State the law of consouthi8d76aa) vm,lr( ervation of electric charge.

  Is it possible for two negative chara :e61d of(hljges to attract each other?

  Is it possible for a positive and a negaw s37x)cor*svv;/kj chy)9jl jkzu0* tive charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod naa6)h f/7zbsoqihjcqgq ym)w*0 7(ex .g(7 tacquires a p7(0xzefq m)q.g6 s/)o(njhb7y7 *tc qahg a iwositive charge and the silk

  A proton carries a

  The model of the atomc/dzc) vx/ 0rn shows a

  A neutral atom always hasd3 tys;e4omte .yp)s:

  An atom has more electrons than protons. The atom po(54 0 bp5veivm ovn*is

  Materials in which the lf;k8h 8aknqsqfl:5g* c j+g7electrons are bound very tightly to the nuclei are referred to a q5gaf +:8f;ncqkk7 8g l*jhlss

  Materials in which the electrons are bound very loosely to the nuclei and can mee8gtu6cxg7,fk9z7 r of tuecggz7k8,r x967e ve about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Teiqe.jad3 (3lm .vm.6r fi +ghhe end of the metal baq.j+mfh 3ld .me.a eirv6i(3gr farthest from the charged rod will be charged

  Sphere A carries a net positive charge,sp 5btg7+4mfgc /d, ,f tsnsm0 and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire tha7b m0g cpng,4st fs/5st+,fd mt is grounded. Which statement is correct?

  How can a negatively chargedi 8 oxx(a)u+om rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a ki5ibnd c4m*2positively charged glass rod. c4 iib d25k*mnThe electroscope

  An originally neutraaxryws- k.bk86w w 1.-bwrga*l electroscope is grounded briefly while a positively charged glass rodk.agw6bsrwrb*aw-xkwy.1 8- is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the legf -g6 5v,ivmgaves separate. Then a negative g im-vvg6fg, 5object 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 table gihlow377 i zup*.bf7. 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 forward, but does not touch the negative object. At no time does euz hlwg*i.7o7 pf37bi ither ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constjbu ntu7m)q 6lg78u/dz;8t npant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The kf(2rlpm8l v9 :y j7epfirst charge is larger in magnitude than the second cvml8k:f(y9p2ej lp7r harge.

  Sphere A carries a net cj:ah9-3p l3ao4ni /buc;ejw fharge and sphere B is neutral. They are placed near each other on an insulated tpf3ba9w3u- nlc oea;/i:4jj hable. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If t0 -u .be.akm tlu5wn1bhe charges on both objects are doubled withlkem1b5nua-. u0 tw.b no change in separation, the force between them

  Two charges are separated by a distance d and exert mucljdif/b0*v.md wq5 8tual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?dmlj0wd 5 cv.*i /bq8f

  Two charged objects attract each other with a forcej9cb -o,q6hq u F. What happens to the force between them if one charge is doubled, the other charge is tripled,bq j,h qo6u9c- 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 separated by a d/c7m)gl5 foq1qgvpn/istance of 1.0 m. What happens to the magnitude of the force on the proton if a second elec7qcg5p/ / g 1nlm)qvfotron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1sy854u(, nia w xrahc*.0 m. What happens to the magnitude of the force on the first electron if a second erw5xhnuy (a4 8scia *,lectron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0x3od-4(b8-wmekajpz vk73 dt m. What happens to the size of the 4 otb3kzk3w (e- d7px mj8d-avforce 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 pik2 v9n0 qzz+goint charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0 N vg0q+zink29z 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 atnn a/o 6.4qbhv+w3c6sv3 uied, zmk ;t the centroid of an equilateral triangle. When 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 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 vertso64 3v/kh ,3t;niqumnwd v 6cz+a be.ices?

  Which of the following is not a vec:4 7+szcvca ostor?

  At twice the distance from a point charge, the strength of the electric fiu y bi)0/o:ljveld

  Is it possible to have a zero electric fiel e2 io;/q5 vvbevs-u-ed value between a negative and positive charge along the line joining the two chargqobvui/-2- ee evvs; 5es?

  Is it possible to have a iz /x,b+;r3wr*+ cxf+d zxbfc zero electric field value between two positive charges along the line joining the two charges?b+,dcirc3 x x+f;rbz* wf/+zx

  Electric field lines near psitive point cha3p 10x1qaw8 clki mug4rges

  The electric field sxawo r+-+1 x7sj 8dei/v8dhe qhown

  Can electric field lines intersect ij yn.qpj4c0p ,h/tq 3tn free space?

  A solid block of meta g1kfh)dbtb;/l in electrostatic equilibrium is placed in a uniform electric field. Givehk b dbg1t/f); a statement concerning the electric field in the block's interior.

  If a solid metal sphere an4n49q6 k,oao s*yf4i6jh snzlp/gt m *0o a1pqd a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway betweospos, o mnpf6k1qg*i4 q 9j*4lynz04/ta 6 haen the center and the surface is

  A cubic block of aluminum rests on a wooden table in a 8 mtcn2g-++lc* f*9i6htn rpnqehgwt,o (jr*region where a uniform electric field is directed str*n onepht2g, 8 6jt9whmc+rg fclin(*r+q*t- aight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium neadyg9ouusx.-kv-y 1;qqq4 hs6 r an electric charge

  A positive point charge is e.t e15uhn hqq8nclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a po h .qt18uhne5qint directly above the hollow sphere has

State three properties of bm1au5ezoev4d. nz 14conductors in static equilibrium.

State Gauss's law.

  The charge carried by one 6 c uk1:yvej)o; k)uueelectron 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 tha-fd :0gpw.( gbhjvkn 8n electrons doe:0(bkdhf v.gw8npj-g s this piece of plastic have?

  What is the charge on 1 kg ofmmw570 5qlbh0jr p 9on protons?

  An atomic nucleus has a ,f7t4 )pwshfacharge 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 vaicw2d)/ qe- mrlues of 2.0 and -4.0 mC, respec dem/r)-qw2 ictively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the foc fvf:nt3mokc* kgwjnl4;*c5( s 4h5hrce between them is 1.0 N. What is the magnitude of the second charg mt 53 n*ks54lv*w4fgh;jockhc(fn c: e?

  Two 1.0-C charges have a force between them shbopcwf9; 4gbk;u6: of 1.0 N. How far apart are they?

  The force between a m z1d2q-,cgsz,u b8kk$30 \; mC$ 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 thexp6sq/g-hpmpskh n.9)a86 ayy are moved to a new a /mk n h6ss9x) aq.-86hpgyppseparation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on t +5p*ksxvm/., are-vr r 7dfkvhe 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 e s*p7kk-xf5 rv/,v+rvad.mrand direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A ch)x)q rbxw1h w+arge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 )xq1 bxhwr)w+ mC 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 lcx 32y.4zi caiocated at the 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 of the force on thezx i2ic .3acy4 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second polex))d;+2zw9tflw9 t4f u qfrint 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 actsz ewl)lwux +fr4 f9)t 9td;qf2 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 m0sog a.alpfhc6* 6)ud); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC cu0pghaa6d l o6s).f* charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2gqa9pv7 u ut82 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0).8gt ua2v7u9q p What is the direction of the net force on the 5.0 nC charge?

  Three identical chargec7;t39jqih ris of 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 one of thej ci9;73q ithr charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whatd tsk/ yt r:x56ih7ao fvg462l point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force actiotg6 fyd k:rah7t/i2v ls645xng on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C chargeixu:6k)qwrw52drojx y -09d e is at x = 4.0 m. Where on the x-axis can a third charge be plac-2 kd r uyrwwqd)9io6e50x: jxed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. We0bi.((ck; klv itjp 8here can a third positive charge +q be placed so that the fk(evlb8ii( ;ktpjc .0 orce on it is zero?

  A copper penny has a mass of 3.0 g. A t,ez78q6-qx 0ih nmd.zv 2gvyiotal 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 agny. - rzl-7bqwn:wh- ue( y9zhainst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the protn z. l7eqy9hw:wb-yn u(-rh- zon?

  Two 0.20-g metal spheres ji8a ps7hx)csw3y 2+ rare hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle betwee2hwjxps) 3y8a +i 7crsn the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40euz,76u-gp d fh. What is the magnitude of the electric field at a hp-6udz,fu7g distance of 1.0 m from the nucleus?

  What are the magnitude and direction of thete )t ihm7a 0br+5ro3e electric field at a distance of 1.50 m from a 50.0-nC e r)t3+i 5ahobrt7em0charge?

  A 5.0-C charge is 10 m from a small test chargmxi - qh55npu.b,dm i ;:1hfb0wft j.be. What is the magnitude of the electric field at the bub:.,ixmtp1h 5f jhw-;0fb.5 nm diqlocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directio 9cbcau2p0-lgn of the electric field?u2pc-bg9 ca0 l

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudemt :40m/tu5fgnvf ;j j xz2+3 bjr,uxy of the force experienced by a 1.0 nC charge pla 4/n vm+j0j5jy ugx fr ;mtxz:,32uftbced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a8jw a v5s4q,ly distance of 4.0 m. What is the electric field at a point midway betwee5q48a,wyljs vn the two charges?

  A 5.0-mC charge is placed atp,m8 h)rtrd;r the 0 cm mark of a meter stick and a -4.0 mC charge is placed atrm8d t hp),;rr the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 x1 3xg 9,vkoir6+js,ti hne v/;*xhfpcm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Ati/hxx fvtkie+,o63vrs 1jn9 ;x hpg*, what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.di6 fnz)*m7kcw+e 0n y0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the elfc zk*i 6m)0y+d7 ewnnectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of . 6vpgax2al3 ga square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squarev2.pglxa a3 g6.

  Consider a square which is1mm6 znk/j;f:7tobj59fgplq /g+sm n 1.0 m on a side. Charges are placed at the corners of the square as followmm lg6 : 1nmnzbj/9k ftpq/ +jog5fs7;s: +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 charge of 5.0 mC when it :yi;bw-6d 48ve5sbaj r-u ,w efl :infis placed in a uniform electric field. What is a5r8;s -ej v: ffw:b4 ynilbw6due-,ithe magnitude of this electric field?

  A particle with a charge of 4.0 -j gt gttu s.q9bm6s49mC 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 fieldn msc*/f 4q;1i niwca4 of 6000 N/C pointing downward. What charge must be ;i /cai1*snqfm4c4nwplaced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries aoz0 y:ogudfy eu1 1*4x charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude anddyy*1 u0zo4uxe1f :o g direction of the electric field?

  A metal sphere of radius 10 cm carries a chargp; pa p7it2. ,:ixjnije of +2.0 mC. What is the magnitude of the electricjiax :27ptn,ijip;p. field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a cha.0-hdda xp);hu92p xa+ ;uvjntz 9 mmmrge of 3.0 mC. What is the electric fimm m znu9j-v pth2ddxxa;.+0 h9p)u a;eld 6.0 cm from the center of the sphere?