State the law of conservation of electric cha v4pfdj ar6y:t zm/7o651 ph/o9tcni urge.

  Is it possible for two negative charges j z9 y diwnhpcu:;;j8;to attract each other?

  Is it possible for a positive and a negative ctrfu h,)y4cfv t;h.id()w.f, os* ea fharge to attract each other?

  A glass rod is rubbed with a piece of 0ming 2s+z)owbs:: utsilk. During the process the glass rod acquires a positbw: +tguo2 0)zsn:si mive charge and the silk

  A proton carries a

  The model of the atom shows9ndfm zba+-)xw v4j2b8v 1gj t a

  A neutral atom always ha8z ,) z1lhyyew e.8bmyr( cq oh)t;i vh88c5hcs

  An atom has more electrons than protons. Trcmjbe * e.+l;he atom is

  Materials in which the electrons ar v1qkqhmer3 5-u32l;cq, uwrje bound very tightly to the nuclei are referred tk1ve uc ;q3 rqmw2l-q,53hu rjo as

  Materials in which the electrons are bound very loosely to the nucl*lw i *vot.ov.t7-l5a zf8xv oei and can move ab.vzt oxa*tvl*5 w7.olo vif-8out freely within the material are referred to as

  A negatively charged rovyn+0h-z3amb hxe 6u5d is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chznub50+v3y- xm ah6eharged

  Sphere A carries a net positive .-qx a-e5if)hi ad w7tcharge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is7d tfeqawai)-.xh i5- grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope pog(8 + +ehaxpvrsitively?

  An originally neutral el,dj(m/fltmg. ectroscope is briefly touched with a positively charged glass rod. The egj ltf/(.mm d,lectroscope

  An originally neutral electroscope is grounded briefly while a positively chargebj cqn6vq4 o)ttq3o 84d glass rod is held near it. After the glass rod is4ov4q6 q8tt3c qn) bjo removed, the electroscope

  A positive object touches a neutjpj wf28n- qyip35d w*ral electroscope, and the leaves separate. Then a negative object is brought near the electro w2-jifnjw q35y8p *dpscope, but does not touch it. What happens to the leaves?

  A large negatively chargyy3 )6rw c/dimed object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metalr3yc m /iy6dw)lic 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 the Coulomb consu+nu); tudx -cw1knoh95 ,yvd xsu,+vtant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is lar y)8ag xas2*dbger in magnitude than xa8*d ) a2sgbythe second charge.

  Sphere A carries a net charge and sphere B is neun; ,mnjzkx e,/tral. They are placed near each other on a,n ,xmez k/n;jn insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each othezv,ulriaj;ia zkv3d(/wg/yp ;*237me o6v kv r with a certain force. If the charges on ;jrdi ik v(evw26,3alypv uz; /vg*7/a 3mokzboth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractivem b k,mgl -r7pb,po*e7 forces of F on each other. If the charges are separa7*mrklbop , pebg7m-,ted by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What hapo469 tcr z;twapens to the force between them if one charge is ;6t acorz 9tw4doubled, 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 dista+z n;j92n ky+klb *(6xk o)mfq+qjrsrnce of 1.0 m. What happens to the magnitudej ( qkr+q)l fsk*o+kxy9+rbjzn2;n 6m of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happentx8)q upex l(q-4c)xrs to the magnitude of the force lx(q8)4 c ue-) rpxtxqon 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. What happz7n* ovehsv;8ens to the sieh* zvnvso8 ;7ze of 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 of a square. Whe0dvg p(m4c8yd wrd55/ hltvv6n a second point charge of -Q is pdgpvddh 4 5 ltwc( 6vv0yrm5/8laced 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?

  A point charge of +Q i8vwgc r stt*0si4w,a60 c :9gkz- hotus placed at the centroid of an equilateral triangle. When a second charge of +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 *ugtci rcavs06z0w -tk9h8: gw4s o,tvertices?

  Which of the following is notw aexal0d -t;kxf ++/cwl,wg9 a vector?

  At twice the distance from a point charge, tge0*fm*urk q9 he strength of the electric field

  Is it possible to have a zero electric field value between a negati,)lserd0v lq+ 4k,b kcve and positive chargrecl kl+4 )s0 ,bkdv,qe along the line joining the two charges?

  Is it possible to have a zero electric field value bazoa/5.2 bgrz hz -yr-etween two positive charges along the line joining the two chaa-z gzho-.b5r r2z/yarges?

  Electric field lines near psitive 8+)piw-pa/ th tn+hespoint charges

  The electric field se4vrvwzz; . r g9fx.2fhown

  Can electric field lines intersect in fre t 5i(hc)ygr3 d1bp5.)h fkhsyw6;otm:c:qxse space?

  A solid block of metal in electrostatic equilibrium is pnmk(u(h 907vi (y3w o akn0zgpbfo/+z1 t;vtalaced in a uniform electric field. Give a statement conckv+0k by(1 ma09vp (3nahzog7wizuf/(tnt o; erning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameteak( tvd43kk l( *lmb(vrs are each given the same charge, the electric field (E) midway b (*kk4d tkma3vb(vl(l etween the center and the surface is

  A cubic block of aluminum rests on a +inr2mna t13gqvr l.f o8ll ++wooden table in a region where a uniform electric field is directed straight upward. What can be said 8i +lvqlrn1 gor .f +2n3ltma+concerning the charge on the block's top surface?

  If a conductor is in electrostatpm2pahu7 z//nic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow me p(aw5qugpraq1f5 1e 2tallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly ab(p55gqa fqweu 1a1rp2ove the hollow sphere has

State three properties of conductpsz4d/t2o s3k- x1kf9rxb fp5jrs4y 4ors in static equilibrium.

State Gauss's law.

  The charge carried by one electron j06kjh f20ol72 lm8bt qbxx,pis $e = -1.6 \times 10^{-19} \; C$. 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. Hoxvq)nx 61m(d7ba i b-; nff7osw many more protons than electafdnxx7fv )b16;7mnoq s-ib (rons does this piece of plastic have?

  What is the charge o h4o6mrt wca34q)j l-mn 1 kg of protons?

  An atomic nucleus has a charge oq/5 6 vrmujx/m7p l7ts-ou(xtf $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, ha g ql4 j 7jrt;mq(0sveyip+-,wve charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between them?qem;(j0,+j- pilq stwrv 4gy7

  A 1.0-C charge is 15 m from a second charge, and the for*kunsi6h.d4 0jp :yxx ce between them is 1.0 N. Whatdxn *4:k hyxu ij.06ps is the magnitude of the second charge?

  Two 1.0-C charges havey0v,+dg-s mk y a force between them of 1.0 N. How far apart are they?

  The force between a )6useni w- on ofs(n;0$30 \; mC$ 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 arqu*ksl7m hsckl89r71o ,g y:vf-wr9ke moved to a new separatis mufwo9kvk,rcgl7hlr ky:1-*q8 7 9son of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are pllshbl 0 xd( a5lc2*z5yaced on the x-axis. The first charge is at the origin, the second to the rightd5 2xl (zl5*bsh0yalc 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 the x-axis. A charge of +2.0 mC is vlu9h6k 5 99 m5fnlxwjbl:-k 0zu)jgv placed at the orl blw uu5: f5nm6kz9-xklj99hv0j) gvigin, -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 electrostatic force which acts on the charge at the origin?

  Three point charges f8lircl1kqgm); *c8 dare located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 8lr;1*8cigm lqk dcf)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 d7ppwmvfh cs1fj9 .( l k58ck/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 o1dpjcmsw(. 8 /7klkcp 9fvf 5hf -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, s.u 32raqx kpyeo/ zhbv69q0 80); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net forcehbsv p 9ar 2q3o.6ux z8qky0/e on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC ivqj8q;i*o co- yl7ee 9b- y3,qyww9kjs at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). -y, ejyev q ;ol 7c8j*wo39ky-9qqbiwWhat is the direction of the net force on the 5.0 nC charge?

  Three identical charges op s58 a9*t4 onnyfek2if 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the es8ykan59tp4on *i2 f electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, www+n-y ;rz.a;br4fx k: hpzu 4hich are separated by 3.0 m. At what point, on a line between the two chargrwznurbhfxk4wy4z .;a ;p-+ :es, 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 charge i4:u vmz(kmnu3, fd np47mf*w xs at x = 4.0 m. Where on tv4:kf wm*umdu(n47n3,zx p mfhe x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at osv;m z9se :5 m+gt.nbthe origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that o mbtmg9+:z .ne;sv 5sthe force on it is zero?

  A copper penny has a mass of 3.0 g. A tofw/ c )/71f2gbdxaenx )q7duw tal 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 thv.2czqb1.pce 9h tn3me attraction of a fixed proton some distance above it. How far above the qnme.12c3.9p c vtbzhelectron is the proton?

  Two 0.20-g metal spheres are hung from a ceq0 1)gazwiw2:acu v4c x(a, yh s3ee/ommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostati) aave0xz 1u3e/:4w,chagc siw( qy2 ec 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. cq0f .t,kqmx 9pqu;)7quxht(What is the magnitude of the electric fiq;(uqm)xf0t,.kq hqu9pt 7 cx eld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance +0ovyqyw t6:pof 1.50 m :yypow 6+q tv0from a 50.0-nC charge?

  A 5.0-C charge is 10u8. suky649 a-q j/rnpfr4win m from a small test charge. What is the magnitude of the elr4qw-9.nf i/pknuyu 46sj8 ar ectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small te:oz:ft(r(k zuth/0 k02 vftww st charge. What is the direction of the electr0tokukww0 (zfvh:r( /t2t: fzic field?

  A 5.0-C charge is 10 m from a small test charge. What is vaxu u5( 63fovthe magnitude of the force experienced by a 1.0 nv6uv3 u(o xf5aC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance o/m wvasgac89 3f 4.0 m. What is the electric field at a point midway between the two chargeamvg/w9cs3 8 as?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and avdl)ex/8 q,e6zvg zo, wf.8 ol -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the ,6 ,8qv)ez ldvzeg.oo8w/lfx 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -a;1u ;:/fcp/pgtoy hjpv 8*ka4.0 mC charge is placed at the 50 cm mark. jahga o1//c:8ppt k*;;yu fpvAt what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 m :.d dyji+gbm)C and -7.0 mC are placed at x = 0 and x = 0.20 m. What is d: b+i.)jgmyd the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at thea)u49 rg cc)wr three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the elc)9arw g4cr u)ectric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corseoew 9*3yhzrwd v//;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 thw s /ewdoe9h3vrzy*/;e 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 plahr kig8(u(q 5f0pyts; ced in a uniform electric field. Wfqirh8 5 tp(k(ug ;ys0hat is the magnitude of this electric field?

  A particle with a chaohhpy1etxt +-i-x/m . rge 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 gx 4 (+q(*rvsr-w4rfdt v wbb4c is placed in an electric field of 6000 N/C pointing downward. What charge must be pl4xsc rr qb*rvw(-(4wd vbft4 +aced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Tw28fbhuy 4fr9he ball is placed inside a uniform electric field, and is suspended against r8 bh4y9ffw2uthe 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 mag g(m4 8wzz8*ctqzwk/xnitude of the electric field 5. m8cg(8wt/ zx*w 4zqzk0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a c8( . fbrtnto 461kka,daop ;pkharge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphe t1aoo .ap,tdk;fr8(pk4kbn6 re?