State the law of conservation of electric nb*sd/ y2wfejg m 9-0vis*/qlcharge.

  Is it possible for two negativid zfch 68,pi4e charges to attract each other?

  Is it possible for a positive and a neyvy4qtl,x.n)xexf8wi ybi .-rl3)w,w xha/ . gative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the po2v;h(s23ccqn qpqz*tt+) lrrocess the glass rod acquires a positive charge anpql ) (qcnq2z;tr2+ 3hc*ts ovd the silk

  A proton carries a

  The model of the atom shohbc7j /w*rp8aws a

  A neutral atom always b /wh-,8 mgfb9u3ogekun0 p z)has

  An atom has more electrons thanzc9msf0-isddj ;11m zx3 d 7hg protons. The atom is

  Materials in which the electrons are bound very tigh7shzp4 v)j -x ua61y* w7esobatly to the nuclei are referr*sh p7au7y)bvj1xz-eo6 s 4aw ed to as

  Materials in which theb jt79l2)e;81 wv)ikig3-zcold qz kh electrons are bound very loosely to the nuclei and can move about freely within t w8tik; 1hezdz kj)7q-) bcgll39o2ivhe material are referred to as

  A negatively charged rod is brought near one end of an unchabc:4za / i6ki3b dp6d sgh)-,8mol+bd;w nzmurged metal bar. The end of the metal bar farthest from t6s lhbba;i4+p8b i-c)n:u d gzdwm,/3zmdo 6khe charged rod will be charged

  Sphere A carries a net positive charge, and sj 2on6ckc7kig w3d +l9phere B is neutral. They are placed near each other on an insulated table. Sphere B is37kj9+loc d 2gwc kn6i briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chac c-ay xsgj wfz.*/ 3de25qyi0rge an electroscope positively?

  An originally neutral electroscope is briefly touched with a w+lbk+ak5j4f positively charged glass rod. +5 wkl+fb4kaj The electroscope

  An originally neutral electroscope is grounded briefly while a positipkv(r7o);- u(mddj um vely charged glass rod ismvmd kp(rd7 u)jo;-(u held near it. After the glass rod is removed, the electroscope

  A positive object touchevqrllxn y3 dr29xfiy fv )0 9*.hf:a0ns a neutral electroscope, and the leaves separate. Then a negative object is brought nea*v:xry2n )i q3 an.hfr9 0fyf09lxdvlr the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral3uwjnbx;g/t6ld-u rkpw 6p*sdp5o5 . 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 ball touch the negative object. What ipkp6l- uw su3 g5.6d;p5 dnobtwx*j/rs the final charge on each ball?

  Charge is

  What are the units of the Coulomb consta/pzo ryx;-p-w. *dq3fdgly f(1arm.uul z+m (nt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is v06pc )o -ipu5sl (etflarger in magnitude than thl e v0ocsipt65 up(-)fe second charge.

  Sphere A carries a net charge and sphe 6p zdeym2sr:7w/ r(cere B is neutral. They are placed near each other on an i (/ 2sp:wreezyc d6m7rnsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attr)/v fnirjh a;//./yjgk kzfe9act each other with a certain force. If the charges on both objy/ike gv;hf f)9r./kza / jnj/ects are doubled with no change in separation, the force between them

  Two charges are sepajs) 0osk )*lpj6 +jkuzrated by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance s0 )jk*+luszp6)oj kjof d/3, what are the new mutual forces?

  Two charged objects attract each ot4-rw9nvx5fnr:cz ;iy her with a force F. What happens to the force between them if one charge is doubl94:c xn n;-wy rizrvf5ed, 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 distance of 1.0 m.r+3/m a6zyo ,u 5deu7,olwh*f ueb0n x What happens to the magnitude of the force on the proton if a second electron is placed next to the first z udeo0a h ux,*,f+b6l/7wu3y5rn emoelectron?

  An electron and a proton are separated by a distance of 1.0 m. Wjx o+0b5( (yhk(auwo /tt zja.hat happens to the magnitude of the force on the first electron if a second electron i(y5hw +jajo0t.u(t(/xk z a obs placed next to the proton?

  An electron and a proton are separated by a distance of ( efost s/xptqn,k/*5:l) e,s cvdjk, 1.0 m. What happens to the size of the force on the proton if the electron :o5)fdq ,,js,etpvk/ cs sektln (*x/ is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center oc,s on,w;oia)f 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 thao; iwn)co,s, e 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 equilateral tri fm94xmkqth4q fs2,m2angle. 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 magni q m2,hfx4st4 9kq2mmftude 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 followin24b* i(g5*qfrmah bizqu 9,bog is not a vector?

  At twice the distance from a point charge, them m0yj9(e:vg - lchb3b strength of the electric field

  Is it possible to have a zed lge:teku.2+ro electric field value between a negative and positive charge along the line joinin+d: ukg2.e lteg the two charges?

  Is it possible to have a zero electric field value betweegs 5 gex :8l+5 3.mtdch*ewgy1ujewj5n two positive charges along the line joining the t5w1eh*x5ed.wjemj3+5: l8 y g cgs tugwo charges?

  Electric field lines near psitive point charges ho7ft4mfs4 o)

  The electric field shed3-0 cvnuo6ep+gl- o mz42y town

  Can electric field lines intersect in free . 7kfh3n7n edvspace?

  A solid block of metal in electrostatic equilibrium is place-yn8yosy*g3(, wfma s d in a uniform electric field. Give a statement concerning the electri ,sn(yfs o g*-am8y3ywc field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal .by w;:i8knx,9 vzhubdiameters are each given the same charge, the electric fielbkniwzh;yxu89 bv., : d (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniformx30 i)uliv1)o/mst6u+j fk yx *pqo9x electric fieldy*+mkqp9/x 3)xu 6j01sfxoil io tuv) is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in py8v/0b0r(-te(eah r hx(im jelectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow me5uifyse 0tu 8+tallic sphere that is grounded. As compared to the caisf yuu5t08+e se without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilib -dsl,a1:p 8virjo8iprium.

State Gauss's law.

  The charge carried by one elevxfj j +b+y4gyck/50 uctron 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 m ehw 1i qgt/bvi07qs:+ore protons than electrons does this piece of plastic havhb1ews7ii+ q q 0/g:tve?

  What is the charge on ygfw 1,zu8/v:9 4rbvjjz, hj,vobx. t1 kg of protons?

  An atomic nucleus has aym/zr/y mtdc jb)q*b*81cjr+p1gx/g))og jk 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 t u/gg1)xs m+n-4.0 mC, respectively. What is the magnitude of the elecng1g) +sx mu/ttric force between them?

  A 1.0-C charge is 15 m from a second xx eulhc,1w/yr5ezrg7a/tv w: 9j5 0ncharge, and the force between them is 1.0 N. What is the magnitude of the second cy e ltrn wgjrxahe7v 1u w0x/5z5:c,9/harge?

  Two 1.0-C charges have a force between them ovl5n) m4 p* ogttnxl+2f 1.0 N. How far apart are they?

  The force between a kl:ha4jxpwz0ee v -ro;4/kxf(q 5nj-$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initia/re:2qqn )bnlw m;.uflly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 nq2b ):e/ n.;muwlrqfcm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the m(k,nxuc c90e.dawp.xj :4rox-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 magnitudpx4 :0, ckxo c.jm(nar e.9wude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A c.pvlqht ;.y lutyeo- . 1(r6dqharge 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 direcp61dhe t y.vl..r(l yqu t;-qotion of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following juxg9b zp)0)a a*4mjyh - t: e2fgvp2vq9qq5mpositions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -12xtjzv*5aqm 4qvm-q fj9augp )p02 )hge:9yb.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second poi bj)( jvn),:rkyve7l cnt 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 th)rk,yj: l)ne7v cvbj (ird charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0u wab 4*xih.zd69t,vs .n tb9r nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of,t*9ub iarv6bnsxt9.. dh 4zw the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 mmg7k ugq6j6kgn/1n x5); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force o6g 5k/ jg6unxq71gkn mn the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices ofmw+x x ev(7vo :lapar3- sl:q/ an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostaticxp+73 qa(wr/l-::x av emol vs force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. Atos2cj yyh**o. z30b.9xv2a8 nnm lcoi what point, on a line between the two charges, would it be possible tni*lo *82c..vo2zjbsnc 903oxmyyaho 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 tw2ta +bm kn*z)7utw:at x = 4.0 m. Where on the x-axis ca7z:ww*ttk)u tmna+b 2 n a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whep-s6l nzkpd;v ghu9oiwp -.)4 re can a third positive charge +q be placed so that the force on)nph zo6sui .w9 d-kglv4-; pp it is zero?

  A copper penny has a mass of 3.0 g. A totail/j4ptgo 1.o snw6k nkvpwxhf8vgk). 12-3 a l 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 trhx/( jqt7ws f,h n0)phe force of gravity by the attraction of a fixed proton some 7hr)0wpf xq( s,n hjt/distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hu8njei -z,- xk5s smh,d.p(kkang from a common point by nonconducting threads which are 30 cm long. Botk,.j(k, nsm8-s dk-ahxei 5zph are given identical 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 mjwmce+/hl/ b lk *3hv0agnitude of the electric field ab0ch e*whm ll3+//vj kt a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field /qxbg x au1tuvn-6.7 a 1yb9gmat a distance of 1.50 m from a 50.0-nC chxtqb n1 -m 9ybg/ v67xa1u.augarge?

  A 5.0-C charge is 10 m from a small test charr qzk)nr r*n: nxgh*+;ge. What is the magnitude of the electric field at the location of the test charge+ *)n rq*z;rgn :nxrhk?

  A 5.0-C charge is 10 m from a small test charge. e8zhjtkyu b7 s. 9/oi3n/m0q g What is the direction of the electric fgqyuik/s9 t /.bz78o30njhmeield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudefq ny/,q; ogw2 of the force experienced by a 1.yf/;2wgonq ,q 0 nC charge placed at the location of the test charge?

  Two point charges each have zn+a*y5aq-b 5s) pxp /.wafie a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chafwis5a z py*- b+xea.p)qa/ n5rges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charg5a wt:dwt5xn0c 7u)gke is placed at the 50 cm mark. What cg5tx7 a:k0w)u5dtnwis the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stikcvx6 )p0qq wz x,6cn1sky(*1x qgk:ick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is th w) x :0 kckcqgx61v1py* qi6qk,n(zsxe electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 anq( *zat: 3xd.tno tf.9ol rb3ed x = 0.20 m. What is the magnitude of tha.zbnq 93loo tt3(x *e d:frt.e electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of av2x idq2 5f;qv square of side 0.50 m. The last corner is occ;xf52dv qqi2vupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m onazb p3: g:-o:6vis5 d nbdbh64mzsmd/ a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0)b:6 m6d-bzs :5o43n:pi ahvz/gdm s bd; +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 when it is plac84 g b89om- y.+ +.4d dvkzl4ywzg 2veoahzmeded in a uniform electric field. o4.edy 4m4v.evgw82yh8o l+ dmk9 zz-azb+d g What is the magnitude of this electric field?

  A particle with a charge of:srax/wr4(/ r1pb m3i i t/kgn 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 an electric field of 6000 N/Cpm0r.k7fx1i3c l0 ua u pointing downward. What charge must be placed on the ball for it to be ural.0xf0mi7 cpu 1k3suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. q2i4g0jejii -/mmtm9 The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and dire/90 je-i gmtmiqm2ji 4ction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is theest)1 6q4vw1t9uydntix 1,kj 1bvelt 9;5hx p magnitude of the elect9inu9qtjt eexx sh4y;1 vpkb1vt5, tdl1w6 )1ric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC.u8f-m9) z( d+ awln0gwpfnin. What is the electric field 6.0 cm from the center of the sphere?n0g9zalpn- +m)u(8 wfnw id. f