State the law of conservat6grvy7zy ik(ds-e r 57ion of electric charge.

  Is it possible for two negative charges to amy;: 9cl*xedax w h;orujsg .1i3j-g /ttract each other?

  Is it possible for a positive and a negative ch03ndi3- oz/38zj* mzolncss varge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glcr /st-g 5yd bq3)1 /e4fetxqdk :6+ paf:tkcqass rod acquidb/+k4k/ rsa-f6: 5tct3ep)qfeyt:q qgdx 1c res a positive charge and the silk

  A proton carries a

  The model of the atom showstlb9obru rbd /kb2)zwe 9. 8ou4+:y bw a

  A neutral atom always has67ylc mjzcotq3j -f/41jyag,rg5 5gl

  An atom has more electrons than protons. The atom isp n567uaunmr 2

  Materials in which the electrons al5 0+ky(edbl, i i+wvyre bound very tightly to the nuclei are referred to +wlevby+di5y 0, (ikl as

  Materials in which thelb7fxr (;.qja electrons are bound very loosely to the nuclei and can move about freely within the material a.ba(qxrj f7l;re referred to as

  A negatively charged rod is brought near one end of adngeq ;7fuirjtd :q31 .k3v (tn uncharged metal bar. The end of the metal bar farthest 3rdndt3 (.7iut; vek1 qf:gjqfrom the charged rod will be charged

  Sphere A carries a net positive bf m;udif, m*)charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groun;u,)m dmf*fbided. Which statement is correct?

  How can a negatively charu nd:qg)gxfh*cj cq/ a .s450mged rod charge an electroscope positively?

  An originally neutral electroscope is pq.r/7mxjzx*ho ae78 briefly touched with a positively charged eh./po*8qja rmxx77 zglass rod. The electroscope

  An originally neutra0p7 *2 nvmomyfl electroscope is grounded briefly while a positively charged glass rod is v0ym nopf7*m2 held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutralqg08s 2f(d+ avjxlg7eh9a0zy 7g6oy k electroscope, and the leaves separate. Then a negative object is brought near the el6sgx( 9g gd0yv7eq ykaj of08za+ l7h2ectroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulatedksjdl.n4q8q4nzm lj30 r:xv9 table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic43.0k:jjs q dn9qz n4lxrmlv 8 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 Coej; 0mzo3xx w-ulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by abaholrhew7j06(a j2n8 ,vm s*, yf) q3ej8mjo distance d. The first charge is larger in magnitude than the second charg)whs0q me(jj26,7bne8jjya m 3 rfo,a 8vho*le.

  Sphere A carries a net charge and sphere B i18qof onwfuk: ;nz;v/s neutral. They are placed near each other on an insulated table. Which stan 8 o/ u;fokqz:v;1wfntement best describes the electrostatic force between them?

  Two charged objects attract e+*j qdqjvzh -d3:sj 3:*enayuug3s2 6asgam +ach other with a certain force. If the charges on both objects are doubled with no change in sepa2dgujgq- :ayh3 +s3 e*ns6as u3ad+ jvqzj:*mration, the force between them

  Two charges are separated by a distance d and exert mutual a 1flp o4r(wdy7ttractive forces of F ofrw l4(7y pd1on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a wgpfc15 vb70l y1co7*t* hs kpforce 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-fourth its origina5 *fp g7b0hky 7w*l sccpvo11tl value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happen(p nnlxztmd(n5) 3 i4zs to th3mx ldp(nt54)nzn iz (e magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance o 5(q5* 7es ka:tq3bru 0cudceff 1.0 m. What happens to the magnitude of the force on the firsttuc:k*q(d57c 3aqbrfu5 e 0es electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distancedm,cmpquie tlu.+6lxl, +59ac* zr ;k of 1.0 m. What happens to the size of the force on the proton if the eliz pcl9,+6m5+tdqruu k,x*;le lma .cectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of h .2;p:xd.sxv-f nq+eil7pp et9c:( f,sqqb y a square. When a second point charge of -Q is plaqpps2( -:b7l+f:qpc,xtef .nesdqvh y.9xi ;ced 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 centroid of an equilateral trianjd6,b +.zg59 kq +wetnqw5tkl gle. When a second charge of +Q is placed at odn5j.9tgwk+,l6tqkwq5b z+e ne 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 of +Q placed at one of the other vertices?

  Which of the following0y9 ,do ctmn,z30xx dl is not a vector?

  At twice the distance from a point charge, the strength of the eleurm4x) :lgxzlw r dx 81zo.6hgezpxdr4,t)( 0ctric field

  Is it possible to have a zero electric field value between a negati5c 0ld6v; syyirv.p f4ve and positive charge along thsv;yf50 r dpic6 lv4.ye line joining the two charges?

  Is it possible to have a zero electric field :e ;y 5mm3sjnpvalue between two positive charges al3m ;n5jspy:emong the line joining the two charges?

  Electric field lines near psitive point chalmd)t(it(d 4nmrul.hl7yee . - *hjk, rges

  The electric field shownupr8h g: qxu.*

  Can electric field lines inq tf 9. 4e5 od47nyb5qpfwk9lctersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform eg/+q)j kg)gzflectric field. Givezg/fjq+ kgg) ) a statement concerning the electric field in the block's interior.

  If a solid metal sphe/l u2j2 wrukmfu;o*omob,3 / ire and a hollow metal sphere of equal diameters are each given the same charge, the electrico/u2,mfum/jrub w ioko 23l*; field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform0cho2 2tvh y,wd*u l0s electric field is directed straight upward. What can be said c2y hs0*t20lo vuwdc,honcerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrw o*dea9ga .cj))z.two./ u brium near an electric charge

  A positive point charge sdz4kr8m1/l yis enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has84 lyd/m zksr1

State three propertiu o /mss*7qkx:2kp4 qnes of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one elec7xr:zoa*t z(/h 0gap tua96k m p4w3bqtron 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 n q(3y)s h;dvgbet charge of +2.00 mC. How many more protons than electrons does this piecg;( )syb 3dqhve of plastic have?

  What is the charge on 1 4fogcpnh,;ub /3l cajup 81u 1-3i qffkg of protons?

  An atomic nucleus hase.+zw7sm i m-pg mj9w; a 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 e.ja/z ah g/2bv(x8 ek2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betw /x2aezg h/va8(.ejbk een them?

  A 1.0-C charge is 15 m from a second ch.bb2zl zbkjt4j* s +omup s86;arge, and the force between them is 1.0 N. What is the magnitude of 6js+pbbj ul2zz8t;4k *b. smo the second charge?

  Two 1.0-C charges have a force betwgw:0;j d,my6s y2 ryxqeen them of 1.0 N. How far apart are they?

  The force between a zfha-l yss a95v7o,g/$30 \; mC$ 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 they a/ c*4 cca2qpokre moved to a new separation of 8.0 cm, what is the electric force between them ap ccc/24kqo*?

  Three identical point 6l. u6y4/eaxg bl1gf;j9nt5f xxlrp8nb3j:x charges of 2.0 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 on the charge at the orignbj:;eu ll9 /6rx5ja3tn8ff6 p4xgl by xx.1gin?

  Three point charges adfwe)(f 0s c7gre 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 cm, and +4.0 mC at the 100 cm mark. What are the magnitude and direction of the electrostatic force whi)(7d g ffewc0sch acts on the charge at the origin?

  Three point charges are located at the following positions: e6x 5 bln.e5nvv/mpld0u/fvpf4 w7 )aQ1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.4afdel p v/ m5 /5npxe7vfv. lnuw6b0)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 a second point chl ip5brq sxxyf) 1/54c;h.xcj arge 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 axi 5q./h4l f;x)5cjsp xcb1ryt the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0iwh 0e9:zmoc 0.10 m); Q3 = 5.0 nC is at (0, 0). What isw0h9m i0:o ezc the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0)hnzi+g,tw, b4y0rv e/; 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 force on thy h ,rvgb ,+w4et0ni/ze 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices zfswr.ja p72 2of an equilateral triangle which measures 30 cm on a side. What is the magnitudeasw2fpz.7jr 2 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. At what ponu8+u4jy tanf cb2e8( int, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic f nta( e8 n+u2yuf4b8cjorce 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 m. Whe t (mcvt8:q2mvre on the x-axis t8q2v(t :mmc vcan 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 ayw nljyv, *jx m7zz7)p,gz(4d t x = 2a. Where can a third p,)pjzm yzy*vw7l 7 4x(gz,nd jositive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. y*qayxg 8( mx)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 attraction of a fixed 2oooe,* xg0fwlb, 8jh proton some distance above it. How far above the electron is the proton? o,e o8,jo0x2 *lwghbf

  Two 0.20-g metal spheres are hung from a common point by nonconducting thri+d3 w kw( hnu4p/cku9 4d0rrqeads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apartwcru4rp9w 4in/ d( 03kudqhk+ until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40euyzgn 2 0q-dvrw,)nzo() f (xl. What is the magnitude of the electric field at)vdu q(xw-z )lorf(g2y 0zn,n a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric ezy +gv74b1+mc0b)ucudkt ;sfield at a distance of 1.50 m fbg 4bs)uu+c07+c e1ztd;v kmyrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charg42a u6 97tmthy3h oc9(jys oybe. What is the magnitude of the electric field at the location of the test ahh42b t ot(3myusy7 6co99j ycharge?

  A 5.0-C charge is 10 m from a small test chargei 7 x7akxjt4t3iv -jxc4y4 (bk. What is the direction of the electric field tj biv74 xkk-j4ayti3(xx 74c?

  A 5.0-C charge is 10 m from a sml 19gx4cql :xiall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chi41qllc x9x:garge?

  Two point charges ea+cggt7 3t 8axc f8us9och have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric fiegu8+o9ag8f ct 73cstxld at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 lp4j kz l1/6h.srzia (cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm4s.( hrl6 p1ja/klziz mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 /c( dut56/o vu.lzuxzo; rn k+mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is tt/u ckodo/+un5u zl6x .r ;v(zhe electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = t1 ylz vs2+mr2ai )4rn0.20 m. What is the magnitude of the electric field at the point midway betweenilm+2nszay1)rt r2v 4 them?

  Three 3.0 mC charges are at the threes- wie 76da+k743 wn zvi)htec corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Ft7 ewvin z ik c)h36+esw47ad-ind the electric field at the center of the square.

  Consider a square which is s:hmkft 1 +yw,1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC ath,sk wmy:f1+t (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?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in hlh+ 5gx4 6qcnhlv.t z66 7uvea uniform electric field. What is the magnitu 6zl+h6qnv. 7t5uv4xh6gelc hde of this electric field?

  A particle with a charge of mlt3e7+ gqhwis*m7n .4.0 mC 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 onu:ddopf 8j 2 fe1t 4;artqd7(r2mo5f f 6000 N/C pointing downward. What charge must bom ro d ap(225;jen4tdf:r 8qf17dtuf e 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 b jolj2 p; e83pup;-cqxall is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of th-qu2 jc;jopxp8l e;p 3e electric field?

  A metal sphere of radius 10 cm carries grw1 3q;4zx b4-tcr)1izizsf a charge of +2.0 mC. What is the magnitude of the elect1q wzzr-1r3itcbx)iz gs 44; fric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.x41wjldy wmcj 9 e,(9s q2agij1hs5 +x0 cm carries a charge of 3.0 mC. What is the electricwlaxih xqjj c, j1e+w 9ss1gm(y95d24 field 6.0 cm from the center of the sphere?