State the law of cons otbxy3op 91uqdnh :vb9tf774ervation of electric charge.

  Is it possible for two n9.muibsi+mcp *y05k ec5dq t;egative charges to attract each other?

  Is it possible for a positive and a negative charge to attou0ma/md-a n1ract each other?

  A glass rod is rubbed with a piece of silk. During the process thel: pig*46-l mflyy5c hl wmq-( glass rod acquires a positive charc-g4qifwl5m6 lml*yhly: -( pge and the silk

  A proton carries a

  The model of the atom sh3uzlec:yv t 54-db iz3g+g6ywows a

  A neutral atom always 872nwcd6 m :wtqmbxperq8g,4has

  An atom has more electrons than protons.zqa x la.uyg)9. y4zq. The atom is

  Materials in which the mv) p q8wr8qv yhxc491electrons are bound very tightly to the nuclei are referred to 4rh8p18qvxy qv) mc w9as

  Materials in which the electrod e,+juig *5v)wtdn0ins are bound very loosely to the nuclei and can move about freely within the material are referred to aiw i5*get0uv)+jnd ,ds

  A negatively charged rod is brought ztn g -n)owz8:near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chg-tznzw):n 8o arged

  Sphere A carries a net positive charge, and sphere B is neutrgd0wpjg ip f)5lm90 f9al. They are placed nf95 gi9gjlw0 m0)dppfear 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 rod charge an electros;z/fkq *g,q 1gt 7wkq o5h*tzocope positively?

  An originally neutral electroscsak4r .cw xxw0br w9xr b:.*.nope is briefly touched with a positively charged glass rod. The elbrs.r9w0xr.awx*kn c4 .b:wx ectroscope

  An originally neutral electroscope is grounded briefly while a py;+ ojo yvr.p(w5zp 9d)nxp r2ositively charged gla(zd9xpo;2pvnw)o. 5yj+rr py ss rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, ah) 8 ziaeuwi- kyb b9q;6yh82knd the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the lkh2kywi 9uy)a zibq 6heb8 ;-8eaves?

  A large negatively charged object is placed rc42k 5r:dg i o+ +nhv *ucgx8,,cenp:wz 9mnyon an insulated table. A neutral metallic ball rolls st 8 :wu er,:ggkniynv+hcz9 +cdr pmocn,5*x24raight 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 either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of 621tmis tuc7p the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largerc wjat 1 s)qx*7z-p*os in magni* )ca7oqpt1s-x zj*ws tude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They artb)dsec i1 (-oe uv))xe placed near each other on an insulated table. Whi xt) si)ocv-u)e1e (dbch statement best describes the electrostatic force between them?

  Two charged objects attract each other wi(80 kypcn:0h:cpcxa o th a certain force. If the charges on both objects are doubled with no chac:pc h:(no 08pxa0kcy nge in separation, the force between them

  Two charges are separated by a dis. bixx.02d wr(khyd ;mox1r 0ttance 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(20;xow t .rhmbr 0 x.dd1kiyx new mutual forces?

  Two charged objects attract each other with a force F. What happens to th3xcm4f7 d /r6qvnq a7ge force between them if one charge is doubled, the other chargafqq7xgcn6d 7r v/4 m3e 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 separated by a distance ztz0 cr5+4dgv of 1.0 m. What happens to the gdz 50+rv4 tczmagnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated/q jizdbop/x*o6) 9w+ e8o iac by a distance of 1.0 m. What happens to the magnitude of the fop9b6eoxoiq/co*8a)z+ / w dijrce on the first electron if a second electron is placed next to the proton?

  An electron and a pronq.f9 6 2cfxsn ,l+ilgton 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 tofxq6cglnl n .9i2sf,+ the proton?

  A point charge of +Q is placed at the center of af37 + rxlrxxlft(p ;mf3p w:w;s,0oqj 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 chargt s; xfw f, p+jrl:0fmw;xq(r3pol7x 3e 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 at the centroid of an equilateral triaj ilez2 58:hrangle. When a second charge of +Q is placed at one of the tri e5:ji h2ra8zlangle'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* ; ys)fmgz(hj 0)jtidu56 mrf036jager,t rj not a vector?

  At twice the distance from a point charge, the strength of the 7hzaghv y83hk. *ah0we s,9 yvzl-d1welectric field

  Is it possible to have a zero electric field value between a negahzj +pm/d/;v vtive and positive charge along the line joining the two charge+pmz dv/h/j v;s?

  Is it possible to have a zero electric fglz5ud9bql ;f(f:b 2d 09t,nz:alyj gield value between two positive charges along the line;z9jbqya 0dglf:dz5f9(2lb:t g l n,u joining the two charges?

  Electric field lines near psitive point charosn f1u4-uv /.k bwq:lges

  The electric field shown gk;- l gx -.:alwzqe+d

  Can electric field lines x1mc0yz y4vw 4i ngj*6intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform e -5rv ahe0u.qelectric field. Give a statement concerning the electr.5a e ev0q-ruhic field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are ea pz)6/agigzcsfj-t 89c;1aq ach given the same charge, the electric fieldfaqa9/piz t scz)cjg 86-; 1ga (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woodea1p2ng qmb+)yk w*3din table in a region where a uniform electric fibiyq)mwk p*+ nd1a32g eld is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electricucc t3-gp o a(lt(*v,j charge

  A positive point charge is enclosed inziv)(h uh/k)x 0gl-ri a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric )vu -) g0x/ri zhhli(kfield at a point directly above the hollow sphere has

State three properties of conductors in statiwo4l4sqpn4 -zc equilibrium.

State Gauss's law.

  The charge carried by one electron ise j1,dhlfe hhi8+iiq7j n ;y;er/yp8 ; $e = -1.6 \times 10^{-19} \; C$. 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 proton*d/s65xntv jjg-l me-s than electrons does this pjxj lstgm-e6v 5nd/- *iece of plastic have?

  What is the charge on 1 kq;9y1qsrhvi )5c, nf bg of protons?

  An atomic nucleus hav81 rb*+stsm ts 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, have charge values of 2.6ss7k, 8nmock0 and -4.0 mC, respectively. What is the magnitude of,ks7mn k6cso8 the electric force between them?

  A 1.0-C charge is 15 m from a second chargeymb s0 t,jp7v., and the force between them is 1.0 N. What is the magnitude of the second ch,y.pbsj 0m7v targe?

  Two 1.0-C charges have a force between them of 1.0 N. How fa,3qmy /9u)-b hc idffur apart are they?

  The force between a dg 6n8mq6(6kop )y)si /lvfe u$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiensd(+rj;ffxe:ju6ur(k32xam d o h h ,:ce a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between ua; jmhhx+x:du(:j 2f3rsd orkf,6e(them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chhjq tfdr 4v;52arge 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 tq2 4 r;j5dvfhorigin?

  Three point charges are placed on the x z9uglx8er)z/*j .8ziiztn4x-axis. 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 force which acts on the charge at the oriz/zet 8un zg. j*xiixlz)r948 gin?

  Three point charges a 9ue( 6yhlw,xx,eztqw9(bqs3m /)nos re located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 et3s,e9 x(sn b (6l9qhwx/ omzu ,)wqy= -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 p1l ;vd2ik .uzilaced at the center 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 t2z.i1 lkd;ui vhe 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); ubod ugh wyzl-22j.5 -Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). 52 z -l wuud-.bogh2jy What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is yepryt,(gg),pxkr 6d4i k eg 7c5++apat (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 chargerr )5p+xepcy,4,gg7ypea6dkt +(gk i?

  Three identical charges of 3.0 mC are placed at the vertices of aw.dh7dd1 ks+-+ aj aukn equilateral triangle which +7a aud-dk1 jdh.s+ kwmeasures 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. f0 p41 re5pjmpAt 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 5jfpp4pmer0 1 on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m(ob/ jgjqt/w-)b2n0ah gny - v. Where on the x-axis canatgnobg/y-2j)h- 0jvw/qn b( a third charge be placed so the net force on it is zero?

  Charge +2q is placed eetu nf9q4u zui40jn:d i),v/ at the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it izve4uqtn)iun:ef u90/,dj4 is zero?

  A copper penny has a mass of 3.0 g.5 a./tb0e nii4asoap6 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 againswyti3,* xv/ac yikp,.in 6cx 2t the force of gravity by the attraction of a fixed proton some distance above it. How far above the electronn.kci w,y i/p*t2,cvxxi3a6y is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncont,vxj m*bf8:7kh7c5t t4yy u)sdmkq 7ducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threadsm mk784 7:q hvctb j5k,txyu)y7st* df is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has ajb1ec(y,/ jn d1uszq7s 8bvo 3 charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the,3/j u18 1vnbjoqyd bc(ezss7 nucleus?

  What are the magnitude and direction of the electric pxb jlb(sncu7 ku5; w)i,*je9 field at a distance of 1.50 m from a 50.0-nC )k slx;(bwb cp*j 9n7i eu5u,jcharge?

  A 5.0-C charge is 10 m from a small test charge. What is th/ pz02(o.qqma;pb cjze magnitude of the electric field at (aqqpbm.0j o2/ ;zczpthe location of the test charge?

  A 5.0-C charge is 10 ikw, a3mud5mb 1qphp s4neuisq:z/4cu.( ) 5lm from a small test charge. What is the direction of the electric field5udu:5pebl)mm3 1 h(i4 k/wqucszi,4n .p asq ?

  A 5.0-C charge is 10 m from a small yrcm7hoo16 2zn;+cbs test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charo7 h2 o ;b1s+ycmnc6zrge?

  Two point charges each have a value of 3.0 C and are separated dkp 7ffbyg*yv b84yf:y(n1*q by a distance of 4.0 m. What is the electric field any: 4db*gy k1v8fpqby* yf(7 ft a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick anetkp98vb8f 8j d a -4.0 mC charge is placed at the 50 cm mark. 9k bje888 tpvfWhat is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 m kalx:hi2(a(gj btw .td)w/4oC charge is placed at the 50 cm mark. At what point on a line join4o a)dtg x2h :(i.bwawjlk (t/ing the two charges is the electric field zero?

  Two point charges of +3f,- nu8bz:0uoxi by m5.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the mag,mfb 5oui8 -xz0uyn b:nitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the*mao+ . qz0d4uku ygt2 three corners of a square of side 0.50 m. The last corner is occupie .zyqdtkog*u4 m 0u2a+d 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 placed at the cornex0 yp zr)wf 5*yg57pb7bd-i9mbt2r yurs 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 th y b7r wibf5m* 0yp 59tdzr2-)g7xuypbe square's center?

  A force of 10 N acts on a charge of 5.0 m5/+s4 ; r :dn vwcyutc+/qahleC when it is placed in a uniform electric field. What is the magnitude of this y5dl qvn4+r+h/c :s;ecau/ tw electric field?

  A particle with a charge of 4.0 3h.1rcw6 )oo e+ jacxwmC 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 7um)(eto d 1xvplaced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for i1doetu x7(v)mt to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is girv6ran20-r1(ir gkaut j 66 placed inside a uniform electric field, and is suspended against the forcej t1ranigr2(uia vr 66gr-60 k of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a cha nn,cau,p 6x,zrge of +2.0 mC. What is the magnitude of the electrica c6,p,zn, unx field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 1h/rth vxqq8jt(:ov tfz :5*vcm carries a charge of 3.0 mC. What is the electric field 6.0 cm1txhzfv jhvv t:( */qt8orq 5: from the center of the sphere?