State the law of conservation of electrl pzxizlq1t3fd9 y8 ;9ic charge.

  Is it possible for two negative charges to attract egv 15izelcf: o/e, ,wxach other?

  Is it possible for a positive and a negative charge to attract each oth)q**qysn mwu2 er?

  A glass rod is rubbed with a piece of silk. Dbwgua9w7 j30t uring the process the glass rod acquires a positive cha0 tbwgju9aw 37rge and the silk

  A proton carries a

  The model of the atom shows aq(t,+hl f n+duq:ytk +

  A neutral atom alwaysw4w+x2w xyba/ has

  An atom has more electrons than proton5ayr kicf5sh+9w- w g(s. The atom is

  Materials in which the electrons ar aracy:nv9, d u;71sdq jip-3ee3;xfse bound very tightly to the nuclei are referred a esr c19:-;3yv ,x7jadpieund q sf;3to as

  Materials in which the electrons agir g g6ou2+.sre bound very loosely to the nuclei and can move about freely within the material are reggug6+i.2 o rsferred to as

  A negatively charged rod is brought near one end pc goqbgn) j/5 i**o/)dxdrk, of an uncharged metal bar. The end of the metal bar fart),)x *db/opjgi k/ nr cdoq5*ghest from the charged rod will be charged

  Sphere A carries a net positive chargpfvun5y udel; +8ze-) e, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Wfuy)8ul+ 5 pnv -;zeedhich statement is correct?

  How can a negatively charged rod charge an elyqw9q-f3a qst)k-k 9rectroscope positively?

  An originally neutral electroscope is briefly touched with a positively charged bo(oco4o ;d9 go list 4mn.;ofd)d75wy )ad2u glass7o);ny9(w otiddo5)sl f2o;ag d4.bcdmoo u4 rod. The electroscope

  An originally neutral electroscope is grounded briefly while a pclgz6pe d -zsu-.l2i,wfzh 64 ositively charged glass rod is held near it. After the glass rod is removed, the electroswzlp,z2i6-h. 6sef4c z-gldu cope

  A positive object toucm)(i4 kelx8t-k kqxh :bbi3r 8hes a neutral electroscope, and the leaves separate. Then a negative objec:x(tiirxb4k 3kblq)ekm - h8 8t is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an ins rhe65 h4is;kwty7/s bulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls al/kh;s6r 7ti5ybhws e4ong 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 Coyqkip+bx) t:jpk3. yss /79b,( gkxusulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chart2topqp mw 68 o*ax.mil2g4s: ge is larger in magnitude than the second ch*i 4g8xm2:ts2powta6 pqml.o arge.

  Sphere A carries a net y6z89lw+ q86/fs fpnn qohb/ncharge and sphere B is neutral. They are placed near each other on an insulat o96nbnw yqpfhl /fz8n/ 86s+qed table. Which statement best describes the electrostatic force between them?

  Two charged objects attract g 53az,j:a rzreach other with a certain force. If the charges on both objects are doubled with no change in separation, t 3 z,ar5z:gjarhe force between them

  Two charges are sepaoca0c 7fe9f5bm9.f+e9uj xr srated by a distance d and exert mutual attractive forces of F on each other. If the charges are separatefca9bj5s 0 x7 +eu.cfro f99emd by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forl 0n2/u(slnacce 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 forcesa 0lnucl /n(2 is now equal to

  An electron and a proton are separated by a distance of 1.0 m. Whx4xu n .uun:1vat happens to the magnitude of the force on the proton if a second electron is placed 4u1v:x x. nuunnext to the first electron?

  An electron and a proton are separated by a distance of 1.m yj+5( u,sgrbnqxml*gdsivj046db 6 e3s: 4g0 m. What happens to the magnitude of the force on the first electron if a second electron is place+u r0y4jv s3 (lbm*ng 6sgd4mqgdbxjs,:i 56ed next to the proton?

  An electron and a proton are separated by a distance of 1.0 mux xzkq- -.jam1j14df . What happens to the size of the fdmjf- k-j41a 1.qxzx uorce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second poixiu:t,c kcuvl +2 g8:jnt 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'i,l:vkjg8uxcut2+ c: 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 place(pm7: cmb6ku c+j rcg,d at 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 the center charge due to a third charge of +Q placed at one of cbg +ur :cj,6 mcpm7(kthe other vertices?

  Which of the following is not a gxczj ,;: kh.( v-mcdscr:zh ,vector?

  At twice the distance from a point charge, the strengtgi udb8jk3au /; 0y9zeh of the electric field

  Is it possible to have a zero electric field value between a negatp6u4ikkco 5hb uw (uauz-.;g4 ive and positive charge along the line joining th - o6uiu5(kwkpz a4.ch; ubug4e two charges?

  Is it possible to have a zero 9 k )bd qj6q;,ci l0qeid(9flmelectric field value between two positive charges along the line joining the two charf i60l el9dqj9)icmq;( bq k,dges?

  Electric field lines near psitive point n2k 4(y nbsbvh1k ;9skea n7r5charges

  The electric field sho 5w1k(b,qy3wl nvhhv,6 sez6 zwn

  Can electric field lines intersect in freexo+u iiw(,5- h y4phiw space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform urcx2 m6tni5)anf 8b5electric field. Give a statement5rnimf)8nta bu6xc 2 5 concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphereonk- ykko g1.7 of equal diameters are each given the o7 g1n.okkyk-same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regio+dghie f lm2e0ph0yi+k: )q9jfaz :ok 3x u62jn where a uniform electric field is directed straight ji0+f hf6 om2)2el:pkz0u ijq ga3dy+: kx9eh upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium n:mo :.rcv7 jdeear an electric charge

  A positive point charge iq*l) z)qtuj0b s enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point dir)qzutj0 ) *blqectly above the hollow sphere has

State three properties of conductors in static eqc *sx6r81;wjy jr0sz/ ut jvvxvo/ 0,vuilibrium.

State Gauss's law.

  The charge carried by one e m 0- mw6egu u;;yf4g62afcglklectron 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 mCl x-hqm aod;rl a l1e3m/6.n9e. How many more protons than electrons does t;1m.xhml 9n l re6-eaod3alq/his piece of plastic have?

  What is the charge on )lt 3b 0 kha1mh80rfhs1 kg of protons?

  An atomic nucleus has a ch w30;5y ohfp-nghd(lu arge 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 mC, r(3e,zvmp)dchdn6rv( espectively. What is the magnitm h (pdc6nrd(vvz ,e3)ude of the electric force between them?

  A 1.0-C charge is 15 m from a second char.u e j3 k-/ey;seplu(dge, and the force between them is 1.0 N. Whesykup ude;3-(j. e l/at is the magnitude of the second charge?

  Two 1.0-C charges have a force between 76 c+v ;jn::cd 4taugap9kpcxthem of 1.0 N. How far apart are they?

  The force between a b 8+hu4s9x8w. n edd(f,kzblgh8xr 6c$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm a6e q3j+g;iuq;x3 :muwj 6qk xxmz:pd/part, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between : qd6/e3w zj upmq m;gxx j6:;+x3ikquthem?

  Three identical point ch fhrvg-perh0 / ffp:u)f2 0ea:arges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the 2fh-p0) fuf eh0r::a/ rpvegfright 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 of +2.0 mC is pl*2.l dfdqjml e1u)g n.aced 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 electros*nd21 d. fugl.mje) qltatic force which acts on the charge at the origin?

  Three point charges are located at the follci: mb+q:q cqhr t0+b;owing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x c:i:h+m b+bqq0 ;trcq = 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 placed at the center of a square, and a second v v*a :/d i0i;kjtad1opoint 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 ced0: vo* t;ii vdaj/ka1nter. 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); Q9 +gg ;pjzbc. -yqzru g;.hf+gq.5gj p2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is thg+ggjhp9gyc ;+gp-b..z ;qzfu. rq5 je magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 =xux j3)7yd:sps4;jzh b36n d-m t2aam -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 thea :2d43h- p6najzx7tdu m3xmj)bys s; 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an eq 4hjz -t6bg,kl3u*xsl uilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any onz,lkl- b3 ug4h*6t jsxe of the charges?

  Consider point charges of +Q and ), gh yir i3q;6ggvu2b+4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to pl2 i6yu ;vi)gqh,bg3r gace 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 = l pe+7m zqc*yk4l,hy64.0 m. Where on the x-axis can a third charge be placed so the net force o pc y6lyzk74+ le*qm,hn it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wherek.k62 9didb*cc6wr z/ de/ mto can a third positive charge +q be 96db 6rewk2o/kct*z .mci d/dplaced so that the force on it is zero?

  A copper penny has a mass of kaqqf; 1u mxli ()c-/**nalz q3.0 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 g 7 xo/il20)j;ctl unxafi*n9qjb o)v. ravity by the attraction of a fixed pijxl0j*ov792t nuo) . f; abixlc/) qnroton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from h)piqvn( h36v a common point by nonconducting threads which are 30 ch3n) 6v(ivpqh m 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 magnitude mmfm)+b3tlx o *o--; e: deh:)qiiobqof the electric field at a distance of 1.qo;3*omm):dxi fet-m)eb+i bl -o:q h0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distanc9,slw n ou,g3dvku,p 7o j:5qxe of 1.50 m fromkog, p7: 5und,lws 3 jxvq,9uo a 50.0-nC charge?

  A 5.0-C charge is 10 m frollt -r9oda2/uq1hv d -(rtb)o m a small test charge. What is the magnitude of the electric field at the location of the test c-) l2ahot/ 9 qlr-r( ut1oddbvharge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the emrn9. l4gu scf;x1k /tlectric field? c9rkfn/x;t. mgu 1l4s

  A 5.0-C charge is 10 m from a small test charge. What is the maqyd,/)tp66mxkn6-t r3 us kdygnitude of the force experienced by a 1.0 nC charge placed at the locau6 p,ksty km/ qrnd63 -t6yxd)tion of the test charge?

  Two point charges each have a value of 3.0 C ag c)uh(glw4am z0 ,sv)bnjj4- nd are separated by a distance of 4.0 m. What is the electric field at a point midwayvmjn(uzc0 w)sg4-jg ,4 b)lha 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 chmeai* xq 0*4yx3wfol+arge is placed atlxe+43m qyx*iof0wa* the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed cz b )up-3a.vgat 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 joining the two char)apc -u. vbzg3ges is the electric field zero?

  Two point charges of +3.0 mCk: u ok)o-oxloph65*ow 6hb w0 and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude ofo*xo o k6w5wo6lku)0h-hpbo: the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a sppejqw0fs6b.b h;t2w z:15sm quare of side 0.50 m. The last corner is occupi5wpbqj.pts b0:;zs wm2f 6h1 eed by a -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 placed ahvhq5e 97+ y2.k otovtt 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 +2 k.q 95yvh7o thvteomagnitude 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 plaqxb8n4qhv5g lr (ne 51ced in a uniform electric field. What is the magnitude of thh nlg5q54 xqnb(8 ve1ris electric field?

  A particle with a charge of 4.0 mC has ala4 a:o43vove 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 masxltk*26 skfr ,s 0.120 g is placed in an electric field of 6000 N/C pointing downward. What tk2rls, *6xkfcharge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2h))ac juz: p) *a;nj5b6j:ncfymj5df .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 the elec;nda ujn) *:c ja5jc5fhjy: 6f)b)mp ztric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is i/9hboq 3tk5anmn.3km(gf7fthe magnitude of the electric field 5.0 cm from the sphere's su gk a3on 3btfh9imk.f(7nm/5qrface?

  A metal sphere of radius 2.0 cm carries a chaxjl. a( pr-:ywi;5aznk y 58qq26:utj+swgaerge of 3.0 mC. What is the electric field 6.0 cm from the center of the a8(qaz: r:ujpyl56xw+;a5.iqy2t knwsg -ej sphere?