State the law of conservation of electric chargj +yw5ai fqw 9t2 o siu9ba1/zj0/du*fe.

  Is it possible for two negative.1gac88okqhq charges to attract each other?

  Is it possible for a positive and a negative charge to attract eachbk ys : . 42 fz8;xkohv+ bocwdmqxx0n4ku,7w+ other?

  A glass rod is rubbed with a piece of silk. During the proce6h6d7avr7i nsbwtb(3i h92yw ss the glass rod acquires a positive charge and the s7t6hb dhi b9ni wsa6ywv7r3( 2ilk

  A proton carries a

  The model of the atom shows aj4t umw9.)z 8eshwkt, u-6zpl

  A neutral atom alwayd(c wy,j:8aa:3kngd ls has

  An atom has more electrons than protons. The atomqtr3bj:z: i,p is

  Materials in which the electrons are b .ya8vg*3bowe ound very tightly to the nuclei are referre3 bewyg avo.8*d to as

  Materials in which the electrons are bound very loosely to the nuclei 0fv4 n-1ffg ,r6zbj c zsy3br6and can move about freely with1bfzb46 0r,3vr jscz6n f- yfgin the material are referred to as

  A negatively charged rod is brougs xt6o.))shvcht near one end of an uncharged metal bar. The end of the metal b .sc) 6otv)hsxar farthest from the charged rod will be charged

  Sphere A carries a net positiveloidtwc 8).b 9 charge, and sphere B is neutral. They are placed near each other o .wdi9 lbo8)tcn an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivg.9i iq pebb* owx--x3 fea)z;ely?

  An originally neutral electroscope is briefly touchi3;cf-5frylvw (1 wvh6m0iff5vty b5ed with a positively charged glass rod. Thy l i- w5whvy5v(mtf ff vc1b6r3if0;5e electroscope

  An originally neutral electroscope is grounded briefly while a positivelyvfwbd ;vnf 8ra8 og67r,r1n(b charged glass r b(vn1,8ovrraf 7fn8 gbw dr6;od is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. dx+vbk543t xj84mpjzq w2- sj+md cq7 Then a negative object is brought near the electroscope, but does not touch it. What happens to the leavep4xt32d8m+qzxjm7 5vk-dj4s +qj bcws?

  A large negatively charged object is plj8 3ti whb 3o8fs8e:dnv:0libaced 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 obj hn3 fitw0b8 delvi::38s8object. What is the final charge on each ball?

  Charge is

  What are the units og agli03d+jr)+eibx02ul g d;om sv84f the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separlg4c:2vj 1zyb5 cve2 kated by a distance d. The first charge is larger in magnitude than t4bgclv cej25z y:12 kvhe second charge.

  Sphere A carries a net charge and sphere B is neutrhwzhqj;ch wgl6 573ir13 e9hsal. They are placed near each whhg7jhi1c 5lzqrw9 3 6s;e 3hother on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain fokvojp wt0,:c;vf/5i krce. If the charges on bot,citvf:w5 ;/0ko pv kjh objects are doubled with no change in separation, the force between them

  Two charges are separated by a distancl9mbnjz2fx ,gu x7-i8e d and exert mutual attractive forces of F on eac2g- m87i x9jbufl,znx h other. 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 happfr2n ty(6sy +pyun2 ds ,,uk7v8rn x(pens to the force between them if one charge is doubled, the other chargu+vx,ns6(ndr2 sp kp,n287 uyf(yyrte 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 sepcmssk7h7;. jyarated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the firss;7 sjy7ch.m kt electron?

  An electron and a proton are separated by a da 8 1fyci*6 t 4oijx4s- awz8bz1at0 8ix6myyxistance of 1.0 m. What happens to the magnitude of th-famxwx x 6t8 4i4btj czi*i0y1yz1 6o8as a8ye force on the 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. What happen-ud ovb); xsk r9z/k:js to the size of the force on the proton if the electron is moved 0.50 m clo;/d9-z)kbxvjo us:k r ser to the proton?

  A point charge of +Q is placed at the center of a square. W4s73 hj(gc utf,)gfvhbf8o 8 vhen a second point charge of -Q is plag(4f fjusf8 g)vh8t c3 v,h7obced 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 of the square?

  A point charge of +Q is placed at the centroid of an equi:qlnoh:wh37fj li 2n0lateral 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 thiwl: fqh720 nonh:3jilrd charge of +Q placed at one of the other vertices?

  Which of the following is not a vector)*. cq 6vcrd4k+3ch:qwbtn rm0 ess.c?

  At twice the distance from a point charge, the stre+c26u rahat g1ngth of the electric field

  Is it possible to have a zero elm+ztu 75jdd; /vhki0qectric field value between a negative and positive charge along the line joining the t/ q+t0dmih5vz;ku 7jdwo charges?

  Is it possible to have a zero electric field value between 4wfach) mfk+0 two positive charges along the line joining the4 fh0fcmwa)k+ two charges?

  Electric field lines2ozl: ra 63knt;t/ wnc near psitive point charges

  The electric field shoh:t u5 r::hxj 2mgqv3iwn

  Can electric field lines interni :*dh1p8 luc)e 7srisect in free space?

  A solid block of metal in electrostatic equilibrium is placed p26lfrh 9 ap:fzn(xw 9in a uniform electric field. Give a statement concerning the electric field in the block's96af hfn9rz pxw(2lp: interior.

  If a solid metal sphere and ar. im58 2yncml hollow metal sphere of equal diameters are each given the same charge, the ymr5cl nmi2.8 electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uni wg9,;l mxosu;form electric field is directed straight upward. What can be said concerning the c; lw m9,s;ugxoharge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an 8 -i -u/x,cm s8upw: tq)hhizyelectric charge

  A positive point charge is enclosed in a hod;lo6,vpk,tt 0 e 5ouullow metallic sphere that is grounded. As compared to the case without the hollow sphere, the eldu o e;v 0u,l6ktp5,otectric field at a point directly above the hollow sphere has

State three properties of conduc9 wd axnplvsl26)x126(z r( ajb1qzej mwf6d;tors in static equilibrium.

State Gauss's law.

  The charge carried byxi*r qq ,-z1t.j* qgrm one 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. Hiepxyfq s,,9s;j/ k3 pow many more protons than electro qyj 39s,kpx;,i/ep fsns does this piece of plastic have?

  What is the charge on 1 kg of prhv5 01ryxbc t.otons?

  An atomic nucleus has a char dagyb6(1,sy+( dqmwp ge 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 2.0axz ayzw.xe08+tgafmy ; f8z1:2d -p f and -4.0 mC, respectively. What is the 2;08wa1: azxxdztmfy fgfy +a.z-8e pmagnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them ish(o:a+f qfox - 1.0 N. What is the magnitude of thfhx (o: -f+aoqe second charge?

  Two 1.0-C charges have a force between them of 1.iis bn1j+b+(kbqk :sgl f v1n 46jj/k.0 N. How far apart are they?

  The force between a oj 9e+mr5ve ntsq2. :t$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 tra j9aka/mt5,bd2), ylf- v wcm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between /9wva, b ,dmljfr-k tt52ya )athem?

  Three identical point charges of 2.0 mC are placed on the x-axis //m+vtek blhjbq)c*wj .:c(a. 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 electrostatic force which acts qbm(b */e/ hj:tvwal.+ kc c)jon the charge at the origin?

  Three point charges are plac* ff h,zdv.us5ed 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 are the magnitude and direction of the electrostatic force which acts on the charge at ts,.ufz*d h f5vhe origin?

  Three point charges are located at the f fmbfmm8hv 2br 59l x05nddl4t 9*c.gwollowing positions: 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. Wha. x95 dtbvwrg0c 2h94fm*lbfmnm85 ldt is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placefos9w+/ +i/u 2y j swlv6 1a5vkdapxr2d 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 of9w 1 f2xaodk p6rj ly/s/a2 +vwvu+5is -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 67v9t gon*:w 1t iechxm); Q3 = 5.0 nC is at (0, 0)9:g * entxt6ivc7who1. What is the magnitude 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 at (0, 0.10 3h esf0x5jkkj s3k09 cm); Q3 = 5.0 nC is at9k 0jkjcxs se0533hfk (0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equig886gc lywal q lyh 35;/lsq h70op:ck6.not ylateral triangle which measures 30 cm on a side. What is t8clqlqypy.6sh/o5tc6 nh3 yk wl: l07;8ogaghe magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, wf+jggr.e 4+ llq )dhe 7x-ogb/ cac-hq:h5nl(hich 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 (he gcg:.hhe+bo ja 5-q xn4-gl/f7cd l+qr)lsuch that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C ch /asy)qdgy. +darge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is dg sdy.a)/q+y zero?

  Charge +2q is placed at the origin and charatj/ib. n4x0hu mq)w. ge -q is placed at x = 2a. Where can a third positive char xq0.b.n/4)twum hjaige +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of 4 usq npqv0y6peq:s95 tojdaw13a r:;s4vk(c$4.0 \times 10^{12} \; electrons$ 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 ot oup;u4nn/+wa+ g.dj f gravity by the attraction of a fixed proton some distance above it/4w+jg ta;+o.pudunn. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commovvpp +hxr1w n ,6:te5kn point by nonconducting threads which arev51+ep nvxpkhr:w,6 t 30 cm long. 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 a charge of +40e. What idlivpt34y8tz0 o ;y i l k1c/w-;7 exwvj0kt+rs the magnitude of the electric field at a distance ok 4ldwltk+0xor10-cezt3iy v ;wj/8yptv i ;7f 1.0 m from the nucleus?

  What are the magnitude and direction of the electrimxw-5ootc 8n3 c field at a distance of 1.50 m from a 50.0-nC cn83tx ow-5moc harge?

  A 5.0-C charge is 10 m from a small test charge. What is the magn:b 7dmkg-pf;w . ;2fbmyf xk1witude of the elect fw .7p;k b:gw-d;fm 2yx1mkfbric field at the location of the test charge?

  A 5.0-C charge is 10 m:q e( e,q5ltw snd)1rj from a small test charge. What is the direction of the electric ln1,wqqe:r5e s dtj ()field?

  A 5.0-C charge is 10 m from a small i+sz8 oienf -4test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locatnf-4oi e8is+ zion of the test charge?

  Two point charges each have a val 2jz;hq8dgw+tue of 3.0 C and are separated by a distance of 4.0 m. What is the electric fieldg j q8zh2;dwt+ at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cmhtvr 6qac(*:v r2 di;h mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electh c:qh*d(tv;r a6 2rivric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm markt tk)c 9 4:wlzs;mnn/j 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 electricsz:)t9/cw 4jk t;ln mn field zero?

  Two point charges of +3.g,8ls7 t pl/ 2+pfzvwyzlfjm/au82 bd;: : cjo0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the m p 2:f:owl;azfgyu+/l/cb tz 8 7,vlp8djs2j point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sidetwf f u6fi9 2wud21z3z 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the ce6z3uf 22 iwu19tff zdwnter of the square.

  Consider a square which is 1.0 m on aeqc2: thq.3 aea6g.ev 5alh3q side. 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 magnitude of the electric field at the square's centetvechq.lq e5q3g a .ea6 a3:2hr?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform electwipg) u/rl-d7ric field. What is the magnitude of this electric f7 -lw)ir/ugd pield?

  A particle with a charge of 4.0 mC has a my)v1ztm )/p: pl1py wwass 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 electrx3lr8a: f-mty crc)8m hztx85 ic field of 6000 N/C pointing downward. What chyflh a3 rx zccmx:)t8m885tr-arge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries av) +fpg* ei*ij(qm at, charge of -2.00 nC. The ball is placed inside a uniform el g(p ivf)mtjiq*+ e*a,ectric 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 of +2.0 mtd( )b/ytbx szp. t2/sC. What is the magnitude of the electric field 5.0 cm from the sphere's surszb/y(t )t t/ b.2xsdpface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What , km, p+fhk2 ys3pav5hj0kb(nis the electric field 6.0 cm from the center o 5km0 k3p+sk hyh2jvn,af,(pbf the sphere?