State the law of conservation of electr wei:m :4fsprs1 n0)z flp8t6fic charge.

  Is it possible for two negative charges to attrp)p 4sq. hujafo*-: p4d ab7wract each other?

  Is it possible for a positive and a negative charge to a kmpd)p6uky:hqi5o 8 )ttract each other?

  A glass rod is rubbed wi;42nrp* m-mr gk2ou oxth a piece of silk. During the process the glass rod acquires a positivxr; m kun-2 r2omp4go*e charge and the silk

  A proton carries a

  The model of the atom shows cs,n1sy6cj,v a

  A neutral atom always o8vz+wf6lbsqw/l. u45 m cii ,has

  An atom has more electrons than protons. The s)gq zb wti+0 8iq46veatom is

  Materials in which the electrons are bound very tightly :.j:1 hb4 kifxct uu9,4fu bbtto the nuclei are referred bkjtfh ft::1x4.uu4cu, bi9b to as

  Materials in which the electrons are bound very loosed0les( j;7eb c 2ir,n,- vpbfnly to the nuclei and can move about freely withinevbs(jn pr0,fc-ei,n db7l 2; the material are referred to as

  A negatively charged rod is be wlp16s.td3erought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged3t6 p.e w1esld rod will be charged

  Sphere A carries a net positive charge, and sphxdfj-2y wli12ere 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 statf2x- yd1iw 2ljement is correct?

  How can a negatively charged rod charci(,p qkqc1 +ha 03mmcge an electroscope positively?

  An originally neutraur)ym0q6q3 ql8*qjxo l electroscope is briefly touched with a positively charged glass rod. The electrosco6xm8ljqqq y rq3o0)u* pe

  An originally neutragd gcocj1x22h pt*( /bd+(d(v xgmt7sl electroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electroscopd7t vghp/ x(g dgjt( (+b221o sdcxm*ce

  A positive object touches a neutral electroscriid v*1jp40q ope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the lea*jdq40i1 priv ves?

  A large negatively charged obj-;y pifmw7mu0bt( * v0pg ny.kect is placed 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 0pyfmyw-;bi g7upmnvt( .*k 0either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb con1a ynsy-3ivp;qvjd uei+ 9q+b+ lo,+p stant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thk v;3 )blo;iyqe first charge is larger in magnitude than the s)k ;iyb;vl3o qecond charge.

  Sphere A carries a net charge and sphere B is neutr/ cf 2qv x*e h3wiri/vgp.s48aal. They are placed near each other on an insulated table. Which statement best describes the electriv w2qrah8c4 / /xevgsfi. *p3ostatic force between them?

  Two charged objects attract each other witho osli;/) (sfp a certain force. If the charges on both objects are doubled with no change in separation, ths opl/i;s( f)oe force between them

  Two charges are separated by a distance d and exert uw(3*d), p p)umwv nf-v4vgdzmutual attractive forces of F on each other. If the charges are separated bv *vw()v)d-3d4 z,pw pfguunmy a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the f7m2uvf l()fzo4+fa lm orce between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is red ufa7l lomf4zvm(+2 f)uced to one-fourth its original value? The force is now equal to

  An electron and a proton are separan aql d0en/9z)ted by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the fdz/)n0na e9l qirst electron?

  An electron and a proton are sepab3 n vke:q::3 e:qfb(tvt*h ;lqusp(crated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a sb3hf;qq*:eu:3(s :vlcbeq:pt n(v t k econd electron is placed next to the proton?

  An electron and a proton are separaten x,jl) zrcmj:k8. :umd by a distance of 1.0 m. What happens to the size of the fon8z): xj, uljc.m mkr:rce 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 gga7vy 3f)(bz o9qg+tsecond 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 cen(vbgz 9t o+)aqf7gg y3ter. 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 equilate,qsfc pg1 jik8b4de 4d(1m)pfral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an el (kpdbfme)d41c,i 8qpf14 sgj ectrostatic 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 noxc qq90z*;ta et a vector?

  At twice the distance from a point charq uk.xa09jbs(ge, the strength of the electric field

  Is it possible to have a zero nfb8pyd (dcp:+w4fn2 r:3zl oelectric field value between a negative and positive charg2yocnzbf nl3+:p 4 :wpdr8df( e along the line joining the two charges?

  Is it possible to have a zero electr.bwrz01 rt1 vheba 8d8h5bvv0 ic field value between two positive charges ahvz81vt0 0bd1wr.arebb vh8 5long the line joining the two charges?

  Electric field lines near psitive point crlt,33hpf isbz z+.a 7harges

  The electric field showh6u1w0 n/ vvns*0ofz erazm( 2n

  Can electric field lines0kfu cd: ,rd-x intersect in free space?

  A solid block of metal in electrostatic4 b8ejbhs,r45 id ciq; equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's ;qc 4hs,i5e ibd4rjb8 interior.

  If a solid metal sphere and a h 6s+vpmle;xlc+d -z8tollow metal sphere of equal diameters are each given the same charge,v;tl cps-x8 emd6zl ++ the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in y df4i.ue5su qm5dd(b)lf e85 a region where a uniform electric field is directed straigube.dqf (ifs8medu5l)4y 5d5ht upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric wnu2d3kta /if93p.l wcharge

  A positive point charge is enclosed in a hollow metallic sphere that is groundedp4a 2cj (bchqa i+),gs. As compared to )h+jg4( qcispc b,a2 athe case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static eq ,zu*9 rlwtko:woey2g )*uv 0ruilibrium.

State Gauss's law.

  The charge carried by one electron is79jv ila28ydq $e = -1.6 \times 10^{-19} \; C$. 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 m8j5e8na (zf-i sdky 1gore protons than electronik ja5-8sfy8n 1gd z(es does this piece of plastic have?

  What is the charge onm*prhi lo,4n, 1 kg of protons?

  An atomic nucleus has aiu r;cfall mz9fx8+ 38 charge 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 2.0 and -4.0 mC, r4ux ggg c.q69jespectively. What is the magnitude of the e6x9.c g4j gugqlectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the ftjm(0x 7 (fs4yo dwtz+orce between them is 1.0 N. What is the magnitude ow4 (7dmtzt0jso x +f(yf the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart 3x)zcdx+ne4r are they?

  The force between a q)z kps.4i +.*x/ bvantq,awp$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initial: pgci8w qz -w+zwy3s3 ob,hh6ly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, yw:hwo zscp-8z3+,g i6 qbhw 3what is the electric force between them?

  Three identical point charges of 2.0md/1r8udlt 8 5we/dz u mC are placed on 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 oz /e5/uddd u8twrml1 8n the charge at the origin?

  Three point charges are placed on the x-axis. A ch;yl4avu y bc1*arge 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 magnituv*1 b yayu;4clde and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following posivgl, hx an6we *t3iqm e,w 4o*yu05c3,toxa6ctions: 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 of m*x35wc4 *36 cu oyt,iwnaoqvg0 ,he6tlx,a ethe force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a sb. kou8yc2la:mdouo: l*r3d1 econd point charge of -Q is placed at the upper-left corner. It is observed that an elect.do:mu2*:8ou y1odbl lck 3arrostatic 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 (0, 0.10 m); Q3 = 5.0 nC is fxzvxy1 c26yo5a2gw2r3i) it at (0, 0). What is the mag rf z6)i 3cx212tyyov5aw 2xignitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = uhzrj9:j0ivu 6he 2jnsi28/ d -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wh vehs/9udj6i:uir8jz nh 202jat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of yrdc eg 59oowp0+az6 t:2bz.l an equilateral triangle whice.dybaz 9 zl65:tp0wg o +2rcoh measures 30 cm 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 by 3.0 m. Atugh* bfitf :r8+ fvv8. what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic fou88h:ft r vfi+v bfg*.rce acting 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 ,.5k-te+2zgmkkw qhx m. Where on the x-axis can a thi g+etkm.2 5xk-kz,wqhrd charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at xnz b8s49eynuiapaaw-j:9u:/d;w tdu (k,xg- = 2a. Where can a third positive charge +q be placed so t8dj (x:aaa9 wk-n-9nt4 e sybduu,u p;i/zg:what the force on it is zero?

  A copper penny has a ma v82 5jvtezmrues4a 66ubw.g(ss 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 ofj*/*1vld.zbfc7 k1ka ww:is z gravity by the attraction of a fixed proton so*b1/i7z:1 kww. zjav *flcd ksme distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung fropyx:pm rfgv 4l/r 4+oth.;xk )m a common point by nonconducting threads which are 30 cm long. Both are gi;.f/ 4yr tpmlp4x hk+v:o)rxgven 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 has a charge of +40e. What is the magnitude of the electric fpkooi-ton 4n iy 6mf .625;gwuield at a distance of 1.o ;i fy6 uo4pwtgom5k i6n-n.20 m from the nucleus?

  What are the magnitude hc8;) pvo(twto /.wzjand direction of the electric field at a distance of 1.50 m from a 50.0-nC h8t.ozj)p;wcovtw /( charge?

  A 5.0-C charge is 10 m from a smally84: j:hsn 70us h t5w0afazz0mkpo:h test charge. What is the magnitude of the electric spkh7ou 5majhh 8fy0s::0anwt0 zz4 :field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directio yl,1tina fy:5f1i3j:sq y rp8n of the electric fieldn1jlsqy1 p:i i5f8ar3: fyy ,t?

  A 5.0-C charge is 10 m from a small test charge. What la1 )xj4ich .eis the magnitude of the force experienced by a 1.0 nC ch xh4a1 le.c)ijarge placed at the location of the test charge?

  Two point charges each havy+ qy+i usy(4ye a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field qiyyy (+ 4y+suat 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 mC ch02lla fi 8iwl;y 0hf5harge is placed at the 50 cm0 i2h0 l a5;w8flfiyhl mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placew)4-qjqr n0i:q eq5wt 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 jq w0n):q5- j qrtewq4ioining the two charges is the electric field zero?

  Two point charges of +3.0 mC;iu 1,w -;ikd0 fnuonv6cdah-0rsy /a and -7.0 mC are placed at x = 0 and x = 0.20 m. Whao dw,nhvf0 yac;k/1 n s0uui-a; rid-6t is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Tas i16z1v:nmet 1 k hnc3wx98ghe last cornsn z813h:i1m 6va t9e1nxg wcker is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charg5 ,w rnr4 thgg +.j.mdjrbkd83es are placed 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 square's center?gt3r ddjjbrnk4grwh. . ,m85+

  A force of 10 N acts on a charge of 5.0 mC gb vq5p)xt0 ,usy4dm ,when it is placed in a uniform electric v0bpy ud)4,5ms,xg qt field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass nf9 tv2bvafj a0n z ++ hi0439p6jycrkof $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is py.f7w9a0 h-l, iij/i(av baos laced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball f-f7ly0 a.iv9, sowa aih ib(/jor it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. *z3u./9wvam pbk dre/eun u2e;cq 7c;The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction wa/;md ;n. 7*pzru2/kuqv u3be9eecc of the electric field?

  A metal sphere of radius 10 cm ca,i/tpd-pu; mnu s(v:nrries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's pu:/v( ; pn,-dumns itsurface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the sbgm 42 a53d alh5m0bgelectric fih gb2b0a 535mglsd4 maeld 6.0 cm from the center of the sphere?