State the law of conservation a :z gd7ljwb .1t6evqxcl6.eqvj0 k(4 of electric charge.

  Is it possible for two negative charges to attract eacl -mcugo9x(,ej 6 k;vth other?

  Is it possible for a positive and a negat ;(i :j,pg9ydz4a qnjvive charge to attract each other?

  A glass rod is rubbed with a piecjqmi /8y1,nh ru1c+ wre of silk. During the process the glass rod acquires a positive ch1r nuj,irh1+ ycq8 wm/arge and the silk

  A proton carries a

  The model of the atom shows assts3m2a+e+j v4b9ia

  A neutral atom alwaysxm wn twy,x 3m /0l04g1mabns/ghrg:/ has

  An atom has more electrons than proton n)*9 uy;tudmgs. The atom is

  Materials in which the electrons are bound very tightly to th-l /3) o4kcldh vxq,ybg+/c ive nuclei are referred t o3dcyk)qhb vl c v4+ilx-//,go as

  Materials in which the electrons are bope muzt w( xc7xus:8ezwsa:915u m: :aund very loosely to the nuclei and can movw9 :8w1mtcuume a7 z5 xaeux:z::s (spe about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bb h,4z xmj5x toao4 vk2.e.yi9ar. The end of the metal bar farthest from the charged rv.jkiax too59xzy b2.h,4e 4 mod will be charged

  Sphere A carries a net positive charge, and spher*qka ua.k 9it2e B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groa2k* ka9.q tuiunded. Which statement is correct?

  How can a negatively charged rod charge an elu+. /ix* p(i0hyxi5vd f ng:nhectroscope positively?

  An originally neutral electroscoph)kzgfr:9 2 wnmt1t+ge is briefly touched with a positively charged glass rod. The elec2+1 gtmrtwf:z) h9kgn troscope

  An originally neutral electroscope is grc0+hq2) lnbn (j buj/nounded briefly while a positively charged glass rod is held ) qhnbnb02ljc (j/n+u near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the lyq)v5zbi3:kbyb9 q (h eaves separate. Then a negative object is brought near the kbv: iyqh bqzb(3 59)yelectroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutrals 3f0rkf i tsgnd (-v0181jrgg 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 ong kd ns3f(jr01tggs0f 1ir- v8 each ball?

  Charge is

  What are the units of the va-8m: d(wohgzy (r:uCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are sepowh75 ww *uv zserw;3t,5 vk)farated by a distance d. The first charge is larger in magnitud 5tw5ve)r ,hskzwu;wwof7 *v3e than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are pl6xhmc 2 13mit-jntg2j aced near each other on an insulated table. Which statement best des6nj m2x -mgtt1c3jih2cribes the electrostatic force between them?

  Two charged objects attract each other with a certain forcem7d+czb8 cp(f. If the charges on both objects are doubled with n c8+mdpf bcz7(o change in separation, the force between them

  Two charges are separated by a distance d and exert nty) *bn+xeu 4mutual attractive forces of F on each other. If the charges are separated by a distance of 4)n+tybnx e u*d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the t5u a8)x zxmm;l;t/vh force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fou/u;lt8)mxxa m vzh5;trth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens to iq e/.quz6q5 qthe magnitude of the force on the proton if5 qz.qeq uq/i6 a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Wh5;w6zwd;nn.jd k sk,nat happens to the magnitude of the force on the first electron if a second electron is placed nej5;ndskz k;nn6wdw, . xt to the proton?

  An electron and a proton are separated by a distanc+bx11+ (fp2 ka )kmcw8 uxyusue of 1.0 m. What happens to the size of the force on the 21 8up cx1+uxfb)ykkwm+(s uaproton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed zumv01-qu/axf3e qyhw;a ,2cat 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. Nh0cy-zq3fu xevm2a1u/q , aw; ow, 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 trvxh4 w8dp7u( siangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts 4x7hs( pvu8dw 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 b2p2*/hpidpwis not a vector?

  At twice the distance from a pointg7x: 1a2p 1hfx:mo hfw charge, the strength of the electric field

  Is it possible to have a zero electric field valqmn8my5 hd8 f8ue between a negative and positive charge along the line joiningynhd8q5mm 8 8f the two charges?

  Is it possible to have a zero electric field value between two positive charges zfyt +mwn+p z8bz c)ej 6.bz-2along the pnytc2)z-z+j6 z+f.zwbb 8e m line joining the two charges?

  Electric field lines near psitive point c;eimjoo nlm9j ;e01 b-harges

  The electric field shown /nk l6c1b5)q +vx 84ccnx46niom4x n/gijrr u

  Can electric field lines in5 nx2puls l.d7tersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniforu 2:3 tm nb;(i-cgahp.d:j eo)8tuhrxg u+u9tm electric field. Give a stoau(ut2 : m8incgguhhexdr- 3:ju+) p. 9b;ttatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eachym9kes1d/uegm,8 0 i2zsjm.n given the same charge, the electric field (E) midway between the center and the surface ise,d0j2 ez m.i1y8 s9musk /gnm

  A cubic block of aluminum r.d8:znxql9 .kjkv5d4-e 9 mx)wkiqn 9n,ulsiests on a wooden table in a region where a uniform electric field is directed straight upward. Wk-swuxq k 99).v xlnnzdie.k:48 9in,qdm l5j hat can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an el o2 so+8mg,c6tv zx.)wchp sel3p;ku9 ectric charge

  A positive point charge is enclosed in a hollow metallic sphere that : +;wq7;-mvf at9cbpjwu1 uk uis grounded. As cop +:9qu7-j ktbuvu af cw;w;1mmpared 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 static equic0g.j.o,cx) kv (k ysslibrium.

State Gauss's law.

  The charge carried by onepqu h, lq /43 j032pwkbxfoo 4d*k3,v/xupsgg 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 +;rdrq j; kyq/9: dlrn02.00 mC. How many more protons than electrons does this pie d0:rnk/;rj;dy9r qqlce of plastic have?

  What is the charge on 1 kg ot wq ;g9:/ (cd ovqa+w7spws+xf protons?

  An atomic nucleus has a chexs33n om6;u9ceo3z narge 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 -4.0 m /ootzmzn ej-p,bx9f)fu /6 ,bC, respectively. What is the magnitude of the electric force betweeef/ -tu)o,/j ozb, z6pmnf 9xbn them?

  A 1.0-C charge is 15 m from a second charge, and the force between them ru);k.i+oljf. a -l6ote:dys is 1.0 N. What is the magnitude of the 6ltjilrs)u. .+;oo:k y-feadsecond charge?

  Two 1.0-C charges have a force betwtx 9ck**p/7j4ct brd teen them of 1.0 N. How far apart are they?

  The force between a c0uo vrtw/a6z 62z+m -6fe9k szxo nk/$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exper7ey2 psvm7x knl59(xz-ss xp/ience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betweenx sx 2znsv 7-/7(yxmplpsk5e9 them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firb k8f 5yu0w0nk ;c;v+ h.klqeust charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm k0l c +50e;kvuy8hwbn.fk; qumark. 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 my/ n6:; kve54sxvrguz C is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4ek4;nvrgv y5zx/u :6s.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 lk b s:(8rot5+5d.m b cokbpf6jocated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.0pcb 6obot s5f:k8rm.k+ djb(50 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q)a-2 xnmv,0.p,ck fxcwt .kp g is placed 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 e,g,axwfpc0c-v.ktx n2 p). km lectrostatic 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); Q2 =2 ofo(nvdxdftz:68hvqgh5 ,z43 -el d -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the n8z f d (v,tz h5f436:ln- 2heoodgqdxvet force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.7+cib4fkp*vh ke , pb110 m); Q3 = 5.0 nC is at (0, 0 p,ck 41ikv *pe7hb+fb). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC ej(fh vfd0. + zglqtn;rnr 9.,are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which ac9d,;g.fl t. zh+rn vqenf 0r(jts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.v2d-v)ti *eis0 m. At what point, on at sde 2*i)-ivv 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 zero?

  A +3.0-C charge is at the origin and a +9.0xtykk nwc7*, ,-C charge is at x = 4.0 m. Where on the x-axis can a third cha,wn*ctk7 x, ykrge be placed so the net force on it is zero?

  Charge +2q is placed at the orig *hi9/t y2xr/02auwzxvx, )l ynoi uu9in and charge -q is placed at x = 2a. Where can a third positive charge +q be placed)x09yauu/lwxi z yit2u,*o2vrh/n x9 so that the force on it is zero?

  A copper penny has a mass of 3dakj+v p 6h -jntb6k0p0k63bed2l9j a.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 attractio 3gglpocdq:trs(ra :324p g5gn of a fixed proton some distance above it. How f:3 gac(42o d ts 5lrgggrp3pq:ar above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconni-pbuz g 1:bqaf 4(t5xob69 jducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the thren xz65:4aoig9butfb( 1 bpj-q ads 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 electrik;f ;,b2b4p7 w+ t c5ktynxnyrc field at a distance ofb ycxp5+tkrt4nb,fw;k; 2n7 y 1.0 m from the nucleus?

  What are the magnitude and direction of the elec8+ bc+zu/ boq5ewey2ttric field at a distance of 1.50 m from a 50.0-nC charge?8ec5yz+bt+o bw/ 2qeu

  A 5.0-C charge is 10 m from a small test charge. What is k /kwthbq *u-h83b4r8 2mc0 kvqivqo -the magnitude of the electric field at the location of the test charge?3rt4vk*khui8boq vwkch8-/2 0q qm - b

  A 5.0-C charge is 10 m from a small tessyuu)t58 ntp :/n7s iet charge. What is the direction of the eysui spnu/8) t t:e57nlectric field?

  A 5.0-C charge is 10 m from a small test charg7oe(o2i9r byba /ch a/e. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locatio(hycr2b7 /o /obae9 ain of the test charge?

  Two point charges each have a value of 3.0 C and are separated8 v9:y9rufa6 qrb*vgf by a distance of 4.0 m. What is the electric fr av9ygfu6rqv: b*89 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 and a 3j r 3af(d,a;1lfpoj( 4t qepl-4.0 mC charge is placed at the 50 cm mark.ll3 ef pqa(f4a ,to rd3(p;jj1 What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark ofcs0ius(*o:b m a meter stick and a -4.0 mC charge is placed at the 50 cm mari( mub*c0 :sosk. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC ;8 dzaj0ipxr x0ed)5( gvad+vare placed at x = 0 and x = 0.20 m. What is the magnitude of theipvx08g 5(xd0aj+)e;davd rz electric field at the point midway between them?

  Three 3.0 mC charges are at the th : d1hf5ci,tdvw/xsk(ree 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 squarec,vd1s k/:fd wt5i(hx.

  Consider a square which is 1.0 m h6r2s7q rpcc(4uff b hl ;.h6gon 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 mg;h7frc6bs 6.hf( p quh4r2clC 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 iaa31a m* webg6s fl0(tn a uniform electric field. What is the magnitude of this elecmsfta30ga6(1 w l* baetric field?

  A particle with a charge of 4.0 mC has a xh z-a2 5s-gpu+ hwj19b5pi tqmass of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mas u-w7jd)+nvxss 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be plasvxdn w7j)u+- ced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a cha8. )x/ hige;v)i i fnn5*w)z-mvsviwdrge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of 8 n m/w.))n 5-zvgvvdeisi;xfii *w)hgravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm a vsu7 p 9lj98wov63*ny8uij qcarries a charge of +2.0 mC. What is the magnitude of the elec anjl8*83iv79yq96pjvuu ws otric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0f)+t3huw a u2u mC. What is the electric fielduuf+t )2wh3au 6.0 cm from the center of the sphere?