State the law of conservation of electric cha dq n ,7cm:9/ivve/rrvrge.

  Is it possible for two negative char9d9d6,yexmd7 * 8: xvj)b5vkqoqt cahges to attract each other?

  Is it possible for a positive and a negative charge to attrafw.s/kh (0a l+cqj+ nqct each other?

  A glass rod is rubbed with a piece of silk. During the pg85 ))suq(v*sn.b0r xwpneb crocess the glass rod acquires a positive csbcrsg*.bv5wqxu) ) n08 pne(harge and the silk

  A proton carries a

  The model of the ato l5gazz1 ;e9jrm shows a

  A neutral atom always hasnvgcioac)u7 ;n6;ss 1

  An atom has more electryj9 + nxixop0:bv-3afp c w/;jons than protons. The atom is

  Materials in which the electrons areo tu09hn.q,lejg7r9w bound very tightly to the nuclei are referred7ql 9no jw.erguh9t, 0 to as

  Materials in which the electrons are bound very loosely to the hm5vo bd;8e))1tlkyo nuclei and can move about freely within the material are refv)hl ) kbym5dt8; eo1oerred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Thyu 70)kw4kqkve end of the metal bar farthest from the charged rod willuy0kv7 kw4k )q be charged

  Sphere A carries a net positive chaf/5o).uh uqz arge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statem qz)uu/a5 f.ohent is correct?

  How can a negatively charged rod char,rx3u8z1u.jv s (b dlvge an electroscope positively?

  An originally neutral electroscope is briemcsbs d:9wz7ju;8vb 9/auu5r7 j ;zk efly touched with a positively charged /7j99 vmbb;u ;:js8zcaz u sue5w7kdrglass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a l *ibg v50p;xzpositively charged glass rod is held near it. A; lzix0gp*vb 5fter the glass rod is removed, the electroscope

  A positive object touches a neutral electu:17q-f:t zv* spavl4ras f *groscope, and the leaves separate. Then a n* tuz7:r : fvgq1pv4aa*-lssfegative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placese5(mmsctvu6qr(3g zwn /;u0d 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 the negative object. At no time does either ball 0wuu/ ((6czmsvnr q3g;sme 5t touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of thd,e a * aqqd+wjhl2,k)e Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by0/uhvfnt g4z-) 2sc,e *g7yjg2lfhvh a distance d. The first charge is larger in mah2hgc s4zghu,j2 -*v7y)0 ngtf/efv l gnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are p.(bg (9xv5wh,nnqw0v lak-y g vi3n +ilaced near each other on an insulated table. Which statement best describes the electrostatic force betweex,(kn(yvivga-l3 +bv q5 0w9nwnhg i.n them?

  Two charged objects attract each other with a certain.jec9 d -,1dq qyhotn9 force. If the charges on both objects are doubled with no change in sepae.tnd c-,d91qy oj9hqration, the force between them

  Two charges are separated by a distance d and exert mutual attract. 2;jtkh cybhx; f4sx*le4 uv4ive forces of F on each other. Ifcsku*ty jlxf;ve x4h;b4. 2 h4 the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other+qhg;b-im6l- aq t,qd with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance b tl+b hq-da6qiq,;-gm etween their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separatewnv8 ix1jjx(2 sb6l.fjn9b :id 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 tj.jb9si1xjnnfbvx(i 8wl : 26o the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What zcj ;z*hfm7 */csys 6thappens to the magnitudehm/jzf*;cz*cys7 6ts of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton2 ) gda rzfc*lo2jq)s0 are separated by a distance of 1.0 m. What happens to the size of the force on the proton if thefr2* )0ac o g)jqslzd2 electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a secilvl aco/ 06ug0nnpe2gto)- ecvs6s v*m1 4y 0ond 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 positive charge at the center of the square?e6uys6 1-c0te *o0gm/nlgs0 v onva 4i) c2lvp

  A point charge of +Q is placed at the c 7 1-fe)23l5sqfhap mxi/qivbentroid of an equilateral triangle. When a second charge of +Q is placed at one of the triifeqpm15la-qbh 2fx)v s3 7 /iangle'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 vectorqz7bvgf0i5uxg. 1 du 2?

  At twice the distancp)k6 *jy7 0*ogq wfinne from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and p.o0r +ln eiqbkq +*g0wy-of1e ositive charge along the line joi0 inqlryfqg.-+ o k+b 0*1oweening the two charges?

  Is it possible to have a zer;vlx jmx/l a5 z-yi4:jo electric field value between two positive charges along tvz /am illy;:xj5 j4-xhe line joining the two charges?

  Electric field lines nea4 gcz+*djfq9i:oshty2)+mc5hh b3a f r psitive point charges

  The electric field shownpj s ,g4qc kvx-5+gdi6

  Can electric field lines intersect in ;pvvn. ih ju:*free space?

  A solid block of met*(znoit ):rs yal in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the bl*zt()r:oins y ock's interior.

  If a solid metal sphere and a hollow metal sphere of frffrgv 7bkj,,u-2n w6 2t;(vilpdx-equal diameters are each given the same charge, the electric field (E) mgk f,-;l7urnjpd2 (b2tfvx 6rfw,vi-idway between the center and the surface is

  A cubic block of aluminum rests on a woobun6qn8 t3u)z den table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfac6 n u3qu)tb8zne?

  If a conductor is in electrostatic equilibrium near an electric cqi)5 9k4 usjjq ei6kq3harge

  A positive point charge is enclose i/q cy96gq/mj i+9ao2tzmvu5d in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere haay69o u9tqqmiv5mgzc + 2/i/js

State three properties of q y1yavy4sg kd ,e(hogr. .+b6conductors in static equilibrium.

State Gauss's law.

  The charge carried bymokn ;yqksdn 4iox:r 1+0jnn q8qnc/ .a op56, 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 many more pro78 yux4vi3uj nk0ue0 jtons than electrons does this piecn e7iuuj4u8vj 030yxke of plastic have?

  What is the charge on 1 kg of protons?fj +)lho a/f9u

  An atomic nucleus has a chargelvs)rnp/ quul- :m8s 6 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 2.0jcyrt a( (63pr and -4.0 mC, respectively. What is the magnitude of the electric foa (j6c(tr3rp yrce between them?

  A 1.0-C charge is 15 m from a second charge, and the force between t 6 -on5e, + g.) iji;hhqsqdlppmaqb()hem is 1.0 N. What is the magnitude of h)5,iqepgm-d.;pqon(h )s6+iq j bal the second charge?

  Two 1.0-C charges have a force 2+16p0qyzv8 sjpxhei.htr2a between them of 1.0 N. How far apart are they?

  The force between a conb52 s7** wp6kyjn b$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experisdq)c 14jue8fence a 1.0-N force. If they ar 4fj)8qedc us1e moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC arf k3sf6p,pk, re placed on the x-axis. The first charge is at the origin, the second to the right atkfp6k3 ,fr, sp x = 50 cm, 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 thb i9y; hs-2teie x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the rig-b ei9h2ist;y ht 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 located at the following positions: Q1 7 wl+w;axizg (= 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.0 g+z wl(xa7wi;0 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, v)op gv och ql:*rwq(5*j)au -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 ac 5uv)-qp(jr*o* gvwq :cao)lhts on the positive charge 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,m+vleg j31za 11rw g2a 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charge12gam+1v3 lr1wage jz?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 mfep1,:;xuk21slf3j r*x f fc m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on,2;f*x r3l1kffxe:sp c mfuj1 the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vert lu iguh/b487lices 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 chaih 7 ugb4ul8/lrges?

  Consider point charges ofj h8,(vb;2b7 xv bltak +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would ibh( vbk7j ;8,t2abx vlt 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 charge is at x = 4.0 m. Whk0a0vl: 2(8jp( oqeoiy53qsm xj3n zhere on the x0o3ys:qxmzl phvj(8q3j k 2ie0(o5an -axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin f)e;if mh hswobp*f*ol2b4 n5x;7nu-and charge -q is placed at x = 2a. Where can a third positive cha;*fsh*h- )l72n ffwb5 b;moxipu4on erge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. m)w-m1vr1kgo 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 by the attrgm3 6q ihyd)t+ ce44)v6iyo ebaction of a fixed proton some distance ime))4 3h4v 6g6ybdeti+qcyo above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a ahqdw;/ hce/el*;vz9 common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repw zl/ ee;ch/ q*vda9h;ulsion 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 the magnitude h 776oj7hb pm4v awlv2of the electric field at a distance of 1.0 m from vjhbmh727 o7l6w 4p avthe nucleus?

  What are the magnitude and direction of the electric field at a distance of 0ag+b. ow7e)bd laq6l1.50 m from 6dwb+) q. bgo7lae0laa 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Whsb e9ze(jkb1 (at is the magnitude of the electric field at bbe e(9(zjs k1the location of the test charge?

  A 5.0-C charge is 10 m fromy;*fjiv :r7h.7t ;nuln1ugx i a small test charge. What is the direction of the electric v.iuhu tgynf;:rxl j;7n1*7 ifield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnvvhet a4dn ;tj k64)-xitude of the force experienced by a 1.0 nC charge placed at4kajh;-v vxe6d4n) t t the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance of 6bzckjs4 eds6 .ij3scal k:q)6-+mmw4.0 m. What is the electric field at a point midwaylzi3j6.+ :) c-bskwjcskaq6s6d4emm between the two charges?

  A 5.0-mC charge is placed 0nvl6,0rog6mar1jtugwv j7 d: bxkb .ze.z+9 at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm markzm7 6gbro d01,kvelj 6:0uxjrva+9wt g.bz.n. 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 st5t;z uoa:0or8vxks5 kick and a -4.0 mC charge is placoa s;8o0v 5:urtkk5xz ed at the 50 cm mark. 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 x9sbrsk r8) 6r)p04vo+lcl0jqn *lf ky = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betweenksf*4 l+n)bcly6 )qlosk 0r9vrj8 pr0 them?

  Three 3.0 mC charges are at the three corners of a sq4fugf90ts g6t uare 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 square.6g94 uf0tftsg

  Consider a square which is 1.0 m on a side. Charges are placed at the corzpx5et*t5v-v h3o,jb ners 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 ejvzhote ,bx *5- 3vp5tlectric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC whenkx7+wf,9mxgf 5 oa g2e it is placed in a uniform electric field. What is the mg+a52x, ffg7mexwo k 9agnitude of this electric field?

  A particle with a charge of(ciyw/ro :r h,o 41,loa;h xsb 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 mas-o7fv9gc5pzl/d)4l ml o;eimyl)g *z s 0.120 g is placed in an electric field of 6000 N/C pointing downward. What vmom7 e) *zd)-fl9c/;plzgli 5go y4l charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 gy5)t p4ca1.dwmqrg.f3(dgy 5,pl wfv carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and directionp53(w v5 d.c pyy,l4m)ggt fr1aw.f dq of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Whatya, /2aojik 7 ix+.qc4daq)st is the magnitude of the electric field 5.0 cm from the sphere's)sa +jc iqa/y t 7k.4q,x2adio surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electri -(q yo8wzq:); tgtvj2mv7wp tc field 6.0 cm from the cemyw- toqqv) gj;(8:tpzv tw72nter of the sphere?