State the law of conservatio/d hon3 8:zmcyn of electric charge.

  Is it possible for two negavfdwsi 8. v/4ut0 , p ense )evpnn/cpzoa,5/1tive charges to attract each other?

  Is it possible for a positive and a k u4tun;; vauijkv8l*81a4 mcnegative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod aczuq-6o 8kefdzm l72 cax8( 4.hmu*0 mtfl)dp yquires a positive charge and thezp82az 04f7-)m*loy tfcux8demm k h d .6uq(l silk

  A proton carries a

  The model of the atom shokfirvl 9+g ;r od7,om1ws a

  A neutral atom always hasw2xhqrtyepe5; yz g6ft i(4 6(

  An atom has more electrons than protons. T e2+iiec/glx8xh7p4 mhe atom is

  Materials in which the electrons are bound very tightly to the nuclei are reftbjmbr1 s8ja7y /:b h(erred b/:j j17htas8rbm y (bto as

  Materials in which the electrons are bound very loosely 2 8 w)j id(f.oftu6e;6qyqcu,rexo)k to the nuclei and can move about freely within the mate8c(q fjid)e)yf tqou2e; ou,x r.w6k6rial are referred to as

  A negatively charged rod is brought near one end ,zyk,ps+c t9sy* n7yuof an uncharged metal bar. The end of the metal bar farthest f9zny, c*7ty k yspu+s,rom the charged rod will be charged

  Sphere A carries a net positive chasdzj r iha133-;gpz;h rge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched-i;rzp3 h1ahsj3z; gd with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivej2c*/wv 63jk2 wpcjrcly?

  An originally neutral electroscope,om-p 1k(kuy e is briefly touched with a positively charged glass rod. The electroscopeuo 1kp,-myk (e

  An originally neutral electroscope is grounded bw (u/idcvm4 z.0r/ e 3q/rsluyriefly while a positively charged glass rod is held near it. Ar.ey /4v(0lsz cmudrqiw/u/ 3fter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the l a8 e-(jr t7(3oquuwjj.z y uuph+o/4neaves separate. Then a negative object is brought near th .no4y(u q-w78pro/ u eutuja hj(z+j3e electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed o na2o.q ( 0mjk8sj2o z)kv9chin 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 the negative object. At no time does either ball to 92ch2 ao0ki8.vz)j j( ksqmonuch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constant y bi,hql*plf.hs+ c+uv/ :b9fz+bz)w$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largj,g*.n 9g) qooktbej2ju n;qj(tjj+.er in magnitude than the second chargeu) j2.je,jn ng9+o*qqj(gktjb;. ot j .

  Sphere A carries a net charge and sphere B is neut,5d-7ci h u (.uprk nfj:fwnx:ral. They are placed near each other on an insulated table. Which statem h:-kufc5j,w7pdr n u nfx(i.:ent best describes the electrostatic force between them?

  Two charged objects attract each oth 7.uamy*a rs,;jknw, jer with a certain force. If the charges on both objects ay,jnawumj;ks7r. *,a re doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mut/vxx*p nw8+o0vrnea ))dkgt2nof9l (ual attractive forces of F on each other. If the charges are separated by a distance of 2*f+8vn xknt g0drpw9xl)ne /vo a()o d/3, what are the new mutual forces?

  Two charged objects attract each other with a force98e7 nf5ahces/:i ) a8e66yilixj vuy F. What happens to the force b98ce)ijyhas/8fui:5en y a67vil6 xeetween 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 equal to

  An electron and a proton are separataj(1mzbvu : y9ed by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second elz1 muv(:ba9 yjectron is placed next to the first electron?

  An electron and a proton are se6j3 u)+s)b8g6ork( nxmhe rk dparated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the prk( rjg) n68oh 6mxu eks+rb3)doton?

  An electron and a proton are separated by a distance of 1.0 m. What happ/8v sty z9y2rrx k5y1jens to the size of the force on the proton if the electron is moved 0.50 m closer 9t k2y8/r1rzvjsy5 xy to the proton?

  A point charge of +Q is placed at the center of a square. When a sp-hk ,ag3 u7 *4zyftcdodkx8, econd 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 acting on the posit up k g*c4z7hd-k 8,xf3yad,toive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an eqzq5yz;n3xx/ ruilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an elxxrnz;/ 3q5 yzectrostatic 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 vectoywirny6.g wzul :8-fa ,4at5 lr?

  At twice the distance from a poi9iht )4llwf1wdmq,g4cr4l+ka3 j ka*nt charge, the strength of the electric field

  Is it possible to have a zero electric field valueaw g6;6l+f wl6l j0doh2w)zr x between a negative and positive charge along the line jo6;l26+zxrj lf)hold w0wwg 6aining the two charges?

  Is it possible to hajl+7om u ,e;zr6 l7ngtve a zero electric field value between two positive charges along the line joining the two cha6zm ,llu;+o j7get 7nrrges?

  Electric field lines near psiqk 2gy 5x;qheg7i1n6 btive point charges

  The electric field s.b4 gw+s cy.bizs;;vi hown

  Can electric field lines indqjxuw3c lvn8/s j:gqz,* :w3tersect in free space?

  A solid block of metal in electrostatic equi:pn p* ,zgsvguk6ote1l ,v (,vlibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's6gvu:o,k ,ng vlt*ve ,s(pz p1 interior.

  If a solid metal sphere and a hollow metal sphere of equal diam khmh( o4+3mwieters are each given the same charge, the electric field (E) midway between the(m +h ki3wh4mo center and the surface is

  A cubic block of aluminum rest:pe9gmk2kb gc+b;l q-s on a wooden table in a region where a uniform electlp k;2bcb9+:kgegq- mric field 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 agi(pbh-ri+c ;73md s yl q6dj,n electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundwhc ktg,g9 ,p7ed. As compared to the case without the hollow sphere, the electric field at a point directl,h7,9ckg p twgy above the hollow sphere has

State three properties +a.bi-7rx rtg of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron ,twaq/+pn1paj l(iw2zr hz*er o6o rp0 ; q9*tis $e = -1.6 \times 10^{-19} \; C$. 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. Hguwgcebd -3-t0z)n(r12 h idd)rd gf7ow many more protons than eleci2 )ezhn3dddr0-dcgfwtr1) b7 ( -ugg trons does this piece of plastic have?

  What is the charge on 1 kg o kvatphq5521 bvq2 ;tyf protons?

  An atomic nucleus has a charge oi rsuu7,935biym v g.vf $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated b9)k my bsd77yq)s l :d,siy(dfy 1.5 cm, have charge values of 2.0 and -4.0 mC, respect) d:d 9 kbs7i,fs7qmy(sy dyl)ively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, andq6n d8ysigkc 71a 58am the force between them is 1.0 N. What 51n8g isy6 8q7 cdkamais the magnitude of the second charge?

  Two 1.0-C charges have a force between s 3pfkl/ /d4hvn2cfi+them of 1.0 N. How far apart are they?

  The force between a : 6wf;hefnay1j4 cg ft 9j:ze+$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, ini/-b5*l wyvyvbtially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between themy5-bl*wvvyb/ ?

  Three identical point charges of 2.0 mC are placed on the x-axil -od3lm3a2glcb 8qp6s. The first charge is at the origin, the second to the right at x = 50 cm, and the third is dollb pal3gm-6 83cq2at 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 the x-axisvqi5q 4l;mos ih,y: a0. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, andsi0vh; ,yq imqlo:45a +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 located at the following positions uwi6auw,yoy7nd6k *( , lld/l: 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 forcy,dli lod wul 7u*66ynw(a,k/e on the 3.00-mC charge?

  A point charge of +Q is placim(a tj(a(d cgb;;)ombst ; 6ved 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 magnitude of the force that acts on the center charge ()i;mao( 6dbts c (;;vgbtamjif 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 (e, p(oaz4v tc8 0*cjnb0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charge?pte 8z c*oj av(cn0b4,

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m) ju/3yey:*7 a tmko4ou; Q3 = 5.0 nC is at (0, 0). What is the direction of the net force ona *teoj/ umku7 yy43:o the 5.0 nC charge?

  Three identical charges of 3.0 mC are p)r 7wub 4moczsc8q )3placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatico 4p )rbczq87)3wmu sc force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separatetmyxuz:0d3hd2s7 k lpo 5g-r/d 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 force actingydpshl3x57 dm0r/ otz:g -ku2 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 on,2zf bvy1guq fky4 1z+ p1sc1d the x-axis can a third charge be placed so the1d11yzkpzu4g 2,c b1fy qs+fv net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wherehskq,(diy 36tl +8mek can a t(ekt 6ms3qdiy8+l h ,khird positive charge +q be placed so that the force on it is zero?

  A copper penny has a masp,r4cl +jy , csn2z6qts 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 force of gravw r :3.qkqfw ,u.elj:y4l dw5eity by the attraction of a fixed proton some distance above it. How far above the electron is the protwj5.:llfq q e,r.k edyw4:wu 3on?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thr;pjzt0c/ p,+ol5gwz)xgoi1 o eads which are 30 cm long. Both are given identical char, l1/5 oip ow;j0tpzxz cgg+o)ges, 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. Wh rt;mrui4j/ / vk7*lvay: ,yclat is the magnitude of the electric field at a dista,vy4tclv j: rr/lyi*am; /u7knce of 1.0 m from the nucleus?

  What are the magnitude ang*rh2i3-dh+ z7j kqiu d direction of the electric field at a distance of 1.50 m from a 50.0-nC +r3 gi h hjd2uk-*7qzi charge?

  A 5.0-C charge is 10 m from a small test cwad fvxe 37fko o/x-9;harge. What is the magnitude of the electric field at the location of the test chaew v9 ;-d7xfo/oxka3f rge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of thi)xzh + xn8 t3bj(b*xre electbi 8tx(h xnz 3jrb*+)xric field?

  A 5.0-C charge is 10 if5wak3. w8b qm 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 test chaw58f.abik q3w rge?

  Two point charges each have a value of 3.0 C andgsp(.inll *s0 are separated by a distance of 4.0 m. What is the electric field at a p0(l.gnss li*point midway between the two charges?

  A 5.0-mC charge is plac4bmtx 2 w)g6;ziix )eyed at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm ma ibm4 t)6zxxy;wgi2)erk?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and g 9k pb0xzb6+xa -4.0 mC charge is placed at the 50 cm pbxx 0z9kgb+6mark. 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 a-ab4ym3y/+h-h7sacoaxone/g r it6tn3;b 0 bt x = 0 and x = 0.20 m. What +eh0nymya ib r3/4aoac-bbth;/3 xon67 -sg tis the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three ch.39fhd ihl8 aorners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squa h8lf9ih3h.dare.

  Consider a square which is 1.0 m on a pw:yb 61lkj pna.s1- pside. Charges are placed at the corners of the square as follows :nkspy1 jwa. -lp6pb1: +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 5.0 mC when it is placed in a ungkc ac85ui k )*a)7qjs9hmwkn91f 4idiform electric field. What is the magnitude of this ele7wkkdu ci)9)a1jmnf48h gasi5 q*k9cctric field?

  A particle with a charge of 4.0 mC ji g0s-3 ft5.haba7u uhas 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 6000hkg 5eg6 zb6 visdeutl(gy(3,ti:k2. N/C pointing downward. What charge must be placed on the ball for it to be suspendee5 t(3y b( ,kgi.s ul66tdgg:ez 2ivkhd?

  A foam ball of mass 0.150 g carries ,rok +jz.,3drtcpvk( a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against t,rk3j ,pz.vrk+(dtc ohe 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 is the marrm rc* 0/i:dbgnitude of the electric field d:i*/0r bmrrc5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 )8vgjf mo0es4 mC. What is the electric field 8f gsevmo0j4)6.0 cm from the center of the sphere?