State the law of conservation of electric rx6o(h7tz q(b()oyc t charge.

  Is it possible for two negative charges oshrivsy p6u76i):f (h(ayg0 to attract each other?

  Is it possible for a positive and a negative charge to attract eac5mj ivz0 nefw; 8g8- sza9*ovch other?

  A glass rod is rubbed wit(h8dtv7n e x2j jfz)6 rsl..hxh a piece of silk. During the process the glass rod acquires a positive charge and the 6ln 7z.j 2t 8j(d)xsve hrhf.xsilk

  A proton carries a

  The model of the ato pems-p p6n321f; yrdym shows a

  A neutral atom alway1rk9kdz eyi8+21r shbs has

  An atom has more electrons than protons. 1i2rs+af(c qgThe atom is

  Materials in which the electrons are b1ht fy7co3 grj.73gvo ound very tightly to the nuclei are referred toogvt3yrgj 7o73f 1.ch as

  Materials in which the epjp 2v) jb.n;rlectrons are bound very loosely to the nuclei and can move about freely within the material are referred to rv ;pb p.nj)2jas

  A negatively charged rod is broughs0/ d)u+os)h6ft(jsnc )qzl qt near one end of an uncharged metal bar. The )hs)0+scj/q qzsn( )tdufl6oend of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive chidwx04ceg+y(x/ukcno9 k .9 ,mhxjvngm+9g, arge, and sphere B is neutral. They are placed gxnj0hvx c9ykm nik,umxgcgw+eo+4 ,9 d/.9( near 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 electroscope positivel ib94qxx +oh1vw-0lyay1opd7y?

  An originally neutral electroscope is briefly touchl af1 8zu4kod2ed with a positively charged 8zual4df2k1 oglass rod. The electroscope

  An originally neutral electroscope is groun: dc v ogly,:3d*i/lxpded briefly while a positively charged glass rod is held near it. Aft ,i/yx3l pdc:ol:vd *ger the glass rod is removed, the electroscope

  A positive object touc ,x:v gv2m4;8ahkgrly hes a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but dogmgxv:k4lh,8 y2 ;rvaes not touch it. What happens to the leaves?

  A large negatively charged object is placed on an iw6j3oe9x;*p*3 d;gb ei zy fbinsulated 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 rolls forward, but does not touch the negative object. At no time does either baz9 bf i b*oipj*e33eg;6 y;dxwll touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb k3mn(:m10a g vjk8s dhconstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first c63(hx)g3 rg vvo 3cdtt6f hi.h,b;eju harge is larger in magnitude than tt)hud3h ig.;6hrbv3o ef, xcv(6jg 3the second charge.

  Sphere A carries a net charge and sphere B is neutrgti3b5nipvtv-9 vyd gm* t(r :p /5d,ral. They are placed near each other on an insulated table. Whi:- * gr5d t,y 9vpbdmitrvgv5(3 pnit/ch statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. ;bqp xk8 fk- :xd/t;8di3hhh bIf the charges on both object ;q8hb-8/k3:;t bpxhd difkh xs are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces yzu92f872imauo. uwzrifp7 , of F on each other. If the charges are separated by a distance of d/3, whzyo9 z r2f uf2,m8uiaw.pu7i7at are the new mutual forces?

  Two charged objects attract each other with a force F. What happens q 7z79jn;tlmkzwd;wn,(s bn* to the force betwe w7d9( , knt;zq;ln7nm jw*sbzen them if one charge is doubled, the other charge 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 separa* j(bb7*t jy pisw6h1vted by a distance of 1.0 m. What happens to the mpwv b6 17ib s**yhjt(jagnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a protow;y 8zh py/0 prf-:wfgn are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electro8g rw0 :phypf/;y-zfw n is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 mb4iby s:)nu5uqm(q f( . What happens to the size of the force on the proton if the electron is move(f) ibyb(5nq:uqs4mu d 0.50 m closer to the proton?

  A point charge of +Q is placed atj 5k0rg 2dz xjk).wq5r the center of a 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 charge at the square's center. Now, identical charges of -Q are placed at the other three corners of the square. What is the magni dkwjx )qgjkr0.5r52ztude 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 triang q q2:6v :i)qdelrohl)le. 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 )qerq q:: 6ioldh2v)l the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is nokcs,e+sf22g z t a vector?

  At twice the distance from a point charge, the strength o0t*6i:lnvzj y 3-i) 2ar nghytg m8n cialy;70f the electric field

  Is it possible to have a zero electric field jr0vs9 lg.t; afs;gxx - m1x3yvalue between a negative and positive charge along the line joining t9;xvts-;x3 jga0g.x1 fsyr lmhe two charges?

  Is it possible to have a zero electric field value between tw tp+lnf20 j,hmo positive charges along the line jtpln2h0+ ,fmjoining the two charges?

  Electric field lines near psitive point chlt(p 5rr:2p.xht g1 abarges

  The electric field shown2 :fqd6ad*a4 ;n5jxu -mrqkna

  Can electric field lines in.3+afeh6rh hqtersect in free space?

  A solid block of metal in electrostatic equilibrium is place/cvq f c-ifg+,d in a uniform electric field. Give ccq- /,+ivf gfa statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each g/j aia gr06r1fba:tk pe,o 7;6yzrqo4iven the same charge, the electric field (E) midrqoefj y,ktr7aaa;zpib: r01 /46o 6 gway between the center and the surface is

  A cubic block of alumi5l.cy7(0orsl 1;5a bc bc div9 gty+mrnum rests on a wooden table in a region where a uniform electric field is directed straight upwl(m cr5cb;s cy 09oita7g5 1 +dbvy.lrard. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elsz-eh9e ),zfgectric charge

  A positive point charge is enclxrupdodx6/5 m,c 5m,w osed in a hollow metallic sphere that is grounded. As compared to the cas up6m xwrc/ 5od5,d,mxe without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stat3d(c *21jt oqaugwsb4ic equilibrium.

State Gauss's law.

  The charge carried by one electro kt.t 4-me* sn-v88 qgeoacujl4. ng(en 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 cw2vbb, g:8te ))cm oka net charge of +2.00 mC. How many more protons than electr t:2bce)kcbw,)8m gvoons does this piece of plastic have?

  What is the charge on 1 kg of p f6 *xa,+h3p a8yqokh s2tup9orotons?

  An atomic nucleus has a ifg./iuxm k*r 1s1c w(f6caa ,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 2.0 and -4.0 mC, l73 qx4h-rpbe+i5xa a respectively. What is the magnitude of the electric for x l7h3eaapirxq-+4 b5ce between them?

  A 1.0-C charge is 15 m from a secondxr 8.ggs7u 2pp charge, and the force between them is 1.0 N. What is the magnitude of the second chargp7 ursggx .82pe?

  Two 1.0-C charges have a force between them of 1.0 N. l i get 0mshibsw8tc(r9u-/1i *()xye How far apart are they?

  The force between a 7jh8yv sdtvc3i, 3dl,$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienceg3* pil0q muie5t2f*y a 1.0-N force. If they are moved to a new separation o0fty3*u gle*m5 2ip iqf 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on +w*r .m;sghiothe 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 m +*; orhi.gwmsagnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are l;)g1qut7 w6wr8;gqz hnx(xf placed on the 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 directiox7 r;g8)6(x 1qnzughlqww ft; n of the electrostatic force which acts on the charge at the origin?

  Three point charges are locattf6r)10e; t-;a/ dua lptczfned 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 th;p t6c / zt r1net)auff-l;d0ae force on the 3.00-mC charge?

  A point charge of +Q ink7dx9sg )jl. s placed at the center of a square, and a second point charge of -Q is placed at the upper-left cornernd.7x j)lg9 sk. 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 third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m*+dean qu9. up, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 9*q.pdueuan+5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, rq/sdlj g4r5/9q ) ter0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the diq 9lr5 qgrs/re t/jd4)rection of the net force on the 5.0 nC charge?

  Three identical charges of 58qnk+ i+a zqvwiqbf/ t)( +ul3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on i qk5)ani zuwq(8q+/+fl+ bvta side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +-jhn0 yo.n9. hdf 5eivQ and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electr d. hih noe.0v95n-jfyostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is xvxs c7j41o +eat x = 4.0 m. Where on the x-axis +4xsc7oex 1jv can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at thm;ed mmgq-r 4i92k;l. ,td qdte origin and charge -q is placed at x = 2a. Where can a third q; . 2dd-r4iml tgmqd,te;mk9positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of a8kyw-zc/ld 9 $4.0 \times 10^{12} \; electrons$ 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 the attraction of a fixn 6ybeo+u-/ lbed proton some disl-uyo6n+be b /tance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a coh1 o;sw,g.p hvg ; ;/nnmcwu:ammon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the anv auwgow; , g ;nm;h.:1cphsn/gle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40ovp8vm7+o65eh jfj4t8s op f(t dr.;z e. What is the magnitude of the electric field at a distance of 1.0;mo5(ffzt4pod h8 s + jro8 vvjt67ep. m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.5e qtmf*+s; 3a f5ipe+o0 m from a 50.0-nC charq + +esf*3aioft;p5m ege?

  A 5.0-C charge is 10 m from a small test charge. What is t)h7 0fkvm fe(j avu.t5he magnitude of the electric field at th j)kthe75. m( uafvv0fe location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction om 3ra*v* ( zwnwuap7;tqf,sm 7f the electric v,*namqw3 trfw(as7 m 7zup;*field?

  A 5.0-C charge is 10 m from a small test chpc2/9 jnojv 3jarge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of to /n3j29vjjp che test charge?

  Two point charges each have a value of 3.0 C and are separ iqkbx)31,jo( kzkjrj z,hk) 8ptn*th4 au6d3 ated by a distance of 4.0 m. What is the electric field at a point midway bethb ,x)qu8z4 khokdtra3) jt6zp n3 (k ijk,1j*ween the two charges?

  A 5.0-mC charge is placed at thx ao e+jvy0d 4u)e,u2ie 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is ovx4 ueui, )2e0jd+a ythe electric field at the 30 cm mark?

  A 5.0-mC charge is ply*qm-x 0 wfl)aaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the eqxf -y l)0*mawlectric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = +s dt v6wmhraq5mju ak 741a/w,y(jn3 0.20 m. What is the ma+d4mtn 1 3j6um5 /s ar(w,jakywh7vaqgnitude of the electric field at the point midway between them?

  Three 3.0 mC charges,5 rtk sgpq)iy) 9:mrd are at the three corners of a square of side 0.50 m. The last co )rs ): 9kr,dgmtyqpi5rner is occupied 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 cornerso.yv 4nm5rp96ttkfu 8 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 eleu myvktf84nt r95 op6.ctric field at the square's center?

  A force of 10 N acts 9ebdmiw583thi-k64pe:wn qh on a charge of 5.0 mC when it is placed in a uniform electric field. Wha6ebip- q4:kwm5e w d ith8n93ht is the magnitude of this electric field?

  A particle with a charge os2 z :apb4k:luf 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 plac3yt x2(a (duh:m,4fbyiz;y4v qmwtc 8ed in an electric field of 6000 N/C pointing downw;3xc dt wzqbfv( a44:uyhm2m( yyi,t8ard. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carwzw.xa hcay ji6 4rr;(c6l */vries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is sa/ca w *6i x.6lcjwh y;4rvr(zuspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What isg01 dygdurx)y35tr r( the magnitude of the electric field 5.0 cm from the sphed( dr3yyt1grr5xug 0)re's surface?

  A metal sphere of radius 2.0 cm ic61:t pe5*7pxpdq; n) qwqb icarries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sph 6:ptpe qiq)p*bd; 7wc q1nix5ere?