State the law of conservation of electr-xhcd0l.bovyo c 10y. ic charge.

  Is it possible for two negative charges to attract eai78-z7a.m xl,qbpc okj, m; umuv8;z xch other?

  Is it possible for a xnx8(8+c3 jww sdfr3: hi7cv qpositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the pr wx1fn)/pz li4ocess the glass rod acquires a positifz/4wpnx1l i) ve charge and the silk

  A proton carries a

  The model of the atom shokum0st d aankw95l383 ws a

  A neutral atom always hauw . d.yo.9czms

  An atom has more electrons than protons. The atom isdn,+tu9v -sfl

  Materials in which the electrons are bound very tik,p mpxl g (d3s:2yj*wewl ,yq:u2h3hghtly to the nuclei are referre2p3:* x ywsd uwml pqghy,h,ek (3:2jld to as

  Materials in which the electrons are bound very 2uq-4i; pyh8hyl z 6-5spo d0nmepe*eloosely to the nuclei and can move about freely within dm4u sohzn8e 0 *py6e-p2pyq- lh;i5ethe material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal **lru2)7gw jwxno rrf0c,ff* bar. The end of the metan2,fc)u *fgw*w lxf0 j 7orr*rl bar farthest from the charged rod will be charged

  Sphere A carries a net positimmd4:+gg0u u yve charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is b4um0y: dg+ umgriefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chargedee3jamwu( 8 wlf5(xf7neh 1 u9 rod charge an electroscope positively?

  An originally neutral electros)jm 0o rgldab a54n9s(cope is briefly touched with a positively charged glass bd0a() ojmsgrn5 l49arod. The electroscope

  An originally neutral electroscope is grounded briefly while a posit.mxl o-4h33aw w3x1 csjhkf 2aively charged glass rod is held near it. After t3 hfx c3-4sl o 2jhmxk1waa3w.he glass rod is removed, the electroscope

  A positive object touches a neutral elx7 cr jd3yh9,bectroscope, and the leaves separate. Then a negative object is brought bcd jy,xhr93 7near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an +b1 jaw rt/yd6h+lc(*x blpw.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 negative object. What is the final charge on each bal1*d lah/b( 6ylxwp+bw jr+.c tl?

  Charge is

  What are the units of the Coul b5q.3wzh 02x+bqloj lomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance tbxy 2w7hq 5yc)s1xd;d. The first charge is larger in magnitude than the second ch;y2qx y57dwcs)bh1 txarge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near ey9mjo:m ja bhy v8s0m76h 0yk:ach other on an insulated table. j 0y70jy hb h9o:8myms:mv6ka Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. I (siw +xi*q:dbf the charges on both oi x*q(b:d+si wbjects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive for1 um(cnrc e9emcj (5 j);bler(ces of F on each other. Imce)nmlcr;j9 je(1cub((e5 r f the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with 5kz vsml,d q)x3p8xl:z )3 ucn bn,d5ua force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its:5u3mzd)bq5 ndp3v, x8 ,lknzsu x)lc original value? The force is now equal to

  An electron and a proton are separated 3v: y+ql af6cz)vy e+ 2vm7khwby a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electron?vwa)ly fy 2 6++ zvveqmhkc73:

  An electron and a proton are separated by a distance of 1.0 m. b oh*sdzr023 oWhat happens to the magnitude of the force on the first electron if a secs*20h3b zr dooond electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0rpuob;)ci3* l m. What happens to the size of the force on the proton if tripo;3*l cu) bhe 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 seco2w/c5vn)nny7i *9mwhwjin a-7b rz 5ynd 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 miwra y/*nv)wnih c57n7j5nb m-w 2z y9agnitude 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 tn r /5p9udnpx:*4.5hfgez pmdriangle. When a second cphd. u fdz xn4pg/en:p9 r*m55harge 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 vertices?

  Which of the following 5 zm g vx)z0,t1;ceqyris not a vector?

  At twice the distance from a point charge, the strength of the electric fisr h9klwsw7wp2 7*+r jeld

  Is it possible to have a zero5 auvj)uyn:walrw :53taas ., electric field value between a negative and positive charge along tv: auy t5 35jlwa:a,ws.ura) nhe line joining the two charges?

  Is it possible to have a zel j s) 7z(txxeh;c4:byro electric field value between two positive charges s4t:)7 ;cyhxzeblj (x along the line joining the two charges?

  Electric field lines near psitivbacx w64itio19 sg9h /iwv; g(e point charges

  The electric field sp7(q-)zcku kc3q /e*nqh0 bvt )b5c gwhown

  Can electric field lines interse :n gw3 y)a;(f qxth4fkxwg+2wct in free space?

  A solid block of metal ink6 .onej *v+yu electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's i.6 *jyv+n ueoknterior.

  If a solid metal sphere and a holl 0lxp ;c,sby:gow metal sphere of equal diameters are each given the same charge, the elep0,:cs lgx yb;ctric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uv4,i9z*e huon: 2ikqs0 p+.5oqnjzsyniform electric field is directed straight upward. What qzs*: s ovie0u 9qkjhi,2ozy +4. nn5pcan be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrijt3d y7h+q :z+ez9umyum near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groun9 5k yfkh1xquhyo:y26;fob) fded. A:x9fk5f qy) ;ufyhyb o12 o6khs compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in zgf v.w/:ap:fg)2uu zstatic equilibrium.

State Gauss's law.

  The charge carried by one elw7jkhzel7ss k8gz.: j.x(-zb ectron 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 protons than els gsjaa*td4 q0:mqp 3y n3l9/wectrons does this 3 s4qty 3*:aqwp s g9mlj0/andpiece of plastic have?

  What is the charge on 1 kg o-wl0 sjmd40ka whq 8q;f protons?

  An atomic nucleus has a char p*dx/bu,0jnige 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 2.0 and) naac9xl+z1ysb.elfz, h,1d -4.0 mC, respectively. What is the magnitude of the electric fylze1ca,n xb.l 1, +9s zadf)horce between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is /wenp1vdtsg) +qo,7 i 1.0 N. What is the magnitude of the second+v q s,7wd1)ne gpoti/ charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are theo eti 38w bht1abdr3,4y?

  The force between a fy+hh(z3hr wdr( os.i35yv x9$30 \; mC$ 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 arb o/g6( epus)set6ph qev0) o8e moved e tb0qe geu8/ps) (6s6oho)v pto a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC ;/4fq9k,8bfwd tp .wcs8vesiaa0yo+ are placed on the x-axis. The first charge is8d8of+/sqw0; ap .9 ,kwcei4b ftsyva 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?

  Three point charges are placed on the x-axis. A chcq4*cg swe+ 1x.+a ufqarge of +2.0 mC is placed at the origin, -2.0 m C to the right at gq.*wc u+1af4e+scqx 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 djqqy2b* j:7j = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is tq 7j:2j *jqdybhe magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a d duqmydvl0 :9-+blnt ydo : ,ct1f2l 6r5ymz4second 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 placed at the lower-left c ,dbndt 51609uycz y:ldvml 2:4mt-l+y q rfdoorner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0w 2(ywll5 swk6 nC is at (0, 0). What is the magnitude of the net force on thw2(5y6wwlks le 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (as s7u+*q j2yl0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is y lu*qa2s sj+7the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are pe2 k1ze+r 2akmlaced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one or21 a2zmke+k ef the charges?

  Consider point charges of +Q and + k8jvi2x ,8yvcxn z9.h4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to8c9y.2zj x,khvxi nv 8 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 a-xcdt8 qa8sdd:l j5 7ynd a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a thirdx7acdd jd-q:5l t s8y8 charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed a k92kopszdn8*76l. qlr(e f8umebsf 5t x = 2a. Where can a third positive chasm(sfklb uor8 e6 . 7p5f9zdk82qe*lnrge +q be placed so that the force on it is zero?

  A copper penny has a mab n*orxl)q5n(ss 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 tn- )c n.:dvsgehe attraction of a fixed proton some distance above it. How far above the electron is the proton?v g: sce.)nn-d

  Two 0.20-g metal spheres are hung from a common poiij.ijiu9c4 u2nt by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads .9 uuijciij24is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e.6rfykd v*b 2z7-,z ym( ;xtbkp What is the magnitude of the electric field at a disy b ty;pz*-x,b7z2kfd k( rvm6tance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field /kgn.j6 vm4uh6 ;tqihe+gr n9 at a distance of 1.50 m from;u/jt r.m9 v4in g+6ghhn6kqe a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of)me xq 6j(;ge+ke(q 0yn5huwu the electric field at the location of the testqq(e)nm6hk+ju eew 0; uyg5(x charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of t ,feo hlh08l5qxc15z(vs11ycqrt bo6he electric field?1hh 0z5 5elqv8 cq1bf6ot,xcyo1 rl( s

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the fv2rr;( ai.kpcrps9k 5orce experienced by a 1.0 nC charge placed at the location of the testk ; 9 (vk5ricar.2rpsp charge?

  Two point charges each have a value of 3jaw qeeo5(nxsgnuc*n6k* v 137/pq/z8cblx:.0 C and are separated by a distance of 4.0 m. What q/:u( b1q5pw nn8g7oxcznkjlcv*sa*xee 36 / is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick j-qo: .vg)2 0notwzerand a -4.0 mC charge iovnztre)wq o:g0j2.- s placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at tha:b(/ h9kinq4eq fu0lt v b30 5b)zbwce 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two c4n0a)bi 9tz:0f k3 hwbvlqbuqeb5/c(harges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are p(a+8h e arygb7laced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at t hr+gya78ab(ehe point midway between them?

  Three 3.0 mC charges are at the three corners of a square0zs 6 wpck:ru00fl6jl 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 squalz 0:p0 jf cr6ws6l0ukre.

  Consider a square which is 1.0 m on a soq ,ejyu)/ th7ide. 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 magnitude of the ,e yu /7qhj)otelectric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC whenuk :sb0vo --9spg9gmou) c 6h8xan;ex it is placed in a uniform electric field. What is the magnitude of this electrig8anmxkox-0s6o pcb- u;su e9v)h :g 9c field?

  A particle with a charge of 4.0 mC8 nob) ;x ;ypqlkjo38h 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 g2pw5 p xb((vcz is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball5xc( b2v zpp(w for it to be suspended?

  A foam ball of mass 0.150 g carries a charge :(hi7m63hzu sodb2:.f xbyf xof -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magni6 x:(usy73h ofb 2fm.:x dhbzitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What eg. jlcm s 3+;ty1u,wjis the magnitude of the electric field 5.0 cm from the sphere'sg ;js1,j.l3teyw mc+u surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What iso38qtyuc-cmf 4 if fry.:xe8yt45d6 t the electric field 6.0 cm from:6tt.e xo-yq4tcc yfy3m fu885i4rfd the center of the sphere?