State the law of conse 4cqsi 1tef9slq3.o;kv4r. x ze9se o*rvation of electric charge.

  Is it possible for two negative charges to attractfys,*/:s nchbxr e19t each other?

  Is it possible for a positive and a negative charge to attrk*w de,k3o h7vz t2w8jact each other?

  A glass rod is rubbed with a piece of silk. During thqbb 4/0 *0esvik8bqga29dn :i +vs bns.zqy0le process the glass rod acquires a positive charge and the sii9sl.bnvn:0*/sqb b0y0+ 2q q ezads bg 48ikvlk

  A proton carries a

  The model of the atom showsrida9 n(l.h;d;z 63 g1yl ahcj a

  A neutral atom always2y ftu(ivqde -k+ b9(f has

  An atom has more electrons than protons. Thxuj 88 /lbxxv4e atom is

  Materials in which the elec/t, r q ;jdwox4j)q8udtrons are bound very tightly to the nuclei are referred tj u)rdo8q /xtq4j;w,do as

  Materials in which the eltf-ldhw wu4f96;00 )qmpr ib,eetc g(en xp,*ectrons are bound very loosely to the nuclei and can move about freely within the materipf(q0tm,w, -gi n t 4;6wb9 pr*)xdclueeefh0al are referred to as

  A negatively charged rod is brought i ,ky 93j5nxqjxd v2z8l7: xuknear one end of an uncharged metal bar. The end of th2x n y8xk,j 9vd7zkjil:q5x 3ue metal bar farthest from the charged rod will be charged

  Sphere A carries a net posqcj1) muclsuz7t +*0 jitive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere Bq1c0j*7 u+ jlc)mztus is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chiv.g)fo vm n) /ocudb;flq/93arge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charged zb1:v/bjh6 a)r hd+ys2 z y2tsglass rod. vbr) +1j y ht2baszdhy/s:62z The electroscope

  An originally neutral electroscope is grounded briefly wh0 :gtu7ru:qmwtm 89 quile a positively charged glass rod is held near it. After the glass rod is removed,qmt r:70qtuu wu:9g8m the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. The3akj:lymp6 e g s*j.-x)if 4pnn a negative object is brought near the electroscope, but does not t* kj)gs fiea6 p-4my.n3jpl :xouch it. What happens to the leaves?

  A large negatively charged object is placed onda)7p9bli3+ ue1mven an insulated table. A neutral metallic balb3up+dee a71 n9lv)mil 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 the Couy9xp 4ypp f*n;lomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge i3xz1r9j hwpzw8: qap) s larger in magnitude than the secaz jqp8hwpx9:r1w)z3 ond charge.

  Sphere A carries a net charge and sphere B is neutral. Tn t pozmitb:;k :0y4d(hey are placed near each othery 0tt 4nz;:( idkmbo:p on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects a/cv qrh-ebzk)*g,e.attract each other with a certain force. If the charges on both objects are doubled with no change in separation, the forcer-)*. /hgabcze,e vkq between them

  Two charges are separated by a distance q gwkwln d.1rwq 4ovm-*9 t+h7d and exert mutual attractive forces of F on e-dg kwhq1ow9r+t 47w.*ln mv qach other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attggn (6.gz6f vwract 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 is reduced to one-fourth its original value? The forc6gfwgvn6 z.g( e is now equal to

  An electron and a proton are separated by a distance o-h3)ck/o w fs v zwq:)xfv*fw-f 1.0 m. What happens to the magnitude of the force on the prwov)c-f-qzvf/w f*3w: )xhks oton if a second electron is placed next to the first electron?

  An electron and a proton arf x;7m xejf.m.bhkt+ykb+h9fip 2h 0+e separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron ik+b .0; 9xjf2x mhyb khm7++fithpfe .f a second electron is placed next to the proton?

  An electron and a proton are;-m0drd;o 6;osd :oypqxma /n separated by a distance of 1.0 m. What happens to the size of the force on thp0:oq6dom; a; sx/dn ;d-oyrme proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center)o 0.ks vl57juo*i*6+f x.hf;d yd7 cozukgdg 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. 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 fl*dg0 odu )jk7ioy x. 76ghzv fdo k5+.s;*uccenter of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangw5x6 mb0m 02dyr4w igxle. When a sec450m bxw6 i wdgxm2yr0ond 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 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 vectorv-ca 8tu ; tb.aoes/r-s6 at,b?

  At twice the distance from a pog 0(5ckhx8wx-ephik7i - v6rg int charge, the strength of the electric field

  Is it possible to have a zero electric field value bexti.o+ m7 rjvh(c:zbql84j -ov: /szatween a negative and positive charge along the line jvmhl4oxq8vz jb/:( t a .:ric7-s +jozoining the two charges?

  Is it possible to have a zero electric fiie fg0 kwrb32 tmw;q(.eld value between two positive charges along the line joining tiw .t;23b( kqgfrmw0ehe two charges?

  Electric field lines near psitive poinn5++q f wosk ob-*v1e0t im c*h6flfg3t charges

  The electric field se g*crzzcpsm7:. 6)wchown

  Can electric field lines intersect in fre:fja2v q94ue ie space?

  A solid block of metal in electr nqwu,-uu3gw.ostatic equilibrium is placed in a uniform electric field. G-uuq,gu .3w nwive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters sd k itulkwb7-x,o)i ,g-kn 8;are each given the same charg -xd,t)kgkb-kus ; wl oi,8ni7e, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a re;y;3u g:brn l1dzgrb6f4 ( lmdgion where a uniform elec;rb3 fdy (rbu1;lgl 4m6dz: ngtric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrxm fu,b,0- exrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphu8yj.z q,le ,g4 wro*6cr rhc*ere that is grounded. As compared to the case without the hollow sphere, the elec**rgz6q,r ,j4 .8uhcrlocey wtric field at a point directly above the hollow sphere has

State three propertiydfblc:wq9, 3 es of conductors in static equilibrium.

State Gauss's law.

  The charge carried by on9jkf mnl963r ge 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 nmgyt):+7wzfh 3 0w)oksw spyn-/c1 dzet charge of +2.00 mC. How many more protons than electrof+zsw1k 0swd3nzm7 )-yc)/tgphow:y ns does this piece of plastic have?

  What is the charge on 1 kg 3ibcjld dm- 47of protons?

  An atomic nucleus has a chaxmav(*cp rf7,( of qm*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 yv7hc 2+a- )5igvpv*( b qfcet2.0 and -4.0 mC, rc-be)(pvtva+7 cf2h qyi* g5vespectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betg .d-jytnb6a 1ween them is 1.0 N. What is the magnitude of the .-6td1jynag b second charge?

  Two 1.0-C charges have a force between theli3 )xavh.b +wm of 1.0 N. How far apart are they?

  The force between a fip ctv jm k+7d34+w9hs:o3nw $30 \; mC$ 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 acc,9 z-2hwyg sx-iq- 1.0-N force. If they are mohsx,iz wg -y--c 9aqc2ved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The f. heoe93vadu bdc093h* vy4lmirst 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 oel0bha ye 93muvvo4*39dd.c hn the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC blk0 qup2, 018blmc dhis 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 the electrostatic force whi 02ll0b1uqhbdcmp k,8ch acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC aowqr3v 0hoz(3)z v9t xt x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What i(o0)3xo3v9vzqh tzwr s the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center oqc1-j uvg 4ksoi8rs 75f a square, and a second point charge of -Q is placed at the8vugck1o7 qsij4-r5s 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?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); w. y-jys1c o)iQ3 = 5.0 nC is at (0, 0). What is the magnitude of yi yc .jws)-1othe net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 ty:7x*vzjl d.dq8j o ;m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at .7dq:tj 8zd vj*;loyx(0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral-5f- v+b o8jn /jskksj ypb2s0 triangle which measures 30 cm on a side. What is the magnitkvj 2+-nf 5kp0sbos js b-yj8/ude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separauy7*uim3b q(qi/vn/c ted by 3.0 m. At what point, on a line between the two charges, would it be possibc b37v* mn/(/iuqqyi ule 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 charge is at x = 4.0 m. t,,n cla 3o xih )j3bhs,d:2fn,g3 msn Where on the x-axis can a third cha2, lgx3nhj):sif,oac, tds3b3nhnm, rge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q l,6g+cdgu,yp is placed at x = 2a. Where can a third positive charge +q be placed so thycg,6p+ gdl u,at the force on it is zero?

  A copper penny has a p6v( w*ial..:(/oc q rxnveo tmass 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 the attraction ofv1 gdymt 10mb- a fixed proton some distance above it. How far above the electron is the-mt1mg b0 v1yd proton?

  Two 0.20-g metal spheres are hung from a common point o)z8jl/v6 mo8oi0cz hby nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repuli0o/jzov8)o 6 8mlchzsion 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.pv s5fdh;p9s b:pj*z of the electric field at a distance of 1.0 m frosp 5vh* ;s.zjppdbf 9:m the nucleus?

  What are the magnitude and direction of the electric field at a distance of l7.ut;80wa ,trlsi1r szpkt4 1.50 m from a 50.0-sta ir8ls.1z0t k 4; 7tru,lpwnC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o4d9n17yhab wao qf )ae 2soe65f the electric field at 52aw fd71y4nq aobaeo96 es)hthe location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What isbkc +(rl;ekkcx +q8d59oo6 lr the direction of the electrik8 596ro ; (qkcrxedkllo+c+bc field?

  A 5.0-C charge is 10 m frsw6jfq mfc37 +om a small test charge. What is the magnitude of the force experienced by a73fm 6sj+c fqw 1.0 nC charge placed at the location of the test charge?

  Two point charges each have n frw y)4:b0zfa value of 3.0 C and are separated by a distance of 4.0 m. What is thefwy)4br zn:f0 electric field at a point midway between the two charges?

  A 5.0-mC charge is pla sjk5zj.j17pb v* pevtzd5;.sced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. 5s.5s.p7 ; e zdvv kjtjb1*pjz 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 stsl8s15yx7 kv913il uq zh:+md/ xbged ick and a -4.0 mC charge is pls9 sh1xd+: xvqu7zkym/ b381i5gd lelaced at the 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 and az g.8fup1ho;x = 0.20 m. What is the magnitude of the electric field at z; ohgufa1.p8 the point midway between them?

  Three 3.0 mC charges are at the * ouh4vlsbpa w2 /nl232hs4nbthree corners of a square of side 0.50 m. The last corner is occupbs3 bo4n4 22/lnwlhh*v2s apu ied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corner .qhy)8-lko8 v6 vu-bgsi(yq ns 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 (qoyyvs)k-g l 8(iquh-b86.vn0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a chum*9zn hqq jvk 08;-i*vnadj 4arge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this -q0qd49*vvkja *;mn u8 nizh jelectric field?

  A particle with a charg4m 7 m6zx /btguiw/75k9(pkx )mhtfm ve of 4.0 mC 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 0.120nr*, yv6smhp b u ;yt2.3zz4lq g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on th ypu3tqz4sn;zym6bh , lr 2*.ve ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -py,qo+ l (yugd yv2u/+2.00 nC. The ball is placed inside a uniform electric field, and is suspended agains+,pyyv ldqy 2(+u /ogut the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge nxw/8-yruout f;9)qtof +2.0 mC. What is the magnitude of the electrin8ufwq- ;/t9 o y)rxtuc field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carri rb-zo40 eeub*es a charge of 3.0 mC. What is the electric field 6.0 cm from the center of th*boe40-r uz bee sphere?