State the law of conservation of electric chb ;tm 8x8a*. yv1ls4qp6 d,sucpz dk2harge.

  Is it possible for two negative charges to attract each gtw53tzm -41nflgnp d rfm 21,other?

  Is it possible for a positive and a negative charge o5npeps :t2-sto attract each other?

  A glass rod is rubbed witn j z/ps oh:a(9yf+q,g+5ay osh a piece of silk. During the process the glass rod acquires a pos+,po s:/+yhyaj 59 aos(qzfng itive charge and the silk

  A proton carries a

  The model of the atom glig/nia+d4cc / c.;eshows a

  A neutral atom always l /hivy*en tk h5i 75x;a49knthas

  An atom has more electrons than 1f8 cb24om rozx/hvw 6protons. The atom is

  Materials in which the electrons are bound very tightw-w(j2- h(dgbgx7n l txr*l lh5 o49edly to the nuclei are referred hng *d4 r7wxh2d-gjb(o(wl - e t5ll9xto as

  Materials in which the electrons are bound very looss-xj5c6 qo7 c6ucuhx 9ely to the nuclei and can move about fre69-uuh5qjcxc x7s6 coely within the material are referred to as

  A negatively charged rod is brought near one end of an unchaecc2kt.aez9;i7s(j(6n a a7 q ra (qigrged metal bar. The end of the metal bar farthest from the chargedaq7jgei rz69 a7(2(sq;tackci (.a ne rod will be charged

  Sphere A carries a net positive char quu4k r/vc3+xn:fm 6n 2mlis6ge, and sphere B is neutral. They are placed near each other on av m :mni/cuks6n r4 +6f3ulxq2n insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an1 cd2pw.fgc 7l electroscope positively?

  An originally neutral electrosc 3h .n+ucpxxh*ope is briefly touched with a positively charged glass rod. The electroscopenhpx c3ux*.h+

  An originally neutral electroscope is grounded briefly while a posiblb)ar*rbr ) -tively charged glass rod is held near it. After the glasb* )-rrrb ab)ls rod is removed, the electroscope

  A positive object touches a neutral electrosckxo+e9, ocf:bgso5huln xt+4y m6n5 7 ope, and the leaves separate. Then a negative object is brought near the electroscope,u+:5bxo4sg5 m9ehknfoyt76 xol nc+ , but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutrywr2bw* g 9a l3obi owdm,w::+al 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,wl:9b a3ob yw2:w*wid+ g, rmo 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 cons4bp;r1e bc p:atant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larges7olnl+qvmm vr,jgw0 p:+w +;r in 0qrg+o+ww:jvl ns+,7p ;m vlm magnitude than the second charge.

  Sphere A carries a net charge and sphere jbqy pzp+-(a8*p n7fz B is neutral. They are placed near each otherz zy8(f7qpjpap+nb- * on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a :-dfo 8ybh3g*u-b hajcertain force. If the charges on both objects are doubled with no change in separation, the force between theh* -jou-h8dy b f3bg:am

  Two charges are separat7y5a:xk7es z/f .raj ned by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual 7. rze:kafjy 7ns/a5x forces?

  Two charged objects attract each other)n , 2hehx5v-z45 wg-rkkejs w with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separatksw2 x45g),whvh5r-n kezj e-ion 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 distance of 1.0 m. What happe n9dzpwra x2ux as 027m+8* r0f4lmnsjwji:0y ns to the magnitude of the force on the proton if a second electron is placed next r9xyj00ar a n:0+i mszxsdfp4nuj2 *l87m ww2to the first electron?

  An electron and a proton are separar*u*tvi2t jbt6u j1f6ted by a distance of 1.0 m. What happens to the magnitude of the force on the first216ti *rt *jftu6 vjbu electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a d5fe f-jk xv7b0e4ne)q istance of 1.0 m. What happens to the size of the force on the proton if the electronv4 keef0qjxbe)5 f7-n is moved 0.50 m closer to the proton?

  A point charge of +Q is placed gqlpew7dibof8y be2z+tn(7 ln8m. 8 7at the center of 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 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 electrostat7ed7bb fgn8w2(p o78 tiy eqzl8lm+.nic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at theq ,f, yn9bf9pstzgn;-o1k.rk centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertrnt ,9q.-z gosk,1ky9b;nfp fices, 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 vector hq7mekc66mv1 qbk 93s?

  At twice the distance from a point charge, the strength of the lw28zvth (dz +electric field

  Is it possible to have a zero electric field *wj,05 yo q+ cs+4afrkakhf7 xvalue between a negative and positive charge along the line joining the two charges?x*q75r0 ca,yksfw koa+fh j+4

  Is it possible to have a zjd jga80mjw5h3y cu, y.k:t q6ero electric field value between two positive charges along tha3u8j5y0k,dw tqh: gjcj. ym6e line joining the two charges?

  Electric field lines near psir 8oy g/dmfa;.si/.hi tive point charges

  The electric field shown ;la etdm buf)q5lo() -

  Can electric field lines intersect ifdtqw5 v 7qu/4v7k ,pin free space?

  A solid block of metal in electrostatic equilibrium *h8qgm 5shte/is placed in a uniform electric field. Give a *m5qe gs/thh8 statement concerning the electric field in the block's interior.

  If a solid metal sphere and a holr5 tpzua+ap + ekf;5)hlow metal sphere of equal diameters are each given the same charge, the electric field (E) midwaypf5h z5p+t;) u+akrea between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regix3gw)1lwafoo 7l.v qhzno:y v:t8 2.aon where a uniform electric field is directed straight upward. )ofv3.: .o l 2nlaw q8:gotvhaxzw7y1 What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electrik jlx v/n-; b0urmf3i,c charge

  A positive point charge is enclosed in a hollow metallic sphere that is gr hb *fmq4njmt .4k25nlounded. As compared to the case without the hollow sphere, the electric field at a pl m245t*m hfjn.k4bqnoint directly above the hollow sphere has

State three properties of conducn9nd) v zrfc 2u 1tzl55:ao pehg1c0j(tors in static equilibrium.

State Gauss's law.

  The charge carried by one electagb n yblflq,()j3z:*ron 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 manyi. n.d ;x,t kh.mdvec7gjrh;. more protons than electrojt x.n;c.herki v7.,.h;dgd m ns does this piece of plastic have?

  What is the charge on 1 kg of protje dn2p;. rva7ons?

  An atomic nucleus has azli+kh 9xw* m( charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separat4ewbs ud:/nz 0ed by 1.5 cm, have charge values of 2.0 and -4.0 mC, ress:z04bw neud /pectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between twypjmua:3 4;+i;jzddhem is 1.0 Ndjy+ wda;4: 3uz ;jmip. What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?zo33 rolm1 go:l+c(jhhoe w:;

  The force between a m 8ako-l;dqy- $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cfvz)o-lk; 2 l gec 1azch +f+ys(tp)u5m 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 them?f -ag 2z zp +)1c5+u)ylfchkl(e;otvs

  Three identical point charges of 2.0 mC are placed on thezi0m.+1 hm-nqcpz ;m 2 hsub,y x-axis. The 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 electrostatic force which acts on the charge at the origin?uh0bqc y-zzim ;pm s1h,.+m n2

  Three point charges are placed on the x-axis. A vgcxlxji-9g3pwa2 a e 36j;r-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 magn3gwlgr;peja 2-i6-xa v9j 3xcitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2vl-3qxegt;r0 mc 0jlk2irg0 1.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. Wi02gr100rl m vkx-jtec q3;lghat 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, andp2ughqh .jlli 7: 24:8gtdep7 v-fhkd 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. vftiklguleh2 -pdj 77hp g::2 4d8. hq 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, 0.10q; -lfej,9tu ikb;n q bw4:n4q m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the netnw,ujqin ;9b4kq f:eq4 -btl; 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.f (2ygjvcl+ 9l10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the cg(9y +2ljv lfnet force on the 5.0 nC charge?

  Three identical chardpx-yp8 s9-7ov f:zu sges of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. W7-:9x du v pp-szs8fyohat is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whaq+18/g qjswjofbo03 h;meuj9 g+5gz st 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 be zef0;5gso8 jjomuw 1gqb hsez 3qg/+j+9ro?

  A +3.0-C charge is at the origin and a +9.0-C charge ivsgu(ui1 ,k-rd usuli71 . p*ks at x = 4.0 m. Where on the x-axis can a third charge be placed so the net k( uvds,u71l 1iursp.-g iku *force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2uo;brn nl8/s:r k cawp -99y1ua. Where can a thiunu:lr 9nos8 /; cb1ywkrp9a-rd positive charge +q be placed so that the force on it is zero?

  A copper penny has a m+ iy8ra:m.ht3;u9 oq ell9ei6m yodb8ass 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 o7nsd7 *vs n5 (whheamg j)/8ymf gravity by the attraction of a fixed proton some distance above it. How far above the e85say( mdmsjw)*7gn7n h/vh electron is the proton?

  Two 0.20-g metal sphi -s w-2t0a8zwltf:ve eres are hung from a common point by nonconducting threads which are 30 cm tw2a8 -0fze lwtiv:s -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 charge of +40e. Whatg)k swtxiu49r) dah- , is the magnitude of the electric field at a distance of 1.0 m frota9ksir )gh w,)xd -4um the nucleus?

  What are the magnitude and direction of the electric field at a dista.8 fcjgztle+d 50z vj8nce of 1.50 m from a 50.0-nC j zeftjvc0zd.8g l+ 58 charge?

  A 5.0-C charge is 10 m from a small te5z5fhq; /bblwst charge. What is the magnitude of the electric field at the location of the test charge?b bw5;fzl hq5/

  A 5.0-C charge is 10 m from a small l 6(a fyeo(a+q6sp8fa(h qm-v test charge. What is the direction of the electric field?66-y aapa8vs(hql fo+mf((q e

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the ff;e+q3j ,ksp+:fk r yiorce experienced by a 1.0 nC charge placed at3,y+fpi :skjqkef; r+ the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a disty s5f0pq1pd-e ance of 4.0 m. What is the electric field at a point midway by 5 qeds10pp-fetween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a m 0(suh+gthq) jeter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mar( t0hgsuq )h+jk?

  A 5.0-mC charge is placed at the 0 cm mark of a me n q.1wpjgx3(bter stick and a -4.0 mC charge is placed at the 50 cm majn.3b( p g1xwqrk. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7d5+j yygyc 03 )znr*lv.0 mC are placed at x = 0 and x = 0.20 m. What is+ dy0)r *z y3cn5ygljv the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges aiq/qq, 0qo2 .:ql cztmre at the three corners 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 s2/0 mt.qqlcqiq: zqo,quare.

  Consider a square which is 1.0 m on a side. Charges aree+ xojbv)x.( f placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 eo xvfx)+jb(. 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 uniforq3()j -wa*j b:uxljfuu;p ;mvm electric field. What is the ajmjw(- fp3 qx buu) l*:v;u;jmagnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass m;dt+d(cf- ln+h p,nl+zc o6wof $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of massu oneiubxz;wo 6 e1ejs2(,i ** 0.120 g is placed in an electric field of 6000 N/C poinw*z,bu;eii2e nox (*u1js oe6ting downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -j*3xwi6s y p qmnmxo,u4+en *)2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What n6q+e usi xy* j* ,mnxw3p4om)are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +y,,0 z n9pxic/s3 druu2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfacerupx, 0y3dzu/n,ci9s?

  A metal sphere of radius 2.0 cm carriesq8do jw eb+q,zwmr3zsl;m ;4 gz9gr5jxt5h43 a charge of 3.0 mC. What is the electric field 6.dwz4 mq 33r4 5ez 9tjz+m;rjo,hlg5 gw;q xs8b0 cm from the center of the sphere?