is the magnitude of the secongs ir-sy1aad 22jo;:xd charge?

  Two 1.0-C charges have a force mu .d,xyn;f04hr eum9between them of 1.0 N. How far apart are they?

  The force between a (uu.:i vo 3p gyg7j9ds$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm ap u:; .w1wn;:-r jmbaepahu1o yart, experience a 1.0-N force. If they are moved to a new separationme; jh:1u1-r.naop y; bwwa :u of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2 (ymtt,( kse8b.0 mC are placed on the x-axis. The first charge is tbks8( me,ty(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 acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 m 7 j0xj(rmf,cyy7+iq.ue* bxyC 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 direction of the electrostatic force which acts on the r fyx +ibcjx ym7 e0,(qyu.7*jcharge at the origin?

  Three point charges are located at the foid; 4j .ijx:oadv.t u*llowing positions: 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 ijj;d*txo :. iauv 4id.s the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a se)j6 de7c +rjp.zzw. ylcond point charge of -Q is placed at the upper-left corner. It is observed that an electros+.we.j)6 dzlpz c7rjytatic 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 is6qfq)kp-bi8 )eob1a c at (0, 0). What is the magnitude of the net force on the 5.0 nCc ia)1q)pbf-8ke6qo b charge?

  Q1 = 6.0 nC is at (0.30 m, 49r2v9*sn gu:ylwmp h 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 net force on the w*9g sr2h 4ny: 9vpmlu5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral thp*38xzx*yx a riangle which measures 30yzp axxh3x**8 cm on 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,( zpt4c+ h16 wjplz8nf 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 of -Q such that the electro(z 4jn6 lphc18 wzpf+tstatic 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 fu3blk,m- flc3yg9xf6wj22 k = 4.0 m. Where on the x-axis can a third charge be placed so the net force on itk f2 x92b-cgfwfmly l3j3,6ku is zero?

  Charge +2q is placed at the origin and charge -q is placedpgq,qk709oc n jn( w8c1)lzrb at x = 2a. Where can a third positive charge +q be placed so wnq rl)7goc89 (j,q0bck1 zn pthat the force on it is zero?

  A copper penny has a mass ua s,o- b;7gi-c ih:ene4p 4jlof 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 attracnhi;t/6-,2mr a5pl ;hv,h1q agwfcection of a fixed proton some distance above it. How far above the electron is the prophwavc,1fe5rg ;i2,mh/aq c t;-6l hnton?

  Two 0.20-g metal spheres are huzm-y+3xm.sb)ocwp(qz q; ey*ng from a common point by nonconducting threads which are 30 cm long. Both are giz.;cqxwm s ()y o3 +b*mpe-yzqven 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 r/v6x 8sj+i qc,,yimris the magnitude of the electric field at a distance of 1.0 m from tvr6s rx8y,,m cji+q /ihe nucleus?

  What are the magnitude and dirb* +vpi/,k ideection of the electric field at a distance of 1.50 m from a 5+ipk,* bide/v0.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude vqs8id -e7kcygk7 /v,bsjk 6*of the electric field at the location of the test charge?,dv kkesci7yvg8s/ 7jkbq *-6

  A 5.0-C charge is 10 m from a small test charge. What is th z+3 a8epqngs02j;koot24w th e direction of the electric fieo24tp3kno 8qg;2s0 zhwte +ja ld?

  A 5.0-C charge is 10 m from a small test charge. What is the m(nrwbscmbcne7 61ia6i6wr0n j-6f4 sagnitude of the force experienced by a 1.0 nC chsbc6(m i -e wifj14wnsc6n b066rran7arge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a didv,u)w gv3/h3 u x5rhustance of 4.0 m. What is the electric field at a point midway between the two chargr v uw/3 5xg),hhdu3uves?

  A 5.0-mC charge is placed at the 0 cm mark of a me:6spdjw h:uw bb hk8htj 6yy. +rb4:p-ter stick and a -4.0 mC charge is placed at the 50 cm mark. Wha4:tkrhh wb:yd+y.bub:6-6s pjh 8wjp t is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at v1g 6hus83 us 8btipa:8x4j) 2wgdlhd the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm 8xw3:pglhddvauhu g 64t 82ijs8s)b 1 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 x = 0.20 m. Wh aj-:x1mvzyg:df 6x8j at is the magnitude of the a j1fyjzm6x:v8 x-g :delectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The la8z 9-35fsz0qng,jl8 wpkzlw.9q u ucast corner is ocplzc 9gs0,83 .w8lk- j9 qznazw5ufuq cupied 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 plach fg+fe.h g;)u( z8b94h.;c hk ftblpwed 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 magnitudeu .fh48 g ekchb);zgtl.p fw;(b+h9hf 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 ic9g h-du77ge2h:i ykin a uniform electric fielh-gkidyg2ce:iuh7 79 d. What is the magnitude of this electric field?

  A particle with a charge of 4.s:yadhq2* zc5tm .25o ttsr;q0 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 u/xg9gki0ykc(h*uw sn4 w64s an electric field of 6000 N/C pointing downward. What charge must be p9wn4xg6hi g*uwy4s k/ 0sck(u laced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge ofgh9+46 ne4j:mbpk t fk5bl.enm:db* s -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 oflnkk+hbm9mbp5.6*gn e4t :d:b 4 efsj the electric field?

  A metal sphere of radius 10 cm carrt+3g(8xwa/ d(yw. p8taah ub d: *abrheuo7c6ies a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm fcb *8u(rb(6gth ewa.ap yd/8a +uo 7:awdtx3h rom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge ofuh- ntwh66eeqj np- feo,s(;8 3.0 mC. What is the electric field 6.0 cm fromeh t-nojw 8 p6(s-uhf;,6en qe the center of the sphere?