State the law of conservatiokd2z)4,bymfa n of electric charge.

  Is it possible for two negative charges to attract each othes fg()uv0u hv 7;;dxaor?

  Is it possible for a positive and a2il1p2 gr;qv5fw jf7s:lg ,gn negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Durmyk41/q (pn6gi 8upj k)pg,bcing the process the glass rod acquires a positive charge and the siln8,gcqpkj4)y1ig/ kp6 u(b mpk

  A proton carries a

  The model of the atom showsf.t )wcve9r/ jf sau*/ocbb5 2 a

  A neutral atom always h 5u; a).sfdfbxas

  An atom has more electrons than protons. Th c60(xz7we0jl9ujnj d jxz9 1he atom is

  Materials in which the electrons;bbrx6k .n vrfb a-1d4 are bound very tightly to the nuclei are referred tfb rk4vx -bn.r6a 1db;o as

  Materials in which the electrons are bound very loosely to them mc8x-u,f /ug2d*giisjdv k 2p 3x2c1 nuclei and can move about freely d vcc2-, dgkmiigs/3 x*12p2x8ju muf within the material are referred to as

  A negatively charged rodaqwk.ns+lq; z1(xj/m 9g hvi2 is brought near one end of an uncharged metal bar. The end of the metal gwlqk . zhq19;a2jv+nx(i ms /bar farthest from the charged rod will be charged

  Sphere A carries a nf-e+pk q-v75a yexi 5tet positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. it7 v-e5a -5+e fpykqxWhich statement is correct?

  How can a negatively charged rod charg 0v 5euaapur5 r;2mdn:e an electroscope positively?

  An originally neutral ele/ gj:ii29 hc,k;fd4k8jvaitectroscope is briefly touched with a positively charged glass rod. The ele i24ife 9cah8 tid/ ;vkkjj,g:ctroscope

  An originally neutral electroscope is grounded briefly whi o:agt/: w:wiwle a positively chargeow: twg:wi/a: d glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral o*oy:v73dqerna. g2dt- ol9g electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Wro3ave7ndg d9 ol: go .-t*q2yhat happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutralh6 h 4tri:o)tz 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 to:4h ri)th z6on each ball?

  Charge is

  What are the units of tc8af; kiqbgx aa /-z-z6h :e,qhe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are sepe3qd+)x 9xp4 /hpvnutdux5 g7ttdmh *4tu/g 5arated by a distance d. The first charge is larger in magnitude tha 9xuvgdep7 tt+*n ud4 5)g/4/pqt53dxhu tmhxn the second charge.

  Sphere A carries a net charge and sphere B is8gj;3bj onu4p neutral. They are placed near each other on an insulated table. Which statement be;uo48j jgbp3n st describes the electrostatic force between them?

  Two charged objects attract each *k6t kn+j6fu pother with a certain force. If the charges on both objects apfjk6n*tk 6 u+re doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forc gosihtf4.+ 2l3,qgt.ft;c(npt p8iyes of F on each othe3gotq8+p,i.4s2ighyl nfctpt ;(. ftr. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects aq/32v rd/e *wyaogz-rttract each other with a force F. What happens to the force bety/ 3g rwvqa*o -/2rzdeween 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 force is now equal to

  An electron and a proton are separated by a distance of 1.0 g n ie7vm19eq41srjh9m. What happens to the magnitude of the force on the proton if a second electre4sqe1m1 hivgrj7 9n9on is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happene2( n1b,nzbgxq0r8tj s to the magnitude of the force on thetrbq zj18n0 2,bgnxe( first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0q(jk-rl*x: v* chf 5la8kf ,sx m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the8h5x-sx (* a,ffcvl* qjkrkl: proton?

  A point charge of +Q is placed at the center of a square. When a sevqzy 9/uenmvo: bb)k2 foa+++7d :mjf cond 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 char+ mbubf7nko: + v fd:2 mqzo9/vay)ej+ge 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 equibld 2. nooh;*u*iqa ,t b1s/celateral 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 that acts on the center charge due to a third charge of +Q placed at one of the other vert, 1cl* /nqto2s;iboe bdau.h* ices?

  Which of the following is 5u cb(axco:c1 t6-xcy not a vector?

  At twice the distance from a point cha5blk*ej( d0nsu go0;cun; b8arge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative andh nq;ry 42ac(x positive charge along thyxc qrn24ah(;e line joining the two charges?

  Is it possible to have a zero electric fddjh8hi+l 8)bnupe /mx6 :7ilield value between two positive charges along the line joining the two c+dl8:ni8jbpuhm 7 6/ ixehd)lharges?

  Electric field lines near psitive poinz ; tzixy65aw9.,vsddt charges

  The electric field shoc)ak a 5v7n:hown

  Can electric field lines e5(vpp bxh+ cpf75y d)intersect in free space?

  A solid block of metal in electrosgk8 xnuz.- q2ptatic equilibrium is placed in a uniform electric field. Give a statpqnu2-k.8 gzx ement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of eqayk p 6idd5x-,ual diameters are each given the same charge, the electric field (E) midway between th5xy ad p-dk6,ie center and the surface is

  A cubic block of aluminum r kwnzje3+v5 4/i; dbsvests on a wooden table in a region where a uniform el/viv+ksd5bzjw 3e;4 nectric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibri ih js29+vfyt*uw ,u21(pogm/d leo,gum near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere t) 3 xipnbrp;a( ef+c3that is grounded. As com p 3nexpf3r+b; act)i(pared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors 9,gjgaxq sj o52a1i v9giri ,d 7*tgu1in static equilibrium.

State Gauss's law.

  The charge carried by one 5(e)bazvxu.6b. g :kf sy6owdelectron 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+: fmymejrr,3*cv o,q mC. How many more protons than electrons does this piece of o mvfq,rcj*e3ry:m , +plastic have?

  What is the charge onz;.nolilx cra+:ll -/ df /2wk 1 kg of protons?

  An atomic nucleus has a chargjd elfv+9s)h 1e of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.3g3 ce*xp cjg bai0(k25 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force begpajc303x2(e bi* ckg tween them?

  A 1.0-C charge is 15 m from a second cha)f -kcra)qkkbk.j* -brge, and the force between them is 1.0 N. What is the magnitude o)c.bfk- kr* bkaj )q-kf the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are the0 ,1dku x2h5tiyhuj( sy?

  The force between a cyux6th *)7e)o-z) mycxi / aol4; u(kigj7m x$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially k4/ puqww9s+at;it g,n: pi ;z2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is thpa s4iw unz/, g9:; iwtkpt+;qe electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axipg x r/rzmk,8;s. 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 directm,x/8rk zp;g rion 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 mC is pex 5lo n0yi:9llaced 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 which acts on the c9lx:oy 05li enharge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at t jd( nvoio2h6m*,t9lp41fer rgf,c,x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is tod ,6vit p r,l*c4h 2mj9to1fr(n,egf he magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a squah/ufjjpgt6 lio)a(.) jo f13v re, 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 fafj)i t) g/juoj6l h3(.o pv1third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0)4(2oz-v :gbgg 1 atqqr; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC cg2grgbt41q (qv:-z oaharge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5 mt: :nkv;9ofymoy8* n.0 nC is at (0, 0). What is the direction of the net fofk;v t9:m*n8:oyon ym rce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed cfp4 3/zvguz- at the vertices of an equilateral triangle which measures4vpz3g f- /czu 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 are separated by 3.0 m. At04grq)pf3j q h: mzgde:r ;nl) what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic fehrf:)j)g: lqnp r g03dzq m;4orce acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge, lpd0jb,p xv+2zoen7 is at x = 4.0 m. Where on the x-axis can a third charge be plac0pn bz+vj7eopl,d2, xed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placedwgz-fd 0,ye2/m sashh 8: u(xl at x = 2a. Where can a third positive charge +q be placed so that the force on it is m zyd/ s s:0 g8(-xalhfe,u2hwzero?

  A copper penny has a mass of 3.0 g. A total *2okm mhdr7 bd7rgr-8of $4.0 \times 10^{12} \; electrons$ 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 ow ysp t g.8:bo.xr :gq)zz-ca,f gravity by the attraction of a fixed proton some distance above it. How far above the electrongzxc 8p:qtsa):yb.wz -o, .gr is the proton?

  Two 0.20-g metal spheres are hung fromtur(aj ukktg o5 l)3t/ t5b).g a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electroslt u.3u/oa (k tg5r5jb)k)gtttatic 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 tz uyfi+v1 r2v z7:k vb/jrzm8;81px pyhe magnitude of the electric field at a distancezjv27 zyv;1kr b 8vzr1xu/+ :pifp y8m of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance+.0q:hbwc1qdoq 2hk p of 1.50 k0 .qc2hpwoqbq:+h 1d m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test char(veoptk 8 i02v*fefx 0ge. What is the magnitude of the electric field at the k8if xee0*o tvf(v0 2plocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction oko:w46n wffh5 ecw ;c2f the elekn6fwo4 w25 wc fc:eh;ctric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitutcx6x xucrnint ,+6x2: a4:xd r/oi6y+p -uca de of the force experienced by a 1.0 nC charge plac ax+4xc rc,pi66:xidcx u-t6+2 :nytxr u /oaned at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distanc2bc,iq;dhje 2 e 26qoge of 4.0 m. What is the electric field at a point midway be2qe ec obi2jh6q2g d,;tween the two charges?

  A 5.0-mC charge is placed at the 0 ord9j d; w:y6/ ,ecrn3d byanm3qlr-:cm mark of a meter stick and a -4.0 mC charge is placed aoy 9,cw/:3ra dyqdbmn3nd rr;-je6:l t 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 sti6c1n4)clxjw tx6if v ;ck and a -4.0 mC charge is placed at th c4vjc;6nw )f6xt xil1e 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/4bru 2*nz 8agymn g4d -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the poz yggadmnu4b*4/rn2 8int midway between them?

  Three 3.0 mC charges are at the three corners of a square,gf)f2u5h due of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the )h5fu d, gfue2center of the square.

  Consider a square which is 1.0 m on a side.a3 go5f+ gvq+b Charges are placed at the corners of the square vg++qfo35ba gas 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 magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC wh/xdpm *6f /1q.nb r9vh+uyeyqpaww6- en it is placed in a uniform electric v hf96u qpqn yemb/xd6wa/p1r.-+ wy*field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC h*8ezylh9xj/mvt -esa(k 5)ugas 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 0.120 g is placed i2iw (6dgd g0svn an electric field of 6000 N/C pointing downward. What charge must be placed on the dsw6v2dgg i (0ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of nnv2d;l(x d)s -2.00 nC. The ball is placed inside a uniform electric field, and is suspended ag( vn2x;)lsd ndainst the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chargbl.ne ba4p7 qvo.u83z e of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfa.a l7qu eb8.b3o 4pzvnce?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is thenb8lfq-m)m( t electric field 6.0ft- q(mlnmb8) cm from the center of the sphere?