State the law of conservation of electric charg.v4)ls xvflo6 .n*bmqe.

  Is it possible for two negative charges to attract,trq zc*jz7 w:vthn5)v;n(mun u 8fo6 each other?

  Is it possible for a positive and a negative chardgp ;poe3m *ozl90nwu gj +osx*tt05*ge to attract each other?

  A glass rod is rubbed with a piece of silk. During the gr cjw. vs0x3m 2d8;wpprocess the glass rod acquires a posj02 vx.3w;rpmw8gsdc itive charge and the silk

  A proton carries a

  The model of the atomkb.g 3dfmtp1 ( shows a

  A neutral atom alwayi,p)q 3vm-sw6xto 5 x74n ffqas has

  An atom has more electrons than protons. The atom is c ;:r )u0i:s:uuwmdxv

  Materials in which the electrons riwe0 0)swz6zkuckaw28 9 gsv)vs(g 3are bound very tightly to the nuclei are referri vsv)wkk 2gr(ase 60z9u0 ww3s)cg8zed to as

  Materials in which the electrons are bound very loosely to n8g* ez vrt4g8the nuclei and can move about freely8en*g4t z v8gr within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged meta:2etz1 oqc pl7/i tma0l bar. The end of the metal bar farthest from the charged r 7m0tqo2at1pz/l eci:od will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are psom467kbtfs58rw* o ulaced near each other on an insulated table. o 7wru4fsk* 85mot bs6Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged regp wtug+)x32-v qzf7od charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively cha( t* e wp/oxk4f wi+az, vw32szh*,rkorged glass rod. * kzpzoh /(2f, awk+ swr4ext*i3,vow The electroscope

  An originally neutral electroscope is groundcv(3fd n-cvd b8/mu yv8v*f(fed briefly while a positively charged glass rod is held near it. After the glass rod is*vmvc8 fvy-f3/nud bcd ( 8v(f removed, the electroscope

  A positive object touches a neutral electroscope, and th cb:npkz8 m8)so5gf a4e leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens tp8zm 58onas kc b4:)fgo the leaves?

  A large negatively charged objeafdi(w8 g0. 9g3 cg)w2bbusnx: /fwhgct 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 (:gfcwsi/a)h2 ggwn.0bd bufw8 3xg9first 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 constant xd(k:rckb;3t.e : ej ap,qsj*$k$, which appears in Coulomb's law?

  Two charged objects are separate*do6v nena;uh s5dh3 9d by a distance d. The first charge is larger in magnitude than the seco63vhndn9uho* ;ads 5e nd charge.

  Sphere A carries a net charge and spherejy ab c1xjz,4/eqed+ i4.oaa 9q3nkr3 B is neutral. They are placed near each other on an ins3eaq.koxa+/ i qeajzbd3 49cny 4rj1, ulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each o7+bqem-p :gx kther with a certain force. If the charges on both objectsgbe :-qxpm7k+ are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attrac3vpo*wcjw hd3i5g3zro-zf o2u8; k- m tive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual fo 3v drzk u25cj*wp3hw8-zgomfo-i3 ;orces?

  Two charged objects attract each other with a force F.vn 4w w+-wkazya,r4r3 What happens to the force between them if one charge is doubled, the other charge is tripled, and ,arrwnww434a- +v k zythe 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 d)k mlmdah,206p in)n vistance of 1.0 m. What happens to the hnpm ,62 in0v)k dl)mamagnitude 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. What ,fvre05l2f bvhappens to the magnitude of the force on the first elecvff e50bl2 ,vrtron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happen7j+vw r/y:muwq 6 qi:os to the size of the force on the proton if the electron is mi j7+oqu:w: qr6my/wvoved 0.50 m closer to the proton?

  A point charge of +Q is plac imq8zj+ +s vrsw0;i:b ah9m,xed at the center of 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 the other three corners of the square. What is the magnitude of the net electrostatic force acting on the posmh0 jbzs,; 89vxsa+ +m:wiriq itive charge at the center of the square?

  A point charge of +Q is placed at the: )2hnfbq fth0 centroid of 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. Whb: 0 f2)hnftqhat 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 vec6; ifu/wlyp+ ctor?

  At twice the distance from a point charge, the strength of the electrih l18tsy onmy55-, qrjc field

  Is it possible to have a zero elekr mr0g4(, nrgn 5eeh2ctric field value between a negative and positive charge along the line joinne 0krg 5gnr(4her m,2ing the two charges?

  Is it possible to have a zero electric field value between twuv-z ,8q s+mbdzb3ar8 p4 z wklutjn+:fk+2w;o positive charges along the wzbm ++j;p uzsqdtvzrk+ -,48fa 8k lb2w:n3uline joining the two charges?

  Electric field lines near psitive point charges6vb.0f m6sy0sr19tt a rals:n

  The electric field shown 6*:pca+8or3 6evzc k nqip ,ljm*vs7w

  Can electric field lines intersn t+aax+(keo-ect in free space?

  A solid block of metal in electrostati/a; ns)* rpyutz.gxo ;c equilibrium is placed in a uniform electric field. Give a statement concerning the electric fipus/agzxr ;;t )*o y.neld in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters 5 /p6hzw /ptbj2x)minare each given the same charge, the electric field (E) midw b 6hmp/x zinw5t/2)pjay between the center and the surface is

  A cubic block of alutrvo:z3 pi:7zminum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said co7t ivz:3 p:rzoncerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an eas f-bntei*/.lectric charge

  A positive point charge is enclosed in a hollow metal6kkkrt4: 7b s6zjleo s+0s2n2; nzqo rlic sphere that is grounded. Arzrs7 6zk6le4qsj20 nob+sko ;kt:n2s compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static eqg)em(/mbr .mm) qz mjy toxt*z4w3*if7t 3;qmuilibrium.

State Gauss's law.

  The charge carried by one electron isotxnn xwg wlak3hk ;e:/dry0; 1z2(-h $e = -1.6 \times 10^{-19} \; C$. 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 manh zv oxsr2u;.ck,08j/zf 0sb iy more protons than electrons does this piece of plastic hav,rsjciz. ;h2f8ox 0/vsu0b zk e?

  What is the charge on 1 kg of pr1qm;dfcu u:hj5qy k+2mls11botons?

  An atomic nucleus has a charge ofh p0yyt:)c6x )ilsml( $+40e$. 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 va3 +iqh n.qf0 cqgb8dv)lues of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force bet8+ghdc v 0bqqi3)q .nfween them?

  A 1.0-C charge is 15 m from a second charge, and the force between themn7e9 cg tcn5.)owt+mm is 1.0 N. What is the magnitude of the +t7 9cmt cnong)mw5.esecond charge?

  Two 1.0-C charges have a force between them of 1.0 Nva3pfchw6 4 krdg779o. How far apart are they?

  The force between a gf1ldcr:)7d o$30 \; mC$ 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 force. If thzazpl53x /ts 2ogd8j -ey are moved to a new separation of 8.0 cm, wh/ z lp8a3gt25 xz-sjdoat is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first p+rkzk fhpw3*1 t2x*vcharge is at the origin, the second to the right at zw kr3pf1 +xv2tkh**p 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- s-omwi74)1n/dikra daxis. 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 a71)iaonid/dr m k4- swcts on the charge at the origin?

  Three point charges aanyadz l3 h8or)*529lwv a;op re located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC atoh2)9ao aa8 3dz5pnlry vl* ;w x = -1.00 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, andzc9bmj8 0tamjvwuf sr+g3.9( 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 ceng v3 sj80zw 99fmr(au.jbmtc+ter. 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 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 ov*:vuxn5 g* knC is at (0, 0). What is the magn vkx:5o*v ng*uitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is e ;2i/+d e 36popj 2zhe3ihxkhat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 3+p ezejdi2; oe 3k2pxh6i/hh 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the ve:w*kcg2 wui; srtices of an equilateral triangle which measures 30 cm on a side. What is t2uwigw*:k; cs he magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q j9d:j :lk4 d(cos(wq,l6lu u jand +4Q, which 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 sk ujl(w9(d :lcj6luqj: d4o ,such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at tga5tc4vp 6 6eq a6t.qkhe origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axistteqa6kc5.64vpqa6 g can 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. Where cz5g*e) f-ioy r, pcbo mdu7q-5an a third positive charge +q be placed so that the force on it is zerqf)7,cde*gmu ro-- ypbz5i5 oo?

  A copper penny has a mass of 3.0 g. A total djzzbs8t 7da43e4 :clof $4.0 \times 10^{12} \; electrons$ 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 again .kc..t*w q a(q-r+pydx *.wpmiuv: nest the force of gravity by the attraction of a fixed proton some di: x+q.uw tk-.n*p* evwi(c.m. daryqpstance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung frx9tc * mwb f 7i8skydw.5v2xm6om a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angbkm657x2i.ws 8 tcfvy9w dxm *le between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a cd) eu33x- fydj4 bkd5hd-3dll harge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nu3 -d5fbded3lly-d kd4x j h3)ucleus?

  What are the magnitude and direction of the electric field at a o5ex0ypj2/ ja distance of 1.50 m fra e02 poj5/jxyom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is t9wc0+w m9)kid. owj ,c/sjmkohe magnitude of the electric field at the loca .d9cj,o ow s)mjk0w i/wk+mc9tion of the test charge?

  A 5.0-C charge is 10 cf,+ka32t xzzga c(0im from a small test charge. What is the direction of the electric fielda(tz2az0x i +kc 3fcg,?

  A 5.0-C charge is 10io7 j9l ;wdve1j/u3hs m from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge /wdjs 9e h;7i 3o1lvjuplaced at the location of the test charge?

  Two point charges each q.zhx lclh(x xg)(r 59have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point ghx(rh9(ll)zc.xxq5 midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm vdcv7sy77 zl,b(mfaus30jsf+b0j 9 qmark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm m70v9b+ m( q c jjlays0v77sz,sf3udbfark?

  A 5.0-mC charge is placed at thkm,6e y3jla(le 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 che6aj k l,3(mlyarges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are pj doro7(h5hnt dz ym5v9/m4i 7laced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the poi iz79n75mr d(vm4ohdj5ohy / tnt midway between them?

  Three 3.0 mC charges are at the three n w5xrtf7ar4y2.c7 cbcorners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC char rc.5fyrbw4 t2 acn77xge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on lq k6- aa 8:b.uovplc2a 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 atb- lap82qu ac6l.:vk o (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 2jh tr3 yl0jz- 01sbsfbgl53buniform electric field. What is 3lj2 sbry1bf0 jgt z -50blh3sthe magnitude of this electric field?

  A particle with a charge of 4.0 mC has a woi6,g)nbe t;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/C po :rxj:ys18s+vjxa,6 hx oe2 pyinting downward. What charge must be placed on the ball for8xosj:sv12ae h:6 +pxyry,j x it to be suspended?

  A foam ball of mass 0.150 g carries +;n+wtdimxkr *x *k; 6/lk zaza charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended agains6xki t*+;am*xd lk /z+nzr k;wt the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magzkw7 c mboa30-g1 alh9nitude of l917cza 3mwgh-0ka ob the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 l*o b/ m9o8xmjwpt g7*cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the cen/ tow9x 8 *lo*m7bjpgmter of the sphere?