State the law of conservation of electric charg*fqpa6*cui0 lnl d6 3re.

  Is it possible for two negative charges toutbw-/i/8a tk attract each other?

  Is it possible for a positive and a negative charge to attract -p(tprv tjwxfw7o(:0 each other?

  A glass rod is rubbed with a piece of silk. During the n gmj1 y chf zzw3xq9k0f,54pa (vn:z)process the glass rod acquires a positive charge andan :c0,wg 53n9zz 1(fvhqkxf z)pyj4m the silk

  A proton carries a

  The model of the atom shows c4mlz gg -3-p)ctz e/qfuiv53 a

  A neutral atom always;flt;8kvrc 3m*zw zf/ has

  An atom has more electron4wi/b(sybb7z zv4d r 2s than protons. The atom is

  Materials in which the electrons are 8gm/vzf ) ..zjf.bsia*o n1wf bound very tightly to the nuclei are referred t.mjw.zfs*.ob/ng1f)zv fi a 8 o as

  Materials in which the electrons are bound very loosely to ti.s miyjx 6: regy8c75he nuclei and can move about freely within the mates57ej yig6:8rxi y mc.rial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. l15l( r8da c4vw. ;gnoe3wujr The end of the metal bar farthestrnv o e34 wu51cldlarjw.(g8 ; from the charged rod will be charged

  Sphere A carries a net poyr/0iwn2u6t z sitive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire thatuti yw0/ 62nzr is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivel 9ws25nj, e7d,hrqkgfy?

  An originally neutral71ibd hwkp0t0 :lsa95duwk l, electroscope is briefly touched with a positively charged glass rod. The electrosbptliwd0w5d0:71lk a9 h,s k ucope

  An originally neutral e v0a;m:ex;p qw)l6wz crei :k0lectroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the;wm ev :q0pe 6;lx)wiza0r kc: electroscope

  A positive object touches a neutral electroscope, and the leaves sep7-4k; a(cufquata / kvw 1ck:oarate. Then a negative object is brought near the electroscope, but does not touch it. What happens to :k4akk -v fq wct1u(a7oacu; /the leaves?

  A large negatively charged object is placed on an insulati;-ng9q xs3t .bl6ag /:hxsjwed 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 fir.;sas 36 n:xjt g/ hlxwb-9qigst 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 each ball?

  Charge is

  What are the units o) -mn*ub;n dgsf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are se+upz.t*9aji0 nfr(glwmpr 4) parated by a distance d. The first charge is larger in magnitudi. ju(pfnr9)ztg4aw rlmp0 *+e than the second charge.

  Sphere A carries a net charge and sphere B is v,a p dn1am:l6neutral. They are placed near each other on an insulated table. Which statement best describes the elecpvnd ,aa6l:1m trostatic force between them?

  Two charged objects attract each othvsc8/uwu6ml ) er with a certain force. If the charges on both objects are doubled with no change in separatswmuvl6)/8 ucion, the force between them

  Two charges are separated by a distance d and exert jv fqp7j:vf gs)e h37+mutual attractive forces of F on each other. Ifsq:)h e7ffg 7jpv3v+ j the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects at27ac5ji784 qdioiw ;wt;e jjttract each other with a force F. What happens to the forcwjjei;4qwac27 7i i5dt;t8 jo e 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 force is now equal to

  An electron and a protn5jq3:*z oy 1xdpgml0x2-lavon are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second 1l o:dz-nx35lpja 0*yvq m2xg electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0l thg) 6eej;aoei0 )n+ m. What happens to the magnitude of the foroh60je; g+te)la)ei nce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens o+wzbu j1; sb3k- m :ded(ifi/to the size of the force on the proton if the electron is moved 0.50 ke( di;o/mij3:b+ sb-uw f 1dzm closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second point gv z 0wq2/krqgvje;q+9+ gc9e charge of -Q is placed at one of the square's corners, it is eq/+; 9gjzqeg9g0+rkv v2qc wobserved 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 f)/wge (y9us ug6 m3pzthe 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 w ()3ggzuesy mu6pf 9/a third charge of +Q placed at one of the other vertices?

  Which of the following is not a )xeb8wc :oki5 a.k2gx vector?

  At twice the distance from a point chargm. mpfvd6l 2.we, the strength of the electric field

  Is it possible to have a zero electric field;c7krp2 ,c tue*r1bmy -n6pzx value between a negative and positive charge along the linekmc2*trpyz 76 ne u;pb rc-x1, joining the two charges?

  Is it possible to have a zero electric field value be ,v3zi r, ksl zsza6tgx3br39-tween two positive charges along the line joining the t ir6- stv,93, 33sgb zzrlzakxwo charges?

  Electric field lines near psitive point charges(90 yy5fvsku t

  The electric field shown)zznoqu,c+/wfms4 e1

  Can electric field lines intersect in free spacxe *wc4w 2h9sbe?

  A solid block of metal in electrostatic equilibrium is placed azl53uoyx,+se p 2*2 bvi:oerin a uniform electric field. Give a statement concerning thsobuo2 p5xlz3i yee:,+*r2v ae electric field in the block's interior.

  If a solid metal sphere and a hol 5asqzfsq4. -wlow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between th.zs q5qsa 4-wfe center and the surface is

  A cubic block of aluminum rests onu2mhuw9;ei6 n (/jat1x:vkwk a wooden table in a region where a uniform electric field is directed straight upward. What can be2(k9vxw u ak6 w1/tejm:h;ui n said concerning the charge on the block's top surface?

  If a conductor is in electrostatic bh(fy/ov,y/u ,g n(f pequilibrium near an electric charge

  A positive point charge is jtwpz9ep j9xh3/r w)ltz.5 *yq/w 8fhenclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at ap 9 e385jz9/pfj).w xh/*qlt rhtwzyw point directly above the hollow sphere has

State three properties of conducn-,xtpi5g 2k8w2uj f htors in static equilibrium.

State Gauss's law.

  The charge carried by one elec9w4u)t o(rdca tron 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 j+0b i usxcqxqi)a7p*e )n (q7rra36s+2.00 mC. How many more protons than electrons does this piece of plastic h7ri qu6es7 bqjx sci3r+()aq anp0 )x*ave?

  What is the charge on 1 kg of protonsd)uy .w3g )voj?

  An atomic nucleus has 8hma 3g3cuhe8 a charge 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, have charge values of l bt*/zm.j2 ia2.0 and -4.0 mC, respectively. What is the magnitude of the elecz 2ibt /a.l*jmtric force between them?

  A 1.0-C charge is 15 m from a second charge, and the forcejclog. *7hn dqf( ayx.o7qj; * s.y.nn between them is 1.0 N. What is the magnitude of the sec* ndao.7yn.x.;fg *h .jlqqsoc7n(yjond charge?

  Two 1.0-C charges have a force between6q.17-q5y yq4ke7 hqoci ajby them of 1.0 N. How far apart are they?

  The force between a 5e x0jkavn,lytw 9:t2$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiuzkci:) tyfis *e0j.cn-97s;aada, eally 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, w- ke tz.*ia9d0sya)s n7i:aejf ;cc u,hat is the electric force between them?

  Three identical point charges-8kzeattz3w2/8c f kz of 2.0 mC are placed on the 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 magnitude and direction of the electrostatic force which acts on the charge at the origint/z z t-8kzfwkc 28e3a?

  Three point charges are placed on the x-axis. A charge of +2.0 mC isr59,xldg ,inhna6lyysg v3w6 un3 5i * placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 v*n, dh6 g,53y3 rw6xniian9suygll 5mC 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 x = 1e+1grk*qtg:laykur s6rr** cj ,g6p1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. Wh erlu6,g*s tk*j rg*q+k:6 p1raycr 1gat is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is place)hopu,ohkm.js02ue5zol8 h; d 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 if a th ,u.2 lz0j;epomh)ho5o8h uskird 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, 0.10zt e7t(sx/m w8 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the t7x/8mw(tesz 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is r u: o5v+uwkyjf b+22nat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction bkv2j +wn+fu2ur:5 yo of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verm awxrad( mq;w6fx ,7/u+4ekzp5e i0 rtices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which actswu, w7ed arx+m k0i6arf(4 xmqe5;z p/ on any one of the charges?

  Consider point charges of +Q and +4Q, which 3jqnrv wzs0 d9w.9p+kare 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 pz0+ j3n.rvksw99qw d such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and am5jfj;ttf:/ak mu; 7u +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third cht;j7 jfuum:5;/ ta mkfarge be placed so the net force on it is zero?

  Charge +2q is placed at th3qd *7brjp w9n;kvzi8e origin and charge -q is placed at x = 2a. Where can a third posib q7;93izkvrwjn8* d ptive charge +q be placed so that the force on it is zero?

  A copper penny has a mass yh5fgk-ae8lw rs0sb-6 w 42e yof 3.0 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 gravi/quah3e)g0 y,prytn9ty by the attraction of a fixed proton some dp a90) h3reg yq/,uytnistance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting bj9yrxo4; gp6 p k.n-cthreads which ak ng4.bx 9pco-ry;j6pre 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 charge of +40e. What isyk6n +m 3osgep7wr9j wum;aj9e ( wo;2 the magnitude of the electric field at a distance of 1.0 m from the nucleu67jo 9m39 gwjo (2wnkms;a ype rwe+u;s?

  What are the magnitudjq1zse7 g1za76 m0vwa e and direction of the electric field at a distance of 1.50 m from a 50.0-nC chargj1gw0eq 6a1zv zs7a7me?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudeeo,ph.bq6gx 3 of the electric 6 e xoqbgp.h,3field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is t fb/j1+kxw7ui*(dq wche direction of the electric fied fwqxki+7/j u1w*b(cld?

  A 5.0-C charge is 10 m from a pvmc 9zk( e(ml9j/x3d small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test c/(9x klvepm dz3m(j9charge?

  Two point charges each have a value of 3.0 C*j4-fl g acqh7) vybu4 and are separated by a distance of 4.0 m. What is the electric field at a point midway betweeng) l7fcbj4y4q -a*hu v the two charges?

  A 5.0-mC charge is placed atm5auh *;,biw m the 0 cm mark of a meter stick and a -4.0 mC charge is placeiuwmb5ha* ;,m 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 c/ 5pv-r/es zrfm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At wh/s-rv e/pr5z fat point on a line joining 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 5 wa5)we ox 8;5bv*nu;ype1 pdmi l*wz= 0.20 m. What is the magnitude of the electric field at the point m8xpeb5; ;p* 1lduwvz)w * mn5iwoeya5idway between them?

  Three 3.0 mC charges are at the three corners 8b(jz8+ fxkzbof a square of side 0.50 m. The last cornb (zfj8b8zxk +er is occupied 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 sidgd:/wr+gy xb77 b-7vifc4pfl +gp hu5e. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 x 5c/ph7- 4 ubfgwp gyri+7g+b7lvf:dmC 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 electkqym3gd8 no2 izn- 63rric fielq8do-23 yg3nzr i6nmk d. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has,yo) u(kl jws) 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 fc+ jr 7uno1ykdegw.18 ield of 6000 N/C pointing downward. What charge must be placed on the ball for i +n1we1jy8ocu r 7kd.gt to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.f-/k o,wh7 / bvsbnzx*00 nC. The ball is placed inside a uniform electric field, and is suspended against t,s7 /k -nf/z*o bwxhvbhe 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,rt* u-pnw w5hq:ds;c*whn 2 o is the magnitude of the electric field 5.0 cm from the sqnw -:5*wru*hn2 ;sdo,ph wtc phere's surface?

  A metal sphere of radius 2.0 cm carries a ch7ymwsqg1jj873d7 talw 9qhae m: 0fk6arge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphere7:qg903ds7w w fly1emqjmt k6ha7a8j?