State the law of conservation syb)l* )bv0x,mmgpp vy 1k9/tof electric charge.

  Is it possible for two negative charges 6ey eu2+dk5y m/ wgq7oto attract each other?

  Is it possible for a positive and a negative charge to attract eachndslxmsmy(ss7 - :19v other?

  A glass rod is rubbed with a piece of silk. During the process the glassbyhqjk pt9 8tpbas3 n41v44-e rod acquires a positive charge and the 814tysephtq4nv-b4j3 9b ak psilk

  A proton carries a

  The model of the atom3kdu4.o tw b)x shows a

  A neutral atom alwaysxv;b kbr0r*i2 has

  An atom has more electrons than protons. The atoa 1zsd xr*p6v+5s;pdvm is

  Materials in which the electrons are boundb*a(bosrt 0 0hr6 :koq very tightly to the nuclei are referred to t6b or*: aboh sqkr(00as

  Materials in which the electrons are bound veryxbp;4/r ii1xswoz- *p loosely to the nuclei and can move about freely within the m1*wi/i psx;or-pzxb4 aterial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar.jp6 v( 4n/ onkhf51rnl The end of the metal barljh r65pn( von /41knf farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere 7f(6 rbpof*mdx h 2bq1B is neutral. They are placed near each other on an insulated table. r1xpdmf2 6fb7qbh (o*Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged ro8c+8zldpap r9d charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chargedwl;p dxau;4q - glass rod. The elea ;; -lwuqpdx4ctroscope

  An originally neutral electroscope is grounded briefly while a positively cha606jaw.y v znhnf h96qrged glass rod is held near it. After the glass rod is removed, 9a0ny6jnvq6 hhw .zf6 the electroscope

  A positive object touches a neuy tbx k+b- 5o:lw;tf1dtral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the lebo:y5+1f t -dklx;t wbaves?

  A large negatively cha alsq- q0wpoloc 8d4pc;y1 1(lrged object 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 bp oaqw -yq(poll8; ldc1c01 s4all 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 4xbpz ci ghr,/ib ,j38the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance o+(tvb a qn*b5d. The first charge is larger in magnit vq(abotbn+*5ude than the second charge.

  Sphere A carries a net charge and spherjy (ff/+og,wer6 9lpaclk j, 5e B is neutral. They are placed near each other on an insulated table. Which statemen9g6(w oj +akre l,ff5/lpjy,ct best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges o1hgv 741q,1 dfmqrjc on both objects are doubled with no change in separationc f1qmo rv1j 1g,hqd47, the force between them

  Two charges are separated by a diswo4/)5tmu*l don:fn dtance 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 no*d)l tw5u:o fd4mnn/ew mutual forces?

  Two charged objects attract each other with a force F. What happo3me kw9-cm*b146 vtxt3 s deiens to the force between them if one charge is doubled, the other charge is tripled, and the separation distanc 3dk*s-t6bv m e9134iomxcwete 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.9yo6 des :q/vt What happens to the magnitude of the force on eyto:d/ qs9v6 the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens tof f4bulx9ci5jy8k f;3x7py2un/ u1i e the magnitude of the force on the first electron if a second electron is placed nextj8uc ibi 9 yf351yfk fxe;/puxu27ln 4 to the proton?

  An electron and a proton are separated by a distance of 1.0 mkw8 ckmpsyje1 5uhs n75/e1 -c. What happens to the size of the force on the pr-cm ksshc17eknj55u1y8w/ep oton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Whenz k t,+ rydps+se :8iunfvj,n 5y:0z1j 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 net electrostatic force acting on the positive charge at the center ofnz5kdvs+ ut+p e,sj yf:i0zr8ny j1,: the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. 9pu7 tx7rg :)ra: yblj 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 toj tbla r)7y:up9grx:7 a third charge of +Q placed at one of the other vertices?

  Which of the following is not /b1q 8m5r4o kv4dv)tvtrmt +g*5e mkd a vector?

  At twice the distance ha obhgo53 s-o3m;m v7from a point charge, the strength of the electric field

  Is it possible to have a zerosko(0zaj*edf7;u f (b electric field value between a negative and positive charge along the line joining the two chargj7du0kffas; o(*ez (bes?

  Is it possible to have a zero electric field value between two positive chargesbf3ag9 y; nqtdza93yu7/bk,(tjw w3j along the line joining the two chgbf7 /39buyt(a qywadt,j nz; 3jk3w9arges?

  Electric field lines near psitive point ch(klbux;mzat: s*;q k.arges

  The electric field shown 9g onofc806sajc-r/ l

  Can electric field lines intersect in free space?fhcuzsf ;pbq(nuvlq +9 /a)*7

  A solid block of metal in electrostatic equilibrium is placed in a unifo hkavl*jk5i,xrj m404vg w49hrm electric field. Give a statement concerning the eaiv94xkrkl j5j hvm4h*g0 , 4wlectric field in the block's interior.

  If a solid metal sphere and d /2dqwp4a p;u:dx9g.iq *piba hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the s4qpd.b *di;2u/q:dag9ppwx i urface is

  A cubic block of aluminum rests on a wooden table in a region where a unya4qh5iglxa3bprzao2106 8 j iform electric field is directed straigli 05qbgp2aj318roz4ax a hy6ht upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriskic: m2nl7c jp8/( toum near an electric charge

  A positive point charge i6k7yd w9-gu0r gjlyt. s enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, theu gy7tkd gy6l.9r-wj0 electric field at a point directly above the hollow sphere has

State three properties of conductors in static eqh-+-k gi 5wyxm1rrbi 4uilibrium.

State Gauss's law.

  The charge carried by one electron nim4gu6qf:o: 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 mw3i0lz-rekp g0slx+8 any more protons than elect8ps0 0 3iew- r+klgzlxrons does this piece of plastic have?

  What is the charge on 1 kg of pra dfkij- );z27fa.i.3b yp lxxotons?

  An atomic nucleus has a charge o7(vdov m/6nh xcd6 :vef $+40e$. 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 am:wjjlv6h6:2k w tc z1c( j.pof 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betwelcm(wjwh : z2 ck.a16v tjj6:pen them?

  A 1.0-C charge is 15 m from a ix 7sy:a z198ng hxn8s*+b sqyxail+*second charge, and the force between them is 1.0 N. What is the magnitude of +7*s1xshag+inyyx9zq lnx *ibs a88:the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How. 0kwma upy;iv n2n)h)pfka2hi9n w06 far apart are they?

  The force between a . wcc sti 925pvqhf)flfe;3)e $30 \; mC$ 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 fo oo +a*f)v0to.iyg )o x35izteh6 bg0krce. If they are moved to a new separation of 8.0 cm, what is the ele 6i*t 0i oeozo+3 tg )0yagv5)k.bhxofctric force between them?

  Three identical point charges of 2.0 mC are placebn j*5 i4sm1ded 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 the magnitude and direction of the electrostatic 5nde*ij 4sb 1mforce which acts on the charge at the origin?

  Three point charges are dy79c,o f sev28vzy,:s-qat 7*nfzejplaced 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. v ta y9,y7*efeoc,qv2zj 8 :n-dszfs7What 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 9z hd7qj l4uqc8t.*grgm n2b- = 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 the 3.00-mC c-ctn lr7d q jg.bq9m2zg*84huharge?

  A point charge of +Q is placed at the center of a square, and a second point c3,j r(zg*p4 zyx9pdwfharge 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 of -ppjd wfrxy 94z3*,(gz Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.370+a qa- wpuri0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of 7-a u a0wqpi+rthe 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.uuku7ws7:e )*i*k vmy 0 nC is at (0, 0). What is the direction of the net m *u:isev wu77yk k*)uforce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral jr bo+ aw(o 2c68ekq6jtriangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the 6kqo coajb2+w6(j8ercharges?

  Consider point charges vss kse 9;4lo.cu/*hrof +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 place a charge of -Q such that the electrostatic force acting 9ocs.h;k4e svs/*u rlon it would be zero?

  A +3.0-C charge is at o6ba4azisrjqb r9*t v*q9o*7 hp6i /jthe origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placedj7tsa*b49 i*/6jbz* v hp o q9qar6roi so the net force on it is zero?

  Charge +2q is placed at the origin and chark:c(5 koy-z)z plvh+h ge -q is placed at x = 2a. Where can a third posi5plh oczh(zv k)+-yk:tive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. f pre (v0r+g5 ko5gr(gtgc9r 0)j5rbrA 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 attn ) btbn1hkz j7+/m1nnraction of a fixed proton some distance above it. How far above the /nnbnhbtk17z+) jm1n electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductinxum .la8 j6y7vk wj2+2o: w rk/gmfm)dg threads which are 30 cm long. Both are given identical charges, and the electrostat+7. gu6malw:kx2r dm/omy8k w )jvj2fic 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. Wm a r/ :3ha(qx-a2rlohhat is the magnitude of the electric field at a distance of 1.0 m from the nucr /oma (rh2ah aq:l-x3leus?

  What are the magnitude and direction of the electric field at a distance of 1w( 1kaae n l*wy*fiytiab,9q9; k,0uc.50 m from a 50.awkck n b lw1,q*a0*,iye9fi tay( ;u90-nC charge?

  A 5.0-C charge is 10 m fbrvrs7ck )2br9u 9. j0sn+o js4g wna(rom a small test charge. What is the magnitude of the electric field at theg rb .s9jn70r2 kb 9)w4+nsarvusjco( location of the test charge?

  A 5.0-C charge is 10 m from a sm(/j8uj/pu,pb/e pc;b u2gxgwall test charge. What is the direction of the electric fig/jb2/u(e/pb 8g;p,c u u wxjpeld?

  A 5.0-C charge is 10 m from a small twd9bp; 5jxlpmpy6 ,fvn u:zyg4h8ag(q0y 7 t:est charge. What is the magnitude of the force experienced by a 1.0,jd 8mn0phxypbqg;4y7 (69vw:g zuat l:pf 5y nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are sepan*0dhe;0v(s l* au0wi6pazz*ljwt eiy(gy.+rated by a distance of 4.0 m. What is the electric field at a+gd lt0l(0eu.i vaz ynp zeh6w*w0s;iy*(*aj point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 m5y a eghzpasy3.5b(h sr/z6 5pC charge is placed at the 50 cm mark. What is the y5(sa5 /yeshzarb.z65 pph3gelectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charge/prmb,v dd :ui.al ;+u is placed at the 50 cm mark. At whai /; dbrd.l, +:upuamvt 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 = 0 and /nlxgiw5,8r+n gi e7giw;w6 fx = 0.20 m. What is the magnitudew56;,i7fg rw+iwggl/i8e xn n of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of5m(hd 0uv6 noe a square of side 0.50 m. The last corner is occuvuhm0e nd(5o 6pied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. l 1 i08fkt:jvcCharges are placed at the corners of the square as follows: +4 itlj0c81:kvf.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 chargembn6kl1 k4v 9f of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric 1 flmv49kbk6n field?

  A particle with a charge of 4.0 mC )q2vd;fh3w1p nt3 bkfhas 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 an electric field of 6000n o (xop l;dd-*o3cw2g N/C pointing downward. What charge m(dl-3* pcw dgoo2xon;ust be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carrie t66x*o l9zspis a charge of -2.00 nC. The ball is placed insii6os6p9t zx*l de a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radiuh 2z t5v2x x*xs bx0x9vl7i9a e31mkzws 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's sur1wzbk* 3s90 9xhi2 ex2vmzx txxavl7 5face?

  A metal sphere of radius 2.0 cm 4k x3 v1b/d8yo-yldgwcarries a charge of 3.0 mC. What is the electric field 6.0 cm from the cenvy -gl 4dwbky31d ox/8ter of the sphere?