State the law of conservation of el2 gergd;f82dh ectric charge.

  Is it possible for two negative charges to attrnc0jq ew+))w bd51 ktract each other?

  Is it possible for a positive and a negative cnqpek (hw0pafzg, (,45 c1 thkharge to attract each other?

  A glass rod is rubbed with a piece of silk. Dur:km kvp2356gc n)ao hping the process the glass rod acquires2 : k vknh)5gmoca6p3p a positive charge and the silk

  A proton carries a

  The model of the atoctd5w dx ;y98am shows a

  A neutral atom always w 0yghs2*b 0j8z s4bfc;* grsahas

  An atom has more electrons than protons.1 eefth5-a )rl The atom is

  Materials in which the electrons s1 m. wplu*zc1are bound very tightly to the nuclei are referred .w c1*slpmu z1to as

  Materials in which the electrons ahy.o wjj e.63x-tj(dfre bound very loosely to the nuclei and can move about freely within the mofh txjj.6dw( yej 3.-aterial are referred to as

  A negatively charged rod is brought near one end of lmh m aoi,5t2mz,w9 vp g.uo)-vy9qa0an uncharged metal bar. The end of the metal bar farthest from the charged rod wim29 gy,.,v lt5-a h0a uziwov9mqop)mll be charged

  Sphere A carries a net positive charge, and sphere B ijpylp7l -z--a s 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 pplay l--z- 7jcorrect?

  How can a negatively charged rod charge an electroscope o5:4xo +9 pj8ymuy9iox ca0qy8wmg i z(:d8wlpositively?

  An originally neutral electroscope is briefly touched with a positively chargedxuo0 u:uiq08p glass rod. The el0uuqp x8:i u0oectroscope

  An originally neutral electroscope is gr* g 2nguda t)l,)r;buqounded briefly while a positively charged glass rod is heldu*r );tu, ab2l)d qggn near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sepd9m,iq mw(ey 8:giqg:bs9q 5varate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves,:: gqqiw8 imdsmqyv9g( b5e 9?

  A large negatively chargz ng/;. um:)qe,eajfued 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 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 c nuu )m/ e;zq.,gef:ajharge on each ball?

  Charge is

  What are the units of the Coulomb conepy47h5p, k lrstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fa mr,5jhj8i2 nzx q8v*irst charge is larger in magnitude t hv8nri5qzjm xa2, j8*han the second charge.

  Sphere A carries a net charge and sphere B is neutral. eujf ;fxv *clmc6-x0z;y,v.m They are placed near each other on an insulated table. Which statement best describe;cv6ym xju0*;ffl.v- me,zxc s the electrostatic force between them?

  Two charged objects attract each other with a certain force. If mll* 2k4f 6qshthe charges on both objects are doubled with no change in separation, the forchlk m*4 lfqs62e between them

  Two charges are separated by a distance d and (gg d-xv88do ck4cf o)exert mutual attractive forces of F on each other. xk8cfcv 84d- )(ogogd 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 force F. What happens t(j ch m28qwl1an6 qb1zo the force between them if one charge is doubled, the other charge is tripaq 1h2l8b1cn(jwq mz6led, 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 m. )ce4kc tyx: :dWhat happens to the ma:dkc4 y :tcex)gnitude 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 of 1.0 m. What xkpy jekjkxf1r27+f :s a-+f6q p/yo6 happens to the magnitude of the force on thy+j pjfaekf6s/ypr 61k:f-2q7+ x o kxe first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. /+gge9 uifk, q What happens to the size of the force on the proton if the electron is move /gef,q+i g9ukd 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second point c,j i)ha h*i p-xyyf1)xmun x51harge 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 force acting on the positive charge at the center o ay-p) ,ujxhhy*)1mfi5n ix1xf the square?

  A point charge of +Q is placed at the ceu a2rdh8g:ttf 41 v156 zgm x+lwzw4epntroid 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 o1d lguew8az ht1p mvx4f4z +r g25w:t6n 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 i1q6a inf8yfxzdh8+jig mfy. +1tzz0 0,gi;gks not a vector?

  At twice the distancebxl nh,.t l/9 +gedhi,qn 4+y5vu-ps d from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and p * j1skt/gl 4b(p4jlgxositive charge along the line joining thj4g/jg tp1xs *4( lblke two charges?

  Is it possible to have a zero electric field value between two positive chag1-rk r m6bo2irges aloni -1bom6 rk2grg the line joining the two charges?

  Electric field lines near psitive point char7hkz76py iq6rn q)t1* 7pckkfges

  The electric field shown(9. /r,clz:74h w.pljylvj yhog vbh+g:x*tr

  Can electric field lines intersec 0jvml. um4h)pt in free space?

  A solid block of metal in electrostatic equmy)bg/b l5 orfrja/4qvgl*hs1w: -f4 mi(ub1ilibrium is placed in a uniform electric field. Give a stategsh)f5 y gqll1-/vb4 mj1aw* r4 if:(brm/oubment concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere jt 4m;+ mghkvdzv0/,nkrke2 ) -hv6mr0y6 kguof equal diameters are each given the same cha; hhvrk eknkm z/)jkv6dym+m0urv g-62t g,40rge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tabs,j (jfv-4z)cjce l5ile in a region where a uniform electric field is directed straight upwfci 4sjel,5vjj-(z) card. What can be said concerning the charge on the block's top surface?

  If a conductor is in electwncp)xl*ua:tl*am(h 2 t d g9.rostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere ag0z ;d3 sxvo, tx9rzvah8q ;) 4o+zpwthat is grounded. As compared to the case without the hollow sphs wvrgd;x9o4+ ),z t0a;zq3zph8a xovere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static e6- kj lc,7bbmvquilibrium.

State Gauss's law.

  The charge carried by oneirq,+*r3m ymqjq 9+6 6wssaim 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 chargo4 oe8o. )dgheiicg 07e of +2.00 mC. How many more protons than electrons does this piece of8do7h)gc eoie0g i4. o plastic have?

  What is the charge on 1 kg of protonsahoc) +c kkev0vpp+) )?

  An atomic nucleus has a chargeoj.uvag98)u u ipr6:gej ,yw: jhs, k7 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 of/wop, x beyl82 k,l.2.0 and -4.0 mC, reewl8xo.o pk,y/l f 2,bspectively. 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 betw;hi b9lum/ uo3,8s sdween them is 1.0 N. What is the magnitude of s i /8dsu lbmo;w3u,9hthe second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How fegw383m7p *e3spbtwm ar apart are they?

  The force between a , 8d/ktvfau-roto 2 d-2hjs6w$30 \; mC$ 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 1e0kpmem14cq hu1y;1 b .0-N force. If they are moved to a new separation of 8.0 cm, what is the electrqyu4 c1emh1bp0k 1e;mic force between them?

  Three identical point charges of 2.0 mC are placed on the x-e7 e)mes0t32vxf y l4jaxis. The first charge is at the origin, the second to the right at x = 50 cm, and the thirf 2)jx370sm4teeeylv d 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. A charge of +,bt;s:ws q *v8g zm2ff() dy;pzf7oae 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 which acts on wqy;,*bt)z;8sosf2 e gm( pz7affd:vthe charge at the origin?

  Three point charges are located atjp9zw7c)3c iq the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at xj) ci7pczq93w = 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 placekse*qj 3w* *o:(nll34 wmd ufcd 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 center. What is the magnitude of the force that acts on the center charge if a third charge 3 *s43n:ej* cmou*dk ll(qw fwof -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0n 0yuf5lsfm: 5); 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 force on the 5.0 5l :suf0 5ynmfnC charge?

  Q1 = 6.0 nC is at (0.30 m, 0)8gu.7y tviaayd/bj6 +; 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 th 8i.yt+vu/ gjd7aya6b e 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of az81z/l fcu(,fl:eomscga 72fn equilateral triangle w ozcmfef, c2ll/gzs f(81:7auhich 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 xhomjfc40zw ;u;)hx :+4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place az;x)hhxfw:om0c4u;j charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C ch6+ gup5leb m;jarge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it 5mg l+ej6ubp; is zero?

  Charge +2q is placed at the origin and charge -qhm fj6p fb,;7b is placed at x = 2a. Where can a third positive char7 bf;6 pf,hbjmge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 gc9v0o+spdb j. . 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 fixe aluzk d5;em4:3k2kzkd proton some distance above it. How far above the electron is the z kkeua3k 2dz5;km:l4proton?

  Two 0.20-g metal spher-nb7q gddvm.. bw22i q.n q5rles are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electros.d 2bnqm q2- 5 vlniq.grd7bw.tatic 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 electric l04:rj hnvk x;fiel;: j4xrnhkv0 ld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the ew.758erhql *bg2 uyarlectric field at a distance of 1.50 m*q r78ry5.l aubwh g2e from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thq *8 o4 dakx+3:loaepue electric field at the location ok*3d:p + xo4ula8oqe af the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directvgpntr i y-q +3u+t6-hion of the electricqy6 n+-3utiprvg +t-h field?

  A 5.0-C charge is 10 (lqt/fibtw2k/ /bk w* m from a small test charge. What is the magnitude of the force expkw/ k2*w/l(b tiqb /tferienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each havel:h4at(r p:m a a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chargehr4ta::p a(lms?

  A 5.0-mC charge is placed at the 0 cm mark cv-.(d1 rm* u0ml -bhu b+quxi:p5mlp of a meter stick and a -4.0 mC charge is placed a( u+ :0 hmixdp-mv5b- ucl.qmprbl* 1ut the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed ai1q81v1pqkf am r:a7 mt the 0 cm 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 two charges is the electric field ze 1mpq1 kvri7fqa :a18mro?

  Two point charges of +3.0 mC and n4qepf5g6 h(: xnf fkrgz;u1;-7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field akq(x6rgf4 nf:ufzp 5h1ng e; ;t the point midway between them?

  Three 3.0 mC charges are at the three cornerdh +ctf)xag36s of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charga)6 dgfth3+c xe. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. 2 k9z+fuml8 lk Charges 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 magnitude29f 8 z+mkkllu of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mz29zm/p 1 q)t+s ,esifqvyjn1C when it is placed in a uniform electriqf) qszpv2 t,inj1/mz9ey s1+c field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC hasv k1 rbnj 2up;kx2vm75 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 electrqba2 0quh dl w1s93h3qic field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be su30a9q squ13lwh dh2bq spended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placs2vsssx4a:( a ed inside a uniform electric field, and is suspended against the force of gravity. What are the magnia:sx2ssavs( 4 tude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chargep )-q8i+ yftja.td kl+x7f+jd of +2.0 mC. What is the magnitude of the electric field 5.0 cm from th.+ txd+)f-d8lij tyqafj 7 +kpe sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. j9v ;of::nev xai:2ky What is the electric 9::; jnx2i e v:ayovfkfield 6.0 cm from the center of the sphere?