State the law of conse x55pm 0un8nzsrvation of electric charge.

  Is it possible for twov2x4 pt0 kh(xh negative charges to attract each other?

  Is it possible for a positive and a negative charge to attract e r8t(ki2g wvly;7h:/atlb,hq ach other?

  A glass rod is rubbed with a piece of silk. During the process the g4,pgcl ,,iznm4kq m cpmn z2a5y,3j,c lass rod acquires a positive charge and kp5 ,zm4m pl c2a mc,y4cq,n3n,ig,jzthe silk

  A proton carries a

  The model of the atom shows ad6vzi2 wy w4kw ,4t,cj

  A neutral atom always ha t;;e 8guo:w mngx67u+fblwr +s

  An atom has more electrons than protons. The atowx/xt-)paoodko+dh9w, k 5+ om is

  Materials in which the electrons are bound very tightly to the ns53tq1 0rrya0inig *v+ dfo -nuclei are referredq t r50d-ni g0isfna3+ oyrv*1 to as

  Materials in which the elect6r3tb wk c6q ajj0gbtz)3(yh2 rons are bound very loosely to the nuclei and can move about jq6bj t (gh)twbc2a30rk63z yfreely within the material are referred to as

  A negatively charged rod/o2w)zjhr 0fh 8wh l+x is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod wi wrhlz/x) j82ho+wh f0ll be charged

  Sphere A carries a net positive charge, and ebkfl2 1eq()bh cp79e sphere B is neutral. They are placed near each other on 2q kec1eh(lbfpb) 79ean 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?d4nq 5gz,bawyy7b e0.

  An originally neutral electroscope is briefly touched with a positively charox)sdry04v- smif6b*ldc7y( fc x0, cged glass rod. The electrosc4(d x6s,s mbil7dc )rx*vy-o0 fc0ycfope

  An originally neutral f2la -5v cow1o; jl0lfelectroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is remvao0j 25 wcl1lf;l-fooved, the electroscope

  A positive object touches a neutral electroscope, and the leavettjn(mxd w 360,, dyvls separate. Then a negative object is brought near the electroscope, (ldjdn, mw6y30v ,xttbut does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insul/9 17btem lvjrated 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 object. What i te9/1 bmvl7jrs the final charge on each ball?

  Charge is

  What are the units of the Coulomb cons ht4yxo:a6n1* knw6nete*w h3tant $k$, which appears in Coulomb's law?

  Two charged objects are hfsg(8lu15 oxseparated by a distance d. The first charge is larger in magnitude thau 5lfs8 gx(1hon the second charge.

  Sphere A carries a net charge a ktfgo8.n-f :wnd sphere B is neutral. They are placed near each other on an insulated tkt:ffg o w8.n-able. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain f ivps roq8 (qn6ftet0yh3(p--orce. If the charges on both objects are doubled with noyvtpqr-(6 - si8tf pne 30q(oh change in separation, the force between them

  Two charges are separated bev 4: 5ozz)em5,o7odhfqf 4vpr4bu .m y a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance puhfoo4mvz:qv5 . o47fe d ,)45mrbzeof d/3, what are the new mutual forces?

  Two charged objects attract each otho .5s s5gd; ti4 vl,r7vwunr3eer with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, ao3veu4; stn gr.7,sv iw5dlr5 nd 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 dis8xe wxum mxj393z-u/t tance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron iz/ uxjw 89mx-exut3m3s placed next to the first electron?

  An electron and a proton are separated by a dilqyk 0u:sut77 *7/mhj, v ;r df r33wlsdmuor;stance of 1.0 m. What happens to the magnitude of the force on the first elect 7vuds rhld tuj,;o03*77usmmry ;/r3k q l:wfron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1e 5q81,xhbwat v3ns-d.0 m. What happens to the size of the force on the proton , b1-vw sqxahe8dt5n3 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 secon ieasfe2(2g-u)0 c6pwxfy1lsd point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0ewxgfy-0 )2ai(l 2 c6fuspes 1 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. W855l a( 1 -fji;hjwp9kjnnkvlhen 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 th (j8 5l;k 5avk1pnijwfhlnj-9e 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 following is not a vector?kfze6e tf:t9oyb 1)v:

  At twice the distance from a point charge, the strength of 4(iyvy xt ahz,)mi/9,fh.mp jthe electric field

  Is it possible to have a zero electric field vae(o h2pyriy1wvk2d.p ;: vs+o0tuv*flue between a negative and positive charge along the line joining the t +ivotp *koeh.1 2yvyvsfp0 (r:;w2ud wo charges?

  Is it possible to have 4.x: jruoc1usa zero electric field value between two positive charges along 4x:urcjo 1.suthe line joining the two charges?

  Electric field lines near psitive point acw7g,ri5m ,ja m7) vecharges

  The electric field si)lfxy.gs ;0 3vrtq tvy0q0bl:i,ev:hown

  Can electric field li;k. grb24a f;d1c jwdf8jyhb2nes intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifo4 t-2o6koqj dhbvltbh0pt0 .5 rm electric field. Give a statement concerning the electric field in the block's i05jht pbt0t-qdo4 lk.oh v6b2 nterior.

  If a solid metal sphere and a hollow metal spherc1mi(kpipze/m35)y ysi m 3/pe of equal diameters are each given the same charge, the electric field (E) midway between the centesck15p y/eim )p(iz3/3y mpmi r and the surface is

  A cubic block of aluminum rests on aphd, :c 1vx./rdo je9d wooden table in a region where a uniform electric field is directed straight upward. What:vcd/ oh,1jdrpe. d9x can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equfgfwxnuv vb. s-,i7y7y (:4x pilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sd7hm.a+b2j twphere that is grounded. As compared to the case without the hollow sphere, the e.a dh+7btj 2mwlectric field at a point directly above the hollow sphere has

State three properties of conductors in static j,92m,wsy ezd equilibrium.

State Gauss's law.

  The charge carried by oy7luk;al lj8+ ne 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. Hlm h344a sid,tt5rtv.ow many more protons than electrons d3ht s4a4tm ,dl5.ritv oes this piece of plastic have?

  What is the charge on 1bat9j f nbuv*;i2hx8 lyle00eek +j.2 kg of protons?

  An atomic nucleus has a charge oy u+xd) lscbph5ux;5iy :ku*)f $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated9 ,s/epkjt/v9 6i3 (nxqugtdzi; smj: by 1.5 cm, have charge values of 2.0 and -4.0 mC, re; vkd jie (ntt6qj3s z/g/,i up9m:x9sspectively. 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 13 27fumngtui 2.0 N. What is thegmf227tu3 niu magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart aq :x xhovp6z,y 3g c*q:zil-)yre they?

  The force between a oox+n jyts4*y,oz j)*$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, eeeoxk p6hu36+ xperience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric ke+p 6hu6ex3o force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firsk aq,eikia fddhcja4 u,q61)y1s(l (5k, jb*pt 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 force which acts on the charge at the ,(a jdhck 4d5sq b)a,,li*kpaq y61u(j1efki origin?

  Three point charges are placed on tc wsf 3xdbe2wepl86f4;q6 .sbhe 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 x8 6w 2q bedswp36be4ff;.lcscm 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 themp (9c7;j oq9d.qgant 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 9g9o;am cnjqpd7.(t qmagnitude of the force on the 3.00-mC charge?

  A point charge of +Q is4jcw6h kgg0g*+x3 1k5t yekfd placed 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 pos+ 3dc41 g jhekxw5*t6kgy kfg0itive 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 corner?

  Q1 = 6.0 nC is at (0bl 58hly;k cwk4rn0a6.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the mahbk wk 45l;8 60acnylrgnitude 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 = 5.0 n9t47n j p1xn;(g1d -fptojhrjC is at (0, 0). Whag14jp jhxnoj;7p- f(9r1ntt dt 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 ofshf - uh:ao3-*l,-nnrmwpu.k an equilateral triangle which measures 30 cm on a side. What is the magnitude of nf-pas-rul whmu,*-. ho:k3 n the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which a 9;anexi3be ;wertyg:l:m5 0lre separated by 3.0 m. At what point, 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 zerg;blnw ee:3y xti9r5: mae0; lo?

  A +3.0-C charge is at the origin and a +9.0-C charge is alo;6ws/e.wmf qe - eh5t x = 4.0 m. Where on the x-axis can a third cqhs-lfeme/.we w5o6 ;harge be placed so the net force on it is zero?

  Charge +2q is placed at the oe3aat)25z*bwodp vrd i8 2)d origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force o2aibz3* dpe)dw )5vdoo8t2arn it is zero?

  A copper penny has a mass of 3.0 g. A tcm4nl0yh i qq28l-urrda 8k.zq2l0jqo;mv4 8 otal 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 forcei+ p) xcmu.i3hlse3-i of gravity by the attraction of a fixed proton some distance above it. How far p3xhi l .)e+- msiuci3above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncondt pq g*5zi kcl:5y;t/uucting threads which pik gy;t:/ *5z5cqtl uare 30 cm long. 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 cha jb,efar jr4de*drz* 8 r04-ywrge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the8a4j jyb*, rd- erefd 4*0zrrw nucleus?

  What are the magnitude and direction of the electric field at a distances77 tpnapj.g*8z(3w)ecycxi of 1.50 m from a 50.0-nC )gw i3 pcjys (cz.8n7 *paext7charge?

  A 5.0-C charge is 10 m from a small test charge. What is the e/pjyx+ff . 3mmagnitude of the electric field at the location of the tesem y3f+/jxpf.t charge?

  A 5.0-C charge is 10 m from a small test chargo.baypf- *23qra oxy8e. What is the direction of the electric fie-oaaryy.f o bq*x32p8 ld?

  A 5.0-C charge is 10 m from a srv9pioydtsd is )1+,ue-:r p :mall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of th+1i:i ssrd: v)upret-oyd 9p, e test charge?

  Two point charges ea)r(qb z24fcvfck 8 xro2*/gkuu3hxo7ch have a value of 3.0 C and are separated by a distance of 4.krbc8vfo)2xxq4 u2oz u3h/(gk7*c fr 0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cmqlxpqf lh1- ty*mc 0/)a5-sfz mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm marpyqlz *-)mf 50xfal/1 qh-sc tk?

  A 5.0-mC charge is placed e:vzhe4,yjmtu x n0t *5+esn: at 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 joining thynte ,e:jvhts4zn+ m: 5ex0u*e two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at 2b ckp b:b9.hix = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betwee bhpb 9kibc.2:n them?

  Three 3.0 mC charges are at the three coroz-dvs s uf.1q.n c)u;ners of a square of side 0.50 m. The last corner is occupied by a -3.0 s1qzov.u;c ufd. s)n -mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at tnn: mqjw 3pk/.he corners of the square as 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 . 3w/qnjm:p knat the square's center?

  A force of 10 N acts on a ch xfv 4n w)td71qgz2+vaarge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this elec 7tvxn2w d1a4g )qz+fvtric field?

  A particle with a charge of 4.0 mC has a qd t77gcmkxc ./.t+ qew,wz 3wmass 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 600zgbw 1tjm, ,zxa i4):qg3uyencoj *(r wl/- o60 N/C pointing e )mw1gcrob /yu x: 3lg,(-*jqztano6zjwi,4 downward. 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 nyj lxak7, 0us2C. The ball is placed inside a uniform electric field, and is suspen uj,7sk2l0xyaded against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the ma*9;a*gzloq gd gnitude of the;a9ld*ozgq g* electric field 5.0 cm from the sphere's surface?

  A metal sphere of radia,z r(fsk*j7wus 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm f, sfjkza7(wr* rom the center of the sphere?