State the law of conservation of fj6x(5v* dwzj electric charge.

  Is it possible for two negative crs:;i80a4b:acr*eu m svnfe3 wn0e 3eharges to attract each other?

  Is it possible for a positive and a negative charge to attract8u 6g)rb :aaus each other?

  A glass rod is rubbed with a piece of silk. Duriny0x c 2p8sq2xwg the process the glass rod acquires ax y2sx 2qcpw08 positive charge and the silk

  A proton carries a

  The model of the atom s2 tl7/,r2oue 3*m4uzgejpeo bhows a

  A neutral atom always ha sl92bd n4vb.sbgv3,v s

  An atom has more electrons tha, pmsgj*1ej ,ln protons. The atom is

  Materials in which the electdc dy2jv+8g8 lrons are bound very tightly to the nuclei are referred+j 8cd8dvy2l g to as

  Materials in which the el l gcqt(j)qt-2ectrons are bound very loosely to the nuclei and can move about freely within the material acq qj-2g(ttl)re referred to as

  A negatively charged rod is brought near :)b8y qecalf i51mo g-one end of an uncharged metal bar. The end of the metal bar far flby ecao)i:m5 -81gqthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are ewyoh:6+t1 um *9 ,wen)xpqmeplaced near each other on an insulated table. Sphe6x) ,oe+ nu *9qehtmypwmw1 :ere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod cha678 hb0suy wh.gc -dfgrge an electroscope positively?

  An originally neutral electroscope is briefly touched w/2 3cyfi zu)eqith a positively charged glass fie c q/zy)32urod. The electroscope

  An originally neutral electroscope is grounded briefly while a positivelyexk/ y2pw3kltd: hv51 charged glass rod is held near it. After the glass rod is re2tv dypkwl1 5eh3kx:/ moved, the electroscope

  A positive object touches a neutral 6o,deqp2 k yf)electroscope, and the leaves separate. Then a negkf eq6y2 ),odpative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object i;p wrg b+u5apfo; c40gs placed on an insulated table. A neutral metallic ball rolls straight toward the object, buao pwrfb+ g;0gp 5uc4;t 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 the Coulomb constantn2o 9bq-0hzrx yi 5 pr6z8*mwf v1kz1o $k$, which appears in Coulomb's law?

  Two charged objects s se06+dx:srf;be3h n are separated by a distance d. The first charge is larger in magn6sb0rhd:+fsxn ;e3 esitude than the second charge.

  Sphere A carries a net charge and sphereh8*is-c s 7)za7ssr p*a/vxar B is neutral. They are placed near each other on an insulated table. Which statementh*7z-a)r xs* r /apvss8 isac7 best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If2ua u:f d29j2oy8p4rewxvvd 0 the charges on both objects are doubled with no change in separation, the force b j r82a24ovfd yp 0u9du2wxve:etween them

  Two charges are separq39 hfa.i5a v-f( ayvyurr1)fated by a distance d and exert mutual attractive forces of F on each other. If the charges are (a fvfrq. 3-1ari5)av9hfyu yseparated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the forc f8 d. cvghv95je2tp7he betwegt2vjc85 fh7h d9v. peen 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 are separated by a distan:nif,7 n,ob ivce of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is pla,n7n :,oivfibced next to the first electron?

  An electron and a proton are separated la /ar20e 5j:lak.g ojby a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the proto:o glkj j e5aaa.0/2lrn?

  An electron and a proton are separated by a distance of 1.0 m. Whal4dtcjd 72a8m1jh56 na dg2(1 j3yr o8hmifyqt happens to the size of the force on the proton if the electron is moaq8a47y(2no1 j 5lmthmgh yid6fj 3jcdr 812dved 0.50 m closer to the proton?

  A point charge of +Q is placed at the cennby.t;tm ;w 3ster of a square. When a second point charge of -Q is placed at one of the square's corners, it is o3.wnb;t yt ;smbserved 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 equilater3* ,rh)e* x-upaxndaxal triangle. When a second charge ofx*) *xda 3reuh-a p,xn +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 vertices?

  Which of the following is not a v 1kqbtogqd)k p5n*7x4 ector?

  At twice the distance from a point charge, the strength of the electric fx z (3gz nqj*h1mdv26nield

  Is it possible to have a zero electric field value betwe+dcwmp*y *8ra,mb ,6he p3 3dp a5qrvden a negative and positive charge along the line joining the c pae vwh8 a6ymr3+p5** ,d,d3 dbpqrmtwo charges?

  Is it possible to hav9c4mlafe rd0 1e a zero electric field value between two positive charges along the line jo1rmdcl f 9ea04ining the two charges?

  Electric field lines near psitive poin95 ow9 nfw4kjpt charges

  The electric field shoes*i /ybfnw , hsp5z69wn

  Can electric field lines intersectf7b+fe:m 3qww+pl2 yh in free space?

  A solid block of metal in electrostatic equilibrz jj pz5-70yreium is placed in a uniform electric field. Give a statement e7zp 5r-0zjjy concerning the electric field in the block's interior.

  If a solid metal sphere and a holl3)n 1bmh nsuyj18fj1l ow metal sphere of equal diameters are each givenb18jyfnh3)1n l uj 1sm the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rtj)+04 8f v(v5zjpicyfmkm.b ests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top smf8 (ivkjzm0p+jc5)f . 4tb yvurface?

  If a conductor is in electrostatic equilibrium near an electric chll0z /5k x1t 4dxszb(targe

  A positive point charge is enclosed in a hollow metallic sphere that:oj-9)zhi kj q11 2md rhd)hpu is grounded. As compared to the case without the hollow sphere,h1 hj jrd-)k1 dhi:9zuo 2q)pm the electric field at a point directly above the hollow sphere has

State three properties zs0+yd -d imq qcl7u95kkk-9h of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron -y **gmclp,nbojj n/) *asr:blg4+chis $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a 4i y.c*uy dbztygr:tjkf;+7) net charge of +2.00 mC. How many more protons than electroy td4k .yu zigr*+fj:yctb7 ;)ns does this piece of plastic have?

  What is the charge on 1 kg of protons?afacea +t: 5w/rj g d7yle+ij,** l7qo

  An atomic nucleus has a charge 9 v7 ddop rlz.ks8:ls(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 -4.0 mC, vg06v, k2 +7e to duk)prlyt8mccq( 8dresygv8dtmv7,8d 6pc eq lt()kc2 k0ur+opectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a se kqr thyu820qyg9 2 oyzsm)68ncond charge, and the force between them is 1.0 N. What is the magngn8ro96uyyy0 2zt )kq28h mqsitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N( nvkjvoi+p.;0 2.hc)nmgrh v. How far apart are they?

  The force between a dd 6ia208r2v5c pbbm r$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.r vhd7:x m5b h5 vv/m3/,x5qz3wcxgj q0 cm apart, experience a 1.0-N force. If they are moved to a new separation of wxc75xxvv qv 3gqb h/ m5:m,/rjz3h5d8.0 cm, what is the electric force between them?

  Three identical point charges/69 ed1 xazl uttbcez-zb5g.1 of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the rit/bezx5c-bza z91u1l .dge6tght 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 placed on the x-axis. A charge of (prg - yk09bqscy)2yhs,ph/r +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 0bp 29c(g yq ,-ss kyrhp)/hryforce which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x 7eumg gmoaq.8a0 54w l= 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5 lgwe7m50 o8ugqm a.4a.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 a5m qi 75wg3amjm2ri s.vr80ult the center 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 thei q a30582m sg.wruvj7rm5lmi 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 (0.3wvyoc1i 4pc .20 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 niw 421py ocvc.et force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 =- g;t( d(e+15;va/ b r6abkwqieqka np -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wta(a+-anwe q;(b1b 6k5 ivgq/ p; krdehat 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 equilater gn.ll49mzb63z4 sud kal triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one44.ln k u6gmzdz lbs39 of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At wha g.r;- ++gu* g qjffe ygmjca0mt0 )6m/hh6vhbt point, on a line between the two charges, would it be possible to place a ch6 ujt )g *+y+jm-6 fhmr gb;f 0ahh/ggm0.vceqarge 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 = wvtuxpp :/ g*-4.0 m. Where on the x-axis can a third charge be placed so p-x:p* t wugv/the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is place.e* olad3 54; dljwilgd at x = 2a. Where can a third positive charge +q be placed so * lawd.jol 53i;ld4ge that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total oeh;ocg6gr6;/ +wd41wtva vz hf $4.0 \times 10^{12} \; electrons$ 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+(+l9gr msz 4oy w2xbc the attraction of a fixedo4m(c zb2wys9 +rxgl + proton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commonxsv,lg8f / )t1jkqlx:zr/n e - point by nonconducting threads which ar/) e8x:tkr sfjn/z 1x g,lql-ve 30 cm long. Both 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 magnitude of the electric f-zgvx cqlbk 7,11s :lv k* 7f3ux/tggx-y/g vtield at g/ :/3xzt7gt7kf xvv k-cs,ggxb*q1-u1l lvya distance of 1.0 m from the nucleus?

  What are the magnitude and direoc q1xk8juh2wtt 0+:z ction of the electric field at a distance of 1.50 m from a 50.0-nC chat8:o2qu+w j 1 ht0ckzxrge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudekt)d5j6dy y.s, rts ahax47 j -gd*ig2 of the electric fiei6x*y4-gda,t ss j)d5y7 t h kr.dgaj2ld at the location of the test charge?

  A 5.0-C charge is 10 m frox.zux40 liif(j+ ax3sm a small test charge. What is the direction of the electricuiifs4z x+ 0 jlaxx(3. field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude8zrc +6tnt7 )sitl+hb of the force experienced by a 1.7n+ czst l8 htti6+)br0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are seprvqsyo- ,03uysnfn g3wo s568 arated by a distance of 4.0 m. What vsqgf nn -,8r5w30 oy3 ys6osuis the electric field at a point midway between the two charges?

  A 5.0-mC charge is placer.2 m5-b:riervtji 8zd at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at thz-i8r mr2ivb: 5 t.jere 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed*do3 bzwaf)8f at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric fie z)a*wf8 o3fdbld zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and xz5oti8mtwt3w -l,zc 4 = 0.20 m. What is the magnitude of the electric field at the point midway between thw8ztt -zti omlc,543 wem?

  Three 3.0 mC chargesnys9xak2 3p t3 are at the three corners of a square of side 0.50 m. The last corn sk2y 93pnatx3er is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which2mll,b ev o;4kbok1 l) is 1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 04k;eb2olovm)k l ,bl1 ); +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 r69:bmof72xyrr;b,e vw7gf o 5.0 mC when it is placed in a uniform electric field. What is the magnitude7bryrx67v w;e2f :ob9o,gfrm of this electric field?

  A particle with a charge of 4.0 mC (c+9 +q 5snsp y(q0nm e gfylfxe2l8z.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 m g7n9-slcg63ujzqv 2zass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for i2z6 v-nu c l7j93gsqzgt to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 c4r u0uaviq;) hpg,l2nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude ai0 ;uravcgl 4,)qhp2und direction of the electric field?

  A metal sphere of radius 10 cm carries a chamy4 89hj,fsj/yx jc:irge of +2.0 mC. What is the magnitude of the electric field 5.jx/,c: hm syj j8if9y40 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the ev 57y-8e5i iuuj h9crjlectric field 6.0 cm98-ir vjy5c5uu7 ijhe from the center of the sphere?