State the law of conservation of electric charnja twtyp ;ob:6(t79b j87oj hge.

  Is it possible for two negative c ecfu:r33nh:q harges to attract each other?

  Is it possible for a positive anv 5tlxl )ax(v-.ldv4gd a negative charge to attract each other?

  A glass rod is rubbed with a piece odo2l (h3woi 9rf silk. During the process the glass rod acquires a positive charge and the sr wh (i2oo39ldilk

  A proton carries a

  The model of the atom :g5epj-kd+c 4o flp6r shows a

  A neutral atom always hassz2b: :lc;ld e

  An atom has more ele 3/md/89.tj rhqvnytqctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refxkj1 ,e:9 y x oj7y k.tajip1hknc9l48erred t79k j1nktx ,o8cjypyi .:hj9akl ex14o as

  Materials in which the electrons are bound very loosel;9- khhh d 7 txpqq/gkxs3d8t0y to the nuclei and can move about freely within the materitsx9d dq qg/h;7k t8h-0xhk3p al are referred to as

  A negatively charged rod is brought near one end eobochs ep/l;;bo6io,: 77 avof an uncharged metal bar. The end of the metal bar farl:cosbaoie;hopb o 6,e ;77/v thest from the charged rod will be charged

  Sphere A carries a net positive c 3 vf6h)rm.kkqscra/1harge, and sphere B is neutral. They are placed near each other o1h)k. c6as vrr/f3mkqn an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod cwc:l t.)1pppi harge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively ch (cofi.wn;9p ,a jmsy2arged glass rod. The elec9 pnscf yi.o(a;j2wm, troscope

  An originally neutral electroscope is grounded br 7y7 q1:)abj5i6g+ yikqpucleiefly while a positively charged glass rod is held near it. After the glass rod is removed, the elecg+jc qu7)a7qlk:i yey 16pb5itroscope

  A positive object touches a neutral ;v( *vey 3znquelectroscope, and the leaves separate. Then a negative object is brought near the electroscozv3vq; * eyn(upe, but does not touch it. What happens to the leaves?

  A large negatively chimxmr2)0 ryw6:8 xrif arged object 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 ryir8 mx6:)2rw0 imxf 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 ths;/ar9ue)otg+p c.qbe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge i hezba+.p:u vc3n2x5as larger in magnitude than the seco25 3.b e+av:xp aznhcund charge.

  Sphere A carries a net charge and sphere B ) z:d6 w bbwi,:ucwmm/is neutral. They are placed near each other on an inswcz/ 6wm, mb):bdiwu: ulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If ther 1dbf* bn5h*n charges on both ob*db5rn fb* 1hnjects are doubled with no change in separation, the force between them

  Two charges are separated by a div;cy0u8omyg4 h) qmo 8stance d and exert mutual attractive forces of F on each other. Ify0 goc8huo; v8mm y)q4 the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eax+zb) b znbkazz79an1 4lrh:g w8,n e/ch other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their e)ga nn/+bbz zxz,kn4:7bh8 a9 zw1r lcenters is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated byl;f 1a op1z6vnox1e q2 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 fiq zvlfx16n;e opoa11 2rst electron?

  An electron and a proton omti 66i 1f9vh5.: ia odjsur ahq(+0hare separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron ihhaai6 m06r1fhqt+s. j:iu 9o vi(5ods placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What hytgpor xgzzr :t(r- -i jm+:/(appens to the size of the force on the proton y:r( + ptix/zgr -m(oztjr-g: if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squars8env5 m-f-a ge. When 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.-s5gv8 fen-am 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 e6l)knq+6of flrs (gua7 g.7ean 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 of +a.7k+g6 el(6oe uslrgqnf)f 7Q placed at one of the other vertices?

  Which of the following is 5(djg/8 zbb +4- ic d7mxtrdnanot a vector?

  At twice the distance from a pox3hu; yfc+1d3unj0 y3qpet.zint charge, the strength of the electric field

  Is it possible to have a zero electric f*e7wdi54vay of4: pny ield value between a negative and positive charge along the line joining the two charges?daf7epo4wv i:n *54 yy

  Is it possible to have a zero electric field value betwedo 3t5 pvh1 u,n2lpvu(en two positive charges along the line joining the two utlovp v 21hdp35,u(ncharges?

  Electric field lines nej(,n4g qqk-2cl 8ulruar psitive point charges

  The electric field show37qsg;ukkp ,3p i -lyzn

  Can electric field lines interseyt, /ayqj1hmo 0qvo 1y nwv(55jtoy66ct in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elect4d9ir e/alw-l4ntn- 7f ;wdamx (l q+d)nea5tric field. Give a statement concerning the electric field in the block's interiortq)a 4d nrd lmnaa7iwlfe(n tex;d9/+-4 w5- l.

  If a solid metal sphere and a hollow metal sphere of equal diameters arir (cl5h5zi2te each given the same charge, the electric field (E) midway between theh izc255tr il( center and the surface is

  A cubic block of aluminum rests on a wooden tablee j5pv:*w7ljgeh5v ddn-g + )p in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top 5p-7jv)gj 5p nedg* :hevw+ldsurface?

  If a conductor is in electrostatic equilibrium near an electri6sy f e;wj5j2xc charge

  A positive point charge is enclosed in a hollow metallic sphere ui8yc8c * .jbmthat is grounded. As compared to the case withoujmb 8yc .c*8iut the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibr8i2 tfrtiip5*y3 c-pu ium.

State Gauss's law.

  The charge carried by one electron is v b3-qn ixnpxy5 kx f+8b: v1og7wr2m/$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic hasx x;k7/p cn4ij a net charge of +2.00 mC. How many more protons than electrons does this piejn; x7i k/cp4xce of plastic have?

  What is the charge on 1 kg of pro,stozp 68b+mte4f+ sm;vki o(tons?

  An atomic nucleus has a charo1k() x hfyc:)iy6ltbge 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 2.0gs u)(3x t tp1(jnl;ex and -4.0 mC, respectively. What is the magnitude of the electric force betwe lugn31jx(x s)eptt(;en them?

  A 1.0-C charge is 15 m from a second charge, and the force bet: baxsmwd5m,fe ez13 (;vdg 6i lc*1szween them is 1.0 N. dcdmvs5bex e 3 gi6 ;z:f(*1a m,s1zlw What is the magnitude of the second charge?

  Two 1.0-C charges haves mqws/dd-,u6-* gpjz a force between them of 1.0 N. How far apart are they?

  The force between a n5ber hevk wpw4i) cejax.0t0/ 4 *rleaw*i 8;$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiall b n,i(kiq;w1lau s/t8y 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation/,k(l1awbi 8 qs;tu in 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 firs+ycoxj.z.3h 4vv*z: w3sn w/niz)y g qt 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 origin?w+w)ynsno.z/ vzzqvixc4 h* :j3. 3yg

  Three point charges are placed on the x-axis-q/ks i 0laly68ncn6rr-ak 6u. A charge of +2.0 mC is placed at the origin, -2.0 m C to the r66-lkay l-u8 0/rcksn6riaqnight 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 origin?

  Three point charges are located at the following positions: Q1 = 2.5hw ct2 bv ):yxs1u5mf00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; b5)my5: htf21uwsx vcQ3 = -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 9am-w2gvq t,g/ v se.ar) bp-bthe center of a square, and a second point charge of -Q is placed at the upper- g9qb2 r)-m.t-p b,aa/vg vwesleft 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = pn0/ kir0 cim+m4po-h-1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charge?nk+ /- p0cip ohr0mm4i

  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 atj ir:tz2;j fr: (0, 0). What is the direction of tr jj:rft:;zi2he net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vexqh0 *ubbv xf9.wx/o8rtices of an equilateral triangle which mo9u q*b xv/.xxw b80fheasures 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, wh:7j*6aml 9t )rv; ey+zgrpl6gupme. hich are 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 6l :j; meh.u*tr za9eprgy 76pvlmg+)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. tg3 sr-t-ya 2 x8:gsds Where on the x-axis can a third charge be placed so the net force on it is z-sy 832g gxtas-:rt sdero?

  Charge +2q is placed at the originscw b(hy zh 1 rdnph+fwp73x1020l:s n and charge -q is placed at x = 2a. Where can a third positi y7x z1c0+wppnbhhsldwr 1(0n 32hf:sve charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.m9hsc 6ka x1tv):gt g: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 of grav(bg07lgdwl ek zw*5m7 ity by the attraction of a fixed el7k(md zlb0g5w *7g wproton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commovsz4 2 3-sgc2t;qkoyq qg-d:kjk ax y8k1+t*gn point by nonconducting threads which are 30 cm long. Both are g-zg q1yvq;gj4c:qo2skysa k2 x+kt*tkdg3-8iven 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 eleczwokh2 rq f9f 9arf hba7f0o,jy7(,1ytric fiel ob90f9fq hyz j, 7 ,ok1afr7raf2h(wyd at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric 77pku:rr.2y+p kog3wg/q3ye b i yo 2ofield at a distance of 1.50 m from a 50.g7e3 7bk o2 wy/oor:r2qgi.uyp+k 3yp0-nC charge?

  A 5.0-C charge is 10 m from a sm m yc,ujlu48n)all test charge. What is the magnitude of the electric field at thm,jc4 uu8n)yl e location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is thet)36 ej9/f4vlk(bmkeh1 uuj t direction of the electric )bu kv1(t6 fj/khute 34eljm9field?

  A 5.0-C charge is 10 m from a small test charge. Whatx0bpo5nw0rxyi 4 /t ,j is the magnitude of the force experienced by a 1.0 nC charge placed5b0ijwypo 4xx rt/n0 , at the location of the test charge?

  Two point charges each have a value of 3.0 C andg7oe wpdf+608ua kn5h are separated by a distance of 4.0 m. Wh685kw fnh7dagpu+e o0 at is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and vgz;mx(z :ibx- h/u )sa -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 )/;gvi-u ( m zbz:xxshcm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick awl*t1ejr u5 2he-nd r:nd a -4.0 mC charge is placed at the 50 cm ewtl5h1rjn: eru d-2 *mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 m2gg-hfv2ulsihw0s(1 : cxu)vC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the pois : 10 vhg2(iwlushxf2u)c-vgnt midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. k w sf +j2pe8y-t5+g6ohd1yii The last cy-s+6 +iep 5o81dth2wkygjf iorner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is t -9f8wxoksg: 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 at (1, 1);sw:gt- x 8k9fo +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 mCmmw lcnehb63 )z* (t/d ma9z+w when it is placed in a uniform electric field. What is the magni*9mah)+dem lwzwzmt6(b n 3/c tude of this electric field?

  A particle with a charge of 4.0 mC has a ;5os j-lez1lk72kmqf 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/Ceaiul )08 h,*v/jmj;+(qw u yf3ebese pointing downward. What charge mus* +us/e v hy3bqe (ajile;j, 8umw0fe)t be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge ol 92ut)ug86/ 06gvz mmovhm.hbgu(0q clyxw:f -2.00 nC. The ball is placed inside a unif8vgcbh6lm0/0z2)mhx (l .9 :6 ogu mtyqguuwv orm 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 (z00syzc*by8cve ;k d +2.0 mC. What is the magnitude of the electredvzcy b*k0z (y0;8scic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whuc1m r-3/ vc0 5l i a5bmua-dsdt2:2zyx3b phxat is the electric field 6.0 cm from the center of thesay:-cbx u3 2lh/x5d2urtvdiz1mb-0 mca3 p5 sphere?