State the law of con -ds mbkalq.,hnzy8 86servation of electric charge.

  Is it possible for two negative charges to attra*fdgk) f ca.o+ct each other?

  Is it possible for a positive and a negative cha4y f,qe;n8 l6ro qcts1rge to attract each other?

  A glass rod is rubbed with vmdn9p; xt0-i2 vm3 bua piece of silk. During the process the glass rod acquires a pos9-v2i0xmu dn m3vb tp;itive charge and the silk

  A proton carries a

  The model of the atom show;sbf**rb /2ga1txhg fs a

  A neutral atom always ho*lw ;q(*e uqqzkv3jp+:n m.t as

  An atom has more electrons tha88cbx,i)m5od0 -h j vqpejx-un protons. The atom is

  Materials in which the electrons are bound very tightly to the nucleb4 )i x0)qpewni are referred tbpx e) 40)iqwno as

  Materials in which the electrons are bound verrsfp29 6:xr eng wo l:v/gh-5ry loosely to the nuclei and can move about freely within the material areghno6levs/ 5rw 9r2pgx- :rf: referred to as

  A negatively charged rod is brought near one end of a 2 saqywc:0 ib,s)t+izn uncharged metal bar. The end of the metal bar farthest from the charged rod will bbqytas,2cz w:)i+ 0 ise charged

  Sphere A carries a net posit t/sc4ksus62kive charge, and sphere B is neutral. They are placed 26/stc 4uksksnear 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 chargeq l*c v/cjkw26d rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivelynf9:,id1s v 1h pml;ut4sfhe0 0auj 3y charged glass rod. The electroscaunvy ;p,04 hf 0me93fdsslu :j11tih ope

  An originally neutral electroscope is grounded briefly while a poo8 foy8d: tq;esitively charged gd88ofty ;q oe:lass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutr 5+34z(z)8rys pwe 5pdvff sm5rzz9fcal electroscope, and the leaves separate. Then a negative object is brought near the rz3s +psfzpm 5)f4dw zvf89ycr5e( z5electroscope, but does not touch it. What happens to the leaves?

  A large negatively chad +vh1*a ed-:molt1-v w bqr,zrged object is placed on an insulated 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 either1t-b -m :l+hdw1 edvq ,vaozr* ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomjw0:1bws(gs sva-wa1b constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thpch4 s vnlq3dl -i:(v0e first charge is larger in magnituhnd0l:- vlp(4i q3sc vde than the second charge.

  Sphere A carries a net charge and sphere B is neutral. The3*awe4s zkt- r:.,pn vtspa7hy are placed near each other on an insulated table. Wh.h -z*a3,rnt :kessvp7tp wa4 ich statement best describes the electrostatic force between them?

  Two charged objects attract each other with a ce f lv ,gc(7zved6w.il5,m6g ykrtain force. If the charges on both objects are doubled with no change in separation, the force be66gv, zfl vedkgyl c(wi 5m.7,tween them

  Two charges are separahi 8mft0se0-bb ib/8wted by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, wha sbb/f8ih0t-b imw8e 0t are the new mutual forces?

  Two charged objects attract each other with a force F. What hg) 7 k;hfqg 7s;6 y:unam/mfxeappens to the force betwf;:6 7mkng);u7feq/ygs ahmx een 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,8,p6ee djc )3 nexlem are separated by a distance of 1.0 m. What happens to the magnitude of the force on m6eld x8pn )ce eej,,3the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.5pf) z 6vy4dix0 m. What happens to the magnitude of the force on the first electron if a seconz y6x4dvp) fi5d electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Why)h+ h*9+kmk 9h)filirk(c5a vra o3qat happens to the size of the forc)h+3ra raf+ khiy9*k hlmcvio)9q5(ke on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a c:v-8 v;l)p xee ghodk 1w50eusquare. When a second point charge of -Q is placed at one of the squa8) gvwp;euxk0eo1 5e:dhv cl-re'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 the square?

  A point charge of +Q is placed at the centroid of an eq3t7+a(v1 5 bn-tdtggo;qx unr uilateral 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 magnitude of the force that acts on the center charge due to a third charge of +Q placed at one of the other verticen+gb-1u3vgnt7d 5ro ;tt a(q xs?

  Which of the following is not a r1g n(jc*sqdk t+)kc-vector?

  At twice the distance from bc6c0f+wmk0j6(r(mch xq p7s2y6 abm a point charge, the strength of the electric field

  Is it possible to have a zero fnh8f2u,/g-vyqt*zw/dv12f-hy yyeelectric field value between a negative and positive charge along the lin /2ezfqfty8h wyvn fy--gu1/ *2vhyd ,e joining the two charges?

  Is it possible to have a zero electric field vku9g znq+r b2w6c7-xjalue between two positive charges along the liqukw+ b972cjg- r z6nxne joining the two charges?

  Electric field lines near)9xrg6dz41b f x bw,qc psitive point charges

  The electric field sh 9pob ,d1c w 04s9,orw/,ooreqkc(ov cown

  Can electric field lines i krwvml;cr+)9p 96ske ntersect in free space?

  A solid block of metal in el qgaj35fk+wd) .yghr .ectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the blqykhd r. 5g)j+g .w3faock's interior.

  If a solid metal sphere and a hollow metar w +b*dos apggv65*0btwd8e3 l sphere of equal diameters are each given thw6pts8do* evbgga0db +r 35w*e same charge, the electric 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 oo/5m,)i vayk electric field ivi,y/mo5) aoks directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in ele.kmc(4yx -gmn0iqm; 57c eme qctrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a y (w56rnvf y:o8lxgo.4fa p 5vhollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field y6 4 5:xy5 rov g(fawnovlf8.pat a point directly above the hollow sphere has

State three properties of conductors in static eq /au7p/- elohvuilibrium.

State Gauss's law.

  The charge carried by onyymfa6bz 28q n;3/gmke 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 more protons than xep )t, -cl4geelectrons doesee)4gx cpt l-, this piece of plastic have?

  What is the charge on 1 kg of protons8dzyupl. tjon-)vj-:?

  An atomic nucleus has a charge o1dtmn 31.molyha;l h4 me u0)jf $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated ap:m wg oikhog 56s3 8xf4+w5-buzr9iu.e:uw by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the mhu wogru94u3mxae fk g5:sw ibp6.w :+5-iz8oagnitude of the electric force between them?

  A 1.0-C charge is 15 m from naa- g31ui*izqwq ; *ta second charge, and the force between them is 1.0 N. What is the magniai;q 1u nt*qa3*w-g zitude of the second charge?

  Two 1.0-C charges havervpxytcp 2 3h*6xfb6uo(evnk 8n(3u m v1qk/* a force between them of 1.0 N. How far apart are they?

  The force between a r1y9dlnbj0/84 lj pf v5 y1govq g4zx3$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2)jrrk289gh glcy, sh ;.0 cm apart, experience a 1.0-N force. If they are moved to a nhh lygc2jr; 8ks ,9r)gew separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-apu.ya( 8qjg :f ;wjq /jud,fc:,shk dw1zg*g;xis. The first chaj *dhu ,; gg q kyj:u,8;d .w1jsgfpc(:fza/qwrge 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 ph/m13bw hz3 3xys.pgld q0y)claced 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 magn33ygw3m0zhc d s/ pq)1.yblhxitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positioa:,ek:l l35dw5pr atn ns: Q1 = 2.00 mC at x = 1.0k a3lw 5n ,taed:l5pr:0 m; Q2 = 3.00 mC at x = 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 plac cz 2pxj+pbxa+/eq3cts-6)ef ed at the center of a square, and a second point charge of -Q is placedjpqzsbcx p6/+2ce+ ae3-f)x t 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 (0.30x/e)l7 wga vc2vm r.4l m, 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 t7wc r .2/xmalv4)vlge he 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); -l b73ipos- qfvg2k o;2,fjv aQ3 = 5.0 nC is at (0, 0). What is the direction oq vogak p-7j3sv,l ofbf-2;i2 f the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the veb8 c.jh;nm r+vrtices of an equilateral triangle which measures 30 cm on a sn.r +;8vhmjbc ide. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separatendgpi b 6(;dp zzfd9/o)x4j *rd 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 electrostatic force acting on it i(4; zfd gnz9d/)dbor j*xp6 pwould be zero?

  A +3.0-C charge is at +a u )tepe*h tf11:kqgthe origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be plaktqgte)hu*1+p: 1f e aced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wherebopzk*kh/ (0r can a third positive charge +q be placedob*p/h( zkrk0 so that the force on it is zero?

  A copper penny has a7oreql /eetwjj:29x -ty)u-s mass 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 of grav/m( dxba5a;dvity by the attraction of a fixed proton some distance xd 5 m/;v(bdaaabove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung fe7g7/nc5qvzxhtk6 +arom a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces tex+ 776q khcv5aztg /nhem 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 ele,ubws 7iz0hz2-p sb*/du dhj t/zn4t0,h zc4tctric field at a distance of 1.0 m from the nucleus?0nd u /s 7s zh0 -jw2bhzht,4ut4tp,c*d ib/zz

  What are the magnitude and direction of the -vkt+h s tcz9nfy ya 0gmdc:xc,s(4*8electric field at a distance of 1.50 m f,sc h8* :(yda csnx4f t+kyzg-c9v0t mrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a bu. ay-wl/3 .i4uoyq/ pza-qzsmall test charge. What is the magnitude of the electric field at thewayb/./ 4.zoqz a3 uq-uy-pil location of the test charge?

  A 5.0-C charge is 10 m from a small)yo, cgp91r gmnhv 9g2 test charge. What is the direction of the eg orcp1,)9h yg9vg nm2lectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magn 1zca3xq,p)nva **bho itude of the force experienced by a 1.0 nC charge placed at the lozq,*ha )ocb*1a v3x pncation of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distan wwp1q eb*4f-zce of 4.0 m. What is the electric field at a point midway between the two char fb1 w4*zepqw-ges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter 5s/e5hsola, gstick and a -4.0 mC charge is placedh l,5o/gea5ss at the 50 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 stiihhq m5ns.- t0ck and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joinit m5qs. 0hh-ning the two charges is the electric field zero?

  Two point charges of +3.0 mC andwyx/ w vn*; nxe hby,:j4n++pp -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the p4w+p+x*e x y;jvb wnn:/npy,hoint midway between them?

  Three 3.0 mC charges are at7dzppp+b+ h6 srgaq73 the three corners of a square of side 0.50 m. The last corner is occq+zp6hs7ab3 p gpdr+7upied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square whia,h ;h1rotj 88wq6 eeach is 1.0 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 (1,6e1, aheqatrwo ;88 hj 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 charge of 5.0 mC when it is placed in a uniform elece(. 56efrmbecay3 ky( tric field. What is the magnitude of this elee6yby.m3 acf5ere( ( kctric field?

  A particle with a charge oo-lhfy:x f3dlah 9,bk: c 66 n;.zndfff 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 a iuj cfd.i0ldi48l70l n electric field of 6000 N/C pointing downward. What charge must be placed on the ball fo0.l0 dlui7jfidc4 8ilr it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The5/pqb.v.y v1ikr72x /it cmsr ball is placed inside a uniform electric field, and is suspended against the force of gravity. What arercyvqx/k t271bm 5ivp/i. r.s the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mgj j)4m6+ td1zw7 fvvmye:de.C. What is the magnitude of the electric field 5.0 cm from the sphejw:m+ dz6fve)de jg1my 47v.tre's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electw /to77o-h vk5,oznuuric field 6.0 cm from the center of thnwz u5t7oo k ho7,uv/-e sphere?