State the law of conservation p :din ivw i ,u1vsu;3n/i+q1h gl9i0cof electric charge.

  Is it possible for two negative char:7 x;yqwb 2 xhmxdh+e.ges to attract each other?

  Is it possible for a positive and+b7xl.m8qf2o yj e or/ a negative charge to attract each other?

  A glass rod is rubbed with a pirlit9e/t5 p*4uop :mi1 akg a2ece of silk. During the process the glass rod acquires a polmi5aip/9ktg: re au4 p2*1o tsitive charge and the silk

  A proton carries a

  The model of the atom * 9 )wfisbz9yj yah.a.nar 1(ushows a

  A neutral atom alwayla+ -pkd -220kfv;evbwfcd w1 s has

  An atom has more electrons:cwr0aqe3w 0lu 5 v81jy9hurs than protons. The atom is

  Materials in which the electrons are bound very tightly to the nucle ohidi+2s z7 3,nv0kd,aq 8lnqi are referred oi,dskn0h 3dl +a8 2vinq7qz,to as

  Materials in which the electlj263ky uukzo 4t*5 bpyye.c*z uq7c-rons are bound very loosely to the nuclei and can move about freely within the material ary42u yk .6je ubp-z lq**3k57yuct czoe referred to as

  A negatively charged rod is brought near one end of an uncharrh yh7b635t.c r3rpq hged metal bar. The end of the metalr73cy 5t p3.br hqhrh6 bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge,j ordl5615 vjm and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is lv dj5mor j651grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscopt+y8aemfh po1ck .m7 byu 7:hb(q)bq ,e positively?

  An originally neutral electroscope is briefly touched with a positively charged c8oq4h *5;rhd +fbri 5ur4 )+q ofbcmyglass rod. The elec;u* cqh )5r f8bo4bc5m+yf 4+qorhdri troscope

  An originally neutral electroscope is grounded briefly while a po )j .m2jkl2ud: x(quaositively chargedj(u. jo2:qa)mkd xul2 glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separanrwmz5fb l -jor1/+b8te. Then a negative object is brought near the electroscope, but does not touch it. What happ1znrblr/b+- fjwm5o 8ens to the leaves?

  A large negatively charged object is placeao,bek/dkm76rndj)wce tu l3 (496vud 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/)bl3dmu r jkt nw 6(a,e46e7c9 uovdk 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 consx v;l9e)izx ; 27uxjfq4btzab 7(d(xu tant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Th16nk6t8q 9rds0w gia (-fhp sw 8w82j rlicku*e first charge is larger in mag2p1tckw s8 wsl w*r8h(-iij06kgfn9ur8q6 d anitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. (fsxht.ke*qe78f c2b They are placed near each other on an insulated table. Which statement best describes the electrostatic force between themcet.b(*fk2qfs7 x eh 8?

  Two charged objects attract each othe f92rb;pe5 ey 2e.khrkr with a certain force. If the charges on both objects are doubled with no change in separation, thhkr.y ;2fb 5ke2ep9ree force between them

  Two charges are separated by a distance d and exert mutual attractiveqjcz3/5pxgxv)/+eevo/3rionf nh +-()aka y forces of F on each other. If-5x+(a giaqonp)o chv/+yxferz/njvke/ 3 3) the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each ott2 +l)bugka :y*mhck- her with a force 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 red)ubtm cy*:+2-lkk aghuced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated 9jdnlxzt9qous61r +2 by 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 firx12 rqzot nj9l96dsu +st electron?

  An electron and a proton are separated by m2pm y0ozf06e a distance of 1.0 m. What happens to them oyzepfm620 0 magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a protonsx f8ig-y jo-:11lpij b vx5b3arp0by55zb4r are separated 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 tj55-11 lbprbfa vbjigix4oxyysp:5b3-8r z0he proton?

  A point charge of +Q is placed at the center of a squa0j.gg yz6+ lrnre. 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. Whagzngly.+6 0j rt 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 t( 6jsv s10lozche centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic forcel0s(z j6sovc1 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 vy qpfxer57f 6 ,u)m0pis not a vector?

  At twice the distance jvd fucj j .,gs,+x3+os4xed3from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and positiot5ffq *j**r rve charge along the line joining the two chfrr5 otq**fj *arges?

  Is it possible to have a zero electric field value between l zypo2 0sw:+gmi1cd*two positive charges along the line ji l2*:+wpys1zgcdm 0o oining the two charges?

  Electric field lines near psitive point cha( u,ugux2 i)jq,mz1ei rges

  The electric field shu 5sz n-uj9/keown

  Can electric field linbb/g9ekm syd0+8- ru6zzw.4 ve2 fccoes intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed ipn7o79 ve0h7lnz 1 +awuq )umtn a uniform electric field. Give a statement conn17pu 97o07) uhv awleqmtz+ncerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal spheresv9)zg/-ox kh of equal diameters are each given the same charge,-zsh x/9)o vgk the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a rexkdda-6+ k) ztgion where a uniform electric field is directed straight upward. What can be said concerning t -d6daxk)zk+t he charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chcewrgu8g v*:oi *ocd6+2p dn 2arge

  A positive point charge is enclosed in a hollow mqup-o3 ;vhohbwksmb7s0,+3z p3 cu,zetallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point direct-ou,mp0usk 3vzz+qc,bhs b h 7po 3w3;ly above the hollow sphere has

State three properties of conductors in stat /zhk4 bw8atl6e00wt fmhg4a 7 i/evn6ic equilibrium.

State Gauss's law.

  The charge carried by z+vt. 0ybaptlh/c 0 4cone 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 +2kzg uxjd--/ 7boqg4v o/lyk2ki06 s8zu;j m* z.00 mC. How many more protons than electrons does this piece of plastic qmik7 x2s84l60og /zgbu-j*/yjudk-o;kzz vhave?

  What is the charge on 1 kg ofvz2: llbiwo 9mr;z- )w protons?

  An atomic nucleus has a chargpi6+q7dobu ) zq3 y0c v0xdvvqfnb*zxa7 92*ne 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, ha3 hytik6iy r29ve charge values of 2.0 and -4.0 mC, respectively. What ik9r6 3 yihyi2ts the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a 5 weozuu*gf) zui*+k2second charge, and the force between them is 1.0 N. What is the m)5kzz +2uuoi** gw eufagnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. v 0 pg0(dmt.fu3pdf j;+2ldv u How far apart are they?

  The force between a :3ajo/t j;nmhkqa+b e639wsm q,dg8 m$30 \; mC$ 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 qo5g4, wyvl3tthey arlqoyt g435 ,wve moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fid kdsu :0sma*z od.25nrst 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 acts on the charge at the ori o dss0*maz 5.ndk:du2gin?

  Three point charges are placed on the ( rl1 .su(tkiix-axis. A charge of +2.0 mC is placed at the origin, -2.0 .(rlk1i(s iut 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?

  Three point charges are located at the following positions: Q1 = 2.0 8)hjax5md) zc0 mC at x = 1.00 m; Q2 = 3.00)5xz jm)8cd ha mC at x = 0; Q3 = -5.00 mC at x = -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 po(b3ihska-dp lmit(t 0g7a 69e int 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 acts on 6g79-ba3t0e k((dhlispt m aithe 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 isc5fgxy gbdqns8l:t2(n :.wn; at (0, 0). What is the magnitude of the net force on the 58x.sn :; 2t df:cngbqyn(glw 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC r / 7ebnbo m)z3wdp7*+b-rm qxis at (0, 0). What is3mo)r/ zdmeb n-+7pq7bx*bwr the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed +.x 1. efrhxm;jjcx*cv ,4uijat the vertices of an equilateral triangle which measuresxc. jc.f, r1uxmj v*;+ixe jh4 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 zo7f) 7rjz93ho/ybta and +4Q, which are separated by 3.0 m. At what point, on af7a7ztz9jy r )h/3b oo 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?

  A +3.0-C charge is at the originlvt k9/xyx v gxv:a.gm(86z/ c and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net fxc8x9g. a vygtz :m/6 xl(/vkvorce on it is zero?

  Charge +2q is placed at the origin +cr5pt7aauu 81w f )8stjw 1wkand charge -q is placed at x = 2a. Where can a third positive ut7fpc5+8)rwtsk j 1ua8aww1charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. c+do5yvk.zwk*-sb q oo.k 2p.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 thck-r,-s,d/q lybs 3lzy9 pq5je attraction of a fixed proton some distance above it. How far above the electron i --j,pdy/9k5llqrb ,z c qsys3s the proton?

  Two 0.20-g metal spheres are hung oqt(p;)f5 ,c jwe kc7mfrom a common point by nonconducting threads which are 30)ojc,(c p tk5me;fq7w cm long. Both are given 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 is the m + zmzi/*q ytj6i1m-ioagnitude of the electric fieldz-*+yoi m/iz1 j6mt qi at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.50 l 28vxnrfcvgk ,5,qv)ajp 73vgfvl,r) xqp2vnac j,7kvv3 85 m from a 50.0-nC charge?

  A 5.0-C charge is 10 .hmotljrrr -lejddbm*g, 4s,5cf35.m from a small test charge. What is the magnitude of the electric field at the loca r.e.m3toj*l h5d,m ,f4g rl-cb5srjdtion of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directio)6dxiykn 795sb r,*wuf,l wr ln of the elec*sbr nk)uf,lid,56 97xywrlw tric field?

  A 5.0-C charge is 10 m from a small test charge. What 5gfqaur(nqy t 8qn;8:u6+ j qois the magnitude of the force experienced by a 1.0 nC chqrqa +n(t5nq u:8ofj;ygqu 86 arge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated bj v4nqep2 0o:yy a distance of 4.0 m. What is2:0np jevo4yq the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of ao ,,wu-9pl0 zq3f ler,puz8nx meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric lpu wuf9r0 8,e,o,zzp l-qxn3field at the 30 cm mark?

  A 5.0-mC charge is placed at the abyf rrc:;sl,i4u 1 i90 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mf,ryr ii1c l9b4as: ;uark. 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. Whzr*y/g etc : nef3bb*9at is the magnitude of the electric field at the point midwac9 fg/e*n*rybzbt: e3y between them?

  Three 3.0 mC charges are at the three corners of a squ8omlhf5ic s;g 6a+8,-jxfl( wj6v.fedisk( tare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center sflfjjcs (k.iadh+lxf5mi8v- 6;egw,(86ot of the square.

  Consider a square which is 1.0 m on a side. Charges p ;gksx j7jebl r5(v7/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, 1). What is the magnitude of the electk s7pj7j r5/bv(ex ;glric field at the square's center?

  A force of 10 N acts on a charge of 5.0 d8j jwundff7r7*2ydny- w):nmC when it is placed in a uniform electric field. What is the magnituderdj-nfwuy 872fd y )j7w*dn: n of this electric field?

  A particle with a charge of 4.0 mC has a masgqom)0 j(r0 4m*(q1o guenruis 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 ann2:e. t9hywgd5) ddokrmn+d 8 electric field of 6000 N/C pointing downward. What ch.r dyt85weo h:)k d+g dnndm29arge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chae lqx5 t4n9hcs0yfa6wg7 n 44 jpzza8(rge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended a5c4w44 7 zl qe9hzj06ag(nyfpnxt s a8gainst the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries*axd5d 2/h rk1*6zqmku tn j:y a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's sud:k* q/2jktyx 6d*mnzua51r h rface?

  A metal sphere of radius 2.0 cm carries a b.p4db4 ) mhb2qukjx4charge of 3.0 mC. What is the electric field 6.0 cm from the centx44bpmbqhk4 d ) 2bju.er of the sphere?