State the law of conservation of electrith oka1qvnrie-i- 4., 7p,b lvc charge.

  Is it possible for two negative charges to atd1oqts5 hz*.v1a 6m uhezn1. ytract each other?

  Is it possible for a p,)+ u5m,bkp- ckfo 1xekgd s:cositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the m0 :qcvc01ffm process the glass rod acquires a positive mc0fc:0f 1mvq charge and the silk

  A proton carries a

  The model of the atom uksxzyq-b ,98 shows a

  A neutral atom always q)+0z0y4wkqrxx. wzk has

  An atom has more electrons than protons. Thep 5xd3 w*/tcnh atom is

  Materials in which the electrons are bound very tightly to the nuclei ar(u *-f0jdg 1rbilbk0x e referred to as* x u1ki(bbd -gflr0j0

  Materials in which the electrons are bound very loosely to the nuclei 3jdqk;nf.yow4:zgx 8:e j4azand can move about freely within thqa: zogjnf.34xj dw4ez k 8y;:e material are referred to as

  A negatively charged rod is brought cqsql ( +/i1pdnear one end of an uncharged metal bar. The end of theq1c (p +qls/id metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and spheres v7we h*)zn7g B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groun77nwh*g )svze ded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posx,b*)4a qewni*ewcxu in /,5eitively?

  An originally neutral electroscope is briefly touched with a positively chaoe :ozf2io ,,urged glass rod. Thefie,o z ,2o:uo electroscope

  An originally neutral electroscope is grounded briefly while a pyn8dj4/n;y; w eu+kv9w k7joq ositively charged glass rod is held near it. After the glass rod is removed, the electro/d w;j+ykjk 9ov7ne8 nqwyu;4scope

  A positive object touches a neutral electroscope, and the leaves separq okns;hq , 8uw .sv)je7k4p.gate. Then a negqs ju.q h; n.we, vok84spk)7gative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated ta3m: iyy750xpw)jmpv able. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A se x5i)jv 7amp3wy mp:0ycond 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. What is the final charge on each ball?

  Charge is

  What are the units of the C+od v)ge,xn cn(c64g3i8 s raqoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separ-gqh6v/ ku (w7g 1awaot a+q 6k-lkc/hated by a distance d. The first charge is larger in magnitude than the kha6w cha u7vltgo/61-k/w g(kaq -+qsecond charge.

  Sphere A carries a net charge and sphere B is neutral. 4kf aq v3z.lw)9ghov+ They are placed near each other on an insulated table. Which state39 +hl avo4w)qk.vf zgment best describes the electrostatic force between them?

  Two charged objects attract each other with a certain forw4g2 nkzj( jd*ce. If the charges on both objects are doubled w4dkjg2*nwz (j ith no change in separation, the force between them

  Two charges are separ rzi9w6 b5nsk6ated by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a n6w6 9 sbirkz5distance of d/3, what are the new mutual forces?

  Two charged objects a0 hun yeb 19ff-6nuogxu;4)z:nnts+z ttract each other 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 original value? The forcet y u+x9zfnn6)eu g;1f 0nz4b:n-uohs is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What hap:x to q,)gz3jmpens to the omqgt ,j3 z:x)magnitude 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 happens t,ns s.t 73lcba 8rrhm:e5pz) po t,mr3e :p n8)z7tc hp5.al rsbshe magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m.jjfjxhd 0 8b/5 What happens to the size of the force on the proton if the electron is moved 0.50 m closer /8xd05jf jj bhto the proton?

  A point charge of +Q is placed at the center of a squayg 7r93gavm.fre. 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 tgm9 yf.gr7v3ahe magnitude of the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed jtv(jb-ph 0y8/)azt aj/d3 n:c 4n lmwat the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic forj: alv4h0pd/-a 8wt z(b3 ctjm)nyjn/ce 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 at one of the other vertices?

  Which of the following is not a vector)zokoa3q35o74z ps f u( ow5on?

  At twice the distance from a point charge, the strength of the electric j*lt,pfr*w v 0field

  Is it possible to have a zero electri ;h3h(vdw o;9bx ;yawcc field value between a negative and positive charge along the line joi 3;yx;9 aowdhhvw(;b cning the two charges?

  Is it possible to have a zero electric field value between two positive charh-z(xsij eay o vyo*p(ol9;3(ivf)5fges aljf lxvo (py(3*(5s ;ea io-)9hifzyvo ong the line joining the two charges?

  Electric field lines near psitive pwji, +mu47cunoint charges

  The electric field sh6j kmn5- kl2wn5krrgmrt (5n1own

  Can electric field lines intersect in free ry) t /z(7)*h jb(pnfy.qjuqjspace?

  A solid block of metal in electrostatic equilibrium is placedw1 okf-u93ana in a uniform electric field. Give a statement concerning the electric field in the block's interionfou1wa3 a9-kr.

  If a solid metal sphere and a hollow metali(a)5 sbtyb5 j) +it8g/egbfbg*bn 0k sphere of equal diameters are each given the same charge, the electric field (E) midway between the center andgyi*t a5i)0bgb (gj8 b/btn +s kfe)b5 the surface is

  A cubic block of alumini)f :3r a6yud3ecfcb; um 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 the block'sbdy6f33cfr ;c a)iue: top surface?

  If a conductor is in electrostatic equilibrium near an el .xj20;*mw wj85 mi5 gz5ana *eurxugmectric charge

  A positive point charge is enclosed inoj 7yai0 jw*z* a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly a zji y0o7*w*jabove the hollow sphere has

State three properties of conduke a/ar k o bd2h7xakf*yf-6clz2a296ctors in static equilibrium.

State Gauss's law.

  The charge carried by one el)mh ng4)nxcz5ectron 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 +2.00 mC. How q6lzoc60:y gbmany more protons than electr zlgyq6bo :0c6ons does this piece of plastic have?

  What is the charge on 1 kg of d0 c2veb sch*6protons?

  An atomic nucleus has a charge ofql: l8lmln pqr:g z8qn+24 :w s-jon5a $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, havex pgc(i;:ld p/ charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betwel pg;dc:px/(ien them?

  A 1.0-C charge is 15 m from a second charge, and the force betxck lnc04 gp +iaek)(;iz xf.e;o9jx:ween them is 1.0 N. What is the magnitude of t)ka j ccz g(ike+;;9xexpo.fi4:n0xlhe second charge?

  Two 1.0-C charges have a force between them 2datg yx:l.(wy3uc4 oof 1.0 N. How far apart are they?

  The force between a awzy vq(3b o x*,l;,p*jha0nu$30 \; mC$ 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 1.0-N forcrmu6d)xgt 9ef*)gj 9p e. If they are dp xm)ej)g6f* 9gut9r moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges oj 9 tky::tym9of 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 at thejoy tt9 :y:km9 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. eih d0oe 9cm/ag)rd7o ux: s 7ht;8.o,,vx wcg A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +o,or9g d7/e) gthh8; ux7c.w ao cevm0dis:x,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 followi uwm ei;2absdo wx.*6i/v;/ pnng 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 magnitu ;/awnemou2v. ;6 bxp/di*si wde of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a u9o,p qtt6vd36yli pi00g o)dsquare, and a second point charge of -Q is placed at the uppd o003i)li v9gu poty6,t dqp6er-left corner. It is observed that an electrostatic 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, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 4 ugp(mq.lsv(fz: 6x j5.0 nC is at (0, 0). Wha4uxf gq(6m .pz v(:sjlt 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); Qm; uyk2 *whw2+55v5ouwq g tdg3 = 5.0 nC is at (2qw duw55gm;t oyw2hg+uv k* 50, 0). 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 equilat cyof30c a9s-2bk ;geo45pykberal triangle which m cs3o; y0ea f-ckpygo94bb52keasures 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 are separated by 3.0 m. wbn rgf(r;dj./d.2b*i i 2zq 6nzbvk7 At what point, 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 zbkn.rdj *ibqg6f2(v dzzi2 7r/n.w ; bero?

  A +3.0-C charge is at the origin and a +9.0-C charge is a uoyy.;,+v hm wjdqh4/t x = 4.0 m. Where on the x-axis can a third charge be placed so.hv, + 4mj;u hyw/ydqo the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at xcnl p((gstm7i 3c: x8o = 2a. Where can a third positive charge +q be placed so that the force on it is zeroncc3g t 78xipml:(( so?

  A copper penny has a mass of 3.0 g. A tota 9pt:- qd;bj ta5; qga.gmsk7/e2 wpkrl 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 u 3;n/lcp7 b*pm +psanup against the force of gravity by the attraction of a fixed proton some distance p 7npb*lc ;u/a3pm+snabove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common l*.p6vq4 s ndapoint by nonconducting threads which are 30 cm long. Both are gn4 lq*psv.6adiven 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 +4ol oe8d:+q i5j; 4jx fq1f8urx0e. What is the magnitude of the electric field at a distance of 1.0 m fo5qlf4+ 8djx uo:e;xifj8r q 1rom the nucleus?

  What are the magnitude and direction of th xo:;-z s 9/o2nmzh1cki;dp pue electric field at a distance of 1.50 :o2-x dziocs;kp9nm pu; /zh1 m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small x0) x onwul/ 95cttdwf/00 toktest charge. What is the magnitude of the electric field at the location of the test charg5xuo t) 9t xw/0knt0l dfco0w/e?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the e *v33 /hvps2k j0u+ td ya:nss+vitrd8 sr:i +tnhks8 t/up3y2vs*j3v d vd+a0lectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the 4 (:z7dmzvy rzforce experienced by a 1.0 nC charge placed at the locationmzdz:7r(vyz 4 of the test charge?

  Two point charges ea*ohprw8 * q sp*e-s-vcch have a value of 3.0 C and are separated by a distance of 4.0 m. What **qshw sop cv-er8-* pis 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 stick and a -4.0 mC charge5m:p-fig(7lfzl iir + is placed apz:-g(i7ilr f lmi f+5t the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 c(0kmx24 dyc/z4lx sbee m/ qe; 3r6le 3z9gkvvm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the kmxzl6bz4d ; /9y0cv/3q eglx(mkr4ee23esvelectric field zero?

  Two point charges of +3.0 mC and -m+w g:9gb(sbc 7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field +:(b 9mggsb cwat the point midway between them?

  Three 3.0 mC charges are at thnxvz9f6k7m id9cuqe l2:(h:poi) p y3e three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Finlqp fi:o)9k7 :v62xdcymuh eni(3 9zpd the electric field at the center of the square.

  Consider a square which is 1.0 m on a side.g :u0j:l wib:n Charges are 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 b0:g :unljw:i). 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 when it is place3tqjan:v3q7m/r hm3 ic :4w z zqzo2t:d in a uniform electric field. What is the magnitude of this el33t3/ hqvt4a:zoi7 rj nz:qz2qc m wm:ectric field?

  A particle with a charge of 4.0 mC hm )fhkf8p/ba3 hfz49rrms9; kas 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 x9x: jqw5e. pi*ftj /up6 3kxpfield of 6000 N/C pointing downward. :ix5txpx9u6 wje/ f.qp*j3kp What charge 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 balbhjbu *d b955cl is placed inside a unb bbd5* hjuc95iform electric 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 +2.0 mC. What is th47 b w wwcpacu02td(l3e magnitude of the electric field 5.0 cm fropl34 b(dwwtcu072caw m the sphere's surface?

  A metal sphere of radius 2.0 7vd4uhysy(0bgc5 +bn jz3*cocm carries a charge of 3.0 mC. What is the electric field 6.0 b*yzo 70jscg 4cbd(3+ uv5hnycm from the center of the sphere?