State the law of con fmw* t0 dxdh xl4rko82h:co85xrcku38c8 y x7servation of electric charge.

  Is it possible for two negative charges to attract each otmffe f ):gv*(lher?

  Is it possible for a positive and a negative charge to attract each othb2b( jh. xgut8er?

  A glass rod is rubbed with a piece of silk. Dur66l mbu3phlj t 8k0i2ring the process the glass rod acquires a positive charge an 606ri82k3ltjb h mlupd the silk

  A proton carries a

  The model of the atom shows +v3qi*ca17h; wtk( yxthzd m9a

  A neutral atom always hxpjfz; *9r bk4as

  An atom has more electrons than protohx9piohe x(;x 8p35f5h h9econs. The atom is

  Materials in which the electrons are bound very tightly to the nu 8b*ytt0kzn5zftqbx ;6 lr29wclei are referre8; qbtw26xfy9* b5kzt z0tln rd to as

  Materials in which the electronye(de *u1 *qijs are bound very loosely to the nuclei and can move about freely withqje(**ei 1uyd in the material are referred to as

  A negatively charged rod is brought near one end of an/l o1 kaelp wd98on6 l.-.+iwat+ly ho uncharged metal bar. The end of the metal bar farthesoo1pndewo-.+ ltw ilyhla.+a/ 8l9 6kt from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. o:uzv pjo (8xpeii19, They are placed near each other on an insulated table. Sphere B is briefly touched with a wire thapxo9up(,e8vi i:1zjo t is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope : .becu h;h- f7zylyq8positively?

  An originally neutral electroscope is briefly touched with a pquq)tqwl7 em5ywvc75o: g 8o1ositively charged glass rod. The q75o telvw: 51uwq qmg87oc)yelectroscope

  An originally neutral electroscope is grounded briefly while a positivel6ouvvp6 a e-, jnvv9x /+q+qdsy charged glass rod is held near it. After the glass rod is r6oq6 +d+ j9naqx/v vups-ve, vemoved, the electroscope

  A positive object touches a neutral electroscope, and the leaves sepaov4sup0y p zd+)9*faf rate. Then a negative object is brou9 )o+fpfz*ad0 u4s pvyght near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutralenrgx (5rhr)nl*e4 )q 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 negativqee *(lxrrrg 5nn)h) 4e object. What is the final charge on each ball?

  Charge is

  What are the units of the Co58a ,/q.rx ;lugrf.jg fyn2ci ulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. ziic+h m/z6g)w/r-ci0 -an va The first charge is larger in magnit 0 rnw/ici)-6-a+/a gczhmzv iude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. pys8h 7 sb/)ea They are placed near each other on an insulated tableh/8by )s7apse. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a cetabd+ z;+tz*hbfujbn( 0 . .cgrtain force. If the charges on both objects are doubled with no chanhj.fb +;zn0 uzd tc*t.(bb a+gge in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractipjgj;x/d(vu, ve forces of F on each other. If the chaj jv;,dg/u(p xrges 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 hapf3h0 pq-jk.g upens to the force between them if one charge is doubled, the other charge is tripleqjf-3k. p hg0ud, 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 dzc z g6bnt5.*qp0n)m m7j 9drxistance of 1.0 m. What happens to the magnitude of the force on the proton if a second elzq0c9tm) m*5 dnbx7rpjz .6ngectron is placed next to the first electron?

  An electron and a proton are separated 314u;or i,5y flc kmcdby a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second k53 cm yo,;rdcf1lui4electron is placed next to the proton?

  An electron and a proton are separated by a disj2fhay2k mhla 59,e9xl4/ns *ura ;vxtance of 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 ph29lnlkehx;v a,axay j4 r *52su/ fm9roton?

  A point charge of +Q is place-c0l+y.wnhlm s.0t 3y,nbf k9b2cnlad at the center 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 center. Now, identical charges of -Q are placed at the other three corners of the squ9wy3ck ,00l.n a.+thf ybmb n2s-ncllare. 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 t9/; 1 djmwpj hqu2x)unhe 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 the force that acts on the center charge due to a third charge of +Q placed at one of the otherh)xwnp;uqd291 jumj / vertices?

  Which of the following;r h uao0 ffb7)s2cxo(q5*c4joaf5 ia is not a vector?

  At twice the distance from (yzi m2;ddl smez*9ew9 )c+sv a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between gr; h qt ,p2e yka8ls9hse/+i;a negative and positive charge along the line josthah +ie,/9q;yls2k;r p g e8ining the two charges?

  Is it possible to have a zero electric field value between two positive(* wm )cg5my m7. cfj9riwh*lk charges along the line joining the k5 mfw)7gyl.m hrw*j*9cmi( ctwo charges?

  Electric field lines near psitive m sdz;lkp*4;e point charges

  The electric field s-r2/ya2jyjy-8a 8 :aa ldf xkrhown

  Can electric field lines intersect in freedrfbbf+ijwd80 z-7jbv 9r,b+ space?

  A solid block of metal in electrostatic eyxk8ylch p.+ (n(y*zd bwi4)sy/3p wnquilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the blk )dlzips cw8y(n 3.nx4+wb*phy (yy/ ock's interior.

  If a solid metal sphere and a ho4wlyo7y m y ,+ouc*,-0i;wi xvyvnxi7llow metal sphere of equal diameters are each given the same charge, the electric fieldw+ u cviy;ml yw,v7yxionox,0y4*-7 i (E) midway between the center and the surface is

  A cubic block of aluminum rests on a*uu:c: nfs9cc wooden table in a region where a uniform electric field is directed straight upcu:cu: 9c*s fnward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an eles/3 +nbv 7wvzg4,blr hctric charge

  A positive point charge is enclosed in a hollow metallic sphere tk0eo ix -nxejtn(l7()hat is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hoik 07( tnelon(ejx)x-llow sphere has

State three properties of conductors in s 4dagm9*ba+jg/uuqgi ox, f( e7 l6fm7tatic equilibrium.

State Gauss's law.

  The charge carried by o sq6a xe+x).m eezqb(;ne 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 charge of +2.00 mC. How many more protons 5q wmif)4bw6yj 8 e5wvthan electrons does this piece )vwj8ww y4 qifem65b5of plastic have?

  What is the charge on 1 kg of protonsvn3ga 7/w4x99pph fn z?

  An atomic nucleus has af ) qozg1o-qnn+(p nf3 charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separ:lo 2.-two9z stqxrl 0ated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric 0x9:tlo2 . q-rtsw zloforce between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1k9ix1oymfu+y0 v7 .bmb i5i kyd/ ti/88i7dju.0 N. What is the magdi7 ibjkobv 10tf8 m d79+x.k8/umy/iyi5uyi nitude of the second charge?

  Two 1.0-C charges have a force bemgg k3eub)w 3e :x(p8ofkk63g tween them of 1.0 N. How far apart are they?

  The force between a 8,s+ gfxw ld,v lx;.6pjy)dvf$30 \; mC$ 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 1.0vw9 .;b8qdr- iqgjgjf; s f2q+-N force. If they are moqbidsg;f9 w vq+8f g; -jr.qj2ved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placedqpqrj7 ;/m)cx on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm 7x/;mqp c)qrj, 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?

  Three point charges are placed on the x-axis. A charg s)+x++v7q huj;f v axmnwn(f2e of +2.0 mC is placed at the origin, -2.0 m C to f 2+nux;x7+m fv+( )waqsvjnhthe 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:( qpdmxj0 8 mku-.i 2gb4bt)r g/s0nwl Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitudkm4n2jtmsg.w -/0bq) b0prx(l igu 8de 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 poin*2npy+iw b babxw;.s9k7rs:c t 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 forcei.pkwwby;c9+n 7a:ss b2xr *b 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, 1+l:;lb) syzmz: x4fpuyd2smez: +jq 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnit2mdl ul z ms4s+ej:::yz 1xy)pzqb;f+ude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is ai +oa:35+hza4 mbf)w ppsp6v st (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What ispo3+swm v+ba fsi)4p:ph z6 a5 the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the ver.(n akqyf w1f:0nyi/ximh 7c/tices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electroknmiayyq0f x/n/w(: 7.hi1f c static force which acts on any one of the charges?

  Consider point charges+fpl: u4o/2 zvp/ *mmwr )hvyg of +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)2l uvw/hmv/f4 rpy :o* z+mgp place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origg 3-pfu kl+v7g;yi(,mtv- yfsd9a5 uwin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a thi w-ulia95 fg +ug-yvv3k7(, ympd;st frd charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placey gw1j p *gq-zm70g.ixd at x = 2a. Where can a third positive charge +q be placed. ixp17*w m-gzgq ygj0 so that the force on it is zero?

  A copper penny has a mass of tv:ch2 l2vxk76 g-6 yuucr4h c3.0 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 upsh9(s p p50uik against the force of gravity by the attraction of a fixed proton some distui(k pps5hs09 ance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducw 2:pn)mt od)1+bk riuting threads which are 30 cm long. Both are given identical charges, and the electrostatic repubikrt dun2:ow)+) p1 mlsion 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 electezg.mi(pa 5: zg0(8-p pvkxnm+cr 8tc ric field at a distance of 1.0 m from the nucle g8v8znmz(pr- : ac(+x5tppmk. gi0ecus?

  What are the magnitude and direction of the electric field a6tkay9n40 9ny w4jougxhc. f)t a distance of 1.50 m from a 50.0-nC ch .ujx9tfw)y 4cgn n90kha y46oarge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of t)z( raxj*ek i8o;0+pi j k4d 4/tcnhcmhe electric fielkohzmk x0dpi )+c4j84nt( ac j;r*/eid at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of th)r;wu y,b8h bze electr ywub8zh, ;)bric field?

  A 5.0-C charge is 10 m from a small test charge. Whap2bx u y9vu2m1t is the magnitude of the force experienced by a 1.0 nC charge plmu1bp x2 v2u9yaced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a di,0:fh4i7-t)gssiy s l sta:y jstance of 4.0 m. What is the:s ysl7 0h4g si-ys)jtf:ta i, electric field at a point midway between the two charges?

  A 5.0-mC charge is placed t6n +*1 ig):zwdjoiowat the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm m+o:i) 1i t* dgoj6wnwzark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is plaxfhgzn z,54z2 ced at 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 chargegzf4zhz 2xn5,s is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. i6agah4;z6 r.twfff, 7 z +mftWhat istr6.zfw ,7;t m6faazf4h + igf the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are a yfz0q)y2z5(.e)v5xz mh ikps t 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 e.x z)q0mvzkh5yyi psz)f2 (5square.

  Consider a square which is 1.0 m on a side. Charges are placed at tk(n1rabb y)h9he 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 at the square's center?1b(ak)r9 h ynb

  A force of 10 N acts on a charge of 5.0 mC wheob206jz(mqqn jtl1x -n it is placed in a uniform electric field. What is qnz bj lq(6to0jm2-x1 the magnitude of this electric field?

  A particle with a charge of 4.0 mC has0 /qadav( 6a7yngnrw7 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 ikufp;f: oi8q )c j(,ean electric field of 6000 N/C pointing downward. What charge must be placed on the ball foro; eu:) ck(i8i fpq,fj it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -6a x 6fogu 7kacl0ky)k,9 m0mv2.00 nC. The ball is placed inside a uniform electric field, and is suspended againstvao ,ug 6ky0kmk6c0afx9lm)7 the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 1d ;o;oqb 8n vd1)ictcj.uncxv :-+0rj 0 cm carries a charge of +2.0 mC. What is the magnitude of the electric fivncu c);xb-0+rc.8n jo: q1ojdidv ;t eld 5.0 cm from the sphere's surface?

  A metal sphere of radj;hkgyv05r/n ius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the cn/k05h g;jvy renter of the sphere?