State the law of conservation of st . +pa7vyh2)ea-m/qwz ,n cuelectric charge.

  Is it possible for two negative charges tor(xe; - j:nwyi attract each other?

  Is it possible for a positive and a negative charge to attract ea qpjig-e+y 040xp 9nze s*mi.kch other?

  A glass rod is rubbed with o:o yl*ls1/ agzpk*t/a piece of silk. During the process the glass rod acquires a positive chargao*tg/ pkzl:/1l oy *se and the silk

  A proton carries a

  The model of the atom shvb gdke.t *b k;pp;08wows a

  A neutral atom always +aqhmrpvhaw 7*;y8 q/has

  An atom has more electronskwt l2e 2c-xc) than protons. The atom is

  Materials in which the electrons are bound very tightly to the nucv-y0 swpso0:qpq z3k6lei are referred to asyqks q0z s03pwv-6po:

  Materials in which the electrons are bound very loosely to the nuc9qwkg 6+bm ts4lei and can move about freely within the mats96tk bwmqg4+ erial are referred to as

  A negatively charged rod is brought near one 0y) qyvwya o0*ziw+ 1tiyye))end of an uncharged metal bar. The end of th)0) ti +q yva yo)eyyiz10ww*ye metal bar farthest from the charged rod will be charged

  Sphere A carries a net positiptmup.64l6 cojk62 ph ve charge, and sphere B is neutral. They are placed near.66ct 6ojlpumk pp4h 2 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 electrzueq)dmz- s16u.gb k9 / v;oeioscope positively?

  An originally neutral electroscope is briefly tg .l,rf9vwu)touched with a positively charged glass r 9 ftwu.,vrlg)od. The electroscope

  An originally neutral electroscope is grounded briefly while a positively ck l/ryc8 jf8ba0g/z*n harged glass rod is held near it. After tyl/0fc b8z *8akrg/ jnhe glass rod is removed, the electroscope

  A positive object touches a neutral electroscp)-xon m1 j8a.wypm0kope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Whatk0-o1.pp8xw aj) mmyn happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral 1y)i8w xyrklubae jq)r( e6 6*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 is the final charge on eacha) q)wl ure 66yby 1rkxji*(8e ball?

  Charge is

  What are the units of the Coulomb constn 2d (jku./mcoant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first .b6 7 akh fj47x2gzzwu4 npe8ycharge is larger in magnitude than the second ch84j u g6b7zz7nw yhe2 .k4apfxarge.

  Sphere A carries a net charge ay-an:rj86km z(k monr3 1vx g.nd sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between tm 3r-m1vjy6ak gr.nn ox: k(8zhem?

  Two charged objects attract each other with a certain force. Ifaroq* wq3r9a qa4m(q +iy9n7hd)co8iqd 8q x* the charges on both objects are doubled with no change in separation, the fq9o*a4(qdaxo 7 i8r) cw3qqqmq d9hri 8ay*n+orce between them

  Two charges are separated by a distawbt;t(uw8)uvj1 hl2ance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance b2 u1t(w)hva tw jl;u8of d/3, what are the new mutual forces?

  Two charged objects czp6e-o 5z yzm3a(f:jattract each 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 value? The fo3p:ojaez( z f5cym- z6rce is now equal to

  An electron and a proton are separated by cp:wi 4pm8v6ba distance of 1.0 m. What happens to the magnitude of the force on the proton if a6v8mc bp:wp 4i second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 mi+mtbtk t/ z44. What happens to the magnitude of the force on the first electron if a second electron is placed next to the proton?4i4t kbz/+mtt

  An electron and a proton are separated by a x4*oafz+ r b0xdistance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer t* boaxfrx4z0 +o the proton?

  A point charge of +Q aa l(vgr)yc8i /cm f3(s :p89,mhv zzsis placed at the center of a square. When a second 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 3fsz:c (ha/ ivr gmysp()l8zcav98m,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 triaj v:b1 1ygcd3yngle. 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 theycy1j vbd3 :1g 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 vectop4yg4lq gyg,7dfwc 4 3r?

  At twice the distance from a 2 p s /8qj0a5errhajj.point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative an n+:xu,7vyde ed positive charge along the line e :,7u+ nvyxdejoining the two charges?

  Is it possible to have a zero electric field value between two positive charges vs;/kko2g x ,oh-l )byalong the line joining the two c okg/2y;-,sxbokh l)vharges?

  Electric field lines near psitive7w mk *yhtd xw772tak0 point charges

  The electric field sci08wr 8u .eo3 in gy1gn*5rfkndt; 5zhown

  Can electric field lines intersect in free space?s(s* e o f e,uno*x.h2bl;ug5e

  A solid block of metal in electrosew: sun *u9b/jtatic equilibrium is placed in a uniform electric field. Give a statement conceue/ n9sj:w*b urning the electric field in the block's interior.

  If a solid metal sphere andikmif*9z x7 (y8 l*ckct on:bj6t, -ev a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the cent-7 tz*9 6*,x8keiftcylk(nj:bi ocm v er and the surface is

  A cubic block of aluminum rests on a wooden table in 2xdb-)x9 x8wa (c 9pydvkg a ow*w6v4ia region where a uniform electric field is directed straight upward. What can be said concerning the c -b 2v)px9do8gkvwdwx9(aa* xyw46ciharge on the block's top surface?

  If a conductor is in electrostatic equilibrium ibfd/lu 8f3r6near an electric charge

  A positive point charge is enclosed in a hollow metallic 5hr5h 2d3e+ug(f pzn:3storb sphere that is grounded. As compared to the case withou53u pr f5+(oh :ednh g2r3bstzt the hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertievad nwc1la4sgpm1rw (,8f o, 6s of conductors in static equilibrium.

State Gauss's law.

  The charge carried by ec7fh,ia 8j 7eone 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 many me 5tj4l yx(wq4ore protons than electrons q 4(exy4tl w5jdoes this piece of plastic have?

  What is the charge on 1 kg of prox53dbdf7n m+dwsbku84b;- boy z;ar4 tons?

  An atomic nucleus has a charge of848jvt6oq2ycc wm 0o8o 1z;baict ;ea $+40e$. 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+.elm3qpy8m m charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between y8m+l3mmp. qe them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1. f5cq h;l3k*p 6dpj8jt0 N. What is the magnitudefc q8d3hjp6 pt;lkj5* of the second charge?

  Two 1.0-C charges have a force between themop iwv7kq x a9;l6u:r) of 1.0 N. How far apart are they?

  The force between a 3x4k f57ju s 0rgdjx-x$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienca) c, f7c ) pazrajivv6,6hsg;e a 1.0-N force. If they are moved to a new separatif;jgpv6zcsh,aa 6rcv),ia 7) on of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-(nw 4vzx5+ vlry-zyn9axis. 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. r9w(zx lyv 4v-znn5+y 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 chik v7d2 tus5p;arge of +2.0 mC is placed at the origin, -2.0 m C to the rs ip7v2uk5;d tight 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.e lnn cnd,m9 . 99n:s+n/hhk gsxg;nm+00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 .,e nln;:g99dn9/mhgkn +hn+ mcx nss= -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 center of a square, and y2gytc,,nq. 8epzzjb *c mo-ei8:3ai 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,j t.8zip nez,ec ayioc2 gqm* 83by-: 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, 0.10 m); Q , ..6l.ljjvu8ohucdq41wun cv//m ow3 = 5.0 nC is at (0, 0). Whatucluw u148dclv ,h/o.q .wjoj6v . n/m is 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 is at (dwwa35( g7u.e*ea;* bvoefsr 0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is . swe 5* go(b dfe*wra73a;vuethe direction of the net force on the 5.0 nC charge?

  Three identical charges of0 x;rf+zhv d/b xkjh0. 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts o0xrzkv; f0h h/+ .bxjdn any one of the charges?

  Consider point charges of +Q and +4Q, wh4-vtk ki g d-s.) 6znhtva+e4jich are 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 actind)t-ij vk4 6gh -t4.a+k esvnzg 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+g-.*nq3mc4i1 vu1ja zfmmc . eco:pz. Where on the x-axis can a third charge be placed so the net z.nc ip e14c-mgca*uj+zq3m1mfvo: .force on it is zero?

  Charge +2q is placed at the origin and chargrwg4iwdg3v 71g1m 7pimg 1q+ fe -q is placed at x = 2a. Where can w7mwqf3gp1 4i g rimvd1 gg17+a third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g.o8e/o o8 xs7)q2g,at 9 tm pq5zoy)wqz 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 gravijx19vsxz0umrxx 0 y z6;vrhqxw;*; 1 uty by the attraction of a fixed proton some distance above it. How far above the electron is the proj00v1x1uxr;xyxh ;mszzvu w;6 rq 9x* ton?

  Two 0.20-g metal spheres are hung from a commol r))socwpv n1ze:m8 4+dv b)yn point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apyw)d z 8mvo)c 1ps)+ benl:4rvart 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 magnusuxwmxjmrj8*fh034)t 5g .y8uwl, nitude of the electric field at a distance x u wmwm.h*j8)suufxj 4 8trl3 gn,y50of 1.0 m from the nucleus?

  What are the magnitude and x94e ekgig8/1r42qmx. ha qitdirection of the electric field at a distance of 1.50gqkqexe4h mrt /8g14x9a .ii 2 m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test ex3pq0p5,m m*b ipwu1charge. What is the magnitude of the electric field at the location of the test cha,p 5mpxw*ib03p meuq1rge?

  A 5.0-C charge is 10 m from a small test charge. What is the d1+1wt)vff1j- b dmhu-b)j ycdirection of the electric fi-1j- v)1)hb + m1u dybdfjtcfweld?

  A 5.0-C charge is 10 m from a ln.eag 5nu z,9small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placeden l 9na,u.5zg at the location of the test charge?

  Two point charges each have a tv8 0row,g7oqvalue of 3.0 C and are separated by a distance of 4.0 m. What is the08 qt ,vowogr7 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 stic13x1 nw1a wq-:dhsrdm k and a -4.0 mC charge is placed at the 50 cm mark s1d 3 qd1:wxh1amw-rn. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is plac k669q6gf wpg9yy8d+ w arrvl(ed 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 joini6wa9r8+9gglr 6f vdwp6 qky y(ng the two charges 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 jug/svg c/i8,d -eu1pm. What is-e,/j/1c sv gpdugiu 8 the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of actq;f lm tu;/) 5hoz3kwm ,5ei square of side 0.50 m. The last corner is occupied by aw uiqek5cz ;;)5t mm hf3to,/l -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a kx re:,n 93 hfbwoad19vhcn 5*side. Charges are placed at the corners of the square as follows: +4.0 mC at (03 e kx1d9 avhb:*nfc9,n5owr h, 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 at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform elec + vc9gfol,jrg:b, (omtric field. What is the magnitude lg:cov jb,rf+( og9m, of this electric field?

  A particle with a charge of 4.0 mC haigl8g;4hlv, q m)wvj0s 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 iswwejc*b8f 9xx*;bhbw 2 w+ 0ao placed in an electric field of 6000 N/C pointing downward. What charge must be plac wo8e9+2bc f ;bbxjwwwx* *0haed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carrie-9 usyvo 3c+0u xugjit(mm 2j1s a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric fv2u syc+ m( gx 9jtu3-i10umjoield?

  A metal sphere of radius 10 cm carrt3mfy+jjp ij) 6lw m2z7oq,l 0ies a charge of +2.0 mC. What is the magnitude of the elec o2m6wmyfzjj l70tlji)3+p, qtric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge b 7an4( ib-t aebog4t4of 3.0 mC. What is the electric field 6.0 cm from the center of -bbt(i b4a74oag en 4tthe sphere?