State the law of conservat6zw:pv sskv:- zb,. qjion of electric charge.

  Is it possible for two neg3gt kzt+gwh8 f( ii7e;ative charges to attract each other?

  Is it possible for a positive and a h)1y glbcr3f/negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod acj(h2, 1lh ro)tcpqo7n quires a positive charge and,jpr (o ho7q) cht2nl1 the silk

  A proton carries a

  The model of the atom s0e:jq.gktj7ro mq 6)ihows a

  A neutral atom always ztn5zun8dpfsk;k 9v *e,:j) mhas

  An atom has more electrons than protons. Thnwn2pb a9 fonyfx(d 0(n,s) l;e atom is

  Materials in which the electr7 e.uo-rbyv2. it cyk7k)u+nbons are bound very tightly to the nuclei are referred to nv uo c..bkbyer7)ti u7-yk+2 as

  Materials in which the electrons acglt wklxe(+, v2(a iio1ff-3re bound very loosely to the nuclei and can move about freely within the material are referrlti+,3xg-flvwf aie k(2(c1 oed to as

  A negatively charged ren7 . v+ie,bleod is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be che n7l+e,.bveiarged

  Sphere A carries a nec8,yc8b vgix. dq z-e0t 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. Which statement is corred08ib.v,y8zcq e x cg-ct?

  How can a negatively charged rod charge an electroscope posit0tjbj-i t)cn2ntxl/7ively?

  An originally neutral electros:ar eooc2gzdubl7s 5 -:ssx.,cope is briefly touched with a positively charged gla rusdgb.2 ::scx,oa-s7lez5o ss rod. The electroscope

  An originally neutral3 fwgyi:vfg ug; ++*hd electroscope is grounded briefly while a positively charged glass rod is held near it. After the glas;y3g wi*g+guvd fh+:fs rod is removed, the electroscope

  A positive object touches a neutral elec4;hoekaqbo lp:his7i bnm) b-( .5kq+ troscope, and the leaves separate. Then a negative object is brought nep);iq7snqhmkh o o +bbl5e(:abik. -4ar the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A2vspp6 mu-/ yp 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 objecmvu6p2 p/s- pyt. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb goi:o s2p3ku 1constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargeyc/f) .mnhwkba5 try.you4 ;4 is larger in magnitude than the sec a5y .;fcbykr /mht.)wo4ny4u ond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nearx i-z.w8 5)i er. huk.1vcdwgi each other on an insulated table. Which eg.i-c 5 ri )8i1wvx.wkh.d zustatement best describes the electrostatic force between them?

  Two charged objects attract each other ) 1+v(p cd/gzecr-k a mjixk/4with a certain force. If the charges on both objects1 ixrek/j4cag/+dv-ckz( )p m are doubled with no change in separation, the force between them

  Two charges are separated by a distance d+ewmmd(gj9olfb(83 kg)vd, c and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual fmwelcb (( +j8f dogk3vg, dm9)orces?

  Two charged objects attract e fc kz9i70yd ojh+..v mc:yf/rach 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 valjc9:yc7.ih .0zryd fkm fov+/ue? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 :zf6kbif o3 (+adunv+m. What happens to the magnitude of the force on ivf: +3odf6 (nbz auk+the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. W+dum d6 twwa34hat happens to the magnitude of the force on the first electron if a second electron is placa3u t+dmd6w w4ed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whatpsip9g ernl7 h* sk23i)td /; vi:c7ob happens to the si p)lio 2shs/bgd;*pkn7te9 i:3v ric 7ze of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a swmx 1i g3;*(ncln *jovecond 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 placedc ni*g3jn* w x;mv1(lo 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 thei:,o -: rxnvj*a6uxz v*ezqn( centroid 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 oni n a:-nj6:xe*,(zoxv*rzquve of the other vertices?

  Which of the following is not a vec)md. 2s1faazhugbmt - is7l0pey3)*ctor?

  At twice the distance from a point charge, the strength of the elec+q90 ion w(9ey(iqstg tric field

  Is it possible to have a zero electric field value between a negat/z690rjml a wspc s7mm1z)um3 ive and positive charge along t1szr/cwl 39)uzsj mm7 mpa0 6mhe line joining the two charges?

  Is it possible to have a zero electric field value between two positive cbk ggps+/fquahs4 7j. )rae1/harges along the line joining the two chepsahq7//41. )sr+gfaujkg barges?

  Electric field lines near psitive poina l tze 1 d*5qmxza8pa+f-+mc/t charges

  The electric field shownwkl z bdt1wr2(94 /1rs8cbtyvfi: ksu 4t)+ oh

  Can electric field lines interm(am 1wos2j3,k33edqzlzt -z sect in free space?

  A solid block of metal3 q6zz 1pcy 4pom,ote) in electrostatic equilibrium is placed in a uniform electric field. Give a statement concernip opoy )3z14m,zet 6cqng the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eachhpz, jd 32+v /j/n: u3cq nnvh1q(nqzo given the same charge, the electric field (E) midwayc(jqv,+unv/3:nq o/dzh p jnz 3n21qh between the center and the surface is

  A cubic block of alum hsvnrgq5184 sqoxfws:8wdvu* d/65yinum rests on a wooden table in a region where a uniform electric field is d6w/vdh4x5*v5u dswss:f oq8qr8y1g nirected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equiny 1(8ek1e+quy .hgyslibrium near an electric charge

  A positive point charge is enclosed in a hollow metalto*i6t9u l;u0 e ubt52iher j6lic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above66b ol0iri25*teuut; utj 9 eh the hollow sphere has

State three properties of conductors in static equilibriumje ae.91 a)tlqv5aj7 p.

State Gauss's law.

  The charge carried by oneb orjska 2 bk3pe jv,f1a,46n2 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 cha 2my76jcbr;msgy2b kvz5 8a z.rge of +2.00 mC. How many more protons than electrons does this piece of yv8sz6abgy7 .kb 5rz m;m22 jcplastic have?

  What is the charge on 1 kg ofuqg8q jw3zgyb6 3jw y+t8*l+f protons?

  An atomic nucleus has a charge ob0e rc1 njk4kxw+vyejr+w-8u a25p (d f $+40e$. 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: bcfoutype* p.r(* j3 and -4.0 mC, respecc uerpj :b*oyt.*3p(f tively. 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 between them is 1.0 N/yc1ll; . hyob. What is the y1lybhlo; ./cmagnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are t4t pp)d4dx 0y iw*tm,chey?

  The force between a zirek29r oi6c qe1 -v:ezed./$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a5d dhgyy/:.xxgyp2d: 1.0-N force. If they ar gyhyxd 5/ pg:dyx.d:2e moved 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 tt. an.)s+1zqkg f vi5qhe x-axis. 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 magi v qg+tn)fz.1sk.5 aqnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on--kr(2qvw;blkv 96n9tq rj fb the x-axis. A charge of +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 the electrostatic force w(fj2 q9k bn-rqlv kw;b -69rvthich acts on the charge at the origin?

  Three point charges are located at the follostgyoe8g7o6 ;+ 8ritlwing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 =e 8tg8 +osg;t7y roli6 3.00 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 at the ce,7 z0tarp0sc hnter 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 if a third charge of -Q is placed at the lower-left cp0ct sz,0r7ah orner?

  Q1 = 6.0 nC is at (0.30 mfxj: wdoh856jl ,l,z e, 0); 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 charxje,,l6:doh l5f j8zw ge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 rgzu1 fu2;2 lunC is at (0, 0).2;uguuzr 1 l2f 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 zb- 8 a*ivmxv awl,5j0pb0l h w4y9w9bof an equilateral triangle which measures 30 cm on a side. What is the magnitude of theb-* z i89mbpywavj0 0l9,v4 w5xawblh 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 what ptj4mc8b9q u0noint, 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 b cu8jm b9qn04te zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is akz/zqb w u4h 5mj,9y7iba 0kh1t x = 4.0 m. Where on the x-axis can a third charge be placed so the9z ykbh01ikaq 4wb, mzj/75h u net force on it is zero?

  Charge +2q is placed at the origin 7de 7r/xty9khand charge -q is placed at x = 2a. Where can a third positive cha/tkxye 7d9 7hrrge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A to ;ffryb1v3hci+dv y(w- 1a:mee c7 *rbtal 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 uvi tr,h t4p3*ip against the force of gravity by the attraction of a fixed proton some distance above it. How far above the electroit4pi, r vh3*tn is the proton?

  Two 0.20-g metal spherestst(o n ;9zon2in*r0x are hung from a common point by nonconducting threads which are 30 cm long. Both i x0nsntr;*9 (2noz toare 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 is the maeeome1n(.m6 ds,wm h .q,(beagnitude of the electric field at a distance s qe(hmew.6,o(bendma, .1me of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distan3 +k+aslh)fwgb dqg1a 2r8s7 bce of 1.50 m from a 50 bwgs7 3fakhg8+)a1lsbq2r d +.0-nC charge?

  A 5.0-C charge is 10 m from a small tes oc,ja b7 rcb(qd--55jw0fzwi t charge. What is the magnitude of the electric field a0o7br-d b(ijawc-fcqw,z j55t the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is y*dxq 45igqm/dlyj.9u 0*hsathe direction of the elec uq xa.l*j4 yy h/i*mq5s0dd9gtric field?

  A 5.0-C charge is 10 m from a small test charge. gmehb-a, d* :r What is the magnitude of the force exd, -eh:mb*rag perienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separawzzh9bn pg( 32ted by a distance of 4.0 (2ng3w bhzzp9m. 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 oyhq5 wq q9x. f,iib6b(f a meter stick and a -4.0 mC charge is placed at the,6q bq9ix5( yqh fiwb. 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0b 2exsfvko,4y 7l2 mt- 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 j vo eyxsf7bl,4 2-tm2koining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC ; 6gx+na ,llr) vbb1mk7advu z.d+5phare placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point ukv+)dhdl b,. vm5r;xbg6lpn 71az+ amidway between them?

  Three 3.0 mC charges are at the thhb 8h6g6hwohru5cf*:d8u hk ,-wt+i2j(ri sjree corners of a square of side 0.50 m. The last corner is occfi8g26 wt jr6usb,hh*+(h5jrcuo8: h-hk idw upied 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. Charges89rv :jc 3fgcg are placed at the corners of the square as follows: +4.0 mC at (0, 0); 8v:grjfg cc93+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 when it is 7d:4gr hnm jz4v0ze 4in jjb 3yau.(l9placed in a uniform electric field. What is the magnitude o44 yl0 gj3vnda jj7er49bzm hni.u: z(f this electric field?

  A particle with a charg3bfwz5 7/nyvz e 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 0.120 g 0a- eg )pf2/dbq*hklz is placed in an electric field of 6000 N/C pointing downward. What charge must be placeq *be g-kp20f /zah)ldd on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 q;pe: *hyffbm fp(v c*9:o ssz(*q0cw nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the:c(f9 y:c m fefb qsshv*zwp*;p( o0*q magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the max: *oqd85bu6bsjcj, rgnitude of the electric ,jb8djo:qxrbu 6s*5c field 5.0 cm from the sphere's surface?

  A metal sphere of radius sfxctwhk((r1yp -58p2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 1tkyr -fpxsh w85cp ((cm from the center of the sphere?