State the law of conservatiobh yysp.m8z7x-t1 yk 437iigan of electric charge.

  Is it possible for two negative charges to attract each d9qv2i7sna8 dhs+ 0 ujother?

  Is it possible for a positive and a l p4*usjqr/lmh5t09s negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the pro honvqyk+,4wpj-w+ o ,cess the glass rod acquires a positive cwj, y-qkph,ov +o w4n+harge and the silk

  A proton carries a

  The model of the atom shows k w/fdu9f qv -aj/5 klsm3.nldp-t32xa

  A neutral atom always hat:51w y 2bw*aamgv d -((myjszs

  An atom has more electhpz8 qgk6,w (erons than protons. The atom is

  Materials in which the electrons arrp(fd b 3w,n k3w45vtoe bound very tightly to the nuclei are referred tofb,pwt53n v d3or( k4w as

  Materials in which the n hs6ytb8k)ewlj6 l4: electrons are bound very loosely to the nuclei and can movebk6s 8nt) l6h 4:wjely about freely within the material are referred to as

  A negatively charged rod is brought near one end of an unchar+ gy04 uq.kpmt yvs;o(zwr ;o9ged metal bar. The end of the metal bar farthest from the charged rm o9;ugspy (;z o4v+.yq0ktw rod will be charged

  Sphere A carries a net positive charge, and sphere w5; krd-zzwa )j+gl:j B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is cow;)k - z+lgaw jdj:5rzrrect?

  How can a negatively charged rod charge an electroscope posnywf01ycxj+72 kxag. itively?

  An originally neutral electroscope is briefly tiz p/p)yvv 3, pqt1of8; h3kysouched with a positively charged glap3tvq) 8;f3z k,h1iop /vsyypss rod. The electroscope

  An originally neutral electroscmivo.8gec c98 ope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is re c.g o8ic8mv9emoved, the electroscope

  A positive object touchess*pp,x3z9 okx/ +n9i4hp a sgx a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not txh9 psp3k/x+agsz9n4p*ox i,ouch it. What happens to the leaves?

  A large negatively charged object is pla (p;bk6cdy 4t x7jhfx+ced 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 ba4 ;yc(hf6djb7 px+ txkll, 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 ks,uh)hd5/s vthe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dis(wi4 vx+-: 3kllbm tvgtance d. The first charge is larger in magnitude thm4tkgb v:i lw-x+l 3v(an the second charge.

  Sphere A carries a net charge and sphere B is neutral.1zbz,e)4na q38toqcs3b h:o e They are placed near each other on an insulated table. Which statement best describes ez1bt3nsq4q3o b, ez8ch:ao)the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the c.vfsz+g)/m5y k1cwjf oo2m s7harges on both objv cz/5 mskw g1my fs+2j)f.o7oects are doubled with no change in separation, the force between them

  Two charges are separated by a distancew5jrs6c 7d7y w d and exert mutual attractive forces of F on each other. If the chajcd6yw7 r5w7s rges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a fqwyv- z tr0;9dorce F. What happens to the force between them if one charge is doubled, the other c w;9vzyqr0dt -harge is tripled, 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 distance of 1.0 mhkfdsz48 1r6 m. What happens to the magnitude of the force on the proton if a second electron is placed next8h4 1fdmszr 6k to the first electron?

  An electron and a proton are separated by a distance of 1.0 m.344tvqf4jzm2kj0ukn )b r4qi What happens to the magnitude of the force on t4j2 fz4bik3jtnqum4rq0kv) 4he first electron if a second electron is placed next to the proton?

  An electron and a proton are sepdeimgmj/ . b6kwc+)om8nem7 3 arated by a distance of 1.0 m. What happens to the size of the force on the proton if the) n86de.mkeiommgjmw7 cb 3+ / electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the c v:9fi.;qx,hh5sya vwenter of a square. 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 c;hiy q 9a5sxv.vf,w: henter. 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 tr,u1 m dpl1:ufi7pa d/giangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts onmlu 1,p /f:1uid d7gpa 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 v76pn0d+cy-bypfb a2sk6ifo, .j5 2rufb7e ois not a vector?

  At twice the distance from a point charge, the strength of the electl5/fhdm15tt ,r5o w uoric field

  Is it possible to have a zero electq3cw ; 7g-wzuyric field value between a negative and positive charge along the line joining the two chacg73-y;w uqzwrges?

  Is it possible to have a zero electric field value between two positnc z(sm yo *bu::5 omog/kes;0ive charges along the line joining the m5(e/ b:*:;ykgn suoc 0ooszmtwo charges?

  Electric field lines near psitive point charges6wr 3b,1ml5b / p.s ggy mo3mas2j3hfz

  The electric field showcux .*accqc(7 /v wh5kn

  Can electric field lines intersect in free spv4zy.ru *eg 5;n-qmts ace?

  A solid block of metal in electrostatic equilibrium is89 fraek-0ijajpbb9lt8 d1o- placed in a uniform electric field. Give a staib9 r0 9k1ed- ofa- plj8jta8btement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters a i( r0lrnbkvq:jbz*2/re each given the same charge, the electric field (E) midway between the centk n*r: j0b(q/2rlizv ber and the surface is

  A cubic block of aluminum rests on a woode ,5iclv8 m(qouducf67tp+ 8sfn table in a region where a uniform electric field is directed straight u6f( +d ucq8civfo5umt8slp,7 pward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatiu. j1jw4e n)xac equilibrium near an electric charge

  A positive point charge is encloso3(gq ;u euw:gj y46mm y;*ftaed 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 ht:q g aewm;m 6*yoy;uj 3ugf(4ollow sphere has

State three properties of conduc6w ;uc gjww:j.t9z l9etors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is3 -4 q*dp be/n 0lgy6vkghin+d $e = -1.6 \times 10^{-19} \; C$. 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 more pw:4r)vte.fc tp 7e 1hprotons than electrons does thish)rt:fwe 4cpe 1vp.t 7 piece of plastic have?

  What is the charge on 1 kg of j5 d,9g:sldxxv7op ul k3i9t/ protons?

  An atomic nucleus has a cha.bg-c uwno0ekd sox-o :lh6.2rge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatedtxw-8r 2 z(;p8cjytd s by 1.5 cm, have charge values of 2.0 and -4.0 mC, res ct;8ypxr d (wts-82zjpectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the * kqe9 y;vyla/z-f*ca force between them is 1.0 N. What is the magnitude of the second v9*caf*a/ ;qyz-k ley charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far p6ddnb6 *idtw ag 7(7vapart are they?

  The force between a 7vslzm6/ - gch$30 \; mC$ 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 t pavkh5 38 xqlh w-m:b*8s+8za8fqyl6zth8e re moved to a new k: e qz 6whap-8xv8t3 h*b8zy88asmhflqlt5+ separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 tp3u-**g2al9zth 2vd8 u/i0 fqva vh smC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, lu0*3-shh u*t2v g9ai qa 2zf/d vpt8vand 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?

  Three point charges are placed on the x-axis. / (d+/utxbn+q xq/ljp hu--e f 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 dixnjx/q+hu b fq+ep -/uld-t(/rection of the electrostatic force which acts on the charge at the origin?

  Three point charges are located atb8sqjgi++k g) the following positions: Q1 = 2.00 mC at x = 1 kq)i gbg+8j+s.00 m; Q2 = 3.00 mC at x = 0; Q3 = -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 pl1 ekmbo:7cy4 zaced at the 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 cent cm71ez4kby: oer. 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 = -1.0 nC is at (0vuj170 (pzk n-7wh hoh, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of thev7j7h( 1k- 0hwounz ph 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, 0.10 m- ejjni) 0pu;v 1qmjxq,tgw3 1); Q3 = 5.0 nC is at (0, 0). What is the direction of the netq -wv 1x3jm;teign,pju) 10qj force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an rgj /f2h3bq -hequilateral triangle which measures 30 cm on a side. What is the 2ghh rbfjq 3/-magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of 53qby3yznq r/g 2 .bp*o,dd ow+Q and +4Q, which 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 electros2brzp.bdngdoyq, 3 o *qy5w/ 3tatic force acting on it would be zero?

  A +3.0-C charge is at the origin a sk.+t1j2(oi gzedal:nd a +9.0-C charge is at x = 4.0 m. Where on the x-axiso1atjs2g . d+:(zk lei can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is plsr b;dw.4: etpm b7t(1g7jmvoa png .3aced at x = 2a. Where can a third positive chargedmo1rw g7snt4etpgvb j(:bpa m7 .3;. +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.n9 n q(2tgf7xf0 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 gravity by the attra7*uq m9p be)ouxsreir::/3 q xction of a fixed proton some distance above it. How faru)o/p ix:xr7uem b:q3se *rq9 above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads wq ;pa3(. n+zjavu5 rhslwd2e; hich are 30 cm long. Both are given identical charges, aah;; pj q( wu23n5sve +zdarl.nd 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 41w: n 3kqc8*chvfhj2, xd7s9; 0o zfytsgve vthe electric field at a vxcntfzvh8cj;ys7e3hv2 9k*qw fd 1o4gs0 ,:distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric f+w;gez1 --z qlpm7 c2pgza 0acield at a distance of 1.50 m from a -glm+0zpcz;za c71 gqep a-2w50.0-nC charge?

  A 5.0-C charge is 10 v5xn8zfi/nitc g hfj4os: t7i/)n9-u m from a small test charge. What is the magnitude of the electric field atcgifhiojix)f8v5/ 7n9/ 4s zn-n t :tu the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the 0wo rpc v32z3t7ehmzgnl99 r7direction of the electric fih3le r2 g79mrnczo0tv z7w 3p9eld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the f jm ,r5-cdag2sorce experienced by a 1.0 nC charge placed at the l gms-ja5r ,dc2ocation of the test charge?

  Two point charges each have t;k0;iu0, 8qmx deldba value of 3.0 C and are separated by a distance of 4.0 m. What is k; m8x0eb i dl,t;0qudthe 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 st 1shvn +mi-byc8 ,wyc8xre1dqh(, e) kick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm marecmyei,dkq )yx-+ cws(nr h 811v8bh,k?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stiw* kk27q0 vlfock and a -4.0 mC charge is placed a lvfw702* qokkt the 50 cm mark. 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 hw .o;9mif+ eyat x = 0 and x = 0.20 m. What is the magnitude of the electric field a ;h.o9 wifm+eyt the point midway between them?

  Three 3.0 mC charges are at the s0+qkdblj- d: 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 cebd:slqdk 0 -+jnter of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at glgkj4 g e4).kww. 7fvthe 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 electric field a wg)4jg4wke vlg..7f kt the square's center?

  A force of 10 N acts onp a kh -2co+z3mr kpct,upw05. a charge of 5.0 mC when it is placed in a uniform electric field. What is 5zp3c c-oa0u p,.wrh+pkkt2 m the magnitude of this electric field?

  A particle with a charge rmf6avn-oz7r3m7w 5s of 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 f tmjh n5xp4brv 9*j-h0ield of 6000 N/C pointing dowmrjpth 9h-vnjb4 *5x 0nward. What charge must 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 ball is placed inh)yb4 k (okan,side a uniform electric field, and is suspended against the force of gravity. What aronky,)4kha( b e the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge(*55dbqg pl- tc9peey of +2.0 mC. What is the magnitude of t5( plb*gce9dqpyte5- he electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0dyv*(xb1l 16a xco 3zn q3r k*uwp:f)v cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the cen3k :y6ruxv)xbncqw1 1 d *z *pvalfo3(ter of the sphere?