State the law of conservation of electp9a3ik wpg2 ,bum 9x8mric charge.

  Is it possible for two negative charges to attract e( h kx9+kpk4tcach other?

  Is it possible for a positive and a negative charge to attract eu 6:dtqj)de vw;zk0k*ach other?

  A glass rod is rubbed with a piz /0e:m/p w:jazvxvb +ece of silk. During the process the glass rod acquires a positiv0vv:b+azzp/x/m:w ej e charge and the silk

  A proton carries a

  The model of the atom 9po hamxdnde/f52ci(g 14si5 shows a

  A neutral atom always hasq6 ,ox.-k qiqx

  An atom has more electrons thanpl pp7aa8mm: . protons. The atom is

  Materials in which the electrons are bound very tightv g/ 3ubgchxu4;b*m kkc,yd1(ly to the nuclei are referred to au*;chbk cmu4(1g,g3 / vyxdbks

  Materials in which thk;rc* aeu d.ro-syi4bzvsf4 08y 1(whe electrons are bound very loosely to the nuclei and can move about freely within the material are sk 8 *crie uwad-1 0;.4oh4ysryfv(zbreferred to as

  A negatively charged rod is brought near one end kho sw12 t*z,qav54cb f-si0u of an uncharged metal bar. The end of the metal bar q0 ta,kfuozw*i1s-sh b4 2 cv5farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They zaexl0 *xv/2w are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is corr*l 2a/zx0xevw ect?

  How can a negatively charg3uln )5alogrv s(4bzxq.d o:4ed rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively8srq) x)dxhnj2q -,d1dxe:y v charged glass rod. The 2r ),vy xesjxnxd1h:qdd q- )8electroscope

  An originally neutral electroscope l1jogct/1n( 0j c4dxlis grounded briefly while a positively charged glass rod is held near it. After the glass rod is remove o1gcj l ct1jn4x0(l/dd, the electroscope

  A positive object touches a neutral electroscope, and thepgsdsgfhd70k2 ( y3xqp 3*7v z leaves separate. Then a negative object is brought near the electroscope, but does nosp7g27ps gkd3y(3h0* fdx zqv t touch it. What happens to the leaves?

  A large negatively charged object b/1t yc l.-ft*)rozjl 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 first ball, strikes the first ball, and stops. The first yb-)t* ljf zrl/c .ot1ball 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 condcz-. qbw6o: 0 pew)omstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dist*ycqrs573xls5 3k p ryb-v1ozance d. The first charge is larger in magnitude than the second chap l3s*1z vkxrb 5ocq35r 7sy-yrge.

  Sphere A carries a net ch-1 xahr 2ea(0/wbkw pmarge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force h0ea-(wr/ 2wa1mpxb k between them?

  Two charged objects cx d)rm1e;3umattract each other with a certain force. If the charges on both objects are doubled with no change in sepu;r1 m) ec3mxdaration, the force between them

  Two charges are separated by a distance d and exert mutua:co4lxk :ja)t l attractive forces of F on each other. If the charges are separated by) : :aoj4cltxk a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other witf5j lpgmq: :j9uu8z(3 4kkwqf h a force F. What happens to the force between them if one charge is doubled, the othewu ku4z k( :8gqfmjlj3p5f: 9qr 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 mt cg89 xcxv.lt+cmu q-+h5n :q. What happens to the magnitude of the force on the proton if a second electron is placed next to the first ec+l tx:.+nqhucc-tqx 958gmvlectron?

  An electron and a proton are separated by a distance of 1.0 m. What happen 5hbzey*rz) pa3v7,;m g7hj az 3:zcgqs to the magnitude of the force on the first electron if a second electron is placed next to the protoqhmb czzzy:ag; ,p )jhv 53zr73e* ag7n?

  An electron and a proton are separated by a distance gu r ta;)za.ejsen3.qrr *,snv 4w.2zjr p(7kof 1.0 m. What happens to theru2v (an*e k)j4nrw3zs7p.j ;rgzer q.s. t,a size of the 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. Whenr b1+ lenfe4piaulfp-j 2701n 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 fri -1uefnpj2n1l 70+4eblpa 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 p3r6w8ae1nl- f ktlydzj5 z 6rrf+gc2 (laced at the centroid of an equilateral triangle. When a second charge of +Q 3l+w 6 la5kg8djfe6tzfr1 ny -2crz(ris 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 vecto-,mdt. v.kj ;cmzq .kdr?

  At twice the distance from a point charge, the strength of the electri .48zj9rer1 de eelxw:c field

  Is it possible to have a zero electric/ qjd+ge5d mjbqw)1s1 field value between a negative and positive charge along thed1/qge jbs5jm+ )1q dw line joining the two charges?

  Is it possible to have a zero electric field va,mime76it q u9ld 7aa:lue between two positive charges along the line joining the two charges? mia,:7edtalq6m9 i 7u

  Electric field lines near psitive po0d: prsyf)- parg4)a mfo e0b2vbpyk3/il3a8 int charges

  The electric field shxuili1x)d6 m15hhhr; own

  Can electric field lines intersect in free space?ccgkebmu4 +6)

  A solid block of metal in zvdwpgd+dr - ri nw8(,tj2/q9electrostatic equilibrium is placed in a uniform electric field. Gwd,28jdw/+-gir n9 qptzd(rvive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal d16f qwnl) yvr/ psz;7tiameters are each given the same charge, the elec7z)qysl6wt1 ;fv /nrptric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a 9gnu0iw .o*dr3alh w /2ts 6scwooden table in a region where a uniform electric field is directed straight u9awo /sgin dw*3c206h.turlspward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriu,d z0c(q zd7.f) ma6 pegw djtsh.5/uim near an electric charge

  A positive point charge is enclosed in a hollow -yfe-wolj9r)mnqy *r8s 7nlr i4/xx ss8 84n rmetallic sphere that is grounded. As compared to the casenjnx syn8 r)/e-4srm 9l74fqyr *lrsowix 8-8 without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertik;k t:1k)2 dzdl9tcc ses of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one elec)qc;zlpa0 um( tron 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 mori 7h/-e1.q:w ofaroq*dzf 9 -hasyy :le protons than electrons does this izh-qe *h:/rflaqy f.9da7o 1w:y os-piece of plastic have?

  What is the charge on 1 kg of pr)rq; mt gfg62yotons?

  An atomic nucleus has a o w46.api +9j,kn b4a rkjn+zlcharge 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 ofb.; ja8 wfoiu2v.er9s+ tr2yu 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betweew;2v ufiua y. +rj 8rb9eo2.stn them?

  A 1.0-C charge is 15 m from a second charge, and the force between them+ ptj6dw: ,.e o)bjfi2rda :te is 1.0 N. What is rbjw2ida6,j+dp: . ote)f t:ethe magnitude of the second charge?

  Two 1.0-C charges havx rm+ opoh 3cga0q,6s(ox9 h.de a force between them of 1.0 N. How far apart are they?

  The force between a -63gv vc ewt2h(qs oja6qna/6$30 \; mC$ 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 yn,g ywsyb /lvt2,1,f6 drj-q force. If they are moved to a new separa6f ,g 1y-2t /sbnj,rqw,l yvdytion of 8.0 cm, what is the electric force between them?

  Three identical point cha x1 epmsr;z,0-f4n wfyrges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 c4z1;rxp me,-nff sy0wm, 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-icftqj9 hj+ : 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 electr:h q-9tijf cj+ostatic force which acts on the charge at the origin?

  Three point charges are located at the followi*o(kc v u9:7ttkxxb:c ng 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 the force on the 3.00k(x b:o7tctux *kv9 :c-mC charge?

  A point charge of +Q is placed at the center of a square, and a secir:sc*m 4u *ciond 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 placed at the lower-left c iumi:c4 *src*orner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m);5t0qolna mcg 7h 16a9o Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 7 n1lactma0 q56o9 hog5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is lnnz22z df4u;x/ jd1u at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is th zdxjd2 fnu /z;n41lu2e 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 equi(hb.gldih u2; lateral triangle whiu l(b;dig2hh.ch measures 30 cm on 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, whichbkqmln*c qmv ;7c rb9,i4+ n7h 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 that the electrostatic force actbr4kq ncn7;m* hqicmbl7v9+ ,ing on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4dfznrsra8;j7 .zll ( -.0 m. Where on the x-axis can a third charge be placed so the net force on it is zeror;. nf s8lajdzz (-l7r?

  Charge +2q is placed at the ori3q k;g(i01ur ca0lz 0a*ohe2 e af/g6tt.ua gwgin and charge -q is placed at x = 2a. Where can a third positive charglqg0h a10c;k/ gaur0t2ga f(eez 63o.* iauwte +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total ofkciaoy59iwo, m23dn; $4.0 \times 10^{12} \; electrons$ 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 o a/ugz)r1(kyxf gravity by the attraction of a fixed proton some distance above it. Howzaxu/r yg1) (k far above the electron is the proton?

  Two 0.20-g metal spheres are hung from r 4zdmuv8r1 2. o9pjyga common point by nonconducting threads w 92.18r 4jyvpmg orzudhich are 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 thf y*5jcs nnf*.ovg m:/e magnitude of the electric field at a diof:j5nym/gv* s*nc.f stance of 1.0 m from the nucleus?

  What are the magnitude and directou 6sm8k, nky s:p2he1ion of the electric field at a distance of 1.50 m from a 50.0-nC chp:,u8y kenk 2 m6s1shoarge?

  A 5.0-C charge is 10 m from a small test b j8(yk7qb0y:vrgsj-srf e0) charge. What is the magnitude of the electric field at the location of the test chak)-j7qb: sgbv jy f0ry(es8 0rrge?

  A 5.0-C charge is 10 m from a small test charge. What is the9mqfk aw;h gudm -)p/nfe0 xg,):h1gd direction of the electrpmgkf0:; )1wm9xh nqagf,ge/udd )h -ic field?

  A 5.0-C charge is 10 m fr5+rn2 :8,iv1mtahem:deha5 ya hk qt)om a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at tm 1h:yita+k)n hr, e 2aqt:8mdaevh55he location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a dic gsz o9x51 oaydt.yxo-d: h /038-wlbhes(ypstance of 4.0 m. What is the electr-thcpxoys91x5ywdo0 asob -.3e y 8g/:dl zh(ic field at a point midway between the two charges?

  A 5.0-mC charge is placeye+scz mh/ iz;:68 rydd at the 0 cm mark of a meter stick and a -4.0 mC charge i;myr8s6i /dhyc+e z :zs placed at the 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 meter stick and a -4.0 mC cha:bq io fb3yg t8s dts:b84ya)(rge isab4t(gy idf:b8q) styo3 8:bs placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. Whs7b-zisoiqrjw,t o (as:4r06at is the magnitude of the electric field at the point midway between,(7:bt4ro6s iis0srzwq o - aj them?

  Three 3.0 mC charges are at the three corners of a square of su8p mf8/zf -bmide 0.50 m. The last corner is occupied by a - -8mm fbpfzu/83.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a sid-/jteobn6(b1d cl- yj e. Charges are placed at the corners of the square as follows: +4.0 mC at (0ne1y -jo(j ldcbtb-6 /, 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 cha-t1 s/w skpsti8;w5m xrge of 5.0 mC when it is placed in a uniform electric fiel 1xpw/58t wkim;t-ss sd. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC1 .,sqzi3z j(ej/bx 9zkhf 2ek 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 electricen:y mp ,zq7.c field of 6000 N/C pointing downward. What charge must be placed on the ball for it c:n7 qzmy. ep,to be suspended?

  A foam ball of mass 0.150 g carries a charge of -qbu)- tmy3h9wgmqzkwt 5 g0; 7b1;ork2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude ab3)km; mt50yzwg ro-1b htq kw;9 u7qgnd direction of the electric field?

  A metal sphere of radius 10 cm carries a charge5o :eui9a2tz *:piosujxkw1vx (;8ie of +2.0 mC. What is the magnitude of the e:uivi9w82e* 1ujk oia p(:xos;tx5 zelectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elec qfdp h;rt95 ;phm/fl:tric field f h5mqtd;rlf p9/:ph; 6.0 cm from the center of the sphere?