State the law of conservation of electric charge.toom43zb+ysi8y 1e;j

  Is it possible for two negative charh1 jbo(dps;t+ges to attract each other?

  Is it possible for a pof x ; pld3 fp,tvg,,*vg/4szupjoz3j,sitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silhfi -.qny e(g3k. During the process the glass rod acqn3h.g- feq (yiuires a positive charge and the silk

  A proton carries a

  The model of the ato099gw di6a yvtm shows a

  A neutral atom alwaysytm9 i 0g1h,m-rr. 8f cjfjv/s has

  An atom has more electrons than protons. The atom isc/q:s- b+ zg syhwr2:d

  Materials in which thetle9n fg5pm*h+ z3p. j;*ltqw1(by ps electrons are bound very tightly to the nuclei are referred t +qp1*smt9 hen y* .(;l3gltp wj5fpzbo as

  Materials in which the electrfn7wy;c9i l8m )4v uh3s+ljzpons are bound very loosely to the nuclei and can move about7ulvzsiy+3pfnl ; 8 c9w) mh4j freely within the material are referred to as

  A negatively charged rod is brought near one end of anoow3e 9 3db-ns uncharged metal bar. The end of the metal bar farthest from theb3-deo9w s on3 charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pn emkkz9i7ol k )f -/ ndcoo*ab:s.h.0x.a 6falaced near each other on an insulated table. Sphere B is briefl. . k:o zf)naoe* k096fskal.ahxn/7o cdm-iby touched with a wire that is grounded. Which statement is correct?

  How can a negatively charge h,d( ke s7gx56a.jcqr)cst qpc5e.h,d rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chan c02b cnh sn+e6 pk-gg :y4qwut.q84yrged glass q4g -4 g0pb6yeyu n.2k8n:cqwsn +hctrod. The electroscope

  An originally neutral electroscope is grounded briefly while a po x2)jnsb6qhc9 sitively charged glass rod is held near it. After the glass rod is remov9q2n 6jxh)cbs ed, the electroscope

  A positive object touches a neutral e6stvg,.d* n3pg8ix91vy m*wujpsar8 lectroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Whatpi1 3 xnv*6 .us ad v8pgwj9r,*8gytsm happens to the leaves?

  A large negatively charged object is placed on an insulateq 3+c;x .q j4qfh)riwod 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 ;jqwhq+. )xi34c qrfo 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 coiy*: n+kgaw ,7vj g5ocnstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is lya-pp8/oi /nuarger in magnitude than the second ch8/ui n ypo-p/aarge.

  Sphere A carries a net charge and sphere B is neutral. They are place06mh f, ik) tm0( zllsirg,b5hd near each other on an insulated table. Which statement best describes the h zgks)0 lfmir,l 6bm(0 i,ht5electrostatic force between them?

  Two charged objects attr;a85zuevn5 bwsdd2oc. yi1) ract each other with a certain force. If the charges on both objects are doubled.eya8 d 5d2 vru;ic)bo51n szw with no change in separation, the force between them

  Two charges are separated byn;sd(4rr 6klm a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, k6r4l dr (nm;swhat are the new mutual forces?

  Two charged objects attract each oth5r3om*ahe h oyd*5pq b3ul. l;er with a force F. What happens to the force between them if one charge is doubled, hu*b;rld 3 3 aqhmyo*.l5ep5o 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 separated by a dis 02bc v-vppj6wtance of 1.0 m. What happens to the magnitude of the force on the proton if 2jpb-pv cvw06 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 happens ,bz+.vte,j ww j+y l:oto the magnitude of the force on the first electron if a second electron is placed next tbv.j+z t, :e,+lw yjowo the proton?

  An electron and a proton are separated by am :)s d52fwbiuwf*yy+7e4dpj distance of 1.0 m. What happens to the size of f)4yd5yif:jpwsdb +*ue2w7m the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at tp s8mz5-om.v ghe 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 .ms8-5mvgpzo 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 centgefpa: 7luiid85 yi9 0uek:,mroid of an equilateral triangle. When a second charge of +Q is pl5 yl7 89ifea0u, k::i meuidpgaced 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 the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is nj:(+txi4 yn4stj1 h7aep6 kcwfk, 1ibot a vector?

  At twice the distance from a point charge, the strength of the electric fiel15uwp:ko vmk 7d

  Is it possible to have a zero eleif(k qvzehi z-8 wv(dj*8*xh uy1 i-i2ctric field value between a negative and positive charge along the line joining the two chai*id(-v-v z21 jh f ik*88ehwzyu(i qxrges?

  Is it possible to have a zero electric field value between two positive charges a-m8qt u -nku m* o4lzb9 l;aej-nn09talong the line joining the two chargesz-a -no9* eulb;9k-qtnlj a08t4 mmn u?

  Electric field lines near psitive point chargw/oohac(53x )g 1hdrses

  The electric field shsder +nf.vq+)at fp) :own

  Can electric field lines intersect in free space? sq5 2.xf2c fzs5(twx3) ygmps

  A solid block of metal in electrostatic equilibrium is placed g fuc0 7k *ujtltd*ukf2;p 38din a uniform electric field. Give a statement concerning the electric field in the bll870ujkdu3; *2u cfdtgfktp* ock's interior.

  If a solid metal sphere and a hollow metal6.xzlr zjblh.ka3s 6g r e69/x sphere of equal diameters are each given the same charge, the electric field (E) midway between the a/jkxxr ze36slbz.r 9h6.l 6gcenter and the surface is

  A cubic block of aluminum rests on a wooden table in a region where azi g-b q;d7f2 zhg h,gtg0.;nd)o.jyr uniform electric field is directed straight upward. What can be thghg0gf7-o)rd ;zq.,n ygz.; j 2id bsaid concerning the charge on the block's top surface?

  If a conductor is in e +u o.nswg7x vun8w*d+ej: ;iulectrostatic equilibrium near an electric charge

  A positive point charej, v/k2ha-1 tdpxad)ge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the h/,h1)tdav- xapjd2 ek ollow sphere has

State three properties o enb+.5j+h foxhs dgz.6z;i1lf conductors in static equilibrium.

State Gauss's law.

  The charge carried by ondjm 7rvb *dncxi4w-+/ e 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 +2.00 mC. How many mox2 r3ktrwq;am4 2d j(lre protons than electrr dl (qx2jtm4r32w;kaons does this piece of plastic have?

  What is the charge on 1 kg of protons?/( ojq u( tuiqz4qd8a+

  An atomic nucleus has a charcnon(1estyph3o c6z l4 1e5 r0ge 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 cha8y.eu c -tdgr) 4ib2iitf2zy4rge values of 2.0 and -4.0 mC, respectively. What is the ma4bt- i28y4)e zdy ugtic.2ifrgnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charg 4roz3d38d vive, and the force between them is 1.0 N. What i8d4rv ozdv33is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N.gq(1b43k+daju y7yvx How far apart are they?

  The force between a .w(mb 7- vvvtm bgdu2h2z45vi$30 \; mC$ 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. fqtu,h+r9 w.oIf they are moved to a neh9oft .uq+,r ww separation of 8.0 cm, what is the electric force between them?

  Three identical point charg a8pr8tgs qn2n7*+ mxwes of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right w* mn8xraqg+t 27n ps8at 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 pnvff ) ;(yvt (e95wldpar(6sxlaced 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 magnitudes(a;lypw 6 f)f(d9nv (x rtv5e and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC hh5 syz.)tf052r vtkc at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the ma5h 5vstk0yth fz2r.c)gnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at thes) bb3gvy+uq,zs z *hm*s al3:ikh)e3 center of a square, and a second point chash:y3gm )b,3uav s+ bk qhlsziez*3)*rge 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 third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.36x-qc+ q2cjcgefn5zl fv :e990 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0- nc cj9:q5 gl9fv2eq+6zcxef , 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 xw 6cw wp 6n,vjutua:d+( *wc,yn; a,gm, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What w,ptw ;cn6:y , wuw+6,cx advagn u*j(is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 :.ugf )qakl z0mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electro) zqga .ukf:0lstatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. Attsm/ 71 3vmp 8t fg-i6fhqqvv2 what point, on a line between the two charges, would it be possible to place a chargpvq7v8 g2qsf13 m-/ftthv6mie 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 c2t v19bs /(fobfkd od2* *wfrat x = 4.0 m. Where on the x-axis can a third charge be placetobwd1cfdfr sf2/ (b o**29vkd so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is plac3/3 tc,svyan:myqn56n y jrr ;ed at x = 2a. Where can a third positive charge +q be placed so that the yq ,5 y anc3v3n:sj r;/mnyr6tforce on it is zero?

  A copper penny has a mas +rffve s qbu3j 0;esy,6r8r3js of 3.0 g. 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 o9 cc;dztd91 q: c4tccgejds9 5ek* e0yf gravity by the attraction of a fixed proton some distance above it. Ho je ed:q9ys ckdc9c9c510edt*c;zg4t w far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconh o5i4 jip6e; n(umb6s3bu e4dducting threads which are 30 cm long. Both are given identiu6h m43 6bdo5 s(u;bejpn4 eiical 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 magnitude of 8ne/fe vwy(8 kthe electric field at a distance of 1.0 m from yn 8ew /(k8fevthe nucleus?

  What are the magnitudtp6v ovcsj4;q vblz291 nd(e6e and direction of the electric field at a distance of 1.50 m from a 50.0-nC cszc (9vv 1l2 qdpe;4n6 bvj6toharge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the 8/ t dvo3a7of,x (s6* iyjgtvzelezjoxogt/ia83 fdy v sv67*(t, ctric field at the location of the test charge?

  A 5.0-C charge is 10 m from a smallwo /qto5;o ,3(zoofg ldp;ct . test charge. What is the direction of the electric field?/zqtloct;.o5ood, ;g(3 pofw

  A 5.0-C charge is 10 m from a small test charge. What is the magn+-,lmavz e y-iognl swu2:z:3itude of the force experienced by a 1.0 nC charge placed at the location of the tvln-swo-u+g l3y z:2, ezmi:aest charge?

  Two point charges each have a value of 3.0 C and are separated by nqbr-*h* yyx8oymj +(a distance of 4.0 m. What is the electric field at a point midway between the twyxr-* hyjn*(+qm8oy bo charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chdty3g /kye: g3arge is placed at the 50 cm mark. What is the electric fieldegyk33:tg/dy 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 mC chargeq5u-fel,og 7) kec9x vm 1ci7b is placed at the 50 cm mark. At what point on a line joining tq)g 1e-olxbfi u5vc7 79c,kmehe two charges is the electric field zero?

  Two point charges of +3.0 mC and -n.rql9lsjsp5 l;d 0a .7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electjq5a plnl s09s. .;rdlric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. f7y) v o1u3f(ezj. se.jhs d*vThe last corner is occupied by a -3.0 mC charge. Find the electricfzv.ej*f. 37j se duoshy) (1v field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are pl:6pgyr 8fu,7ot a v)1m(pwmv saced at the corners oos,a)yugp1 vr6f :wpv7m8( tmf 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 the square's center?

  A force of 10 N acts on a c9);xjvsvl0f-;cn b f;y*e lggharge of 5.0 mC when it is placed in a uniform electric fiel *n;0 g-g;fl) bs;yv9xec vfjld. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mCg,jef daalat/w;6 5go5zwt(6 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 w1-j 7egeu9i8 uq*qo 87n mbabfo9t2ian electric field of 6000 N/C pointingmuqt8bq9 27bjg w9n*1 i-8eaeof u7 io downward. What charge must 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 baa5z7u 3x ify0q(-d8 bbtuw0izll is placed inside a uniform elect bz(fib-xdz 80ta w05yiqu3u7ric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius bb.pzsl g1-uze2, w; 2fklon 110 cm carries a charge of +2.0 mC. What is the magnitude of the electric f,nzfks .wl zo 1pulb;b-2e2g1ield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm 4xx)xh4f.xlfa- kt:scarries a charge of 3.0 mC. What is the electric field 6.0 cm fax4kf-fth.)4 ls x:xxrom the center of the sphere?