State the law of conu oob9.ma qb)l 7is/c0servation of electric charge.

  Is it possible for tw,7xv,5ncevwr 3g9bna v p-b+ho negative charges to attract each other?

  Is it possible for a positive3ch.un akt6 b. and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the p0w,7k3xt*jvi w *prn crocess the glass rod acquires a positn i*p*3w7jx v twr0,kcive charge and the silk

  A proton carries a

  The model of the atomrt-u6lr*y.:r 2-ve9n ay itam shows a

  A neutral atom alwaysx vzn4f;.vh1r5kh 9ew has

  An atom has more electrons tha+lidd o3(onj6 n protons. The atom is

  Materials in which the elec3(f3g vf pt*n0ecu2 as k(jfu(trons are bound very tightly to the nuclei are referred to asg3pk 0u2uf3vt* c s effn(a((j

  Materials in which the electrons are bound very loosely to the nuclei andvut 9u0xp42 o3h hl6xc can move about freely within the clop6vu02x hh 9t4u3 xmaterial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. wiueo 3vq o9j2 k6,d8llc2hk. The end of the metal bar farthest from the cu.eo3lo9 d j82,lwq kv 62khicharged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. anysw:: 6 r+lnThey are placed near each other on an insulated table. Sphere B is briefnnsw: +6y:larly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope oao a8tt /1dyu y6;yj/positively?

  An originally neutral electroscope is briefly touched with a positively chau j6*8w(8n q qhkjr e8*+wobw9j 4tnxprged glass rod. The electroscopt8 *xb( nkhuepw j9wqj8*4no+8jq6 w re

  An originally neutral electroscope is grounded b5o st1ebk.n )sn+we/ friefly while a positively charged glass rod is hebn e.ofs5+e/t)nws 1 kld near it. After the glass rod is removed, the electroscope

  A positive object toubh2 v);j)b/d/t /xa9 ae6 vdga1hbhgjches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but ) 6av bvhgd g;db9 ta12x )/jh/aehj/bdoes not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutrawc:6)( g)tgdblm83it2 (gh q4fb me vol 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, tw3 :h qd) t mof84 l2g)gmiecv(gb6(bbut 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 of the u 5q i8a*gv-dqCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a deo+:u:eq e) u2 kwzi2qistance d. The first charge is larger in magnitude than the second cha: qk: ew e)2z2+oieuuqrge.

  Sphere A carries a nzm,1l:lgv q7 iet charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force betwqll1 7v z,g:imeen them?

  Two charged objects attract each other with a certain force. If the charges -vxof4 ym/eo6o kklz2;gbr 3b lp6.o,on both objects are doubled with nozgyo2.foobx- r; v3l/e6l,p kb4 mk6o change in separation, the force between them

  Two charges are separated u7y ana*b3d(zs. m3snby a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of 3z d7nnm3b (ys*aasu.d/3, what are the new mutual forces?

  Two charged objects attract each othexf6j 2m ,dp3whr with a force F. What happens to the force bexh3,mp6d jf2wtween 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 protocdh /cnfub2 dl hc9/9i* j2:pln are separated by a distance of 1.0 m. What happens to the magl/2c/cn9cl9u*2h fhbdij:dpnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hapi*j4rq g:ukp/; zjwzon./a3epens to the magnitude of the force on the first electron if a second electron is placed nex g3: /pajjrozk/wuei n;.q4z* t to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happers i v,5.ot5wnns to the size vw5rt5i. ,sn oof the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Qzsqb)wz 3co,y.rc .6k is 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 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 electrost )kycrcbzq6 w z.o,3s.atic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at tcai75wuwv7 v1fw1a9la0 ; cihhe 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 aflviuaa1wv cw5w90 1i7a7 ch;cts on it. What is the 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*0cl 5d:dw)pme 7a 86cw h;thyo f)zxs?

  At twice the distance from a point charge, the strength of the electric r1 l7ta7cg1rt* ;xudtfield

  Is it possible to have a zero electric field value betweeno)v ar/.mqt*wfj(h b 0 a negative and positive charge along the line joining the two charge(mt0oh. wv jar qb*/)fs?

  Is it possible to have a zero electric field value between two positi*ri .c iqddnr0e)p-.+wm0tjs ve charges along the line joining qr*rpni 0c jsdm-t id+ )..we0the two charges?

  Electric field lines near psitive point chw kx9p+ abb(n6arges

  The electric field s8arcmi;: tad( 4xkq6 shown

  Can electric field linevl -7:bjsk 8gvs intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed iaz dy,bdh)b34 n a uniform electric field. Give a statement concerning t abdd34y)z, bhhe electric field in the block's interior.

  If a solid metal sphere and a hollow metal k nwt o 8cm mzm(j2(fzl/,/mq6sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and(cmjln8 m(t z/ ,2mwfk/ oz6qm the surface is

  A cubic block of aluminumx +iv*j yns lr/gw2:/0+zh orn rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on tr*von/irjn0 l+xg:z+y w/h2she block's top surface?

  If a conductor is in electrostatic eq9vo2-*/bk 8 leooc w:s+nkjfz uilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grjgb n +g+7h:f)nv hv/pm)*e; fxv8kmxounded. As compared to the case without the hollow sphere, thhkmg +jf*f gxx:8;mpv+ e/ hvbn v7))ne electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriu-t yqb : dkey3i, l4nky67a7w;yx y3ifm.

State Gauss's law.

  The charge carried by one electron is ;ged4s5 :y00ghm+decl/.wakqfx; 3ncfon6i $e = -1.6 \times 10^{-19} \; C$. 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. 5snqxee:ez70qk*0xe0xtp l . How many more protons than electrons does this piece of plastic ha:lte5qk zqex* e7x epx00 n.s0ve?

  What is the charge on 1 kg of prot-s:cxb7 g7k mjons?

  An atomic nucleus hask,2k8f alw,sfi0a ; nh 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 syvsw*+*w ws;1/ xq az1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnisvss q1 *yza+xw w/;w*tude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the forcepe wl37hvb,t( between them is 1.0 N. What is tb( wl,vh3 ep7the magnitude of the second charge?

  Two 1.0-C charges have a forcejtj4sog+ao( 2;s ac fxi6k+3w between them of 1.0 N. How far apart are they?

  The force between a 8 ps ,xpwwpzqs) f5o35$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, id:-9ap ;mkcmdnitially 2.0 cm apart, experience a 1.0-N force. If they are move:ddka cp m9;-md 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 d hby7u( abq3+x-axis. The first charge is at the origin, the secon3hby(u bad7 q+d 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 origin?

  Three point charges are placed on the x-axis. d)ns(r9yr sag4o+ rr1 A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +srd)g4nryo( 1r9as+ r4.0 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 position3,ovep:1yc qks: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3vk oe :y,1c3pq.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 charge?

  A point charge of +Q is plf 9bc:x* c7ixeaced 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.c9f be*:c 7xxi 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)v4 8qu 94vlhmfas8a xdz+l1)jts1+z s; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of theus )z41a f8jt+ lld1q8+s4 x9havzmv s net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0-2r1wpqaj 0zhl.gn 7p); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the dire pl2wp -jq7a0 r1n.ghzction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the .z);l*d*zlum lkb np3vertices of an equilateral t u.*zp*zl)lbmlndk3; riangle which 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 and +4Q, whi9npk7h:/acock s. t*u ch 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 eleck:ns.9 ocp7c*a/kh uttrostatic force acting on it would be zero?

  A +3.0-C charge is at thpb: wphqut /7/e origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so th7ppb: w/hqut/e net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2 np q3dzv1w/q3a. Where can a third positive charge +q be pla/3znp w vq3dq1ced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A ob7xh r6gu. qxq 43c2itotal 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 gravity by the attraction of a m; l,p0 +kklydfixed proton some distance above it. How farl0,k;k+yld mp above the electron is the proton?

  Two 0.20-g metal sphere inhw/uwy(3nif y y-+ww:dg0;:w-gths are hung 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 td w0giy-gu3w:ny-(y iw:hf ; w/t+wnhhe 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 magnitude opuoj+ *bz7f;j geg /gd-a (g2vf the electric field at a distance of 1.0 m from tjv7gg ;b+e(2 d- ufpg gzjao*/he nucleus?

  What are the magnitude and-,yn ,ili1n2ooped s ; direction of the electric field at a distance of 1.50 m from aylpnooii ,d,-;2 1s ne 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What isp)(hq j vdp-f5d w8z2x8 v1atl the magnitude of the electric field atd(wa5)l2qp8d1v p 8htzvx- fj the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direcyq/8 zk2mo1fsv7uv 0n)dh1q f tion of the electric qk)fv d2v0/fhuqym18n7zos1field?

  A 5.0-C charge is 10 m from a small test charge. What is o1x 9kp9z*plowhb 2 u:mk,*; c6zvwaz the magnitude of the force experienced by a 1.0 nC charge placed at the location ofb 6 zlpvph,*9;*wkm1zo2w:x oaz9cuk the test charge?

  Two point charges each have a valfcda bjrl948j+p8 v av7p y0+wue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a po7y+ b 9v jpajpcdlr+0 vf8aw84int midway between the two charges?

  A 5.0-mC charge is plo*9uuo yj2) xa;(e,.yt7r9nl xhvjtu aced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cmeu;ayhux2u9.)oojt( 7 y,n rvjxl*t9 mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 c3iav)w89ia/ *pzt-. lvvq k pqm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on 8 v ap3ivvikt -p/ l)zw.aq*9qa line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC ank4n :xyt 8l- y+4ocsskd -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the elestk xsy :8-c4 knylo4+ctric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side v y0 ypqielf62b 8f(0p0.50 m. The last corner is occupied by a -3.p fyipl(v 02qeyb 608f0 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 the os5rnh mv5 jtg5feh(vr;a7,6k fq4y +corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC a g5rts5,vfhmk; 4fqyv+e5 jo(nh6r7at (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 )wxk6; oe59 kvhk3+6 tasp qjvof 5.0 mC when it is placed in a uniform electric field. What is the magvqt3a9 ex6ov k p;56k+kw h)jsnitude of this electric field?

  A particle with a charge of 4.0 mC has (2wsvbo hd .dih2xaz vr (t0-6a 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 p;rgvi+(+gpf* kirx(l g1- b+zusb)lg laced in an electric field of 6000 N/C pointing dobg(l +l;uv)g +g p+kx-irgr sbi(zf*1wnward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries-82yy .g co+5pyvdgnh/.t vgfm9v0dn 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 ydvf/gg8y0np.2.c+tvyomhdv 5 9 -ngthe electric field?

  A metal sphere of radius 10 . zi1faiepox;4 1 pkaurq85t8 cm carries a charge of +2.0 mC. What is the magnitude of the electric field k5af118up4qrit. 8xap zoe;i 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm cawr ,1+0bd7k5ie4pns9lbnhrt m9s/ hhrries a charge of 3.0 mC. What is the electric field 6.0 cm9 h9esk rbw r1bs0 h hmnt+,l7id/5pn4 from the center of the sphere?