State the law of consel r--)c0s 2ri n *vz;+77omtpmbqtzokrvation of electric charge.

  Is it possible for two negative charges to attract each other?nh w5d(3 ky0pv:l,m hug3x m9a

  Is it possible for a positive and a negative charge to attract each othc n 5omaxgg0 6-6s*ojter?

  A glass rod is rubbed with a piece of silk. During the process the glass rod* 7u43,1ev6h y eag q)mjs0jykj.mkdc acquires a positive charge and the sil1k j7 0mca6kdvmuj3sye.4 ,hy q) g*jek

  A proton carries a

  The model of the atom (gov2 ;jmkvx r-86fnx shows a

  A neutral atom always q::.rg3/dglyqz f af8has

  An atom has more elect of g.vekjz vt4m+:/.grons than protons. The atom is

  Materials in which th ;j y:hr,b8./inyjy rle electrons are bound very tightly to the nuclei are referred to a y/lr ,;ji8yhjy :r.nbs

  Materials in which the electrons are bou hnppr f.5n,m8r,ts-rwz.d* d nd very loosely to the nuclei and can move about freel5hsnrr.d,w.,p*f8t- mn przdy within the material are referred to as

  A negatively charged rod is broughth 6wdojxw96b9 3751 rpcejqu w near one end of an uncharged metal bar. The end of the metal bar farthest fro1d5 w6obhx769w jjcq pweur39 m the charged rod will be charged

  Sphere A carries a net positivefwrc, 1pw:0i1s rv+yb charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere:sr1+ cpfv 1ibwwr0,y B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge lx5 l/3 ,b4k+gjfhwq fan electroscope positively?

  An originally neutral electroscope is briefly touc38bgy:jh ux .boqk6e .hed with a positively charged glass rod. The electroscope:8 hbu. g3.eobxky j6q

  An originally neutral electroscope is grounded brieflyj s,ezgjh,t2m*, b nap0s e-;:4bmexs while a positively charged glass rod is held near it. After thms;,,,e:nx bebm hgse p2t* j-js0za4e glass rod is removed, the electroscope

  A positive object touvc)7mdm xi/ a:ches a neutral electroscope, and the leaves separate. Then a nd va:7)mx/ icmegative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged objectv +3 8o3vk2df7ppum xp is placed on an insulated 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 b32mvpf v8 xpo3up 7k+dall touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constantnk 0 w3e+miaj- $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge *lfi(;t un3a xaax 87nis larger in magnitude than the secoax (a u8l*axn3t;7nifnd charge.

  Sphere A carries a net ckbxlg 0uv4 e(1-esv:fb51cx k harge and sphere B is neutral. They are placed near each oe:5xf4kk0c1sevv1(- b xlb ugther on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other jzdb:d,.u :s bwith a certain force. If the charges on both objects a uzs jd:bb,.:dre doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exerrx. k2p v 1s(f(v5agsrt mutual attractive forces of F on each other. If the charges are separated by a distance of ds a gfx5v 2pv1.(s(krr/3, what are the new mutual forces?

  Two charged objects attract each other wit lf-kyreb2/: bh a force F. What happens to the force between them if one charge i2lk:by eb-/f rs 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 proton are separated by a dista5n gsop3izowf2 1-x, ance of 1.0 m. What happens to the magnitude of the force on the proton if-gi awx532,po1 ofs zn a second electron is placed next to the first electron?

  An electron and a proton are separated by a su,gby5, ey hia.zh3;wc,te+, ybs6 vdistance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed n 6v3hs zu,eh; yybw+ asy,b ,5gt,e.icext to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens to p ,gpg3e*os3r the size of the force on the proton if o,p s3 p3*reggthe electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at7cr *zdnqetnc7r3f *, 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 d*c n7,ctreqn *3zf7rcharge 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 thuqu ,9s*1kj+6q kzt0gea nld )e 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 l*ed ,nuz6+q9)jga10u s ktkqcenter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is no;d* :c tf+pquut a vector?

  At twice the distance from a point charge, the st w0ne0f21p ( lkxgxmt.rength of the electric field

  Is it possible to have a zero electric field value be-vddt ke,i m )q)ek/50sjag8dtween a negative and positive charge along the line joining the twoik)ve0- t)sgemdq5 /ka ,d8dj charges?

  Is it possible to have a zero electric field value bea k;56 uyn(xistween two positive charges along the line joinina y; (sxk6uin5g the two charges?

  Electric field lines near psit8 brwhag b 5jpta6:b5-ive point charges

  The electric field showc1sujm )4 l3a8mc7wp bn

  Can electric field linfb y 2xn98usjuod1; 1qes intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in vhv (+yno1oj07:tuse (vp ig1a uniform electric field. Give a statement concerning the electric field in the bl t+pevv o0uhs 1(oi:y(gnjv17ock's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters a1n -geejjqn226 lu)u0g r5ouhre each giu ugne-gj l2u0 25 1qer6h)jonven the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woodenuamdhwf7y(8-it /n r1 table in a region where a uniform electric field is directed straight upward. What can be said concryai7d whm8tun/ f(-1erning the charge on the block's top surface?

  If a conductor is in electrosyktt8rcx jldwl 33ur y )p8-c6x( r1)ftatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic s q-bgz-fr*p.3xnn7+if*1b rge 4w v - shayd-sphere that is grounded. As compared to the case without the hollow sphere, the electric field ay-z4 fahp bnr * sgsr-3x+eb7-w-ni d.*1fvqgt a point directly above the hollow sphere has

State three properties of conductojiuju(* qo9ay g:sr5ri, 0r9ers in static equilibrium.

State Gauss's law.

  The charge carried by one electron iss.9- sxi+gt nwd kfn7:w (9jgn $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +dz0tftl1j)unraj ; 512.00 mC. How many more protons than elecd)ut1l za1nrf0 j j5;ttrons does this piece of plastic have?

  What is the charge on 1 kg of prc jwg0h ; )ag7ab2k.ee4 dkq:eotons?

  An atomic nucleus has a charge-e95a qp ot1cb 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 chaf*vc8c :;-vq.a vp; lxe ju,cxrge values of 2.0 and -4.0 mC, respectively. What is the v,;x . ucvv-clf8x ;eqcj*p :amagnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the e g6 9-3wje2bek c7pl6 yn.f)zd7gyht force between them is 1.0 N. What7t negp3czb w2 9)66lhje. 7y g-dkeyf is the magnitude of the second charge?

  Two 1.0-C charges haveofy x 1ny)84by a force between them of 1.0 N. How far apart are they?

  The force between a g7va/ 1yrcos q,:a or*$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm aparm1o edv7bz 1o*m)kjaiv5dr5*t, experience a 1.0-N force. If they are move*odvz57m5 e1 dv im1o*bkjr )ad to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point2p--wjv2 3 bdxwge0as charges of 2.0 mC are placed on the x-axis. The first charge isd-s g- wp03a22vb jxwe 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 origin?

  Three point charges are placed on the x-axis. A charge)8peta3 kfy/j 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 cpkjy f8)3/aetm 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 posit;ynh3.nxf1q-6kmvezq pri oki /j -81ions: 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. Wh/ noy 1xp-ei1 vn8zqf-6 k3kjqi.h;mrat is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a*et8*v mlr/ c//wqm xw square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostaq/ em /wvmcwr8l/ *tx*tic 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 third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, zvv)31ir xpw;n+k rjl/1;uwfkrf :g-0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC char 3kw+rjug/w 11 k;v)-flnrzfxi r ;:vpge?

  Q1 = 6.0 nC is at (0.ph/vmt z(hp9 k lj 5wksz 3l)3h9f1du. ucyq:630 m, 0); 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 force on usj)y35wc :h6 3lz um.t lh/ q(1zk9dvf9pkhpthe 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at thec3ebq5x;*iv, b9 :mcml u.v kx vertices of an equilateral triangle which measure*.3cmc9v m exk,l5 i;ubxvqb:s 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, which ave 1o;v w-sj8lre separated by 3.0 m. At what point, on a line between ;lowvjs8e -v1the 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-C charge is at x = 4.0 mpm,7k4g0rey, dfw-c :v df 22w2jfpco. Where on the x-axis can a third charge be placed so the net fo4,22vc d,w0fp e7 kfy cf2 :jrwmp-gdorce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2ws p)3wzk4dcys9.ytl 1 no6 f-a. Where can a thirtssc4 p -y9ny1)owf6.wzldk3 d positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass oj/r; 1ka-2 scci4zixnx v j+j*f 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 gravity by the a/df )z2o ocm2.n jfk5fttraction of a fixed proton some distance above it. How far above the eleco. 2)k/mnfdff25cj o ztron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductinkiu (t vht.2*xu5hk 6ag threads w5.6 x hhutu k*(tvk2aihich are 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 is the 6p9 kg0zi nnc(magnitude of the electric fieldnigz 9pkc06n( at a distance of 1.0 m from the nucleus?

  What are the magnitudw a8t 9xssuq16 wdv(a8e and direction of the electric field at a distance of 1.50 m from dwwtq1v s 9u(86s8axaa 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charger o .7w4ikmjr8ph:.h q. What is the magnitude of the eleki:4rwq 8ohh.mj r.p7ctric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the e092b qok8z mxtnjq37 rlectric qzbn 28qok 097jr3mx tfield?

  A 5.0-C charge is 10 m from a small test charge. What is the magni)dbg7 ga2 u-pgjyg (d3tude of the force experienced by a 1.0 nC charge b7)2ugdgyja -d3(g pgplaced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distanx* -lkq)z9tgfrl1 nn)2t(bm lce of 4.0 mz(2l llb9qn*-ttf)gn k) rx1m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sruod04/a2d ra 0 tuxy-z)is 3ltick and a -4.0 mC charge is plac43iz2 )srartl u/ax0-ydu d o0ed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed 0milka5;1kcqx 0ii7e at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joininc50m x7i;qi1a 0kei klg 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 = 0.20 m. x* xh rpc,mr qd0-,z25,zwx r d)dvdp, Wh x2hd, p,p5x)dr0dc,zxmzwvr -r q,*d at is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are acbv;v2wr kv 81+)visc t the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find k;)s1 vcr82vwi cbv+v the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges a28icnuhm-2m *dfo g-nk 3 m;axre placed 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 magnitude of the mc2numi3okf-h8;-ng xm2a d*electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placedju3 0u9tpvsiqx 8/u9o in a uniform electriux pit j9uous/8930vqc field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass ia 1kaa:1kp h(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 fielw)jv:0f6kcyk 8 aieh 4d of 6000 N/C pointing downward. What ch v 6i0hj4efc8kw )kya:arge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball: 0j.rjn ygwc9 is placed inside a uniform wc .jg 9y:j0nrelectric field, and is suspended 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.lif,j v )buy9 7:wpb yhb5xp1)0 mC. What is the magnitude of the electricy y:) p,bjlu9wp) fbix51 vb7h field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. W:jhb b2a v3s*fysfs 48hat is the electric field 6.0 cm from the sv:s34fj8h2 sbfba * ycenter of the sphere?