State the law of conservation ofr7f h;h:d 7:rdbd8myw electric charge.

  Is it possible for two negative charges to attract each othlngm9ffc-6mxn6cuh j h4p06)er?

  Is it possible for a positive and a-+jik8 mt6 mji negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the projchennd68y 4qe5 45q xcess the glass rod acquires a positive charge and the silk546hq qexd8j5e4 ycnn

  A proton carries a

  The model of the atom show6 ,b f zhcwu1 53pa,l6ktkyt3ws a

  A neutral atom always ha1dnw95..atz o+ bmn7pph3h nsp sp4n 1s

  An atom has more electro/wk2hdzvuwzln (d0s: 5 omf(4 oj+q* xns than protons. The atom is

  Materials in which the elej osawknxd*c 0m (8(p1e d03gnctrons are bound very tightly to the nuclei are referred c0( d j xkpsd81mgw(e0ao3nn*to as

  Materials in which the electrons are bound very looszod3/e csgu 9 vq p0hur45p;/t-)cxssely to the nuclei and can move about freely within the material are referxhc 9zqgrsc/e5o) pus-u;ps /43dtv0 red to as

  A negatively charged rod is brought near one end of aduwjqk rsai .xd.: /;;n uncharged metal bar. The end of the metal bar farthest from the ch. ;.r;ixd/q uk d:wajsarged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plagf3tn 69 f,gvuced near each other on an insulated table. Sphere B is briefly touched wi ft63v9 gfnug,th a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chargwlu1c: zw u+ 14j/rszoe an electroscope positively?

  An originally neutral electroscope is briefly toyy pm yd /:jn0eqw *hcxcqqud0i265. /uched with a positively charged glass rn0dyc:60q .y/cu*pd/5j q2xhe wi qm yod. The electroscope

  An originally neutral electroscope is grounded briefly while a positivelyqm*;ws ) e*mx l/1cz-qq.kjyx charged glass rod is held near it. After the glass rod is removed, slj*;zy .c/1q *q xxkq)e -mwmthe electroscope

  A positive object touches a neutral electroscope, 5dlmwev c3pv7;c13afin qu-ej;b( 0v and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happ5wj l3 v-aqcfcuep;vidv3e n07 mb;1(ens to the leaves?

  A large negatively charged 1cx kl*d4ewoerd2up14 qy:7 zobject 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 obj1e*1 lqewd:ycx4rz k7opu2d4 ect. 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 the Coulomb cxol)p80j 5dh 1nk v)pyonstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a6h3rc5 kwwqiw u1 zupj -9c(6x distance d. The first charge is larger in magnitude th5(z u69uq pw3 ik-wc1wxr c6hjan the second charge.

  Sphere A carries a net charge and sphere B ism,rao y*esb:m/ *az shti.08c neutral. They are placed near each other on an insulated table. Which statement best descrim*. ba ca*ystioe:z8r/m0h ,sbes the electrostatic force between them?

  Two charged objects attractg p(h2b3 ( bj2tpncz7i74ewvj each other with a certain force. If the charges on both object(i jn 72t2pbcebh v4gjpw3(7zs are doubled with no change in separation, the force between them

  Two charges are separ /0vv f0;s0yj :cukgqlated by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mfk g :/lv; c0y0v0qujsutual forces?

  Two charged objects attract each other with a force F. What happens to the tfga4heur( ja:w0 w5 0force between them if one charge is doubled, the5(4t 0aufe0r a:wghw j other charge 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 m. What h6h4vm z+ *vbszappens to the magnitude of th64* vhbz+szvme force on the proton if a second electron is placed next to the first electron?

  An electron and a prot yf94h)rk4 gb vs49lxeon are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second e k4vgfb9hx )l4y4s9erlectron is placed next to the proton?

  An electron and a protsmri)q i)hcg+ vuunk*u3*f. d 4-d 1buon are separated by a distance of 1.0 m. What happens to the size of the force onbu)cug1 +nu* 3 *ir)k-i4m fqdsh uvd. the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q/0jnlixnb q+. 5e;gcju /ms 9g is placed 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 elecijx/m s0n+uben5g.gq; / jl9ctrostatic 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 of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangx/u1srt v4r x0le. 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 forc r10vt xr4x/sue 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 no 4q k7i drp4(y6p05xqgvjzl0l t a vector?

  At twice the distance from a point charge-l 3 ;6/kgqc 4z0kt9fd xcqjld, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and /nytur 3 r+xo8t4z1atpositive charge along the linzrrauot1 3+t nyt4x 8/e joining the two charges?

  Is it possible to have abqqh/3fuq,rkxi oe8 60sd8nslo6u .qu q41+a zero electric field value between two positive charges al8q1 +l3 qi08oruqods.46/ehn6qk xsb uqau,fong the line joining the two charges?

  Electric field lines near psitive point char*odi41j*bb :u 8rnv+u8ll nrnges

  The electric field s i6pw(cl: efkbe sp,c:/y x*b.hown

  Can electric field lineie3w; (x3za vz zngq/1s intersect in free space?

  A solid block of metal in electrostatic equilibri ttf7ad1 :+lf(tk1uq dum is placed in a uniform electric field. Give a statement ck+1 uda1 (f :qtft7dtloncerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sph*(sk+3 sxw.a(tag fhoere of equal diameters are each given the same charge, the xs*h+fks aw(a og(.3telectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woodlrpufahfoi eq 54ig+;e,9+ p)en table in a region where a uniform electric field is directed straight upward. What can bp)er +p l;o+hif,59a4uqi eg fe said concerning the charge on the block's top surface?

  If a conductor is in e*c , jtn0rpnz,lectrostatic equilibrium near an electric charge

  A positive point cha-5 awli5h:f2*p b*qu7iwhtv qrge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at wh*w iv7 bqh2qlu*a- tp5i5:fa point directly above the hollow sphere has

State three properties of conductors in static e *w57dz cqcr9n-+i9ln l) xerdquilibrium.

State Gauss's law.

  The charge carried by one 0a,dq *0zynn l*jn8ogelectron 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 mo jlbh*. k:p/qlre protons than electrons does this piece of plastic .lkjp*:bh/ l qhave?

  What is the charge on 1 kg of protons?*wd 6 ql4lvf-l

  An atomic nucleus has a chaukz,,0a: kj+f,vcvy + fmmml 0rge 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, hav:g3x3( svo4c:c7jrw)exqt eje charge values of 2.0 and -4.0 mC, rw7q ej3s43g )j:o:(cx rxtevc espectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and st tff2/lhq z j;,60xethe force between them is 1.0 N. h 6x;q /0 tj2zftfs,el What is the magnitude of the second charge?

  Two 1.0-C charges have a force between te5vt giv25e5 hhem of 1.0 N. How far apart are they?

  The force between a d,ov tn7 m)ik-$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, inirw e:tr7g w gn hpdav(6if4,12tially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force natgv2(7 wdi h6rg,r wpe:f41between them?

  Three identical point char,qml3q t op-+)vrh*. zyslc e0ges of 2.0 mC are placed on the x-axis. The first charge is at the z pr. +t)-qmlqsv* ,ol0h3eycorigin, 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 force which acts on the charge at the origin?

  Three point charges are d5x+ fm2wihu oj bxw635h,2fcplaced on the x-axis. 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 a5wj u wf5hdmh2xi+o, cx b632fre 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 = 2rd;-p;z6oq q)y6r/1kgeo mx r.00 mC at x = 1.00 m; Q2 = 3.00 m yogr;qxd-)/r6rm o1qz; pe6kC 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 placed at t8jabi5+y 7y8u 9ch4 nsypotg0he center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observe8+9 y48yjo g0 ys5hc7bitnuap d 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 of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is +y)vk,n-zh g;m3awskcdx :8q at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the nedzm8 3kq-;v,) :ksa nchgywx+t force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m7;1p*8pu- t hmpfg0o mxtde 5s, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directp 7m8pgem0fdop -;xs ut *ht51ion of the net force on the 5.0 nC charge?

  Three identical charges ocp3 ckkuus3h.8hz :6yp- c( azf 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 cha (pk8 uk6z3p3s-:uzcyhch. carges?

  Consider point charg 5e.,imsl heygt6b06c es of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possibl.ie650mtgysh l,ebc6e 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 a +9.0-C charge is at x = 4.0 m. Where onox /ilbe 1*ho2 sjc6k0 the x-axis can ao x2k/1ijeo*0shb6cl third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge y3 4 xumbotk cr.w637b-q is placed at x = 2a. Where can a third positive charge +q be placed so that the force onm37rxw k y.u3bt4o6 cb it is zero?

  A copper penny has a massbbwb8).1ejx(5j jemb-3ol* ixx3 qr q of 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 the force of gravity by the attractiong*+tfig 5j/em of a fixed proton some distance above it. How far above the elect +jigg e5/fm*tron is the proton?

  Two 0.20-g metal spheres g p1ql-*qc+y:ie1l/ugz ;aynare hung from a common point by nonconducting threads which are 30 cm long. /lyn+1i ugc;zpq-e: lga1qy* Both are given identical charges, and 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 a9tv,b0onwnsza/5 pvsmv36 8; ni ym u4 charge of +40e. What is the magnitude of the electric field at a distance of 1.t5zsn /n s,u 8mp9 i 4yo3va6vv;wm0nb0 m from the nucleus?

  What are the magnitude and 6 bsafl: h(9a+ng7 nh nh7k0scdirection of the electric field at a distance of 1.50 m from a 506bn nf7 k(lns ah0ash+ c79:gh.0-nC charge?

  A 5.0-C charge is 10 u2tf0 .2 e2kxh8:ccbqyl oe6r)4wiqw m from a small test charge. What is the magnitude of the electric field at the lo2c)lw2.wqioeer0k f bch 6t4uq28x y:cation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dk9pc:f j+fp;n 7xbh/w irection of the electric fifkbf:h ;w /x pj7ncp+9eld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thb1,)t.j mlte0gt v3lb e force experienced by a 1.0 nC charge placed at the locatiotb,.jet 10l3ml )v btgn of the test charge?

  Two point charges each have a value of 3.0 C and are separy9 uf)8go*vdthi ck:)ated by a distance of 4.0 m. 8vh:g)ftc i *udk )oy9 What 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 st)08 1i*9 qmojpfwlzo gick and a -4.0 mC charge is placed at the 50 cm mark. What is the electri)jqo90l*o f 1pm 8gzwic field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick anm5ct vq*7 ;ldl4ql q:g7zc3z rd a -4.0 mC charge is placed adql 54vtrl 7cg3m lzz;: q*7cqt 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 at x c8lp q+mz-n kgw22x d9= 0 and x = 0.20 m. What is the magnitude of the electric field at the point midw zmg l 8xdp9-nk+22wcqay between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. 01*b)ihc2uv z 8; miy-dilr gmThe last corner is occupied by a -3.0 mC charge. Find the electricmd* iic yhi m;rv21g8z-bul) 0 field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the gx0nrku/ alf,(5hh ksus b0)/corners of the square as fonhf0k (hrglus 0,bs/ku5a /x)llows: +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 of 5.0 mC whens.a .t8z*uh qq it is placed in a uniform electric field. What is the magnitude of this elecqu*z.8tas h .qtric field?

  A particle with a charge of 4.0 mC has a mass of go qsal:+iu8ce:.t97 kf r 6dv$5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed in a3o/hh y7 ,naj *;mqzro at8svdd4y8 1hn electric field of 6000 N/C pointing downwart/1 vj4asd7o;zr 8a oq3hyhm ny,h8d*d. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge ofcdosc 97.thx 5l 8kdlew1 t6b3 -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric f cs39l 5wehkbcxo6d7dt t18l.ield?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What ihdt bkmfpg;) benxgk *, 4h48;s the magnitude o4f ; gth;khb8mex)dk*pbng4,f the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3p5m 4 cfs4hl3t.0 mC. What is the electric field 4f s5tc3hml4p6.0 cm from the center of the sphere?