State the law of conservatcuhic: 13d,/p3az coa ion of electric charge.

  Is it possible for two n9xhqf0 . 8:bksv/enwbegative charges to attract each other?

  Is it possible for a positiq04l.a. k qaqive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glbi ipp:/- fz.lass rod acquires a p bilfp.zpi/ :-ositive charge and the silk

  A proton carries a

  The model of the atom s g .il; qo c n(9k;.jhgjwxpkn+f/q6z3hows a

  A neutral atom always hgovh 5: /g-lujas

  An atom has more electrons than protons. The atod9b:y)udre)bjw ; w/rm is

  Materials in which the electrons are bounp(krjwbbhj +u- h+7 n:d very tightly to the nuclei are referred -(j un+j b:kwhrpb+h7to as

  Materials in which the electrons are bocns2,eyx,* r,g(bjsx und very loosely to the nuclei and can move about freely within the material are re,e(,sxs*c 2g ryxn ,jbferred to as

  A negatively charged rod is brought near one en9hu5ieb)qt *m. g4tob/5 sx ztcz3xl+d of an uncharged metal bar. The end of the metal bar faruxs g*xtzbqice z5t)bt/ 4+h5 o. l9m3thest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plac; lzquj 5y. l w+vc1dla0yg0/ved near each other on an insulated table. Sphere B is briefly touched wq.y ly0ld;1 5jw/ 0cuzg+lvvaith a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charg2y 4it 9yb 0jv3i fzbvrt+-h6oe an electroscope positively?

  An originally neutral electroscope n+s5ftv;mds2 apy x*2is briefly touched with a positively charged glass rod. Ts ns yt5f v2p*;+dm2xahe electroscope

  An originally neutral electroscopeq: 2uuifrizj8(+ zw5jo 0gd r6 is grounded briefly while a positively charged glass rod is held near it. After the glazogujr0z86diuw 25(+q: irj fss rod is removed, the electroscope

  A positive object touches a neutragboj 11lz t o119sd2cml electroscope, and the leaves separate. Then a negative object is brought near the electroscogcm o b129odlz1t1js 1pe, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insuu /+qo25zyaudlated 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. a5/o2d uu+z qyWhat is the final charge on each ball?

  Charge is

  What are the units of the Coulomb cogwc +ug1s( 6dwnstant $k$, which appears in Coulomb's law?

  Two charged objects ar ulhovk:je7i7 86nr7usw+df6 0jjh;me separated by a distance d. The first charge is larger in s:vu7dionjhlrm fe6+6j ;jwu7 h78k0 magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placx6/ioegl*b lz)8s l h1ed near each other on an insulated table. Which statement best describes the electrostatic force b*6os8xlb h )i1 zg/lleetween them?

  Two charged objects attract each other with/o7))daaumoqg- 0 xf xr5a0m c a certain force. If the charges on both objects are doubled with )doaamoxx/7 qf5-g) m 00cr auno change in separation, the force between them

  Two charges are separated by a ia;4 pdh jv 2 1yekwlrgz038w;distance d and exert mutual attractive forces of F on eacyzvg31k d02; wlh4aipj;wr 8eh other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other w vg 4 orguc628u2oeqy(ith 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? e8(g62v2ugquco oyr4 The force is now equal to

  An electron and a proton are separatrb8 m+a rl9k*+pyee.red by a distance of 1.0 m. What happens to the magnitude of the force on the proton ifr+9pe*b+8. ea rklm yr a second electron is placed next to the first electron?

  An electron and a proqx x9bgm9n jh:l h/4b4ton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is plac4l:ghjmxq4 bnh bx9 /9ed next to the proton?

  An electron and a proton ar.l05ewav n; xda -,amqe separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electro-.n05a, devlwq a;maxn is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a secy3 cx-7 pse2ss(a lo3-villv/ ond 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 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 soc (3-vsy2al7 lxis/ p-sv3 elquare?

  A point charge of +Q is placed at the centroid of an equilateral triangle. 4g i(f ywnipiz5ac345 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 atpwc ni4iza3fy (554 ig one of the other vertices?

  Which of the following is not a vectoyu:e. *rd;6pa(dzkj 9 8qfkbur?

  At twice the distance from a point charge, the strength of the e 8d hs8s ws0cd0mq ml:py(lt,1lectric field

  Is it possible to have a zero elipl w.0qto n;h sci54,ectric field value between a negative and positive charge along the line joiniws.h l0o iitc,5nqp 4;ng the two charges?

  Is it possible to havet9:mydb1dn, - lfpvm.vfus 53 a zero electric field value between two positive charges along the line .ny1 b ,uf:l-ts5mpfdvd3v9mjoining the two charges?

  Electric field lines near psitive point suj/2ul2yu:wwi9i)lyi +*mw charges

  The electric field shown c4gvws,cctv43 s j2.wi wcj* (

  Can electric field lines intersect in free mm7y. w5(mxttspace?

  A solid block of metal in electrostatic equilibrium is plifel c1 i l8*9zm0vtv5aced in a uniform electric field. Givzlv i9t0lcfeiv *8m51e a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of mta-,g4 pfijv1wl8y 9equal diameters are each given the same charge, the electric field (E) midway between y 8g,i4-afjptwvm9l 1 the center and the surface is

  A cubic block of aluminum rests on a wooden table in njab6ujo1k3)pez 4 x z9ca,y4 a region where a uniform electric field is kbxnp4 e, z)c4yoz93ja u a1j6directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic eqr7rslt +f 0*gluilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sph*c (bq8-zsa ieere that is grounded. As compared to the case without t8zsqe( ib-ac *he hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in statii(r of p3 jp-g.bk35edc equilibrium.

State Gauss's law.

  The charge carried by orq7q. bv2uv8/8mbs ddne 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 +2.00p:m:98 cffcze*l zt5od8 dq4v*uya7y z q0 kn6 mC. How many more protons than electrons does this piece of plastic kzq6fpyddcet*q 58*9of 47cn vl :m:z0zyau8have?

  What is the charge on 1 kg of protdc:qz30n 6xw; zhfbb -p vf(7kons?

  An atomic nucleus has a charge 80uq yl zwk3l2of $+40e$. 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 v6og7lmpfy *dqw*a0zf .dcy )7alues of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betw*g7 ldco)0wpzqfyd. y 7am6 f*een them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 )3b t3xnn gl,4rl jg0pN. What is the magnitude of nnr),g txl0g3j4l 3b pthe second charge?

  Two 1.0-C charges have6 itjx,uk j+1h a force between them of 1.0 N. How far apart are they?

  The force between a ggqb g;2bzn y91alr )ymek)u)3 r7pp- $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, itr*yh/, dwqg+b. ,mla nitially 2.0 cm apart, experience a 1.0-N force. If they are moved ta .q/t ,lgm+drbh *wy,o a new separation of 8.0 cm, what is the electric force between them?

  Three identical point chargesmud)ds 2v 1op e6;:(pku trd2r 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 a262me dr(rdp pu: v1su o;d)tkt 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 placed on the x-axis. A chark ;db9 m,0 ilhqe-6plbc46zn zge 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 4q; i,ezclpdbz6l-69hbn0kmforce which acts on the charge at the origin?

  Three point charges are located at the following position(jukr gbjx/1msec g,m38-rpbvx kdlq2 ( , t:.s: 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 on the 3.00-mC chsdk( jmxqgkbp(gur 3j8-.m1: exr ,cb/2vl,targe?

  A point charge of +Q is placed at the c; 4lql pxvm41nr7g*ci enter 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 i*xl41c4mpv;rng 7lq 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 (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.1yz8ev j;we3dw jjn:.r90h)j o0 m); Q3 = 5.0 nC is at (03hnojzy08: )wrj ;wjjvdee9 ., 0). What 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 (0, 0.10 m); Q3 = 5.0 nC is 8 ys/zazn5 g gxzu a+76(+yz rnsj):kzat (0, 0). What is the direction of g)+zk65a:z/ynn7s 8yz rzsgj u(+zx athe net force on the 5.0 nC charge?

  Three identical charges of 3.0 m j .4r; 6eqs8vei vm:0yzt3invC are placed at the vertices of an equilateral triangle whictvvv 6ej i ; .qmn4s830z:iyreh measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q a aadh1 l84)7 +njezhbmnd +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it bezma l4e7njd+h)8h b1a possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C)1 qsyng,ygv k8. tu*g charge is at x = 4.0 m. Where on the x-axis can a third charge be p* tgyq ggu18nks,.y)v laced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at 7lbs:1al0y p - /eqimh9l oi3xx = 2a. Where can a third positive charge +q be placed so that t/lobq x yhl:m1e0-7ps i il9a3he force on it is zero?

  A copper penny has a5t yb23hi9du,yy9u2ie)b qpt mass of 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 ag n/ttct0w*g4 o4u2le aainst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is g*0w4o u2tl/t a tcen4the proton?

  Two 0.20-g metal spheres are hgke68 -sx5j8tp4nkcy ung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the ak ctksje8y84nx5 -6p gngle 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 of the elem ct7vq 0,l/bwkjz/m0 ctric field at a distance of 1.0 m frlj q vc/zmmbw/7t0 0k,om the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.hxyh12hto 4i6d :pos350 m from a 50.0-nC charh 2o34:ohtys 6d xiph1ge?

  A 5.0-C charge is 10 m from a small i hurt)*;k n, 5 1zqqxy0x5rlbtest charge. What is the magnitude of the electric field at the location of the test chazqr5yui;xh, rkn0x1l)*5qbt rge?

  A 5.0-C charge is 10 m from a small test dz7z /4/ /qadncfrl7g charge. What is the direction of the electrca 7gnd/4 r dzf/l7qz/ic field?

  A 5.0-C charge is 10 m from a sma-teanqy1cn2phs 9alxh//ll o9(s t77ll test charge. What is the magnitude of the force experienced by a 1.0 nC charge placenl99e oatn/h /(t7layq-hxclssp 721 d at the location of the test charge?

  Two point charges each have a value of 3.0 C and are sepa 0*eziz gwx,d(rated by a distance of 4.0 m. What is the electric field at a poin, xeigzz dw*(0t midway between the two charges?

  A 5.0-mC charge is placed at ,z dxrpc2e f c)7v( 7s/sz:hmethe 0 cm mark of a meter stick and a -4.0 mC charge is pe2c( /vd f:rh,sescpzx) 7zm7laced 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 cm mark of a meter stick and a -4c.o: fr q klncl4sw12l5u63u m:rff3 nl91w jh.0 mC charge is placed at the 50 cm mark. At what point on a : c.w4n9cl1s6lrful5 qnr31lo2f 3hjwm: fku 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 xg .wpv ye5sv5wz3y2s 9 = 0.20 m. What is the magnitude of the electric field at the point midzwwey9sp3 s2 5gvy5.v way between them?

  Three 3.0 mC charges g6r:6(nvntto up8eg+xm6r2 c are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center on2p(o6tvmrx6gr n+:6 e ugtc8f the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners n565iz+ b- l6ygiyn,cbjo :ksdhrxar: 4jw9 9of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); -3.0 gsd z:y:a,jhxlcr5b w+ 6j5-99ony4ibrk6n imC 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 ofaq 1.l7wc4i vfr le08s 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electricrv.qw e8 facll1i70 s4 field?

  A particle with a charge of 4.0 mC has an sku3p vmh9)8alb ms,en6*5r 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 eips97lzauq 5( jq6y5electric field of 6000 N/C pointing downward. What charge must be plqi5ql79szp j( a65uy eaced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nb)p7v p62c jz1v rd, yfu.dkdn-5x+saC. The ball is placed inside a uniform electric field, and is suspend -). yrjd6av7p15uxpnb vkf2d+zd ,sced 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 isud43pn:i.hq f -obmm7f n+a;2hrf -ad the magnitude ohfmn2 m-bu :fa4;7-df3qoan ridp .+h f the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a ef k.f u6/v9l yu8ige5charge of 3.0 mC. What is the electric fielkfuuv l g5/fe9eyi. 68d 6.0 cm from the center of the sphere?