State the law of conservation of ele iarkt5 wu b3o--;0ee+gqgm:ectric charge.

  Is it possible for two negativd wnxs r)qj5 -h:nj+ fst2w lpd*o(u9)e charges to attract each other?

  Is it possible for a positive and a negative charge to attract eachbq2zhb,w cc, 4 other?

  A glass rod is rubbed with a piece of silk. During the process the glass rorj l +wud,d-+rd acquires a positive charge and the sijd+dr wr+u, -llk

  A proton carries a

  The model of the atom showwpw2q nqjj:m24sl a9,s a

  A neutral atom always has(xtlcm424y gqhkqq8 )

  An atom has more electrons than protons. The alzo(k 6m7z4h atom is

  Materials in which the electrv ;uosw32m v+)f3ck: r tn+djyons are bound very tightly to the nuclei are referred ;fo)+y sjcr +vv:3u2tkwm3n d to as

  Materials in which the electrtut t1*gxr .j2ons are bound very loosely to the nuclei and can move about freely within the material are referred to asr*t1t g2 ujxt.

  A negatively charged ro2bzkj/;n*/moj 8oig h d is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the 8obimk hzjj gn*/ 2;o/charged rod will be charged

  Sphere A carries a net positive charge, and spher.kt9gh m:jue2e B is neutral. They are placed near each other on an insultu.j2k: gh em9ated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positively:gt70uogcv8 r-d x st3?

  An originally neutral electroscope is briefly touched with a positively charged 1; *h+b8 5an:qjqn9tbiz,iuf ge r5ulglass rod. The electrosc;j*:bi, 9gtuz8ar el 5 15inq+qnufh bope

  An originally neutral electroscope is grounded briefly wha0y-xee74d n(2 mxltzile a positively charged glass rod is held near it. After the gl0e n2yda-7xx4l mz (etass rod is removed, the electroscope

  A positive object touches a neutral electroscopez)dqql6, x0ddj- 9sff, and the leaves separate. Then a negal, d06 x q9sdqzf-j)fdtive object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral * 6e95u aomj*j-kctll 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 the negative object. At no time does either ball touch the negative object. What is thke9 lcjt5u 6l*a*m oj-e final charge on each ball?

  Charge is

  What are the units of the Coulomb con y e,..6km5uuawbvjk - ktb2emg :6a)ostant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largerx7k5*rha75gr ;7hvgkihs 7sn jtm -7j in magnitude thnih7jrsgk 57 5satr7-hg ;mk7 v*7xh jan the second charge.

  Sphere A carries a net charge and sphere dbdn +,n/q;rjB is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic forcr ;n+ddqjbn/ ,e between them?

  Two charged objects attract each other with a certaikt 0ta(4 d)qtpn force. If the charges on both objects are doubled with no change in separation, the forcek40dapqt ) tt( between them

  Two charges are separated by a distance d and exert mutual attkdxf-+z 6vuwd 6ha 4*t*lsd: fractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mu+ wsta*xfudd kzh 6:lv4-fd6 *tual forces?

  Two charged objects attract each other with a force F. What happe 4uaxb zw .x-q02yf(rw:igt) kns to the force between them if one charwi0b . 2q:x(tafu ywg-xk 4)zrge 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 equal to

  An electron and a proton are seiv4k7k 3 xm2 wxxn0rg5qiv ,v3parated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first e 2x0x4mi37v gx iwkr53kvqv,nlectron?

  An electron and a proton are separated by a distance of oun1u/mt rr12h a51kw 1.0 m. What happens to the magnitude of aut5wmr1/1k2ro 1 unh 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. Wofh6:(qtzn7r 4cg, wlhat happens to the size of the force on the protonn7f4qolt,:(g6r zw h c if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center75e; ( 8zi+ya9uean k,w; xp /jobceqadpoa1* of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed th*qu+ 87x1ai e;aopd;ew z/o,9abecjnyp 5ka (at 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 plac(ihft,b q3x: z8t-b:ijhmy ;o ed at the centroid of an equilateral triangle. When a second charge of +Q is placed :h :q ,yizt8ib3 jxh-o ;fm(tbat 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 of +Q placed at one of the other vertices?

  Which of the following is not a vedk )z 31gvyk8hctor?

  At twice the distance from a point charge, the strength orv5 /u j*i,okg7h+0nvs /*x(mt cec kuf the electric field

  Is it possible to have a zxr1v xvn .5pr6ero electric field value between a negative and positive charge along the line joining the two charn5.x1r vxp6 rvges?

  Is it possible to have a zero electric fiel jqu73amk7nq80mvqpuj*kq(;d value between two positive charges p q3q( 7qq7vkm;m jaun0kj8* ualong the line joining the two charges?

  Electric field lines near psitiv c a:2wetpb9s;+k:doo iv/l a;e point charges

  The electric field ssero*eb4r(pb1( 3 kuqhown

  Can electric field l(mpl 7vv ;oc.vines intersect in free space?

  A solid block of metal in electrostatic t5uqlam -y08l8m965 fkx s)s sasv 4syequilibrium is placed in a uniform electric field. Give a statement concerning the ss0) 8-vxsfs 6mql uyl5y5a8tskm9a 4electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphe3*dx j6gi(il cx ed)hg+qdg28 re of equal diameters are each given the same charge, the electric field (E) midway cdil(6g qdd3hx*i)8gejx+g 2between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform eq x xb5x1dpc)+o)f1l5ji* f)ree w,d electric field is directed straight upwared1eq wr)1xl,x * eiocf) +djfx)b55p d. What can be said concerning the charge on the block's top surface?

  If a conductor is in )qmhqgo hh ):dcoy96.electrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere tj pz:b; 5o.w ucfjn2o0hat is grounded. As compared to the case without the hollow sphere, the electric field at a point dir52j;j :p nbofzo u.0wcectly above the hollow sphere has

State three properties of conductors (vv5awi 2nx 8nin static equilibrium.

State Gauss's law.

  The charge carried by one electr;4dnpo 81n+ ywtbaa o*0vuf (uon 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.:5.sosv txu;o How many more protons than electrons does ;xoso:sv t5u. this piece of plastic have?

  What is the charge on 5hfd5: zlgrz hu8t(fx zbv: .3/ft:uq 1 kg of protons?

  An atomic nucleus hasdrdxzaiv::1n2 )o5tu 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 1.52fc0p3h: j7,f o v jl:zls*4jz2cq ntw cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forcewzff0vp*2:q:4 zc hlcn l j3j so2jt,7 between them?

  A 1.0-C charge is 15 m frog7ytgkszs1)m ;cr.l 9m a second charge, and the force between them is 1.0 N. What is the magn. )ggtslzy 1mkc79s ;ritude of the second charge?

  Two 1.0-C charges have a force between them of*fzt pz6 ,)tp*j4vljj 1.0 N. How far apart are they?

  The force between a pnrab4 k94k :rthn 23s$30 \; mC$ 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. If they agds4 agz;ui)wm5 2r/+*sn.. okczd cr yloa54re moved to a new separation of 8.0 cm, what is the electric force betweicsn /4y. 4*+w5 k2zs;5ra ddz l)mocuorgag.en them?

  Three identical point charges of 2.0 a3ge9/p/ob jb5 +7ck l2 jwjowmC are placed on the x-axis. The first 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 5jgojo2c+ p/9ww7b ak3jl/bethe magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed oolh v8*w2j8d sg)om58zb*bjjn the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the g)bd *o*lj8hs2z8 vj5oj w8mbright 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 locatedmc6sy/prwk3h+b;wk+ ka-o 4 h 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 ck4rahh+syk 6 w;/k 3 p+b-mowx = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q c5vai6k/n +h lul, p gp6w(di+is placed 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. Whp5+ liu n6d,g/ i ca6+(wphlkvat 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.t9n+ayzdnz * ;10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on tn tz9n*d +z;yahe 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 = 5.0 n(o0z3 gj; tq9wq/9mtslatjg) ma+-jzC is at (0, 0). m (gtsjaqz) j 9q-zl3 tjmoa /9t;g0+wWhat 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 eqpgpsqf,k(:drabh a1 )b 5;0nkuilateral triangle which measuresgdh:b 5(),bpn1 k; kfars0qa p 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, which are separated by 3.0 m. At what pk1x 5d+po,hip a76n. 2keasuioint, on a line between the two c xi ske7k1padu.o52+,p iha n6harges, would it 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 at the origin and a +9.0-C charyte;jb *dm tvcl00)7tge is at x = 4.0 m. Where on the x-axis can a third cybv m*0 j)tce t;lt0d7harge be placed so the net force on it is zero?

  Charge +2q is placed at the origink)to26,tth zk bd0i;b:k e0p o and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zero,dok0 k):to0tk;b 2 ezip6htb?

  A copper penny has a mass e)p-b cgn(c301.ompjd a7 keg 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 againu.l/ ,fgq9sstg w-k r;st the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the protong-rlg ,u;wq. t9f/kss ?

  Two 0.20-g metal spheres are hung fro+fvskr ,nf+x9 m a common point by nonconducting threads which are 30 cm long. Both are given identical cf v +n9s+fr,xkharges, 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. What is 4bt ug)tlai 6j(-x5zcj-lfze1w k o7/the magnitude of the electric field at a distance of 1.0 m from the nu)7z/iat efb o(kg cx 1jjz-ulwlt4 5-6cleus?

  What are the magnitude a0:yyfuz yn8, ubg xk)*nd direction of the electric field at a distance of 1.50 m fkz byyu0 ygx8 *n)f:u,rom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is kp;bcgh/+rd )the magnitude of the electric field/grck;+ )b hpd at the location of the test charge?

  A 5.0-C charge is 10 m from a sma75c(1g txt9hr i /v *ls c3ttkr)cs-tmll test charge. What is the direction of the electritsttc3kvxh -r1 /(ri*g lm) t7 ts5c9cc field?

  A 5.0-C charge is 10 e-uvzrvqpj1/e3y --jftgomn7e 899v m 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 tz1-7g 3o8qvet j99-/rue-n vf jpevymest charge?

  Two point charges each have a value of 3.0 C and are separated by 7bx9jah;kno/ a distance of 4.0 m. What is the electric field at a point midway between the x7oj9nakb;/ htwo charges?

  A 5.0-mC charge is pw ut;hg0w:vpqdbot19 p*2 pagsn/9b 2laced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. dvu1s/ p bgga;2tpo2 t0b9w ph*:9 qnwWhat is the electric field at the 30 cm mark?

  A 5.0-mC charge is pls6,z ,(*s(v vdlxgc1qp3 qvg oaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm marv 1s6(,*s,qpzo3xlc qdv vg g(k. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.203e b0. k*eb(*scco unf m. What is the magnituob*ec3n.*k 0b(sf c uede of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a sqxqk +jkw :.o m/pjsed1yn1fnqzz5j5. q-l) +xuare of side 0.50 m. The last corner is occupied by a -3.0 m /z:e1 mj z).q+5nskoqn5+jylx1jp-qfkd wx.C charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed uepbdk 8*wr;,e )w7 rfat the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1,repf8w b;)7 u*wekdr, 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 cw yg 3m( q/j80tqh*vqeharge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this elec8hw/qqej qyv m(0 3g*ttric field?

  A particle with a char8-lv(*jnmpgx8 *dw-wr hb2sd ge 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 electric9 b0 8)ohlqfi3e o8uam field of 6000 N/C pointing downwbifm80) lao 3heq98u oard. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a ch-sx 8cts,te k+3upe6jarge of -2.00 nC. The ball is placed inside a unifoj8e ex sc6u,+t tkp-3srm 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 carr.xna,t1-y3q q0 b(ucma*dzef ies a charge of +2.0 mC. What is the magnitude of the e. ea1m30tbyq ,-dxcz* af(n qulectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.i4w asr0 xp0 33x;wwj-blr6c5 v:cwu i0 mC. What is the electric field 6.0 cm from the center of the sph:vw-a 30w 6l4irc; wx0 pxb3j r5uswicere?