State the law of conservation of electric charg4cnm-s 43wxw he.

  Is it possible for two negative charges to at.+jkpvh6/067 zvj a9 ymv wofhtract each other?

  Is it possible for a positive and a negative charge t.f kd8c7jq5r;1nwfuaiv1n8+ *j tvpy o attract each other?

  A glass rod is rubbed with a piece of silk. t5lu*. +/w djz h/oa 4l;wehcek 1e9)3iapjfjDuring the process the glass rod acqu.lw wj ua1 e35ej l4id/afk eh/h*t;c9)p+jz oires a positive charge and the silk

  A proton carries a

  The model of the atom:r 66-)bzvu 2clqwvrtjuk9 :p shows a

  A neutral atom alwaysyaovo4 ro) pvgb 6m8v .5u90ss has

  An atom has more electrons than o-nd)pm,mn w -protons. The atom is

  Materials in which thevg-pt zt1 8d+c electrons are bound very tightly to the nuclei are referr pvtd81t+g- czed to as

  Materials in which the electrons are boun9xej-.mwq*n bx33 ybrd very loosely to the nuclei and can move about freely within the material .xrn3w mj 9be*qx3yb- are referred to as

  A negatively charged rod is brought near one end of an unchatbm.y ;-) k,iac1akvp n zm51w r8vxb7rged metal bar. The end iban1;) 7, my1vb wt pcmr8k-k5xvaz.of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net po +x( yvoumi9k;6uvy+ie;wox;sitive charge, and sphere B is neutral. They are placed near each other on an insv9x oo iv+xmuk y 6iu+y;e;(;wulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively cha :1g+*,telgbc )fslj erged rod charge an electroscope positively?

  An originally neutral electroscope )irj nystk550 -)tgs u +30fkhj,nltgis briefly touched with a positively charged glass rodgsu n )5,l+jg nytt3t-r jfski) 050kh. The electroscope

  An originally neutral electroscope is grounded briefly while p lx)7d8, xn,jf) otmca positively charged glass rod is held near it. After the glass rod is remov 8nxf,ox7)),tjp cml ded, the electroscope

  A positive object touches a neutra3hd:,nfu;vuzqfg ya sw56 + j9l electroscope, and the leaves separate. Then a negative obje+;uygu,h3fja6f5w9: q s vdnzct is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is .x r4 c oms0k0*)jp)lq.romr)(fxdg bplaced on an insulated table. A neutral metallic oxj) f rcbo*rg(d)l4m.xms0 )k.0 rq pball 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 ball?

  Charge is

  What are the units of th t;2w. zxf: myor/ /asqu5yb4de Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a di1 n,8pl/x kgr vg6qh.,8 jxmcrstance d. The first charge is larger in magnitude than ng8.jgmpqck , xrlx8 r6v/h,1the second charge.

  Sphere A carries a net charge and sphere B is neutral. 6 l;vss(slyk(dgy:-ka;vcg 0 They are placed near each0vvs(;ykgd6-yal:k lc s s; (g other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargn u8:pgjfni t8l2j9k 2es on both obj8nn 8f gitjpjl2uk2:9 ects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual rt7hv y+ayz.h3xs: ;d attractive forces of F on each other. If the chargd:;7 a sxvhht.3r +yyzes are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eac7 )t8q puki(fdh 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 bt( 7kd8ufpiq) etween their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by acelc( a;1gv/v distance of 1.0 m. What happens to the magnitude of the force on the proton if/1(vvcl; caeg a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance oz 6lv-0v jz5quf 1.0 m. What happens to the magnitude of the force on the first electron if au0q vz65jl-z v second electron is placed next to the proton?

  An electron and a proton are separated by a distanc2h1+r 1*/ 2lxzi1usxks4kd e-n o rscfe of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 sixkd1-r sxuc2fre +kl*h11 2/sn4z om closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second 9t0vb2r5aguw +el,y vwt: 1vi 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 electrostatic force acting on the positive charge at t uw w2e bvl0tg 51,+9vtr:vyaihe center of the square?

  A point charge of +Q is placed at th ucssa.x +qtr.k/g-mn 8zqt3(e centroid of an equilateral triangle. When a second charge 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 3k .+za. ru(n8-qts cs mgqx/tthat acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followic60-ildqd:/jw2 crdlnqrb :;ng is not a vector?

  At twice the distance from a point ch)ko* suy4lsw0 arge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and pov 5j:iacv 6ks l5gqpf0cr+ p,nj1i 6:usitivui51g a+r6q :,6ksvvlf ji50pjccpn :e charge along the line joining the two charges?

  Is it possible to have a zero electric field : delv8g;/: y5x-avr6dpywlvvalue between two positive charges adlyr-6 v:apgyv: ; xv/w58l edlong the line joining the two charges?

  Electric field lines near psitivekhn735gpyt o0vn9 6g+o8g lpj point charges

  The electric field sh6z, .axfbqa pa37h .bsu5ii6rown

  Can electric field lines intersect in free spalr xr8pm0 s9)sj p*gd0ce?

  A solid block of metal in electrostatic equilil74f24y /vrbg4 p/fy pqctui1brium is placed in a uniform electric field. Give 2yybp ufi / p7c4t1rlv g4f4/qa statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollo- 51(1bdgt9eocwia1g szo j f9w metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center ag 1i da1otw bs19o z9f5ec(gj-nd the surface is

  A cubic block of aluminum rests on a wooden tabw 9pwhd,i)0+v l h8mpble in a region where a uniform electric field is directed straight upward. What can be said concerning the charghl0 w )+phw,m9ibvd8 pe on the block's top surface?

  If a conductor is in electrostatic equil k*xnwtpgqx:(4hv8i ;ibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gre02 chpi8s5v+ 7hbh acounded. As compared to the case without the hollow sphere, the electric field at a poiha 0bcs7h5ie vcph2 +8nt directly above the hollow sphere has

State three properties of conductors in i ynq e0x;.km3o(bs;estatic equilibrium.

State Gauss's law.

  The charge carried by one electrowodq1 cvo e7tg ;-.vq6n 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 protonyhzv46b i0sk6 s than elec k4h6z bi60svytrons does this piece of plastic have?

  What is the charge on 1 kg of prcxws6 c2gd;+vj(/qwyw,c6 x motons?

  An atomic nucleus has a cha)hv nnmx t/h:.rge 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 2hc87)sffw 6qm.0 and -4.0 mC, respectively. What ifqm7 scwh)f86s the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the2 56.jckxuna dg:(d ti p1crm+ force between them is 1.0 N. What is the magnitude of the second c k2tj.c5di ua:(rd+p 1mx6c ngharge?

  Two 1.0-C charges have a force be j:i3f nuy r-2m0sfe1gtween them of 1.0 N. How far apart are they?

  The force between a -igx; 5n+exdq i ww28k$30 \; mC$ 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 (0auh 9q v. bm6+o 0 werhbi.k2vzove/force. If they are moved to a new separation v/ei9 hz w2h.qvaube+(v . 0rmbko6 o0of 8.0 cm, what is the electric force between them?

  Three identical point cham mvhuu m3/ds.b tvm3x.:98dorges 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 wh v9m.ou hmm8x3muvd .d/ s:tb3ich acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 w sb4 ;y d8dtes-2 ufm1.9elglmC 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 di be8mdldwg.ftus y2 e1l;9 4s-rection of the 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 = l3 w6bm;ym ov/jn:v pudbr(7x08t 2e j1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of d6njwy v(lox:8umt jrbm2ev30/ pb7;the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a xhzwk 0dk9z**9bjx7t square, and a second point charge of -Q is placed at the upper-left corner. Ith0k*k9z dw7xj9 bxzt* 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC b ue:g8cqw j( (k29rwiis at (0, 0). What is the magnitude of the net force on the 5.0 nC ch9k (rjw w(qbe8u:c2igarge?

  Q1 = 6.0 nC is at (0.30 m, pmol7m8/w qy/0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What /yo/ qmw 7plm8is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices o yc51xx76suy7pv b:y if an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force whic76vu7xyi5psy: bxy c1h acts on any one of the charges?

  Consider point charges of +Q and +o8hr-lcq y31pzc9v ) 5d lj*sy4Q, which are separated 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 that the electrostatic force acting on it would be -5ychlz)3 v1*8l poq cd9srjyzero?

  A +3.0-C charge is at the origin and a +9.0-C charge is(r6bs,g5 vyg3 ti:hnw at x = 4.0 m. Where on the xgg (: 6ws5,tv3hyi rnb-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -xas7,i(sa;kzf5skfix 7;a khc t )q82q is placed at x = 2a. Where can a third positive charge +q be placed so that t (5s qkaks)tz;fhix,ci a; 78fkxs 72ahe force on it is zero?

  A copper penny has a mass orja.;;2g0m( p7iu7 exi q (b6nxeyz yof 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 attraction of a , uam yi w(3xvwi0(;zhfixed proton some distance above it. How(a zy m3 w;h(wivu0i,x far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting 24k uutb(znf5 u.gg(ithreads which are 30 cm long. Both are given identical charges, and the electrostatzuu2 5.4(uggfk( inb tic 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 magnitude of the electry/ csqumap:y;t0s,:(oh6ol s o2acg6ic field at a distanceah2,t s/yao6: 0c (6so g;c:l upmqyos of 1.0 m from the nucleus?

  What are the magnitu 51,abat 0z1fbrc6zlude and direction of the electric field at a distance of 1.50 m from a 50.0-n1rfbl 1z z0bua65,ctaC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of hk,adbqso h p0x67qy 6:/fjlw .7qyz:mup r5/the electric field/qqyyq:60w zrbs kx,p5 :6hmoa .u7jh7dfp l/ at the location of the test charge?

  A 5.0-C charge is 10 m fro 8hk62 n uzhvjlim) 3:c;,dypkm a small test charge. What is the direction of the electr:) kvidhupcj8k2hl;y3 m,6znic field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofut)2 uybgjy- 7 the force experienced by a 1.0 nC charge placed at the locyb7 -j 2)uyutgation of the test charge?

  Two point charges each have a value of 3.0 C and are separated by vrfx)u( 7zgu8a distance of 4.0 m. What is the electric field at a point mid z)8vfgr 7(xuuway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter w1t/gsyl7q4g f.m1fl j, -dt2en8 xadhon.+ wstick and a -4.0 mC charge is placed at t.lajydl7f.nnhe+8t1 tds 12w g-mgq/of w4x, he 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 st(qe ( x3dy,oq4o4mcznick and a -4.0 mC charge is placed at (eq(c q4xz 4mdyo o3,nthe 50 cm mark. 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 are placed at x = 0 anhz-- 8qtqmsek i)wi; ,d x = 0.20 m. What is the magnitude of the electric field at the point midway between w8si, -hzkq emiq-t) ;them?

  Three 3.0 mC charges are at the three corners q;ea8/b ;fr eqp z,/ib nd2f4:7guic sof a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at th7/ sbz pq;ir eb,qeg8d;2u4f/nci fa:e center of the square.

  Consider a square which is 1.0 m on a side. vzfos 4z;e eun6(2s;u4b bv7mvct+ds f-+mk5 Charges are placed at the corners of the square as follows: +4.0 mC at (m b2vf6zdbev+vu+f- (;s ssno5 ;z4uke47tcm0, 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 electric field at the square's center?

  A force of 10 N acts on a chargey6w-17-m8vh lfw f hxj of 5.0 mC when it is placed in a uniform electric field.xhv-1 l7w8w-fy hfmj6 What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass ofg8;6sfcql- ug $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0qk(a f7ol) t37fsvux).120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspenafko7)) 7(lxfs3 uqtv ded?

  A foam ball of mass 0.150 g carries a cha/mjjt - 9(ftk,ijaq1kl,e .uefggq( :rge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude qemlu.j:t,g( ig-9e( kqj/1k, ffjatand direction of the electric field?

  A metal sphere of radius 10 cm carries a charge 9cvklpz 7(yn)at-2dm of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphz(79l2tndkm y)av cp -ere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is 8txs3/opu f 1zthe electric field 6.0 cm from the center of tho zu t81/3xsfpe sphere?