State the law of conservatioa(-mbh g3x*z fsbl,x8 uq-7 vsn of electric charge.

  Is it possible for two negative charges to attract each8r50/vac pmofcf 4(ef other?

  Is it possible for a positive and a negative charge to attract each za ;kfb e,g)-uother?

  A glass rod is rubbed with a piece of /swzgf r.5 l3msilk. During the process the glass rod acquirw5l/mfr.sg3 zes a positive charge and the silk

  A proton carries a

  The model of the atom shct(mah f*d a19 kcg3;iows a

  A neutral atom always hz(n6kav,qk) l as

  An atom has more electrons than protons. The atom 5lxqh8;4uf nmis

  Materials in which the electrons are bound very hb*6xnw(5xnt*.w z rjr b2wx9tightly to the nuclei are referrerb9j.wx *n n*h xx5z2tw( bwr6d to as

  Materials in which the electrons are boun(fc6ije7g ( hsm4z,ki d very loosely to the nuclei and can move about freely withi6( ,h7ej(gfkzi4sc imn the material are referred to as

  A negatively charged rod is brought neartchsm 8pk85byf16-k o one end of an uncharged metal bar. The end of the metal bar farthest from thep c-8sb 1kt85 hoyk6mf charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They ar z-4nxg)jq1nl 7m7z y*;1x xkfmyf w6re placed near each other on an insulated table. Sphere B is briefly t jf* 1y7xgmzk-q 4r6zxmxw 1)fn ly7n;ouched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod char;jer ,7b(yzu4.wsql )m zpk+b(5x fzro2tl,f ge an electroscope positively?

  An originally neutral electroscope is briefly touched with a p924 a*fqdv6wlk,t tv l)nx-xt) h vyretzw31,ositively charged glass rod. The e,nw vr94e *1lzv,kttdxw)h2-ftx6t alqy 3)v lectroscope

  An originally neutral evv.z bncwm 7uv12/0tclectroscope is grounded briefly while a positively charged glass rod is held near it. vm/cv2uv0tnw zcb.71 After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscoozordor-z(p5 2wa;8kt *d( snpe, and the leaves separate. Then a negative object is brought near the electroscope o d nkrs8rdt52((;w*paozz -o, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insu13z o2jl* v-sar na,oilated 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 object. What is the f-o*nli3ars jz1v 2,a oinal charge on each ball?

  Charge is

  What are the units ofxtrio;qw0 p+3 the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects arel icpj,sk37p* zg0 mc r,36ikw separated by a distance d. The first charge is larger in magnitude than thewzs0,pm7i l* k36 pg3 ickc,jr second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near ea8 8f5ktp2bvxg3*gb hk.-bnfgch other on an insulated table. Which statement best describes the electrostn- g f2 g8p.v3fgk 8htb5b*kxbatic force between them?

  Two charged objects attract each other with a certain force.7dvxgu4m t/ 0d If the charges on both objects are doubled with no change in separation, the force between them4/gu0 t7dxdmv

  Two charges are separated by a distance d and e j/h/fenx+2i: 5qclg9f9kkb n xert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are hk /i:x9fgn +kf /9elc5qb jn2the new mutual forces?

  Two charged objects attract each other with ajn bogla h839sz 0xfju8+8e-l da8o.s force F. What happens to the force between them if one charge is doubled, the other chaez8hf8 ab sjn9u8o3.xl +jsd0 aol-8grge 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 happens., wfgwra23 *ud 6qxel to the magnitude of the force on the proton if a sl 2,gfx wwd*ruq.a63 eecond electron is placed next to the first electron?

  An electron and a proton are separated by a distance ofjwodm0j kn2 ;iac/4/0w4he ug 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next toga ie;0h2/kmojjw4w0 4c /d un the proton?

  An electron and a proton are separated by a distance of 1.0 m. What uc*m;/ an2x njhappens to the size of the force on the proton if the electron is moved 0.50 m closer to the proton?u;jca*/ nxn2m

  A point charge of +Q is pleoh2 rqx*:c :naced 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 plac:h:*q eorx n2ced 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 triangle. dh.k6mz od9u wq-.z1aWhen a second charge of +Q is placed at one of the triangle's verticesz kwm19q 6.ddh-ua. zo, 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 not a vec a1lnbzpw 5f vj61d(bb0ml18h tor?

  At twice the distance from a point charge2,k0w;r+ eoj fgmy ilki:1em9 , the strength of the electric field

  Is it possible to have a zero electric field valuei6 l44g1qfbwr vbt :8a between a negative and positive charge along the line joibbfv4a61tlr4: gwi8q ning the two charges?

  Is it possible to have a zero ele;(5gsag tj8i3ksny,h ctric field value between two positive charges along the line joi,;5j(hgs ani ysk38gtning the two charges?

  Electric field lines near psitive point chargv-.owi 9ae 5srbfu9(cpxnn- 0 es

  The electric field s xa: e)0wuwgw9hown

  Can electric field lines inters )j-yw5sjrxf l vp0s1.ect in free space?

  A solid block of metal in electrostatic equilibri,:k9vgrfk:cxx s d-c. um is placed in a uniform electric field. Give a statement concerning the electric field in the dk:9 x,v .rscxkfg:c- block's interior.

  If a solid metal sphere and a hollow metal sphere of equac 5t v;0f+oau kssta-;l diameters are each given the same charge, the electric field (E) midway between the center andkc ut-o 05+ at;safsv; the surface is

  A cubic block of aluminum rests on a lhwgyd,l8 ng6.rcj tj9mb ;(;eac8t )wooden table in a region where a uniform electric field is directed straight upward. t9 dc 6cgbjyw;tj,) 8nga llem;( r.h8What can be said concerning the charge on the block's top surface?

  If a conductor is in electrf6 v if1qt5x7x1 kuk+jostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grojhbwk 15i-*6h w 1goko e+5ioo3:or ipunded. As compared to the case wwibh-kow g:6oreii pk j1o o+o*53h 15ithout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stati-n/sl,. mu9n o2;qy ek0kbzcyc equilibrium.

State Gauss's law.

  The charge carried by one e++dm;h5 gtdlvb,th+y lectron 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 more protons tjst /+or-wk: 8qvjp6 *v hqna2wns d13han electrons does this piece of plastic 2n3 * j/p+t-vwdjn o1v6rhsqqaw: s 8khave?

  What is the charge on 1 kg of prot h226ow g+tvrsons?

  An atomic nucleus has a charge oe+hx4et a/.r yf $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, seecowu j*77g w /wyyi2o/z24teparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude og4oj7cue2*iww 7ozyywt/2 e/f the electric force between them?

  A 1.0-C charge is 15 m from a09 i.-hd mkcld second charge, and the force between them is 1.0 N. What is the i 9-md k.hl0dcmagnitude of the second charge?

  Two 1.0-C charges have a force578 9mos cumx1zg-e krbii* x, between them of 1.0 N. How far apart are they?

  The force between a gbn1ed78hx o0.ch, h b$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initialxim.l sc o510mv w6lm4tp6pb8ly 2.0 cm apart, experience a 1.0-N force. If they are lpb5 4 t vc 1p0lxs6mo.6mwmi8moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC arg4qm26 r9tiyz e placed 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 t6zry9 4gim 2qforce which acts on the charge at the origin?

  Three point charges arec7i3dmzzv:x-hwpzm /8k;wml hwt a4 n-: 5/jq placed 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 /5mzkmwlz: 8wcm -wqzda xp/3;:h- tjn vh47 ithe electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positioelz/cp.; d/vzni- i w(ns: 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. What is the magnitude of the force on /lei.znc zvpi d (w/-;the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, an+16n7, lcrs*1bnz xmod yj7flx9s s7id 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 ,j6*cnrx7s i1 l7md 1ylo7xnzsbf+9sthe 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 lltq+ rs/o,/fc(iq u) ah6 8;-eja h6mxuppy* = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). p6iq*em l/ho)( -fujacx,yt r lq68p+;/suahWhat 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 m);l c kuled2;v63lz6 4te Q3 = 5.0 nC is at (0, 4vkl2u6l;3 ztd eec6 l0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charge22s1 e*aa1 oz5gm y2ag4hwj les of 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 wh 2 mo1syagaze22ja 5w ge*l14hich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At)7wcxep 8 f+6bxpx)gl what point, on a line between the two chargp)xfc l7ge+px8xb)w6 es, would it be possible 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;ni:i* (cnuj z x = 4.0 m. Where on the x-axis can a third charge be place* c:ninjiu (;zd so the net force on it is zero?

  Charge +2q is placed at the oric-s3. ecf+ pxdrl,+nfrsf 5z8gin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed sf5-3fd r8+ np.sezf rx+slcc, o that the force on it is zero?

  A copper penny has a mass of 3.0o, +,() jueh*afs w 5qixzk1mk 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 they3teu81 qsx0j+ d5cje force of gravity by the attraction of a fixed proton some distance above it. How far abovu 3c8y js+1d50ejxeqt e the electron is the proton?

  Two 0.20-g metal spheres are hung from :qvb:k n 0xvrblr/q;7a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic qk 0n:7qvlvr; b:/rbxrepulsion 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 +40 +jr klrn4yi895 gd1zre. What is the magnitude of the electric field at a distance of 1.0 m from the nun1z rgirjyr598k +ld4cleus?

  What are the magnitude and direction of the electric fie p 7gooa)+pc*.l,yu+,- v:rkq cbcbmz ld at a distance of 1.50 m from a 50.0-nC cha,occ- +v:, +kupol )7zr. bmgqcapy*brge?

  A 5.0-C charge is 10 m l0bzg r3xjp7 m2+f;nr from a small test charge. What is the magnitude of the electric field at the location of th+xp rj rl2bf z7mg;3n0e test charge?

  A 5.0-C charge is 10 m from a small test charge. What is tnyn lij8/(tr0l* -r slhe direction of the electricn*(8 i/j lr tl-lnr0sy field?

  A 5.0-C charge is 10 m from a small test chu7 awc m ghs7.hhx*hw,rt;n) r9grh62 o,xth)arge. What is the magnitude of the force experihr hntw.o,gwm ;hrhar tu)h2gxs),* c67 xh79enced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance vdzoyr1-v /d7of 4.0 m. What is the el-/v 1rd7y dozvectric field at a point midway between the two charges?

  A 5.0-mC charge is plavi3 )*hocn +yfm/ p;jdced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. dyf3pmv*/ic;n+o) jh What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the y:jx-6gmr95q-vs+ev6cxk vg 0 cm mark of a meter stick and a -4.0 mC charge is placed at vx k9gmxy-65 : vej6gcvr s-q+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 mCzktmk*rff unacj.i (v,7,3l + and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the elek,u(n a fif.3vr*t7kmzjc+l, ctric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side*mv4sqta4si p ivfp54b/ ,r0z 0.50 m. The last cornv/p045v im itfqbapz* 4r,4ss er is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square whjv xwhm+(*4s pich is 1.0 m on a side. Charges are placed at the corners of the square as follows: +4.j(w+ hmp*4vs x0 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 in a unifor y/mn 52f+q-q y3cstvnm electric ficm /s- nq+ftyq 52y3vneld. What is the magnitude of this electric field?

  A particle with a charge of- .zxtyxbpi )slf2 q;2 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 60000 k 5xkcs23vci N/C pointing downward. What charge must be placed on the ball for it t s0i ck5x2c3vko be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The bkep(f3 krhds:v) :/c1 4c4w o8hfj lbkall is placed inside a uniform electric field, and is suspended against the force of gravity. What ar hfc4c bk:(4 f/:ejrlpk1w vs)od38 khe the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Whatcl)u9 er.sjh5i7f5 s+odgs m + is the magnitude of +m +cj)g rshs7es955ilfo u .dthe electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a chal:w(fq n a/ht+6yy/*)xgb tdrap6u+trge of 3.0 mC. What is the electric field 6.0 cm from the center 6bt:tqdwa+(x uh/+p* r /)ly fygn6taof the sphere?