State the law of conservation of e3fm)q y.3 s37pquopan* yo*t clectric charge.

  Is it possible for two negative charges to attrsf2q*dbwmu l:5wj1n2zq av- 4act each other?

  Is it possible for a positigo )dk*5 xau*lve and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass /iz+o/ 0n8uh, z mxxsjrod acquires a positive charg0sn+ , xzoz ij8u/h/xme and the silk

  A proton carries a

  The model of the atom show,gl-oy81v 8 aopmv)k/w dn+u)cshn.e s a

  A neutral atom always ha(x k l3 occo:7 h14:l ix2l4bvkurkxj/s

  An atom has more electrons than protons. f;4e-n3hi 5 ijhm0sbk The atom is

  Materials in which the eleupy;w(e*,c 9ty.k tdoctrons are bound very tightly to the nuclei are referred uwc.dy9t oy;epkt,(* to as

  Materials in which tx775cq1m w6glp7p day xy1qs 7e)d jw2he electrons are bound very loosely to the nuclei and can move about freely within the material are refcqw7 yqxa g d2elyx7dp6psmw1 1)j77 5erred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. hcn1l7-qdk+cpx)y f. The end of the metal bar f ln1yxq-+ fcp7.h kcd)arthest from the charged rod will be charged

  Sphere A carries a net positive charge, and ;hby3o2meftl6 vlqb *.;t8u1xzy k +qxq( 3wcsphere B is neutral. They are placed near each other on an insulated table.zckyw2ovyml;q.; 3q1fb8h lu ( t* ex3bx t6q+ Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrosc(uav; y pa*o;yp266 hxv)oeb jope positively?

  An originally neutral electroscope is 9cz4p2au7o vzr0j +ugih:v 6i briefly touched with a positively charged glass rod. The electrosui6oh 47avvzrug jp0:+z i9c2cope

  An originally neutral electroscope iszapc2y -)zk7i grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the )z7 ykaip-zc 2electroscope

  A positive object touches a neutral electroscope, and the leai;rdlbf6i: p0ves separate. Then a negative objectf6ri :bi pl0;d is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged objee syig/,/wc6 k zx4;qoct is placed on an insulated table. A neutral metallic ball rolls st kgz/4oc; esqyxwi,6/raight 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 the final charge on each ball?

  Charge is

  What are the units of tvm 6( wdjzbc.8 pjbghp +4s(b7he Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge i7s t01:z2 3 9senj97ibv+gr xylesuvbs larger in magnitvs37jst:zl 0 b2rbe 9+ix17u9gevsn yude than the second charge.

  Sphere A carries a net charge and sphere B is t*5o/jtfe i7n neutral. They are placed near each other on an insulated t eof *i7jtt5/nable. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a cejqmhd3f:b yc.,a kxb*3to5 3vrtain force. If the charges on both objects are doubled with no change in separation, the force between thehm b53x,fd jyc: b3vq.kao3*tm

  Two charges are separated by a distance d and exert mutuakk 0 ;uf.oi;jvl attractive forces of Fiu;k v0.;ojfk on each other. 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 happe;cen78f i yeqlwi ;6s5ns to 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 i 6cwye;8n 5i isefq7l;ts original value? The force is now equal to

  An electron and a proton are sepn4h kci r *p*nil06am-oa+4ilarated 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 firp6k 4*onr - aihn+l4lmi c0ia*st electron?

  An electron and a proton are separated by a distance of 1.0 m. W-zm,xdqh:ytm f*)etb 1 m4 rz+hat happens to the magnitude of the force o*1tymhfrd zx-:emz )m qt4b+ ,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.gp62cnc s8yej v2m9zjk onv2s; 0t6s* 0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the proton?o 2ckjn8v ytmvz cn9j;0 2ps62g*6es s

  A point charge of +Q is placed at the center of a squar 4sqwu ,vkidxhn6:d;.ae)1w aip71bt e. 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 pw a)xiikvsn b pd7 ;:q4,td1e6w.1a hulaced 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 ce/fa9j* knv h (/ibchvgza8 :e5ntroid of an equilateral triangle. When a second charge ov*he kcv (9b/ /h8njgaa 5:ifzf +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 of +Q placed at one of the other vertices?

  Which of the following is not7xic9 s.wg5. xwerju+ a vector?

  At twice the distance from a point charge, the strength of the elect3n :2eoyyn, ) o1kxvenric field

  Is it possible to have a zero electric field value between a negavbj7-idpi h-rwz+wj :( p3yq/tive and positive charge along t/z7i vj+h3djb- q:r y w-piwp(he line joining the two charges?

  Is it possible to have a zero electric field value between two positive cftficvw/d4rbv *c9,5 harges along r dtbiwcfv, v9/5*f 4cthe line joining the two charges?

  Electric field lines near psitive point chargeg p(e)wg.qve5m7/ue cs

  The electric field sho9up t . *fu.02fw5,wucchqkadd;2 n anwn

  Can electric field lines intersect in fdi:gxz63cy. s5+prveree space?

  A solid block of metal in elecfufk)4f6r, tr trostatic equilibrium is placed in a uniform electric fieldut6 f4rff,k) r. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a)ak m gw2trdqsbbd;3z 4+c ,2m hollow metal sphere of equal diameters are each given the same cab+w k2t,b; crg )d2z4qmdsm3harge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform ei d( 3qq3s9xdblectric field is directed straight upward. What can be said concerning the charge 3ibs3dq(9x dqon the block's top surface?

  If a conductor is in electrostatic equilibrium near / -gxfy,gud0 fan electric charge

  A positive point charge is enclosed in a hollow metallic sphere tv j *a2;67empv*rswjfk3l2lj8 ov32hvxa 0dg hat is grounded. As compvv32j*8al0ej 3k 2jrp2 dgv;ofax *lv 7mhsw6ared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertizn:t8*s0v ruj es of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one )u midc+tz/3la e -lf/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 pf aicz53 +ul)mC. How many more protons than electrons does this piece of plastic h )uz 3il+ap5cfave?

  What is the charge on 1 kg d)ey9n kqmvk ()xio8t p)67xy of protons?

  An atomic nucleus has a charge l1)ozafar (7af6rh5 pof $+40e$. 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 oa6r/b7z9. nmyol/mh tyw 6uihg/ 2 n*mC, respectively. What is the magnitude of the electric force betwee zmo7ghw namb/92yn.i/ouy /h tl 6r6*n them?

  A 1.0-C charge is 15 m from a second charge, and the force between d:i ye(wo3)0ug )phuig 0/tqothem is 1.0 N. What is the magnitude of/i)qy 0go(i )howp3eu0u gt :d the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Homzb t63/(sx kjn0*9 cbpal4jkw far apart are they?

  The force between a ad9gd7-z b,qk$30 \; mC$ 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 1gxi -05vtr w*x.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric fov5- gw0xix* rtrce between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Th94 vx,tm) zk bp9.b q-kna-xqbe 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 the magnitude and direction of the electrostaa, 94 .9qbmkbq-nvx)-zpk txbtic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 *n /rcyyet *2e 1/bb* tg*lrdpmC 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 a1r*te nc/ **b2l yp/rdyg*bet nd direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following pou 9b;r4y/2a l+mclhtr*j;w aisitions: 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 i2u+m49ahl; c/b*iray r ;wltjs 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 point cha3rxb9/ :k/j 2cxow mugrge 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 magnitude of the force that acts on the centxb/2wc3 r/9o gj: umxker 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 ak 0e,x dx((zclt (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What i ze dck0,(xxl(s 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 iv ;c1z uvx;z3zf:k1 wfs at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wha13 wvzcxuzfkv1; ;:fzt 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 equilat(u)cutkzig;x117 1vlefqn7 l eral triangle which measures (e ;vf)zxiklu7t gn7l111qc u 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 rsh 7jwjge*cly44skuqc w7shq ;-0o7 0t ve) 4separated 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 fc 0j o whgwsc u7-e;4v*0ye4j lt)47sqrkshq7orce acting on it would be zero?

  A +3.0-C charge is at(c wkc/akh.3x . xsvv49 lq)qwz+0ssf the origin and a +9.0-C charge is at x = 4.0 m. Where on qc4vk3sxfw z(qwsks )l9 hx/+0 c.a .vthe x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the kx5nn 27sc0t gp cj,i-origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the f0 j,5 cn2-pgci7sx ktnorce on it is zero?

  A copper penny has a mass of 3.0 g. ws9no h*qq:xt:;dz p : 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 gravit: eqwpxj- /2hny by the attraction of a fixed proton some disw/:npq-j e2 hxtance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common pooh,be7o: a o-mint by nonconducting threads which are 3oam 7o be-oh,:0 cm 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 ch+*h+ *km l4v6hokmo2xdqgb l8 arge of +40e. What is the magnitude of the electric field at a*6mk4d +homlqkg+ 8x2 lv *ohb distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.5ncni(m/.v / ls0 m from a 5s m/i/.(l vcnn0.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the ljh57l0lw+74t w wfhx electric field at the location of the test chargej+w4 hl lww7fhtl5 x70?

  A 5.0-C charge is 10 m from :kwh21 sck15qwr urq *a small test charge. What is the direction of the electric field?k1: rs1r whw52qq*cku

  A 5.0-C charge is 10 m from a small test charge k6njq9luqa4xqd43r-6 *of x j. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of th4qq6q*fox an r3ju-6j k9d4 xle test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance ofe.asiizu :g3 + 4.0 m. Wh3 e.iug zi+a:sat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the. n3u 7x43v h7hjj,-l nzcvwikt4d ok82 oudu9 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is tc4ux3jd,jn ou4 8 lzvh3whuo 2vk9 dk.ni77 t-he electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cmy/g:eu 3x bg2e qrn:9a.c;pef mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what poine ge f:ap:cruyb.3e2n9/g q;x t 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 8 ga fz) )wsyca(;5jhx:q knp9= 0.20 m. What is the magnitude of the electric field at t skng )zcqaw)fhy5:;x8( j9pahe point midway between them?

  Three 3.0 mC charges are at the three corners of a square of si jd-mr y bw,5j;q,b-mth57goide 0.50 m. The last corner is occupied d m;7ow ,5jr-ybmq5-g bijht ,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. Charges are placed ; *wkv4o:ibdv4,s s,wz2 nfxk1hol1tat the corners of the h14vbl , skdino f;w *t,:vo4kws1z2x 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 electric field at the square's center?

  A force of 10 N acts on a charge of 5g*g/w648g qakyg8wk a/m74drskc x 9lebe /6v.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric field?k/a //s4a l66k4gg eg 7rcx wqmbg89ywe*vdk8

  A particle with a charge of 4. e/ gn0fv/6viy0 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 electric fieslu3+x0xzcx )w 3:gg.gv lx*s ld of 6000 N/C pointing downward. What charge must be plax*)3 zxwl:cus+l gsxvg. gx30ced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a ch4l.g1 dgyeja/8zh g f1arge of -2.00 nC. The ball is placed in41 /1y8ehl.gza fggd jside 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. What ishrp.*j793qwsc zx u5h the magnitude of the electric field 5.0 cm from the sphere's surface hqusr9j*p7zcxh 3. 5w?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the e-aed 4i(oq t5cpy17bf lectric field 6.0 cm from the center of the spherqbf iy atop7ce4d5(1-e?