State the law of conservation of electric ch 6v gk 2/ffq9(nczub(warge.

  Is it possible for two negative 3j6:oj3 d 9bz:pawfgqj2oe)z charges to attract each other?

  Is it possible for a ph.pu hh ae(3o4t-0wb rositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the 0wk-(. ygn8.evivrpi8hjf( pglass rod acquires a positive in80 wp.ieh v (gkfy. v8jpr-(charge and the silk

  A proton carries a

  The model of the atom3q ;6 n )s9zaxkxt:cot shows a

  A neutral atom always lf;x71nt 2av ilpnq )+has

  An atom has more electrons thands) 5 op+icl7j63pz 5yuwnwr2 protons. The atom is

  Materials in which the electrons are bound ve4gbw g 6l9eo,6 lfs,usry tightly to the nuclei are referred 6lo6,,sf eu9lg4 gw sbto as

  Materials in which the electrons are bound very loosely to the nuclei andyf5sp bh7pvc b (q(;dwpm)8df8l hw,0 can move about freely within the material are r7bd8lymf,q pw f;)h p0(swh8b5dpv( ceferred to as

  A negatively charged rod is brought near onk8h ere: x:)8wsgsb7hzp/t 5ne end of an uncharged metal bar. The end of the metal bar farthest ftx hw8e z/g8epn)br7::h5 sksrom the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B i* 9iv)allw )irn ymp;0s neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which str90vpmlay)l iw;ni *)atement is correct?

  How can a negatively charged rod charge an.k1ig,u t vtg2+ilp:m e,t .lhd51 cem electroscope positively?

  An originally neutral electroscope is briefly touched with a po-vgu9. /v.dtnwhpb -w c/w*kbsitively charged glass rod. b 9utwp*/g/v .nwchd-w.-v bkThe electroscope

  An originally neutral electroscope is .oy,*joqz u0hgrounded briefly while a positively charged glass rod is held near it. After too0q .h*z yuj,he glass rod is removed, the electroscope

  A positive object touches a neutral electroscope,38 ppc). zxeid and the leaves separate. Then a negative object is brought near the electroszpeid8)cp x. 3cope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed ouru+ r; k,,etyn an insulated table. A neutral metallic b+uryt ;r,k,e uall 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 the final charge on each ball?

  Charge is

  What are the units of the Cyq/wa/e);u: ah vfl ;m7gl)d2u6vgun oulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largxv 2ymh3h7vru;c :tk 3er in magnitude than the second charge. vtc:3vy3 72h;uxh mrk

  Sphere A carries a net charge and sphere B is neutrygcu:2qt ;s i8al. They are placed near each other on an insulated tabl2sc 8yt;:iqgu e. Which statement best describes the electrostatic force between them?

  Two charged objects attractvj+v-:,f7 ti1pa jxtt)sc6lg(dv ox6 each other with a certain force. If the charges on both objects are doubled with(:txfs1o dv6)xp6itj at ,vl-c v gj+7 no change in separation, the force between them

  Two charges are separated by a distance d and exe(m9tlb l-5i,vrwh z*vrt mutual attractive forces of F on each other. If the charges are separated by a distance ofzbr l9hv*il5-t,wvm( d/3, what are the new mutual forces?

  Two charged objects attract each other m8gc;wro ftai6mv1(o/2z t p3sqb -c/with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centert/r3p6sioz( b;tmmofwg21va/qc 8-c s is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a dis9oi)0aa8 edlff)3kxd6 q+ w emtance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to ka8o+xad6fd) 0fm ) ele9iwq3the first electron?

  An electron and a proton : dwx6nz/y, zx stks6.are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second elec6 sw,:z6n dsxxk y/t.ztron is placed next to the proton?

  An electron and a proto t2bg9 dvlg pgp*+6rln.ha:j9 n are separated by a distance of 1.0 m. What happens to the size of the force on the 9l.j2:bh6p d pgr9 a+nl*vggtproton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of 77u f0so;zh.m*tjpvxa 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*mth 0.zx;jf 7ous vp7. 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 plg-hpg4p b3q )d wr4g*y+m (0vcg/ozkoaced at the 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. What is twdg-g 4 *p)qo0yc3+obzr 4k g(h/mg pvhe 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 n (8wyo ru+vzx; o*gs-dot a vector?

  At twice the distancqa)dy,rdh-m5l*njv ;wa):8 xx y; ptwe from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value betww. nf.u2uw4lh 14 wwekeen a negative and positive charge along the li4he wu.wlwu fwk1.4n 2ne joining the two charges?

  Is it possible to have a zero electric field value between two posiog:+av p /qgt-tive charges along the line joining the two tog+p-:gva q/ charges?

  Electric field lines nenh rxnz4;q n4/ar psitive point charges

  The electric field sho p4*lc vs8r8 vt(wuyhsf(cs:+wn

  Can electric field lines intersect i1tu. ke2wc )obn free space?

  A solid block of metal in electrostatic e48i)t 8rqj.usb cwi8hquilibrium is placed in a uniform electric field. Give a statement concerning thec8rub8i8q4 ) si hwjt. electric field in the block's interior.

  If a solid metal sphere aptlu:.bcdy 0y;jc:8 eefszjnst*x .+ k -u2 o/nd a hollow metal sphere of equal diameters are each given the same charge, the ecusedsbt*.j /e: 2k;0u:pxo8yj. t l +fcz ny-lectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wova;tu69jn+zb k) +ao doden table in a region where a uniform electric fielajvkbna;9d++)o 6 tzu d is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric co*b2f8b: 9s e9lb63lsdo ogh vharge

  A positive point charge is enclosed in a hollow metato;y k 4)9siwese-t:egfk.cs8bp )9qllic sphere that is grounded. As compared to the case without the hollow sphere, the elect-yio4:gfp skk9 s . tt)eb9;qewces8) ric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibri3 l 75d-nxv2urs-sxqmum.

State Gauss's law.

  The charge carried by one eldp (xk qts v5k/yo)0-eectron 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 +a:0tw zzhw;u(dc /g,h2.00 mC. How many more protons than electrons does this piece of plaz(wc0 a,/g:duwtzh; h stic have?

  What is the charge on 1 k ;s0sm7o efv;(7xq11 zhaow w z9ig+nkg of protons?

  An atomic nucleus has a chaoi7,rr+ hzr(on hw*a1rge 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 cha9tj ly av3x+gum,t/smo5yym-p-3 ay 8rge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force byu8ov3 9m +px yg 3msaym-t5l /aty,j-etween them?

  A 1.0-C charge is 15 m from a second charge, and tb .m ji:.m- 2t8frpqmohe force between them is 1.0 N.jmmt-r qob:2.8ipm.f What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are thsynr-s6m;* a s/y)iz le.c3u. +caibhey?

  The force between a i8du 5vh5lrp0 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experie 2xr x;yf*tou9nce a 1.0-N force. If they are moved to a new separation of 8.0 cm,9y rfx*2 xto;u what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firsxq03kymyk 3- um 3tdj,t 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 elec3 mxq-y m0,kujt3dky3trostatic force which acts on the charge at the origin?

  Three point charges arebylyj2.n; 6c 2 wuyx4n placed 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 cmcny;u y x yb64jwn2l.2, 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 origin?

  Three point charges are located at the following poszd 0;zmyctf2t7kn1k *itions: 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 oztk2;ktc1 z fd*y0m7n f the force on the 3.00-mC charge?

  A point charge of +Q8ow be+sdd g5r;qg3,q s-x1 x(iw w1nm is 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 on the positq;(rds o eb w,1 gnix-md581swwq3 g+xive 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 is at (0, 0.10 m); Q3 = 5.0 nC is/sid knmwx8k;)3prj ln( j +n; at (0, 0). What is the magnitude ofi3/m;lpwrn(kj+ dsnjn xk )8 ; 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, 0.10 m); Q3 = 5.0 necdux w(.0 sv-C is at (0u-e. v s0w(dxc, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC br7 y3n zh2(gn :nq,ziare placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the b3giznn2:qynz( h 7 ,rmagnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 mg q5lwj.f9 q7bm)-igu. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the qiu gwg.5j7-b9qf )mlelectrostatic force acting on it would be zero?

  A +3.0-C charge is at the d6.bx bynm9u p9w t/y:origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so tpm 6yy/b utxwn :99bd.he net force on it is zero?

  Charge +2q is placed at the origin and charge 1xa4ac,a dsf.-q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zcasa1ad,x .f 4ero?

  A copper penny has a masy zjo;8pz*)b ds 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 force of gravity by the attract7ge gk9 +f, knpx1+vcdion of a fixed proton some distance above it. How far above the electron is k+c719gpg efv+xd,nkthe proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducti kk 4fd vtweyj3.e /*k,grp1c:ng threads which are 30 cm long. Both are given identical charge:3/k yj ,fd*ewk.pt ck gv4e1rs, 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 the w rr+6lv*b k0xzo8(sfmagnitude of the electric field at a distance of 1.0 m from the nuclrwvlf (r*68koz xsb+ 0eus?

  What are the magnitude and direction of the electric field at a distanceg c ja 5d +yp0al(1pg,0yl7imh of 1.50 ml5 ,01 py gijhdlga07(y mpca+ from a 50.0-nC charge?

  A 5.0-C charge is 10y*oaq7 y 05j8y+ghpr ,+ trxzh m from a small test charge. What is the magnitude of the electric f+8g,py5yxzay*t rr 0 h+7qjhoield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directio08k :;.vf2nh yp:xu.cb m cfyqn of the electric fiyk;uqb0:y v 2 cf:n.fxc.8hpmeld?

  A 5.0-C charge is 10 m from a small test charge. What is the magniufwzyc jto:1ztrmz3 ,r*,p 2*tude of the force experienced by a 1.0 nC charzp wz 2zt* f,rrum1ctj3*,:oyge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a do(dadlbb45ek+7 ixw ,istance of bd ao54le+(bik,7d wx 4.0 m. What is the electric field at 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 -0wsk v wd8 3-s8/hk,ir e*sple4.0 mC charge is placed at the 50 cm ms-kk*e v3w8l/p0dsw8 r i,hseark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placn+2nfm mu g1j4ed at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At whan4mnfjm g+12u t 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 pjn j di(.paqa++j.jaq43 3l zblaced at x = 0 and x = 0.20 m. What is the m.pj4(jljq3z+j ad. bnq+ia 3aagnitude of the electric field at the point midway between them?

  Three 3.0 mC charges area1m. k.oxl)g q at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC chaml ) qx..1kogarge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the co4socnvq - 76 ;*qvmojqrners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1,n6j*q-vo74 cqq vo;s m 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,lne6nm.uqe1 zf an58rge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of th6zn ,u.8f15elaqem n nis electric field?

  A particle with a charge of 4.0 mC has a mass :ojs*bd+(c4 vnsxf znz0u w26 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 e+:x 4qfj*2 azdpe o5u 6q*9mtevxwex8 lectric field of 6000 N/C pointing downward. m:2f qz exqvj*oed5ex*+uw4x86 t9p a What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The*6mhzzbu36tv: b a b9j ball is placed inside a uniform electric field,jhz9:66*bzvat mbb u3 and is 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 +zp3(6-bqk azm,v.og bv-(hj c 2.0 mC. What is the magnitude of the-jvb(b q 6v -(azohzc. mg3pk, electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mCbslpp 4z-(oag it3.5af2hv ,n. What is the electric field 6.0 cm from the center of the sph.(f 342ppzo,a bal-ntvh g si5ere?