State the law of conservatq tj 9 duf*9xmwv63jd1w 2hn6eion of electric charge.

  Is it possible for two negative charges to nw7 i.:dfe;j m-br-yg attract each other?

  Is it possible for a positdt9l ,biazk9:h z/1zjd/olx:ive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod ackhw8byc 2gj70;ni(l oquires a positive charge aclw0o78k 2hjy(i b;g nnd the silk

  A proton carries a

  The model of the atom showuc (h4 ).rrggm :nqq;ks a

  A neutral atom alwaysdpba)cf2;pgf 5 mo19jds; ib0 has

  An atom has more electrons than protons. The atov0*w6t 9qc8emegl f 3dm is

  Materials in which tfjt;dae f7gy b55k+7jhe electrons are bound very tightly to the nuclei are referrb ;fg yjk+jafd7 5et57ed to as

  Materials in which the electrons are bound very lzze3f uw5 wk)3oosely to the nuclei and can move about fre3f53wkzwzeu )ely within the material are referred to as

  A negatively charged rod is brought near oftqmtx n6j)u;xl z25-ne end of an uncharged metal bar. The end of the metal bar farthest frof;x5 mlj2q-t tzn) x6um the charged rod will be charged

  Sphere A carries a net positive charge, and sphera;iaz hcq4 ,j.e B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. W a;,.chj 4ziaqhich statement is correct?

  How can a negatively charged rod charge an electroq6rq(lt0ur q2xe(fa - scope positively?

  An originally neutral electroscope a /7-xlznib u*is briefly touched with a positively charged glass rod. anuib-l */z 7xThe electroscope

  An originally neutral electroscope is grounded briefly whiley22ap n a9 oebhtq784c a positively charged glass rod is held near it. Ao apnqbh28t4 92acy7 efter the glass rod is removed, the electroscope

  A positive object touches a n vkrnc gwbq bn+8*;6ml4dhs60eutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Whbm46h+c n gk6ld;rw8 n0q*vbs at happens to the leaves?

  A large negatively charged object is placed on rgq/ fjv*t ,1x*c-gy w(q. yyg7icah(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 ball rolls forward, but does not touch the negative object. At no time does either ball touch y qf (iarvcy*t /c .jg(-q,gh1ygx7w *the negative object. What is the final charge on each ball?

  Charge is

  What are the units of u 4flt 4c(yk12owk;bz6 wgsh9 the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first c a7+tzkyff1.x t1 c.nvharge is larger in magnitude than the second charge nfytt 1xcaz..7+vfk1 .

  Sphere A carries a net charge and sphere B isv8 v8qrb.r y n/v/*sbc neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force /b.r/ c 8rsybvv8q *vnbetween them?

  Two charged objects attract each other with a certain force. If trs8 akrn6 7w3ohe charges on both objects are doubled with no cks6 nro87arw3 hange in separation, the force between them

  Two charges are separated by/p3lhzxf1tc l26r 3wr a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what arep2/h3 6tl1wrrz3clfx the new mutual forces?

  Two charged objects attract eac5/ rkf ,lmo-tyt7zz xkh,rz9) h other with a force F. What happens to the force between them if one charge is doubled, the other charge is trixm- ,toz tzzhkk, 9lr/ 5rf7y)pled, 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 ;w iw( .iqp :z6ia0 *ipckek)lof 1.0 m. What happens to the magnitude of the force on the proton if a seconaliwp.(i :zwqki*p ;i ek0c6 )d electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.773dr:zwmr 42xbp pov0 m. What happens to the magnitude of the force on the first electron if a second electron is placed n7:2dpv 4z wop73mxrrbext to the proton?

  An electron and a proton are separated by a *4,jxroe)apq distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the proton?ae oxpq,j r)*4

  A point charge of +Q is placed at the center of a square. When awcoyi/ 92-u rju 6eeg0fm.p.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 corne ap -jui 6e .gur0w2.fmo9c/yers 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.n8jj5z+. +n i 6kahj2ihafm;e When a second charge of +Q is placed at one oj. +n k5himjz 8h+n2fej6aai;f 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 followingqrkm ) m)ra)+pho6; k1qyk /nka)c40vksj: il is not a vector?

  At twice the distance from a point charge, the strength ofe 0c0 rjbpp1v1 the electric field

  Is it possible to have a zero electric ;hb-o( rhloejau0f1q-/ b3 pz field value between a negative and positive charge along tq/-( uz 0 p-hhoe;b3bfr1alj ohe line joining the two charges?

  Is it possible to have a zero electric fieln2 3d:x +d+ig pvdqru)d value between two positive charges alongg+dx3qvd+) r p2i:dun the line joining the two charges?

  Electric field lines near mj(;moc; 2bk kpsitive point charges

  The electric field shown6ajux;2 )cboz ,qg;5lk n ua0j

  Can electric field lines intersect in free s6x.v4ih :jhxea)w6n s pace?

  A solid block of metal in electrostatic equilibrium is placed in a uniform e 43+okuq;inse /ci dba b*d1n1:dri5t lectric field. Give adiu/r i5 inoea q n;b3dct d*ks141b:+ statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters arerrdsv/ z;(l8f7duvcr3tz7g+ k+ r t +q each given the same charge, the electric field (E) midw qsgdttf rl+c( 3zd8vr+ z;ku+77/vrray between the center and the surface is

  A cubic block of aluminum rests on a wooden table 6yr3ac+e qooml)02ra in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surface? +2 maqale0)6or 3yorc

  If a conductor is in electrostatic equilibrium near an electric chdni3j.qko 3d* arge

  A positive point charge is enclosed in a hollow metallic s ;sgd;8idxjtpdy v)) 2phere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hod;ds)td2igvpx;j y8) llow sphere has

State three properties of conductors in static equilibrium 8n r:+exx7t6;.dvdgvj ripju+6-p vd.

State Gauss's law.

  The charge carried by one electron is 1.x,duyj 8thgd00e mq$e = -1.6 \times 10^{-19} \; C$. 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 +c02q7di vji 2.9sg vnu:ikwy many more protons than electrons does thkjg:72 vqs2+i ivn9wy0u .icdis piece of plastic have?

  What is the charge on 1 kg of pro,.ytu5yd 0j*om8 krnxtons?

  An atomic nucleus has 9u4,vto d5ymz*t u+kra charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, s h+do5:*n n+smsmj4lpz 9s qa3eparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betw:9aqlp4+3sm+ jndm *s n5 hzsoeen them?

  A 1.0-C charge is 15 m f5:hczmn / lc 9tg-x.ffrom a second charge, and the force between them is 1.0 N.- .ftnxhgc9fmc /5 z:l What is the magnitude of the second charge?

  Two 1.0-C charges have a force betw-ohqh a cg(/p,gti9 oqw3q*s7een them of 1.0 N. How far apart are they?

  The force between a k 6;) *nbmdlz7q, agrr$30 \; mC$ 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 they a7dgia/df zy5.m90ep z re moved to a new separation of 8.0 cdf pe/ zy0g azd79i5.mm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cha4dw8dk yuut oxn9e +w/ n/v9h 3rjt04mrge is at the origin, the second to the right at x = 50 cm, and the third is at 43uw/+9o8 jnvutn 0rh/9dmykdx ewt4 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 otgje )o z ccj),8r4vka:q:.csn the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = ,vjqcsakc:eorg t j84z)c.: ) 50 cm, and +4.0 mC 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 located at the following pvanq+j9 25p(uxp hg6 wositions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x 9 upw5n(apj2h6v+ xgq = 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 the center of a square, and a second pointv r 22*gu6 do0f)rxejz 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 jredf*vxo2g0 uz )6r2 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 nCi0om;mf, nn 2w is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nCno,wi f0nm2 m; charge?

  Q1 = 6.0 nC is at (0.30 m, 0) 7k8g15qb2t md1uxob n; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 1quk7tnbgob2815xmd 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of anx zd0uik6: ;cd equilateral triangle which measures 3iuddk:x 06;cz0 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges rzlv++ mnfi* j9fkg5h/u*m tbg1n/1dx l4ng: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 ongj: lzhl11rf/ mx5 9*+ f gk*+gtdvnninmub/ 4 it would be zero?

  A +3.0-C charge is at the origin and a +9.0-Cs sm8 j77juq(0ay7e b9lz2j az charge is at x = 4.0 m. Where on bye(8qsa7zm97zl 7ajj su0 2 jthe x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q g1phkydt e. 84is placed at x = 2a. Where can a third positive charge +q be playkh1t pg4.e8 dced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. m jmf-u7 ;i4niA 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 o u1z;kt6tk34gf yjvkg6b ;pk1f gravity by the attraction of a fixed proton some distance above iju;kb6kg1kt g3k vf y4p6z t;1t. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point xfwxq g2y* 4k-by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads iskg*-2qwxfyx 4 $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40ed utc-0h sy8h1. What is the magnitude of the electric field at ac s1u-yhdt 08h distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at 1nzjr(wd abtda,7h6 :2sa je:a distance of 1.50 m from a 50.02d7dbh:nw,jas1t ra a:(z6 je-nC charge?

  A 5.0-C charge is 10 m .u k0vqvsaz:-from a small test charge. What is the magnitude of the electric field at theqs :vzu- .0vak location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directiox;hnmb -h/qb l5y49gd n of the end;5 /bm gyqh4lx9bh- lectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the 1f)vah5da:5h( j* k ) pxptaromagnitude of the force experienced by a 1.0 nC charge placed at thehr)tjp5 ha* 5aapdk1 (xo)fv: location of the test charge?

  Two point charges each have a value kq+4gd+drcp-3i3rmp af, d*cm/gzx1 of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midxk p+m gd rimzap33/41-d+qg,df r*c cway 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 charg 9.o(w6m.oq2e2 tix4p)j v,u1 jcawv sm. dyele is placed at the 50 cev6(d..o w2 mxwma9 .vie1jp ,u cjo4sql y)2tm 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 s;jls,zt 5,rvz 9rd7d a -4.0 mC charge is pv z,z ;d,s75 rdlt9rsjlaced 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 =1.m8ubofzat9 o q-lr( 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betz 1bmoor9 tla8f-q(.uween them?

  Three 3.0 mC charges are at the three corners of a sflkl;e8:g) d vquare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fie8de ;gvflk: )lld at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at thexeq 1oz:pn93q corners of the squa91p :qnxqz3eo re 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 the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placnx+ )e9vck/ks:1 ha; c yur)pied in a uniform electric field. What is the magnit9sc)1/ yiup):rkh;nvxa ekc +ude of this electric field?

  A particle with a char; b w6f/ht4kbdtcdi2)ge 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 p t; bmkl z)(onwna+uau(-r*b+ laced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspendedz+bn ) a otbwumk-u( +*nar(l;?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. a9 qek3vuac7v.)p52 c. ,yee kspk7 kl9q mca) The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and dire2. cycke q7e kke))ma,qla vpsv 59kc9 au.p73ction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What ie,h 5 nfaklw0 p26u93tlf6a pbs the magnitude of the electr,fw3k6 5blh lf aeant 2pu690pic 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 2wm5q8 hju )pelnk oc9cm2u 0-d yod:4the electricq m o5lo:eu9 pydw28cm h)2dckju 0n-4 field 6.0 cm from the center of the sphere?