State the law of cons rbuhvtg8gy 8(;yw 6z7ervation of electric charge.

  Is it possible for two negative ccjn1 lm,smq 47 lg3+mjharges to attract each other?

  Is it possible for a positive and a negatct9bx-xuiu: 2(th .k qive charge to attract each other?

  A glass rod is rubbed with a piece of silktbnh 3s. kk6r;x; n+mu. During the process the glass rod acquires a positive charge and the sih ;sk ; 3r6uxn+tmn.bklk

  A proton carries a

  The model of the atom showfls;b3ncouum wj nv;99gg s042nw8;bi:q+gds a

  A neutral atom always hasjpio ,(29hj91 o ex*gc1vdv da

  An atom has more electrons than protons. 8kte3aye: y lymle7.e50mw,j The atom is

  Materials in which the electrons are bound very tightly1;jfa. i e8njs to the nuclei are referred to1inej8a;j .fs as

  Materials in which the electropz -.5lsd;2eqdi fdn7hkm4+a4lh9h ans are bound very loosely to the nuclei and can move about freely within the materiallnz hhdd ;hd7a4 ies +5 p2-lfam.q9k4 are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bayh r0mbn*e z:6hhc )/hr. The end of the metal bar farthest from the charged rod will be chayb0)h hrehhn/m6cz :* rged

  Sphere A carries a net positive charge, and sphere B is neutral. Theu ) y0vgag0ul7y are placed near each other on an insulated table. Sphere B is briefl av)0u0yglu7g y touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope pos(hpm*:wwegpmomz)w28rl li0 b al9 . 1itively?

  An originally neutral electroscope is briefly touched wit o4ujq;:hkz ;wh a positively charged glass rod. The elech;zu:qw; 4kjo troscope

  An originally neutral electroscope is grounded briefly while a pr6mfjoi4ij 85 ositively charged glass rod is held near it. j5r mi8oij6f4 After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separiom22h, t pz5cg3b0kej, jzivgpp,- +ate. Then a negative object is brought near the electroscope, but does not 2 hi52gz,mkp,ocjj0, g bipp+zt 3 e-vtouch it. What happens to the leaves?

  A large negatively charged object is placed on a+o6is73 knuoqn insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches on+6o7uis3qk 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 is the final charge on each ball?

  Charge is

  What are the units ofw 7cu.;zbxyeum ,m 7.d the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largervlf7 pr 8ztug-kw/1umx+z.y 8 in magnitude than the second charge.7gx/mz p1ru8ul.wk8- z vy+t f

  Sphere A carries a net charge and sphere B is neutral. wr6qsu aa5zh 81+a6baqjvxs6.ic-+v They are placed near each other on an insulated table. Which statement bestqsv5bc .xahr iju6 w166q++ az-aa sv8 describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the lzydl (8s;nw 5charges on both objects are doubled(8zs ny lwd5;l with no change in separation, the force between them

  Two charges are separated by a distance d and .h5n2,s7 9le zp/ykcmaj4mth exert mutual attractive forces of F on each other. If the charges are separa ne2 m.yth4h9klz/ 7 aj5m,spcted by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other wivq0a6y;iuq v2 th a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the sepaaqu 60vqi2y; vration distance 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 happens to bncb*mi: vkci/, s6+u6nmijtz m ;j )2the magnitude of the force on the proton if a second electron is placed next to th;nj)kvtc*ic s/j mz+ub ii6m,: nm 62be first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens to zbe7u ;*rsondyvs9y08 1h3xd the magnitude of the force on the first electron if a second electron is placed 8y7 z9x*ryehs3;svubd1 o0 dnnext to the proton?

  An electron and a proton are separated by a distance o *otv,z; wj1gcci*tpne4o r 1;f 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the proton?cnwo topti 1 ,z1*;rj cv*;e4g

  A point charge of +Q is placed at the center of a square. When a7jl+e2y 1g oe lat4uu5 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 theg1 e y45u ejo+7alt2lu 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 f: *hv :wmzpe5placed 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 me5wf:*zv:ph 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 i/pm og.n,xv-t 0tfk,3jsz*mus not a vector?

  At twice the distance from a point c*kvp++ k 9/basbgf/c: qa y;krharge, the strength of the electric field

  Is it possible to have a zero electric fieb svfd(2mil 6-j-bj :l7d cdv2ld value between a negative and positive charge along the line jdvi-2 lvc2b(dfdsjm- 76j: l boining the two charges?

  Is it possible to have a zero electric (woy6 z. wm ahhy rt:a 4q.)4da2s*heffield value between two positive charges rw.4afeh:hz( toy a4hs6ym .w*a )d2 qalong the line joining the two charges?

  Electric field lines near c-f l g4owo,rooj(:h/psitive point charges

  The electric field show :7x9web cr8a1(uq5lh vykrd+n

  Can electric field lines intersect in my6l 0t:q;dzufree space?

  A solid block of metal in electrostatic equilibrium io+hqi9 z)m,ess placed in a uniform electric field. Give a statement concerning the electric field in the bloczoehs9) +i m,qk's interior.

  If a solid metal sphereetkt a;xn c/dv -9aa;hbw7(.q and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface i7xank;ct/v-qb d.; e(a athw9s

  A cubic block of aluminum rests on a wooden table in a regio ,g9)s1 uyga)s:w3yst d(sr 25jxmogxn where a uniform electric field is directed straight upward. What can be said concerning the charge on th)s)xsrsw53 y2g(tm syo1:g a 9gdju x,e block's top surface?

  If a conductor is in electrostatic equilibrium ntzua , -z8om)rear an electric charge

  A positive point charge is enclz0t +x cfajh;2osed in a hollow metallic sphere that is grounded. As0a tjh+fx2cz ; compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of condup-j+ )fg i+jylctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is 0(4 npugbhai 3$e = -1.6 \times 10^{-19} \; C$. 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 maeyz ,g6 55kuu q;rqzd/ny more protons than electrons does this piece of plastic haveq urdy5 z gue;,zq65k/?

  What is the charge on bdb5bd)0sm otcf v )0*1 kg of protons?

  An atomic nucleus has v i6z3l5 t nn e:tyxam8mu)k.6a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, senfc5/ 4xx y4mn7)sbi9-ows vhparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. )xxhcsnm4sy4of5w7 9/ bn- vi What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betweeiteu nin9+./;v 4fc)hxnof)rn them is 1.0 N. What is the magnitude of the s4 +/ufnf in;ctohex .i r))v9necond charge?

  Two 1.0-C charges have 8 gpkitx(r+;za force between them of 1.0 N. How far apart are they?

  The force between a iiffl/0d- q l5$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, ini0bi0o16 8v+y o,mjujhggtz/wtially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation 0gy/b z+o0gujvim1w8 j ot,6 hof 8.0 cm, what is the electric force between them?

  Three identical point charges of 1q jt 4d-pro*aj+vc :y2.0 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 ele+*jqy: 4cj 1-trdvp oactrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 muz.; xvss 10wjC is placed at the origin, -2.0 m C to the rwu0x.zv;jss 1 ight 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 = 2.00 ylx pbv)m6 uyc5++sw 2x49 behmC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is th9v+bc u lp+xy)s542mw yhx6ebe magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the too-4ew ou c8-center of 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 c-tcoo8e 4uow -enter charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0km4mz3*i 2d7fuazj2a5 k: sya.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). : jk5u7y2z3i ak*s mfm4a2d az 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.outbz m4/ig );le scfsh, -)-k0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the-/lg)k - s,i4fto b;)cms hzue direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vn lcl/q y-yc; v/;,x f9(gfwbfertices of an equilateral triangle yb,v x y-n;/f( 9wf/f lccgq;lwhich 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 separat06 fz:wrq+ 9qnb 7rk((p axoixed 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 electrostz +x nx(qrfrb:09 akq6po i7(watic force acting on it would be zero?

  A +3.0-C charge is at t;yc1z (dlmfy2he origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can(lcdy2zf y;1 m 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 wh7xyj+g( s9;i u7gvl x = 2a. Where can a third positive charge +q be yu7(7 g+;l9vjgh sixw placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. l 4xdtj06cotb h;bh1- :1;jlo9ojmm dA 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 4uthaa3 (l*24 tclerv fixed pr(2t* c e va3tu4rh4alloton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres arekd 6 /)t:ktnqz hung from a common point by nonconducting threads which are 30 cm long. Both kq6dk)tzn/ t: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 +40 v*nriluqoy9);9sz w ny-5ysb,q4jw-e. What is the magnitude of the electric field at a distancls*q)uny i5q rn4 zw99-y,-s;w ojbyve of 1.0 m from the nucleus?

  What are the magnitude and direction of the electri 5fi,(-mdaxkhvu8ge4 c field at a distance of 1.50 m from a 50.0-nC charg mg5xi4 af(,hek- u8dve?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofkw9;o)) q7dvq f t-pqp7smyb0 the electric field at the location of the tefw0)do;qbvs7)y7 m kq-qptp 9st charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directix* +jygcbu3d) on of the electric field? +yx*)jbg dc3u

  A 5.0-C charge is 10 m from a small test charmm )w+,1 lntlji+k8 zb 8gk1ocge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charg+mo wml8)c,kg8jkl1 ib+n tz1e?

  Two point charges each have a value of 3.0 C oiug6 9gf46tf0v m ws2akx;q ,and are separated by a distance of 4.0 m. What is the electric field at a poinikm;60tgqvsgwf96 ,4 u2aox ft midway between the two charges?

  A 5.0-mC charge is placed atw/a ekca3(7s m the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the 7a amek/ws(c 3electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 tj5gbwqf8a s/-(pk .qcm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the tjtkqb.w(/ s5 -gpqaf 8wo charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are pvkl (+;w; qc+ lcpujx-5 lmg)ulaced at x = 0 and x = 0.20 m. What is the magnitu+muu)cpl; j(v 5k-w+gxql;l cde of the electric field at the point midway between them?

  Three 3.0 mC charges are awx1xd i ,j1(cjt the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squdi (jwj1x ,cx1are.

  Consider a square which is 1.0 m on a side. Charc je;,.h7nkdxges 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 eleexnc,;.kjd 7hctric field at the square's center?

  A force of 10 N acts on al7qm yyhg d:+ ,lbuk94g8(efj charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitud7l+yudkej b,8g f4 gm(y9q :hle of this electric field?

  A particle with a charge of a82z9dj ,qouqn e5kqb 3c b1l/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 electriakr 7d:8vhb*u8u(8ir yuc j1ass0 e r;c field of 6000 N/C pointing downward. What charge must * 81csir; a: r0 buv(ek7jsyurhad88u be 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 bbh*g ) o 66-vtfc kvib0a8/ptgall is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and directiov-kb*if c gov 6a pt0bh6g)/8tn of the electric field?

  A metal sphere of radius 10 cm carries a cb;p *3fm965jfephv0bot.h jw harge of +2.0 mC. What is the magnitude of the electric field 3 0 wftphf mjjhp*5vebob .96;5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of h 147fpzwk *f;zlnqx0 3.0 mC. What is the electric field 6.0 cm from tk1nf;wz*x47qh l0fp zhe center of the sphere?