State the law of consfjsy r b h7/d;ijx-+)dervation of electric charge.

  Is it possible for two ng0gz)rd)ow w yezqoms;)y4 3 *gvt)) gegative charges to attract each other?

  Is it possible for a psr d/2,(kuwtdv h tnwqv69z6 9ositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. D xd5 l5 a*hr4n+wdlk-i6vr:tzuring the process the glass rod acqu 5kt4n56i +-wa:r* lxhddr vzlires a positive charge and the silk

  A proton carries a

  The model of the atom sho8,h;sc4.chgx :jib)3qmps j:j+ l rujws a

  A neutral atom always has1ovnz u1plo (o9wjbe,t*2w o;

  An atom has more electrons than prots:gli/fzxwe,(, ia2 wons. The atom is

  Materials in which the electrons aresrlt0zk/cd*c(g:ky : bound very tightly to the nuclei are referred tc gt s cry/:k(0*:lkdzo as

  Materials in which thebp l3jovu;z8:ux e,dc4f :w )x electrons are bound very loosely to the nuclei and can move about freely within the material are referred to asxu vf)34wuolp: j8;xb,:e zcd

  A negatively charged rod is brought near one e 5jlga8qw8zq. nd of an uncharged metal bar. The end of the metal bar farthzlgajw q8 58q.est from the charged rod will be charged

  Sphere A carries a net positive charge, and 9/vi1go 7df2a 1kgw;go6pv e tdyw5 *esphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. g5 dt vo 1pfwyg9 w2v;e* k/17oeg6diaWhich statement is correct?

  How can a negatively charged rod charge an electroscopigu zw)j39gz)zy da0/e positively?

  An originally neutral electroscope is briefly touched with a positively charged adjwbh(o1*l6(md) oaglass rod. The elecj )om( wh 6(odlb*1aadtroscope

  An originally neutral electroscope is grq da:8yyj)*ya f;nlf *ounded briefly while a positively charged glass rod isff lq*ajdn:8;)y*yy a held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leav) wj-9 n3dd.1ahhn zzges separate. Then a negative object iad1z)hh-9j wd.z ng3 ns brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an zk;r+;nb5mo( m fi*plinsulated table. A neutral metallic ball rolls straight toward the object, but stbi(z5pof mnl k;*+mr; ops 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 co93;e(kcdt.:g soa ua vnstant $k$, which appears in Coulomb's law?

  Two charged objects are separkx,aehu,ay e1cp 7o *z9*nr *aated by a distance d. The first charge is larger in magnitude than thyr 1az*o9nk eapauecx ** ,h7,e second charge.

  Sphere A carries a net33i7o:ahs dri )fw, lb charge and sphere B is neutral. They are placed near each w bi f:7iha3)rol3,ds other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the cr6c8 f va ybt; uqb6t.w)x5e5aharges on both objects are doubled with no change in separation, the force betw r6fvtbbu;q5 56c wa)xat 8ye.een them

  Two charges are separated by a distance d and exert mutual attractive fj/q cpeaku2r7 v6/ b,sorces of F on each other. If the charges are separated by a distance of d/3, what are tqrk6ecsjb2 v u7/,pa/ he new mutual forces?

  Two charged objects attract each other with a fordtrz7w (:uvl *ce F. What happens to the force between them if one charge is doubled, the other charge is triplet:rdv z7*wul (d, 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. p +0g(smp5d 84 otwltd What happens to the magnitude of the force on the proton if a second electron is placed n+g4 otdmp0 tsdl5 wp8(ext to the first electron?

  An electron and a proton are separated by a distance of 1.1;se*/upm*b. 54waz 1l0 qnlmu bqf vc0 m. What happens to the magnitude of the forcesc;lb*m1.mfwvbe u a4z 0nlp1q5*/qu 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. What hai1 wkf,v(myw )ppens to the size of the force ok1 miw),fv (ywn the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is p0wq5+wtc;cuh yr2 ,i elaced 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 the magnitude of the net electrostatic force acting on the positive charge at the center ofywt ecqiu,2w0 rc;5+ h the square?

  A point charge of +Q is placedr 6w5ld74kch2*lycm+v6tkw ) - fe xbx at the centroid of an equilateral triangle. When a second charge of +Q is 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 ayfm +5ed)r*lx c 6bcx 4wl vhk2w-k67t third charge of +Q placed at one of the other vertices?

  Which of the followinn7rfrl h lq4o//l; o+ug is not a vector?

  At twice the distance from a point charge, the strength of the electrz62hcfv y3jo 9ic field

  Is it possible to have a zero electric field value between a negative and pbz5h c+:,:jk pslha*q ositive charge a:b+q*p lchsk 5h,jz :along the line joining the two charges?

  Is it possible to have a zero electric field value betgduokufd. z9u3fo:/ 5ween two positive charges along the uu3udo :zf 5o9 gk/.fdline joining the two charges?

  Electric field lines n u6: ;v*qsdi0dj0 iy zn5mv/haear psitive point charges

  The electric field shz(n7gz:ci z)n lj:q:nown

  Can electric field lines ibss8:rob47.czx:5 fu f 3hxebn.i2x ontersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elepz lg3jp/ej*fsj/ 6(a ,w78cte gu(io*icnv.ctric field. Give a statement concerning the electric field in the blockil/ s/(t67z eejjfcpv.jwca ig (,opn *g38 u*'s interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each g8 l mhnr1;7(gkg3a6ear)r- o rp u8qsgiven the same q18gr en-gpr7 o grr3( luhm6a)8k ;sacharge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum tz 8 ur7zv tc:d 9k8(vashtr(7rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the blo8z:vr9kzt (ttcvdu(h r77a 8s ck's top surface?

  If a conductor is in electrostatic equilibrium near l ya2xavnvn0.v rq*8)an electric charge

  A positive point charge is enclosed in ael(mac nf:l-ym21i5hyp yfmq .q);w4 hollow metallic sphere that is grounded. As compared to the case without the hollowcm2qfya:. mhnfe yl41q5-;() ymipwl sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stlkaui wrh:x. e,q4b/chl+j. ,atic equilibrium.

State Gauss's law.

  The charge carried b*x3;z p mpcp)ry one 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 +2.0 uwv vr/jeqd 7dx *m5d+t *33oiq+w(vf0 mC. How many more protons than electrons does this piece of plw3xvrj d(+ q/** 7toi vqev 3d5umw+dfastic have?

  What is the charge ozo(u*wtc-nnr ( bz,*kd 2zgn;n 1 kg of protons?

  An atomic nucleus has a1rdrm*hz rnef470 un ct 3xl*4 charge 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 8puz3g 9 2wywgkxqjw8b9gj ( 22.0 and -4.0 mC, respectivwj8 g3bguy9jz2 8 (2k9gwxqwpely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15-*+oc b sw7im adav1y3wo90f jj4b9o e m from a second charge, and the force between them is 1.0 N. Wh+ 3fcsa 979y aijjodoev-4*m1wwb0obat is the magnitude of the second charge?

  Two 1.0-C charges have a force bet- o/xybc h8kp*;kkn az zap/7,ween them of 1.0 N. How far apart are they?

  The force between a 0*.crbuhh/ea30vmnl mzrh)m -.b 7s y$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 qy.y 2jx 2a3 vcy:s2ujcm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betwejucxs:3.aq 22 yyvy2j en them?

  Three identical point charges of 2.0 mC are placux7m4b du 8wp.ed on the x-axis. The first charge is at the origid.u8b 7xu4p mwn, 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 placed on the x-axis. A charge of +2.0 md7 o)kb 8 b5l26slauqsC is placed at the origin, -2.0 m C to theb2 bl7so 5 dkq6lu8a)s 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 acts on the charge at the origin?

  Three point charges are located at the folloc8 x / zxv+94sm1/gl1trjuz htwing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 m/j zuhzxvg1 l 4m+9t/ts crx81C 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 ax9 rsuuzs urs arh07d1(px:c06 b 1qk(+f:nwgt the center of a square, and 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 the magnitude of the force that acts on the center charge u0 qrw un:sfh:+k1p g 1s arxr0 xszu(7b96c(dif 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 wj/zzaw: nrly1bu/)qs7 4 *at1o)f p ois at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on zzao4uwf a 7l )r/:o 1s1n)w/ yjqtb*pthe 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 =6u g8hokj/yj u4b8 cs1 5.0 nC is at (0, 0). What is the directi8 b4/gj jy1uuso86chk on of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of (45+l ci-vq9x(ctgbhi .alh6afd w3e an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one((gb xhctc 6-+5h 3la4dqlfvaiw .9e i of the charges?

  Consider point charges of +r-/zz)vmud vt /o1d;7q5 oc hqQ 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 electrq;oh q uov57 //cd-dtzr v)m1zostatic force acting on it would be zero?

  A +3.0-C charge is atf,qs6im*j3ouxe1o 9u i( 2xcy the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed uf o93x1(, ji oexyquism6*c2so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed (jwxf8 si* *pqat x = 2a. Where can a third positive charge +q be placed so that the force on it ip8ji (sqw x**fs zero?

  A copper penny has a mass of 3.0 g7oui-9 i+adr osxp:qb +bq8t:. 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 of gravitmn cr-70zkm*x9dokr-9dk . ,u:bt ftt y by the attraction of a fixed proton some distance above it. How far above the electron isr - obrk ux-m d n*tt7c.9tk,mz0:9fdk the proton?

  Two 0.20-g metal spheres are hung from a common pointylw . ylj( n:;opvt,2g by nonconducting threads wh,og2p nj(v:tlyyl ;.wich are 30 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 aw4s7m8*m*j71,nirzb +xc6p kzytr mp charge of +40e. What is the magnitude of the electric fi r7zb*pk4mz7,+mp*wys8 j1tcn rx6 im eld at a distance of 1.0 m from the nucleus?

  What are the magnitude andj;u,8ca+ rg df0 e;gai direction of the electric field at a distance of 1.50 m from a 50.0-nC charg;gj ;8rafc dega0,i u+e?

  A 5.0-C charge is 10 m from a small test charge. avzo nifku+ hpy9/81j d y2(:*n9e+adgszu5z What is the magnitude of the ed2 k *j+5y 8: +s(9izeuaunva/h91y znpgfodzlectric 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 ofz/.andone9 mkixp9d;j :i;a 6 the electric field: xam io9j ;9 nid/;pde.k6anz?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o adowz( e 5iv) w+b(41cgs-teif the force experienced by a 1.0 nC charge placed at the loc1 viwi(-c+t dz ae5os(4w )egbation of the test charge?

  Two point charges each have a value of dq/6mqi* eo+b 3.0 C and are separated by a distance of 4.0 m. What iso6i/qeqm b+* d 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 y o2kq7tuxs a*yj4r v-+d b+-;md9teb stick and a -4.0 mC charge is placed at the 50 cm mark. What is thb+mevqd ;29tjo 7ur*k-4+tby xy - dsae electric field at the 30 cm mark?

  A 5.0-mC charge is placed at theg3-cg d7z*hw 4 8goblfn hg57y 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric fielcz3 n*ogh-4 gly7hg5bg fwd 78d zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0vuhq5s4qae ;;8;nkv w and x = 0.20 m. What is thq; a vv u;h8wq5;4knese magnitude 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 m. The l5 wp7vq -5q9h0 vm57ezjrbkydast corner is occupied by a -3.0 mC charge. vm7q wey 9bqz5-p7drh50v5kj Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a sideaj3j9vw ol ckw5i*.-g . Charges are placed at the corners of the square as follows: +4.0 mC atgc.i lj9-wwkva*o5j 3 (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 onmty; iu*xf g/1 a charge of 5.0 mC when it is placed in a uniform electric field. What i*tmfgxiy;/ 1u s the magnitude of this electric field?

  A particle with a ch e;f:l;h4qffj arge 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 f+ vl,qfq thh7q(pla93. e.go an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it f qqh9f7to l.+3ha.,e(pgl vqto be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC.y1e 5p*ep3 al r;z+fsy The ball is placed inside a uniform electric field, and is suspended against the force zas13rep +yy*;f5l epof 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. What ldad04pvd; 5u4l+o lep6 l3xnis the magnitudpdvpl4lded35lox l; a 6u0n4+e of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge ofua : 5m3r2qeb4,awkep,se q 4m 3.0 mC. What is the electric field 6.0 cm frere5q3baw 42ekmq:sum p ,,a4 om the center of the sphere?