State the law of conservatiij8ln/krq*5 3 v7gjsion of electric charge.

  Is it possible for two negative charges to attract eacf 2fuh4(dx d u(ol;c:ah other?

  Is it possible for a positive and a negative charge to aa1l+x7z pp 9svlpt:q4ttract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass 6uxg- y1z;vhfrod acquiyx6v1g fz;hu-res a positive charge and the silk

  A proton carries a

  The model of the atom shows 2v a6 (smxf:vha

  A neutral atom alway.fdfb awb;1. ds has

  An atom has more electrons than protons. o mmi d-q0c9.zThe atom is

  Materials in which the electrons ar 5.oke)w5 gwnle bound very tightly to the nuclei are referred to o )k5egn. 5wlwas

  Materials in which the elecbrm,9v.yq i0qtrons are bound very loosely to the nuclei and can move about freely withqqb.r ,vmy09 iin the material are referred to as

  A negatively charged rod is brought near one end of and1z q; ;hr7:bbvkk vdts +01yo uncharged metal bar. The end of the metal bar farthest from the charged ;1tk : d0rk v1dy ;q+vzboh7bsrod will be charged

  Sphere A carries a net po8:v1m:: cmx9i tb sr3jiqja7d sitive charge, and sphere B is neutral. They are placed near each other on an insulated tabd: ji:8sr3a qbmmv:ct1 97ijxle. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivelx,4x.wyarux 8f6 h6mrq6 kfa0y?

  An originally neutral electroscope is briefly touched with a positively cha9u ni( qb9p13fmhg2x arged glass rod. The el 9(1ph xua92 gi3bfqnmectroscope

  An originally neutral electroscope)*9f0dfne) i78vc (dyiye a we is grounded briefly while a positively charged glass rod is held near it. After yiy 0 v8 e)(9ne)fda7ie*dwcfthe glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Ts cknlzlf19s b p/-i2;hen a negative object is brought near the electroscope, but does not touc n 9- c2lils/spzb;f1kh it. What happens to the leaves?

  A large negatively charged dm)4d ) w(sghqiz.-edobject is placed 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 touch the negatz.m)qse d 4hgdiw)(d- ive object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb consh g6pfe5rkz + 4(awksp4ft ,g;tant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firss :sms c.zo87ut charge is larger in mao7usc. zs m8:sgnitude than the second charge.

  Sphere A carries a net charge and sphere 6arnqr1rp y p-whw k+:4 6u1wfpdd .x4B is neutral. They are placed near each other on an insulated table. Which:+1p.h6wad4f4p d1 rxnkw6r pqwu yr- statement best describes the electrostatic force between them?

  Two charged objects attract eacg *cr664locjy; fu v7if;8irbraj3-yh other with a certain force. If the charges on both objects are doubled with n4 cyi6b 7;gcr*ry- uo6ji;3rlv 8aff jo change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forc - x2cw5 l6fdxcl;0sroes of F on eacf5 6d0 xw;-oscxc2llr h other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract hi;z8zx qw6/d 0 flu7aeach other with a force F. What happens to the force between them if one charge is doubled, the other charq;zd 07uf68lawzhix /ge 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 b 6xuj;af9kn/n y a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is plfa kj/un9 6;nxaced next to the first electron?

  An electron and a proton are separated by a dindrtxoy)z5 yq)u4uptr*s5mn3 o4 g -8stance of 1.0 m. What happens to the magnitudp-3g4)qn otyu5rn roz8m sy 5u)*t x4de of the force on 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 happens to3lc9zvuya,( 53 nz/0 gzahbqm the size of the force on the proton if the electron is moved 0.50 m closer to the proton9zqnl, c3h mv5uzgaz ay(b0/3?

  A point charge of +Q is placed at the center of a square. Wh:-gp9z;wxmy0uz . te ren a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic g zz;w9 -xt.:r ep0myuforce 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 is placed at the centroid of an equilateral trianglezyro.:; o i;ul. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic yi ru;:zl;o.o 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 vecb)z xs:zjoi3sc b5-gy ei()8+r/akbs tor?

  At twice the distance from a point ed/r /drmd.av/5cc), e yyt9qcharge, the strength of the electric field

  Is it possible to have a zero electric field valuceq+5b 0oi ii 6a.6n:2 ayprjye between a negative and positiqiy: p066 e riy5acona+bi2.j ve charge along the line joining the two charges?

  Is it possible to have a zerog pw l4r**fmx2 electric field value between two positive charges along the line joining the fgmw 2x*l rp*4two charges?

  Electric field linessa . vw+x8m4kl near psitive point charges

  The electric field s+z mi4;cbaxf ls1 *g3ohown

  Can electric field lines intersect in free spacem ;kd6sda /6sfwodrgeh7cu7ak . 559k?

  A solid block of metal in electrostatic equ p 5lk(uabvj d-y7c/x8ilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the lba8v(jk5 u c dp-yx/7block's interior.

  If a solid metal sphere and a hollow metal sphere of)7 q8+vhdgd jbj1 q6tr equal diameters are each given the same charge, the electric field (E) midway betweebjdq1 6)qjdhvt +r8g7n the center and the surface is

  A cubic block of aluminum rests on a wooux7yn r ihy,hs62 su ,e97drj(den table in a region where a uniform electric field is directe7 2 ix6j(7syrhu 9he,ry dun,sd straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charb9/ r9srp(4a bfcqs l2ge

  A positive point charge is enclosed in a hollow metallic sphere that is grountpm fi ,bh+b4m+1au7yded. As compared to the case without t m1y 4u7+bhiba +,ptfmhe hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium.4txi46qx c/slz(o md3

State Gauss's law.

  The charge carried by one ele*t8ni7cb :elbv(l b;alrn :*p ctron 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 5i2 akir;)xwnmany more protons than electr ;2kniai5w)rxons does this piece of plastic have?

  What is the charge on 1 kg of protonqw84 ;m8bchk0js 2vdd s?

  An atomic nucleus hasy+s0fbgc d -7p2sis5 oqd 7oe3,zft1l a charge 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 .bc pupdj*- 8ty6o 7nt/serz1charge values of 2.0 and -4.0 mC, respectively. What is p t/d-ezybr6.u j81ctso7 *pnthe magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the wpd851tq,y*7dxkr; c fiyt 0kforce between them is 1.0 N. What is the magnitckx k70y,y5tdt8ifr *1d p; wqude of the second charge?

  Two 1.0-C charges have a force between thwtiau5qp( 7q.zv q,z. em of 1.0 N. How far apart are they?

  The force between a s urul.6w59 -uccz;9*es y4ee dd;q ov$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, inid89ssi0ucb724a:ilr s .m phy tially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, whatsima97s8drc 0h4.sp 2y l:ibu is the electric force between them?

  Three identical point yko1:b 5nsn jxcyye7m+q2j)d2 0x-xv charges of 2.0 mC are placed on the 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 on5b nny2kd q xcy:y1-me 7xvj)2+0 jxos the charge at the origin?

  Three point charges are placed on the x-axis. .u+ kymp n 44fe.+bapk 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 electrostatic force which acts on the charge+p b aey +k4p4nmukf.. at the origin?

  Three point charges are located at the following positions: Q1 = 2+)vz0tig/jhu+jz/ jql 3db6m .00 mC at x = 1.00 m; Q2 d+gvh/j +jm3tj)z zl/6iqb 0u = 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 charge?

  A point charge of +Q is placed 7mhvz2 l b1i*eat the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is o vehm2l17*izbbserved 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 placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0)kvxbl4bm3, x1j8gh(m9dn /wi ; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). j bk1vlbn8w,d(9m i34gh/xxm 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 = dz naw/ 32wvs05.0 nC is at (0, 0). What is the directiwwzsd02 /v3an on of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertice hkg5xq,zn 02d(.pu ims of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic dupx.k 5(zi m,0h2nqg force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are se(7od2e/d :ph gu-kz:o( v/k akmha )brparated 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 th2/a:kb dp(ukz kavr7e)(ooh/h: dm-gat the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin9 ;yj9 esp1bnd and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on 1jnybd; s9ep9 it is zero?

  Charge +2q is placed at the ort9:2ztd reza:jr1 .c 0gebjdke2sir g0a34i( igin and charge -q is placed at x = 2a. Where can a third:geiz 9t :z3ktd.easdrgi 2c4 2a0j(rr1bej0 positive charge +q be placed so that the force on it is zero?

  A copper penny has a masscc;4*jky p f;oya;jg :2oe-ri 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 gravity by the attractvifcfn epaw3v9w (2)5ion of a fixed proton some distance 2n3vv a )p ffec59ww(iabove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are 4qlir6avm ae1 :5bek4 hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle betweenal qm: rie bv5ek4a146 the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitudb 9q4wzexv: f6e of the electric field at a distance of 1.0 m from the nu6ve9 q wxb4:zfcleus?

  What are the magnitude and direction of the electric field at a distance of 1 *wtj8r,1r x)vvlaqx 5.50 m from a 50.0jqt5vvra 1r x ,)wl8x*-nC charge?

  A 5.0-C charge is 10 m from a small test chargk7lzopw:0wr1tmfos2 xvgq)e/ 3c l.6 e. What is the magnitude of the electric field at the location of the test cha ef2.wqltrz:03xck w s7p)lgmoov/ 61rge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of+p;q ; so+*tv ap /bjflt)ofp9 the els+/aj+tt*f;olqp;fpopbv9) ectric field?

  A 5.0-C charge is 10 m from a small test charge. kdi1ve wy5. 8g What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chargkdi18ew yg5 .ve?

  Two point charges each have a value of 3.0 C and are separa 2iql pjtr99xw-l) de5r jd-w,ted by a distance of 4.lpx q2tj5) - ew,drdir-l9j9w0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm marq4. bm qn1sv-nk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fi.snmq4-n vb1qeld at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick agbe 5lzvy b+1 l83jo+yyt45go m4+7viv. h swcnd a -4.0 mC charge is placed at the 50 cm mark. At what point b1yg hw 5z4+j glvlm.+v8vyc+eoiso3t7by45 on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placedcqrs4hs+z+vi 8l9 k j*t* (xfy at x = 0 and x = 0.20 m. What is the magnitude of the electric field at thzyqjs ir 4hf9 +s*vtc(*l8k+xe point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. pvx2gpauz (k0wn10q f0 r7ogz, -bo4 o The last corner is occupied by a -3.0 mC ch0q7oa krgu(z0, -zn0 1bpgxv4po 2wof arge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a siev p7l9(fllgql8d:tk3nbedy3 9q 74q de. 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 mC at (0, 1). What is the magnitudkl933:9vlf4b e7dd ty(8 l7negqp lqqe 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 ixpyl1 q4a5 :emn a uniform electric field. What is the magnitude of this electr1ax5ml y :q4epic field?

  A particle with a charge of 4.0 mC has a maiday3 runn+1an9o72w ss 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 electrick2 3put x3y6dzw xx90/ed;zdo field of 6000 N/C pointing downward. What charge must be placed on the ba o z2xex dxk6/p uy;wd093dzt3ll for it to be suspended?

  A foam ball of mass 0.150 gjw2yv :gm3e7 q-* bh*xloqhi) 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) qm3gyo-7wevl2hx: i* jq*bh the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of ok++ 2bqzwd m9+2.0 mC. What is the magnitude of the electric field 5.0 cm from the sp2kbm q 9owz+d+here's surface?

  A metal sphere of radius 2.0 cm coxq;)4n .q/ ig .3 /tqssyftkuarries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of);. tsgxfu/sktyn qiqq 3.4o / the sphere?