State the law of conser7sx; bit0)b25 f td xef r)0m/fskhm7jvation of electric charge.

  Is it possible for twoahch;w msg9o+ t(l;4 gp6+t tg negative charges to attract each other?

  Is it possible for a positive and a negative charge tvo j/kg8r.bb2y3ly2 z1p*d6 wlnum d,o attract each other?

  A glass rod is rubbed with a piece of silk. During the process the gla3u7 g6qhp5.h weda;yyof +az n)yj)) fss rod acquiy)f.e6f wd ;+h)hpq7o 5 ya)zgau ynj3res a positive charge and the silk

  A proton carries a

  The model of the ato m8nxd 3w lt*tlcd885nh +j+.8buk xurm shows a

  A neutral atom always has7f olo0s(;a8uo l-d xt .ly:rt

  An atom has more electrot:* ftt x)le.hns than protons. The atom is

  Materials in which the electrons are bound very tig, tbxa :ri* cm ;n6,6w(eabnljhtly to the nuclei are referred to 6wna eba; j6nimxb:r*lt,,c(as

  Materials in which the ele k32m l0// +tdlkkrjuv*b j7flctrons are bound very loosely to the nuclei and can move about freely within the material are referredvm2 kd*k+jb fr3/0ljutl/kl 7 to as

  A negatively charged rod is brought near one end of an unche;v;lg-z xvgu4*fd9 warged metal bar. The end of the met gu-dx9z4egvfvl;;w*al bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and ts r3y oa22;0thela9w sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which stosatart3ew ;l2y 29 0hatement is correct?

  How can a negatively charged rod charge an electroscope positively?ay(yel c(z1- k

  An originally neutral electroscope is briefly touched with a positively char), v jnc,p+hxyged glass rod. The el,+py j,hxcvn)ectroscope

  An originally neutral electroscoph .xj;0cgp* o-s isxodw1vwqr0x h/3+e is grounded briefly while a positively charged glass rod is held near it. x+ws vxi0pwrq-.1shg c*j0odx/h 3o; After the glass rod is removed, the electroscope

  A positive object touches a neutral electrosctex/ j7;bn+b dope, and the leaves separate. Then a negative object is brought near the elec/tj de+bnb x7;troscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutr7ewsc::oep5y2 nl v6t al 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, but6:vene57o: pw2lst yc 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 04um)8dtsw a8xcl2 ndthe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distancaclv+:szu2e q g 0l3me4pb3*ce d. The first charge is larger in magnitubqe 2gsluc3 : 3+vpae* zml40cde than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near e v0us9f)6v0 yrfjyu3kach other 0jkfvy6 f) 0vu3uy9sron an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. I).wy qxo)l (vff the charges on both(yfq)oxl. w )v objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert m ia(z7g yu+2(vr g+mhi s5z-gqutual attractive forces of F on each other. If the charges are sepgzggi5rs -7v u a(y h(i+m+zq2arated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens tg8f+kinx6c wbh .p;c27bl3v c o the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is 8 b+p;7kchwcxci3.fvb62 gnl reduced to one-fourth its original value? The force is now equal to

  An electron and a prot loh 1wsr6+,q4xjga2 non are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed +6r qh1 j ,aos4ln2gxwnext to the first electron?

  An electron and a prb*lmt 8ncdkgfd9 / ,l9oton are separated by a distance of 1.0 m. What happens to the magnitude of th/ nk,dfl9*9lb gdc 8tme force on the first electron 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 happen/p )h c/jsa*)qw:j g; xs.zb:uvj2a sks to the size of the force on the proton if the electron is moved 0.50 m closer to the proja /jss:azg:) jps2k /;xv.c q)uhb*wton?

  A point charge of +Q is plac o-n:stuuc vy69s v8l7r0tk/zed 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 tnkov s6z ur/7-v0c l: uy8st9the 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 equilateras z8vaq hj p45kta)1i,o6 js0sl 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 magnitude ios1vatspj qhkjs50,)a z684of 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 followin5tl,ws- p y4wd*eh/bw wd,*vag is not a vector?

  At twice the distance from a point charge, the strength h3gtj:f5-5+ b cndpmhh -ydm7of the electric field

  Is it possible to have a zero electric field value between a negative and positilm o18r,+r-+q f cvogfve charge alogro,o1v mrfc+ 8+-lqfng the line joining the two charges?

  Is it possible to have a zero electric v f1l/m,-5nmvc wq1 a.ps8g kofield value between two positive charges along the li v gs 1v,.8-1 /pkmlwqcfaon5mne joining the two charges?

  Electric field lines ni ukx6.bc/+ a8p;yge:ff bg,sh t)w r-ear psitive point charges

  The electric field shownkwky:ay; - 3pu

  Can electric field lines i b39pe,*ole+gqf nta8ntersect in free space?

  A solid block of metal in electr lys;hd55ehz 56 rcu-sostatic equilibrium is placed in a uniform electric field. Give a statement c;ce srh-uhls6d55 yz5oncerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere ofo;9 f1 a. 6:6z tvawmuq;mafel equal diameters are each given the same charge, the electric field (E) midway between thfa ; of vl6a.m w6u:1eta9zmq;e center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unq90p6dk1 0lb fzs rl/ ujb7tkzu(wg54iform electric field is directed straight upward. What 7z (upu9wlb f1j 4r0d0kglksb65tzq/can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric rhv r8,xsh)/ acharge

  A positive point charge is enclosed in a hollow metallic sphere that is:-naolkwqrj3ic8mcuw58 7 *t grounded. As compared to the case without the hollow sphere, the electric field at a point da t3 c:q*imn-w8 8wjck7lru5oirectly above the hollow sphere has

State three properties :8m dpjm v,gonhmbc/,+ +crv,yvor nl3.i*( o of conductors in static equilibrium.

State Gauss's law.

  The charge carried by rxq h sk8 wn- 8ds9fhb-lu6/(aone 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 net charge of +2.00 mC. How many 9) f/4qr-ouvwvh( a2llxo sb2s97j ox tdy t*6more protons than electrons does this piece of 2fat4 h9) l9 t vs2-l7*vwjxyrxo6odo(ub q/splastic have?

  What is the charge on 1 kg of protons?8 z p2xshq,ddg12q;v mwp3 v.q

  An atomic nucleus has v/e;nh,( d(dfcu s 7sda charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatra sjrt)/03*i1ejcp0unaxtb9,h1 n xed by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of j) tc0 0x1a1i93rrp a,nhn uxt j*/besthe electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between themsjo1hg -dwpap)ib0,jo. m0l: is 1.0 N. What is the magnituo0j pg10aodsbmpw-., i)l:hj de of the second charge?

  Two 1.0-C charges have a force ,bz .u gxdtu3,lxop-2i 2gpbmu:30ev between them of 1.0 N. How far apart are they?

  The force between a qpi 4lk nos;,+ewrvd*; 2dm(kx6b4q u $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, in3yl0za9r3y q/lt m2qn itially 2.0 cm apart, experience a 1.0-N force. If they are moved to a neqy/ 0n32z alrl3ty9mqw separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed ong 7 .z)3honn t3eq; :7,ckveh8l) yjl1iwzpzz 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:zcw e ;jvoh,3ni 7.zkhqze pl8t)) zg37l1yn of the electrostatic force which acts on the charge at the origin?

  Three point charges are placenu*7bnt) )hjd t-ces3d on the 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 ch3 sj*d )uen-t7bn)tmC 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 at the following posit 9ce 0(keew5tyions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 05ektw y0( cee9; Q3 = -5.00 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 h j4xxp ehw7lrlxn5te)v- ,w,ex2j*6placed at 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 -rv24 j5 7lx*e)6heln,wwehxx x pj,t. 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 5cg 91myb vdpqyd:q0ytqd.; 9 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the nq qy dq;05.by9 c91dm dg:ptyvet force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is 4 ahw*)7p mhcoat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force4cp w*m)h 7aoh on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices o-9t ,eg zxnjy)f an equilateral triangle which measures 30 cm on ajt nx)eyzg,9 - side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges oooohh 6 q6cqu7ge*78hf +Q and +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 such that the electrostatic force actiqo7o8 g6c7u*o6hq hehng on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Whda ;7)-tye hhzeeh4qy hjo 9f+sssus :r83; p:ere on the x-axis can a thi e sqduyspshhe:-3: f7)a8o r z4hs;;htj9e+y rd charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin awb 8r1k7n (zum+ks4hd xi rp08nd charge -q is placed at x = 2a. Where can a third positi8w rr7s1+nxu(4 kb8i0hp m dkzve charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A toy s/a94x;rmw jib;n p4tal 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 the force oc8wsm x+6pyv/f gravity by the attraction of a fixed proton some distance above it. How fvycpxm8 6sw+/ar above the electron is the proton?

  Two 0.20-g metal sphnu. d. s.umwm0 )1tbcweres are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and th.b)mu t sn.cd w0w1mu.e 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 aw6(ia9ampn 9+ ahhe1 k charge of +40e. What is the magnitude of the electric field at a distance ofin6am1 ha(ew9+hpka 9 1.0 m from the nucleus?

  What are the magnitude and direction of th9w0e * vczipf,e electric field at a distance of 1.50 m frof,eiz*c 0w9vpm a 50.0-nC charge?

  A 5.0-C charge is 10 m from 5 dzwsj+qa/9 +z: dwk8jju5zq a small test charge. What is the magnitude of the electric field at the location of th5 du:wd9+sjzk8j+5qz azjwq/ e test charge?

  A 5.0-C charge is 10 m from a small test charge. What is67 m.khkh q78e 1ovrcg the direction of the electric fi groe k67hhqmcv .87k1eld?

  A 5.0-C charge is 10 m from a sma f r*ktp,.gs r(sz9qx8y5iv4i2e f)klll test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at theeyk4isk)vr qp f,8(zli.*r 2 5st fgx9 location of the test charge?

  Two point charges each have 6,k ennh *w1.jueb-oo a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field aeouj,1.- *obnkn eh6w t a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mCv;-aqdy/ er :a charge is place;v/-aeraq y d:d 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 mu6v 0 kfsm;j)zn op:y.eter 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 ele60jzn ;:up fy.oskm)vctric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 1 1s21(bz :lp44orylb lm re0 sy:qdzkm. What 4lp:s(e2zrmy bzl1 dyo :1kblq0s14 ris the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of aerj7y 9kr9d r8;3hnp mbz iz3y/;l05vqbpw o( square of side 0.50 m. The last corner is occupied by a -3.0 mC charge.n w3p9v( 3z9kerbqlpb y orhr/87d;;i zmj5y0 Find the electric field at the center of the square.

  Consider a square which ita +wczou*c 8+vkkm* :s 1.0 m on a side. Charges are placed at the corners of thcucw+za8 * vktk*+mo:e 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 magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when ito wew::+(zrfi is placed in a uniform electric field. What is the magniie:ow+ :(wfzrtude of this electric field?

  A particle with a charge ofe:jgs -crn, )w 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 3 0zsuhu0d l8nx4x 2as;wn7hr6000 N/C pointing downward. What charge must be placed on the ball for it to be h8s40;3 n2zdx u7nux0s ahwlr suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. nss tr,,.v0. nxsnuyop .aq qok q7866 The ball is placed inside a uniform electric field, and is8,6qxk6s.rayp noq s non.s0, ut7q.v 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 charge of +2.0 +7d5i 9 rtat0qzgvam9mC. What is the magnitude of the electric field 5.0 cm from tg 59iqmz0da7 va +9rtthe sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is thetp;qe 5 8wmvy0 electric field 6.0 cm from the center of0 p5t8qmvw;y e the sphere?