State the law of conservation sc6hl8 jl0* gg ll2q(iof electric charge.

  Is it possible for two negativ*xmr3onl7x 3 c5shpi;e charges to attract each other?

  Is it possible for a dfun8p ykdaw v443l: )positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk.f.qpag23u p :s During the process the glass rod acquires a positive2u3q fpgp.as: charge and the silk

  A proton carries a

  The model of the atom shows c98 wl r5vhsw:a

  A neutral atom always;u/isewngphiqmo 72vdf0;m 1 +2 v*qj has

  An atom has more electrons than proton( kryjv 2pcmh5.;vm7 is. The atom is

  Materials in which the electrons are bound very tightly to t39xg6m8a aua 7/a, m1nlxz1+ pmhmszfhe nuclei are referr1 s8af9 xa3z1/px7ha ,nag+m mlm u6mzed to as

  Materials in which the electrons are bound very.)hdp za+1slg loosely to the nuclei and can move about freely within the materia)adh gsl.z1+p l are referred to as

  A negatively charged rod is brought near one end of an unchargegwfmu4i tpo+2(ixo(3 d metal bar. The end of the metal bar farthest from the charged ro( mwofu2ot4p g+x3(iid will be charged

  Sphere A carries a net positive charge, and ske8fy.+j5t ng o25q26iv u ursphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touch65of v5+uq 8unji2g2tekr.ysed with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod cxv oim8l89k(k.r ;e2 4pmqbg 6tas6ohharge an electroscope positively?

  An originally neutral electroscope is bri71a5w sr nxwp6jid; 4xefly touched with a positively charged g 4x7sa1x djiwrn;65 wplass rod. The electroscope

  An originally neutra*xa)rb jfqfhl )-w2 6(/o pfhel electroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electrose)fhp*)fwxoqah b(frjl2- /6cope

  A positive object touches a neutral electroscope, and the leaves separate. .(- qx7ummn-f 2yyssdThen u(- mnyx.sy2sd qm- 7fa negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed vj8wnc7f k)rno )85qn 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 ball rolls forward, but does not touch the negative object. At no time does either ball touch the negative object. What is thenf rjq8 nw7c) ov58k)n final charge on each ball?

  Charge is

  What are the units of the Coulomb cuo -p .t0u2t.itoxnw 8onstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distw4vaj( i ccv;(ance d. The first charge is larger in magnitude than the s(4ji ; vwcvca(econd charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed *grm26x 1mb/k ghtlo)near each other on an insulated table. Which statement best describes the electrostatic force bet*g/2t)lhxr 16gk omb mween them?

  Two charged objects attract each other with a certain for7xy)su, a*8oz d/b hzkce. If the charges on both objects are doubled with no change in separation, thezhz/a su)8o dxky,*b7 force between them

  Two charges are separated by a distance d and exert mk wrl;m q0fk05/, zfgbutual attractive forces of F on each other. If the chawgqfk/zm r5kf00b; l,rges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens ql54m6m - ti(k(lvaatto 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? Theavlmkta(6m(lqi-t 54 force is now equal to

  An electron and a proton are separated by a distance of 1.0 m 6;9 m8(kumu pwz4jsyf. What happens to the magnitude 4u(8;wkfps zju6mmy9of the force on the proton if a second electron is placed next to the first electron?

  An electron and a prfquimz 4oz0 ;*gj9y ahf) wb8k/,jx +hoton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a ) yw,g8f*fzbhi;xqho4 u/jm k9aj +z0second electron is placed next to the proton?

  An electron and a proton are separated by a distancs rm-l(ivk :jt1iox7 x60bsm 2e of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to ix7 ltsroi(v6j0b: m1xkm2 -sthe proton?

  A point charge of +Q is placed at the center of a+ rnt fp5e h9ro2i/0w2aqzof( square. When a second point charge of -Q is placed at one of the square's corners, it re5n/( tpoaiz22ro qw+f0 9hfis 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 positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral trian c hwl5m- yj04-qgzs8xgle. 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 th 4qc-m j5w yz-hlsgx08e 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 followinnrwz* zw9i93ag is not a vector?

  At twice the distance from a point chargfw+ ; dh6a;guze, the strength of the electric field

  Is it possible to have a zero electric field value between a negative auzqp v8p jw3rh b3)/0dnd positive charge along thepq3rbv)/d8 30 uhjp wz line joining the two charges?

  Is it possible to have a zero electric field value between two pos3kb dlfxwb 0fn4 n2w:w8u24n hitive charges along the line joining the two 2wkd0f3x2f8bl4w4 nuwn: n bhcharges?

  Electric field lines near psiudc8ck* /w ojiq+3uj6tive point charges

  The electric field shown3gtk qlu-(uk: pkfqo(q2e 6th8gr/ic-x o35n

  Can electric field lines intersect itiu4wh k 858ctn free space?

  A solid block of metal in elit-m( l;b7u3lvoi bd fx- w*3 4bu8u ctrd/du8ectrostatic equilibrium is placed in a uniform electric fieldfwu388m4b(u i ur- i/;lb- ctulvbdt3d *ox7d. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphehesx)u k u6-aiaq6k 1.re of equal diameters are each given the same charge, the electric field (E) midway between the a6u1suah- e6i .kxq)k center and the surface is

  A cubic block of aluminum rests on a wooden table in ) fi3 pg7-xe7/0nxtjfezy,rd a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surface?3-id,p gt7 zx /nry f70)fxeej

  If a conductor is in electrostatic equilibrium near an ejcv s:f y521keu5l7 u-y7vl jios)wl ;lectric charge

  A positive point charge is enclosed in a hollow metall d7b:tv4;o orxic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point ;dt4:rx7 voo bdirectly above the hollow sphere has

State three properties of conductors9osibr t0zpk9 dxk51 ( in static equilibrium.

State Gauss's law.

  The charge carried by one el w401u:ov /qoq ;/aiuah7fz ygectron 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 uw r6zw6e6qu *net charge of +2.00 mC. How many more protons than electrons does thiur q6u w6zwe*6s piece of plastic have?

  What is the charge on 1 kgd0x9 8jxo0f wa0 zk4gsmtr ,1g of protons?

  An atomic nucleus has a charge;v;5ieacva0g / iy *gf of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatedl 5svw7(e a9we by 1.5 cm, have charge values of 2.0 and -4.0 mC, re 95wesal7we (vspectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m ,uo.utmdgbgxp (4 vt(h11j3u from a second charge, and the force between them is 1.0 N. What is the magnitude of the second charge? xu(dgm4vpu(.13 tjog ,t1hbu

  Two 1.0-C charges have a force between them of 1.0 N. Haq;a. xy wicee hbez4 gi (l85*f/6m3sow far apart are they?

  The force between a f u8 qd 7 3)f7w+xnmq5-lgq*r ar1cpqp$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, expeasx1 ,r/t3fe wd a)mwja:+k(p rience a 1.0-N force. If they are moved to a new separapka +ertjs:mw)adf ,/a 3(xw1tion of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed onts7-1 c blkqfj2/;iga 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 electrostatic force which acts on the charge at the or;s -fbql2jcg7ia/1tk igin?

  Three point charges are pla: 0.qn5)s cac qgcq kim2a2ga(ced 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 mC at the 100 cm mark. What are the magnitude anain5q k g2qc0cgqaa.m: s c()2d direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the6: et)o5ds.6klxqm:kf ve55k mt -tv d following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.e.dm5kt5:ft vt5k)6lke d-xsvm q:o 600 mC at x = 0; 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 placed at the center of a square, and a second kq5nnk q3t5zo3yux i.a :3z)qpoint 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 c3zz y:i t 5n5k3naoq )q.3ukqxenter. 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 oh:si61;m yh c92:q4+mb q tr*;g jqmgyoyko 5nC is at (0qmo r mit2g4jogb 1o k6qyhh:y5*y+c:m ; 9;sq, 0). What is the magnitude 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 at (0, f.: vnac(o8al9 vmuy: 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direct :onv.amyvc f( :ul98aion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at t i :t-bp-zs-;x-if +p: wucipahe vertices of an equilateral triangle which measures 30 cm on a side. What is the icauzp-:if-x +ppti b w-;-:smagnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q a badbw98snwl y8d w,73 .qdi5cnd +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 acting onwd dd,9sy8niaw5b c7.83 wlqb 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. Whecb3 gci,3utf o13 f,ezre on the x-axis can a third charge be placed so the net force on it uteb of 3c,f33czi1,g is zero?

  Charge +2q is placed at the origin and charge -q is place2b) o01lrg wd-uihib,d at x = 2a. Where can a tliwg 0 )bruoh,ib-1d2 hird positive charge +q be placed so that the force on it is zero?

  A copper penny has a massk 5pm2aold3c45kfo0 f of 3.0 g. A total 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 for;ov7o 81z7hpg rnqdf./)x loace of gravity by the attraction of a fixed proton some distance above it. How far above th7/l) o8.ozqovdp r g7;h 1afnxe electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threv m+x5fhw esim)/0 +vyo9ih,tads which are 30 cm long. Both fx+0hi9vhv+ w,e) y omts/5mi 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 haszy 2*oyx+w6f d3.ivhk a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucl2*w .ykziyofh3d6x v+ eus?

  What are the magnitude and direction of the electri (w *,ty,fbkzhn3o/lac field at a distance of 1.50 m fro3 h/ybwf( ltno* akz,,m a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. W.55gqy: nvj nhhat is the magnitude of the electric field at the location of t.n5:g5 vjhqynhe test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction off. vu- okove+w/3eb7u lqn-sv 1f,5ot the electric fielu- v,k+oevf5lqsu -eo1 3tw b7/.n fvod?

  A 5.0-C charge is 10 m from a small test charge. Who b:t;+ qn2jrb7)dtzv at is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test 72+): ;zbdjtqrot bnvcharge?

  Two point charges each have/ge.55 e3zggg 1e84k cqpbx gy a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway 4.zeegbpg/g3yxq 1g5 e 58cgkbetween the two charges?

  A 5.0-mC charge is placed at the 0vfs7izd* -nc 3u* wz6i cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fiesz-c wiizvn *7u*d3 6fld at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sticu.6jk3a.9 bm v awcezek6g5 ;pk and a -4.0 mC charge is placed at the 50 cm mark. At what point.me5kpak wav36e;9b6. z cj gu on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and ffbsip(p m(60w h(q 6j5gf-*xv ;bbi w-7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between themqvgbfpiif6w((bwb5j h(0x ;m-*s6pf ?

  Three 3.0 mC charges are at the three corners o5qe (:lghvy w:f a square of side 0.50 m. The last corner is occupied by a -3.0 mC char(5h wqe y:lv:gge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are pl0t*v v6q5)y sn2 sszbbaced at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1,svbsnvt 5q0z) 26sy*b 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 whenfu .a;t(/bsxwxp l 50p it is placed in a uniform electric field. What is the magnitude of th/s (.;p l0atu wpfb5xxis electric field?

  A particle with a charge of 4vc) oli8(oc3 quqft+7 .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 6000 N/C ivd x.pc)0x n;pointing downward. What charge must be placed on the 0vi).xd;xn cp ball for it to be suspended?

  A foam ball of mass 0.150 g carriio;h4 s+ufr:hes a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the huh: +4s or;fielectric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Wh9a (m8c l.oi8td(xq khat is the magnitude of the electric field 5.0 cm from8ild a9 oxkhcm(t(8 .q the sphere's surface?

  A metal sphere of radi x *vpwkggsrx10p./9sus 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the centv9/.kgpsgsxwrx0 * p 1er of the sphere?