State the law of conservation of81hjqp/9mtq sy ; zf4d electric charge.

  Is it possible for two negative charg5f6tzzu;j)44gf2rrl n gb7fu es to attract each other?

  Is it possible for a positive and a negative charge to attract eac zkj++znv3en*-;a32tc hvw dsh other?

  A glass rod is rubbed with a pxpzl0 dr 0a(jkizq6;,iece of silk. During the process the glass rod acquires a positive chargzk azx(l0 6q d,rpij0;e and the silk

  A proton carries a

  The model of the atom shr1q+h 1dn4 malows a

  A neutral atom always h;6tr3 1xu/yhf+f,u2l cvu 7s)eew xgsas

  An atom has more electrx,f)sg 1iq 0ispwy, /:kd,oe /k3llgcons than protons. The atom is

  Materials in which the electrons as9l11ss ahl nep x+w6s, i*jw;re bound very tightly to the nuclei are referred to w;9j+sl ,s1ienx 1lwph*s6asas

  Materials in which the electr)-il rvrxyp7 gi/:u +pj1ak bow9k7;v ons are bound very loosely to the nuclei and can move about freely within the materi ul1);p:+k7j/yrvxwi vi9- or 7kbpa gal are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bau,xxx e 79 8t(4k )lxn9advreur. The e,9n4xld autrx7e(9)uxv 8 k xend of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphe zq5pv6y2gtm 07br-ghre B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groun06hzbrv mqgg5 y27t-pded. Which statement is correct?

  How can a negatively char zdfq) 1lgy1b+ged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a . iflhu5yn zr08hedv*m gu(:+uf-6xwpositively charged glass rod. The electroscop:0gv 6 dufhxrinhef*uu+.5 yw mz8(l-e

  An originally neutral electroscope iiz;h- . t-9ntadvz :r be7eo9is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, thb-i:tean ;9e -rzi.o97tdh zv e electroscope

  A positive object touches a neutral electroscope, and the*n7-vd9b w* 237 pi.wu:lp uueqtia op leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to theoaud bepp:7*ilpq *w.u 7ti3w2n9vu- leaves?

  A large negatively charged object is placed on an insulated table. duopdm/ dz0)v) ws -)uA 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 touwsudv)om )/0pd) u-dz ch 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 constadq7dvr bxeyuc-cosx4z28 10*y:lt 2knt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chaeb 9ethju3jr9 imx 0)-rglu 148f6 piarge is larger in magnitude than the se643jfheij)-m eia rr ugb901l89 tuxpcond charge.

  Sphere A carries a net charhhw8 cyt-8.zege and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force bzew 8h-.cth8 yetween them?

  Two charged objects attract each other with a certain f g.k n lt.f2pxl,m6fu4j,hl:lo;aa b9orce. If the charges on botht 9. ap.amh6fx;ln: l lbuo4k,g2j ,fl objects are doubled with no change in separation, the force between them

  Two charges are separa:g:jyvok0cyg t3q4w2 s9 iqc.ted by a distance d and exert mutual attractive forces of F on each other. If the charges are separa: o wcyg.ksi0y 4qgtcj32 q9:vted by a distance of d/3, what are the new mutual forces?

  Two charged objects attractwf)d6l8 hxcg r6 aa4p* each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distancad*rfl 864hagwc p x6)e 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. Wh k9gq15cpm z3wat happens to the magnit5 39q1czgk pmwude of the force 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.sa3 (g 3bt.ydc What happens to the magnitude of the force on thgab3 s.c(t dy3e first electron if a second electron is placed next to the proton?

  An electron and a pr 18 t0oeil/trxbrv3/aoton are separated by a distance of 1.0 m. What happens to the size of trxl0a 8 tr3b//1v oiethe force 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 square. When a second point cw (u9/y 8esmlfharge of -Q is placed at one of the square's corners, it is observed that an electrostatic fsmw( 9/lfu8eyorce 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 rm0nc: tvi3c8w 6hqghzh/2m+an 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 magnitude of the force that acts onc ivmq6 :2w/3t08gm+h zhcrhn the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following9qu0r.rh uv- kj8f h;y3ny o;m is not a vector?

  At twice the distance frz +udj8b;ey8/tqf f2oom a point charge, the strength of the electric field

  Is it possible to have odsk c7*q0 pmiba pivkui+3n2n:19g.a zero electric field value between a negative and positive charge along ab3i cp psk:viin1ukd7o 0*. 9gq+mn2the line joining the two charges?

  Is it possible to have a zero electric field value between two positive c5u i/sxf-kr gh*z (+9fuwb3 axharges along the line join3uf 5b -+sa xxfgu(r9h*k /izwing the two charges?

  Electric field lines near psiti 8z55xzydiv5ive point charges

  The electric field shown ol3:(dlilz 8t

  Can electric field liney)5x q ge p2cmyc4w)q0s intersect in free space?

  A solid block of metal+a5h zo f4zvxiucq.- 5 in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block'quaocz5. xv- hz+5 f4is interior.

  If a solid metal sphere and a hollow mg:hbll/: c3ve.g1 5llcb8r qretal sphere of equal diameters are each given the same chaqgv:b c83lc1 ll/br r.5hle: grge, 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 s0,ban):8 zw mws*mgbvhb( 5za uniform electric field is directed straight upward. What can be b0z:w s 8 *5bmh,m)gvazwbns (said concerning the charge on the block's top surface?

  If a conductor is in elec.m d tcp064t z(w bzewt8vnm2;trostatic equilibrium near an electric charge

  A positive point charge is encbx rv28dd5q+utk p0 4olosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point direk50r2d8bxqtuvpo+ 4dctly above the hollow sphere has

State three properties of conduc7lzxvwr4 05dt tors in static equilibrium.

State Gauss's law.

  The charge carried by on) 37iecn 0nypj5e (,ed;oqxw qch,hn6e 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 +itddr t3n6 (9n2.00 mC. How many more protons than electrons does this piece of plastic have? r t93idtd(nn6

  What is the charge on 1 kg m1e jtl lgn3yi-r8hoa.4y2.oof protons?

  An atomic nucleus has a b*-ae+ gitf,nwsf (bv 1cxy+:;ywg2t 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 a;-b,e;ybnx ux nd -4.0 mC, respectively. What is the mab,eu n;y-x;x bgnitude of the electric force between them?

  A 1.0-C charge is 15 m from a sec/pat mr;s0t k mzy)3p7f+ ih.aond charge, and the force between them is 1.0 N. What is the magnitude of the sr3pmh ti /fy7 +pk.0;ztamas) econd charge?

  Two 1.0-C charges have a force between them of 1.0 N. Hogzc2xso a (ij -y:(rz)w far apart are they?

  The force between a l0si*mp o.c0r$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 db;mk2; hv:(t;mk v;3 vwzduj9)oq xjcm apart, experience a 1.0-N force. If they are moved to k3jq;m(u ov9;z; h;2vtm b)jxwvk:dda new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed ol j*ojw q5; :nr4(lorpn the x-axis. The first charge is at the origin, the second to the right at x = 50 w(;j5njl4plr*o: r oq 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 onxzmh ) o/x1dzhet48i g(e*2 fi 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 direction of the electrostatic force which acts on the chaxed4( /tmh )1zgii 8f2*hx ozerge at the origin?

  Three point charges are located at the following positioj7*lsk7xl6 +jtq5 vfnep j,rs -gm9-dns: 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 the force on the 3.00-mC chafvptd 7*l6x9 s se5ng -j-7,lq rmjkj+rge?

  A point charge of +Q is placed at the center of a square, and a secoq.uuy eo8wr59nd 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 p5e8 qruyouw9.ositive 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 mv sv1 :ah8hy4iedh3x(, 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 5.0 nC48syd i3v(1h e:x hhav charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m);cv asb:x hd, wnqf(ofmxkz9-:t.m 824 Q3 = 5.0 nC is at (0, 0m2kw-v,b xtfc:zshq8m 4a d. x9nof:(). What 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 equilateral t u+0- 1+ m bavlicnj+(ji2hdlrjbdl,4 riangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which -n+l ,bhvli2d4 lmjdr+01ju+i ca(bj acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 7be y n s;ll/-tpp2xn+m. At what point, on a line between the twoep-n;/7lxpt2lsbn +y 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 x:vn ii/i 71suki(8 7qmqhvj* o = 4.0 m. Where on the x-axis can a third charge be mk 1svi i*(i7qi8/ujv:q7o n hplaced so the net force on it is zero?

  Charge +2q is placed at the or n:tboi +an(y1igin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zey bn( na+oi1t:ro?

  A copper penny has as l/ g67f:r tdcs5tlk. 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 gravity by the a.j u.5i dajept/7l ca8 k;6pnuttraction of a fixed proton some dista.u8 5c.na6lp tju/ dpiaj7 ek;nce above it. How far above the electron is the proton?

  Two 0.20-g metal spheres arw. kxb af8e1:iqql+0bn. k-ere hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsi0bflnaek1.q k ex+:8-w qb.iron 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 electr5g t-hj-k m5ryic field a5mkh jtg 5--yrt a distance of 1.0 m from the nucleus?

  What are the magnitudjhq(l* zo* :cee and direction of the electric field at a distance of 1.50 m from a *lc*qj:hoe(z 50.0-nC charge?

  A 5.0-C charge is 10 m from a smalq57spw8qf j f2l test charge. What is the magnitude of the el5w2 pfqqs87jfectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a sm,sw30zpd/pq b all test charge. What is the direction of the electrip / wqd,bp03szc field?

  A 5.0-C charge is 10 m from(s.vmyz6z (pz a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test cha(zp6 .zsm vyz(rge?

  Two point charges each have a value of 3.0 C and are separated by a distance of4 -qa:mu -e4rajvaf2d 4.0 m. What is the electric f-fudaqmv r2-44:a e ajield 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 mweqe sb)/ ) obb2lr)4jC charge is placed at the 50 cm mark. What is the electric field at bwl o4 e)qj)/s)2r bebthe 30 cm mark?

  A 5.0-mC charge is placed at the 0 co:+, zfah8pbweh6q y) m mark of a meter stick and a -4.0 mC charge is placed at tqa 8ph :yb6zohef ,+w)he 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges ofeuv(uwln/ ;sgiv h2ug b/axw9t8))go wp 5e+( +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is ths;a 8+b)5 w (xwnu i/2e9uguho(l v) vt/eggwpe magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of rppl)t;ip.1gz,fanj64 6uhw a square of side 0.50 m. The last corner is occupf41il.upp,h6napt) ;gr6 zj wied 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 *j8m:yl z/b agi j6v-fside. Charges are placed at the corners ofjglz i:/-8* vyj fb6ma 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 charge of 5.0 mC .+p,3o ghai wej*r62m9msu aywhen it is placed in a uniform electric field. What is the magnisa +j gm6u.3ep9yr 2a ,i*mhowtude of this electric field?

  A particle with a chargke8vz)d:z1 zl; . nxjae of 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 rul2cdkk93,feqa f30mass 0.120 g is placed in an electric field of 6000 N/C pointing dow kkc20df3aq,l uer3f9nward. 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 n9ylddpurakd ma0mi n )4;+lgi y.7./ (dlnq+nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravi+lr )g7nlnuyy /i(n; dial9d+0 qkmpdm. d4.aty. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carr1ixfa3jhn x4u8 bh4yot8edj (qp 4(/oies a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphereaxf h1i8yp4ut8qex(4bo( j/d 3jhn o4 's surface?

  A metal sphere of radius 2.0 cm carries a vperz1x5,h4t cw k ;v4charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphehzp,ctxwr 4 v;5v4ke1re?