State the law of conservation of elec bxxxjg,4m ubqnqbf. b6h5/x1zi (a, ;tric charge.

  Is it possible for two negative chao +1,q b12o.jyw9z tlmtzbrf 3rges to attract each other?

  Is it possible for a positiveatd*+2 ( dm-2lqrjeib and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the g ysyq+(prm.-6h2 szq glass rod acquires a positive charge ands.q+y gph-6r2 s mqz(y the silk

  A proton carries a

  The model of the atom shows 7mu w/hftr(:da

  A neutral atom always2, ,keh1wkdf whyr 6rgg;h 7n; 2oz0kt has

  An atom has more electrons than proei*(+4qv l85n g+6k5napebpqlybh:a tons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei arftbct3mea1, n/c qo -:e referre f:/nct,ebq1 3o a-cmtd to as

  Materials in which the electrons are bound ver, m e057acpe 9ggmjoh.y loosely to the nuclei and can move about freely within the matermg0ch,m.ogjpe9 7e a5ial are referred to as

  A negatively charged rod is btqfm(vzlxq kl1k+m*z +a*-v- rought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will bez-q a -q *+1xt mv*flz(lvkmk+ charged

  Sphere A carries a net positive charge, and m8jcp2w7qd h 75u6ai 8+cijyusphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wir+i ci78d myp58w2 6uuqc7ajhj e that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positively?dk,qx(isr kt8)6ka ( )a+hxin.gij /s

  An originally neutral electroscope is briefly touched with a o9 unve*9e1; lbqch:q positively charged glas noq;uce1h l9eb9:vq*s rod. The electroscope

  An originally neutral electroscope is grop+m,q g fi*gnqozcfhx80 sg5sg., 8 u2unded briefly while a positively charged glass rod is held near ic8*pgzu0 snq 8,5s m2f gfgqi,g+.xoht. After the glass rod is removed, the electroscope

  A positive object touches a neu:g;nv*s9pbs :zmpwl . tral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does l*sp z9.:pws vm:n;bgnot touch it. What happens to the leaves?

  A large negatively charged object is placed on an ins o .3ymyccj:uuim9z 8oa/ -w:mulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutam z: :y mcuoj3cm/ 8i-9yw.uoral 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 ofd.e ov*tb 7m*.-a r45lxynl gi the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge r2 ) wwj4*raa52-ams) ruuebn8sq9fc is larger in magnitude than the second cucban 5a28w4sj - frw2u*qmra9e s))r harge.

  Sphere A carries a net charge and sphere B is neutral. They are placujpkv (w6t)/fm/r )w xs8 m5pjed near each other on ( /r/vm)w5tpsjfxw 8m)pkj6u an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each othl5jrm)3h vo8 wl3 j0seer with a certain force. If the charges on both objects are doubled with no change in)v 3lm 53ejo8 0srljwh separation, the force between them

  Two charges are separated by a distance d and exert mutual aghp/v c:l/-kylp4w2et 8z t+ c;0wzinnp).jq ttractive forces of F on each ok).tew-p 8 ny4hl+/z qpgzj0 2i:vpc w/ cntl;ther. 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 force F. What happenzzfce;q / 1sb/nsvs g, jz8(i/s to the force between them if one charge is doubled, the other charge is triplese/f1/ j ig8; vb/qzzn(,czssd, 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 m4lx umu92 djp:. What happens to the magnitude of the force on the :duu j9 m2l4xpproton if a second electron is placed next to the first electron?

  An electron and a prot,1z :y-na0czaf ga u3mon are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electr,z 0amfz3n1a gy cau:-on is placed next to the proton?

  An electron and a proton are separated by a disgyi kz +vnl9o8fg;;c/enb6t- tance of 1.0 m. What happens to the size of the force on the proton if the electron 8il ;+ez /gbc96-n ny;vtfo gkis moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center 5trpwbje) o;mzk * )hiz 17uu-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 beuzhuporw1 kji)-t*7 m;)5 zacting on the positive charge at the center of the square?

  A point charge of +Q is placed at k /fu7t,t7whj b; y+x0bt*gc:*g yu njthe centroid of an equilateral triangle. When a second charge of +Q is placed at one of t/yh*n b0j7uxck u,gt+ tt wf:7;b*jy ghe 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 followini:-uoqpqh t n2wu509fg is not a vector?

  At twice the distance f1ayjlz)rv3m ) rom a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between ain8-)cyr pf)dfh7(rl,;mk tn negative and positiv - tk)fh;d(,fi r )n7l8cmpryne charge along the line joining the two charges?

  Is it possible to have a zero electric z-cgu h 10 7vgaxnkv+9field value between two positive charges alo7a19 +g0vvxkg un-czhng the line joining the two charges?

  Electric field lines nek +jjy/0 g*jjfar psitive point charges

  The electric field sh s.e8p /gc3hcrown

  Can electric field lines inters6sb*lgrb:x 6yect in free space?

  A solid block of metal xp0n -8ot:a:h yzrtq3in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerninga0 :tz noq -rythx83:p the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equa(3ex7 heaogxj c )f1 ); 7fk7c:ybzfctl diameters are each given the same char: 7e)cexaff(3ocx;)zbh1t7f cg 7k yjge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in as; gdxu4xj9q:ve ;1l b region where a uniform electric field is directed straight upward. What can be said concerning the charge on the blo4 :vduq;; xbxl s19jegck's top surface?

  If a conductor is in electro8kji/4mnt au-0/ 7 8txmjatnlstatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow memzilk /,l+5sl tallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above tk5l +sliz/lm,he hollow sphere has

State three properties of conductors in static equill50ti4 z*am-o e 0fexp6kbij5ibrium.

State Gauss's law.

  The charge carried by one electron i tt,6c5so c,gna-li5ps $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2.00ojc3pzc* -bx - mC. How many more protons than electrons does this piece of pb*zj-x-cc 3oplastic have?

  What is the charge on 1 kg of wi ,kre6px d31-ongv5 lhy10 dprotons?

  An atomic nucleus has a charge )fir38u7 s(wbbqyvq7+ia ;sy 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 ch n::7rn/ la:rajljc) r) zf(yuarge values of 2.0 and -4.0 mC, respectively. What is the magl arr:zlf) a7 )/ r(jn:jcnuy:nitude of the electric force between them?

  A 1.0-C charge is 15 m from a second chargtgc h/zae3a4x 8shp529 ;sq58l ntgsje, and the force between them is 1.0 N. What is the mqp cg9 3j;xgsh58th4ln/ ts2z s a5ae8agnitude of the second charge?

  Two 1.0-C charges have a force betr or o)5ac6q6zg .g+poween them of 1.0 N. How far apart are they?

  The force between a aaa. v cu0p81z$30 \; mC$ 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 1q2x vc3.z*s)rji jkc) ,sitv).0-N force. If they are moved icjk) q* ic 3x2vsr,j.v)sz)tto a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fipm0v bg8izb -d j(s)k-rst 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 magnitude and direction of the electrostatic force which 0vb-p(kg- ijm sb)d8z acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2t /nj2 j5m0cbr.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 direjc/2 jb0rnmt 5ction of the electrostatic force which acts on the charge at the origin?

  Three point charges are eh m5s3rtkk/2l 0sm6glocated at 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 = -1.00 m. What is the magnitude of the forcst3 lm20skkh6 r/g5em e on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a s dyw,jkfw.au*/zyr 4 ;econd point charge of -Q is d*y.4j ;afrk,yww uz/ 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 if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1p atn;ka+8 r.k3ep a6g0 yi0nd.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). aa i3g8p .en;6ka+dt0pknry0 What is the 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); Q9qxrewj tw+b6j0.0 xg 3 = 5.0 nC is at (0, 0). What is the direction of the net force owqx9rx6w0g0j+te . jbn the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral j0xh6hbkc5t2v+ (rcr triangle which measures 30 cm on a side. W + 5ct0bjrhkx2vh6cr( hat is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what * : ndqzzmpt29point, on a line between the two charges, would it be possible to9z *qndtp:z2m place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C chardghuxoatqf5+ 98er* 5ge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net for 5q+ *xaoetrd 8hfu5g9ce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where cang+hxi.55ajh a a third positive charge +q be placed so that the force on it i5 x+jaga 5hh.is zero?

  A copper penny has a mass ;ug-z6z c zc:aof 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 qk dkbqfqgz 507 lvs+4 3( g,aemmv/5zup against the force of gravity by the attraction of a fixed proton some distance above it. How far above vk 557m3q ,gb4+/ag0 qmdvz (klzqfes the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point ;5s8lhfwlf 1a 4a*d2,bpk fbl by nonconducting threads which are 30 cm long. Both are given i1f8 lf2a5 d4sbbpkalw,flh*;dentical 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 sb*q6pf,zz.f +40e. What is the magnitude of the electric field atf qp zfs*b.,z6 a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of il* w4 x*,ebj 9trhnj0wpb;0kthe electric field at a distance of 1.50 m from a 50.0-nC *,k 0 9 *jnw4;w0bltjixephbrcharge?

  A 5.0-C charge is 10 m gp45i)ie9nds from a small test charge. What is the magnitude of the electric field at the location of the tes)d spingi594 et charge?

  A 5.0-C charge is 10 m from a small0 ):juum*pn*qppo .md test charge. What is the direction of the electupq0*npu .mjo d:mp) *ric field?

  A 5.0-C charge is 10 m from a small testa47 q* ,1l)bs46nyxw jnwzlg q charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locaq,l)agsw6 74j* ynnq1 4xzbwltion of the test charge?

  Two point charges each have a value of 3.02e( vl l zg9miex+m(n( C and are separated by a distance of 4.0 m. What is the electric field zix(m(vlnm+l(ge 9e2 at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick g8 xc-arg4knv7-e j *land a -4.0 mC charge is placed at t-n-g gxr7j 4 a*evclk8he 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0:be7s xal4ces.j2fx0 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 x4 e02j7.lesfsab x: cthe electric field zero?

  Two point charges of +3.0 mC and -- 4xm8py-bm/rxand 5roaa; 2 tp r)v:t7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnp 4 txrmy xa/-m tr 5da)bp:va;r-n28oitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the threea6uh,jlvk/4z 5c ;bzi corners of a square of side 0.50 m. The last corner ikjzz b;5 la/vi64 ,cuhs occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m pzcg k;5xn49aon a side. Charges 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 kc;apx5g4nz 9 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 kfkj( 7eamp/gk,k qg,p, ;.alw -le 6pwhen it is placed in a uniform electric field. What is the magnitude of this ell;.6 p wkqkjgm- p g/7(e,kakp,fe al,ectric field?

  A particle with a chargbhk;5lo 1c ,xqbf6zb5e 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 an ele .sig+ynoi5 e1c4ndv 5ctric field of 6000 N/C pointing downward. What charge mu o.isc+415ny5 dievg nst be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charfq6m50z+hz u ige of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the m qf6z5mz0hi +uagnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnitxtfj, cim;2v z4(yu8b ude of the electric field 5.0 cm from the sphere'mib84ut;jfv,2cz (y x s surface?

  A metal sphere of radius 2.0 cm carries a charg8qp vz3wr r7ke z*,z+ke of 3.0 mC. What is the electric fielz+z rkek38 ,z*vqw 7prd 6.0 cm from the center of the sphere?