State the law of conservatr *qh1 ci49dc,j yarjhr(r,-iion of electric charge.

  Is it possible for two negative charges to attract each othe+.ep5j gk:/ k:0jhuf ajm e:ryr?

  Is it possible for a g kc y9hvht28dq z kh2fp,6m84positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the sj1z5+ ln,msuglass rod acquires a posit,u nlsm+s j15zive charge and the silk

  A proton carries a

  The model of the atom sq68.ynp47bz)dd j r sshows a

  A neutral atom alway3+6 cu;y5a )p rkx13ntp xgrqzs has

  An atom has more electrons than pyny) )3t:jqmzv gfz 3,4buxwhu g4 3e7rotons. The atom is

  Materials in which the electronpqt5q.qm* xgxlm: 4cd thz01 *s are bound very tightly to the nuclei are referred chtq0x5tml p1gqmx*:4zd * .qto as

  Materials in which thr+0m/l3c5/fqd xwl lxe electrons are bound very loosely to the nuclei and can move about freely within the material are5ldwxlm 03l+//x rcfq referred to as

  A negatively charged rod is brought near osjw+j5 z 69sas5uo(tjv5f0c une end of an uncharged metal bar. The end of the metal bar farthest from thejvu sfsjz+ 5u5t 9j(5wa0sco6 charged rod will be charged

  Sphere A carries a net positiv*t;*/zqd-s6 cdzwvlzmh*xs 8e charge, and sphere B is neutral. They are placed near each other on an insulatedwt/vcl8d h*;ms-zq*6z*zxd s table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elect(stq2:-psikg roscope positively?

  An originally neutral electroscope is briefly touched with a positively cfcj7qiup*y7n3kb *+tjj9 6xy p57*wd3p pytcharged glass rod. The electx*9yy36pc7 n qjfyukpj w3pcdi*7tjb7t*+5 proscope

  An originally neutral electroscope is grounded briefly whcfmye*+k9fz uq;5h dc4i 3 hw9ile a positively charged glass rod is held near it. After the glass rod u iqfdh9k *mw35y+9cf4c zeh;is removed, the electroscope

  A positive object touches a neutral e;gh7irxr*7:j: ms fxolectroscope, and the leaves separate. Then a negative object is brought near the electroscopex:f7; ox sirrj* hm7:g, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed a.wi;6z bqydp 9fw-uq/ qagca:zx222on 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 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 2wyz;ax:f qqa-iqca9u/ .2b2zpwg 6dect. What is the final charge on each ball?

  Charge is

  What are the units o2yifjfq4 f 1t65ur s-tf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dist m4ruoyj;v(ky s7ex(:ance d. The first charge is larger in magnitude than the second chymykur : jv(s e47(xo;arge.

  Sphere A carries a net charge *)2hmql-iv jm and sphere B is neutral. They are placed near each other on an insuvh )l2qj*m- imlated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with hdl:pos5vw 6wt(h )m4yz ;(btls02 uaekjr9. a certain force. If the charges on both obml2v trzuw wt6s (9;:5a4l0h jhy.(sped bk)ojects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractivzk c4nzx e0/4le forces of F on each other. If the charges are separated by a distance of d/3, what ar0cez n4 z4kx/le the new mutual forces?

  Two charged objects attract each other with a fm7t vy-rtxpp+l/m n.3orce F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the sep3vyp .+7tnlx rpm-m/ taration 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 m. c::n-ha1d6ezbh6z m a What happens to the magnitude of the force on the proton if a second electron is placed next to the first electro1:hmh6e6c - n zz:dbaan?

  An electron and a proton arejgu u 53jjb4pn 8y68rk separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is ppb4u ujn yjrg3kj8865laced next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happes7 9biiu3cev/ ns to the size of the force on the proton if the electron is moved 0.50 m cl /i3b9esi7uvcoser to the proton?

  A point charge of +Q is placed. qi*vgb9 qm0t at the center of a square. When a second point charge of -Q is placed at one of the squt.0b m9 vg*qqiare'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 equilateral triangle.okn11nm 1:,cdgywpf/j - k1g d 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 mag1df g ngkc1w/ ndoy1k:, -j1mpnitude 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 followin.q-aigf(3sk3e 4blat g is not a vector?

  At twice the distance from a point chanb59 +9vgel,zzqha3w rge, the strength of the electric field

  Is it possible to have a zero electric field value betwee;c4,yvdql xxm/r( v8v n a negative and positive(v ;dvqx ,8r 4ylcx/vm charge along the line joining the two charges?

  Is it possible to have a zero electric field value t prrgfk. +6/rpj6 p5gbetween two positive charges along the line joininpkg6 tp+/r.fr5rp6g jg the two charges?

  Electric field lines ne/+jnw/d.xp p zar psitive point charges

  The electric field showz-dbc/;8 wdt dn

  Can electric field lines intersect ih1a:7pv/dus 8gbo y8)8mfpiy; y k q8xn free space?

  A solid block of metal in electrostatic equilibrium is placed3v exuqpsj066 in a uniform electric field. Give a statement concerning the electric field in the blojv q30u6p6xse ck's interior.

  If a solid metal sphere and a hollow metal sphere oftve1v lk:t5 :pagzn3 fng;r /: equal diameters are each given the same charge, the electric field (E) midway between the center :lg: t5ze: v/g;31 ftrakvnpn and the surface is

  A cubic block of aluminum rests on a wooden table in a region where1(3jsq* ztxo :quz95rllh )co a uniform electric field is directed straight upward. What can be said concerning the chargl u)o( *z9jqztchq51 l:oxsr3e on the block's top surface?

  If a conductor is in electrostoacc:(j0 iv :eggb *f/atic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphereh 06yzglm qbwy / fr m9,g/ya;j6 gjv/ii28y*x that is grounded. As compared to the case without the hollow;myjyv/ g lmfg9/j/hiz08yg2 , b qrai*x6wy6 sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductor,no-l+b l +vbzs in static equilibrium.

State Gauss's law.

  The charge carried by one electron i2b2ryy+0tozw s $e = -1.6 \times 10^{-19} \; C$. 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 protons than z5o2rcvn svl: u+zm,: electrons does this piece of plastic have?52m:sov, zz+ur:lvnc

  What is the charge on 1 kg of pr* fw-j+j-:6iqcrudn n h/q,p totons?

  An atomic nucleus has a charge bvma*) 0uo3p3 jfwj9l of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated byf ppge) *4c8l g)ec7hgg.0rsm 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the m7fge egr0pcpgc) hg8.m*l s )4agnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them i i6w6ogh gw0a)s 1.0 N. What is the mag0 h6w)6ia owggnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How f3hlq(q59v qqv)re9 d )cy t+xgar apart are they?

  The force between a gyye6x7zux52e3 pv n e5(ae/x2afg, u$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, qrh elz sh-+* qx88pm*l(z3geexperience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is -mh(r qgl8psxleqh3 z8 e*z+* the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis.18 ucfqeax 9k4 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 directiona4ckx89 f u1qe of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A chargq7a ii fht9h7:e of +2.0 mC is placed at the origin, -2.0 m C to the right at x = fhita9qi7 :7 h50 cm, and +4.0 mC at the 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q47snbkkd *kzu+ s) ty-kn6 ss51 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; *bz-d +yskunk)67k 5nsss t4k Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is 4uou -d.c,dgmplaced at the center of a 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 gdm, .4cud ou-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 i)v*5df5mv* s88umwjp ,yvv dvs at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitmmvd)jvw 8v5 8, s *u5dfv*vpyude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0,64iysd2h4nq d 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net fs44iny hd62 qdorce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral 5f 7ks6jnq1p f.nc.d tbxt m:6triangle which measures 30 cm on a side. What is the magnitude of the elect.m qb:1sdxt.p6nj ff5n k67c trostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At wha c*1; ldpco181 bfarsst point, on a line between the cslos8;1c*frp 1d b1atwo 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 charge is at x = 4.0 m. Where on yfof ;g5 fsy:/*pgz 6hthe x-axis can a third charge be placed so the net force on its o/*5zh;:p gy6f yffg is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where zm4wxj :-h j0deexqtj3- q1y6can a third positive charge +q be placed so that the force on i - 41xqwm0 qtyed ez-hjx6j3:jt is zero?

  A copper penny has a mass of 3.0,hb6 zt 5iaqrua84gg+ 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 th*sb.fnox-ak 76s n l,xe force of gravity by the attraction of a fixed proton some distanfb,ns ksa nlxox6*.7- ce above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thp rl 0mn0*t-sureads which are 30 cm longtu- rpn s0*0ml. 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 i xt.2 z ,xo j2fy-m;+(qyt( qxn3supols the magnitude of the electric field at a distance of 1.0 m from the sot(.,(q3; tfuyj2 ql-p + oxxx2ynmznucleus?

  What are the magnitude and direction of the electric field at a distance yiqyx);tm6r+ o8gkp8 b ky-o5 of 1.50 m from a 50.0-nC ckrxbt856g ymo)i-q+o 8pyy;k harge?

  A 5.0-C charge is 10 m fromboo 4w 8ebjlocgnp-5e:( v 0z4 a small test charge. What is the magnitude of the electric field at the location of the telj 4 0vwp58nbg ob4 coeze-o:(st charge?

  A 5.0-C charge is 10 m from a smahg9 : h)mhtto8ll test charge. What is the direction of the electric fth)o t 9g:m8hhield?

  A 5.0-C charge is 10 m from a small test c73xg5ndi(0ndqk;cb.9y e pc fharge. What is the magnitude of the force experienced by a 1.0 nC 0dgn.x 5qc739n pfbcyek; (id charge placed at the location of the test charge?

  Two point charges each have ajl hrdk(r2q59en w3k- value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chargk(r52j 3e -rlkqn9hwdes?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chargegm(z.l tgo/3j8e ,i sx is placed at 8g/exmlij. zt,og 3(s the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed atn xyljem/h,/9)cfy(r the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line jojf re/c9,lx ny/() myhining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed ap8,fs+z ,abs (r3jt pst x = 0 and x = 0.20 m. What is the magnitus8j,fzs spa+p t (r3b,de of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50,+ss whcpwdw l veyg (rsw5a,+49jj9 ( m. The last corner is occupied by a -3.0 mC charge. Fin,+yss+ ,vp( 4whd( 5jrcsjwwge9wa l9d 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 corner7iaxnfd:e t2 *s of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.fx dn:ai2te7 *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 o hvhda2k;y8s7xp;mu 3 tj+(l jf 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this elect;hdk +jjxs;2ahm7y(l8 tp3uv ric field?

  A particle with a charge of 4.0 mC has a mass of tr,4qky/:6mm aas)ts hu( gm+$5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed in an electpsh/x9+/wch ,p s2dgc ric field of 6000 N/C pointing downward. What charge must b9 //pc h,wps dsx+2hgce placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC.bx q)9-f:umfw1y * czy The ball is placed inside a uniform ele) zb9-c:qf1yxf *mwyu ctric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries abzlt* :(sl,/ ri;d gru charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surf ullz,*brd:rsg/;it( ace?

  A metal sphere of radius 2.0 cm carries a charge6 y ttj3o cnq5;cx83tr of 3.0 mC. What is the electric field 6.0 cm from the center of the spherctty3 8x;tq65nr c o3je?