State the law of conservation of electric f7qs5cx a3m 5hcharge.

  Is it possible for two negat- 6keik.s9ou cbs(4q rive charges to attract each other?

  Is it possible for a poa,ov4pqbw * oa /pn )ikv4km.gt4k83ositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod z)(w j7fi. isir)vh+xacquires a positi fihwij.+rsi)) vx( 7zve charge and the silk

  A proton carries a

  The model of the atom shoid wg-dgg l853ws a

  A neutral atom always opdl):en:omtr7 g, 6 ihas

  An atom has more electrons than protons. 9ck lcq y6+ihrn3xn)5y kb3x. The atom is

  Materials in which the electrons are bound very tightly to the nucnte4r60r wl g7lei are referredert4 w0l 7g6rn to as

  Materials in which the electrons are bound ver,)3 tlhnpwn*1u k(g dhy loosely to the nuclei and can move about freely within the mater( 31u,h gnplt*d) nhkwial are referred to as

  A negatively charged rod is brought near one e)y3(1qw5 .ly wc2q2r 0adv lpbkl-4od0 euddknd of an uncharged metal bar. The end of the metal bar farthest from the charged w-3opd 0dla. q)c22(l evyr dwd0kq15b4uky lrod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. 7x3q :eiqn0 vqutsw *0 They are placed near each other on an insulated table. Sphere B is briefly touched with a wire t0 vuw qx:ientq*3q70shat is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posi, 4 t3foi5guj5qlv9n vtively?

  An originally neutral electroscope is briefly touched with a positively char (*d66i /7i67hpr qjilcxw kplged glass rod. The x idl/wrp 67jc6hi7i6lp(q*k electroscope

  An originally neutral electroscope is grounded briefly while a positively chargen 2u-fv.f 6u8oth:ogzd glass rod is held near it. Auvftzfo 6.h2nu: g8o- fter the glass rod is removed, the electroscope

  A positive object tou/wh6( cr s9rppches a neutral electroscope, and the leaves separate. Then a negative object is brought neapw(h 69c/prsr r the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged obj4s seok+*nf1 yect 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 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 of 4sse*1+yk nis the final charge on each ball?

  Charge is

  What are the units oht 5g ,ar3u ,6gbjnh9bf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is lar9j biaa8iv(rfv h6mzn (z :- gr9o;+gjger in magnitude than thvz;99- j6r gb+v o mjra hni8(f:izag(e second charge.

  Sphere A carries a net charge and sphere B is neutra3eoft; dzydc99)0v yf;u , xhnl. They are placed near each other on an insulated table. Which statement best desex)d93yzd nu0 h t cf;;o9yv,fcribes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the c0 btk9aaq/e2 mb hv5iq-jxk63 harges on both objects are doubled with no change in sepam5vkq/it x9bk qajeb6 30a-2h ration, the force between them

  Two charges are separ,cjwc7f: sbe 9h*eay( ated by a distance d and exert mutual attractive forces of F os:f(aybc h7,j9ecwe *n 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 x5()9m *u jpxgd k.uf)fb1:xabj*8x8kr y buqwith a force F. What happens to the force between them if one charge is doubled, the other charge is tripd** f(f bu j8.ukbqmp)x x1k:ba98jgy )xx5urled, and the separation 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 e:d m2z59o1esm+s ct,rnco k3distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placeo52+z,s n1mrsc3 c 9et emkdo:d next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What h(i2r5 ni5 xgrkw2lx9 ra.a 0mcappens to the magnitude of the force on the first electron if a second electron is placed next to the protna0x k2g 5icrxrli.( 5 w2rm9aon?

  An electron and a proton are separated by a distance of 1.0 m. Whatc,m-b fro62g g happens to the size of the force on the prot mg-2fr,c 6bogon if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second poin2 6)hps4pqms st 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. What is the magnitude of the net electrostatic foqh 2)s6 p4ssmprce acting on the positive charge at the center of the square?

  A point charge of +Q is placed yr:p:z6te8 what 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 wtz:8 e6y:hrpthe force that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followinrh5gp ub2t;+aofh t, 5g is not a vector?

  At twice the distance from a point charge, the strength of the elefhgv8m 1/+ce vctric field

  Is it possible to have a zero aj1m z1i0u:clr6vh+k3lh 4nw electric field value between a negative and positive charge along the line joining the +llrn3 hj1kc4wm ziha0u :6v1 two charges?

  Is it possible to hafearv sh1pu52 2g 2pn6ve a zero electric field value between two positive charges rvgsn2p6ue fp h12a25along the line joining the two charges?

  Electric field lines near psitive point charge,tr9yf.f +u cts

  The electric field showr2et a9c k shr x(mdvt:o18f97n

  Can electric field lines inte6 bvqyk9en i 0wx.p-s4rsect in free space?

  A solid block of metal in elj oz7elsl(haa8d/p0u5bfu2( ectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the blo fu/ d2aup7 (e(sbzho8 lal05jck's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameter:u*y 2p 7gvosjf n81lxs are each given the same charge, the electric field (E) midway between the cfy12 x7u*jl sgvno :8penter and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform2ry9fb3o dvm5h6a /yc1 uy1fp- *cinb electric fielf c r5 v3y -f*nhcy9i1am2opbb1 /uyd6d is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatict69nqc9if* -v*yj i38d dprao equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic spher(b.c3jpiin 2ye that is grounded. As compared to the case without the hollow sph i3( pij.y2bcnere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in w+q :ni n0ol4vstatic equilibrium.

State Gauss's law.

  The charge carried by sr9rq /emg to0y3id24 one 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 chwr /sv,s5hanmh*:vj(; ri ux .arge of +2.00 mC. How many more protons than electv:(nhsra *muis/wx.5; ,rjhvrons does this piece of plastic have?

  What is the charge on 1 kg of proton9;xzmff dt0 *zs?

  An atomic nucleus has a chd eblp3 xrq, 5 orlbbsa3 -8fe642xmj4arge 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, hmk8 u-ei5p.xs ave charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force be8p .muk-s5ix etween them?

  A 1.0-C charge is 15 m frfp9a*k5o3j ;0nhx) mn qd af.pom a second charge, and the force between them is 1.0 N. What is the magnitude o qp xd5fa)0napmo*9n;fh k3j.f the second charge?

  Two 1.0-C charges have a for48t8quykl9qe lye6on m; y:(:4h oedpce between them of 1.0 N. How far apart are they?

  The force between a sxylkl 88-h (i- nd1ng$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart mo8umf(17nbb, experience a 1.0-N force. If they are movm7(onb81mub f ed to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point cb;y:x + bf;t ijld zi50ppoh/md+g 8y+harges 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 ij+5tmhg o b; +0fldxyz+:i8y/dppb; force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC isn*s*sqrdp1rn ) t m7z6 pwjm-6 placed at the qp*njmsn1 *rz- p7sw6 d6)rt morigin, -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 at the origin?

  Three point charges are located at the following positions: Q1 = 2.00oep./ul gg q4k)+ro,(dl ov8h mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x =uq vg.hpl 4 gkr(/+ol8do,)oe -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*vfa v 41)dos fimcz-,5ttp p, 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 fzttdvsp 5,mvci 4f,)- a*1po the center charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (06 qmocz05cw(z wbt.:q .30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net fzm (:oqbww0zq c5t6.corce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0tqssiov.gg 9q31hsu)h4*ky 4 nC is at (0, t3 .q1khq)os *ssgy9uihv4g4 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are pl+,27lzx :rvry+kj .iyczro6u aced at the vertices of an equilateral triangle which measures 30 ,c rlozr uxky+.+762rizjyv: 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 anc)o9*20h- cwl xx usmnd +4Q, which are separated by 3.0 m. At what point, on a linuo- )x0s l*wcxmchn 92e between the two 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 *k. ja00bf+ltxl bcq; a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zckq*jl+xt.a fl0b ;b0ero?

  Charge +2q is placed at the origincb*b2-3jfc ;vd 8xwn y and charge -q is placed at x = 2a. Where can a third positive charge +q be yjb ;d*b8 c3wxvn f-2cplaced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totalupti6i)j+mziml c, xg.3h:f,, jk 6 fi 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 atbacf .a d9ee9yu+qq cz/9-0wytraction of a fixed proton some distance above it. How far above the electron is the proto9/bca +we 9-dz0fa y.uq9 qeycn?

  Two 0.20-g metal spheres are hung fro )l)o1ihsrx2 pm a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the anpoih)l)x2r 1sgle 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 th8r7idx im33zh: xk9 -ej)l lqge electric field at a dise-7:mk3ih9x 38zl q rxgjli)d tance of 1.0 m from the nucleus?

  What are the magnitude anngov svf vkj. +/2uw1fvs82 g*d direction of the electric field at a distance of 1.50 m from a 50.0-nC k8*v.o nvfg/2 vs2vsw+fj1gucharge?

  A 5.0-C charge is 10 m from a small test charge. Whapqw vbkex* 93 3ocaq(v0c +bx7t is the magnitude of the electric field at the location of the test chare3v k0o q+c9bpb c7q x*x(wa3vge?

  A 5.0-C charge is 10 m from a small test charge. What is the tm gglu:1o v 0rst850 yf*e rb7j/vb5xdirection of the electb e0g bvx rttosv1*r7g 8j:ly5m/05furic field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitlj*c 5 p+/ uv-2zuhs 8w*mfdsoude of the force2/d*-s s wu8zv5jh*uc fpoml+ experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each hcjc 5nd n042/ahy0qa pave a value of 3.0 C and are separated by a distance of 4.0 m. W24n0p5 q cjdncy0aha /hat 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 a -4.0 mC charg5ne41rw-a sqyw+4d9sm qq0p ye is pq 4 p9-0n5 4d1wsqyqwry+ mesalaced 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 mC chani0b dbq) i2u:rge is placed at the 50 cm mark. At b:bd )qi2i0 unwhat 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 g7glilb)z(n4js7l5 x = 0.20 m. What is the magnitude of the e gsnl xig7(7lb4 5zjl)lectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 sh6kx7 8pt:us m. The last corner is occupied by a -3.:8ps xs k6uth70 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges k6x5s apb/t,oare placed at the corners of the square as 6tbxs,5 ka /opfollows: +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 the square's center?

  A force of 10 N acts on a charge o6 wiojbo )oud26c.*xrf 5.0 mC when it is placed in a uniform electric oxwo*u db)j.co26ri6 field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC hasfb.+hi(rs7jv;xs6v z9r2 wr e 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 pej ju8vhz x+u80rffsy w)9d 96laced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for izr6fjhxe )dv9yf 9+08uu8 jswt to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball ish6: *jmmie6 58z-mjpz ef0eek placed inside a uniform electrip 0 5-8em e:jk*mmh6zie6fjezc 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 carif st9lxg +6n+ries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's+gn9ti+fls6 x surface?

  A metal sphere of radiuh;4zb 44m2jo9c *nl rv 4sodwxs 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphere?broh942vn;4c4 o *lmj w4xsdz