State the law of conservation of electric charge-)lue td2/726f 4f.jyix0hsqtagu cp .

  Is it possible for two negative charges to attract each otherr/bxv2d(. 93ne*qdbek 651wwejo u jd ?

  Is it possible for a positive and a negative t6uvcu9.udt 6e)zeow ;ms) 0qcharge to attract each other?

  A glass rod is rubbed with a piece of ,/o3 w7ztpn (vb ay -mdcza+j*silk. During the process the glass rod acquires o-dzm,pyct+*w j b 3vn/aaz( 7a positive charge and the silk

  A proton carries a

  The model of the ato lu ndj;8;;ytffj;8iym shows a

  A neutral atom always han)pg gu/rzfz 3r 6zd30 m1cfbejz6v;4s

  An atom has more electrons than protons. The atog yk7*dbwph-wh 9zv vxh, 2v04m is

  Materials in which the electrons are bound vebij38ufi) :4j1 w aw7ckg-y dory tightly to the nuclei are referrfyg-j1c u4o:)wdii87j3 k a bwed to as

  Materials in which the electrons are bound very loosely to the nuclei jydw,s 9 ver* -mvt9)+t4wg vsand can move about freely within the material are referred to9v9 sws)dyejt-,4vv+m* w tgr as

  A negatively charged rod is x 8 voo2fm2*gsbrought near one end of an uncharged metal bar. The end of thg2o2fmx8vo s *e metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They a4a:k2 yczu ri-re placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which zy cair: k4u-2statement is correct?

  How can a negatively charged rod charge an elect t7u-zcij,wgm)qw r, (n; via+roscope positively?

  An originally neutral electroscope is briefly touched with a positively * zt(/ybc 6f3eqw8 *h2hytujn charged glass rod. The w/qe3ntfu(b8hh zy t 2y**6 jcelectroscope

  An originally neutral + we. y j5uz*rt4p;iqlelectroscope is grounded briefly while a positively charged glass rod is held near it. Aftezuy5;jtlq .e+*wi r 4pr the glass rod is removed, the electroscope

  A positive object touches a ne5o 0(y9hgpx3 q p3jdmjutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but d 303yj(og5x9 h qjdpmpoes not touch it. What happens to the leaves?

  A large negatively charged object is placed on an inwjny 1wllg ix j-2+/p3i7xfy 4sulated 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, fg -7n4 y3+lwx2i1wy lpjjx/i 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 each ball?

  Charge is

  What are the units of the Couln6, ed zjr qdyia:r;;3omb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distan(vx iaxu; 6j9rce d. The first charge is larger in magnitude than the second chargex(ra;vu9i jx6.

  Sphere A carries a net charge and sphere B is neutral5mpun bej9 0o8. They are placed near each other on an insulated table. Which statement best describes the electrostatnubjp9 e8o0 5mic force between them?

  Two charged objects attract each other with a certain force. If the c(rz8b6 aykh ow- 7ybo ncbdp*,2g.c;kharges on both objects are doubled with no change in separation, the fw8hkpo67.gabcn (, 2- c z ;ydkbyro*borce between them

  Two charges are separated by2 1mm rkfhy(,wxz-x q5 a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, wq-z 2xmywh1k5 xm(,frhat are the new mutual forces?

  Two charged objects attract each other with a force F. What happens9y2ake+ gd ahi/a9r 6a-lkq0r to the force between them if one charge is do/ r2iq6ak9kyea +9ar0-hdgalubled, 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 proton are separated by a distance of 1.0 m. What happens toa2:tq.( u gdqu the magnitude of the force on the proton if a second electrodq.2t:uagq ( un is placed next to the first electron?

  An electron and a proton are separated by a distance o7gir) rur7 key:uu 3p4f 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to r3ri)ueguu7 r k74y:pthe proton?

  An electron and a protonmwt5p;ue9 y*.- nqqd c are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m clos;.*wp-m n5duct qqe9y er to the proton?

  A point charge of +Q is placed at i ,2ytf*y4tno g3lu1 lbtg yetkf/;3bed1** othe 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 electrostatic force acting on the positive charge at the2fti3t**ult1ob*f4ent3g o l / 1,kdyb ;yyge center of the square?

  A point charge of +Q is placed agvvms-wl8:86oyy o .yt 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 th my6oy8 vyv lo:.-g8swe center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is nsvk/g 1e6 ccdkn(2(+ dfvd / qvjtso;(ot a vector?

  At twice the distance from a point charge, the s bkmjf.1-r3tje; ma 2utrength of the electric field

  Is it possible to have a zero ele.,sk9knr( xg rctric field value between a negative and positive charge along the line joining the two c(xk,s kn .r9grharges?

  Is it possible to have a zero electric field value between two pmqmnk70gc;/c iv2z9o ositive charges along the line i c/n;mgc v7kom02q 9zjoining the two charges?

  Electric field lines near psitive poi1 -t5*iuv yxod4w :z z1vnm8jmgj h4/ent charges

  The electric field shoss1k0h 4z.v vbwn

  Can electric field l qqx 27y jqs3hgdh3l2)ines intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform etf:a 9pcd0(ov2p:b6qdmq0 yqll+ q yx4l7 8qslectric field. Give a statement concerning the esfa bqdy7c6m qql00(+o dv t9q qp2::8ly lpx4lectric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters awq za-;4h e4hnre each given the same charge, the electric n 4whqh;-a4z efield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform-7 mwkfml2(wxddt2 w/z1f3kp electric field is directed straight upward. What can be said con(mx2df7 3k 2w 1wfplzdwmk-/ tcerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric c0i21 uul3nj hdv/y.vy harge

  A positive point charge is enclosed in a hollow metallic sphere that is groundna euhuzi/1o2o)g)cr.c*j 7 ved. As compared to the case without the hollow sphere, the electric field at a point nhe v ucu .ora7)igc/*1zo) j2directly above the hollow sphere has

State three properties of conductors in t iuqw+ zdcuu.+gd,ocys,ys 2jb2-q 6 z8; m;qstatic equilibrium.

State Gauss's law.

  The charge carried by one p(7bkbya)1t ii7o :ac 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 .qh9h.* cghl fxf4k7rcharge of +2.00 mC. How many more protons than electrons does this piece of pla7.hg fx k.chhfql*94rstic have?

  What is the charge on 1 kg of prow pt5.x5qil0n -gmoh2tons?

  An atomic nucleus ha t 7y lg4yq187ptx)bubs 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 2.0 and -4.0 m10l-ue2 .bw11 zzeuwd6-q s9mjnqv plC, respectively. What is the magnitude of the electric force between them?u.s-92b1l d lne6 p11quw qjmzw -e0vz

  A 1.0-C charge is 15 m from a sw/6xa1d svam+va9 95opj1p itecond charge, and the force between them is 1.0 N. What is the magnitu5 96 da+psipjvwt/aox9 va1m1de of the second charge?

  Two 1.0-C charges have a q p: u51o;rjge /z2qt0 omcym2force between them of 1.0 N. How far apart are they?

  The force between a kq/7y e.i qg;rii91knd2xof ayw u.10 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, ex;ih krbqj7kgim.6ql195 v :xkperience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between them 7lk 9k6r;g1 x.jmqi:vhi k5qb?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cnc: 6nsmvz1d( e 05hr*rci3wcharge is at the origin, the secvwh scdc35z ri1* (nnr:e6c0 mond 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-axo4,ewej/ x7b xis. A charge 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 direce7 , w4/ojxbextion of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the followin;ldzbr 5ebe g7e1thw3*p; dkoy(j*1 m g positions: 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 magn*3ye m1wjd;e l dgeto*hzrk1(b7b ;p5 itude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the centehe7xa fv12;1wgi yxv7r 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 th2 1v;gv7fw7 1eahi xxye 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 axcm fbo2 y .3jdnp8n:0t (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude ofboxd m8cn fj0y2:pn.3 the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);dk+apzqc* 4 vi98h0-+g sol+tc5lqwgdm .+ yg Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net forch* +5i +coad++p y0q8z mgcdgskl9-gq4lw v. te on the 5.0 nC charge?

  Three identical charges of 3.0 mCgn:uv4o /uj s* are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What sn uo 4:/j*vugis the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sepaco+mwxeeu3ofwa,8 ir.hg (96n9z + n mrated by 3.0 m. At what poine+9 on86mi fr.owx( uezch 3w,am9gn+t, on a line between the two charges, would it be 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-Citu3lc:- 9* m20-vmxij1yg x0v qexyq charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force -c9l :m eu*g0y-miiy3xvvxx2qt0j1q on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wh zo,f4rp kw/.*q ywlf+ere can a third positive charge +q be placed so that the force on it is z,/ *.kqo w4frlpw zyf+ero?

  A copper penny has a mass of 3.0 g. 7/yb-rhd k*axbg:k3s ms 2zc0A 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 gravity by m7n88ag mjj-f the attraction of a fixed proton some distance above it. How far above the electron is the 8 f8m7ag- jnjmproton?

  Two 0.20-g metal spheres /gu.s)xvox7xw0g /j2 )c thqk are hung from a common point by nonconducting threads which are 30 cm long. Both are given identi0 ghtus72kxj)/ /.x wvgq) xoccal 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 is the magnitugcce6 z :c9jd,k1b- sqde of the electric field at a dista-cdc: b1ckj e,s6 gzq9nce of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1t dud+ql/4cp5 0z;qnl1zx+z j. g (tun.50 mut c.+z0;4(5gdzljztpq1/n+q d unxl from a 50.0-nC charge?

  A 5.0-C charge is 10 m frn 669r aznw1u taage3-om a small test charge. What is the magnitude of the electric field at theu6-3waa nr96a t 1ezgn location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the di.5ys5z- jo dtgrection of the electric fielddy -.soz5 5tgj?

  A 5.0-C charge is 10 m from a small test charg: c.eidkf2.tve. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge? vk.fiec2 .d:t

  Two point charges eacpj( ++n8obn gqh have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric fieldoq8+p +gjbn(n at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4mi 9;-/vem1 (hyk-ovcho;dks.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm msed/ mvvo1y ;(;hkc hmi-9k-oark?

  A 5.0-mC charge is placed at the 0 h +c6u9p3ynsrlbf x 0al(l.y3 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point 6u+ nr0.ls3yly h plca9(b 3xfon a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.- twlne7(y rx)0 mC are placed at x = 0 and x = 0.20 m. What il)r- 7 e(xynwts the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squv1 xu5 lp6ne5.hy/ 6 atvc4nrll 5,vjgare of side 0.50 m. The last corner is occupied by a/l5j egu1vv6rcpx 5h.an,t5 46 l vnly -3.0 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 (f7dp erk)s 5rplaced at the corners of the square 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 magnitr5 d()prs7fe kude 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 electrof5q 9e(z* 4q:nypx vuic field. What is the magnitudpf*y:x 4( q qoen5u9zve of this electric field?

  A particle with a charge oa7/q k7,jw6wid j /vtjf 4.0 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 ipxo9-p 5u/ipf n an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be su59 /pioppfx -uspended?

  A foam ball of mass 0.150 g carries a chargea3m(+c nub* dn 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 mbnnau(3 *d+c direction of the electric field?

  A metal sphere of radius 10 cm carrie;m*z:il7a qaoqj;p2 pe41z oq s a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm f jq ;427za:pi *plqm;aeozo q1rom the sphere's surface?

  A metal sphere of radius l7qqoft89 3pv8xt9yb 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center9q lbf3o 9pxt8 vyqt87 of the sphere?