State the law of conservation of electricxn5)at.7vx se charge.

  Is it possible for two negative charge4yhvbq3p,g ms:*t x1 qs to attract each other?

  Is it possible for a positive and a negative charge to attra*;g26,hyogg2 ch3lh f6ddc/ sdg) clxct each other?

  A glass rod is rubbed with a piece oswx 1s)p4-gvtn bzfsn-ad 30nk . --o dr0js2hf silk. During the process the glass rod acquires a positip2-s1drk0s g)d-3ov t-wnxnfn0 .zhjs 4-absve charge and the silk

  A proton carries a

  The model of the atom shows6 gm-rb*t;j qh ;m)hj g2al0qh a

  A neutral atom alway9 mk (6dt01vpwmd mva)s has

  An atom has more electrons than protons(8g f t25tv4p-ko bedo. The atom is

  Materials in which the electrons are bound very tightly to th-s :kri lbv f+*au*(hjv;, lcbe nuclei are referred to a*l+usr-k c:j b;*, ihavv(bfls

  Materials in which the electronshr89t uad/xd9 are bound very loosely to the nuclei and can move about freely within the material t9 8d9/hadxruare referred to as

  A negatively charged rod is brought nbe,z-k6n8wnl yp, x alus/).mear one end of an uncharged metal bar. The end of the metal bar farthest f8ylu n/an,e-ps6kx .,wm)bl zrom the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral.crq-(51w ifbbuq 14p z They are placed near each other on an wqi r 1-u(z4bp51 fqcbinsulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elect7g/rsbf 9hnrmt b5 i-:roscope positively?

  An originally neutral electroscope is briefly touched with a positively coe7+(mcb v8icharged glass rod. The electroscopi+ e7bmccv8(oe

  An originally neutral electroscope is grounded briefly while a posiwacx;-ypm7z6ik y -5v tively charged glass rod is held near it. After the glass rod isw x;c5-6a -vy k7mzpiy removed, the electroscope

  A positive object touches a neutral electroscope, and the l+-9gk q r3pjyalt- :gpjcu15feaves separate. Then a negative object is brought near thefg ug95ja+k3:jc- qpl tpry-1 electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on a bb q*zev3 *hme0d8w9bn 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 fe0e*9 *bd zvb 38bhmwqorward, 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 Coulq,p0n*nl: a)ew ixe e; gx2m;jomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. 96ijhw ick5k;The first charge is larger in magnit6 wiih5kj;kc 9ude than the second charge.

  Sphere A carries a net;v.vtn: nt2e3v.a ud j charge and sphere B is neutral. They are placed near each other on an insulated table. Which sta:2uvn .dv ; tn3tjv.eatement best describes the electrostatic force between them?

  Two charged objects attract i/8l fbnnak h(z7dic )zan6(; each other with a certain force. If the charges on both objects arn an (l(iazfb;iz7kh)8c6 /nd e doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutsra4dsdz.rq+9 ;4s)kli ds t+ual attractive forces of F on each other. If the charges are separated by ats +;lk +ad di z)94r4.sdsrqs distance of d/3, what are the new mutual forces?

  Two charged objects attract eap),f)fqx2(*pbi13 k kjdlek0i rwo5pch other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the se*32 ko e0)1(ikf5ijfp)pwxp qr,lkdbparation 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 of15la*z w1nqw f 1.0 m. What happens to the magnitude of the force on the pro15az* q1wnlwf ton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens g.z6jbx9q gm fl 8::7 ceeswl0to the magnitude of the force on the first electron if a second electronzbge0 cfl :m6wq98x sl .je7:g is placed next to the proton?

  An electron and a proton are separated by a distance of c9r4ty /ifg:2ii( xkk1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the prok g(2yt4iif:9x/rk citon?

  A point charge of +Q is placed at the center of a square. W +d,x)p8s jjsjhen 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 is the magnitude of the net electrostatic force acting on the positive charge at the cent+ss xj,pj8 j)der of the square?

  A point charge of +Q is placed at the centroid of an equilateral trianod5w-z:6( xi j.g 1g8ydhda kogle. 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 of the force that acts on the center charge due to a third c1 56- ogdw o(k8dg.a:hjzxdyiharge of +Q placed at one of the other vertices?

  Which of the following isbh r hbh.;s6j( not a vector?

  At twice the distance from a point charge, the strength of tyb lt *s-u9 knxjl3y5;he electric field

  Is it possible to have a zero electric field value8m qlim17*xcx between a negative and positive charge along the line joining the two lxc7i1m q8* mxcharges?

  Is it possible to have a zero ele kmciogl7g,(+ xrh8fu6 g 4q)tctric field value between two positive charges along the line joining thxotki+cg( fg7rg4l)8u q m h6,e two charges?

  Electric field lines near psivjvx8:,-yy6 aj+x+h( wd tubqtive point charges

  The electric field sa7 6py- in94c-wv yhlxhown

  Can electric field lines intersem)56uqpz rci5ct in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniaivl yxi8f42 .form electric field. Give a statement concerningi8 yv4 xi2a.fl the electric field in the block's interior.

  If a solid metal sphere and a hy -* ra 5x.z+:y i+nbiz,fiizmollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and ti+,+zn-zmi5:yfr.x yz*ii b ahe surface is

  A cubic block of aluminum rests on a wooden table in a region where a0x;3der 03d j8oo1g kk0zk gp(lc1jvl uniform electric field is directed straight upward. What can be said concerning the charge on the block's top suogk 0(0evgkljr1xdj33 80ck ;d1zl oprface?

  If a conductor is in electrostatic equilibr9vr/arlbd9 6 opd9.wz ium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groua. w4)c+nvppadk51rsj qk8js 4(zrb;6o0bulnded. As compared to the case without the hollow sphere, the electric field at a poink6qun;kjzc(1sdb44roja a.w 5)8slb0+ vrppt directly above the hollow sphere has

State three propertiesaz:, yjqf vdv ev:,h :/k)0hms of conductors in static equilibrium.

State Gauss's law.

  The charge carried byihhho j23m12 y9jtu6d one 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 more prothesbeinb(,jap2c14i0xt1 78pa . z v sko7nu ,ons than elec nsxe2 7apcu7.v80e(14in pb ojask,i1 h b,tztrons does this piece of plastic have?

  What is the charge on 4j1sz;yuvan v9u 45 ug1 kg of protons?

  An atomic nucleus has a cha3t*f9+xtd o)muws ;jnrge 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 of 2.0rv 39ir9qtv i: and -4.0 mC, respectively. What is the magnitude of the electric force betr9tv v9i:riq3ween them?

  A 1.0-C charge is 15 m from a second charge, and the force between them p-c2p 9o bsrw7is 1.0 N. Whatsp9bo-7cr p w2 is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.+d fnzza*o41z0 N. How far apart are they?

  The force between a f:zi* g6gu/it0 y 1lo-t cx s;lfc;pw/$30 \; mC$ 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. If ym :h5ah(ojcw(h/q :h-dd (nxthey are moved to a new separation of 8.0 cm, what is the electrdywn-:mqhx5( dhh(h c: (j ao/ic force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firs zvu,6kp 0m9rst 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 06pkrmsv 9,u zthe electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 .lymq9 p,jb/u: hif -umC 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 origiy m,pl-/fuh.uibj9 q: n?

  Three point charges ru,p;,1faoe(-* ui kav+kmm ware located at the following 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;p+(*a , k ukr,f1-amweim vou magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square,jfw779+wr ,cixg)( el o1ipg s and a second point charge of -Q is placed at the upper-left corosx (glp f)ei71cgji +,w97rw ner. 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at 1xr8/ouw 5v(d 2mxq xv(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net forcexxo1um (w/ vx85rvq 2d on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.3022jr .fv4ue)8d /xuoasv1m z z m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net forcm)28x2r/ ajufvo.1vd4 e uzzse on the 5.0 nC charge?

  Three identical chargc9l m h*rh 3 8(jn0:txzisthd8es of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force whic38rsl8tn(imz:t h*hjh 0 9d xch acts on any one of the charges?

  Consider point charges of +Q and +4Q, which areqd xq6(-rc5j y 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 on it wo r q6cy5(qxj-duld be zero?

  A +3.0-C charge is at the origin and a +9.0-C cha,uw9hyk4lb c apt/5a /rge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zero5 a uap/cyth49kwb l/,?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wheroirk qw-f0 rbq*f1/u(e can a thowkqfr i(-1b 0frq* /uird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totuwgoq 7 wd:-.lal 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 k ar68wix 6w. 43tjypmbvv(, dof gravity by the attraction of a fixed proton some distance above it. How far above the electrjbix.4 akwdv 6 v863,rymtw(pon is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting t1v wgt 9.x40w1 qkook0pbap b(hreads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle xv0pwk0 (9b ob1got1p4.qa kw between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a5 s )k(qqi)okw/x5ynb charge of +40e. What is the magnitude of the electric field at a distance ofny) ibk5kq x5o /q)(ws 1.0 m from the nucleus?

  What are the magnitude e3lms 3s5()xn ef gjp9and direction of the electric field at a distance of 1.50 m from a 50.0-nCmp59 3jsgxlne e(f3 )s charge?

  A 5.0-C charge is 10 m from a small test charge. What is the ma1miaz reg0 z7m3glps34cuh 61k;-egh gnitude of the electric field at the location of the test charge?m ; kp1zhazm30u7sgh3-g4 er6ecl1gi

  A 5.0-C charge is 10 m from a small test charge. What is the direction51fxra0u4kst qt, i+ o of the electric fiel fut+4rs01 5aiotkx q,d?

  A 5.0-C charge is 10 m from a sy hu07,hg 3rqw.f anq. x-ok:wi5vag:mall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of ty n owg. .hug q,0vqhi f:xa7k-wa:3r5he test charge?

  Two point charges each have a value of 3.0 C and a .ra5c pyrs zi 1)+h572cnfrcwre separated by a distance of 4.0 m. What is the electric field at a s 2prwi551)c7.r nacyhz+rcfpoint midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stickzjbs.g53g tld- k60 lg and a -4.0 mC charge is placed at the 50 cm d63-k lbs5gt lzjg0g. mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed ajrlbi) x 7*b3myw8*d at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joiniyid*bal)8*7 mrwx3 jbng the two charges is the electric field zero?

  Two point charges of +3t /d sexlm8zr0h r(;xmm.0xj. .0 mC and -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 m.l.mt0rj;rx(80hxxe/ds z m them?

  Three 3.0 mC charges are at the three corners of a square h4 52umxji3blz: xov6 of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field 6 j4x3v: hiuo25zblxmat the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placej.3a5 n:l qfbed at the corners of the 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.jql a:f53n eb square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform elecr+k0 bax4,qh6lb+u1t rv xz7g0 d-btxtric field. l tqr b0-6xr,b1ub0xa+zxvgdk+h4t 7What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC hasnh3e1w6o 66o3rca n cgo5m*vi 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 po x.n,6lb:chw( y v;k-/* d xsn a8jglcmfek2b4inting downward. What charge must be placed on the ball for it *lb ky(nb68 ajcs,/.dx:vk2-m4hl gxnfec ;wto be suspended?

  A foam ball of mass 0.150 g ca n(vv3qv)g 0l qh4o7lyrries a charge of -2.00 nC. The ball is placed inside a ulo(q7gq0h)vyv3lv 4 nniform electric field, 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 +2.0 mC. What is the mav7+7r dx)e+ whzslnrzm5rw47zqkr4/gnitude of the 7v5rm) /hew7z s k4 +zrnrwqdl+7xzr4electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carp,rsoxe/a7 z1ep6s5i ries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sp zea,e1x5 i7ssp6ro /phere?