State the law of conservation of elbcrz:yw s)om 5n1uiadq* 9 c+(ectric charge.

  Is it possible for twiqoq djas3,u+)- in8doo (, wao negative charges to attract each other?

  Is it possible for a positive and a negative charge to attract ycvzc 80xjri-3tw5n. each other?

  A glass rod is rubbed4crewh32q vck0p 4ez- with a piece of silk. During the process the glass rod acquires a positive charge cc0p-hw qr2e 3k4ezv4 and the silk

  A proton carries a

  The model of the atom show z(n-m6pc(wfq)+mjs o s a

  A neutral atom always has xj6w6i j9hy0h

  An atom has more electrons than protons. The atom s+gmf8 i+es 0dis

  Materials in which the electrons are bound very tightly tk8 ys f6f m5zrio9wg(6 gv244rwnm i,qo the nuclei are referred 94mv2i y6o4r8i g5f,kzwgrn w qs 6(mfto as

  Materials in which the elecdk0u)2 m kqimm3lx-0htrons are bound very loosely to the nuclei and can move about freely within the mqkhdm 0xk ul 03im-m)2aterial are referred to as

  A negatively charged rod is brought near hsmngls75 +(l3w+0 y z 6bjwhaone end of an uncharged metal bar. The end of the metal bar farthest from the charged r73z5mswb hl0h 6g jysln+a( w+od will be charged

  Sphere A carries a net positive charge, and sgwyo*nosc 8+gob5if9c92 j 6hugm ,u* phere B is neutral. They are placed near ea2,g ho6mcf+ 9ywni so*c85b9g*gujuoch other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charpu+00r/ er xuyged rod charge an electroscope positively?

  An originally neutral elvzbnsb );bfa1 v-uz/02 q2df yu6w( xaectroscope is briefly touched with a positively charged glass rod. The eb av0)/fbz f-ws2; qx2znvu 1 dab6y(ulectroscope

  An originally neutral electroscope is grounded briefly while a positively charggfeu2i vk +fv44hg*3vt80 tyw:jk7qnxs +w6ued glass rod is held near it. After the gl+g0gtts:f wvwu kfvuvyi7h6 xq432 k e4+jn*8ass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sepa1q4t-x3o y cx, wmk,lsrate. Then a negative object is brought near tmwqx,sxlo 3 t4 1c,yk-he electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral jgua;c-m0m(otd/ *c es.tq 8x 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 tq -ec ;ojm8s(d /xa.ttum0*gche 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 cr)s fn3jmvc6 sq,uihcd528(bonstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thet/ pnsot apy0v0m a431i.8xhx first charge is larger inn4 to.a/ vit8 pxsx3pm 10ya0h magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral.g ;u atkledv3yw4*/ag70 2qk+4 baoaz5dk i6y They are placed near each otheo d*ky5b6v2e;3t4a /4 gak uqyw l+a7 zi0akgdr on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract eachs*vhs3qux *p2 other with a certain force. If the charges on both objects are doubled with no changeu s *s*hv32pqx in separation, the force between them

  Two charges are separated by a distance d and exert mutual attracti (v spi010:peatgv j9lyt7wq6yp-cz6 ve forces of F on each other. Iie6gyw 19v:tpcsp06a (vlt-q jypz07f the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract els bvzi*;l 15bach other with a force F. What happens to the force between them if one charge is doubled, the other charge ibb 1iv sz5ll;*s 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 of 1.0 m. What happenuh5h*rf r1ue al53bz7s to the magnitude r*bf 5u7lu315rha eh zof the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hapr;wmb n.1 b1rnih.n2vpens to the magnitude of the force on the first electron if mvnbr ;n 1i.1bw2hrn .a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whatezh/ 3wf u9qd8 happens to the size of the force on the proton if the electron i9fzdh83/euqw s moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center3 trjm(mo,5 qjvxk/1c of a square. When a second point charge of -Q is placed at one of the square's corners, it mj,k3r qxt o/ cj15v(mis 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 is placed at the centroid of an equilateralfl p1m 3kwe95g triangle. When a second charge of +Q is placed at one of the triangle's vertices, an elelwe5 g 3m1f9kpctrostatic 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 i;b6s ml jy3.y qrev-m8s not a vector?

  At twice the distance from a point charge, the strengpvu1r9e/1m xvo,o1 r fy dznn/xby*232yfk.gth of the electric field

  Is it possible to have a zero electric field value between a negjg5rr7 j3 o:8ux cl1 3 k zcdy2hzzd.s84yc,zsative and positive charge along thgz yj28h jr37r,scsx 53udz1dzc :kyoc.48lz e line joining the two charges?

  Is it possible to have a zero electr 4h2l6alv(dct ic field value between two positive charges along(4h llcd6vta2 the line joining the two charges?

  Electric field lines near psitive po q6zt0pfd2osh:m---6c hj sm nint charges

  The electric field sh57nlgw*ml62k s(pqif *8a hed*l et s/own

  Can electric field lines inters gl:c5k(5za tqect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a ugah u0wsp/i *ql )t:z/niform electric field. a 0)zq/tp * u/lwigs:hGive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eax0hrp:sgz0 a bpjdps,pm6j;/ g1 vt27ch given the same charge, the electg0p mpzvdh; j spba,tjp x1g2:/0r6s7 ric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tab7qd9 iiu1pv +gle in a region where a uniform electric f+ dgpqi1 iv9u7ield is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilib usx-tuh.,c+r,z1sye b l j/x0rium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is guck7a+b0jpb+1 wkst/vvs4t ) rounded. As compared to w +4 kc+1akj)v/bttvp0bsu s7 the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in st+ft 4*y-ak tpkt d,w*kj 4sa7natic equilibrium.

State Gauss's law.

  The charge carried by one electron isu+m ba xg: w.r.7*/2jgkhgzz m $e = -1.6 \times 10^{-19} \; C$. 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.:a,7plpbsnjh+ 1 -kzk How many more protons than electrons does this pieka1 +p-7, blzskjhn:pce of plastic have?

  What is the charge on 1 kg of protocc6o/fe540)jihln w z;a(j+*jx bp wfns?

  An atomic nucleus has ans*vnjx7 mm** 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 valy mvb; o /h/trw85ubifs/u42 .3grv:u )gbsajues of 2.0 and -4.0 mC, respectively. What is the magnitude oug3ab5g/syh jw82b; ivmus ubt o: 4r).v/rf/f the electric force between them?

  A 1.0-C charge is 15 m from a second charge, an0h hgui.gy3q jet5s;2d the force between them is 1.0 N. What is the magnitude of the seconduhsgq;3t.5 gyeh2 0ij charge?

  Two 1.0-C charges have a force b*bem,v s 8vi*jetween them of 1.0 N. How far apart are they?

  The force between a mbr0e xr w+(,t$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a4w6f 6ntbz t+q 1.0-N force. If they are moved to a new sepat 6b6tn +zwf4qration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC /,a8k8wviyu-vulc 0 dare placed on the 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 and direction of the electrostatic foyk udv-viw/l88 c0u ,arce which acts on the charge at the origin?

  Three point charges are placed on tg2 y3wi1* iulehe x-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 ele1lieu 2ygi3w* ctrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions;5 x0 s e.dslu fdnh.3guhq83p 3efir*: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -.s;h5sud fhix0 un3g f3.q re83dpe*l5.00 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 cent0wm zejd( ;r*a x8r*neer 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 the mag zdr *ar8jnmx;e*0we (nitude 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.r,-mde9 xm ls40 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). exm 9-l,m ds4rWhat is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -13s9* i2ww uaqqjbl 8b0.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on theqa b2qs*wl8039 wjibu 5.0 nC charge?

  Three identical charges of 3.0 mCnm8snz-nn ,, 9huadx2 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 onexd 9,n-z ah 8n2,nsumn of the charges?

  Consider point charges of +Q8ym fu ;e.2sinrer2- r and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be pos22nsy -eurm8ir .f re;sible 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 charge is at 7cxkti//oy j* k7hyb6x = 4.0 m. Where on the x-axis can a third c*yi7/b6/ 7othyckkj xharge be placed so the net force on it is zero?

  Charge +2q is placed at the orisl1nc.x jy086vyqn -hgin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed s- x1v.hjnn6lycqy0 8so that the force on it is zero?

  A copper penny has a mass of 3.0 ng,j 6-4b3u f3 ud7un.cijne fg. 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 b+h3g*gm ptq5my-4r i5 7 lml;nlqe+tzy the attraction of a fixed proton some distance above it. How far abtlzy74- ght; m5*pqrlqm+im 5 3 +nlgeove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncon x; y/:tt-c3l oqaq1r/ko -terducting threads which are 30 cm long. Both are given identical charges, and the electraq telo:xtt /r/y3ckr;q-- 1oostatic 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. Whnstlp7)2+bj)e )bqm( wwnydt72rw +yat is the magnitude of the electric field at a distance of 1.0 m from the nucleus?)t7e)jrp) y s nbw22+ qdyb n(ww7+tml

  What are the magnitude and direction of the electric field at a distance op+c:tie 1q+va ghdz**f 1.50pv: qi + hegd+*za*1ct m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude (v hxi +-7w5wlyilwwx/f nrsk;c9f7,of the electric field at the lwcswifnkh77 wx /ix ;wr+,9vfl (-5 lyocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge.8)8jzhzjju 32dpa w;u What is the direction of the electric field?w8d8upjjzu jh2;a )3z

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the f ;20lc khvfd;)b6 imtcorce experienced by a 1.0 nC charge placed at the location of the test charge )d0;ikcc bt;6vlfm2 h?

  Two point charges each have a -dvj:nbcl z64:j -xx2o-gd ehvalue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point mid-zgj- :nxo-l2vhc jbdx6de:4 way between the two charges?

  A 5.0-mC charge is pls6:,az td5y-n 2cmfjweqg: 1gaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mz-g:e2n1 wqas5cg 6yj t:dfm, ark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a metc f0+xzv o(mtz6-c/ad eh4a8der stick and a -4.0 mC charge is placed at the 50 cm mark. At what point tocae-hm8f v / (x6cdzd+za0 4on 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 zru /0m.kl/iuy9db-r m. What is the magnit-.rud by9mk 0i lur//zude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sidop,pphrpw m6 ,58 guo2e 0.50 m. The last corner is occupied bogpp,m6up r52,p8 hw oy 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 xvry1w /o: aerx8c1)u 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 th euwxr yc1xr8v/:o)1ae electric field at the square's center?

  A force of 10 N acts on a jv38 nj4-09 wrmdwxagcharge of 5.0 mC when it is placed in a uniform electric field. What is the magnitudeg9j3 d48v xna wrjwm-0 of this electric field?

  A particle with a chm g6e r9l(xb;awl0:eyarge 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 is placed in an electric fihyw457r,3ipet -*l sdx n3xoueld of 6000 N/C pointing downward. What charge musduy i*-343x,5xwh tpr7loe n st be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed ix7;pf+) i*cnf p bhi8hnside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and dire+h 8nfibh 7 x;fpcip*)ction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC.w j0x94 onl9lp What is the magnitude of the electlw j olx9pn490ric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electjo r: u0yo h-+ q0a.lx,bxhr:8dmds2pric fieldrourd-:aqjslh8o 0 d0 2xm b.y+:xph, 6.0 cm from the center of the sphere?