State the law of conservation 7z(qfw98 wdfcsvfu02 .og9c dof electric charge.

  Is it possible for two negative charges to attract each otheqcfhgrlt2-+0h f ku 5)r?

  Is it possible for a positive and a negative charge to attract each other )oo;i,lkc* hq (v)jno?

  A glass rod is rubbed with a piece of sil hql8, 5z (.co6ertixwk. During the process the glass rod acquires a posit 6oqzxr( icw.,t8he5 live charge and the silk

  A proton carries a

  The model of the ato,wy q(y3os sd(m shows a

  A neutral atom alwayprthv5 *+g.x5gpd 7f rs has

  An atom has more electrons than protons. The at g v;vz7g;/ttj99gsh5 kcmkqt748k qhom is

  Materials in which the electrons are bound very tightly to the nuclei are referrh3wroer3, fu /eo/u33rherf ,w d to as

  Materials in which the electrons 4l8ess 6sakjl zei;;)y1fw6 rare bound very loosely to the nuclei and can move about fr;as1e frjws)6iy ;zl lkse8 64eely within the material are referred to as

  A negatively charged rod is brought near one end of an unc b;*v,oebmz (z zx3sivr6nj0,harged metal bar. The end of the metal bar farthest from the charged rod will bmix6,3 sveb0 ;vzrjozzn(* b ,e charged

  Sphere A carries a net posit(d jn9 pcy*uqn-6kr v/ive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is bri*r p6vydu /jq(n9- kncefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elect.ozt+n-uv si6 roscope positively?

  An originally neutral electroscope is briefly touched w(: e9z hwi-ereje6m 3fith a positively charged glass 93fh6m eezw-(e: eirjrod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively cha1k 1f+iuxjwr(84o, g z7rsa zorged glass rod is held near it. After tz+oruw(xa1jg8k4i r1 7zs o, fhe glass rod is removed, the electroscope

  A positive object touches a neutral electroscopes3(6+5 l k;4 an8ppwayvv.a e3knelhg, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the le( hn 3kv;ln p5p4v3l+y8e saa.6w gkaeaves?

  A large negatively charged object is placed on an insulated table. A neutralw*9(g cikct38v/rb xp2q lvm 5 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 obj/5k cctq r9*lgx vm v8bp3(2iwect. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb cn -ofu6 v1-z505cm s v*peqiwz mz8g7c 8fe/lzonstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger gj-p r0)pa vfey0:tj1iygpj 0v )rfj0epa t:-1n magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are lt,k) pd7 i;3 4vslzczwt0)c qplaced near each other on an insul )ilvzd l;t04k3cszwp)7t,cq ated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract ey7l)z t9xmfv6ach other with a certain force. If the charges on yl96 zm7)vxtfboth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual att1 9w,2nu) )h0docqbrpyzw v 8lractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?pq wv8rubld))0 9yncw o21,hz

  Two charged objects attrac+qd.fm/kj / vzad:mvgdw : ,5vt each other with a 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 iwmk: .dgv d/v5+ ,vmfdjzq:a/ s 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 hy b+(fxo;/t.aj7 wj3z + 6kmrp pcw,kkappens to the magnitude of the force on the proton if a second electron o,j pcka3t7wx6krkbwp+. /z (j+fm ; yis placed next to the first electron?

  An electron and a proton are separateo,qd ,w qgwn mh7zh 8o4zd;;*md by a distance of 1.0 m. What happens to m w4ndzdz qm;h *h,w oo7q8g,;the magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separabtyma (r/z;v* i-)n4y:awyx ated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the prwt) yz; x*a-(yna4m bvyr:/ iaoton?

  A point charge of +Q is placed at the center of a sxpv) q v3v1zzv p(;5erquare. When a second point charge of -Q is placed at one of th;3 5(rpv vpzzqxv)e1v e 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 is placed at the centroid of an /uo*qcj o93nx equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertj 93qcou/*no xices, 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 vjjj8c1eccm3+ h- ( ,k xwjk xgz2ep0)wector?

  At twice the distance from a point charge, thwtcgj-0;l(g/nx n du s1 4r:xae strength of the electric field

  Is it possible to have a zero electric field value between a negative and een) +pvi*q)o;9+ujp6 mhgbgpositive charge along thn6bv+qpje)g gem )hp+*9uio;e line joining the two charges?

  Is it possible to have a zero electric field value between two p tz- yg,l *sxv-w;iq2r8lxa8wositive charges alxxwaq vs;- i, 8z-l82glwyrt*ong the line joining the two charges?

  Electric field lines near psitive poi*; +.am0i4lvl x1 6qvctb i;5ymdjr wvnt charges

  The electric field sho e,e3;;e k6.; wzlpk3zpdfyw1*rhu ycwn

  Can electric field lines in/i,vt5+ ea lcdtersect in free space?

  A solid block of metal in electrostatic equilibrium is placedq*. n p19emqbw in a uniform electric field. Give a .1q*9b pqwnme statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphehzkz/ gs hzi7u2y z98in+a-/nre of equal diameters are each given the same charge,/zn/z78h+2shigk9 u azynz -i the electric 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 uniformp;14:83o 72d eh zwkkgywcijos ez2g5 electric field is directed straight upward. What can be said concerning the charge on thcoe pkzw he g 7s8322y:4kzodw5j1i;ge block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chd/n,+y kg*- /nb( efb)adzqgearge

  A positive point charge is enclosed in a holns hr(i) tva(*rde* 7clow metallic sphere that is grounded. As compared to thecin( te*h(sv7r)r d* a case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriu5i8ee o qkq o/3oxs5g)m.

State Gauss's law.

  The charge carried by one electron isgg :vs *lrx+*cs7qd2n $e = -1.6 \times 10^{-19} \; C$. 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 pr3om4rokj6ewz n3n +/m otons than electrons doesnm z/eo 4nromj+3kw 63 this piece of plastic have?

  What is the charge on 1 kg of i aykh(k- n92rccrv1 6protons?

  An atomic nucleus halzol x;h7 6kl96x / wrq,nl0axs 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 chas;nlify 0zl wszt .a;4 c5o 0u1snwo30rge values of 2.0 and -4.0 mC, respectively. What is the 0za ft0401 wsosol.iynncu;3;z5s w lmagnitude of the electric force between them?

  A 1.0-C charge is 15 m from a seconfz.yqi*6 ktm+hnh 7-(+5ojfkmux +xzd charge, and the force between them is 1.0 N. What is the magnitude of the second charge?(f+m+. -k *qmnxufy6h ji+xh o7zz5tk

  Two 1.0-C charges have a mlls1g*h )r ,cforce between them of 1.0 N. How far apart are they?

  The force between a 7 cz *lmt9w+lm$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exper7opm ;tnlm5b4 *f bz2kience a 1.0-N force. If they are moved to a new separation of bm ;5z47p*ktmlb on2f8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fnbd 6g+ 8g:bzb- esm9o17 ljeairst 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 chbd-e:b9 a +m87les 1o 6bgznjgarge at the origin?

  Three point charges are placed on the x-axis. A ch2ohuq(r:7g 9 (g4 cyds s)dzaqarge 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 t 9sdusa orcd)g7hq(2 :gy( z4qhe electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x = us.(tdb2d*qk8ot r uz* p l5-s1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x =tdkob58lp2**tuz( qrsd .- s u -1.00 m. What 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, and a second point chaka*q6;i,a bearge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 Naek; abi*a, q6 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 = -1.0 nC is at (0, 0.10 m); Q3 = txhoxi(6pd5 ) 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC5 xtohxp( 6i)d charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is s cdc-z h6 rc6xa qi46 /dr9/dcg)6igzat (0, 0). Wha hi-4zdcg9caxsd gqidrc )/6z6c/ 66rt is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at tsaq*uw,/k)eq s j(, ughe vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force ea/uug s ,,*wk)(sq qjwhich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which arx0 gkmb*0;p67lul xuw ,.hv nge separated by 3.0 m. At what point,kpgg, hw*x; m 7uub00.v6xlln 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 zero?

  A +3.0-C charge is at the origin and a +9.0-C: j67+of6xnys ikj h3x charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so th6sjy x7o+ khn:fj xi36e net force on it is zero?

  Charge +2q is placed at the origin and charge -q ispydx +ct1 it /dgt84xhywm):( placed at x = 2a. Where can a third positive charge +q be placed so that the force/wd)x t:xdiypmch y8( 1+tt4g on it is zero?

  A copper penny has a mass of5xi mej k06+r-7m tdyo 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 byf0j 8d*0twut c the attraction of a fixed proton some distance abovewd t*0u0t8fjc it. How far above the electron is the proton?

  Two 0.20-g metal spheres ar5jq gt1yh,3p ee hung from a common point by nonconducting threads which are 30 cm long. t,5y1 q3jhepg 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. What is the magnibppzpjm ,d 2.fk2um 2tgq +/;ptude of the electric field at a dista2/ g uk;q m2 2fmppzbp+d.jp,tnce of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dista8x9f.u2(g)b iaz (kwbqra f2o3 :jgd mnce of 1.50 m from a 50.0-nC cha3fra(u.i xoa)g8q: zjmfgd( bbk9w 2 2rge?

  A 5.0-C charge is 10 m from a small test charge. What is the mag nxniwa +ar, j,8q :4k2yo5qvanitude of the electric field at the location ,oax v8nj45air:y,kwa 2q qn +of the test charge?

  A 5.0-C charge is 10 m from a small test charge. ,95 f h9+ldp bg2mtmlvWhat is the direction of the electri+vf,5hl gl mt9bmdp2 9c field?

  A 5.0-C charge is 10omj 4xb1.s0gl m from a small test charge. What is the magnitude of the force experienced by a 4m.gsoj 0bl1x1.0 nC 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 distancu z9-lonhft4i39 ei. fe of 4.0 9l4f9n iuo-iz3.fthe 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 mark of a meter stick and a -4.0 mC chamnofn kzo/q2q29:6jm gur 1ge2 l*j2hrge ism k/loqu222ejjgm2hngo:69r fn 1z q* placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 1 tlazbr4nt0, mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zertz1alrn4, t 0bo?

  Two point charges of +3.0 mC yunr)r;:khm+ ed g7h8and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of them:;y h8 nu rd+r)7eghk electric field at the point midway between them?

  Three 3.0 mC charges are at the tt3m4xns: (* wvm+vec6jar cqs 2 ez+;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 scz*e6 v+3 q 4rj:stmm;v2wtc a xn+e(the square.

  Consider a square whichn3ktnu,-6 apwzg9 /m8n r1s wp is 1.0 m on 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 mC at (1, 0); -3.0 mC at (0, 1). What is the magnitut86 /w9gua-3rnpk sw n1p,zmnde of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC whenj cwpejhij jv.,k0-27 it is placed in a uniform electr.-cpj2jj,vw kjh07i eic field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass olv;7 nyja i;k(f $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120.lr4nl2x gtym24worj z 5k09w g is placed in an electric field of 6000 N/C pointing downward. What chnt 5jrkx0ylog.w mzr244l2w 9 arge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charpnhv(o 2)jt(bge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended a vt(j) n(bpo2hgainst the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a c7p1h7km s hsqkqhu+)(harge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere'smhks qh)1kq7 +hp7(us surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. W,irui.yaymyp w; 15v8v,; zgbhat is the electric fiy 18r,au m.vviwy z, gpb5;y;ield 6.0 cm from the center of the sphere?