State the law of conservation of electric chrt: xjrb ivs6x/-+jc+arge.

  Is it possible for two negative charges tok ir4 ykeh;+i;5xw)jl attract each other?

  Is it possible for a positive and a negative charge to attract each othi *gvj1-n-wn ser?

  A glass rod is rubbed with a piece of silxhr9yi.)h7s6 l* ax 9z k8 zet; lp0/9lnhuvbck. During the process the glass rod acquires a positivevchr8x.9z 7;n/xe9 p0ltli9ablsk*h )yhuz6 charge and the silk

  A proton carries a

  The model of the atom sho5qgmr1r*i9w t7dev8 yz a;s2r ws a

  A neutral atom alway3hv6y: 6kll2o jb8iads has

  An atom has more electron71i mci :lw)ui c1sd .w4oo*wns than protons. The atom is

  Materials in which the electrons are bound very tigh ju9hy5m r(d*gn co.sas.(q,jtly to the nuclei are referreqahrc m,sug(y9 s.d(5jn.jo*d to as

  Materials in which the electrons are bound very loosely to the imwb:x0zhc+5 oqv9. pnuclei and can move about freely within+9p.wxi :mzcqvhob0 5 the material are referred to as

  A negatively charged rod is brought near one end of )de 54ll xy3hlr31 rnkan uncharged metal bar. The end of the 5 r4n 1l)l3lk 3ydrhexmetal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral.v9m4s0 kxb /zbse33qv They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is g3q 9bv 0bx4v /mzse3ksrounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope pox qm*mg m.;p.ysitively?

  An originally neutral electroscope is briefly touched with i w(.j)wj n.aya positively charged glass roj j).(w ny.waid. The electroscope

  An originally neutraot;+u +i;xc 9 y+gxbxysw,c7wl electroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electroyo+w,+x; sxt7gic9xb +y ;cuw scope

  A positive object touches a neutral electroscope*mm v6h11tx ab, and the leaves separate. Then a 1hx6tv ba *m1mnegative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tab0*z9jp*fb o pwl/;kj w:dd+ xmle. 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 either ball touch the negative object. What ibd*p+:kzjw;pomfx 0 jwd/9l* s the final charge on each ball?

  Charge is

  What are the units of the Coulomb crxwkb+dl*px i0 w;dv25r md 1b pxy(89onstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fieoty+bb 74p, (so0 amsrst charge is larger in magnitsm47+ops yeb0toba ,(ude than the second charge.

  Sphere A carries a net s, xz7e aaa1hvus1p 89charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best da117ahz v xsep,89s uaescribes the electrostatic force between them?

  Two charged objects attract each other with a certain force. Ip9 (b/rsc p;m 4vms-2ilslqe -f the charges on both objects are doubled with no change in /l4sq -i(rlmvbc 2m;ss 9p-pe separation, the force between them

  Two charges are separated by a distance d and exert mutuaa9c86v)zh mpcj- 9p gdl attractive forces of F on each other. If the charges are separated by a distance of hca)9d6-mppjgcv89 z d/3, what are the new mutual forces?

  Two charged objects attract each other with a 9ayb fnj,1-q:f 1zkxr g)xk8dforce F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourthjfr dkn:x)9q,11zgf by xa-k8 its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens tr(h*qb gus 8kwr( 6,rqo the magnitude of the force on the proton if a second electron is placed next to t k, (rqq bgwu6s(r*h8rhe first electron?

  An electron and a proton are separatevh-l,0tho hlghr/9s 5d by a distance of 1.0 m. What happens to the magnitude of thh5 hthlsh lr09,/vog- e force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 msz(; ncr ho;v(k2) /7quarnac. What happens to the size of the force on the proton if the electrac2(o(r cs rha k/;q)7u;znnvon is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When . 9tkpqt*c. pca 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 s cptq.ct9pk *.quare'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 -nk-ak1: vk/p9kmtvx0e1j7llp 9lkp placed 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 the magnitude of the force that acts on the center charge due to a third charge ok17av9/0pkmjpn :- k xlkvll1p-kt9 ef +Q placed at one of the other vertices?

  Which of the following is not a vectc/ko 0di/anl3or?

  At twice the distance from a point charge, the strengt),u vtk-yctq 96dtt 8qh of the electric field

  Is it possible to have a zero ela* qvzh 5s2yarpm51nfc 2 (q-fectric field value between a negative and positive charge along the l5mf12 f*qc(v za5r y2pshn-aq ine joining the two charges?

  Is it possible to have a zero electric field va3vq* nxfw5 u.5(wgdddlue between two positive charges along the line joining wfd. qx(3d5g*5dvuwnthe two charges?

  Electric field lines near psitive poin9o6i* om,1fln3u yiant charges

  The electric field showc ch, wg2/qp0yt5*cs cn

  Can electric field lines intr6wf 66tso2 cfersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in am o-m-:vwf8hsvs4b x* uniform electric field. Give a statement concerning the electric field in thv s* :wvsxof mbm8-4h-e block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gi+l).+jl x oqplven the same charge, the electric field (E) midway between the center anp +l).lq jl+oxd the surface is

  A cubic block of aluminum rests on a wooden table in a region where a qks 4 cdj)ap:/ vyy;.duniform eleccq4j)y.ay dd spv;: /ktric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostato u;5hb esi/:e:-0mkw s gs /+,qcmthzic equilibrium near an electric charge

  A positive point cha hod+ ns4*3nu8o uxc1nrge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hu1 ocnhs8+*4d uxn on3ollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium.:w1at1c kdinv 5k z2w7

State Gauss's law.

  The charge carried by onel)7 h.(v+i/ j;perl7gatr o+ln q3pg u 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.s9piec*g7ucch 8o wjz ;0m2t more protons than electrons does this piece of plastic have?j*7c z ituhspc2 8c9ge;0.wmo

  What is the charge on 1 kgdh+ /1f1qv jmm of protons?

  An atomic nucleus has a char jigsww6h./co); c-9v4ipyi rge 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 an .v8n 2gq*qywmi zo:2cd -4.0 mC, respectively. What is the magniyqi22zo.n m:8vcwq* gtude of the electric force between them?

  A 1.0-C charge is 15 m fro3s;4 tr6 gmc;uxvvew-m a second charge, and the force between them is 1.0 N. What is the magnitude of the secostcvu3;g m;4vx6e-r wnd charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart3rhu jc j8tr,,-f9ao n are they?

  The force between a y4d2* gml/ lpi$30 \; mC$ 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 forc/1,enoq rb h4rvgnx 3 bja76r+e. If they are moved to a new separation of 8.0 cm, what is the electric forc r7nbo/n,3brva h4 r+1g qje6xe between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Thet(1yjexm v,i a3(: tge 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 fo m(yv:(e itag te,3xj1rce which acts on the charge at the origin?

  Three point charges are placed on the x-axis7gwbt: /4pxwvj51nk p. 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 electrostatic force which acts on the charge awk g/5 tx17wbp4 njpv:t the origin?

  Three point charges are l7x aypd0z.yk )pxkuw48 d;2tsocated 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 magna2p )z;dysk.p xx4wtyk 78 du0itude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center bbji51y j*c j xxs:v/b;x o8 ke64pra0of 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 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 cornerbp*y0 6ax1sj kb;/4 vixbx8eo5rjjc: ?

  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 a 0nywi5kyo b -)kt2d *pzn;ft.t (0, 0). What is tond5ik n y;t-bpz02*w.f k)ty he magnitude 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 (0 34vzgrz8z,,mlr6 ous, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net forc,l,rz6z 4r vmgz38osu e on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at th/v5: b(r +(idu locekffr+r7we vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic fokb5(w+(r7fli+ d r:ecov/f ur rce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separateds9b,k h+si) .ccnj/nq by 3.0 m. At what point, on a line between the s) jk+ csc9ib n/q,.nhtwo charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C chargee c,vzf1.hnw) ho: 2zt is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on i vnoh 2:,zw.1ecfzht )t is zero?

  Charge +2q is placed at the origin and charge -q aw4 i , 3cb/;onsk/8q 2hyscdeis placed at x = 2a. Where can a third pos/ 2;ih /swe 4,bdsqyknocac38itive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total l dijjz(y e;ov)y qh+l7(z35cof $4.0 \times 10^{12} \; electrons$ 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 grav 2ehlme ;3njd4ity by the attraction of a fixed proton some distance above it. How far above the elde;2lm n3 hje4ectron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nzx 93kjf kuvdn,k1a4)onconducting threads which are 30 cm lofu3v ak k4n1)x,kdj9z ng. Both are given 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 magnit8uku 0go ywwkkdmt8/ 28kg4k0ude of the electric field at a distance of 1.0 m from the nucl2kkkk/wu yg80m0ugotw 8k4 d8eus?

  What are the magnitude and direction of the electric fiel4dcb dq0j2( q4p(add9e1b 6e, * aqtjlkbj8zsd at a distance of 1.50 m from a 50.0cka8apj4s d jl*bbb( e1 q0d(e ,2496dqjtqzd-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitu(w,uyx sbh*z9de of the electric field at the location of the test chargw (bs,u9h*zyx e?

  A 5.0-C charge is 10 m from a smallha48bf96rfn 2zcbfb4sra4w 3k zu)yg) a,tt * test charge. What is the direction of the el z utaba t,a9b4kf4rw6c*fzs4b)2y3 hgr)8nfectric field?

  A 5.0-C charge is 10 m from ).d,auqlu-:f j qd9vx a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test c,-alq v.x:qdd j9 ufu)harge?

  Two point charges each havmtxf2.1 pv:yfd eq :)te a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two charges?x py :qfe.2d1f:)ttv m

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.7dv sjni8( q3m0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mark?37qsvjimn(d 8

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick10j6x-c/8 hes(ugpm9;nu7rh tmgz vg and a -4.0 mC charge is placed at the 50 cm r10v6sp txg;g/(h 7mjc-ngmu h8zu9emark. 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 placed at x = 0 and x = 0.2wplli 6ri5 /o+xho/e(; .icto0 m. What isoo p 6ol/ ;chl5/rit.+(ixw ei the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are ire lv802;vgv at the three corners of a square of side 0.50 m. The la82 v;li0gevrv st corner 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. Charges are placed at the cor+c 8vb)piv+m dners 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 magnidvcbm++) v 8iptude of the electric field at the square's center?

  A force of 10 N acts on qzxe+c k1,4rea charge of 5.0 mC when it is placed in a uniform electric field. What is the magncze1k , e+rx4qitude of this electric field?

  A particle with a charge of 4.0 mCo*w 6x)bhj as0 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 electric field of 6mn,3evf e *j.-huj8l4qde 9mu000 N/C pointing downward. What charge must be placed on the ballm jj8nev m3u*e, l9e4hf- dq.u for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placej7x8zvju 6xd d6ar :kto(z 3.ys(*qstd inside a uniform electric field, and is suspended against tvk:td q*sz.6rs8d( ja7z6t 3jxx o u(yhe force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge oey qpznq(6;+0zcew 2e f +2.0 mC. What is the magnitude of the electric fienqe62(wze0yz+p ce;q ld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 8 otf)a . la/r2y9,kcvyze/ym3.0 mC. What is the electriec/ly.y 2v 8ra,fk9z)ma ty/ oc field 6.0 cm from the center of the sphere?