State the law of conservation o;dhd (arq1fk 6rb1 ii2f electric charge.

  Is it possible for two negatt:w6zyke*zppem7 . . hive charges to attract each other?

  Is it possible for a positive and a negative charge to a; d:cvhqu9 vzl48z p4qttract each other?

  A glass rod is rubbed with a piece of silk.kuyved kza z/5p;ih,5w qd-79 During the process the glass rod acquires a positive charge an;dki, q7u-z apwyh5zde / vk95d the silk

  A proton carries a

  The model of the atom s7 r1amt3o 0do:1na bbbhows a

  A neutral atom always6sg*s sbo2y.ct)vq 4o1i nys- has

  An atom has more electrons than oit j(fk /rh*onr j i103u u(v49q(fxcprotons. The atom is

  Materials in which the elf9abqxd ,fdp+.n 4g2ib xq4)e ectrons are bound very tightly to the nuclei are referred to asaqd2d)xnq .b e4i, 9 x+gpfb4f

  Materials in which the xs,4hnge.e9w/ taa deu02, spelectrons are bound very loosely to the nuclei and can move about freely witdea ,esau,nte p sw4.x02gh9/hin the material are referred to as

  A negatively charged rod is brought near one end of an unchar.fnt s 9 :m w0o1o24ueikqmhi(ged metal bar. The end of the metal bar farthest from the charged rod will be charge mm o.0 su4k1 en2h9wf:iqtoi(d

  Sphere A carries a net positive charge, and sphere B is8w4v i,p9bpxv ,mrc:e neutral. They are placed near each other on an i ,:vrpv ximp bcw,8e94nsulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscopwc ck *s:znl63e positively?

  An originally neutral electroscope is brief8opj-qc 0s)e:cikiz, ly touched with a positively charged glass ro8o)0 e,z ks-c:ipcj iqd. The electroscope

  An originally neutral electroscope is grounded brieflynb1pt/w7s s8d while a positively charged glass rod is held near it. After th/w718st dbsn pe glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and thiwq-25 u1 gi d gf:ze+s)du(p:t+pet ze leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What hwz)1dz+gupeu:(e tg dfqi-p25s:+it appens to the leaves?

  A large negatively charged object is placxiz- .l(u9nv zed 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 first ball, and stops. The first ball rolls forward, but does not touch tv n-9u(z. xizlhe 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 Coulo lhg j,0/dq.gbmb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated byrw1j um;0p 8o4ac5n6uo xm9jc* r;m1bo2 a hxn a distance d. The first charge is larger in magnitude than the second ona;9no5r* au mrco6ju h cp10;m4bm x8w1x j2charge.

  Sphere A carries a net charge and sphere mw,4pksx c(p7v ddf -*, p-fciB is neutral. They are placed near each other on an i-,4ic vmpp7dsdf *p,fx- kw(cnsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attraca, oq .nyz.3ogpcarg ie3,s-1t each other with a certain force. If the charges on both objects are doubled with no change in separation, the f3ro ig nsy-,qag zc .opae.,31orce between them

  Two charges are separated by a distance d and exert06ru a93 gi)pml6se48s+zoch9px dez mutual attractive forces of F on each other. If the charges are separated by a ducem 6l90sia3p xsgrez9p 8) o6z+ h4distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens .hy g.ka t kst5)q;vw)ip+8lpto the force 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 value? The force is now pwl+h gk.)tq.y si v5)p;ta8kequal to

  An electron and a proton are separated by a distanc4qw34 k) yh l,3i 3k.hjytkn.t+qv cmre of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the r,)+q4n3kkhmy3yh jw. 3 c lkt4i tvq.first electron?

  An electron and a proton are separated by a distance of 1.0 min-b-8yb ybr 4. What happens to the yb8- nibr-by4 magnitude of the force 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(( onjx g.yyk+gd64 f2oz+ak e happens to the size of the f6 jfoox2.ey( kk+gna zy4+d (gorce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is pl .8z4 tlihh1p9d(dp/d :leupyzg:/ciaced 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 thep gezd8dchi./t9::h i4 y(lluz1 pdp/ 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 ot2 ke7mzg2)wcentroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertict2k)zgm2 oew 7es, 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 following is not a v0jlmj4m t//7av5;zc te, u.-xkds poh ector?

  At twice the distance from a point charge, i q x6-9x4jqywthe strength of the electric field

  Is it possible to have a zero electric fiel vq1 p:f-cum4b*wz4 ta;8anl+rofl-yd value between a negative and positive charge along+wulm ar;v :tq81fbf*nc -o-pzl4 ya4 the line joining the two charges?

  Is it possible to have a zero electri a5)nq4- g)zizyz(y8* ubusjpc field value between two positive charges along the line joining the two* yzanb) g8 (45zzpyusj)i uq- charges?

  Electric field lines near /8 vuk v2l:ed6qkhzvk w/: cqh7t*ot(psitive point charges

  The electric field shownh 2cnxdx*42/l t lq8ww

  Can electric field lines inte(7 ml0a-*ieczxr+frszq3n +k rsect in free space?

  A solid block of metal in el k7427 po oquv-glw,bwectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning wqo7wkb7g4 , v -lou2pthe electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters :tbe47k+kxple+ i :gmare each given the same charge, the electric field (E) midway between th7l+ei:gptm+ exk k b4:e center and the surface is

  A cubic block of aluminum rests on a wooden table inoq i -m8pc tyh83t17.sbl(,up; qmbzw a region where a uniform electric field is direcs7pui1;. cl p-tqqobmy8 th,wb3( mz8 ted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric c9rgzi lrb/y 9a1u8vkw e.w 2-rharge

  A positive point charge is enclsbv971/vapj f 4*p iybp4uv(sx4 zf5sosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electb*v4 us4pp f19 57sbvjvif s/4zp(ayx ric field at a point directly above the hollow sphere has

State three properties of coob kv(x;63f toh bau65nductors in static equilibrium.

State Gauss's law.

  The charge carried by1 w*52k(gk w) nrkxs5bie qg5c 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 +2.00 mC. How manyc(2q ewcp8v .m more protons than electmpv8c(2cw . qerons does this piece of plastic have?

  What is the charge on 1 kg t 4 gch,oc1 ,d-wnph9zlh;eg* o1d4iwof protons?

  An atomic nucleus has a cha-xh l4jp4e fv7*l vpr6rge 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 mC+wftesa*ay:e+ hmagn.-9ue fv -9t)b, respectively. Whba*sh+ -y+ weetfa:. gnamft e v99u-)at is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1 dr9* 8elok/ho.0 N. What is the magnitude of the sd9 eo8*hrk/ loecond charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are( (sw;nw,lb: +ds.u*ea vi 9(mqmoep p they?

  The force between a k,d kxjgaplf kh/hea4q)7wm* 5(9dm 9$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiall-q)vvc*i(;itm/m, j ob:hof ty 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is tvoh*qfvtjbt c; i:-/(o, im) mhe electric force between them?

  Three identical point charges of 2.0 mC are placed on 2r9q7*3z w vltzzz2 dhthe x-axis. The first charge is at the origin, the second to the right at x = 50 cdz v2* rh3z7z9wqt2l zm, 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 ,h 5++ppzbqfgvza/+x 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 force which bv +p/a zh 5xpz+,qgf+acts on the charge at the origin?

  Three point charges are located at the following positions:r74k)d(bnouqqq(t) y Q1 = 2.00 mC at x = 1.00 m; Q2 =(q)(kr)7b oqtq ny4du 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 charge?

  A point charge of +Q is placed at the center of a square, and a second cbgig 9s2q:l0de6nu 5+i 19 v6:syqlcyu5h bapoint 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 c5 +qyu0e2gdli 5hv 169ncaqi: suglb6 cs:9byharge 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 = -1.0 nC is at (0, 0.10 m); Q3 = 5 5h3mh :1me3fq t,uo(j;w lyml.0 nC is at (0, 3umy,jlh o3f5 m:lwm;q1t( he 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, 0.1h;j((fnivlr qk5 r73s0 m); Q3 = 5.0 nC is at (0, 0);rr7 k lqins3f hvj5((. What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are il .ebjlaz *ki/ -.q(eplaced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the e.-*.lqbl/a(ikjze i charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whalxn.yp qxj,g/7ko0 b0t point, on a line between the two charges, would it be possible to place a charge of -Q su0ln0xxkpjyog.b q 7/,ch that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Where o7 tlf4bjsat81 7o5ghkn the x-axis cgjbt8 a5471k slo7fh tan a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin zc2 ok8hqmh92czg5*dtz4 r/-l d7ex kqvw3*u and charge -q is placed at x = 2a. Where can 5/ l-vzowg3xq hmtkd22qr*zd9zch e8uc k*74a third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of ( 9lyetciw *3q8 ncyy13.0 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 force of gravity bwykqf m3,2i*r aap;zc.z1t i:( uww. fy the attraction of a fixed proton some distanceizw if. 31k uwf(azry2w a*qtpm,;c:. above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nbmbg 6 tz)mb95onconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them abtmgb b95) mz6part until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +406; 16t7 d.mzoixgc b)3et;wkx(gg xdr e. What is the magnitude of the electric field at a distance of 1.0 m from the nx)cxoi(zrxe 3g 6 g;k;w t617bddm.gtucleus?

  What are the magnitude anem :gs. ora;/0*qnvmhd direction of the electric field at a distance of 1.50 m from a 50.0-nCvg;ra0. hmm:* e/s onq charge?

  A 5.0-C charge is 10 m from a small test charu19+svga ox /fdrv14kt2l pk;ge. What is the magnitude of the electric field at the location of the tes2r f9sao1kulgxv /1p vdt4+;kt charge?

  A 5.0-C charge is 10 m from a ij*quzn-s ag*qz+- jbr*kva3 y snchz-+8c42small test charge. What is the direction of the electric fiebcsjz2z8 r+c4nags3y-kujvi -* q*n-qh*a+ z ld?

  A 5.0-C charge is 10 m from a sm)dpny :3loba:all test charge. What is the magnitude of the force experienced by a 1.0 nC charge plac)na:oy 3: dlbped at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a diafw j 0y ./vx064tfzsnstance of 4.0 m. What is the electric fielnzf/ 40 fv0j6 txwy.asd at a point midway between the two charges?

  A 5.0-mC charge is placed at the yjd.r ,nn,- d3) gt5ioyc vfuf7q21v5v, siri0 cm mark of a meter stick and a -4.0 mC charge is placed afis32vd5iynfu71rn v i ,c,g5 )vqtj r .y,o-dt the 50 cm 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 a -4.0 5ps*nbgz fab o380rf- mC charge is placed at the 50 cm mark. At what point on a line joining the two charge-5 bsoap3g rf* nfbz08s is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are plagb)-l ol4(y,agb r- rbced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point mi 4b gr-g,la)bl(oy br-dway between them?

  Three 3.0 mC charges asv k- jrinowyn+.x. )+re at the three corners of a square of side 0.50 m. The last corner isk+)ys iv -+wnrj.oxn. 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 on a side. Cha; 9p)ou1r nuzc+h .bwyrges are placed at the corners of the square as follows: +4.0 mbzuhou ;n)19cpw r+y.C 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 pluvk k+ thnz2d31+ r/vus,k(ji aced in a uniform electric field. What is the magnitude of this electric fieldr 2nivsvz k+,hku j 1/u3t(k+d?

  A particle with a charge of 4.0 mC p)u. mmd( bp)0tw vud1has 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 electric field of 600 567b3 u dom4pctgsmom( p**nt0 N/C pointing downward. What charge must be placed on theumo5mt 3o tnpcd6b*7m(4sg* p ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed i jp:0mdaka.2hw+ p,pz5/b pkk nshp+k,wa jkp a. p: p/0b2zdkm5ide a uniform 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 charge of +2.0 mC. Whatr xg(3cz6-aks is the magnitude of the electric field 5.0 cm from the sp sgxrack3- (6zhere's surface?

  A metal sphere of radius 2.0eh 9yn(h ;usgew;,.7g0wpjx z cm carries a charge of 3.0 mC. What is the electric field , guphwx ; ;(wen7.z0g jye9sh6.0 cm from the center of the sphere?