State the law of conservation of electric chargrxz7a0r(f o0 pe.

  Is it possible for two negativ v .gqf.nw3ni8e charges to attract each other?

  Is it possible for a positive and a negative charge to attract each ow - 0/+sqtrkw xlal))cther?

  A glass rod is rubbed with a piece of silk. Dur sma2m sd /nbrk1r26;ying the process the glass rod acquires a positive charge and t/ 6dba mn21ym2 ;rsrkshe silk

  A proton carries a

  The model of the atom sh(hx;oplmr): k ows a

  A neutral atom always ha ahfz8 za,/qbny1bs2ydfg0 +, s

  An atom has more electrj.eyd ,fe;5 f)rx/er.ou wu o7ons than protons. The atom is

  Materials in which the electrons are bound veyhs 5v/ (3sacbry tightly to the nuclei are referred to as5s( sbh/vy3 ca

  Materials in which the electrons are s;;k//oan nit qh xgg3-)z2oxbound very loosely to the nuclei and can move about freely within the material areg-hgnoi3tzkx/2)nxa ;qo ; /s referred to as

  A negatively charged rod is brought neqm6h*r7233o pfyugzsonx )2gar one end of an uncharged metal bar. The end of the metal bar farthest from the char) zny u2 x6rg*2og oqspmf3h37ged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutxz01o b d*v7on*ud nsjq 3e5 :i4suf7wral. They are placed near each other on an insulated table. Sphere B is briefly ts j5os 34u :7 nu*x*70q1bivndzewfodouched with a wire that is grounded. Which statement is correct?

  How can a negatively u56o j,n23s6lc2gtqsju)e bi vh 1zu0charged rod charge an electroscope positively?

  An originally neutral elec)e4*hf z/bh/8/ fmxvap5 fce itroscope is briefly touched with a positively charged glass rod. The ee/z)fm4eh8h fv ib/f*x a 5pc/lectroscope

  An originally neutral electroscope is grounded briefly while a positively lt t43h:0uuh gvrre /0charged glass rod is held near it. After the glass rod is removed, the electrost /3tl hr04reu0uvh:g cope

  A positive object touches a neutral electroscope,bbu+) 9 i:.pmtwh,hj k*l3w a 2q5kwmx and the leaves separate. Then a negative object is brought near t* m592pb:,xkwwt i+kju .mqabhwhl )3he electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object .w60in f5be chtbr6yk h;rfo 7mr0) 3pis placed on 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 firy3 fkb7mo.60rh5h)e icb n; 6w0tfrprst 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 Coul x -c.af0o);)lp (hqmlyqu*aaomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by/hpq2 kre5 ) whzhfzdn:9ed7yf w/b2 i.0.ayp a distance d. The first charge is larger i0d:w hnk2/h7 f2zeywef ./y9pdq brzh5.pi a)n magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near eu pmuex,hr*nt49d;l/k :f 7oxach other on an insulated table. Which statement best des*:,oxdxkp /ueuhm4rt 9f ln7 ;cribes the electrostatic force between them?

  Two charged objects atp(+(es ig d/zntract each other with a certain force. If the charges on both objects are doubled with no changeegs/d +pn z((i in separation, the force between them

  Two charges are separated by a distance d and exert mutual attrf; x6k/mfl:xcsbb 2 9bactive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forcex/k 2bcf:f 9l xbs6m;bs?

  Two charged objects attract each other with a force F. What happens to the fop2l :ei dd:wyx2yga.*rce between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original vax:dd :wapy l2g*i.ye2 lue? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens tot9ogcmx/-c z;ytem,d:p/t )l the magn/lt ,xpoygd9cmmz -;t )tc:/eitude of the force on the 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 m. 6d70y;ccio u n What happens to the magnitude of the force onod07ci c 6yu;n 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 hapwtvqs0o - ps5*jsiy(t4*f7uo 7qo ai /pens to the size of the force on the proton if the electron is moved 0.50 m closer to the 0v ta5 7jfussi/*qpw(*7siyq 4 oo-toproton?

  A point charge of +Q is platc8y g6p7qv 9vdi.+(;sd)te6k hzes kced at the center of a square. When a second point charge of -Q is placed at one of the square's corners, it is obsvd6 s9s8g tie.ye6) tqk dphzc7v+;( kerved 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 ceneuppd )ex,zo 4r*r-i 0troid 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 a thixr*r poze),ui4- de0p rd charge of +Q placed at one of the other vertices?

  Which of the following is noti. z.uptx1 ehr wv-.3q .etm(d a vector?

  At twice the distance from a prnsn dl3p :bsco 72ak8dn f0bq/ . lum47;nv3loint charge, the strength of the electric field

  Is it possible to have a deuka vyfh9.tnewrd 1 .of07i1h9c0; g; us.kzero electric field value between a negative and positive chargeed.;w1u.d. v0stn 7ahh c y;uk gfifr91ok9e0 along the line joining the two charges?

  Is it possible to have a zero elect i 8 e07yje,ywzym.v:pric field value between two positive charges along the line joining the two charg7e:we.jimp yv0 8 ,zyyes?

  Electric field lines near psitive poin ssf8x(yg-oey.m;j 7 it charges

  The electric field shownqw)3mlh-6 6 b,qhhj1x toap5e

  Can electric field lines intersect in free spacix y42c8u +cy)s gw(qke?

  A solid block of metal in electrostati (z/ug9kgmt8.yhizi 0/ea 4l ic equilibrium is placed in a uniform electric field. Give a statement concerning t i8zut (/9zgi 4.gm/lha0iye khe electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters arjd 8y.jcisbhp(1 , p/ze each given the same charge, the electric field (E) midway between the center and the surfzp phic.d8,j(/bs1 jy ace is

  A cubic block of aluminum rests on a )gu8r5ral vb.wooden table in a region where a uniform electric fiegl ra.85buv )rld is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an oi c d5jdr(aok+4wa(7electric charge

  A positive point charge is enclosed in a hollow metallic sphere thac1z rwr /q cd)ll(j3*8ylq .cjj5f,qft is grounded. As compared to the case without the hoq 3j)jqf crcll* r1zjc8 yq.wdf5(/,lllow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static f: d8kt91 r.kryyj6kwf7j bu15s - klhequilibrium.

State Gauss's law.

  The charge carried by one q(iwj4/ck( mv)7bheu 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. How manyb-q;y)wke /a uqb76ih more protons than electrons does y-/bhu6;qei aq wk7)bthis piece of plastic have?

  What is the charge on 1 kg of prot4s7im/did*1 d sua/wpons?

  An atomic nucleus has a czp: *(nnws rb)2l vys4harge 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,p8ast6hal0 j; j w,7pt have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric f7slt,aht8pw 06j ;ajporce between them?

  A 1.0-C charge is 15 l+ (ggut oeq:ouzl,gujd97818 k; o.gizm8 nlm from a second charge, and the force between them is 1.0 N. What is the magnitude of the second cha8ou.7t9j em u8;olo8 gz ki ,ug(lgdz q1gn:+lrge?

  Two 1.0-C charges have a forcesv(a78eek4 ul between them of 1.0 N. How far apart are they?

  The force between a 3eoq o-02cnnc e5:psfsj n5z4$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiob*7drhrj, ft;z s47 vence a 1.0-N force. If they arev7r*zhj d7brs;ft,4 o moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges j r+qgmh2ybeup093j z3jji7:of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cmjmhujg ep y3r7q 92z:b30i+ jj, 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 3r+n9-fgiuz) ws5wtzfe53 b n 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 owzwbif n5zsr-fe 935 nt3+ug )f 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 =aha) edk6m l( ,hll,bd1*-qf h 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 force on the 3.00-mC ch,(bld6hla,d )- h1e akh *qmflarge?

  A point charge of +Q is placed a btpi*gm:p-l6o, iog 7mgv 7;at 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 magniim;*oppla7mvi7gt g6 -,bg:o tude 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); Qcz3 xbk-:n-qy3 = 5.0 nC is at (0, nbqc: yzx-k-3 0). 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, 0.10meoi-:3jo ;r a m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on trmoe3o ; j-:aihe 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an e- .sm47wlor um9snh (hmo)8epiz e*h ;quilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which amenhm* 7soiehur h- m)4;psw lo8z.(9cts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.cxdz*c,st1xq 5 ;-crw0 m. At what point, on a line between the two charges, would ix1t*ds rc qxz w-c5;,ct be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is atxzr0:, kvteb4 the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis ck:z,v rb0x4 etan a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wdm: oif)z 7ni+vy-aj6 b qx0b8ug5,lihere can a third positive charge +qb57i +ajbgz:xn vmoiyd0)q,-fi6l u 8 be placed so that the force on it is zero?

  A copper penny has a m,f 1bz/d kuxyzc19xsk8e2fx2ass of 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 up against the forctbcfv5(t6 pkzv2 4xh (e of gravity by the attraction of a fixed pr(cttv6fz4h 2pk(5vb x oton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncondgw./*p+a zddtucting threads which are 30 cm long. Both are given identical charges, and th w*gdpad /+tz.e 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 aww3/ owe munm,yyjkm802 0 h9r charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m y0 hj/kmr2wmw90wmn8ue ,y 3o from the nucleus?

  What are the magnitude and direction of th2+tsf owz)b/fbay5j li(wa70e electric field at a distance of 1.50l/iyjbo 7)+(zafb2saw0t 5wf m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the ufm(vwtc9s:9 k )*ew belectric field at the :w) vstb (9ue9cfwkm*location of the test charge?

  A 5.0-C charge is 10 m from a sme44dg7 :lsq odall test charge. What is the direction of the el sq4:odle4gd 7ectric field?

  A 5.0-C charge is 10 m from a sx)gf 9 u5xrj9mmall test charge. What is the magnitude of the force experienrjf)umgx 95 9xced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges eac2zj3ys 6bw8jkh have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two c68swkbj23y z jharges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and ; e5h3l.e7oqb vy jws7t(ews-a -4.0 mC charge is placed at the 50 cm mark. What is the electric field3jvsw.qe- y(7o be7s wtelh; 5 at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick rh6p3sq22tsick48ia 8f.sdgand a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the twoar 3ht6 .s 28gikp4dfqs s28ci charges is the electric field zero?

  Two point charges of +3.0 9frfnh :g/kdf xr521cmC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the rf51fk 9c x:g2nrfdh/ 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.)1edpxd t7e wh;8ak )i The last corner is occupied by a -3.0 mC charge. Find t p78d)dka)h eiwext; 1he electric field at the center of the square.

  Consider a square which is 1.0 m on a s3;9 tp/ m;e fq5eghalaide. 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 at (0, 1). What is the magnitude of the ele qh5patg; a9;ef3m/elctric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placexyq5j7 c s;z y4c(8v w9glq*ceaz)2 bud in a uniform electric field. What is the magnitude ozy* eqjlv4w zqb5xga8)y29c;c7suc ( f this electric field?

  A particle with a cheogw 4hk r)/e)xo2z9 jarge 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 45z ki*l 3kernmass 0.120 g is placed in an electric field of 6000 N/C pointing downnrz5l 4kiek3*ward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a w4+ /j7q*boqws bl s8ucharge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the l7 *+8bsjswobwq4qu/ force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chaob9zueu.,lq :v h si,xe5t/w1rge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surface?,t 5suo1hx.e:9ieqw/ uz,v lb

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wuy-kmrc.gsf l4 qsk7,8t;u6w hat is the electric fieldrk u 4s7;,.m8gk qusl wcf-6yt 6.0 cm from the center of the sphere?