State the law of conwq:5y9*zvwaq/.sr h w6qce *x servation of electric charge.

  Is it possible for two 6ip dul-ndg-+ negative charges to attract each other?

  Is it possible for a positive and a negative charge tn ( yr75kvxvgou(.o 2oo attract each other?

  A glass rod is rubbed with a piece otjxz-z.a 78zof silk. During the process the glass rod acquires a positive charge andj 7.ozxzazt-8 the silk

  A proton carries a

  The model of the atom shows m-6l+i6( xaj7rm2gi t 9oezova

  A neutral atom always pfponm/8 j)btaguvb + )peoqp5 )/2;thas

  An atom has more electrons than protons. Th2g *sud s.h(qie atom is

  Materials in which the electrons are bound very tightly to the nuclei .x:8;uw* hrpd-v luzj cm, zf,are referred rzm xfw-; * ucd:lz8h,vu .,pjto as

  Materials in which the electrons are bound very loosely to the sx-oxe +i- 1gbnuclei and can move abouxgs +-ib-ox 1et freely within the material are referred to as

  A negatively charged rod is brought near one end of an unscizn+ dqt 77,x)6)bev jj z/qcharged metal bar. The end of the metal bar farthz7j)6qxqn z je7d),i / tb+scvest from the charged rod will be charged

  Sphere A carries a net pq-qgop0ch )2crp+j 4smba w* +ositive charge, and sphere B is neutral. They are placed near eah +opcmqwa-c *ps +r02 g4b)jqch other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod char xg1x. txh5kn*t6 jz oje9if1:ge an electroscope positively?

  An originally neutral electros s(j6lty, to*i1 0ltrkcope is briefly touched with a positively charged glass rod. tt il y061 ot*r(j,klsThe electroscope

  An originally neutral ele-og; 0( drkhpnctroscope is grounded briefly while a positively charged glass p -k(0orh;d gnrod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sep5e8com7 o2( rd7k(ep3 gjpo xparate. Then a n 7 2o ee(ojg 8omr5pcdk73ppx(egative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table.kuy;4 jr2f w5l 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 lw4 k5y;2rfuj 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 thldy* mfug(pjg1qp 4+: tw 5g4we Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects :;ajz40l1 qbd,znvh7 ptzw(u are separated by a distance d. The first charge is larger in magnitude th0,zp d jnv7(bzzw1:l4at ;qhuan the second charge.

  Sphere A carries a net charge and sphere B is neut8c6pgknl); ;dp9.ci nrg; kz tral. They are placed near each other on an insulated table. Which statement best descnk9 pl; r. ;pg6k8)dc zcn;gtiribes the electrostatic force between them?

  Two charged objects atqf 8+0ywl9 7pe3dqz7rhwxg; ntract each other with a certain force. If the charges on both objects ar p93egn 0 r;yz8+qw7qfw7lhxde doubled with no change in separation, the force between them

  Two charges are separated by a distance d and 8fyt*zo 6h9vp exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what arh zy8f 6pt9vo*e the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the fo,av6qo ( sm-2nm l3zqorce between them if one charge is doubled, the other charge is tripled, qm2(v6 m,slo3-nz qa oand 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 distanc 59 rb*s-mtofp+tp0g eq:3ago e of 1.0 m. What happens to the magnitude of the force on the proton i:53g * tr9fpqeo+b-0o ptmsa gf a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens tvv;o *)co.-e0flu:n+lxl bx s o the magnitude of the force on the first e e l*o+ox.ls0xvn-;:lubvc f)lectron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distanceasnu ebaa tqn:zi2g yxv+9r70t6b+ ,i:v0l8 z of 1.0 m. What happens to the size of the force on the proton if tl+r0 qnzvsz2b+vy0a :e89itig a axu67:b ,nthe electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. aqy en+z)12hod*7zt j When a second point charge of -Q is placed at one of the squ e*n7+dh2qz j)1ozayt are'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 centdbsi* e ,q.10cdurwnp g. (ntw(o7e7iroid 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 that acts on the center charge due to a third charge of +Q placed at o dd 0.rn ,u w(ce. etbw7*7in(gqis1opne of the other vertices?

  Which of the following is not a vect l6q9oy w3hi5tor?

  At twice the distance from a point charge, the strength of the elsrffz p76sk 2- kge04wlc+2hnectric field

  Is it possible to have a zero electric field c z-.k1,v/p*nm c(pa.bba zacvalue between a negative and positive charge along tvn1bka .pc/.cb m(acp* z,az-he line joining the two charges?

  Is it possible to have a zero e2tg ck7o k6oz ;t8gc-alectric field value between two positive charges along th- gkt8; cazto 6o27gcke line joining the two charges?

  Electric field lines k38vnex7k4 p pz2lm) zdv+s-pnear psitive point charges

  The electric field sh7sanhtm e15l2own

  Can electric field lu aqox(a(m g1;:(a/codtxm1 +xm/rddines intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in s0jke--v g jth/fx t9/a uniform electric field. Give a statement concerning the electric field in the block's interi0tf / 9tev/gjh xks-j-or.

  If a solid metal sphere and a hollow metal sphere of equal diamnjj 9w:lu7k t,eters are each given the same charge, the electric field (E) midway between the center and the sujj: ,l9n7kt wurface is

  A cubic block of aluminum rests on a wooden table in aj+nez9(h yo x9 region where a uniform electric field is directed straight upward. What can be said concerning th+(9 oyzx jhe9ne charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near3 9 oiowex(+zu an electric charge

  A positive point charge is enclosed in a hollow metallic sp9el;3pqshkmsr qx9) 2here that is grounded. h)qml3sq9pk29r sx;e As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of: mta0,hby6d1 yt+ hh+4bgraf+,,bdj+ stpo z conductors in static equilibrium.

State Gauss's law.

  The charge carried by lf3ym s+.gr1cone 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 net charge of +2.00 mC. How max6pe, 8 sm1jpuny more protons than electrons does this piec8 j1spxupme6,e of plastic have?

  What is the charge on 1 kg qp+unq 58g-muof protons?

  An atomic nucleus has a charwp+:usw 9w l ;6k:yr6s:twfh b1jio- mq4fpv*ge 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, havmo4)l y7eg:t lnh2p xq/n6,v ve charge values of 2.0 and -4.0 mC, respe n )2m:lopev7gn /y,l6hvxt4qctively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a fuh5 wnb 97.rh . y6ahyek5b(esecond charge, and the force between them is 1.0 N. What ibu7n6a hf5 e.y(h5.9byerkhw s the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far a4enqx/b ycs/up /1p- fpart are they?

  The force between a t;1in/j rcv:n:ruij 3 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially up;buq3 bnooh4mt9mo;:fl, (2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric forcbph;n,utm4ulqm foo: ;o93b(e between them?

  Three identical point charges of 2.0 mw08s+rh;znd n)9o4tceh0 k hnC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the thc)onrn0se hn htz49+;w0h8dkird is 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 placed on the x-axis. A charge of +2.0 fj 0l,1j gnof8 5geen.7qgw5q mC is placed at the origin, -2.0 m C to th0ne.q wgf7n51o jj,qfgl g5e8 e 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 charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at xyvdi4dqu 0k, :,cvw 3wlrgo4; = 1.00 m; Q2 = 3.0,d3 cl4i,v;ou:w kgqdv0r4 wy0 mC at x = 0; 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 placed:rrg yxxlk+x ,i yw:(b4qud chd0,.0m 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 b:x qluyk4d:,xcy0 ( mhr0,dx g. wri+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, 0.1bl( p .6kgj9gl0 m); Q3 = 5.0 nC is at (0, 0). What is the m(6jl.pbgk lg9agnitude 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, 0.10 m); Q3 = 5.0i3xq-l( s:( wm:e dltxen:c3p nC is at (0, 0). What is the direction of the net force on th(: pll:nsedx3q( -3t:xemwci e 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equk6dt:3v es po2ilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges? petokd2v s36:

  Consider point charges of +Q and +4Q, which are0w l)p x xlqc;5:ce)bs separated by 3.0 m. At what point,qs xxb ;))epl:c wl0c5 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 aeio)0+slzvv645 uyi (b8m jlo +9.0-C charge is at x = 4.0 m. Where on the x-ax vi056zv)yllmsbiou(e 8 4o +jis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed,zgcg um.a;i8 xb3j* d at x = 2a. Where can a third positive charge +q b; *,g8.z m3jxi acgbdue placed so that the force on it is zero?

  A copper penny has a mass of 3.3qb)r u u3gf(p0 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 of4i 8s3rustpby :)/fc dvjc7s 3 a fixed prot 7 u8cstri/dp3 vs y43jb)c:fson some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by 4 tt5zfmkja52 *hgif 9nonconducting threads which are 30 cm long. Both are given5ff2tk5hij *mazgt9 4 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 is the magnitude ofm* q2+bo wct. w b nq/tjrlt;-sd3v6e7 the electric field at a distance of 1.0 m from the n2m6el o n/t7rc3db .t +wstq;-qjvb*wucleus?

  What are the magnitude and direction of the ebm8ccf mg1/ r+qmtq 4*lectric field at a distance of 1.50 m from a qt mc4br18mmf/q+ cg* 50.0-nC charge?

  A 5.0-C charge is 10 m from a s16 fw5qqy/emy mall test charge. What is the magnitude of the electric field at theq1f 6q 5/myywe location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the 6m6t us3cw.q hqz i)8oelectric fie)qo6cu.6w 8 zt mih3sqld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of :wd wdz-*yt)1upb a)fthe force experienced by a 1.0 nC chz*ad: 1b yf)wwd)pt- uarge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a:42ok wx ) +yiuffig1p *cc-ti distance of 4.0 m. What is the electric fi u2x+wg-iiopf f*c :) c4yt1kield at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stic) g o4xy8cp5xhk and a -4.0 mC charge is placex 48 coxphg5y)d at 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 mc2 y0tkvi5n9 abunx.6 ark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the twni6nv 5 9yu0.txa2 ckbo charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC o6* hbwufl41(ev8jrs are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric fie 4h6ow vu*s1r8ljb(feld at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.wsj6b 8 ,:ylinr2um16 wa(d xs50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of tl,1u6y i wxsmr8nj(b a:dw26she square.

  Consider a square which is 1.0 m on a side. Charges are p*z:-cmm uzx p/co9ro nu96i *-a6dhfzlaced at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 9c/ :-mzu6ip*zxzhndc-or *af6o9mu 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,o 57oppkv q:p 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fivk7p,:qop5o p eld?

  A particle with a charge of 4.0 mC ha/eyzd( w5 xa(qn+1d ( w*vzekd6kz 3dls 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 in an electric field of 6000 N/C;fqjbw33 s/ep6y/rd+9lwq jt pointing downward. What charge must be placed on thrjft / edp6wqqjw+9l;s/b3y 3 e ball for it to be suspended?

  A foam ball of mass 0.150 g carries a ci/+ s tk6i7obfharge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended agii+bots7 f/k6 ainst the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cd46 g:f(iz b ivj;7j0zt6yno:f3wbmsm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's ;zf7on jfbv:d6g:(iw3ij4my6t s 0b zsurface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is pz8cx) yhw btat8hci3 m9*ni0r+,dh6the electric field 6.0 cm from the center odr)ati8z* iyxm,hc9hpt8 6 +wch b30nf the sphere?