State the law of conser//arjtbqq) knq aq-vl )6 9z9mvation of electric charge.

  Is it possible for ty*h:9nl :nd )p zlc,fr7j/n sxwo negative charges to attract each other?

  Is it possible for a positive and a nehh8j5 f .8mibh4px vj+gative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glassuarlgfuv( 3wuh; i9r7o 4d9yp9 k(m /s rod acquires a posisr;39g(y4puovu /r lik u(9 f7mhd9awtive charge and the silk

  A proton carries a

  The model of the atom(: -sn kbp.pi6z9k+ljhc lmt9 shows a

  A neutral atom always ha+85sdjx+ ezu jn m7t+ldi-kt4s

  An atom has more electrons than protons. The dewp8b4 c+ sd(s *z*tratom is

  Materials in which the electrons are bound very tightly togqk i*hwk-*q2br dp 8) the nuclei are referred k w*gd*-qpkib hq)2r8 to as

  Materials in which the electrons are bound verq.4i f8k ofaq4 twbx5pcmx*/4y loosely to the nuclei and can move about freely within the material are rek/4*5i8taxxw pfcq4 .bo f4qmferred to as

  A negatively charged rod is brought near one end of an unchf;: y*z:uxy)sz dvt5oarged metal bar. The end of the metal bar farthe *vsxy:f;y)zo :dz t5ust from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pvje 83(zvwlon n.td up e-++,qlaced near each other on an insulated table. Sphere B is briefly touched with a wire tv(zvjd e- u +n.o+3,nep8lwtqhat is grounded. Which statement is correct?

  How can a negatively charged rod charge an electror6m+u l l8fx4iscope positively?

  An originally neutral electroscope is a6lj de( 6wj8ubriefly touched with a positively charged glass rod. The elee8(jj6l adu6w ctroscope

  An originally neutral electroscope is grounded briefly while a positively chargdad* e8ujd09 gt/p( hxed glass rod is held near it. t8dg pa*/ xuh0(j de9dAfter the glass rod is removed, the electroscope

  A positive object touchesnj opqe33n v*zt8/n j/ a neutral electroscope, and the leaves separate. Then a negative object is brought near the elen/ npj3 tv3/neqoz j8*ctroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. hwpqcr0 2ml)2d5lrab5p w 8 n0A 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, strikeh8 qc0wm)rl 25250lnb aprdw ps 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 Couloc/rp3h xbzxu088 c7f5ctn wf8mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thrhf9 . gl j;be +dv/*;40svzabcju od(e first charge is larger in magnitude than the second u jo;b0fdrglvdz a/s h4b *jec.+(9v;charge.

  Sphere A carries a net charge and sphere B is neutral. They ardj;( 9g rg go 7yye.mjp*7yr;)cm-kw me placed near each other on an insulated table. Which statement best describes the electrostatic force between thewr )7;mkgor;yj7mg.( g *cdp-y 9e myjm?

  Two charged objects attract each other with a certain force. If thc- gpz::h/azmz- b4cne charges on both objects arepm:b g zz/-ccz-:na4h doubled with no change in separation, the force between them

  Two charges are separated by a distmx xp,ew9w a6/(;oea rance d and exert mutual attractive forces of F on each other. If the charges are separated by 6exa9w mepxr,/ow;( aa distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with anw04i g -wpndlgv 0z3)gww/m5 force F. What happens to the force between them if ow3nvggwiz -ngm dw l) wp40/05ne charge is doubled, the other 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 upu q2(p j9)mzseparated by a distance of 1.0 m. What happens to the magnitude of the forcepu(2pq9) mj uz on the proton if a second electron is placed next to the first electron?

  An electron and a protonom7c *ruax9 d6qbb 3(g are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to theg x6c7r9(qbaudo* 3b m proton?

  An electron and a proton are separated by a distance of 1.0 m.z hdt4nmd:n35)p q; gs What happens to the snz5 d;pdn:g3 ht)sq4m ize 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. When a se(oi mge9nug6 :scttci dt )260cond 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 te(ct s2nm 6gdiu96oc t )0i:gof -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 ce g.nfk8)o. ux br)g;gjntroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangleg.;)kxujg f) .8 grbno'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 veh*mviq 4.j .fbb43.mm xm /ithctor?

  At twice the distance from a point cha,xf9c*cudkc7 p qk-.urge, the strength of the electric field

  Is it possible to have a zergkxwl acz4*v 6fzb/9q02 tw)fo electric field value between a negative and positive charge along the line joining thez*v9/a )xf6zqftw w0gkc lb42 two charges?

  Is it possible to have a zero electric field value betweenj dbrfz p565 lno*v4)34ebo pv two positive charges along the line jnv*4eb4p) lrz op6 jfd5ob3 5voining the two charges?

  Electric field lines near psitive point za t ;w nk7h66ai/mgvw;nu-q9charges

  The electric field sh-rl )n4 d6q0pflrv ez0own

  Can electric field lines intersect in free bzon 4nd6*tl0 space?

  A solid block of metal in electrostatic equilibrium is placed in a us*dg8x7vou6 keh 8o *rniform electric field. Give a statement concerning the electric field in the block's interior.u8dgxseor87*vohk 6 *

  If a solid metal sphere and a hollow metal sphere of equal diameters arev6yn a7c: 2cjf87mlum each given the same charge, the electric field (E) midw m7 :cc8n uf7a6mj2lvyay between the center and the surface is

  A cubic block of aluminum rests on alz,3ty1zt4. b vz q5vy wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the blbv5yl, t3zv y .q1tzz4ock's top surface?

  If a conductor is in electroh1qk1 pmh2 m3qstatic equilibrium near an electric charge

  A positive point charge is enclosed in a ho61(vojmc6tlm;lqub 6fn. +kc llow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directkv 66qlj;6n1u.l (o m ccf+mtbly above the hollow sphere has

State three properties of conductors iaukv,lz)+hpu 9wi- k(n static equilibrium.

State Gauss's law.

  The charge carried by one electron ij ( 7wql)d;zjkf5ps 5rs $e = -1.6 \times 10^{-19} \; C$. 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 more protons than a :sql-da7 5g,xqwt 4 y+i-oywelectronxl goa+-qdyt4i,wq7 sw :-ay5s does this piece of plastic have?

  What is the charge oa oaj/s 7f,n4sn 1 kg of protons?

  An atomic nucleus has a cua oxx8ux0fcye/*y 6yha-;/j harge 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 valuefmg tr1(kv06rs of 2.0 and -4.0 mC, respectively. What is1gfr(k60t rmv the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the qxu /d( evhwfel8 ptn4/:3ek) force between them is 1.0 N.fl8qe3 tke:phve4x/ (/uwdn ) What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1+bbh h6jh2:enp 4n7xr.0 N. How far apart are they?

  The force between a yjz.wz u+r2r28 j y0fh$30 \; mC$ 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. *65tcp 6jelvuIf they are moved to a new separation of 8.0 cm, what is the electricpluc65j* et v6 force between them?

  Three identical point charge cf6d qnk1f96ys of 2.0 mC are placed on the x-axis. The first charge is at the origin, the sec nqd69fy1fc6k ond 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 origin?

  Three point charges are placed on the x-axis. A charge of nt cha0g23q0e+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 acts on the charge at the oneat0 g032 hqcrigin?

  Three point charges are located at the followin/)*,ksbiheu8ot h g6o82wtyf (7aj dvg positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at ak, yho v*j(d eb68hsg2)ouit8w/ 7tfx = 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 i /r-( ltmh;r5ldj97 esrwt:xus placed 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 ojrt:d-/he t; l(mr7w r59usxln 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC biv,w3ky(t60 jopl th1.y :xqis at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitudk.bx :jt0(3whyit6p1 o y,lvqe 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 (07 -hle6ll4 hlseeqb,( kf c t7z/tw4-j, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net e/l4q76 lkt-- sz ltwf ce b7(,lhj4heforce on the 5.0 nC charge?

  Three identical charges of 3.0 p u oo xj;q;g6v9wyk9tl2h/u;mC are placed at the vertices of an equilateral triangle which measures 30 o h ku l9yupqt;/ vwog6x9j;;2cm 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, which are separated lpt/gca:l8x8xr; t 7u 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 87u: cttgxl/axpr8;l acting on it would be zero?

  A +3.0-C charge is at lbgqf( 2j n:qr.9ld7lo 3tp h6the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third.6d:t(phlb 9f n3rl qgjl7 2qo charge be placed so the net force on it is zero?

  Charge +2q is placed at the ocgg1 a l qabhjppi3n/k2.t -79rigin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so pi-n2t9cg3lb 1h7 a akj.g/ pqthat the force on it is zero?

  A copper penny has a mass of 3.0 g. A total oy48m8 r pkh43rblax2pf $4.0 \times 10^{12} \; electrons$ 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 t.7t 7e6 au5dpr (7ce4xu1dh eekd,hece of gravity by the attraction of a fixed1(xeheddu 7 t6 rec7 eha, ktpe7ud5.4 proton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by t7/3pix du ct)nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle betweedtu i/ cpx3)7tn the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of the electr8/lu+psibf: -jq p trd;u76xc ic field at a distance of 1.07+r/d:pf x;u qu b8ci-s6lptj m from the nucleus?

  What are the magnitude and direction of the electric field ( me8aep)xbf; at a distance of 1.50 m from xe p8mb f;e(a)a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of ta(vv ih-uw0 gjb( tg30he ewt3g-hj v0(ig(bv a0ulectric field at the location of the test charge?

  A 5.0-C charge is 10 m f q6c0 a(za ky4jeuxd9)rom a small test charge. What is the direction of the electric fielqj()a9 d60 4yazc ekxud?

  A 5.0-C charge is 10 m from a small test charge. Wsx;i8vpj/uuy fbz 2j665 2l(o o5bie dhat is the magnitude of the force experienced by a 1.0 nC charge placed at the locati;6jvs u o5ob2 (8jezi/f2bxlyupid56 on of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance wqy5c b9b(*m )r iinq2of 4.0 m. What is the electric fielib*rywb) nq9q(m2 c5i d at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm 381gy dymlvaki(2(. dvsm fp6mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Wvyfail6g (m .dd s2k3m( 8vpy1hat 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 char+g6iu oeuz 2e/e;zn7ege is placed 6e+ueuezni e/o 2gz7;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+ ol,hd 7a:wnrhgt3i b(fn ujq2u ;)z9 placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway b( )ahr;3no7z:djn,lw9 i2gfutuh q b+etween them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The 0om7 1v ho8vmympx0wei(r11elast corner is occupied by a -3.0 mC charge. Find the electric field at the pmy w011m v0o7vr(ieeom x1h8center of the square.

  Consider a square which is 1.0 m on a side. Charges are,lod2o24j mewd17tl:5s:wruf8n zjc placed at the corners of the square as follows: +4.0 mC atfc7jn wtd:ws od1eml2: 4u,l25o rj8z (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 actsdqrp)y6oj 81uw:a5dp0 qo ; dw on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fieluoq wjp)a8ow dp01y:d ;r 6q5dd?

  A particle with a charge of 4ba1 6+kn- zzqtu b)viiuoe1 n: k*-*8zmf9jlh.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 electerw1atgic lypb/a)k ou706 3+ ric field of 6000 N/C pointin+e oa r 71 cw6)ay/pitgb0u3klg downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge o:g xmi h(ppytliddi79+68p5s ++dcbgf -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force oft7pd b mp+ls(9y58d:+ +hxgidp iigc6 gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm c1lw7xfi cm -c4arries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cmm-7wc xc14fi l from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a chaqss-c yhtc8i rc7-d .;rge of 3.0 mC. What is the electric field 6.0 cm from th7rc.d8;c -i hytqs-cs e center of the sphere?