State the law of conservation of electric t(g)2 j mqvz6bp pwo uf)+zz0cp6wk 4(charge.

  Is it possible for two negative chargevk7,za9j; ml6 9 yniens to attract each other?

  Is it possible for a positive and a negative charge to attract each othe4kaada q+ ed/6bz:i.jr?

  A glass rod is rubbed with a pie* c:w ;m8rthxcy z0-fix1ym+jce of silk. During the process the glass rod acquires a positive charge anmfwci0jy r8+*;h:zmxy-xct 1 d the silk

  A proton carries a

  The model of the atom sh;ag. mth nu46dows a

  A neutral atom alwaysy d-8tyvlwli;/,i + jx has

  An atom has more electrons than protons. Thearae-ha j2q- +b m-z29x6g ymg atom is

  Materials in which the electrons are bound veo7q fa,gnoq xf .*im;yzr qx2;u6d5q+ry tightly to the nuclei are referred fouqnod 2*q m,i+56.;x; yg7qq zfrxato as

  Materials in which the electrons are bound very loosely to the nuclei and c6(m3:tphtr6sz0rqmld 9 kd3wan move about freely within the material are referred tot30p6sm6hw (d3mt z :qdlkr9r as

  A negatively charged robf3 2smrt ysv*c s12.od is brought near one end of an uncharged metal bar. The end of ths2s1 cmst 2r3vyb*of.e metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge9cq.(b-le dkv cxi* f5, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched witkb*5c cdl. fq(v- xi9eh a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electr9rpxh.ug /66gijg3*;:c slmsip.dl voscope positively?

  An originally neutraltzyjjp jpd;,v6n5:i1xoh )j9e 0 nmc6 electroscope is briefly touched with a positively charged glass rod. The x 6 jj;h :cvjp0de nzy,onp16)95m jtielectroscope

  An originally neutrauany84 xux0o0lnhjq) 7 9xo y3wcm u;3l electroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed,0j9qu)3uc m7 y x8h;4loynwxxn 0aou3 the electroscope

  A positive object touches a neutral electroscoyo3xu: wve42 dpr; )jzpe, and the leaves separate. Then a negative object is brought near the electr :p2wuo3z)dj;xyvr4e oscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated 4;q/. v e5gz +htbqkwdtable. A neutral metallic ball rolls straight toward the objebv;4qqd z t5/ wh+ge.kct, 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 cons 6ptd/l6w6xz;zo 0r1bkow b9k tant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge isln- f:nld qijmq .otb0u2,rz j(a-8e- larger in magnitude th uo2nl--ta.nlqbi:( j drm0 jqzf8e-,an the second charge.

  Sphere A carries a net chaj whzgw -njqkx2-na c--7 5qe18z1rpy rge and sphere B is neutral. They are placed near each other on an insulated table. Which statej x- --cz8a w-yzqr 17g51nnp hjqkw2ement best describes the electrostatic force between them?

  Two charged objects atbcxh68 6kbh f)tract each other with a certain force. If the charges on both objects are doubled with no change in separation, the f6b h)8xb6hkcforce between them

  Two charges are separated by a distance d and exert mutual attractiv sv*zpi3 400mb w3gwl ret6a.ee forces of F on each other. If the chargst ew0liz03mwb6 34 ea r*.vgpes are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with ah*lop, twom cdf*.e*h +x .ve( force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is .w(ohch*f o .e+*vtmxp,*de lreduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a dis4a0u vd pkbwb/.ly.1y tance of 1.0 m. What happens to the magnitude of the force on the /yaldwbybuv .p014.kproton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 b+zu 9 opui6e9eg8ae/ m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the proa 9eo u/igpb8+u 69eezton?

  An electron and a proton are separated by a distance of 1.0 m. What happensv nz+ ,ol.3c,dno2ebq to the size of the fon n,,d.32bl+eczoo qvrce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the: zeb +b3mkd0t center of a square. When a second point charge of dbme0:kt z 3b+-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 of the square?

  A point charge of +Q is placed at the centroid of e2pjj-1om gc6an equilateral triangle. When a second charge of +Q is placed at one of the trpomegjj 6 12c-iangle'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 followiml;eemip210 f2wxs 9 dng is not a vector?

  At twice the distance v p4nlsg9ju+ ,k:y6jy from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negalyy*:m:cv/s gif,t1; qagqf( qk yg2.tive and positive charge along the line joining the two charg ,yq*ylfi21m/kga.: qg; (stf :qcgv yes?

  Is it possible to have a4 b1pv mf)/chb)zw6qc zero electric field value between two positive charges along the line jmcb1hwb6) pv4zq) /fcoining the two charges?

  Electric field lines near poj)m+j,-ujho4tw c 8ksitive point charges

  The electric field showace(;26;7fjdrj byrn n

  Can electric field lines intevjhu* 2f 0fq66hycgu6 nl8c2oc:,i ktrsect in free space?

  A solid block of metal in electrostatic e.pg6jt*1w vj sboi68o mk ;kpauf /l7)quilibrium is placed in a uniform electric fk66uso w gpbov1k);t*7j ila jmp/8 .field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are ek/3hlu i.*h ne 27tovm6e vxt+ach given the same charge, the electric field (E) midway between the center and the 3u/ vth6 m+7etxh2in*k v.ole surface is

  A cubic block of aluminum rests on ur06:u;s(tmy b x(9vr g78ox hxsgf8 ea wooden table in a region where a uniform electric field is directed straight u8g mty ge0r;(xu xso9 7s6rxub:f (h8vpward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium neg qegat ;d gt3 7i; 0gjn9bql0nlt1pz4y: 2rj2ar an electric charge

  A positive point charge is enclosed in a hollob;t1d;xn (dkxu5e ; cyw metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field c1bx;y(d5;n xt u ;kedat a point directly above the hollow sphere has

State three properties of conductors in static equisgaixnia5 r .-wr124elibrium.

State Gauss's law.

  The charge carried by onenf n(rgi/vf4k 98y*zt 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. Hc,:pr2lh pjq/hgq u 85ow many more protons than electrons does this piece of plasc8jlp/h g,5r uph q2:qtic have?

  What is the charge on 1 kg of)wnyly4) .b cf)ugi.yzzv/ a . protons?

  An atomic nucleus has a chargey7,g trne:dv-z t5mhw,u;:)4 au2e e* lxhwfm 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.,8iq-bt+ynkr.( g jam6)ls2 np8vxyh0 and -4.0 mC, resm-inv)nbtyqg lj+skpa82r 8xh y .6,(pectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is ra9qpj:cbju (2 v*o9 gg;afr.1.0 N. What is the:9rjg9u.*r 2c p;j(o bqaagv f magnitude of the second charge?

  Two 1.0-C charges have :,gq77f3luhcbm4ctg:vhc+7iqp . pla force between them of 1.0 N. How far apart are they?

  The force between a 2 s6+kwya,a24 xbde+ zevr7qe$30 \; mC$ 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. If tu 7t yllbabp0 zflcuoo5:*495hey are moved to a new sepoa:55ll4 ul z u7b0t*o cbyp9faration of 8.0 cm, what is the electric force between them?

  Three identical point charges of -gc-d9l :9+mdjx rs4j4 rfze o2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the rightm4-lr4 jof+cd gz:s9 e-x rd9j 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 placed on the x-axis. A charge of +2.0 mC is plt(lbhoemm h0sp z:cl/bwt194 o(.u u *aced 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 d blb(mo tu4l01oste/.zc9hmp: (w h*u irection of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x = z tfnkp4f;5n gmc8kk)s 0)(ra 1.00 m; Q2 = 3.00kc psng a5(4n)r8 kmz;tfk)f0 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 charge?

  A point charge of +Q is placed at thortpqw fv, 7j(e0 (b,pe center of a square, and a second point charge of -Q is placed at(b,f rw07jo vppe(t,q 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 -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); Qxuh:k k zh 8(+u2ox28* kunwnf3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charf u:*kkonkw2hxu(u8n z 2 8+xhge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at igl;q g9br: e;2dx2rk(0, 0.10 m); Q3 = 5.0 nC is at (0;rik2ggl d e 92brq:;x, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of :dpgt-r1lj:o ) l/vqg3.0 mC are placed at the vertices of an equilateral triangle which measurgltlr:dq g-: /v j)op1es 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which aregpus-rfdv;tu +;83p 1 a k..wxy ja8wj 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 gr ;fy8+.ks1d .uaxp3wu 8;wvja j- tpit would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is86 yaq3;oiao*z5h rr i at x = 4.0 m. Where on the x-axis can a third charge be placeda oq5i*yoi6 rrza; 8h3 so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wherefk)pd/ d s168n gy:t:dp cp,vq can a third positive charge +q be placed so that the force on it is z 1:n vg pq/fp:tk8d yc)psd6d,ero?

  A copper penny has a mass of md .3zssv*gdx8g j/c03.0 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 3 xlz; ea,ob8s udzl+l+d0b ;xup against the force of gravity by the attraction of a fixed proton some distance above it. How far above 0do,l+uzz8;+a dx;3bbs elxl the electron is the proton?

  Two 0.20-g metal spheres are hung from a 3fvla- r5zd 5ocommon point by nonconducting threads which are 30 53l-rfdz 5oav cm long. Both are given 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 has a charge of +40e. What is the magnitm5. -qi abmyu4ude of the electric field at a dista4 uib-ma5ym.q nce of 1.0 m from the nucleus?

  What are the magnitude and direction of the electricct* 44p7 r/zomvxz9 pu field at a distance of 1.50 m from a 50 9vux74pt*zcmp z /ro4.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is thushs 07l zq28 fq66/wklscn9u p+fs2me magnitude of the elec2wm0q ks966ff +c7uu2n qlph8/ssz lstric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directionozqvc,3 *ibt+ n:cw +u of the elect+bvnw* c uq+oz:i3c,tric field?

  A 5.0-C charge is 10 m fromzx zge-8sw2yi8c7o 9vq 7adlek g ,5/p a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of thl7dzx/8 2 wp8iz9eokg a,ycseg 7 5v-qe test charge?

  Two point charges each have a value of 3.0ehm5e )snl9kp)m3d u(p kp/ *z C and are separated by a distance of 4.0 m. What e) znludmspm35*p ) p(/kke9 his the electric field at a 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 mC b2qt y;it )q0slxb(1pcharge is ;qbt2qs l 0()xt yb1ipplaced at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a un-7avu afe43 -4.0 mC charge is placed a vaue-73nu4fat 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 placez szk; tkocm.t.w668 sd at x = 0 and x = 0.20 m. What is the magnitude of the electric field at tkk8zc;.mst. szt6o 6w he point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 ms - a4//lu(.bn3hx hvl svc/p2yt8qwe. The last corner is occupied by a -3.0 mC charge. Find the electric field at ehpyxs s-.vthull/8a4 cn(/bv wq 3/2the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners ooc ; gx r/3 ),1j4ge*-wupzm/tqritnk f the square as follows: +4.0 /roz4jw )it pgcq/eu1-grtxn; km,*3 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 uw1y2d4qg jclk: + gn-gniform electric field. Wk1 -wylgdcng:2+g q4 jhat is the magnitude of this electric field?

  A particle with a charge olo3t3,6bztw/ n vvn+ci5 xdz /f 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 elecyhn 2:7d6 m ak zb3.jz0hkt0oxtric field of 6000 N/C pointing downward. What charge must be placedzb :6kh02 a07zjt.3yhmkd nxo on the ball for it to be suspended?

  A foam ball of mass 0.150 g 9 w-cffp0)4o0pvbm ah carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. 9 40m0bh-cffopw)vp aWhat are the magnitude and direction of the electric field?

  A metal sphere of radz9 /4 tc/3hc h,aovpxsius 10 cm carries a charge of +2.0 mC. What is the magnitude of tazh/ opsc9cxv,h 3 4/the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.e+w6+ oobb1r4f qjw*t0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the centerwo +*w b+1f 6rtqj4obe of the sphere?