State the law of conservatxxum.7dhg 86gion of electric charge.

  Is it possible for two negative charges to attl4s 4jjrpa7+( xj:ev ; etds1vract each other?

  Is it possible for a positive and a negative charge to attract eachuujqj ;6ih6b7u 1k;rp other?

  A glass rod is rubbed with a piece of silk. During the process the ppai/zzh/5)b6t /+go/oqy i mglass rod acquiresz6o t+)iiy/z g/ mah/pq/obp 5 a positive charge and the silk

  A proton carries a

  The model of the atom jc1y rc2:rghgtst1dm5;x+1 1c g+ xdtshows a

  A neutral atom always9)b fur)d7l y)lmsg+b2 omda5 has

  An atom has more electrongk2 b3u92eh5saqk5y n s than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuc wk4m:mv whd0n w1yg:4lei are referr:4m4:gyww nm1kwh 0vded to as

  Materials in which the electrons sy(o ;) tsszkrz7s5w-are bound very loosely to the nuclei and can move about freely within the material are referred to(s-); zwztss k y5osr7 as

  A negatively charged rod is brought near one end of anl3s v v:qe 3m2vccaaq5,e1rl. uncharged metal bar. The cv,:lma1 5aq 3qrcev ls.e 2v3end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They a ,ipx i,b6biq5re placed near each other on an insulxbbipi i,q ,65ated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivelc i35c / iz9n1jcbu3fkxb8neu+8,rcm y?

  An originally neutral el)e,gwfib1 5vtectroscope is briefly touched with a positively charged g,efwti)bg5 v1lass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively d j 1dwwdkeg38mh4-r 2yf4c,wcharged glass rod is held near it. After the glass rod is removdhce3gd 4 ,k41r wdww-2jmyf8ed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sep:ai*,g nia+*qxhm zb 4fbz/,larate. Then a n *maxz4i:h/qg i,+ bz,l*b afnegative 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 kwbpv 4x.9 jomm.9o0vtable. A neutral metallic ball rolls straight toward the object, b4jxk9 .v.pbomm9vo w0ut 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 touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of thyb/ c;m ryms :1a c)+w)p9takwe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d.qcf)ycz,+a .xx6 kp.x 3m9auf The first charge is larger ifkca+y fxzu3 .m69 )x,x.pq acn magnitude than the second charge.

  Sphere A carries a net charge and sphere B is -2 c;p+n vf5td1flc nhneutral. They are placed near each other on an insulated table. Which statement best describes the electrosta;1nclnfhp5 ct-2 v +dftic force between them?

  Two charged objects at0xb 1pvtq leu 2re5l)7tract each other with a certain force. If the charges on both objects are double0r) vpb1luq lxete7 52d with no change in separation, the force between them

  Two charges are separated by a distance d and exert 8pjduz/ 9cevkbi8 a -1mutual attractive forces of F on each othe1u8jk id/cze8b-ap9 vr. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forcey1vhwlzt1yc+ 2)m 0z9kas *cb 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 valwzcty2sb) k1avl0 +m yh9zc*1ue? The force is now equal to

  An electron and a proton are separated by a y bl9 x rb *e8pp+1dxonht4.8wdistance of 1.0 m. What happens to the magnitude of the force on the proton if a second el+ex4.bpbyd*ph xn 19 wr8 tol8ectron is placed next to the first electron?

  An electron and a proton are separated by a distanc0z z f-1pens5ee of 1.0 m. What happens to the magnz01s p-5zfeenitude of the 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 m. What had-v 0p/+5z gczy+ks kdppens to the size of the forc+ p cg/szd-vz05k+y dke on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center2n0a6jhx ewx 9 +2jkfb of 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 of0jx+e2af2n hwkb9j 6x 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.p9gc, 3hae rwk9t+*ve When a second charge of +Q is placed at one of therew 9k*9 h,g+ tpvca3e 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 one of the other vertices?

  Which of the following is not ,oizn2y ;jp 1wmjowta,8wa24d.y ma*a vector?

  At twice the distance from a point charge, the strength of the electric field oe)p0mn0-kjs-me6, wdtg 6ff

  Is it possible to have a zero elr-p 2pjti. uhgv;o3.dectric field value between a negative and positive charge along jvu.h rtd3pg; o-.p2 ithe line joining the two charges?

  Is it possible to have a zero electric field value between two positive chargefx/*+m2 nr8(5zberx k 0blirss along the line jm5frr0bx i*(82/ x+nsk er bzloining the two charges?

  Electric field lines near psitive poin r jtkw2 1ob7cs5cn7oxbxi.-3t charges

  The electric field showm9ei9e dac21ozer78xa3 4 /k taysy)rn

  Can electric field lines intersect in fik: k3 ;w m p7vabbmc wal:z07+3o(nznree space?

  A solid block of metal in electrostatic equilibrium is placed in ci,2im b lu *5:5xv;ghv8msgha uniform electric fielmi l xch h,*:mi25vsugv5;bg8 d. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal spnawk/ .u1 r u4io8xh6zhere of equal diameters are each given the same charge, the electric field ixn/1ka4uuz8o.h 6rw(E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wherb4 tdfsv9kxh *j9e0 +ke a uniform electric field is directed straight upward. What can be said concernk+ 4hjs9bkve*tx0 9dfing the charge on the block's top surface?

  If a conductor is in electrostati i.*puwp6:bzmc equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grounded9(r6nl 0 qvzpe8 he,bs. As compared to the case without the hollow sphere, the e09,l(b6r8qen zeshpv lectric field at a point directly above the hollow sphere has

State three properties of conductp5f/z q,9;+gdim 6 eh7cuvakrors in static equilibrium.

State Gauss's law.

  The charge carried by one electro9m(va8if wb 6sn 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 xy.rr)/iliovey*4 hl60s cf-of +2.00 mC. How many more protons than electroi*ylh x40.l6r) -vc fo/irse yns does this piece of plastic have?

  What is the charge on 1 kg of l,2ih.y1q sjpprotons?

  An atomic nucleus has a cha4na bjhvo-4 ol pp6-(mrge 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 ofv5ph 0jr7)fd/cg9,fid l,qm a 2.0 and -4.0 mC, respectively. What is the magnitude of t/9dr,hf7q)j ip5dgclav 0fm ,he electric force between them?

  A 1.0-C charge is 15 m from a second charge, and t4vjck1ngwd;z5t+2se -y m - zmhe force between them is 1.0 N. What is the magnw1jz- yvm 2kd5n esm-ctz 4;g+itude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apr - cqz6t2gq d+p3s464mcugvz s-o/q rart are they?

  The force between a t-7t t qb,ymjh9)g:t:4 gwsq7 aaufky:pn4/ v$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience agc(oeinu0xg/ yigj og0hs-* -, *0 lsg 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric fecsoy( u*0,0/*glggg oix -gh - jisn0orce between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chax b+;r/hsu,5 ;cdro/(u fdmqn 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 5ubmqddx; h/urors ,/;+fn(c and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A cmm tm9aqunkjeye+k2 37 a. 4jnw.hc v)7xm -.rharge of +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 direction of the electrostatic force which acts on the charge at the origin?m.xe 7jhvmtk9 jr) .y3u +aae2qm-7wm.4knnc

  Three point charges are located at the following positions: Q1 = 2.00 mC at xc8kas 7lyp7,;7a ;ba cqmn,gx = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x sga,, m 7q;7a klpcybcn a;8x7= -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 a square, and a second point chrw9r*d/x xkvi1 kgr0*og 0-uxarge 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 magnixird g/kv*1xrg*9k-uo 00 wrxtude 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 r8/n (v0j )lyzkd9wo q= 5.0 nC is at (0, 0). What is the magnitude of the net 9)rz8vqw/ljko y(n d0 force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.1)tmo ls; nu038ygrr c20 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC chut0r rmc;y8)3o2gl sn arge?

  Three identical charges of 3.0 mC are placed at the vertices of an eqk08h9ty s,9nq9zy z;scje9an uilateral triangle which mea9s ,zy q9;a8tj sk09ec9zynh nsures 30 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, which are separated by 3.0 m. At 0x7urnevi v-q6 0fo2o what point, on a line between the tfqrin vu70e26ov -0oxwo 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 chawr6p4nby9y j)s4 xl0mrge is at x = 4.0 m. Where on the x-axis can a third charg4bs y l)pn90 mxwyjr46e be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chargeif9 ;h(e1(eqaldno:mx xb5 4ut )s+idde i ;(j -q is placed at x = 2a. Where can a third positive charge +q be placed so thatsix;1db(u ihi()e fnl45tda;mxo(9e :e dq+j the force on it is zero?

  A copper penny has a txe6u or 8cvoj os50 m9wa,x+ye ka:*5mass 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 0cjks.l rb :8pof gravity by the attraction of a fixed proton some distance above it. How far above the pc b0l8:r.kjs electron is the proton?

  Two 0.20-g metal spheres are hung from a common point b;.kb ewtog86 xy nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces th.;8 beo kxgw6tem 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. Wh g07i,-1i3xsv- rmoxkxgd; bq at is the magnitude of the electric field at a distance of 1.0 m fro; gdiq-ivr,x0k -mxgb7oxs31 m the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.pl6bby 3 :r0g:me-huddyp/w5t hvb ,450 m from a 50.0-nC chbdu30tm-: 4ypb:yvbh5d,wgp6hl/ r earge?

  A 5.0-C charge is 10 m from a smalni2)cl8ruo8wb c s 9:u.2prn ql test charge. What is the magnitude of the electric field at the locancrn82w:c orq8lp) u b.2 9isution of the test charge?

  A 5.0-C charge is 10 m fiq146r:fh h xe:g tc8from a small test charge. What is the direction of the electri16t:cfr hghx:fq 48i ec field?

  A 5.0-C charge is 10 m5t 1r3lw;qy v3n9a* 5-:gmos v gnqzsc from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the teszq:3o5 mystr3vvg; sg*w-c n5 n91 lqat charge?

  Two point charges each ha+l7q+tol g2ztke3 k lok;b y8.ve a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway betweql 3tbl;gk loeko82 +y+ 7t.kzen the two charges?

  A 5.0-mC charge is placed at the f)zv .slfv0o8l58ftcii*d.:x + tvq l0rt:yw0 cm mark of 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 marv5iif*vz .llq8 odftf0: lr0vw+x: .t)8cs ytk?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick a tt0g ,x.ufrgf,wx :- ihencd8 w+,k,znd a -4.0 mC charge is placed a, iuffwckx +hr.gt ,n8z0wg,etx-d,:t 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 x = )0td*brjo7hii 1z5diwk5 i+6m la1jo w m,m7m 0.20 m. What is the magnitude of the electrmalk 7w h5w m5r+,io1 )jzb1i 7mmtiid06*jdoic field at the point midway between them?

  Three 3.0 mC charges are at the three corh+i0heyibw n)q tcup;-2 4*kjners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC cha p0whunck*yj)+ tq- eib4i2 ;hrge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corn :jcnw+n74ma7or1 p(.u bxtbsers 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 at the squa4( ms n:w7 tuabx pbn.o+cr1j7re's center?

  A force of 10 N acts on a charge of 5.0 mC whenjx dpid-1qe6 7 it is placed in a uniform electric field.1xdei qj-67p d What is the magnitude of this electric field?

  A particle with a charge of 4pp1l.83khvxsf id g ; . icy ct3lmy.vy:o8n.9.0 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 field of 6000 N/fen w4s7:4u-8s loyph C pointing downward. W-4wysn8 lfo4up s :7ehhat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chaifco,:s/yg1d 4 z.m jwrge of -2.00 nC. The ball is placed inside a uniform electric field, and is:df/w ,1. izc4jsgmo y suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What j2l 4knxj4r.nis the magnitude of the electric fiel.4 xn2jrnk4j ld 5.0 cm from the sphere's surface?

  A metal sphere of radius z3 fpq 9mr)pj7fq8.pi2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the c.pzjf)9q rfp 7 pmiq83enter of the sphere?