State the law of conservation of electric chargeu3ko4s c8d.vw.

  Is it possible for two negative charges tqga a7prcjtmf *8 1 ezuw.5-n/o attract each other?

  Is it possible for a qku26pj-o4r)pkmq da98 s;p z positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Durizu 1,wkxi+ra7e .x+m fng the process the glass rod acquires a pos7me+a, i+ wrxu.zf1xkitive charge and the silk

  A proton carries a

  The model of the ator3yy)t:2 sezf a7 g(iym shows a

  A neutral atom always h1a )r4gqrhnv6mkj 9c/ as

  An atom has more electrons than protons. T 0r(:hbfmzc *u 0m2 oibrtkz6;he atom is

  Materials in which the electron5h8ts6*b:c0a bcklxvl4,wer b8 x0 qq s are bound very tightly to the nuclei are referred to40tsc qcxbxl * ek8lw65:v0hb,8 rbaq as

  Materials in which the electrons are bound very loosely to the wq ei/c ))/-gae 1hqgdnuclei and can move about freely within the material are referred to ehc/a-/) )qegqd1g iwas

  A negatively charged rod is brought near one end of an uncharged me+2 sk/req-zjw ofs)p 9u3q.qu tal bar. The end of the metal boss uzjk/w)q9rqe -u p.23 q+far farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pl8 c q.zoilov+;aced near each otho ;o 8.izclvq+er 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* m kp)bnr6goi0(v /)*guv zlyuznw./d charge an electroscope positively?

  An originally neutral electros ggl/m2wr(7 7ucv/rcjx z*9tm cope is briefly touched with a positively charged glass rod. The elecl7/ m(t7wuz mxgr*r2 jg ccv9/troscope

  An originally neutral electroscope is groundeosu/af p8 57apd briefly while a positively charged glass rod is held near it. After the glass rod is re fup/7aap58 somoved, the electroscope

  A positive object touches a neutral electroscope, and 4q(hqvow 7z+e ah 25p6 uq7rjuthe leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What hvo+ h(qrp6a2j57ewhu 4uq 7qzappens to the leaves?

  A large negatively charged object is placed on an insulated ta tk br2wtt/-e8ble. A neutral metallic ball rolls straight toward the object, but stops before it touches it. tw2tkb/ e rt8-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 the Cou:xxmvwl* .c q 1*l4jrixl(v 9dlomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d.p5z79g7es :y5 z5+be0yn t.ygwkujol The first charge is larger in magnitude :zu0pe tyy.yg 55n7 slw zjebk7o g5+9than the second charge.

  Sphere A carries a net charge and spher.cpfd 7n.-p c -hxfkv9e B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic forcef.p.9k--xpvfdhnc7 c between them?

  Two charged objects attract each other with a certain force. If the chajxgf15q b 5n/erges on be1g5 n/qjf5bxoth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces ofkacrs5a ujsrgpw9vc/h*.( 9- i h9 b.j F osp i rjw(cc 9/hh*jg . r5ba99vska.u-n each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Wk5;)/njg q kuvx ws lxma441y7hat happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to 4;/5wxys gu4vk )1nqalkjmx7one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1a. gksjv)l*x(l3u o0p .0 m. What happens to the magnitude of the force on the proton if a sec3(j k al)o px.ul0vs*gond electron is placed next to the first electron?

  An electron and a proton are separatenimcn gt;:op: ; 4j5ngd by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the prot n jnm; g5pointg:c4;:on?

  An electron and a proton are separated by a distance of 1.0 m. Whatnup7wzy 4z:)(rmg zn9 happens to the size of the force on the proton if the electron is moved 0.50 m closnzp4r m)y 9uzg(wn z:7er to the proton?

  A point charge of +Q is placed at the center of a square. When ag58g0c.3k ronv*rfft 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 corner*f5 .ct8vgf3 nkorg0rs 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 d8 hhe2.fhrtt sk7mnsnfw,+z; e 1b)6an 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 magnitudnref8;h+ ),h ekwsnf ht1m.z67t db2se 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 noo3zo3+h 3s(wnfsdbk bmq65 p*t a vector?

  At twice the distance from a point chaq472 xn,ui y;( ))uvsrneja vl8twli2rge, the strength of the electric field

  Is it possible to have a 5 6vr3lfxyjd 7.eoj3gzero electric field value between a negative and positive charge along tj 3fx.ol 73 6jrvedyg5he line joining the two charges?

  Is it possible to have a zero electric field value bet:b ymq-vpbl -rk*igtwt ( t)1/p o)nv(ween two positive charges along the line joining th rt*y(nmqbo:t)1v wlkv-/t-()bi pg pe two charges?

  Electric field lines near psnh4a,mid uqpr :;a(*2dj 0ybr9j /(zm nnfub(itive point charges

  The electric field showkcdv4hqfy 8; 7n

  Can electric field lines iwquxl pv -qvaa9b8: ,:gy56zontersect in free space?

  A solid block of metal in electr/umqn t;bs -mn,75 czrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric cnt n mr7/s-, ;mbuq5zfield in the block's interior.

  If a solid metal sphere and a hollow meta u7x5hopgw4 3al sphere of equal diameters are each given the same charge, the electric field (E) midway betwx37 45phguaw oeen the center and the surface is

  A cubic block of alumi96u4fl nivss -num rests on a wooden table in a region where a uniform electric field is di6is 4vu lf-n9srected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equili z-vn02 +1syjxucxze)lb * v3wbrium near an electric charge

  A positive point charge +:qpko3cy( h,-d *azi m-b3wcm/jin ois enclosed in a hollow metallic sphere that is grounded. As compared to the case without the ho +km- aocp*/cwq-idni zh(j3y3mb,:ollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stat2 )hk oatf/t ehns1;j)ic equilibrium.

State Gauss's law.

  The charge carried by one elecd 8b7cj vpi0art9)/yy tron 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 chargeygm:gg ndy5q99y 7hb: of +2.00 mC. How many more protons than electrons does this piece nyyb5 99gg :7qmd:yhgof plastic have?

  What is the charge on 1 kg of pfc mu-x)vg9e 3rotons?

  An atomic nucleus has bc/r0d q zj-vz+599j(p,mbe *nubzv ga 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 o hvin b,/;dz* 8i:iko(cvi6cwf 2.0 and -4.0 mC, respectively. What is the magnitude o(zdiv8i;b* o h/6:k,vcnw cii f the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and ;i2 r2kasne7jx e1m dec+(kx*the force between them is 1.0 N. What is the magnitude+ rx xa1 siek (c;jekdn2e*72m of the second charge?

  Two 1.0-C charges have ahm):in( hp3cyz ,j w6v force between them of 1.0 N. How far apart are they?

  The force between a p8ti /wqz4 x +iq( xhs) ocdkjv..a w.9sbam*2$30 \; mC$ 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 force0q8ch /ugj -nk. If they are moved to a new separation of 8.0 cm, wha8-ug qcn0kh/ jt is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-ax1r7 t ax5,ztsqx8p7wxis. The first char715z xt,sx7qra tp xw8ge 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 origin?

  Three point charges are placed on the x-axis. v z.mbol8mp ;3e*ip8op+ md7,zfj 6(rrik9kcA charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50rr+db6coflj(mkk i88vo3 7e z p9z;*,mp.pim 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 pi/3i )6zd rzi h/iokpr.pdi3b1r n)5z ositions: 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 pok) iiz/1 i./p)h6iir3nrdd3b zrz5of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second p- (:r:i:khqyr boy2ji oint 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 the center charge if a thirb:y jr o:yr-h(:2 kqiid charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC i,e gx 8syfvkt yfp:t5za)s 8-3s at (0, 0.10 m); Q3 = 5.0 nC is at (0, y853f8s-yvapke ftx :)zs gt, 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 t*5 ck/frwe;) 3pozw km, 0); Q2 = -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 charrkc5ew)w z3o k f/t*;pge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilaterah gi.(w+ fl, j; ,x(tfqkf,gvvl triangle which measuresf flh,(vq (;vfjgg,.x t iw+,k 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 arkwmx ppa +-c)2 zy(q9wx+ ko3we separated by 3.0 m. At what point, on a line wzk 9+wcma -o+ )x(23wpkp qxybetween 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 origin and a +9.0-C charge 6 )xr-h,( vua rwo.tbud8)qi f*sofp6is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net fruvfo)a 66bp*8- w. uis( dthr)x oq,force on it is zero?

  Charge +2q is placed at the origin and n 5( uqau- l (;py83qhgymsg+icharge -q is placed at x = 2a. Where can a third positive chargqy-(s gm(aui gnp;l+q3yh 85ue +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totun tqi616dp07tksng)iaspa r t.8;5nh j+bo+ al 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 +4oj3 wl:igd5 63kbvvwrqya9 the force of gravity by the attraction of a fixed proton some distance above it.:yk+w53aivjwg6 qo493bl r vd How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common pm7ycmb/x4d 6c6 s*itju; w.nsoint by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsiosxbm6jsdcniu.4*y /t 7 mw6;cn 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 magnitude of the electrictg. oq 2.30wtj j94kgcnt:( tydlzd7p field at a distance 9qky.3 wg2(.jon jz70t:l t4ddpgtctof 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a disnvu 6 9-q8vctaiu va83tance of 1.50 m fromq3au6v 9 acvuin-t88v a 50.0-nC charge?

  A 5.0-C charge is 10 m from a smalq ( wna/w0rmk-l test charge. What is the magnitude of the ele(mwa qwkn -r0/ctric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is thezk ayk5 f9+:z0xo q7u10rwwwve/3i az direction of the electric field?7uowkwv /9ex +5fi0az:r q 1zyak0 w3z

  A 5.0-C charge is 10 m from a small test charge. What is th-wjnn(2ypz 9t nhzxu6,x7t c2 e magnitude of the force experiencedn2 zyxhnp -ucz962 j(7tt n,xw by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are scjad+ a q-j 1k7 wzmf8lio s,d-:)itr1eparated by a distance of -q7f arj jc)ts malki dd8:+,i11o-wz4.0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meiicmqk-4 (krwg4f ,u p6o)a 2dter stick and a -4.0 mC charge is placed at the 50 dkaim kpw-)4u g6rc(2 of,qi4 cm mark. What 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 yyt7 to0btvbythc1 4 5/ b9drb49egb 6-4.0 mC charge is placed at thby94 0 /1ybb967tdbrcehy4 5g vttotbe 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 placed at x = 0 and x = 0.20 m. W;u rmi/goa c j*m4qu+8.w3japhat is the mag.r w mug j;oimcjua4/*qpa83+nitude of the electric field at the point midway between them?

  Three 3.0 mC charges are atc6rp5 e9wrkws-8bk / x the three corners of a square of side 0.50 m. The last corner is occupi -5/kre w98p wrkcx6bsed by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0mv*- y*y0wtupmc 4ir; m on a side. Charges 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 o pvy r4;um0y*- mi*cwtf the electric field at the square's center?

  A force of 10 N acts on a charge ofmi))ykny;ewmvmxv o :3x u -3-:k.apx 5.0 mC when it is placed in a uniform electric field. m:a .n xuvpi xwo-emy:vy-3)mx; )k3k What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a ma.xnr q:*ki+ vess 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 field osmpe;a,. o .mef 6000 N/C pointing downward. What charge must be placed on the ball for it t. a,oem;es.pm o be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The b0x (oy,u kjf7wall is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitudwxokuj ,70y(fe and direction of the electric field?

  A metal sphere of radius 10 cm carries a hzz i*e(7vnoe;k8h,i charge of +2.0 mC. What is the magnituh7 eovn ( kizh,e8;*izde of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge kv;kr:+z af4ewr 9rmh9,s dsn g.83opof 3.0 mC. What is the electric field 6.0 cm from the center ofkon p 4d,8vhmrrkws9 9a f.r;z:es3+g the sphere?