State the law of conservation o4a6up 7m dgti;pc;n 3my y0 elgx,uw6+f electric charge.

  Is it possible for two negative charg7s+wt0vi1f sfes to attract each other?

  Is it possible for a positive and a negative chargeaw-lg8w9us, -bz +plr to attract each other?

  A glass rod is rubbed with a piece of silk. During the proces7rzehv ptz;i*2z o07 vs the glass rod acquires a positive chazpt*2ez0vo 7h 7 vzri;rge and the silk

  A proton carries a

  The model of the atomgc ajaf5 9(h 3umqc/0f shows a

  A neutral atom always harc0g5 m2ng d(ds

  An atom has more electrons thjkj3(du g +z4v2t n2j4lss:2h2zpp ocan protons. The atom is

  Materials in which the electrons are bound very t :, tro0f pr:od+1mkbdtx,i f7ightly to the nuclei are referred tofbp7,f,: rx dmort0i +k: dto1 as

  Materials in which the electrons are bound very loosely to the nuclei and canq9ds() lc9mgw move about freely within the material ar(l cmdg9wq) s9e referred to as

  A negatively charged rod is brought near one end8 3-ppfhvdrhr5 qe22kio;6p a of an uncharged metal bar. The end of the metal-h2i6fd v2pokrah r8 ;peq3p 5 bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B ish,()kxat wr/ *gv0awm neutral. They are placed near each other on an insulated table. Sphere B is briefly touched wivwhxt0/wgk*r a,a m) (th a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscop e;*w/7jqm- ljd6cwide positively?

  An originally neutral any2j r w 1v9uc6. 2ualm9ufx9electroscope is briefly touched with a positively charged glass rod. The electroa6ncy2 w aruvfu.99l1m2u 9xj scope

  An originally neutral electroscope is grounded briefly while a posiroshhnojpj t)yilth +9a(7p70(f8; c tively charged glass roh9;psto(th+fanjrpo) l0 77y8 h ijc(d is held near it. After the glass rod is removed, the electroscope

  A positive object toucimid,rcgp51t8+ wy;g. ,ekvihes a neutral electroscope, and the leaves separate. Then a negative object w1vc p. mii5,8giteyk ;d,+rg is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged /3 tzusf3xpyxe30s7h object is placed on an insulated table. A neutral metallic ball rolls straight towarfs/ 7 h3u3 xpyxetsz30d 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 charge on each ball?

  Charge is

  What are the units of the Coulomb consj..mi.ziwwp(nvc 82) ir t5w xtant $k$, which appears in Coulomb's law?

  Two charged objects are separated by s(yol/5f s5*48(rq djtprraia distance d. The first charge is larger in magnitaj/s stiq l8r4(ro (5yprd5 f*ude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are;nc(v6q b5vfxg+qui 6 placed near each other on an insulated table. Which statement best describes the eleu n+q(6;v fg6xc b5vqictrostatic force between them?

  Two charged objects attract each other with a certm)f-z d zrm,f .ecx+c.ain force. If the charges on both objects are doubled with no change in df-.eccx r.,mz+)z fm separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces o6ij t--xb h/urf F on each other. If the charges are separated by a distance of d/3, what are the new mutual foruti/-xb 6rjh -ces?

  Two charged objects attract each other with a force F. Wl*tt8f8 n4iew/ (wiprhat happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between theiinl( 84itftw*re /p8 wr 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 h9*zn5)iprh26mu a zh. What happens to the magnitude of the force onh69zi z *ph5)arn2muh the proton if a second electron is placed next to the first electron?

  An electron and a proton aht w/k1w) 3vwhre separated by a distance of 1.0 m. What happens to the magnitude o ww3k/hthvw1 )f the 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 happens t z p a;6d.)q3ka0kgcmlo the size of the force on the proton if the electron is moved 0.50 m closer to the zl)3c6akdpq k0mga ;.proton?

  A point charge of +Q is placed at the cented)( r/pb ilk,rr 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 charlbrk/p,) (di rge 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 equilat c3 u8v8cu7lnkxu(p7 c:z1ykhqts 2f4eral 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 cq cx8:8 czpn hky lu7(ut24v3c1u7kfsharge of +Q placed at one of the other vertices?

  Which of the following is not a vectqmclsxg2yg eg*;++a 5or?

  At twice the distance from a point charge, the strengthghmb3a8wd e-ko2 ;pj/ of the electric field

  Is it possible to have a zero electric field :b(3-njj f 8y1hhnjit value between a negative and positive charge along the line joining the two ch -hi3( njtj8:ynhfb 1jarges?

  Is it possible to have a zero electric field value between two positi,7e0lxir 7 b;xlql.a qve charges alonaelb.7 ql lx 7;rxi,q0g the line joining the two charges?

  Electric field lines near psitive point ex(m -1avua t/charges

  The electric field sh2d/f7e4gjy.. qcmgr1 gf -a rlown

  Can electric field lines intersect in free spej3 qx x0+)1v tox1jh mz5-fvdace?

  A solid block of metal in electrostatic eq8g d*rqyxodccdb5g(9k:t6b )m1ybx *uilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block'bmry d:6bbox 8* cd gydcktxg*5)( 9q1s interior.

  If a solid metal sphere and a hollow f*p/yw 6aamf9metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and t /*ywfm9aa6pfhe surface is

  A cubic block of aluminum rests 0i cfet0 -mi lvm-(l j:dl8g5lon a wooden table in a region where a uniform electric field is directed straight upward. What can be s:50 elcjtv-m-0i gf ll8dli(maid concerning the charge on the block's top surface?

  If a conductor is in elhh:28d l0st nvectrostatic equilibrium near an electric charge

  A positive point charge is vd8d pq-3oqpd2 6t i0uenclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow spherepq8tod6 2 v0ud-d3iq p, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equw1.cxvzt q+1bilibrium.

State Gauss's law.

  The charge carried by one electr,nnklld4xh5c 1:w3n ron 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. Ho 9gp8kid;xj ggua 0mi158sh (ow many more protons than electrons does thk(jxo8u i; giam 18gh9dg5s0p is piece of plastic have?

  What is the charge on 1 kg of prd8ke.xh ++--e+ugy l 4 ngcihlotons?

  An atomic nucleus has a charge4p)2ee 4lgdgu zx6xy5 0((jcqedy i+d 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, haer;b7b/7sffqldp * 0 gve charge values of 2.0 and -4.0 mC, respectl;p qsf*dbbfg 770r/eively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second char*gx5 (goi u33ic5 gbv db8lw+rge, and the force between them is 1.0 N. Wh ( vi8 rd5 gixbobcg3l5wg*u3+at is the magnitude of the second charge?

  Two 1.0-C charges have a force between themfem48)gaf5 r, ds5gz y ww,9y :h)tvlu of 1.0 N. How far apart are they?

  The force between a t918s3z3l lnh w*g uju$30 \; mC$ 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 1.0-N force. Irk /bpu+fxepes2lgic59 /h+)x:qha . f they are moved to a new separ bhi+)plh r/gqpf+s x:e9xka/cu5.2eation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are plac-5q( 9jlbfh e k6wsoe7xj:wm :ed on the x-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 th::(h lx7s6b qk ej95-wejf omwe 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 p/)jyhwih. u5+2.0 mC is placed at the origin, -2.0 m C to the rwj)y.h5up/h iight 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: Q1 :qyug ;gs5ds kw-,:ch l;r0v q= 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 magnitude of the force on :k:y qdqgrw c 5,;vlu ;0hgs-sthe 3.00-mC charge?

  A point charge of +Q is placed at:g-k( izepu 4r.46jcsmeks d7c 3(u zv 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 t-kc 7sz( 4.vsp k ud4er zmi63c(ueg:jhe 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 i:d6n)ytd;c ss6pb8q e s at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is th6c s sd;)n :b8pdetqy6e 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 m); Q3 = 5.0 nCpoz5c,b8r9ywdqf 9c;c qi :/m is at (0, 0). Whatprzi9,dc5b:m c 8qyc;q 9f/ ow 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 equilateral j7.cdgn3 -xnmg*h8j.yea7e hw: qgd( triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of theeygw. cxndjg(ah mn8-7j*. :7gdh3 qe charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m.; 6(/ rjl( tozu4q uqqg+8o xrg(k2qwwnv78aw At what point, on a line between the two charges, would it be possible to place a qqr al (gvno(7w8ruqw;xzt6(uj+oqk42 8g/wcharge 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.jhv x6o,;4ayo Where on the x-axis can a third charge be placed so the net f j6oa4yohx,v;orce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x =fczkay;*/ -5lhrl lbcu4;+ l .yorvl(/a9wdg 2a. Where can a third positive charge +q be placed so that lr5 ak flzl(da ;c 9ylo*.hl;/-c+r g4v /buwythe force on it is zero?

  A copper penny has a mas+9a-*jmbmu fns 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 againllrw k d). zkntcd*) )t.50nayst the force of gravity by the attraction of a fixed proton some distance aboveaw.5kn n tdrt)d)kyl* l0zc .) it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting76m2, k buegdq threads which are 30 cm long. Both are g , kgueq6d7mb2iven 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 hasmd ni-329g 2uoesal9c a charge of +40e. What is the magnitude of the electric fieogn-uli3ma92 d 9c2seld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance ofavk(1/q o kh8m 1.50 m( 1ka/hm qokv8 from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thee540erfyy + hw electric field at w5yre 0f4eyh+ the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. i/,nccn22 u jkWhat is the direction of the e kn,ji 2cn2/culectric field?

  A 5.0-C charge is 10 m from a small test charge. What is 86-yjemz:+p/uw vaakyz3kd) the magnitude of the force experienced by a 1.0 nC charge placed at the location oye 6z)apvz j 8 /-:k3dak+uywmf the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance of lutsiwx:jgl3l4/- (y p /e8ck4.0 m. What is the elyg/p:s 8(lxt k 3ljuiwc4-e /lectric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meteds l56 p5:mvuucqj) +er stick and a -4.0 mC charge is placed at the 50 cm mark. What isv)c5mp:+le6 d sjuq5 u the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick ankfkiv .+ jcx85 zdcl-b,3u3 wnd 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 zerovx -3i38f u dklcc 5,z.+jnwkb?

  Two point charges of +3.0 mC and -7.0 mC afnx rgiik1h0 h )mb3;1re placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the p0i1bnxkfg hm3i ) rh;1oint midway between them?

  Three 3.0 mC charges are at the three corners of a square of sideg*e(.)28hjfdalz azq 0.50 m. The last corner e adgfl)2zh j(qa8 z*.is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which mz)cp*ha *by1is 1.0 m on a side. Charges are placed at the corners of the square as fola*c m1*yz)h pblows: +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 when it is placed inu*2is gc5io,x a uniform electric field. What is the magnixi sui 2c*og5,tude of this electric field?

  A particle with a charge of 4.0 mC has a mass o*pef-c v s2pl4f $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.19jtgg7yi)w15vskew (q e nx5 -20 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placwi7)-(j1eksx 9gg 5yntw 5veq ed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is so zrc 705z8whplaced inside a uniform electric field, and is suspended against the force of gravity. What are thezow58z0c s hr7 magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries ayi u3(ct kg8(s charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's suru(s(t3i 8gy ckface?

  A metal sphere of radius 2.0 cm ccp362d igbd)y arries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the s g idb3d2)c6pyphere?