State the law of conservation of electric c :kjn/fm7m:w aharge.

  Is it possible for two negative charges to attract each ot)o dmo7wh:6px*oz r, 1e+xcmey)mh2 oher?

  Is it possible for a pos/ord8qg - kea0itive and a negative charge to attract each other?

  A glass rod is rubbed gzcez53f35zb f g2xk*with a piece of silk. During the process the glass rod acquires a positive cha5zgxecf 5f gzz3b*32krge and the silk

  A proton carries a

  The model of the atom su3q3ke;i/ twz 1vzbjz-03 c tphows a

  A neutral atom alwaysld 7x p:/vgi7d has

  An atom has more electroxjwc 66) mn6. fcf fy 078walum1flzd)ns than protons. The atom is

  Materials in which the electron w6ck5t)j+hw+muzj( ms are bound very tightly to the nuclei are referred to a twcm ()hu j5jkw6z+m+s

  Materials in which the electrons are bound very loosely to the nuclnhb ;(cmyez+jh8 3g( dei and can move e(c8mnb dhg+j3z;(y h about freely within the material are referred to as

  A negatively charged rod is brought near one end of an unchargekgwz7i(5g5n zsy: wy5d metal bar. The end of the metal bar (w5:75ki g5nysz zwyg farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They gda5gnq4kd46er v / w,3ejm4dare placed near each other on an insulated table. Sphere B is briefly touched with a wire tha4q, gddmgk wa6n4rv/j4 35edet is grounded. Which statement is correct?

  How can a negatively charged rod charge an el9+zyq;l8 sh9o0np 5p4k yltq tectroscope positively?

  An originally neutral electroscope is briefly touched with a p9wxjlnz *q4 o6+9jzok-k i4zv ositively charged glass rod. The e z+ on*- 996iqwzoxvljk4zk4jlectroscope

  An originally neutral elpp8zikfj// m0+. o2 lnkb qav4ectroscope is grounded briefly while a positively charged glass rod is held near it. After the glass romfp4onkpb+z/aj i /8 ql .v20kd is removed, the electroscope

  A positive object touches a neutral electrr :mq(- w,yiwb3rud a,oscope, and the leaves separate. Then a negative obwa:ry iw 3bd,-r( uqm,ject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neur+b a(z+fk 5)gmnt *r eoc2av,tral 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 objecmf+ er)ar n*+c ot52a k(,bgvzt. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb cofs70fg cf9h j2nstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first ld7( n8drkw btk7 atcn,zb(k).k,my*charge is larger in magnitude t) dal(7kw7,b.r n,y tmkbc(8 dkn* tkzhan the second charge.

  Sphere A carries a net charge and sphereyl gaiy3sd3 ll ok4*8) B is neutral. They are placed near each other on an insulated table. Which statement best descri4o3yk*ylg 3d lsl a)i8bes the electrostatic force between them?

  Two charged objects attract each othe0iglqeer-t bhr). 96er with a certain force. If the charges on both objects are doubled with no changeh.i )g9b ert-qe06 erl in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces of; .h2i un92tk-ufzvftr zc8l0 F on each other. If the charges are separated by a distan ziftlzt2h; -9 vn2u 80cfukr.ce of d/3, what are the new mutual forces?

  Two charged objects attraflae s 4:2ir;bb2jjm (ct 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 distance between their centers is reduced to one-fourth its original value? m2 j4(2fi;j babe l:rs The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happensluh xef/s(,mm u8ss tb;5c x):ia-a*l to the magnitude of the force on the proxtx m*f:baci, a5)( slel s-mus/h u;8ton if a second electron is placed next to the first electron?

  An electron and a protjn 4i705wnx*xyvis1c,oc l +yon are separated by a distance of 1.0 m. What happens to the magnitude of the fvy4scx n5, xn+yw o7il1*c0jiorce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separateu 6ya 0vh ,jxxaix2r98d by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 y,60xjxau2 rxi8hav 9m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second point clpeke718 *uhrharge 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 actrklhp1ue87 * eing on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilate/t:v tmws7o 9/neaxix k, li//ral 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 magnitudeilktxxnte /s,7 /m:oi//a9 vw 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 vect,g+8l uxvcp+ror?

  At twice the distance from a point charge, the str1zckbvxc,5nq8 ss57p ength of the electric field

  Is it possible to have a zero electric fz33c7 xzge ai+0-h duecnsy45ield value between a negative and positive charge along the line joining the u5+ezscynae033xc 4-h id7gz two charges?

  Is it possible to have a zero electric field value between two positive charges;7 0)ixe7x1sz +)7o piwig cw yiv-qns along the line join wve 0i7xnxss;iqii- +7pwyg1)7)c z oing the two charges?

  Electric field lines cxhgdjakq i(c,u,2.3/ ap8e enear psitive point charges

  The electric field shown 6gz15x ,/kwditn/4snynek k-

  Can electric field lines intersect in free spad6dl.p. 9mb ; zfp0iu i8lqy/kce?

  A solid block of metal in electrostatic equilibrifp g 5/wxf)nq.h2wsp67b z5njum is placed in a uniform electric field. Give a statement concerning thefz g 65.x/j) h7nn2 f5wqpsbpw electric field in the block's interior.

  If a solid metal sphere and a hollow m kw99-8dt+ iz4fmq).fes qee8*xfg w hetal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface qsh* e +wgzf8-9ik m)d9q4xwe te .ff8is

  A cubic block of aluminum rests on a w f z r*wuol0f4x:*hy,rooden table in a region where a uniform electric field is d0hl**, zfx:rf ryuw 4oirected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic e2eskznuvb*ku74eho sg9a- m332 :fhwquilibrium near an electric charge

  A positive point charge is enclosed in a pto,o5 e (79 fbtbz-n1yd.ti-uf/ unihollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point dire 7f(t-ni 1uz/db-o9yi5euf tbntp. , octly above the hollow sphere has

State three properties of conductors in static equilife 1g.)zzwzs1yw 7il7 brium.

State Gauss's law.

  The charge carried bmq6gr gil *h4z3l2) upy one 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 net2tpinqwtc-5e) t*8upd.8 c pvi-r d;u charge of +2.00 mC. How many more protons than electrons does this piecp*p tnt-5t2 d 8q)ciew;.vupdu rc- i8e of plastic have?

  What is the charge on 1 kg of proton *f,jaei(nno 0s?

  An atomic nucleus has+ +gnua+8,l ie,yomr3n3 eehcjv jf8 . a 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 cm9 kx3 skgw5t3a, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forcw9gk xka3 ts53e between them?

  A 1.0-C charge is 15 m from a second charge, ,-axxmmhh 5p ,and the force between them is 1.0 N. What is the magnitude of the second chmxh -ahxp,m5,arge?

  Two 1.0-C charges have a force between them ofo/cz3 oi(ymn . 1.0 N. How far apart are they?

  The force between a ey 7km6 -/-4uxx c;qxkfqd x5k$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N p n,oi uxjg:ib2:y:4wforce. If they are moved to a new separation of 8.0 cm, what is the electric force bopuy,2ibngi: xj4: w: etween them?

  Three identical point charges of 2slrsv(c 96r1wmv2;e c .0 mC are placed on the x-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 magnitude and direction of the s(srrelv w9v 62c1c m;electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A pcxu7 bd 5ibs** 1sqd-v;*swdcharge of +2.0 mC is placed at the origin, -2.0 m C to the ri*bbp-7*q cdd*sv s1 sxidu5;wght 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 charge at the origin?

  Three point charges are located 5pn6(s -b:u2 zno gh; j.cwgdt+ira)gat the following positions: 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 thg-r go.nj :2sb ag(p5nduz)+;6 wci the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a secon3 mw/r+q +7 8fsavypbpd 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 place saw 3/+8pbqrpv+ fmy7d at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3/ztx jo -:+yfxk*dl *mwh8vv5 = 5.0 nC is at (0, 0). What is the magnitude of v+f jy 8kl/:do*m 5xxw -*vthzthe net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at c37 xilsx ,peu(rt7p7(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the pi(777x3 xrt ep luc,s5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of a0hl x1lk(a nh-n equilateral triangle which measures 30 cm hk -(llx0n1h aon a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whic(0al7;zndi dhru 58v d4+lqcv h are separated 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 tlc7avi qzv+ r( ld0 d48h5n;udhat the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the ori trsvoqnux 56/hu3 /l4gin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force onqnv5thx 6 /s/u 3o4ulr it is zero?

  Charge +2q is placed at the origin and charge -q is 57pslh d5hjc1zbk / :wg)ar r(placed at x = 2a. Where can a third positive charge +q be placed so that the force on kd5(1bgspcl zh)/5 :w r7ajh rit is zero?

  A copper penny has a mass of 3.0 g. A tot grz0up /b6w7qu4o 9ltx;.wmual 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 acjsgdvw (v4:/gainst the force of gravity by the attraction of a fixed prwjv(/vd:4c s goton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal sphe1m1n/jss/p94wuwjur- gmr k +res 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 the9smr rww k/s+uj4g mjup-/1n1 angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What ow nh /gdk9-8wis the magnitude of the electric fie 9ogdw-hk 8/nwld at a distance of 1.0 m from the nucleus?

  What are the magnitude and k21cr3a: nx .qkx;okhdirection of the electric field at a distance of 1.50 m 1 2kxocr;kn. 3xk:h aqfrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magns ge5c1/5wn jqitude of the elec1s/n 5egc5jqwtric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the e s-lq8vxf (qt0lectrlf 8vt0qx q-(sic field?

  A 5.0-C charge is 10 m from a small test charg/*:ihvle1f1o 1nymb he. What is the magnitude of the force experienced by a 1.0 nC charge placed at the lomb n/y:f e1ioh vhl1*1cation of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a dis2xokpn8 )1qlv tance of 4.0 m. What is the electric field at a point midway betweel)x8nokq p12vn the two charges?

  A 5.0-mC charge is placed at llaok4(y/(e);lifkr the 0 cm mark of a meter stick and a -4.0 mC charge is placed at ta;ykokfrl) i4 ( (lle/he 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 mete -gi6 +6ajjxokr 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 ei x6-a6 gjokj+lectric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x cuxl o0xp;n 41x+zn+a= 0 and x = 0.20 m. What is the magnitude of the electric f ;nz0co++4 axlp1unxxield at the point midway between them?

  Three 3.0 mC charges are ad0a *t/ceui2m t the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electrid 2*u mcat/e0ic field at the center of the square.

  Consider a square which is pj*98iaph ap91.0 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, 1); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is the 9p*pia9a j8 hpmagnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 myh 7rik bm0-o3C when it is placed in a uniform electric field. What is the mag ym 07khob3-rinitude of this electric field?

  A particle with a charge of 4.0rzjkny,vn+ 7gsp r(/: 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 f 4ldk n-qruy;;bqx//jield of 6000 N/C pointing downward. What charge must be placed /kxq-d/qrn ;l4y u j;bon the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is pla ie+*ie1.jrbpced inside a uniform electric field, anp b+ie*ij.1e rd is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a cha* 0. cjl7xw* cydjorl7,w b,ttsz/2elrge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from thellj*,xcd,z byte77l sc*/twjwr.0o2 sphere's surface?

  A metal sphere of radius 2.0 ajqdj 9a *(d cc10(d+. yrtkpecm carries a charge of 3.0 mC. What is the electric fie*edtj+pad 90(1arkccj dyq .(ld 6.0 cm from the center of the sphere?