State the law of conservation of electric chargzn/rakwkr9 y,98zk8hj -t9tke.

  Is it possible for two negative charges oa6 ymynb7mw+wn a4gwj +(lx6 7g7. fqto attract each other?

  Is it possible for a positive and a negative charge to attract each otherf 7/: l5t d xb3paejwfld94/lk?

  A glass rod is rubbed with a piece of silk. During the process the glass rod uw-q71x 2 dif:m w)9gfmsl eh/eb8uo4acquires umf heu1e-w w:)m7igdx9b2loq4 /f 8 sa positive charge and the silk

  A proton carries a

  The model of the atomwn1 tn/te0 wsq8;wsl w.*ew(m shows a

  A neutral atom always hvybcji/z0 us y (i5yef.)l;i p7+ yx:jas

  An atom has more eleco:e2;fa*,j ouz-fonctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to ei13cu bko7 b4pn1/ ttthe nuclei are referred to asneobb3ct 11 ti p47/uk

  Materials in which the electrons are bye fg:x6rg;c;zg515utaed2r ound very loosely to the nuclei and can move about freely within the material are ra1 g tuxyf5d r 6:2r;;cgzgee5eferred to as

  A negatively charged rod is brought near one endb0(c-cr skp 7*f r5tks of an uncharged metal bar. The end of the metal barksstr5(-f*c r0c7 bp k farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are placd ghj.r5l6+ uted near each other on an insulated ta6ht+d gj5lru. ble. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rodb 3t3/fsw+h /2lzlja; 8cap vl charge an electroscope positively?

  An originally neutral electroscope is briefly touched 5adw9.w jj yh;with a positively charged glyh j9.j;w5 dwaass rod. The electroscope

  An originally neutral electroscope is grounded brieflsv omc; ywps* ze,rw*: q0n5*ty while a positively charged glass rod is helo :vm**,tr *ess n cqw;50pywzd near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscf scwvd:1ygoqnk i) 11p1 ze (o2mb2w/ope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the lok2cw11svf:p m1 i2 edq(nyo/ )1bgzweaves?

  A large negatively charged object is placed on an insulated vmia*d*x:bm 6 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 ball touch the negative object. What is the*ad6vimmx*: b final charge on each ball?

  Charge is

  What are the units of the Coulouu9tohdt h(c22nb4a; mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger i5mj5fj +l t0fr 1gk-ycn magnitude than t 5 rjf0y1gc k-tlfjm5+he second charge.

  Sphere A carries a net charge and sphere B is nee 3w7z+p ujip/utral. They are placed near each7+3p pj/uze wi other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges onwv0l3u8cqm;e6 * a yuw both o608wl;a yuqm 3ucv* webjects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual atv*td 5xfy6+ 5tz-uobw tractive forces of zd-o5* utw+yfxb 6t v5F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each oth6zq5r/pxa 9:m( anea*2a xp qker with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distaq/a9nx( rpq 6ma5x pez2:a*ka nce 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 to x8y :kv(x(dagjec6lo 61+:b g7flqokthe magnitude of the force on the proton if a second electron is placed next to the first 6 6y1(lb8+:vaj kgq:7lk gxdeco oxf(electron?

  An electron and a proton are separated by a distance of 1.0 m. What(4f7j60flih 2 clqdepah-f(w happens to the magnitude of46fl(lj ff-2ceh7(0 h daiwpq the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton areh ;44873s drh 2k)sntjafmvtk separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0t4nms28dr4t73ksh j;hv f )ak.50 m closer to the proton?

  A point charge of +Q is placed at th iyuf -b re(*n1+len/ye 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 thr(en/+ r n*elb u1y-fyiee 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 the centroid of an equiw ot+)+rqraq(4/hhsd6 jnr ,tlateral 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 ah )qstrnr 4++haqot, rjd6/ w(cts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followin jjj,m(.hz m: 6mwl:tadr.a 0tg is not a vector?

  At twice the distance from a point charge, the strength m xu3z,x9:whzof the electric field

  Is it possible to have a zero electrz63iq1x 0ii4ls esu6sic field value between a negative and positive charge along the line qixe 1is60l 3i64 szusjoining the two charges?

  Is it possible to have a zero electric field value between two positive char ez ov(+fp,:4,z/ m wnbkbjg4kges along the line joining thjfk :+/gb,o4z,4wv mezpn bk(e two charges?

  Electric field lines near r*g0 en:n :prwpsitive point charges

  The electric field smeqz6 4; rsf-h j euei(.ckn6.hown

  Can electric field linenl /t*7rg6aqh s intersect in free space?

  A solid block of metal inck 8ko i7o-xz ur-y0z( electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in(krz 0-c -z7iu8k yoxo the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gil ibdz.+ yy,o6a,v4je ven the same charge, the electrijzv . ey6yd,ioa,l4b+ c field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woode(u kmj 7n5b bw jp7lxi1q2sq*9mji 8x.n table in a region where a uniform electric field is directed straight upward. What can be sa xwj8uq1j x7b79sp5jmiq2 m inb.lk (*id concerning the charge on the block's top surface?

  If a conductor is in electrostaticxb2r65g;m bxf equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metalliclg13bhd5t mh ;q0j-l djy +cz* sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directlq5btygl0jzlh 1d3 ;dj+cm- h*y above the hollow sphere has

State three properties of conductors in static equilibriu.7xm,jn ayhy152ulnlwa4 6 bg m.

State Gauss's law.

  The charge carried by one elwpo ip f51vw 7,zi)nj1ectron 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 hp+9pskmi k7cg -fql- 9as a net charge of +2.00 mC. How many more protons than electrons does this pief-s q9pi+ glm -k7kcp9ce of plastic have?

  What is the charge on 1 kg of 5 +dfkz mvk1avaahl*g5 y nvxqv(54 +(protons?

  An atomic nucleus has a char .5bxa-vmkd b grj;,aa o,z40awt3bt/ge 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 of4y eh-tx ta,t :f*a;kq 2.0 and -4.0 mC, r, yeaf-q 4tx: tak;t*hespectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m fro ;ax5 nn6 fw2s 2t/x2r-x4lws 1mqrjsem a second charge, and the force between them is 1.0 N. Wh5 nt6n/qwe1x wm;2ass4s xrrx-l22jfat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are thm6,/eu4z(iheg jn+p f ey?

  The force between a /il7ugg;2fn o 57inl7 6,hazw gi lnw:$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exper;w) zf(pn-vzkience a 1.0-N force. If they are moved to a ) v wp-zfk(nz;new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0p(h/0 pmpf0pok 8l)u d 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 the 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge ahp/k0 p m)8fpd u0po(lt the origin?

  Three point charges are placed on the x-axis. A char 3gcp6sgy vhp 12kc6b/ge 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 direction of the electrostatic force whi pgg2s3cy6 k h1b6vc/pch acts on the charge at the origin?

  Three point charges are located at the following positions:j) i)8jl1gjhe2b 94vn+9f gy murjhu; 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 magnitude of the force on the 3.00-mC charge?y)bmejvg4u+ uh rg l9jj29h8;fj)1 ni

  A point charge of +Q is placed udh5vmy 1ij/8r b+7 jyat 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. 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 corne8 1jm7/+jduryivy5b hr?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = ;tjg km 9z;y0h-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 n;9 g;0yzk htmjC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC1.he ak,4gmsjt x g2w: is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directisjga2gt w:me4.x,1 khon of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equi7 p a:vyubg qd37n 31tux-xrmxw6-ou1lateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one o7-7 y3ruv:p1dbw 6-m3nuaq xx1t oxguf the charges?

  Consider point charges of +Q and +4Qn ksar phst+n9yt*0y479s0 ha, which 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 electrostatic force acting on ts4h7s0+a * pny9tsar9k0y hnit would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x pgf(b- :x 2yxi= 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zero?bxfy2(x g:i-p

  Charge +2q is placed at .kue t h*(p/ yyj6zcs6the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the yzjty*u.ec/ p6hs(6k force on it is zero?

  A copper penny has a mass of 3.0 g. -pp/m atjgq * 62xny5-u:lmj)ie szh)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 fq21*9-z vqx 8yjmg(l;rb vtqtorce of gravity by the attraction of a fixed proton some distance above it. How far ab8q-2vjq t*b(x v1t;gml rz9qyove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads+nsl d6dny)(j which are 30 cm long. 6sn dl+(dj)ynBoth 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 o (8jnm0qm a46k4licnfml/ /tof +40e. What is the magnitude of the electric field at a distance om/nal mi(4j8cf to64n/l 0 mkqf 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a disw rm oyx( q(qnf30)lz:tance of 1.50 m from a 50.0-nClorqnz w:f q0m(y(3x ) charge?

  A 5.0-C charge is 10 z jcwvbd) oum0f1vx *3qb (4l*m from a small test charge. What is the magnitude of the electric field at the locajmb vq w(d3uvox4c1 lb*0f )z*tion of the test charge?

  A 5.0-C charge is 10 m fro-y md 4ekw-9vp ;q 0swq:f.nuam a small test charge. What is the direction of the elmq. 4v9w-q;:se -kw0audpyf nectric field?

  A 5.0-C charge is 10 m from a small test charge. What is eql v)ddb0rxc67-:krh l9:wk mtzk-v/ h*z4hthe magnitude of the force experienced by a 1.0 nC charge placed at xdwz0elkk6c r/ qm r 7-v)v::-4hhbdthk9zl * the location of the test charge?

  Two point charges each have a value of 2 vo(c lvm*l/.-fpahc3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway /f2pm*clc- vvho(l .a between the two charges?

  A 5.0-mC charge is placed al kybtm 5x9a(4t the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is thya t5(4kb9xm le electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a mburm2dh9-lt5 eter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line jou rd-m5tlh 2b9ining the two charges is the electric field zero?

  Two point charges of +3.e)hi,d m)ep. 0rz ju0n0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between t)0)d rnh0 epi jzm.,uehem?

  Three 3.0 mC charges are at the 3n:pr)3w akdn three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at thennpak3 d:wr) 3 center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners o1qsv2bjc k02 gf the square as follows: +4.0 mC at (0, 0ck2gvsj 2q 10b); +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 wu-ipdl c(n6z* -(afeohen it is placed in a uniform electri -6 niup* ld(-o(aczfec field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass fc(ucsj;3 b ld//0ggb.l, uluof $5.0 \times 10^{-3} \; kg$. 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 elec7.r yd7wy m3bztric field of 6000 N/C pointing downward. What charge must be placed on the ball fm r7bywyzd7.3 or it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is p/ i1cthacb+(ulaced inside a uniform electric field, and is suspended against the force (ac1+ ci bh/utof gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries 5y;i9cs9pvef ,0lqsf lr-p9t a charge of +2.0 mC. What is the magnitude of the elrsf9 e5p9l;qplf,s ctyv9-0iectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whnj bv-sd 7xy6)at is the electric field 6.0 cm from tbj7v)sy-6 dnx he center of the sphere?