State the law of consqcdd )-x gacc+wvjj( -m 1y2f7ervation of electric charge.

  Is it possible for two negativ9aga15 .b hfi;:cds3 wl2s3fy loewze 3wci-5e charges to attract each other?

  Is it possible for a positive and a negativev6j/li*wa -g5 ypd4nj charge to attract each other?

  A glass rod is rubbed .z( d,i mdc9qbwith a piece of silk. During the process the glass rod acquires a positive,m(bcd diq9. z charge and the silk

  A proton carries a

  The model of the atom show2j ,uif+o vrfy6.);pis znl7(gg qu5ns a

  A neutral atom always has* gzih 53w0.ne1 ds ix4;zrlxz

  An atom has more electrons than proto 7zl k;kyebqed/)5 +syns. The atom is

  Materials in which the electrons are bound very tightly to the nuclei agn8 rs+f c4hq0rbjk; 2a5*pr are referren2s4r ;fj0+a5brg p *har8 cqkd to as

  Materials in which tpeoxlynpcj6 *,490suhe electrons are bound very loosely to the nuclei and can move about freely within the material arne6cux 4*sjo09p l, pye referred to as

  A negatively charged rod is brought near one end of an uncharged metal bk46+,+ xu0/u 1 drigny/di 9w yjgmcuwar. The end of the metal bar farthest from the charxdg+j/ rgmynk,4 0w+u1u6 ydu i/w9 icged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. i3y,(jkv hu/bu.z x 5jThey are placed neakbj 5i /3ux(uyjhvz,. r each 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 charge an electroscope positively? i-7tydea--bq j2l5k)dmm4 o n

  An originally neutral electrs;bqyz3 0gqr--w,+,n mih) n(olhgxp oscope is briefly touched with a positively charged glass rod. The electrosn,nz0-g+q 3()b lo-p;ghmq ,hryxw iscope

  An originally neutral electroscope is grounded briefly while a: i.h ,w7oyv*k kbvfxf)9i+1a pu.fua positively charged glass rod is held near it. After the glass ro.v :ihoy.9*ffpix a ,1)bwvu+ka 7kf ud is removed, the electroscope

  A positive object touches a neutral a w5v;:/yqeqmg: z0tp2k9 koq electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the lq /zkya q: e90;gk:mptvw2o5qeaves?

  A large negatively charged object is placed on an insulated table. A neutr -r5isw pt1:snal 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 ei5:w 1rnpi-sts ther ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of th4k5jis 9 33nku3autvr(i kv:ie Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance 8asc-: bjb09 bni4f6cft sb4jd. The first charge is larger in magnitud6fbbji 0s baj44sb-:9ntcc8 fe than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed uv(.u ;d:ge 0 :9iqdvzajoo 8unear each other on an insulated t .:d0uiqd8v u 9;auezo: jgov(able. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certai dpdewcc,2l9e)cbwsa0 97 3ag n force. If the charges on both objects are doubled with no change in sc97gwewa e 2bd,0 cldsp9 )a3ceparation, the force between them

  Two charges are separated by a distanrplivaf9, j.,w w1l3sce d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what arel3.lf,,r9 wjaps1w v i the new mutual forces?

  Two charged objects attract each other with a force F. What hapyl+ mm qku 8j1z:q9*mynof,/ipens to the force between them if one charge is doubled:,8ymo+k/ijf qyu nq1zl*m9m , 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 m. What hapmwu3 2:hzs0 r1cl5le xpens to the magnitude of the force on the proton if a second electronxcw01mh3s :lrl uez52 is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 6cg+ *hgbt p8/w(ynbym. What happens to the magnitude of the force on the first electron if a second electron is pla/+ *wtghc n8bbpg yy6(ced next to the proton?

  An electron and a proton are separated by a distance of 1.0 c2 yqeg 2yo6,zm. What happens to the size of the force on the proton if the electron is movc 2z 6e,yyogq2ed 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of qlhg* n62ewh8 a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatichwe86h l q*n2g 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 centre xd46ml+r-yvt n38ozoid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertic3-x8ytroe4 +z6nvmd les, 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 followinb 3;wqk5f; n.n2gf oq05h aryjg is not a vector?

  At twice the distancg l95-i* ds+i-komodke from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and pe wqvt5 oi(.u-ositive charge along the -equoi.(5 w vtline joining the two charges?

  Is it possible to have a zero electric field value beb 2( .zxv3z iv:z3pdzstween two positive charges along the linei(vzb zd:.zz32pv3sx joining the two charges?

  Electric field lines near psit3bhwnry6;p+4q ;pro eive point charges

  The electric field shu /o:n )4qmqi8s ywx*nown

  Can electric field lines intersect i mgw v m o,;;hrv:;)ghfos,fu4n free space?

  A solid block of metal in electrostatcdun u/)na1 x x5u,v2kic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in )2uvu1/d knxc 5n,a xuthe block's interior.

  If a solid metal sphere and a hollow mehnngqrvop n-ys8 *3 +:tal sphere of equal diameters are each given the same charge, the eleh yrq:g3*ns vpn 8+o-nctric field (E) midway between the center and the surface is

  A cubic block of aluminum res*: eke2ov y+i/h z4l*so8gplu eab-5gts on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concernil i4olgk/e-pgs*y8aebhe z*o52 +u v: ng the charge on the block's top surface?

  If a conductor is inoggie 1c5l )j;zo04q p)bnj6e electrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metalli(/0bn+cp gdnd )ep2 lqc sphere that is grounded. As compared to the case without the hollow sphere, the electric fiengcp( dqep n 2/)l0bd+ld at a point directly above the hollow sphere has

State three properties of conductors in )lo*f6rsfr)erlttelg; 6uu nn 2;i/ 9 static equilibrium.

State Gauss's law.

  The charge carried by one electroa 4 y;yoab h+h/b):ogtg+;xynn 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 many more protons thz 1/qoleen2sw j8(w s42xgav 7an electrons does this piece of plastic have7 sgae(4/8lq1wn2xoj vws2ez ?

  What is the charge onz+ ilcd4o* vc9ps02 pc 1 kg of protons?

  An atomic nucleus has a charge ofm950 pazhv8- r)p4hxfli3t rs $+40e$. 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 2.0 and -4.0 mCw v 2cw;mqc -*hq-y4fy:)apfl, respectively.cywfq;ma4 wyh -c2f*:v-qp )l What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and thel4ly krv .(j.u force between them is 1.0 N. What is the magnitude of the y(vl.u 4r.ljk second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart ar. vdw*uysje 7y35h *u*ggai1 kmid-9re they?

  The force between a u nu6y/ (us1qi$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initialm-)ib6)gjdqz.p2,baz our i6 ly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new sepa ioi)6bj.d a pqzurmb )z-,6g2ration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-dc c4dvo4)7q raxis. 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 direction of the electrostatic f4vc cd4)qd7or orce which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of 5zpju5.k 8skr +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 and direction of ujskz85p k5.rthe electrostatic force which acts on the charge at the origin?

  Three point charges are located ath3g a1s (zvl2je9u,f1e1trxp l:ya/ p the 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 the magnitude of the force onz,1et 21/jaly grv aps 3f1xu:(el9ph the 3.00-mC charge?

  A point charge of +Q is plaa h+1m)c bas1spc1,fhced 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 iff1b 1+,s h1 camsahcp) 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 (3oql* t;wn +cgwe8a1cp,f vi .0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What pi 1taw.v ,qw; *3cgfl+ne8cois the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC b/ h-u: mv4wi fftb8b8is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0).8bihvt/b f-:umb 8fw4 What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed atl*gs; x*mp:ql)vb 9 w:qtho, x the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude ox 9*qom,pwxg*vbq ll:s; th:) f 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. At wh n.idvz;. 9vv)(cmg*hy: jg uc*o,hrhat point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting oic,9c;mhh*ug ov (ygr vd zh*v. .):njn it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C chac/ytk.;dqg :grge is at x = 4.0 m. Where on the x-axis can a third charge be placed so thd kg: c/.gytq;e net force on it is zero?

  Charge +2q is placed at the origin and chx6xx1l kz-t0 bo b*y)carge -q is placed at x = 2a. Where can a third positive charge +q be placed s-cl b0)ot *x1kzyxb6 xo that the force on it is zero?

  A copper penny has a mass of 3.0 g. A to- f8*a/8 tjgs;;f)ez /jz3crde qscq htal 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 attractheup5b qci03 6ion of a fixed proton some distance above it. How far above the elecu b5 i6ep03qchtron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncy ne1u, 5yv(l:ez n0fponducting threads which are 30 cm long. Both are gl1ef:np y , unvzye(50iven 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 ok uiy9nvvt6)he ogs7.d 9/.d of the electric fieldn/ ihy6v.ud sotev)g99 o7dk. at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at 8e) le2cr w- 8ve8jkaoa distance of 1.50 m from a 50.0-nC -2eve 8k)8rea8jlcow charge?

  A 5.0-C charge is 10 m from a small test charge. Wh*9efnh nvl0g: klbeqos- v)4-at is the magnitude of the electric field at the locatioe4gnq*nev0:sl vlh-b9 fk )-on of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dibd,qjf 5b7;hdrection of the electrbj 7,;qd h5bfdic field?

  A 5.0-C charge is 10 m froo7atn 5ax. x8km a small test charge. What is the magnitude of the force experienced by a 8no5ak xa.7tx 1.0 nC charge placed at the location of the test charge?

  Two point charges each hae mi7zrz01a5tk p8- we +4favqve a value of 3.0 C and are separated by a distance of 4.0 mpie1wzfa t 5z74k+vrqe 0 m-a8. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC c s6dxvx4d ud9,harge is placed at the 50 cm mark. What is the electric field at the 30 cm 9x4d ,dd6vxs umark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC c )f4pzgl v/d/05ivxb22js7 4ifbltje;1twvr harge is placed at the 50 cm mark. At what point on a line joining the two btsxrvp4l2wg1zb2ii 0f 4vfj)/ jtlv7e/;d 5charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m.iajjalc7ik4h a+w 1;/57z rdk What is the magnitude of the electric field at the point 4z d+/j 71ia;5 w7rchakk ailjmidway between them?

  Three 3.0 mC charges are at the three corners of a square o 8-euyhts5 /e/qp 0sgmf side 0.50 m. The last corner is occupied by a -3.0 y /0 heetpm/-us8s5g qmC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charm;h5 ywx(exk5ges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, (he5kx5 xmw;y 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 j:lxtrh *6 le7when it is placed in a uniform electric field. What is the magnitude of this electric field?j l7he 6*lr:xt

  A particle with a charge of.annhg.)y4r sv s7c) o 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 0.120 g is placed inzy.w r3; k.nb-s (5y ;u efeadyp+zig2 an electric field of 6000 N/C pointing dow e.ib; n .dyuz;(32sw yka+g-5ypfreznward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ballvi* t21e:-k3)af-g g( mxo vuyer7dzs is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electri vrm2u:- 1(ey-tgi7 xedzga)f* 3voksc field?

  A metal sphere of radius 10 cm carrie) q d29q.0ipn8laa pqzs a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm frompan d 29 qqizq.8pa0l) the sphere's surface?

  A metal sphere of radius 2.0 cm carrieslzd )+v3tx011 lba doh a charge of 3.0 mC. What is the electric field 6.0 cm froa1b o+1dh) z 0vltxd3lm the center of the sphere?