State the law of conservation of electric charq lhgbdr2 )0a ;vd)hq7vuv8 l1ge.

  Is it possible for two negative charges to attract each oth6d0ev hbi8b21 qkf g;her?

  Is it possible for a positive and a negative charge to /iwb;rkiw u+;attract each other?

  A glass rod is rubbed with a piece of silk. Duringntw +3 eq. b9u7zelhepbg7q 33 the process the glass rod acquires a pos7ueb9t3ee+ bnp. 3 3gql 7wqhzitive charge and the silk

  A proton carries a

  The model of the atom shows a9oh81i*c i:7m 3n.xhngirn ns

  A neutral atom always bg) 34paxq q3qxtx6-hhas

  An atom has more electrons than protons. Theqdt7d cxu765mg ,)jyxyp;. i 8n2 cpqal+3x ob atom is

  Materials in which the electrons are bound very tightly to the nuclei are rehxb) ibf4)hm+7(o qsfferred tfs 7hh)xqm( b+o)bfi4o as

  Materials in which the electronm0u68-m.nlic m g/77vefh 6fusrl+kzs are bound very loosely to the nuclei and can movelg/-surcz76+7m vmhk08 uf elfi m6n. about freely within the material are referred to as

  A negatively charged rod is brought near one en+m/co vq w /hbf7)b-erd of an uncharged metal bar. The end of the metal bar f/hb)o /bc r+-7e wmqfvarthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They1 kk4d4zw )axy are placed near each other on an insulated table. S w4d kk4)x1yazphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged ro, jv9q-xliw3-n 4.banz du *mgd charge an electroscope positively?

  An originally neutral electroscope is briefly touche(ct 8-umcq hh uxm10;vd with a positively charged glass rod. The elect-mmxc8uv;h 0 1ch(uqtroscope

  An originally neutral electroscope is grouqp+;t ccp 7s4fypd mq,g7/mo5 nded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electromqcpg;s pyf75,p c q7t+4dm/oscope

  A positive object touches a ne(fgi z2j:) v8vn/x .u0qrfhrz utral electroscope, and the leaves separate. Then a negative object is brought nifz(8qr)vj fv/u2 .r0:nh xgz ear the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutb2:nhnrai k nmt;2- r;(*xldkral 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 negativen(tr m 2h ;k-b;dl*:n rk2nxia object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constant bls-;h9 6sbb-iz 8f jb$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distana( 6hn9fm4 ysyce d. The first charge is larger in magnitude than the second charge.a9y h6nyms4f(

  Sphere A carries a net c gq37g0p z ovv9cdf1cvvh7o84 harge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electro c08v3 v7hdo97zc4vgv gpfq1ostatic force between them?

  Two charged objects m( rqfa70kfb-5 v)e ehattract each other with a certain force. If the charges on both objects are doubled with no change in separation, the force kbvff5) aqe (7h-rem0 between them

  Two charges are separated by a dis o0)i*rzpl 2mazn9k2 mzj dffc.f8 2*ctance d and exert mutual attractive forces of F on each other. If the charges are separai *o 9z82*mkp l2cnm0z2fdjf c a.zrf)ted by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a -u:v1zjvwh)kr2 yjd. f d(p n.force F. What happens to the force between them if one cvynvd j uf: (-krd2j)w1zp.h.harge 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 separated by a die i4r60 +v+be8 mmqe 21zu;kvs-xh eosstance of 1.0 m. What happens to the magnitude of the force on the proton ifxbvq2e4e +u6mhs0+ e8 vmor; zie-s 1k a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Wh.zybuswe8- ny+8*pegb +n 6f nat happens to the magnitude of the force on the firn.6b bsz8eg* +fu e nw+yp-y8nst 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 happe:uk++ , u:9igdyc5k d+ibpzxl ns to the size ofc,d+ y5:9b++kdpzkliu:gxu i the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center q0as 7zccc/v 9of 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 the positive charge at the squarcqcazs v9 0/7ce'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 centroid of an equilaterdrt,8 f sjbq95kc/+ wwal triangle. When a second charge o5cf swrk+b ,w8/j9d tqf +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 r5wusa5g2 xizrc(p, +pd85x l not a vector?

  At twice the distance from a point charge, the strength of the e*39tqbas6z (zrwz-;nkuth c+9uso: zlectric field

  Is it possible to have a zero electric fieltup8n cb,7 k0qd value between a negative and positive charge along the lqk,0t p78ucbnine joining the two charges?

  Is it possible to have a zero elbyo7-kfe0 rlxsl0; 2t k 08kzbectric field value between two positive charges alokbe2 lo0b s7ykzk8 x00rt;- lfng the line joining the two charges?

  Electric field lines near psitive point chars:i2u+*thcjq-1n; , lm odql* jc -bxrges

  The electric field showg4grmw7;1vg n n

  Can electric field lines intersect in free spacecn h;( pzvj4j*?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elec apd(0-upr qkvwb6(; gx:8uxptric field. Give a statement concerning the electrp0kgq- ba ;(p(8w :6xprvuuxdic field in the block's interior.

  If a solid metal sphere and a -n qayq a7n-r5hollow metal sphere of equal diameters are each gir7nq ya 5q-na-ven the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a rekv5m2wf0 lmfkw0*ns(gion where a uniform electric field is directed straight upward. What can be sai w0* (k2vm0flkwsn5 fmd concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric ,p elfcjl lb 6ip: c8il*yr+7*charge

  A positive point charge is enclosed in a hollow metallic si kc 7p/6d6 pgq0j2mihoo,h 6ophere that is grounded. As compared to the case withogood2omijh6cqhp/6, i67k 0p ut the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium3un 3 pxe pg8*:lqkne3.

State Gauss's law.

  The charge carried by ol7eevnayj08m s5i c :3ne 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;etg zm9 t41cvi .08vgttj(kj many more protons than electrons does tt81j;j t0 gegt mtc(9i k4.vvzhis piece of plastic have?

  What is the charge on 1 kg 9 4ulm-jw ninfeoj0p4l xw;) ub0 /9zqof protons?

  An atomic nucleus has a z 6b9b*u6ryl ycharge 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 valuea5w8l)s 6m,c zu *px p7macdp5s of 2.0 and -4.0 mC, respectively. What is the magnitudu,8az cp)m a md7*l cpx5ws6p5e of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them 3+/s vy iqcibpeun9(;is 1.0 N. What is the magnitude of the sivnp ;+cbuq/s3 i(9e yecond charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are t,6sn q;q(r2 ua)xpy bs.fnr :ihey?

  The force between a .eol g5 /pjdr6$30 \; mC$ 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 the /mv+m uq+sql)y are moved to a new separation of 8.0 cm, what is the electric ummsl) v+q/q +force between them?

  Three identical point charges of 2.0 mC are placed on tg,vi ;l 2,/g 4k,fqypvexdr/l he x-axis. The first charge is at the origin, ;egqlvd , i4,gx/ y/vfk,r2lp 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 electrostatic force which acts on the charge at the origin?

  Three point charges are placed on thf9mepcf-nrwn. u+, o01cpk wml-d ;*de 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 electrost+dpw f.,w-ou*n ce0l19kdnmf c ;mrp- atic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x = fu 9p,gmzy-s8*z: fdh ta8; ww1.00 m; Q2 = 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 char:z8h f f-,p*wz wu t8m;sydg9age?

  A point charge of +Q is :qujt me. l(c3.k3ru cplaced 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 if a third charge of -Q is q umj ru:.3cket .3(clplaced at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1c8 pvre:jb+/-hx c9 li.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is ate9 jc:/8b irlh-pc+ vx (0, 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, 0.10 m); Q3 = 5.0 nC is atix3) 6u*c y8af+fcdy r (0, 0). What f6uyf+r d)ai*x y8cc3is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verti7qn/7ou ogx 4zces of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any 7xugo q n7o4z/one of the charges?

  Consider point chargq0f,z )w- ee2)id-easele qe2 es of +Q and +4Q, which are separated 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 acting on it would eqw2ie)q-l s0)d-2e, feaez e be zero?

  A +3.0-C charge is at the orktb)1gb56mtmx6 tr ,wigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis cab6tttbx 1 5k6,)m wrgmn a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. -+yj rw/hzi8mmh a:y. Where can a third positi hai- ym8:.jm/+yrwhz ve charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tota5vf dq:.1goa( zxx;mcl 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 +p4ci(8ti j5wntanr(of gravity by the attraction of a fixed protnpr i+n8 a(wc5(jt i4ton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a comm28n dd t(*s)b;.uh;uwc jl 0dqj8n tjson point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion f.2s0tucn; l)dq ;jd 8wush*8 tb(n jjdorces 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 of the electrqf33xji)t1egq )kf)w i1f lg; ic field at a distance of 1.0 m froi g f) k);q1tlfw3gei1)3jqxfm the nucleus?

  What are the magnitude and direction of the electric fie n*u)vug(q8bp/t35q7h d k nnuld at a distance of 1.50 m from a 50.0-nC 7ud(u v3ngunhkqb8p 5 qn/)t* charge?

  A 5.0-C charge is 10 m from a smaeagdcw r fo:+zwz* c .-q;80sbll test charge. What is the magnitude of the electric field at ther se ;q08 dc f.w+bzw:*zacgo- location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What*j1 fnvpy)i x:qemo--jap 0o ds.e68t is the direction of the electricmfv6-oj-yps 0)8xj . te ean1op*i:q d field?

  A 5.0-C charge is 10 m from a4wea5lb swq.hzz -7 ,x small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge?.5 qbzxs wla-hw7e4, z

  Two point charges each have a value of 3.0 C and are separated o*2i1ubd 8 clw2 +asf a2lk+xpby a distance of 4.0 m. What is the electric field at a point midway between the two charw 2* balsufoi+18lc k2+2dpxa ges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charggrcfi kq:( h(;e is placed at the 50 cm mark. What is the ele:irckf;qg( (h ctric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a me0 echzj6f/aozf qm16k w14s( wter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two chamz1oc6s qkf/a6w (41 wfjzh 0erges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20p p9gtmm );7rc m. What is the magnitude of the electric field at the point midway betweentp9rm )7gpm c; them?

  Three 3.0 mC charges are at the three corners of a squa(z*2qx 5t ipgz1v,lm sr4hgp2re of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the elects vrzm(14 it2l,h 52qg*xpgpzric field at the center of the square.

  Consider a square which is 1.0 m o.ni pn:f/j h3bn a side. Charges are placed at the corners 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 m/:nph.n ib3 fjC 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 p76vz lp 7egj;hlaced in a uniform electr v67g7lphz; ejic field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a masb1pu ((3yjrels 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 60+o9q lallb 2tff: s*,k00 N/C pointing downward. What charge must be p9l,o2+ :sqlb*ltfkf alaced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball i lhuks1f,4a6;h2z vwsx7 m.phs placed inside a uniform electric field, and is suspended against the force of gravity.h,ph kvm2ws 6l.h4; f1 s7uazx What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm car ;z/ 5du/4dd et.tp *zwle/ 14csnmsbrries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's sum t /4s1re/dpcuzedd * bnl.s4tw5 z;/rface?

  A metal sphere of radjr vx.dv* 43waius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the centeraxv d3wjr4.v * of the sphere?