State the law of conservation. *emcpwt-:z(u)3max/al m u zzryy1 lh,:bf0 of electric charge.

  Is it possible for two negative charges to f hl07 (glxa79i(zgkgattract each other?

  Is it possible for a positive and a negative charge to attract eachndajzd 5d1gd 4.:id3p other?

  A glass rod is rubbed withh (ig phhabv+rn4xq u9sc ez ;9,)zp9, a piece of silk. During the process the glass rod acquires a pos4 vbhp,a puc ,x+ rhs)gne(9zz9iqh;9itive charge and the silk

  A proton carries a

  The model of the atom showm g+ )9aleibf v6gib62s a

  A neutral atom always v)q ksbzjzo0.14r0gqoqk*9.mhm ,al has

  An atom has more electrons than protons. Thf, pnkwx j;r79e atom is

  Materials in which the electrons x i76m(erm6gc 9v ob2*(aj onoare bound very tightly to the nuclei are referred to as9 g*bvjr(mo6xnm62c oa( ei7o

  Materials in which the electrons are bound vexk5 8d3xbj/g 1hfk7w try loosely to the nuclei and can move about freely within the matek/b fx j7 dw53kh1gxt8rial are referred to as

  A negatively charged rod is broughx:+: vmw3yg1 xrl kd9mt near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod wil+ klr91d :my:mw xgxv3l be charged

  Sphere A carries a net positive charge, and sphere B is neutcq)vd8jey 7 u5ral. They are placed near each other on8 j57v)d eyuqc an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chargey-s2hls : nmy,r g,h+td rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chargedloaw)sk(k262u p.d eifmq y(- glass rod. of2is w-qd.k(( )lp6me y2kua The electroscope

  An originally neutral electroscope is grounded :g.np xw6 q0wf hhn21)/ubqpo briefly while a positively charged glass rod is held near it. After the glass rod is rnwpfpq20 ./6w)qx 1 uhg:onhbemoved, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. d4rcxb -;85t-s axo+g vxj)k jThen a negat8 x+-;oc4jad ) rtjgkb s-v5xxive object is 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. o4mym9zk/9 jdlru) n rqx 22;z A neutral metallic ball r9qzydj;zx2umkol )24nr/ 9 m 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 object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb ct+vz8 g-ba)pwx2 tm-98kol svonstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The(jvn;k gwyleyh. ;(nzbjc ++ g6h +4dx first charge is larger in magnitude than the+;cw4+j kvz g;(yj6yd+bhg e.n l n(xh second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near vg bg, ii4h3bou,mn/9each other on an insulated table. Which statement best describe,i b/iog,39vhugn mb 4s the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargefw*7 mw .1akuns on bo7 fkuanww m.*1th objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive fd a/q6 acm6+qm6wfxz 1orces of F on each other. If the charges are separated by a distance of d/3, what are the new mutua+mf6zc6/16aqxwmq da l forces?

  Two charged objects attract each other with a force F. What happens to the zj 4t(os7c qe /wt2ib8force between them if one charge is doubled, the other charge is tripled, and the sepa 2j4s /8tc (zwtqboi7eration distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton areyr:6x ua9 bo e55a3djc separated by a distance of 1.0 m. What happens to the magnitude of the force ond5ja6aeyco: 53 xb9ru 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. Wha us*tz7r opi8t x:)5krt happens to the magnitude of the u 8rx)tso*k:zt 7rip5force 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. lxbcz ;y9(9wqWhat happens to the size of the force on the proton if the electron is moved9wqy(;9 zlcxb 0.50 m closer to the proton?

  A point charge of +Q is placen bidkkj wx851kg/d8* d 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 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 ti/5w1k8 bd* xg8dnkj khe 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 tre )d :jn6.6t4tyqeem siangle. When a second charge of +Q eed mte 4 j)sq6t6n:.yis 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 charge of +Q placed at one of the other vertices?

  Which of the following is no eu +hxbtgq+x.c,fc 2vx9w8 g.t a vector?

  At twice the distance f.:/(8p0f jfhamr*wncazmu acw 6d*wbe0 ;ot3 rom a point charge, the strength of the electric field

  Is it possible to have a zero el (n/74 fxnupbni4.pyb ectric field value between a negative and positive charge along the linnn ux(.b /44 7pyibpnfe joining the two charges?

  Is it possible to have a zlzv- kwz0lh2z 8b7 telfrf18.ero electric field value between two positive charges along the line join w7be820 fz-. lhrvzzllk8t 1fing the two charges?

  Electric field lines near psitive poij8ikh,i)bj kvw )n d0 im )ao1jp+(qh)nt charges

  The electric field sh5uxpin8 /tcs-j4g 9ikown

  Can electric field lines intersect insfl xkw8 ,zc5, free space?

  A solid block of metal in electrostatic equilj ,rpl+5lezh wf6c:5aibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's inc r5 +a fpl:l6jzeh5w,terior.

  If a solid metal sphere and a hollow metal spgd5y jp:tp s e +/2bubj:3ri 1a)*sqihhere of equal diameters are each given the same charge, the electric field (E) mirsi::pj*uj sbaytdi q g5)2b+/e3p1 hdway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a :gl0mwwlu*/ hurge0iav 3( k:region where a uniform electric field is directed straight w gmr/0akl: 0:3h*glv( uiw euupward. What can be said concerning the charge on the block's top surface?

  If a conductor is in yk lumbho8 p93klh:-1 electrostatic equilibrium near an electric charge

  A positive point charge is ev /q+e mb+eqhzgt/tai :. k.y;nclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a pobg +ek y;t /av.hm:i.q tqz/+eint directly above the hollow sphere has

State three properties of conductors in static eqbm3;ca q1xn*qjfxub;l) 1yd + uilibrium.

State Gauss's law.

  The charge carried by one electron b9jvct7f :akjsj 7k.;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 +2cn.n ha: la x+2o,19 :gcjlgfte ks:3q.00 mC. How many more protons than electrons do:9a ggo1ch2 n:j 3. xnq:et+cf,k aslles this piece of plastic have?

  What is the charge on 1 kg of protonsnbne* pn,r+m)oz k5-x 71ia we?

  An atomic nucleus has a chargeqhjj+htt73i m z :t:mw:e7m /z 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 2.0 and -4.0 .wp 0 82vpo 2 0q-gf8upxszt*2w ehcpimC, respectively. What is the magnitude of the electric force betweecu2 ww8p 8-e.g2q*ipp0z 2sft0opxvh n them?

  A 1.0-C charge is 15 m from a second charge, andxy ::gm/ess (o the force between them is 1.0 N. What iys(o sm:/xe g:s the magnitude of the second charge?

  Two 1.0-C charges have a vo6v1 8p5 0+jg sst0;h 8fw v1gofh.sxrdcr/x force between them of 1.0 N. How far apart are they?

  The force between a ;, to*s) kinnw$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm ap /5qf vqxf87w+ shz)uem.t)pq art, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric smx+ffe/.t)p w vz8 u75qq)qhforce between them?

  Three identical point charges of 2.0 mC are placed on the x-aah.ihg++ zb z(xis. The first charge is ath.++(zgibh a z 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 on the charge at the origin?

  Three point charges are pl.s8 sgh 6cne0r:)jsh7ak 1 qqsaced 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 e6r7hnh0sk cqes1a)8 j:s gq s.lectrostatic force which acts on the charge at the origin?

  Three point charges are locatec9qtv+(wmb a:c r5a ps kc/r ( +u+0z1dp7dyhed at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = da(bs0 urphc19c(:+qzr/+a 7+ pt dcwyvm ke5-1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the1dla8 moxw8y15a u1t,,qk s:hlty4zj center of a square, and a second point charge of -Q is placed at the upper-lef u lyqtzl1ds 1,wjyk8t85o1 ,4amx:h at 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 -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.+,*sxt hm9xlv 30 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 the net force on the 5 l+s 9vmx,tx*h.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 i/7kx 97dslg vlv x8)zjs at g/klj8 7 xz 9v)dxlvs7(0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of;+skf1 ;lh ky5ha1fiud5 :oe hm//sl z 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. Wd;lu 5ksh lz;51:/ ihm+y /fefhs1 oakhat is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are seouny1 ) kps/7cparated 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 on it would be y)kn c/o1usp7zero?

  A +3.0-C charge is at the origin q7nw oo93 fr6aw 6+cugh6)xdwand a +9.0-C charge is at x = 4.0 m. Where on the x-axuhr 6+fo xww 9c63qon 6w)dg7ais can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the originj8n5i9jml1g0in fkm)b7 q,y c and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on itf)b c5mg l1j7nj q0i myik,9n8 is zero?

  A copper penny has a mass of 3.0 g. A total ofs3jax h f,gk+5qr d)6cx j*:zm*m(vkj ,s6ffv $4.0 \times 10^{12} \; electrons$ 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 yp)fhe;+alb61u g qz2-e, 7r nge,nonthe force of gravity by the attraction of a fixed,pnqfzg e2 ba,+ )rl-67y1n eogh n;ue proton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point . jgq 1dhuqkj00k tv13 c2yt6bby nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between t dthu jybqt21jq03 6.kcv1gk 0he threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. Wha+mk/ s4 7wdwvqt is the magnitude of the electric field at a distance o4qdm7 v+ks/ wwf 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at zp,-de ya l.8 zsmrr yja24(h3a distance of 1.50 m from a 50.0-nC3rl-zj 8re,a2p ymyda(z.h s 4 charge?

  A 5.0-C charge is 10 m fro0rc ..l*ot12jir zb m fe xdz+node+3 4u.o,enm a small test charge. What is the magnitude of the electric field u.de oize2rz ob+1f r,. n*xj3mnc0.e 4+tdolat the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the )/,iw w6prg;xndi xh5 electric fieiw,x )h ip;wxn5dg6r /ld?

  A 5.0-C charge is 10 m from a small teqmncs0 mg(/s rwqr d7 )v /49j+cc4dprst charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locatio7/vsgsq4) rcdcnjc 49 r/rm m+dq( 0pwn of the test charge?

  Two point charges each qu9 kswv *:46b*qase ,1cq qbdhave a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field ss1e69qd*,q:kq c4 vwubaq *bat a point midway between the two charges?

  A 5.0-mC charge is plaodf9 xj,*im*)t+6sa6 l auzt vced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the atva)u o66ifd,l9x* *m tzjs+50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at 8wazm 7g8e-vq(2u qwvthe 0 cm mark of a meter stick and a -4.0 mC charge is placmuq78gz8v( v- qw2aew ed at 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 e,2hod9qly6o (si)*f w7 sbs4r ss+ow= 0 and x = 0.20 m. What is the magnitude of the e* ,wles (f yws94oo7)sdssi rqh b26o+lectric field at the point midway between them?

  Three 3.0 mC charges are at the three core,npwg3 eoh; 2ners of a square of side 0.50 m. The last corner is occupied by a -3.0n;ehw2og,e 3p mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are pl jcp9a tqw h)q64ai 3+.24wovgvao;ioaced 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 th ca2+9v3 4i;) 6toaq i 4qhpjovawg.owe square's center?

  A force of 10 N acts on a cha (; wtgrru29lnrge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electricr2ug9;l rn(w t field?

  A particle with a chat08aur (-tqj1z e2n2n.su 1yybkn tw.rge of 4.0 mC has 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 6000 N/C qefk7rmsl5 4 g tfl154;ilou w8w fz4.pointing downward. What charge must be placed on tlrwklmz 1f5 8fgt744eoui .q4w 5; lsfhe ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The bakfqa rw -oap1jz9 k-03ll is placed inside a uniform electric field, and is suspended against the force of gravity. W- p-k a9jaw3of01z rqkhat are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. )(fsl+h jtynweo3v2( What is the magnitude ofs+yh n23f(jw)(t ve lo the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the vnm5/9 a i7p) bmy;iafelectric field 6.0 cm from the m 9/p ymv5)afiba;n7icenter of the sphere?