State the law of conservatio9m 19uziaiff,n of electric charge.

  Is it possible for two negative charges to -o,3;o5 cq0snbbh pi1rse2 fmgvzck,.i 8q5h attract each other?

  Is it possible for a positive and a negrina+jb+* lu6ative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rodsk:w, v5p fqp5 acquires a pow5qv: sp f,p5ksitive charge and the silk

  A proton carries a

  The model of the atom sh kaw*cto+ -p.sgi9df)0 u nlu-ows a

  A neutral atom always h wh2:cxy u5 yrtb-l.p;as

  An atom has more electrons than protons. Thj 1 vux1elv z;n5;nxo- cpx*y*e atom is

  Materials in which the electronsqpyfu)z+21qztd.3 dv are bound very tightly to the nuclei are referred to afz1)ydz2t d+p uq3.vqs

  Materials in which the electrons are bound very loosely to the nuclei and c wr3hqy :8ozq1an move about freely within the material are referred towz8r 1y :3qohq as

  A negatively charged rod 4j0eh +pfwx -hki97j)oyfy6p is brought near one end of an uncharged metal bar. The end of the metal bar farthest fx9)fok-pp iwh4 jj7yy60+e hf rom the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pxm4(zpdo 6.z.z clg +ylaced near each other on an insulated table. Sphere B is briefly touched with a wire that g.zd p +mcoxylz4z6(. is grounded. Which statement is correct?

  How can a negatively 6 t+ryaj,a5v4b,iop h charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivjhz50tb-kq:nq 2 al,aely charged glass q :baqzh2t5j ,k-al n0rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positivdm4lh6 wyb il;5hw8eouks 0)(ely charged glass rod is held near it. After the glass rod is removed, thy)l6bs l8 0hwek5; uw(mhi4ode electroscope

  A positive object touches a neutral electrxrg *)-ogt nv+t tc6/mcmw54toscope, and the leaves separate. Then a negative object is brought near the electroscope,)*gc t+ rxtwmnc5g 4/tv6mto - but does not touch it. What happens to the leaves?

  A large negatively chigo)x23*n 9a g /onwymarged object is placed on an insulated table. A neutral metallic ball rolls straight toward thwo3/ *yagnom)i gx9n2 e 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(kdbma/, hx9 n the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The bz wxcf35j v2)first charge is larger in magnitude than the second z)v 5wb2xjf c3charge.

  Sphere A carries a net charge and sphere B 6 cb9* ba9wordis neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between themwc adb6br9 9*o?

  Two charged objects attract each other with a certain force. czbh. k9+cwm9 If the charges on both objzc cw9h b9m.+kects are doubled with no change in separation, the force between them

  Two charges are separated by a distancj9 k )d3blay/d k/1lrfe d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of dlkka 3/ jbl 1)9/rdydf/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to6hgs6 hx2c vk3 the force between them if one charge is doubled, the other charge is tripled, and the separation h2 hv3xkg66csdistance 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 8h94 rp8nubg a0v+ 0z is4gplbhappens to the magnitude of the 94u bggl4i8snzah+r0pbvp 80force 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 happe 97 mx7fs6obdi5w( eaens to the magnitude of the force on the first electron77ed(f9ib5s 6 ae oxwm if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happefir y:ji/ )c4x+ab9izns to the size of the force on the proton if the electron is moved 0.50 m closer to4/c:yaxzi +iib )9 rjf the proton?

  A point charge of +Q is place4t( zet+zg ni.d at 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 magnitude of the net electrostatic force acting on the positive charge at the center of th.tz+gtn ze(i4 e square?

  A point charge of +Q is placed at the centroid of an e cj x 5.err*/kkk)*wrwquilateral triangle. When a second charge of +Q is placed at one of the triangle's vertc/ rw5kr. *ekr kw)j*xices, 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 notu(w-w s+,vzrhw(lf5 x a vector?

  At twice the distanc + e))rtz9rk(0o yn-o218 ljqunb aypfe from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and posi :yo cank( jg3y9ezgmz27*)ietive charge along the line joining the oa ):jz y n9yek7zm*(ggc3e2itwo charges?

  Is it possible to hav :rx k9b. 9fwb(*adrnje a zero electric field value between two positive charges along the line joining the xk9wb b(9nr :rj.*f adtwo charges?

  Electric field lines near psitive poinwh r4x;ub k0b-t charges

  The electric field shownw)j6 nad: f)hbq 0la*.fa/rsc

  Can electric field lines)l,mgdi7f x4m intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform emchg 4 4hw+)xnowa,17i9 pchelectric field. Give a statement con4i ghepc1n,9 mh7+w xco)hw4 acerning the electric field in the block's interior.

  If a solid metal spher:1o pv 0uj+aece and a hollow metal sphere of equal diameters are each given the same charge, the electrou 1p+:cv0e ajic field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform e+me*o,zl a+xe lectric field is directed straight upward. What,z xo+eme a*+l can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibr f+pmx8*2v5 cu2lnw zkium near an electric charge

  A positive point charge is enclosed i urb52 )rka4 i9bowq ganq(h87sap 3w/n a hollow metallic sphere that is grounded. w2rag s3kqiqn5ba4w u a 97p(r/8obh) As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of nk/ *9qg(ckiwconductors in static equilibrium.

State Gauss's law.

  The charge carried by one e rup *b/ ar+jhb+;1j-a t7cyeolectron 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 +ly/lnynfu7 a //l47,g xda au/2.00 mC. How many more protons than electrons does this pi 7/ ul/x d/ ylfa4,ngyla7n/uaece of plastic have?

  What is the charge orud ;jo; 2l/h *u/lphxn 1 kg of protons?

  An atomic nucleus has a charge of gkjt8r lmk)ew;0: a7i $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, hav: o.8dm ioyk,ke charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between theoim8y.,k:ko dm?

  A 1.0-C charge is 15 m from a second charge, and the hl74mryi a m-7force between them is 1.0 N. What is the magnitude of the second ail-mmh 747rycharge?

  Two 1.0-C charges have a force between them of lfs6w0f9ec +k 1.0 N. How far apart are they?

  The force between a )gl)(j1tho h;v c p 44 t5wcxbg3/icfo$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experi8 lef )e-0anlc/ jkp0.x7bnwhence a 1.0-N force. If they are moved to a hwl7 /. blx8e0c-nfnjeka)p 0 new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on thez5z/tsn7mr :4qzvzt 7 x-axis. The first charge is at the origin, the second to the rin 7/7:v zsqrz ztm54tzght 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 p.v 1bztd 7,: arca)th 5iftx6alaced 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 magnitu1 thx5 a7a,.bz :fittd6 )cvrade and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following posiv-h5st1-ti yc(6urq;re kv 1 gtions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x =1-1;kit ucs-hr5 qgryvv(6 te 0; Q3 = -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 placed at the cent bvyx2arr i:o 5i5b 60fn/oxb+er 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 magnitude of the force that acts on the center charge if a third charge of -Q is pla0br2 nb: xa6fbiorv+/x55 yio ced at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.8v/aaj9 m dcf t1p .wr43g ca(br0)kiw10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the f4ba 8r )1 tr0 a/cdai9w(gwp3jmc kv.net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); *obecav 1y m+r-ve 8/uQ2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). W ao eyv cb+8v*-re1/muhat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilate+mu)pryl :/+o uh e ghay1r0)hral triangle which measures 30 cm on a side. What is the magnioyrr) hl hhe1pm/yg+:ua)u0 +tude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +r12/tl 9vjgbz2im(nlc,g8 rrQ and +4Q, which are separated by 3.0 m. At what point, on a line mnr2(r9 gv licztb8grj1,/2lbetween 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 is at , ;jrtmly4.:rjt ywv:x = 4.0 m. Where on the x-axis can a r4,j;wrv j.:tl :tm yythird charge be placed so the net force on it is zero?

  Charge +2q is placed a dn xat96lib4qzwc.0szt -3v1t the origin and charge -q is placed at x = 2a. Where can a third positiv4bxnc6 z3- wtd qav0t.1zsl9ie charge +q be placed so that the force on it is zero?

  A copper penny has a mass ofy1 o: 4nc b)ntthpryp8nlr5b6 ee1+bm f/3+ui 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 of gravity by the attraction of a sj*0pv q,2;fsc kn7mhfixed prot,knm2s c fvh s*j;0qp7on some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spherealqq,ui 44;w ,xxa.ua6fpynpw sy :82s are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle be niu quy464,ps; ,8w pxylawa q:a.f2xtween the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is edi n8;f*.zoo the magnitude of the electric field at a distance of 1.0 m from; fon. e*z8iod the nucleus?

  What are the magnitude and directiosolau01* ga;j5jkw s88 s4 sxftd*yj1n of the electric field at a distance of 1.50 m froskds4 8ao1y0lwsgtf;j*5 a* s8j u j1xm a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is th9wz,cl 0b9 vybe magnitude of the electric field at the location of thzc ,bw v9ly90be test charge?

  A 5.0-C charge is 10 m from af/pum4gut 2 utr ;.hz) small test charge. What is the direction of the electr fu m)tzgu42ph;tu r/.ic field?

  A 5.0-C charge is 10 m from a small test charge. What is the mag;sjh2 (xdv 6e)anico: x-p:zh nitude of the force experienced by a 1.0 nC charge plachds26ioc (: je-)a:xzx nhp ;ved at the location of the test charge?

  Two point charges each have yx +ayreqb :h q8bp z5h*/a/g2a value of 3.0 C and are separated by a distance of 4.0 m. What is the electbq aa*:qgx h2e/pb/ yr5h yz+8ric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 r1g,v 6, .dwi k-vrvws; (xkyrmC charge is placed at the 50 cm mark. What is the elrgr yv( k-w vi;s,kxw dv6.1r,ectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of4sqg-1 xiysu7x1xk7 k a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on ay-q1 xsg7uk4si17 xxk 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 9 b-.4pq veh+ i sb0gt;rlvpl*x = 0.20 m. What is the magnitude of thelbe4v*;v i-pbtp 0 rhgql9.+s electric field at the point midway between them?

  Three 3.0 mC charges arx xx a.. xthw;)exwyolyu,835 e at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field atwoltexxux hyx,.)w ax.;3 58y the center of the square.

  Consider a square which is 1.0 m ps j1+bx1do0y 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 jbx10+s1ody pthe magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when:+a8 ,sd;wplv1, nugix4 mh up h39gha it is placed in a uniform electric field. What is the magnitude of this electr umw839dans4laxgp;hv+, , ughp:ih 1ic field?

  A particle with a charge of ws9ei7bzl.(i5pspllc3 l 9 -x4.0 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 electrfpcq*vm j0.vo7xe* 7cic field of 6000 N/C pointing downward. What charge must be placed on the x770 . *covqfec jp*vmball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is .pqa 7vr8j2 lzplaced inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of theja8pzlvq.72r electric field?

  A metal sphere of radius 10 cm carries dvlq9gast 4rvcu hb9,f3 73y6 a charge of +2.0 mC. What is the magnitude bg yucsh9 vq3 l3v6ta7drf4,9 of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a ch5(h jm insfrk3d -hq3:1rsam- arge of 3.0 mC. What is the electric field 6.0 cm frha -f r3srdm 5m1:-(hqkj isn3om the center of the sphere?