State the law of conservaw) :a7dcg-nzetion of electric charge.

  Is it possible for two negative charges to attraawtqe 7e)*caa83.zl l ct each other?

  Is it possible for a positive gif wef4q;c,6 and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process t86n;a kuoesmxa+ v +b7p)o:lrhe glass rod acquires a positive chargeask:bma r8)v;xp 6nueo7+o l+ and the silk

  A proton carries a

  The model of the atom shows :* h hn8qcbv*ya

  A neutral atom always k8:dr3jfk7mt has

  An atom has more electrons than protons. The at9z7jj (6f bkxormxsc7k/m74 yom is

  Materials in which the electrons are bound verfhm66vupwl my5++e 2bqm,a: l5 qhupl,3thw 9y tightly to the nuclei are referrp a36+,l5hv2 flum,m 6mytu qbw59hqleh+w :p ed to as

  Materials in which the electrons are bound very loosely to th ln7ku7u p:nzc).c,ex nazv ,6e nuclei and can move about freely within thz,v ae76kxu7nznu,lp :) . cnce material are referred to as

  A negatively charged rod is brought near one end of an unzh,hgb 7yx4wp 5e ;on ss7a:5js1pv;jcharged metal bar. The end of the metal bar farthest from the charged rod will be chhph,1x yv77 je ;awz s5o:ssn;jgp54barged

  Sphere A carries a net pom8-+s3r 3t6szsn s6uuyyp br;sitive charge, and sphere B is neutral. They are placed n 6 nsmu rp3bsu+ysy83st r-z6;ear each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged ro, 2 60rv.r,u kbfnmx4 vqxk,mid charge an electroscope positively?

  An originally neutral7 drin 5eg5ca::dg8 u2nchz te*c*c3e electroscope is briefly touched with a positively charged glass rodu8 3*e da5 re2g*tcngc h e5zcni:7c:d. The electroscope

  An originally neutral electroscope is grou.f4-nl; ca2gzo u ,awvnded briefly while a positively charged glass rodn2c ;, 4zguafl-o.wva is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscop.-)zz j1 h c .mkzkzzogz5v:0we, and the leaves separate. Then a negative object is brought near the electroscope, bukwkhzzc z z01:.gm)-5 zjz o.vt does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulaan1o a,sw6u dyx42(zxted table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic snuyao6w4,2( 1 z xdaxball 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 the Coulomb constant -vksbgmv08hj ):6 rm k$k$, which appears in Coulomb's law?

  Two charged objects are separaterqh w9wz8:iz -d by a distance d. The first charge is larger i-q z8:whi9zr wn magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. x0f (cwum(am 8exw.qn*i.f(7b2 yz qaThey are placed near each other on an insulated tab( wf(n8wzqf.0u.amxi 7 2qb(* yxceamle. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a cert;9.mhc/yofm c ain force. If the charges on both objects are doubled with no change in separation, the force b/f m. 9;cycomhetween them

  Two charges are separated by a distance d and exert mutual attractive k r)k 9vbte69xforces of F on eat)99rv 6exkbkch other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other wi tc;p g030llflth a force F. What happens to the force between them if one charge is doubled, the other chac;f lg0tll 3p0rge is tripled, and 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 separatt yojxo7 h*2j*bg0s0c ed by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is togc 0jo*x*2 y0jbh7s placed next to the first electron?

  An electron and a proton are separated bye(4rk)ptx6 op a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a4erop x(k6)pt second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happ.ud68 top9jd nens to the size of the force on the d. 9utd68onjp proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is pl3sm 8 drm 8(mhl;b7qidaced at the center of a square. When a second point charge of -Q is placed at one of the square's corners, mmq(li87sb3h;d8dmr 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 the square?

  A point charge of +Q ii px/wdydd( o/fbk;77s placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's ver dy/dofb(pi/ k;7 dwx7tices, 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 notce( .kytx-:. lx3blaa a vector?

  At twice the distance from a point uph 8c7ij/i/f charge, the strength of the electric field

  Is it possible to have s*by),ij++ 5 mu 0ecfroym2 w1ssl,) accnh,wa zero electric field value between a negative and positive c mbsf0 o5wc,e,s * ia)s y chl2,++rymjuwc)1nharge along the line joining the two charges?

  Is it possible to have a zero electric field val i4yxa2hp;h z.6 qibj3ue between two positive charges along the line joining the two charq36hzij4.x;pa i 2yh bges?

  Electric field lines near psitive poins,dy6mo am5i7 t charges

  The electric field shown o0j ,s t-kkxr)1l-j xt

  Can electric field linh*foa(zsd 4ml8y4y z1.n5grj6dewu )es intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uni0tqxptsv7991qhm g 2tg9g: scj4 bgy 3form electric field. Give a statement concerning the electric field gh:0 9q9gjym q spggx tv7t29s3bct41in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters a4ozf. z12s) w su2axuere each given the same charge, the electric field (E) midway betxs ueow z.f4s)2z1au2 ween the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region eatw))aop9:*b6b sn ; zcmy(lwhere a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surf e;*)n :oaytp9czawbb )6 lm(sace?

  If a conductor is in electrostatic equilibrium near an ele0l lhe lrg.l 5*x3fc+(9b qklvctric charge

  A positive point charge is e:vam3 d p-o59 (fi1zdae k*btenclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hol(pe*d ak539 mfa- z t1iobev:dlow sphere has

State three properties of conductors in static equilibriummpixj1 h9 +)z/5u+hj9rv vxoe.

State Gauss's law.

  The charge carried bpq v1gxd77.sl 5h:jlidr 3 *gly one 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 mbhgdq 4dd l850*kb cuv.0rn(h- cwo:hore protons than electron 0rkdbdohc5 q-uw :*hlgc b 8v(n.4dh0s does this piece of plastic have?

  What is the charge on 1 kg omo+t -o22 ,rtk7es pcqf protons?

  An atomic nucleus hashfu-1g :rj( vi a charge 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, h +y:wo*wb yev /*akb9vave charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electoy/w k+ybew bv9a: *v*ric force between them?

  A 1.0-C charge is 15 m from a second charge, and thed 5shxt gv0z8 n7*gk*h force between them is 1.0 N. What is the magnizd0t 7gv5ng*x *sh 8khtude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?.os, .;7kbumrf 5 wwvw

  The force between a a/donio :4xet;js3o 4$30 \; mC$ 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 theyi dy8ls xcay-:.sy )d9 are moved to a new separation of 8.0 cm, what is the electric forces yy)id-xl 9c.d8 ays: between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. qw97bytmr;m:6e+ y kdThe first charge is at the origin, the second to the right adb7k qmt ry;yw9+:6m et 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/ he. rl;qdp9b. A charge 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 fo9/h rbeqdl. ;prce which acts on the charge at the origin?

  Three point charges are located at the e dpf; kk9mmoy:q43k.following 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 is the magnitude o k;3k qm:e.m9 odpy4fkf the force on the 3.00-mC charge?

  A point charge of +Q is placed at the cb dk1n z,ptd6c/d 0i;nenter of a 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 thet0d/,z ik bdn;n6p dc1 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 is soo 0 7wa1qsw:bj7x9 c4n q(oxat (0, 0). What is the magnitude oo97a0(1s4 xs j x7oq:nqcw wobf the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 bw oti+xxlk+5 mk t+o*)z6vt*= -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 5.0 nC cmz5+)kot t w*ko6+lbit+ x*vxharge?

  Three identical charges of 3.0 mC are placed at the hesguigj 8p 9 3fhe)+6v2s 5mmvertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which ahfh )j9em 53is8+2m uepsgv 6gcts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated n:ik t4ojzq3 kdw5j7,nbj287vdbb ,iby 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 acting on it would be zero?jz jn2k :nbqbdi4 ,b3t8oid7 v wkj,57

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4sr)n.n7 7dw ox.0 m. Where on the x-axis can a third chd n7sxo )nw7.rarge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = tbv p b2fohv*e; 2;fh02a. Where can a third positive charge +q be placed so tha vfb*boetf2v h0h 2p;;t the force on it is zero?

  A copper penny has a mass- obqibpzfus;n -y(1 2 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 z(3nd- rljqb.qtr 4 kxngtr48*.(tf s by the attraction of a fixed proton some distance above it.3n4(- .tfql*. ztjxrr(stkbqn8 rdg 4 How far above the electron is the proton?

  Two 0.20-g metal spheres are hung frof 3s2*nydn n0nm a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until thn n3s*02ydf nne angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has awdy) tj,ltnzgt2k5 ,8 charge of +40e. What is the magnitude of the electric field at a distance okty 8)ltzgn,tjd 2 w,5f 1.0 m from the nucleus?

  What are the magnitude and direction ofwi 8 g-(6 nthaewk*sbznt8 lk: 6;- a5lqhy8no the electric field at a distance of 1.50 m from a 50.88-ks n:holqanai( zw h k-65wn gye8btl*;6t0-nC charge?

  A 5.0-C charge is 10 m from a s.i 1wwp xij7xe o5eu-+mall test charge. What is the magnitude of the electric field at the locat+w 75iei-xpjoweu. 1 xion of the test charge?

  A 5.0-C charge is 10 m from a small test chr xm-yc* kk05- mlskd:arge. What is the direction of the electric field?c:lkmrd-0s -x *m y5kk

  A 5.0-C charge is 10 m from a small test charge. What issq-m c-agkh5sg1 /bfnj6jzxg+e )c(2z4q x n( the magnitude of the force experienced by a 1.0 nC charge placed at the location of tf jz qc-2(mgn 4q)a-n(c gkszxe b+/1x6gj5hs he test charge?

  Two point charges each have a valt*/:0(q;p zgyf-ep pyzxex - tue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between th /e pp-;qzpyz-( g0ft*xx:t eye two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a owgb**x3b hlg; 1h jf4-4.0 mC charge is placed at the 50 cm mark. What is the electric field a*fb hl1gw3xgojh* b4;t the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm markxe;-k0 s)5qj b6cl gm,egc ho1 of a meter stick and a -4.0 mC charge is placed loeh0jgq,)xec -smk56bg1; cat 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 placedx dzu, f*8cv50bi5n srfm(t- d at x = 0 and x = 0.20 m. What is the magnitude of the ebfvzd d f5stu 8-5xrm(i* c0,nlectric field at the point midway between them?

  Three 3.0 mC charges arezcact.lgc 58( at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric f8cc5a(g.tl cz ield at the center of the square.

  Consider a square which is 1.0 m on a side. Chargestx 5(nkji ) 8+dib4dhhhgob (; are placed at the corners of( g+hh jbi8)5 d;4(nhob xdkti 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 square's center?

  A force of 10 N acts on a ch1eidyqi p e b0 78flbl.ld98- s*uro-barge of 5.0 mC when it is placed in a uniform electric fio01slf 9l.8br*p 8--del be uyiqd7ibeld. What is the magnitude of this electric field?

  A particle with a chargehqo,zj j z/bc-v2; zffn.*-uu 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 isbjrf;q 0d;iulxc/ ( ,a placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for i0(/ lu;jcda, x qfr;ibt to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball izu3eptjh5,j6-5tz3t n j )eeje/v4z os placed inside a uniform electric field, and is suspended against tzzz 4-o6vj)n j35jehpt/je,t53 uteehe 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 is the magni(l+(cnfsr3:x3jel02f r7vt5 w w lzlrtude of the electric field 5.0 cm from the sphere's sutfrxl lwrln5z:7(fc+w2lej( rv s33 0rface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0id-+ 5 ct9 lyyti6o6bs.aq km(os:ci2 mC. What is the electric field 6.0 cm from the cent6mts+i -o 9c56 iaq.sdytc2l(ok:ibyer of the sphere?