State the law of conservation of electricw1 0 9us 9jcw9bydgd7f charge.

  Is it possible for two negative charges to attract each ;wgm qy (rg y 7c hzwqn:d8zf*.(78 j1arz1btfother?

  Is it possible for a positive and a negm;osn+iunnzq ;9 t1q 0vrd/p*ative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass ro/:dq- ojb.cx sd acquires a posid :.b/ -jsqcxotive charge and the silk

  A proton carries a

  The model of the atom show 2jp1j/ :iyk4nxqive9 s a

  A neutral atom always9xfds 36 +s nvu.caf1k has

  An atom has more elec,sttn m n5b-)ctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to thwj1mbb;6bjo .z x,2pse nuclei are referred to asb1 ozjb,mj ; .26xbspw

  Materials in which the electrons arb +iy ehf(+p4gwthw7 c8c x/,kcd(*c se bound very loosely to the nuclei and can move about freely within the material are 7twch(+hp e/xks c+c fyc *dgwb48,( ireferred to as

  A negatively charged rod is brought near one end of an uncharged c vi1o3etgz:6+zyeac: m 50zjmetal bar. The end of the metal bar farthest from the c0 e1:i z6mcg+zj ty eca:3vo5zharged rod will be charged

  Sphere A carries a net posct1zm3 qy,ic5 8,vckpk kg91 oitive charge, and sphere B is neutral. They are placed near each othe,gk5 t qcp 1coymic39v z,1k8kr on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod cg 8m) :iem- u3zw;s an:ibhh1q w6j.ggharge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positu8,wmz77+l3) if jozk* nc syaively charged glass rod. The electrosyl*k i73 nomc7w u8,)+fzasj zcope

  An originally neutral electroscope is gmrx e1*07vsip rounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, tr0e1 xsmvp*7i he electroscope

  A positive object touches a neutral electroscopso+; 5jdyn1 fwe, and the leaves separate. Then a negative object is brought near the ejnfsy5;+o 1 wdlectroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tabla egydfrd oa22eo2- 91e. 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 dyo2 ee a 9arg-o22f1dnot 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 Coulmut yd.o4cbb uc )n*/-omb constant $k$, which appears in Coulomb's law?

  Two charged objects are sepab-(j1bfcmf mb bd n30 3c43 tiqp-9jejrated by a distance d. The first charge is larger in maeid( j0jtb4nmj1bpqb f -cm933b-c3 fgnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They1k*m gzcyz :s //mvsms8ipw84 are placed near each other on an insulated table. Which stz//m 4 w1*mmsg8sz spvkyc8 i:atement best describes the electrostatic force between them?

  Two charged objects attract each other with j,uo5+g s+zex4uv8u 2f8wanj u j:pg3a certain force. If the charges on both objects are doubled with no change in separation, the foau8un3f +, 24gjgsxeo:w5u ujv pj8z+rce between them

  Two charges are separated by a dik 7j :rw*hbioj(o4+6 zspsah2stance d and exert mutual attractive forces of F on each other. If the charges(*is 7ap zj+jh2k6ob rsw4oh: 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 happ: zr(vjd wt3g0ens to the force between them if one charge is doubled, the other charge is tripled, and the separation distancej w(t:gdr 30vz 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 of 1.0 m. What happensl03mj2rrieua6a-z/m to the magnitude of the force on m-/ 0emaaulz26jrir3the proton if a second electron is placed next to the first electron?

  An electron and a proton are -gdupwqinlt6 n5 1;li+c6+taseparated by a distance of 1.0 m. What happens to the magnitude of the force on the first l6+nai1 qt-5pnc gu ;dt6wl+ielectron if a second electron is placed next to the proton?

  An electron and a proton are sepa ,hudl7f1fk3krated by a distance of 1.0 m. What happens to the size of the f3dfk h7flu1k,orce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the c eb-k+n/huay5 8zxx q6rf-vp1enter of a square. When a second point charg 1ax unq-5+p86rv exhb-k/fz ye 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 center of the square?

  A point charge of +Q is placed at the)n+d )h ndo7gh centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic forceh)7odnh n)d +g 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 vector? 5lum5:gf-g /vmwg5uu

  At twice the distance from a point charge, the strength ofo*jj/ 7mj xz5v the electric field

  Is it possible to have a zero electric field value between a negative andv9 25m;fg,cgm b(r npx positive charge along x,cgg92;p 5mv(rbmfnthe line joining the two charges?

  Is it possible to have a zero eldv1rplb 27u;mectric field value between two positive charges alop r2vub1;ld7m ng the line joining the two charges?

  Electric field lines nearv vylv+ tu.j+h1v6 kjczc j,7/ psitive point charges

  The electric field shom5n2(6 w+ovy nx v( :2magosjiwn

  Can electric field lines intersect in free space?s-v l g(uyrfymk:s)..

  A solid block of metal in electrostatic equilibriumgl9jkjj -l323 f w5g(* cubjrm is placed in a uniform electric field. Give a statement concerning thl*w(mj k9 b lg3-j3ujgfr2cj 5e electric field in the block's interior.

  If a solid metal sphere and a hcsy/ h8oxe7itgg 79v rq h),)oollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface is gohey8gv9)7x)c/7or shq t,i

  A cubic block of aluminum rests on a wooden table in a region wab-r3omsh3pvhey +2:here a uniform electric field is directed straight upward. What can be said concerning the charge on the blocks+-3bh:haor2mv e y 3p's top surface?

  If a conductor is in electrostatic equi3bx(b /)i7to/qi np ralibrium near an electric charge

  A positive point charge is enclosed i62v0wzol: ubv7ou k 9rn a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, th2: 09blzvo7 u6wku rvoe electric field at a point directly above the hollow sphere has

State three properties of 9 bigmrwyt-45conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is kr8/eng)k,h200j 3 soso1vt1 yh1 k njscrbj*$e = -1.6 \times 10^{-19} \; C$. 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 elhl5tp;k8/iq+wf clr. ectrons does this piece of placl5.;hr/ifkpw+8 tqlstic have?

  What is the charge on 1 kg of prot 6swf1u- lee,eons?

  An atomic nucleus has a charge of c*pn /d qzs.nqg6sb/n)n*:oa $+40e$. 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 - (jnm1fn7v17k b9. f2uahhtyze se9ro.-zf 5 v4.0 mC, respectively. What is the magnitude of the electri j7n9oe (. us1fmaf1h vv75-yr2z9bn htke zf.c force between them?

  A 1.0-C charge is 15 m from a -1d*b m/fabaa second charge, and the force between them is 1.0 N. What f/ 1a-baabmd* is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Ho:5aki,*(xb-q-yujva gdp c7nw far apart are they?

  The force between a wildbhj hi :gd+8/hg hn.me, ki) (v51$30 \; mC$ 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 o:8uzm p vlz,,h i0rr/;7q2g a ;xxsnuthey are moved to a new separatihol0x s r;rna: q,2v ux 7u;igmz/,pz8on of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cxu(pnl o4) pf0harge is at the origin, the second to the right at x = 50 cm, and the third is apn4o) 0p(xuflt 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.op258 pr /*l7q5jabysar, d ez 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 and direction of the lysq5p or5drpejbz/7 2a8a* , electrostatic force which acts on the charge at the origin?

  Three point charges are located at the folx/. g56x,wu akg) ppgylowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3y/ .ugx5 p6gkgx,aw)p.00 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 +b2ml(8 ldaee su-ui, -/-yzt4mjlxe 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 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 lowers(8 4 iell-j umudyabxe+- e,t/l-zm2-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC imcs 0daw )i7zeu;o-l2 s at (0, 0.10 m); Q3 = 5.0 nC is at (0 icm0 );s-wozu27de al, 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 9gr)vjx) cs( tnC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whax9vjsc)rg(t )t is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC zs drqr (1hqbey,76r;are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any onrsry bze;,(d67r1q qh e of the charges?

  Consider point charges of +Q and +4Q, which are separated by e;n/n8;ompkyr zzv 75 3.0 m. At what point, on a line between the two charges, would it be possible ty 7km;5;/rezp n8ozn vo place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the orig* n ;ujwj(wy(dzvyr,( in and a +9.0-C charge is at x = 4.0 m. Where on the x-axis c((z(d* j, ww vyrju;ynan a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whffj)z40 2ykbw,5y bhkf)w-r k ere can a third positive charge +q be placed so that the force on it is zero?yf2,ryf4wjzk kb-h5fw ) k 0)b

  A copper penny has a mass of 3.0 g. A total 6ihr3f lq*8d3w bcjw7 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 attraction ofc *3 lya 4ohc2ugiy0v1ef9) ey a fixed proton some distance above it oi32 f cc*h)y eua0e9y4lyv1g. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from j4(v:r-qetyx6i awq 4 a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic 4eqwryj qat( 4-ix:6 vrepulsion 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 tjxs+ pzh9ga55w;p lt04tga-rhe magnitude of the electric field at a distance of 1.0 m frorxt5alpgz9;4 g0 +t-p ahw j5sm the nucleus?

  What are the magnitude and direction of the electric fiela l/9d 9*hqgk:po 0obfelsq 9:d at a distance of 1.50 m from a 50.0-nC :*ef l:9klq qa9 b9h posd/g0ocharge?

  A 5.0-C charge is 10 m from a smal:87- ena;am y-dhkhiul test charge. What is the magnitude of the electr8d7hhnm-au k aie- y:;ic field at the location of the test charge?

  A 5.0-C charge is 10 m from a smala /12vs*iodsk t1yzq 8l test charge. What is the direction of the electr ks8a11d *yisqzt2 o/vic field?

  A 5.0-C charge is 10 m from 1wp(5s xy jcua2y(s7r a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placeds y cpys7w5(1xrj 2ua( at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separatedx1og 47 e:g-cec na3og by a distance of 4.0 m. What is the elect 1xcgng3 4g:o-aeoc7eric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a m +8kpww8i x8mg w+,hzketer stick and a -4.0 mC charge is i8w8hw+z + pxm8wg k,kplaced at the 50 cm mark. What 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 mCnzl q68qte* 3y charge is placed at the 50 cm mark. At what point ony lq3ezq6 nt8* a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. r sdz9np/ewo -msn9-2 What is the magnitude of the electric field at the point midway between themsm- /rdo9snn 9 -w2pze?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The kjz bffb uf8,;4t :(rzlast corbf4b (;t f ,zfr8u:jkzner 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. Charge:) op3h qsckb- h+yl(ys 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 th ypksb)h:oh l y-(qc3+e square's center?

  A force of 10 N acts on a charge of 5.0ve : vg )td(0pev1+ckq mC when it is placed in a uniform electric field. What is 0t)dv vekq ( v:cg1+pethe magnitude of this electric field?

  A particle with a charge of 4.0 mC has a m ds uphf.8m,yjm-p0r 7ass 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 fia9ov,-l3sit +v odb0 jeld of 6000 N/C pointing downward. What charge must be plac -a 3 v,bs+jo9itvld0oed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of f..qm ct/z:dw -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 o:dzw /c.q.tm ff the electric field?

  A metal sphere of radius 10 cm carries a ch16c c;xui6d8/)cf srm 5f-qssgw cm/barge of +2.0 mC. What is the magnitudec d8/i6;u6c15smsbmfxf cwc-/g s)q r of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whahafm r3qvem 9n4(7pepzo8 e( u7np75at is the electric field 6.0 cm frvp8uee m par7z p53n7oq fme4 (79n(haom the center of the sphere?