State the law of conservation of electrinc/(t3b ok fb/c charge.

  Is it possible for two negative charges to attracc 1d+6 44oh csuyvpie6t each other?

  Is it possible for a positive and a negative charge to attract ep 0;trsss0g7;b;zuq r3(xohp ach other?

  A glass rod is rubbed wicf ;f2g8hngsj9q*p+qo.v 8 nzth a piece of silk. During the process the glass rod acquires a positive charge.g8*cs q9f2pnhfnq+ j8;vg z o and the silk

  A proton carries a

  The model of the ato3 7ak ycm5f6kwm shows a

  A neutral atom alwayscso3di. bm9 eba 8a5x1w wwp78 has

  An atom has more electrons t 0suwc, s)fspa/t+uj 4han protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei aremxono-cvt;fb d2,p+-j nk0 :couh: /m referred tooucok :tmcf:m xbv 2/;j,on-h-n+0 dp as

  Materials in which the electrons are b 61 o )jx zi6e)6p ,jag)d4aihkocb2pgound very loosely to the nuclei and can move about freely with66a oo6 g2h)db4ij)p1axce jikzp,) gin the material are referred to as

  A negatively charged rod is brouhm ,qzyfnuk-y63)ns .0 4mk gxght near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod wih-0knufgq y4n 3m s,.ykz)6xmll be charged

  Sphere A carries a net positive charge, and rl6; cf rv9k0roc9;n0mq3 j;b idxc p;sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briedcqf 99n;b jk;rpx30ico ;0mlc v r6;rfly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope cm-e lvc(4f:fpositively?

  An originally neutral electroscope is briefly touched wh9 g4o9j soha 0fj)wz9 i0zsm ze*8b5bith a positively charged glass roomgj )h0asb5 8i 9woez4h9fszb*z90 j d. The electroscope

  An originally neutral electroscope is groundr)vh+aubbkwi19;5 po, dpf .red briefly while a positively charged glass rod is held near it. After .b5,v)u;dpkria+rh1opb w9f the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the vrrg g o(9j p r1i8ypvu5*j :zh.d 66jt4a2bzzleaves separate. Then a negative object :z.15(g*upadj8 rrrhyojtp i6 z z49vvj26 gbis brought 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 ntuj ;ciurx657hqx: y .-w) ulzf3tr9heutral 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 c9 .6)urtjyqx- :utzih735; r uhfwxlno time does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constatqv4im6(zc r6c 1 jhk3x(rl.vnt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger lkf.b oa 2d(yrp3qoh;v6+ xy9in magnitude than the syba+o3.vqdf y;6 9ropk(lhx2econd charge.

  Sphere A carries a net charge and sphere B is neutral.7hotsxkf;q8f07bn / u They are placed near each other on an insulated tab7hkotn7 /buxfsf ;q80 le. Which statement best describes the electrostatic force between them?

  Two charged objects attract ea9 iibpo 7//tqoem-vpu+:l jc7ch other with a certain force. If the charges on both objects are doubled with no change in separation, the force b-eiv jt: p7qc/lb/o u i7mp9o+etween them

  Two charges are separated by a distance d vvv ujkz,b, 8ly44gn0and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?8b 4kznuy4 , ,vv0lvgj

  Two charged objects a 6r:) pn1hblzf0fs oxb qj1h92ttract each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between 2lbb)prz q:oj6 xsn91fh1 0fh 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 ola7hkq t dog1f* ;i7y5f 1.0 m. What happens to the magnitude of the force on the proton if 1hlfkygo7*diq7 t 5;aa second electron is placed next to the first electron?

  An electron and a proton are separat:obst0 kaz:s+*d (m jaed by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next tad :tk: z 0+(saomjb*so the proton?

  An electron and a proton are separated by a distance of 1.0 m.pd zz8*4 o36i,ikk rk)johe m7 What happens to the size of the force on the proton if the electron is moved 0.50jkihzeo 8p*3 ozik 46m)7r dk, m closer to the proton?

  A point charge of +Q is placed at the center of a sqa ptcx;xhk1 or:* v*x;zq;jj3uare. 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 square. What is the magnitude of the nvaxc*j;1 3 x pq*rjxt o:;z;hket electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is kgde( - evs58kx 0hqa6placed 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 acts on it. What is the magnitude g-xvs(h56keqd0k 8 eaof 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 is not a vectl*3b-n p; +kl9qkttw lor?

  At twice the distance from a point charge :767u xb5ttjr gfqjl0, the strength of the electric field

  Is it possible to have a zero electric field value between a negativa 1a0x. +anjaue and positive charge along the line joining the two charges? a jx.a1a0+uan

  Is it possible to have a zero electric field value between two positive chargi *f. nhrcq(, idr.7at qy8hn-es along the *h qcyt(r .ii7hn-r8dnf.q,aline joining the two charges?

  Electric field lines near psitive point ch klerb.*tds5/(n eny6arges

  The electric field sh,9yio:jj+ha nw a260b kmd8pl own

  Can electric field lines intersect in free spiipur bynvv/ 6t0s+(;ace?

  A solid block of metal in electrostatic equilihd*ed*z . 2hlibrium is placed in a uniform electric field. Give a statement concerning the electric fiel2.zh* ilhd *edd in the block's interior.

  If a solid metal sphere and a hollow metqgr. 8*8xgw i+5rwj6 lvyj2nh 1uq:yyal sphere of equal diameters are each given the same charge, the electric +wlq j.h8 gvi6qygjr 5u1wrxy 8*n :2yfield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region /: ydlc,a.pwq 8/uvi+nc)f j gwhere a uniform electric field is directed strai,cd.)/a+ivj w:f nyqgpu/l 8c ght upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilbz2fbg pricy ):p):a *ibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that ixtutrkbf 19)f+t( yu8 s grounded. As compared to the case without the hollow sphere, the e +tktub19fu8r t fx(y)lectric field at a point directly above the hollow sphere has

State three properties of conductors in static equz,u7tom7l0p +s 8 .bw;ydk*x:k+ 1avxwcdyisilibrium.

State Gauss's law.

  The charge carried by one electxz 3m*7 yi2fvdron 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 max+e( ru 3t nkem7;j,y1eg5 przny more protons than electrons does this1+r(m;ergj5e , 3ezunt ypkx7 piece of plastic have?

  What is the charge on 1 kg of protons?hhuog02l 3i u9hjd2a )

  An atomic nucleus has ao6:+a5 xsh3 ak6bp6 ceqo,cem charge 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 2xu88qql y6pb /: ,ph(ts( ahmm.0 and -4.0 mC, respectively. What is the magnitude of the electric force p88/,t ysb h(m lauh (qxmq:p6between them?

  A 1.0-C charge is 15 m from a second charge, and the forcuhgu;8/ l/-j e 3xwkdxe between them is 1.0 N. What is the magnitude of the second cha/x3u/uwj-;kedhl gx 8rge?

  Two 1.0-C charges have a force between them of 1bn: o2qpcvgzdx 27wx-8 ; 66tr.o wogr.0 N. How far apart are they?

  The force between a ghqu,dwi6dxw, 3s f /,$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exib6ctori v77 6perience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between t 6trvo cii677bhem?

  Three identical point charges of 2.0 mC are placed on the 2k ps5i9ormrhjbc(6 5x-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 electr59hm5r rk 2jso6c bpi(ostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is plac 26ouei4u f(. ty7wkxmed 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 the charge at the origini (7 .o4ykwteu2mu f6x?

  Three point charges are located at the following positions: Q1 = 2.00 mCbcebn 6pga0 92k -xhf7ejo 1q- at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q30eqb cn72bfa6j e g9- hopkx1- = -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 placed at the center of a square, and a second+gnq1 e7v;erzgq, ev ; 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 thvnqeezqg,e ;g;r17v+ e 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 cq):nfj-y,.yw f6 ipj(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the nnpjj. cfq f,):i-6yywet 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); Q3 = 5.0 nC is v)+2 av.k tponat (0, 0). What is the direction of the net force on the 5.0 2 vt.+onkavp)nC charge?

  Three identical chargezkkj2a52:jse4p 6xb as of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charka2kz6xes:j4p2 bja5ges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what popy3l )w3zov vhrh .- 1otq:n*oint, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it o:33o) 1thhvoqpzv y*l w-n. rwould be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 40* zf5.d(vy:ymz1a(5 lfq e uyrc.wlu .0 m. Where on the x-axis can a third charge be placed s *fd. 5(c:zy5.lqyufa0vmr(z e y1uwlo the net force on it is zero?

  Charge +2q is placed at the origin and charnv vk o+c w9ni,-1lx7dge -q is placed at x = 2a. Where can a third positive charge +q be placed sk iwcv+1 od7ln9,xn-vo that the force on it is zero?

  A copper penny has a mass of5+/v mwrf( sdd 3.0 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 up against tdhn tnouo,50k )8pt t6he force of gravity by the attraction of a fixed proton some dis tu5)o8t0n d6 kpt,ohntance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductin nf6cua)5h h+gg threads which are 30 cm long. Both are given identical charges, and the el5c uh6g)a+ fhnectrostatic 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 magnitudeiupsz p1n*e az-ji9 9;9c ldf;2xq+ph of the electric field at a distance of 1d2*s a; p eq9pjuzx+p-;nh199zcfl ii.0 m from the nucleus?

  What are the magnitude and direction of the electr ph.13wi dvminv -dy(:ic field at a distance of 1.50 m from a 50.0-nC dvhpy-d1(nm3. :i iwv charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of k m50pvfd bl.l7d;e)w the electrikllv.w pde0;)d bm75fc field at the location of the test charge?

  A 5.0-C charge is 10 m from a small 1j5k l*tzrfq+*a)-ti cdyc4 l test charge. What is the direction of the eled rct ky i4 a-)5z**1ljcltf+qctric field?

  A 5.0-C charge is 10 m from 6ejy(ro*:pnhfth) czx2 nd0 9a small test charge. What is the magnitude of the force experin(9*djhnxyht o) z fp2e06:r cenced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a valu67k5h ) ozy9g-dsn) tt dh2 lx)m3qetge of 3.0 C and are separated by a distance of 4.0 m. What is the electric kdm5))y6edzoh7ggq sn t2)9t3-t xl hfield at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick an(wj tx*+n50 ga 0gdcbqa*sbr+vi72h x d a -4.0 mC charge is placed at (w*tj*rn5b2cq a++d7ag bhx gxi00sv the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the lnw 2vtohg6:kxu3:2bbnd9(t0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At u x9o2wl2b:nn3d( t :tgkbh 6vwhat 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 =q/na wc)vs0gs8 ))uoe 0 and x = 0.20 m. What is the magnitude of the electric field a oe0cs8uqa)w/) s)ngvt the point midway between them?

  Three 3.0 mC charges are at the three corners of ae1;eoeldd 28vt)1b y 7(3xbzh1eo fud square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. f 3)e b7ebd(edh1d8u; 2oyev 1zox1ltFind the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners vofj rw (rc2(16s fd6wu 1tz,cof 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 electric6jtd1 2(fscf,uw wrr( ov61cz field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it c+,pbk n b.;d ytro+x3is placed in a uniform electric field+3+.;o,ytx b rbpk dnc. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a ugzj61f quwmfw7t 86hbs9n -7lziw/2 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 elei1*c b-ryl5eh ctric field of 6000 N/C pointing downward. What ch-l *b5iyhcr1 earge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries0z /mr) ulrdt( a charge of -2.00 nC. The ball is placed inside a uniform eled)zt r(0lu/m rctric 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 carries a charge oulj*. e.zwgarw y :exin*c62j2 ;q-xwf +2.0 mC. What is the magnitude of the electric frn: z6qexj;*.elx2.icjgwa *ww- y 2uield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a ch 1j(ovb9,xs tgg e1ve/arge of 3.0 mC. What is the electric field 6.0 cm from the centegoj bt1g/ ,9(svev 1xer of the sphere?