State the law of conservation of eleuwyrhd ) rlee3.rkg+,;.e/ dwctric charge.

  Is it possible for two negative lc0b3ndk+1pp charges to attract each other?

  Is it possible for a positive and7f 4i1s. vb(7dg qiokr a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the pro oxy-nu-)d4h.ht :wimcess the glass rod acquires a positive charge and the s.-hmu y-txo4w :)nh idilk

  A proton carries a

  The model of the atom5p a+vi ksyf:apv *h 5ghdc6;2 shows a

  A neutral atom always has6er4 6frk+tcq

  An atom has more electrons than protons. Thqo+4 ;n :fnaa .0ufx:0tjdnkhe atom is

  Materials in which the electrons are bound very tightly to the nuclei are ref)7k9xxq: vy+nfu/y cherred to as fq)hx vk/ n9xc7u:+yy

  Materials in which the electrons are bound very loosely to the nu5 zlqr516mweuclei and can move about freely within the material are refe6q551muwzre l rred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. k)jdzxe/7 a5j ne2 tb* The end of the metal bar farthest from the che *ea5j)btd2/7 xnk zjarged rod will be charged

  Sphere A carries a net positive chargd .emhb09-v tie, and sphere B is neutral. They are placed near each other on an insula tvd0-h .bem9ited 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 positivelyr9rx7 hjq s; q7:ksfp*?

  An originally neutral electroscope is briefly touched lo s;r(4+wnld(db:at with a positively charged glass rod. 4a:l(tborw+ ;dsdl(nThe electroscope

  An originally neutral electroscope is grounded briefly while a par . i ukjuqjo rt881v+e;t6u0ositively charged glo1u +v0ej t.t8r 8uk;jir6aquass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Thexpb/r)n5da hcvwo)2+n a negative object is brought near the electroscope, but does not touch it. What happens to the leap2aow r +dbn h5vc)x)/ves?

  A large negatively charged object is placed on an insulated table. A nmpsg3due (v 90eutral 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 tdps v9u30g(emouch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constwxd bg02sg :-aant $k$, which appears in Coulomb's law?

  Two charged objects arej1f c 1sy/hrz*(sq kk9 separated by a distance d. The first charge is larger in magnitude than the second *j1sc/y9shkrq k f(1zcharge.

  Sphere A carries a net charpyqa.o u0vhep9q-t6ys,0q h6dpu/ :qge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force betwee/y:qephtp6v.pq6yqu q,90 h0odu-a sn them?

  Two charged objects attract each other with a certain forlej i;9p)*5opvy7 oxn/ o qjah(yjp8-ce. If the charges on both objects are doubled with no change in separation, the force bean(j/-j oqxypyo veph*;9pjo) 578 litween them

  Two charges are separated by a distance d and exert mutual attrac+6la pcp0z9/w0yp;x l(flstmtive forces of F on each other. If the charges are separated by00(;l6ptw acll9xsp/z m yp f+ a distance of d/3, what are the new mutual forces?

  Two charged objects attract each oc o1(ublgngujf0: ;;dther 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:u ( 1fu0jlggbcon;;d original value? The force is now equal to

  An electron and a proton are separated by a distance of d9 b9f94ijpcf 1.0 m. What happens to the magnitude of the force on the proton if a second electrd9 b9f9 4cifjpon is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happen0m*gw,*7 zc- fzeoojks to the magnitude of the force gzk, 7f-oez0*jw *mcoon the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of1 oklwp yhwr- vejgz-*+3 th)5cd/e7 8+k iepo 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m clo h+t/)*vkj1y -e-+z5e 3i8p od epw7rc lhgkwoser to the proton?

  A point charge of +Q is placed at the centeqslc,d s(ow)u a6zx1,;r qxyq,wyz 4/r of a square. When a second point charge of -Q ia4 xld6xr,us,1;(q /owcw ys,) zq yqzs 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 square?

  A point charge of +Q is pltcfa53ja48z t+ hp1gcaced at the 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 centc aj8g 3+aht45cpf1tzer charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following6:*xux0.jc ) tdz xfoh is not a vector?

  At twice the distance from a point charge, the strength oeqwjy 6vj ixb18iyl*hc7;3pnhb 62 4yf the electric field

  Is it possible to have a zero electric field value ,)6+ng1wxncj p4 :ngwwfaro * between a negative and positive charge along the line joining the two 1n)np,c*4 +a gjnx:6 rofwww gcharges?

  Is it possible to have a zero electric field value between two poj.88fxyi5 a2p2kfxxq y;rsb;sitive charges along the line joining the two charge2x25x;f8r jqyyas bx.p k; 8ifs?

  Electric field linesgkba(jpz5 -g(m8v; vv-ef8 o1cu kpt7 near psitive point charges

  The electric field sho)ih *r v7a)joq i9bq0ewn

  Can electric field lines intersxc:ymt ,j mxm0f;7 n(sect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a un.l2-y9 ij dheopxn 9*(rk2m2gc s xwvh;; xh-niform electric field. Give a statement coh9;xej s n yxh*xhlkm -vi;pg 2cw.2on-( 92drncerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are* j9clh71q/iusf*m pz each given the same charge, the electric field (E) midway between the center*u* 1pszfic/79mlhqj and the surface is

  A cubic block of aluminum rests on a wooden table in a regith sfmx: j*1f7+qp2 pic n4lt-on where a uniform electric field is directed straight upward.7 xstf:4j-pt+ *h1 fipqcnlm2 What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric ch/vwam6vzv t f-v*8e1y arge

  A positive point charge is enclosed in a ho,1ghsyj54eqpr /3ntbz ge:z 0llow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric fi0y/ 5 pge4zgeb3r,:zjh1qns t eld at a point directly above the hollow sphere has

State three properties of conductors in sthsg 4 l2rcw f3-ps/k83mqal6catic equilibrium.

State Gauss's law.

  The charge carried by one electron mb(obgh7o:gfn* -m x6z2sxp 8is $e = -1.6 \times 10^{-19} \; C$. 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 more protons than on7q ep/ s0trx(4dyigtjw:g1h/ py19 elech ety7 gyw1jn: r p( io/stp9g41/dqx0trons does this piece of plastic have?

  What is the charge on g8:8*ng *p +2)honf+r b /hfqia smn9x*wtwvr 1 kg of protons?

  An atomic nucleus has a charge of v8nc 6rfq dj80u.j1d r$+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, have48 ; eyi:a)npnf7 w9ug;hkyva charge values of 2.0 and -4.0 mC, respectively. What is the magnit ;y9pv) ykueh7:4ana nwfg;8iude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and t 91xyfccg//dphe force between them is 1.0 N. What is the magnitude of the c91gy fdcp/x/second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are t(n:h ci mar +/5f9bv.a cb-vjbhey?

  The force between a 76,vzs+vcu k 1w16cjuqh tjyhy1c31 l$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a kj3zq ec,d +b+1.0-N force. If they are mo +,dbj k+ceq3zved 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 the x-cf:x,, /do(7 sn.amnbo )i hhtaxis. 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 :o,ofh (t )sbxdcn.mih,/na7on the charge at the origin?

  Three point charges are placed on the x-axis. 5 ur- d*wv1nof,8oybi A charge of +2.0 mC is placed at the origin, -2.0 m C to tb o,v 5*r f1win-oy8udhe right 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 = 2v8d-cu-l qd v-eu8iy 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00882 qevu uyc--dv id-l mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q ibu9 u nf.l9 *ba:y,lcis 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 positive charge at the cente*baiul, 9u nc9fy:. lbr. 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. -by057hvd vyb30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the mav0 bv-7bh5ydygnitude 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 ato*.yi q1;ieea ifi 6m/ (0, 0.10 m); Q3 = 5.0 nC is at (0, . i1aie6 iy/iq o;fm*e0). 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 of an equivodzl c)d,. t4jx- lg*lateral triangle which measures 30 cm on a sij .4olcvt,l zg)dx*d -de. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Qq:g7c hoyvj;k 06 st);(jlnw n, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to jv) gt7k: hwnyj ;s(qlon ;60cplace 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 charge is at x = 4.0 m. Wherz)-h w s -f*k;2roys zi8qahe9e on the x-axis can a third 9azss hq;8ok i--ezh y*rfw)2charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q i ve/6*n3dsqe bs placed at x = 2a. Where can a third positive cbnsq *ee/d v36harge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total ofpzc19cy3/dm/mfe l ;k $4.0 \times 10^{12} \; electrons$ 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 gravity by yn ozx/344qfn0 8, li9varpicthe attraction of a fixed proton some distance above it. How far above tf n 4orc3xn i/ vap4yi089,lzqhe electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting. * o4 gn )l ophxmn;bcmjt;etz*l8+s+ threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forcbec s+4nxjlh. t mpg m ;*oonl;8tz)*+es 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 l; h 6i88w-wbfs fj+d3ak2eo;yghd-51 wdyawof +40e. What is the magnitude of the electric field at a distance ofdhw;1dg kf2yhj idw3 b-lw6 a- 8awosy+e;f85 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance pq rv6j2c +zt0g2lg1jof 1.50 m from a 50.0-nC cq+1 j2jc2 plzg vrt6g0harge?

  A 5.0-C charge is 10 m from c s fsw.; i uy5)v5/sz;naf02 dn1euvua small test charge. What is the magnitude of the electric field at theuuv; nwn5z)2scyva 5f.0i1 ;uds/se f location of the test charge?

  A 5.0-C charge is 10 m from9ugh:+r0qq 4 rif7rel a small test charge. What is the direction of the electric field?r: lhru479eq+ rqgfi0

  A 5.0-C charge is 10 m from a small test charge. What io8it vxedt:)020w q) odh itn2s the magnitude of the force experienced bd tv22:)o0 0)h8qixtiteon wdy a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C fu,ybxf+7 -(yl3wgroand are separated by a distance of 4.0 m. What is the electric field at a pg7-rlf,xy(w+ybf uo3 oint midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm u,h9ow,tcfx( m/e u pudf, 4p)mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at theu4 )c /ft,ouf9,p,pxewd m( uh 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of afk7 xow4d1 +x(nw, 9x w4ytu, rtam)va meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two u yodn a(v1,4w t4wxtr, 9m)7 xwxkf+acharges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = z7i+ vxq gnh* npg)3;9wczk u n9xq8)i0.20 m. What is the magnitude of the gxc9vqung pi;3hzi+)nw 7qknx98*z)electric field at the point midway between them?

  Three 3.0 mC charges oz;du9j5 j)llare at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charj9 udj5;lo )zlge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Chargrn,w12h: csugo4o1k 90h fpjges are placed at the corners of the squar p hf4c9o g1unrjko1gh0s2w ,:e 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 at the square's center?

  A force of 10 N acts on a charge of 5.0 mC whencvz7h 5a,pv+zl*(x * lsw-hcp jve7t - it is placed in a uniform electric field. What is the magnitude of this elec+ha w-vh(ez*7v7pv-zlpx*5 ctcjls,tric field?

  A particle with a charge of )st/.tl3 bn)d0 6rzh9kcp dez4.0 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 is placed in an electric field ox n d(un:)uf7ef 6000 N/C pointing downward. What charge must be placed on tfn :(n)xdueu7he ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 n x6nv. )rhnj)22d ctu 2kgmojn 5yqn(:x;6pswC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and directn)yn5np ;k)rxnu g22o xhw.( 6c 6djq2:tsjvmion of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnitu ciptmq9 cey3 v +*/a2qw:6bncde of the electric field 5.0 cm from the sphere's surfmwc3n+ :p9/2citq bc va eqy*6ace?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wu6o -ai;qm ) 3ip0fihohat is the electric field 6.0 cm from the center of the sphere?afiu qio- op3i;hm)06