State the law of conserva4 );ppe/yi;e2om- n ,wxlzcc.xl2np( rfbfm)tion of electric charge.

  Is it possible for tws4a 08 evyov:;xqxzy:;r9v d bo negative charges to attract each other?

  Is it possible for a positive and a negative charge to atttbzbr8zbi,+*y9 o)c,m, i m ozract each other?

  A glass rod is rubbed with a piece of silk. During the process the glaqftk 73)hba9 qss rod acquires a positive charge andq) 7 a93fbtkhq the silk

  A proton carries a

  The model of the atom shoigg bvedc5as *n942 + cjx31z9sydz.wws a

  A neutral atom alwayt5ksg, lwmbi 8h 7f)1rih f v*+64pvxbs has

  An atom has more electrons than protons. The ato6hmcf .nidcg0grj) -aw9 7+wrm is

  Materials in which the electrons are bound very tightly to the nuclei are referrwmz36cjg 4 x0xe/lkph8); zooed)xl0o ;g3kcw z /epo8mzxh6j4 to as

  Materials in which the electrons are borkxs0 p7):bdc und very loosely to the nuclei and can move about freely within t)0dkr csbpx 7:he material are referred to as

  A negatively charged rod is broug 8(rn8stk ax2 dgvgw,1ht near one end of an uncharged metal bar. The end of the metal 8gwn2 t(, rdkg1sa8xv bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are placyidj .jgny m13 z1*f:fw1 ogh(ed near each other on an insulated table. Sphere B is briefly touched with a wire thatjd wf11y3 h.:f (gzg1nm*ji oy is grounded. Which statement is correct?

  How can a negatively charged rod carqy 7p/4 bpmgyc4aa vu4*a 87harge an electroscope positively?

  An originally neutral electroscope is briefly touched with a b+laq5msi z-(,8fcbn0y nk0v positively charged glass n80mq(- 5b+ vns ckbifl0,ya zrod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively/ bsybuk16 fbl2 z,t4/g9 yxba charged glass rod is held n46 y1ufb,/k bz2 tlb/9xya gsbear it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscnhpk9/mmwnedp,-ix x1 0 ))kqope, and the leaves separate. Then a negative o) p h,9eq0i)nk/m-mdxkx1w np bject 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. w8u b5vedemj;dtf k*;w8(m3j 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, btej we8;3v j fwk5u;8(d d*mmbut 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 gs 1k/hgl3:.ht-*acb itt5z(rz pj3a constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger i( l or*n,y7q- -+ggiksq bxc-kn magnitude than the second chargek+(o q c7x- rgg-lsy,i- nqbk*.

  Sphere A carries a net charycz0v+7ccm 1wa5chzi 04) fw jge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between them?y7v1 )a0ifwjc 5cwzm4h+ cc 0z

  Two charged objects attract each other with a certain force. Ik2ghld*p ; txg /eq)v2f the charges on both objects are doubled with no changek*d e pg)tlvq /2xh;2g in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive fc rl3)xz6)vm 2boq nc/orces of F on each other. If the charges are separated by a distance of d3)o )bzx6cm /l c2qvrn/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Whatn6 viv 9c82b(ixwy6qv happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original value? The forcexv6w vqv bnic6iy( 928 is now equal to

  An electron and a protonk 0 wwlb. /gfi5ufw/q3l3d)f q are separated 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 th 3./)5lifw gdq wulf3kqbf/w0 e first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hajrjodicnl q mh86eay+9 wc6/y7,xx 5/ ppens to the magnitude of the force on the first electron if a second electron is placed next to the protoej6orc5+qn9cwlyyi xd/8ah m, 67/ xjn?

  An electron and a proton are separated by a distance of 1.0 m. What happens to /7s p*- ujtfpx;r tr3aw 7rnd1the size of the force on the proton if the electron is moved 0.5adrxswu ;3*n-pr1tfprt 7j 7/0 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a f4b,:tl)rf7 /hu0g bioz qz6rsecond point charge of -Q is placed at one 6rthf) 0z: z7q,u4il/bogfr b 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 e+p/lakm*j)90i)e abmi b j3 guquilateral triangle. When a second charge of +Q is placed at oneb+ib m) jampi3 luja*)eg9/k0 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 not a6q abp6.x3zi 17za kibbh2x9j vector?

  At twice the distance from a point charge, the strength of the elecybii7( 5 fu cym+5iah3tric field

  Is it possible to have a zero electric field value b5xa ryml- m-n7m+1vz uetween a negative and positive charge along the lin -mu m y5l-1anrxz+mv7e joining the two charges?

  Is it possible to have a zero electric field value between two positive charges ;kmqke y);o7u; bcz5yalong the line joining the two chargcq;my5eu k)7yok ;; zbes?

  Electric field lines near vdu2w. iu lx55oc,h6 y/miz(npsitive point charges

  The electric field shown h 6 +hzclm/b/z

  Can electric field lines intersect injf-a8l* tc)gz free space?

  A solid block of met8o:.z6hrsn mi z2pk k+jmhq ;8al in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the blos 8qr :z pzh82kho;knmji+6m.ck's interior.

  If a solid metal sphere and a hollow metghn k;qzay +*22id vzm3a yv r*v4x.b)al sphere of equal diameters are each given th3yaz*n.)bv+; zkvqg4vm 2yx*d ri a 2he same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woodep6eg t1. vuhf8k/6ad tn table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top ktdv1ef6hp g 86 /ua.tsurface?

  If a conductor is in electrostatic equ iu 3a:,qu y4sxkaz(o5ilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grshqpo/j9s1g/sp p:mvy-; q 1wounded. As compared to the case without the hollow sphere, the electrivj/ 1/sgyqp ;:pp 1hsqowm-s9c field at a point directly above the hollow sphere has

State three properties of conductors1ycm7/m ln as5qg+k m3 in static equilibrium.

State Gauss's law.

  The charge carried by onep zbz;4en23,2pj gzmou e th,. 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. How many more prot(yc3vngl ;svev )(,rpons than electrons does this piece of plastic havn (c y,g(lv)se ;p3vrve?

  What is the charge on 1 kg of p.ud 3zu-y- irgrotons?

  An atomic nucleus has a charge 4xdv90finl1u 7 g,zuk of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.8; h:bkune:+gw kd.gi .a+rir5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnit .+r.i grwkd::eu a8bkh+ig;nude of the electric force between them?

  A 1.0-C charge is 15 m fromj9/:m:qst ayk8 ur o+q a second charge, and the force between them is 1.0 N. What is the magnitude okjm /:qotqsur a+y98:f the second charge?

  Two 1.0-C charges have a fo oyvr:p 64m4zmrce between them of 1.0 N. How far apart are they?

  The force between a on )tk:t39x o1lprfsq 3 *t-ldoc5ac0$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 goud+pbp3s 3p60 txcod1i*+x cm apart, experience a 1.0-N force. If they are moved to a new separat+ pou cbo3g6 pix3+s 1dtx0*dpion of 8.0 cm, what is the electric force between them?

  Three identical point charges oflhm yn;hl7eedg+:r 6) 2.0 mC are 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:hdrngl)7h;e 6elmy+ 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 +2.0 vt nkpv6h6t la5agei45)b f 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 ac6hifa 0 :5n gtv4k6ep a5)vlbtts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 macf( o n7ao7.z8;lujc) 0sdhxC 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 forc)lj 0nz8;a7chuas.(o oc7 dxfe on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second vb8ba t b2bt+1;rct4i6gxrm1 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 chbb gr 16v2am+ittb4x1tr8;b carge 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 is at (0, 0.10 m); Q3 = 5.0 ab78 j-s:oksbnC is at (0, 0). What is theb8o-as k7js b: 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 nC is fcd8lwudq d +5 ffp7gj5f4;rul;y n 91at (0, 0). What is the direction of the net force on the 5.0 nC chc ;4prf;5fwylqd5lg+17 jfuuf8 d nd9arge?

  Three identical charges of 3.0 mC are placed at the vertiqxt :ra7.,ms-)toa 9v .o phxwces of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charge.qpraxth)oa -:w.,vt xmo7 9ss?

  Consider point charges j8p 1d,hdh4bp of +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 on it woul 41dp jdbphh8,d be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Whe*z 42 pa-wmxsore on the x-axis can a third charga 4pz-ox2ws*m e be placed so the net force on it is zero?

  Charge +2q is placed at the origgh vef 40z 7g0n*lza*wjnl;:;kjmb i (in and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the fornh*vw0jjm(z 7kz;4 ebl ;gg i*a ln:0fce on it is zero?

  A copper penny has a zllki,30 ed+x t)j 1q0zp*nammass 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 against the force ofks*n51puh xnt +-p*qin p9;ng gravity by the attraction of a fixed proton some distance above it. How far above the electrn5;s*ntpi9pn1k n +h-*xq gupon is the proton?

  Two 0.20-g metal spheresa(qa* 5skuws xns*q-- are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces na-uaxq s (s5qw*-*ksthem 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 is the magnitude of the el y,(t4a*u7aedcqmf) mectric field at a distance of 1.0 m from the aqc*)y etfdm ,47a( munucleus?

  What are the magnitude tmm-8s mhvvj g)lh8/)o 2y6fg and direction of the electric field at a distance of 1.50 m from a 50.0-nC fth/)so g 8hm)68mjgmy-2lvv charge?

  A 5.0-C charge is 10 m frov5o(g -.bb . yubvkhs+m a small test charge. What is the magnitude of the elect5s-bk. ogbvyv ub .+h(ric field at 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 p;/jjpars) q; el;q/a;s rjj)pp ectric field?

  A 5.0-C charge is 10 mm0rcqrr u8amo9 va:31 from a small test charge. What is the magnitude of the fr3 rv8acmq ru9:0mo1aorce experienced 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 vf6ld ie*f:*e )tz,rx/th--fn2ox b jseparated by a distance of 4.0 m. What ixev-fft)2f,h*-djx/6:oe z *l nir tb s the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark hmz9r)t q6x):czd dg4*m9qsmof a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fie)z q mdsg* rmt)xmc4:h9q96zdld at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter s+99j:ctcowb2s fq o.thlccf+ c.8j11sz ;wu wtick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a lit9how;c :1wssco1+zw2l j+.bc f8c9.qfuj tcne joining the two charges is the electric field zero?

  Two point charges of..xuvk a1a :qx7bfu8m +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the 7f8bvmuq. x1a:x ka.umagnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 ke.7p cefbey,0kvay e (nd 2p93s9+qim. The last corner is occupied by a febnekvie 0ce29,.qk3p7a y(9s+dpy -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. Charges are u;fchduk z q6;4)j.bdplaced at the corners of the square as follows: +4.0 mC at (0, 0); +4.zukucd.;;) jhf64d qb0 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 uniform elec 4tbhduu9,fl 3yg0m-btric field. Whatfhbd b43t uu my0-l9,g is the magnitude of this electric field?

  A particle with a charge of 4.0 mC ;,oa q89,9kuihhd buiql. l zs*0,/drxgc )ma 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 placqad1s u*7h0k;bn4epf v8/k qced in an electric field of 6000 N/C pointing downward. What charge must be placed ocvd e*k/n 74pqhfaq 10bsku;8 n the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.05vx)7t0 hmfrzb5p y6u0 nC. The ball is placed inside a uniform electric field, and is suspended against the forcemb 0xh6y57 )zf5rputv 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 mC. jlqo ) zi7)ogt(/-cu d What is the magnitude of the electric field 5.0 cm from the sphere's surface7 dji/ )c)(qot gouzl-?

  A metal sphere of radius 2.0 cm carries a cha1eyreewx m wqtm1* l8m3c (5u;rge of 3.0 mC. What is the electric fiel31q;tm5(xe m uc8*1ery m ewwld 6.0 cm from the center of the sphere?