State the law of conservation of electricijsy x35rz8-r 13x; /lcmz ytw charge.

  Is it possible for two negative ch5hdyz6 n9 :k(igvxdb)arges to attract each other?

  Is it possible for a positive and a negatiw5 -dojgq9+r.tnmu cd 5 /9jumve charge to attract each other?

  A glass rod is rubbed with a piece of silk. Du )i6 oh uo u/+xif/-thp6nxu0iring the process the glass rod acquires a positive charge aifx h/h6/-pn0+oi ixt)ou6 uu nd the silk

  A proton carries a

  The model of the atom shows ;k,-mp+qx rxxb- gdydtu 9v*ky ,91nj a

  A neutral atom always h8k*pva*kgl)0ro qzcdf, j;;fas

  An atom has more electrons than protons. The a(+ 4gtzk- t7re2wyowwtom is

  Materials in which the exw5fb k3.nmk*( bmbxuykf8vy17 ,c( nlectrons are bound very tightly to the nuclei are referred t7yw*(mkf kbxn,fkb8b5 mcunyxv 31( . o as

  Materials in which th xo girooi857g9 )slqcy ;5/vse electrons are bound very loosely to the nuclei and can move about fre;xo5 gs/ l)9vig8 oq7ys5orciely within the material are referred to as

  A negatively charged rod is brouel, 2)et n(x lhfr6,zaght near one end of an uncharged metal bar. The end (lxee,rl2t ) n6f ah,zof the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphern *a3bpxf7 bdu * ).kcn*2ufowp2s3yf e B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a w f . *pc 2ykx7 p)wn3sa2uofn3bfd*b*uire that is grounded. Which statement is correct?

  How can a negatively charged rod cheab8b,sreg. u m2 l8a(5tyv4garge an electroscope positively?

  An originally neutral electroscope is briefe7wyur8s g4 /3jw 8kooly touched with a positively charged glass rod. The electro84ooegjsk 3 w8/ ywr7uscope

  An originally neutral electroscope is grounded briefly while r 9oc:32wvuqdi-kv2 j g63ezza positively charged glass rod is held near it. dq:jigr zz2cvv2 39 woe6ku3 - After the glass rod is removed, the electroscope

  A positive object touches a neutral electros j01kh* 5ud-e0*xi;jrobj+pd + ls eoocope, and the leaves separate. Then a negative object is brought near t *j o 5d xdl+e;hso+bjriu0p1k*oj0-ehe electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insular s ko;r(uevf.60uo3m ba;3uoted table. A neutral metallic ball rolls straight toward the object, but stoob.3 oav0suf3e(mu;kro ;6r u ps 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 consg.0k gix2n i9yuf0km 1tant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first/ qu4kh,okdz* charge is larger in magnitude than the second ch*z ud 4,qok/kharge.

  Sphere A carries a net charge an 02g-)wav9fc ljcx djbb4)xd5 d sphere B is neutral. They are placed near each other on an ind-ja 9xbf)4w bcvgl052d c x)jsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other wn 4qe08aw:b:yb9 pd .xjq -hlwith a certain force. If the charges on both objl0dj h:4weypbxnq:bq9 8wa . -ects are doubled with no change in separation, the force between them

  Two charges are separated by a dgohwr6kb;d (ar v+ q+.istance d and exert mutual attractive forces of F on each other.d6wbgar++ro. ; q(vhk If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forceb,3yuoz.5voa e5 3v pz4 yj:tw F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their cv5z3ve3 toyjuzo5,:.b 4payw enters is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated3xf:vuuz+255o)sn/ xjt mx p h by a distance of 1.0 m. What happens to the magnitude of the force on j/p zt x5ou mx5)+3unxhv:fs2the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 mb8 yk7i3/f ds,bvov q9. What happens to the magnitude of the force on the first electron sd739oy/vfi vb,kbq8 if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance aa-,,wddq u717ctg1n*gnqlyz6 (bh uof 1.0 m. What happens to th1 tqwb n6(agc,1u,7 qdd-* hn7gayzul e size of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed ja zt3,)ia9gbwp /xy 0at 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. Npy)xi 3tgbw ,0a/a9 zjow, 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;jri8p./esrx t,y m9n quilateral 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 a third charge/,rxn9ir.s yejm;8p t of +Q placed at one of the other vertices?

  Which of the following is not b8*ah+y 7 x n2tdldz/ka vector?

  At twice the distance from a point charge, the strength of the electri+t6azfl; .g+wt,aru xche t 25c field

  Is it possible to have a zero electric field value between a negative ae1 zp8ifwzsp :w, p)q-4 otb,ynd positive charge along the line 8eb-ozy p1w4 t,z)s q, wpif:pjoining the two charges?

  Is it possible to have a zero electric field v:h 3r l8ah43pk)vp b)bmjzh;qalue between two positive charges along the l3vkmh4):bz j;ha phlq)8 bpr 3ine joining the two charges?

  Electric field lines near psi rscqz -x. ulm+a8x,4lye)b 3ntive point charges

  The electric field shownpzwn amx+y3fm0n-2 k-

  Can electric field lines icvwwc) eoy 2*(ntersect in free space?

  A solid block of metal in electrostatic equilibrium is placsp53sce w99 nqed in a uniform electriesn9ws5 9c q3pc 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 each gieb v-b r7f*hc,ven the same charge, the electric field (E) midway between the center and the surfac*,r-cvbf 7 ebhe is

  A cubic block of aluminum rests on a wooden table in a region where a un; 2plyefmj6ghb1:rx)b (xg*szva) v . iform electric field is directed straight upward. What can be said concerning the charge on the block's top surfacexs yz g1jgel6.vr 2 :axfb))pvhb*;m(?

  If a conductor is in electrostatic equilibrium n76i7 u/tzp kgfz 2pct/ear an electric charge

  A positive point charge is enclosed in a hollow metallic spher)yvabgwqc*l 0605h8a: rk va je that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above r *kwqyha)cvg0:a0lb8 6vj a5 the hollow sphere has

State three properties of cogl*8kem89a 3aj qpm7 anductors in static equilibrium.

State Gauss's law.

  The charge carried by onc84h0j iwkso) e 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 x:kujvd4,i z8* f1bw0/m vy monet charge of +2.00 mC. How many more protons than electrons does this piece of plastic jbvym4vk* dxuw0:/ i1o,8mfz have?

  What is the charge on 1 kg og 9j5g5az lfg7ph fk(/f protons?

  An atomic nucleus hatew :xta9gg85 s a 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 2.0 and -4.0 m: 5 t),kmjfy8gh(b)yt hqka8g C, respectively. What is the magnitude of the electric force b8fy)gbakg8):h m5t( jh q ,ytketween them?

  A 1.0-C charge is 15 m from a*7cp(2uypfr y xb1+fj second charge, and the force between them is 1.0 N. What is the magnitude*+j 1fypb(fu pcy2x 7r of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are therjn;nb -v67l2z ( .8zrungdwyy?

  The force between a 52kd3xu,ahevn7 r m5 d$30 \; mC$ 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.l3zd x8tyc 4*cif*bb- If they are moved to a new separation of 8.0 cm, what is the electric forcti4 *f3cycdxb *zl8 -be between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. i a; z-2dmjt+h9nl. wr The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark9h ;nr2imwtj+. z-dal . What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed om1 nc(m*hs7k/t7 - /(k; ct zypkqoogpn 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 the electrostatic forg;coy qpomz71//km7 k*n sc(kht t(p-ce which acts on the charge at the origin?

  Three point charges are located 6f (pgmmu4 .qwxn5o(-ia) wt fat the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = 4tgqm5 -f6u mon ifa.(( wxw)p-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, andr:v *dc,phx/ovtd;b 5v4mlh )3oj.m s a second point charge of -Q is placed at the upper-left corner. 3;vomr:m lvb.dhx/ h*ojs)td4, v5c p 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.f7b:si bm mp+ykk-f;;0 nC 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 nC chakbf;7bk fpi y:m-;ms+rge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Qdw*m7ha-qmctf b cvtr:s::+,3 = 5.0 nC is at (0, 0). Wh:f7s:wta,dtm :c *mcbq+v-rhat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilates/:,3gnjp* mvo c.4)z s u8s-surio emral triangle whj u*mc-sm.supior4g/o e:3,8n sv z)sich measures 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, whichj oepl0 m su:1+6ot)sz 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 would be zero?ut1 s:j 6+ol)p0mseo z

  A +3.0-C charge is at th( ,p qonw 0z.adj.dj:xe origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net forc.j( pqdad 0 xz:.w,jone on it is zero?

  Charge +2q is placed at the orpl7 ft .c.vl0rigin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the forcvl.7 0ptr.cfl e on it is zero?

  A copper penny has a mass of 3.0 g. A total of zsvo 0lvxirxs (5 kv/(a*kwdmf)u+68$4.0 \times 10^{12} \; electrons$ 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 gravity by thee 0.dc k0v07zbk0i9lj-msfu/wjmwe - attraction of a fixed proton some distance above it. How f 00k.-j kv-sm ebw fw/l9cz7e 0djim0uar above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commg4gmr18mv6r/ wauh( cw vkp48on point by nonconducting threads which are 30 g8mr4ap1g8( 6vc k mwr/wvh 4ucm 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. Wha0,s47mdxqgn: km/. ulwqi nz( t is the magnitude of the electric field at a distanz0(.dm/q7: ,nnw mq4lkusigxce of 1.0 m from the nucleus?

  What are the magnitude and direczdc6.xjqd9zm ) x0t t5sc ;b.xtion of the electric field at a distance of 1.50 m from a 5zc q;bmx.xt)xjz 6td.50 c9ds0.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is thq t8o. azah8nd 7qqiz4i1 tt+7e magnitude of the electric 8qq8 t+7aat4.d inzztqio7 1 hfield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direct y1oh dot p otz14zw/3xf0p;g.oq /uo9ion of the electric field? oh0pygu wo;.dt zq3t9f41z1/x/ opo o

  A 5.0-C charge is 10 rm z ,d/,( .9lhzrzi/:woj( zv mhfne7m from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chargel h //zm:zr w ((v.dizo,erm9fnzhj7,?

  Two point charges each have a value of 3.0 C a b48oxz+z/w hbnd are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chb8w4 /zxzb+o harges?

  A 5.0-mC charge is pla k6qjmcvug,1u7b l *pq)e(dn(ced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at thd ,ne kumq6(jpq 7cu1g*b)vl(e 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick 8 r0jg)rhq* ziy4; evuand a -4.0 mC charge is placed at the 50 cm mark. At hqi;0yruejv zg4*r)8 what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC qsp4zxjh)3pg8z+bl en 3-o1 band -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway bjebz3n1 ph+3xs-4pq l bogz8) etween them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The l g5 m/t sqx-p*6by+vgku3t4huast corner is occupied by a -3.0 mC charge.p5y hs6kvu4-xq+/g 3tb*ug mt Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charujlalej gf26x3 b8:3s o xx5i,ges are placed at the corners of the square 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 magni5ij l: a8,xxj o3l6be ufx32gstude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC w(o smisds3in.748tne hen it is placed in a uniform electric field. What is the magnitude of this elems. i87it(ns dose43n ctric field?

  A particle with a charge o: zqey+ yei+q(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 x6- aade5 .*uo cyrv+dan electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspend5y.a -c+dda orxu6e*ved?

  A foam ball of mass 0.150b4it1l zy6uo*hs sc37r 2/vfn g carries a charge of -2.00 nC. The ball is placed inside a unn6btcl 2ozu7fh1 3v /*riss4y iform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a c 1 awchqvy7n;:harge of +2.0 mC. What is the magnitude of the electric fieldn 7haq:;v 1ywc 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge ovy wp hn5,c+u8f 3.0 mC. What is the electric field 6.0 cm from the center of the n u,phv8wcy5+sphere?