State the law of conservation t:f+gqxbir4 ,cvv2p) of electric charge.

  Is it possible for two negative charges to -mupyj)xq9 m-attract each other?

  Is it possible for ar-sob3t41+tx a2 d nnejp7gl* positive and a negative charge to attract each other?

  A glass rod is rubbed8wlnlz017,jsu edc6 s with a piece of silk. During the process the glass rod acquires a positive charge and the silks8lezls1,j 7cdn w6u0

  A proton carries a

  The model of the atom shows sfz t-g:njqh8;wz- 2r a

  A neutral atom always hasr/:a p kczv l:x 9(ps*isw;(yr

  An atom has more electrons than protons. The ibi,k /*,-adspt4z my atom is

  Materials in which the electrons are bound very sp)imqg y,p gf4-fz6 2tightly to the nuclei are referref4y2g, -)6igsqm zfppd to as

  Materials in which the electrons are bound very loosely to the nuclei and canb ;y p orm zmggja9053y;/sto; move about freely within the material are r0;/59y jgpm;o;zgm3y bstao referred to as

  A negatively charged rod is brought near one end of an uncharged m0y+ mzkz6np(vai ql+1etal bar. The end of+zniv1k( +y pmqzl60 a the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral5q m)lf jji9i+. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is corr+9 l5jj)i qmifect?

  How can a negatively charged rod charge an electroscope po9b9 tfo r*2ehj2q6 h7/joydby( 1ptcnsitively?

  An originally neutral electslj)m;i wrq 56nsh2k 5roscope is briefly touched with a positively charged gl iqnkwsr5h)s52 j 6;mlass rod. The electroscope

  An originally neutral electroscope is grouah *6ucf 3tej;f.pncxn 0yh)2 nded briefly while a positively charged glass rod i3x * tpufnjh06en. fc hy2;c)as held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leavea4gt+ wc5ow9io,/q smh8g +mgs separate. Then a negative object is brought near the electroscope, but does not touch it. What happatc/qig gw9o5so 4 g8hw,m ++mens to the leaves?

  A large negatively charged object is ( vqo0:)2q-rfym cf de zfu:b*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 followe*r:yom vqfu-(dzc) :ef2 f0 qbd 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 the Coulomb con 0yh lpj8rycy,9zh)l: stant $k$, which appears in Coulomb's law?

  Two charged objects are separated bvd 4ot2;zjz-py a distance d. The first charge is larger i;vz4opt jd2z-n magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral1 gn0l;jy les.71ar ru2r:qwg. They are placed near each other on an insul;r a2gn0eqw rju y:.1ls7 lgr1ated table. Which statement best describes the electrostatic force between them?

  Two charged objects attry pur n62yw5le4m l o/1/ic7jract each other with a certain force. If the charges on both o/2e ju ywylil7m/ 1rpnc65r4objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mut e-6tjkff8 (lunf/ms-ual attractive forces of F on each other. If the charges are separated by a distance of d/3, what a /stnf6(efmkfu 8 -jl-re the new mutual forces?

  Two charged objects attract each other with amaiib7d3x/*wp7xq ky w82v3xw h qt/;s*,j hp force F. What happens to the force between them if one chav x/a7w*3bt/kwx 3 mqh*jwysq,8p7xh2 i;dpirge is doubled, the other charge 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 protonp09o,ixp(o6j6n ezj) py8c 8gxjqsr8 are separated by a distance of 1.0 m. What happens to the magnxpgiszec x joy )joqpjp8r96 ( 8n,680itude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proto4 ct u*un+h6nrgj i3xkh2 .u0on are separated by a distance of 1.0 m. What happens to then63 h4itcgj2 *ru0uh u k+nx.o magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separagf0wxyl9ju-t b9b0 6 wted 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 protubwb9 0j6fw -9ltx yg0on?

  A point charge of +Q is placed at the cennynx+h x :a5n,9tbcl *ter 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 2cna*h+n9y bxntl:5, x.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 triangle.f/43i .fa+o zhsjwaf)6xl8zo When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts onao3w ij /8) xz6 o4flsf.+azhf 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 ah;9uvkda-bm8hb o;z/dic ;*r0roaj r x0kp 4+ vector?

  At twice the distance from jbey dt7om7p8 ,vy:+o a point charge, the strength of the electric field

  Is it possible to have a zero electric field valvx7nux ewbcie ajl3.j 89h.3)ue between a negative and positive charge along the7.8 h33e.abnjjx e)c x 9uvwil line joining the two charges?

  Is it possible to have a zero electric field va): ysn8r,w2o6m;gwv3b*f urj h cjut-lue between two positive charges along t) m ofwb*rcgrhy- uj nsv86;3jut:2w,he line joining the two charges?

  Electric field lines near psi)h5nwp(yskwgtbi5j-* u; * q ntive point charges

  The electric field sp/3 ytd2. dmhp68 sioxhown

  Can electric field lines inbn )a*s8us) actersect in free space?

  A solid block of metal inrm )xs f*eu3v2 electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric fure3 xm)vf*2s ield in the block's interior.

  If a solid metal sphere hq 0 :kol563unnj 6msaand a hollow metal sphere of equal diameters are each given thehqm u6ok asn30lj65: n same charge, 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 t j(8 kr1ic0 bye88dfxa uniform electric field is directed straight upward. What can be said concerning the 0 e 8 8dtcibjxrky1(f8charge on the block's top surface?

  If a conductor is in electrostatic equilib g 9q h-4lqig*5*xmepbrium near an electric charge

  A positive point charge is enclosed in a hollow metallifp1wj 5je(z/ lc sphere that is grounded. As compajfe5z j p/wl(1red 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 eqm r3: 5a.p.ua uwv0ir27qn smquilibrium.

State Gauss's law.

  The charge carried b,gk6jj qmp:*rd48t doy one 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 ne)wa.ggf :/s;ip reo9r)b :kezt charge of +2.00 mC. How many more protons than electrons does this bpf;. sg g:wzr9)r):/eoie kapiece of plastic have?

  What is the charge on 1 kg off2c6p71e k14d s,bgycc0zcuz 9pg3x luv4f(q protons?

  An atomic nucleus has ijzjp phzo*i5h3s 1u;sf89d, 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, h7y.j)uz j.awvave charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric 7z).a jy.jwuv force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betweeuva 8d-.(epe, fak 5hed2 jjk8n them is 1.0 N. What is the magnitude of the secoj 82ah .e(5pau-8 eek,dkdjfv nd charge?

  Two 1.0-C charges have av:nnj)e(bnldz/:* w j force between them of 1.0 N. How far apart are they?

  The force between a y.o pd8jsbt15nnz2(b1q yxx( $30 \; mC$ 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. .ua86zpy -v(v+pzkdlsfl / v/ If they are moved to a new separation of 8.0 cm, what yl-z /p +l.fau6k(d8z/pvvsv is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fiwu*cr1d5 :huirst charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. 5 hd* iw1ucr:u 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 chambtc8z su (n*2rge 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 anb (mcn2z8 u*tsd direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at theknc7 q, v9:urt following positions: Q1 = 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 t,uknr qt9c7: vhe magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of gdvi(nt9 :u n4a square, and a second 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 corner:tiv 94d nung(?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is s6wrhcy7,8i,tpv- x sat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5y78,hr xs,-tv spi6c w.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.+2p/yfdqjrc 61 :vczz10 m); Q3 = 5.0 nC is at (0, 0). What is the direct6c2cvjdf qzr+py/ :1zion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed 5j8 l+uqfqk.4ij p eyw3m*l3p at the vertices of an equilateral triangle which mp48jij 5u3k*plywm+ql.f e3q easures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which arefxe* z1i5 gp u8nbn.xxm2a7x* separated by 3.0 m. At what point, nfg*1*p x xamnu.5xizxe8b72 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-)a u 6c;/snx f(bwh0.n ax/revC charge is at x = 4.0 m. Where on the x-axis can a third charge b;n(fxu/ wavxes n/b6hc)r .0ae placed so the net force on it is zero?

  Charge +2q is placed at t4 z 3fz sh:)yi0w)detlhe origin and charge -q is placed at x = 2a. Where can a third positive charg 4s0ztf z) ey3wld):ihe +q be placed so that the force on it is zero?

  A copper penny has a mancb :*bxt,+fwc+l;z v 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 theyro:zw 5;pf lf: 8wist *g7j1e attraction of a fixed pg78jf :wys e lf* rp:1z5i;otwroton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal sphe9dvc ide9 y7tj- ejv1;n+7phores are hung from a common point by nonconducting threads which are 30 cm long. Both are given id dp +cy;1idvv7jjeo79 9ent -hentical 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 magnitude of the electric f2tjl3clcb - l*i l*3bcljtc2 l-eld at a distance of 1.0 m from the nucleus?

  What are the magnitude and xu/ gv/*uub3adirection of the electric field at a distance of 1.50 m from a 53/ uuvaxug/b *0.0-nC charge?

  A 5.0-C charge is 10 y4wys wq74re; m from a small test charge. What is the magnitude of the electric field at the lrw;7ewy q44syocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of th , vqq w9bi qw4ue2n4csa6q,f5a:gc 0ne electric fiel aqfng: aq,c 42nuq q,w9ic5v6ews 40bd?

  A 5.0-C charge is 10 m from a small test charge. What is the magnie/knsc5oa db1djo j (88/,tp dtude of the force experienced by a 1.0 nC charge placed at the locati sj5on akc88d/e dp/bto( jd1,on of the test charge?

  Two point charges each have a value of 3.0 C and 2d/dml55 fza pv j8k*pare separated by a distance of 4.0 m. What is the electric field at a point midway between pmldavk5p j2*5fz/ d8the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of ame-zg /n*9)vg uw;t5j .ihkgq meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field a k ni;)h mez9*wg5v/j.ggt- uqt the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a metk jnq u;(v2qy(er stick and a -4.0 mC charge is placed at the 50 cm mark. At whvu ; q2((kjnqyat point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and :e/v0 )eg0*ualbespy -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electril)ue ba eg0/e 0p:vy*sc field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squa 74z7u r2czg-9 mf5v1 ofvufkkre of side 0.50 m. The last corner is occupied by a -3.0 mC charggkv77 -uc4kmfrfv9u12z 5z f oe. Find the electric field at the center of the square.

  Consider a square which n9v dzk t-/3iois 1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, /d-39otnzivk 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 charge of 5.0 mC zo*:fm-h8ky9+mr;fc7 w lm qkwhen it is placed in a uniform electric field. What is the magnitudlk ;*mfk-z: r8hyc+w9mq 7fm oe of this electric field?

  A particle with a charge of 4.0 mC has + me d wrarj65eik22x4a 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 g is plawew0c:j5a 5be u6uoux7 2qab3 ced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it tcu6:jb 3u aaeu2xq5w5oe wb07o be suspended?

  A foam ball of mass 0.150 g carries a charge of -52h + d7fvteby2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electre vh+ft7b2 d5yic field?

  A metal sphere of radius 10 cm carries ait 0ns:izw *:i charge of +2.0 mC. What is the magnitude o*nizii s: :0twf the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is t o+ c/qh+w8qsx s7r-vihe electric field 6.0 cm from the center of the sphqc+qsi7vrh wx+/8s- oere?