State the law of conservation of electric chargew2ii6 5-m./ ul hmzdbu.

  Is it possible for two negative charges tol za+/ x9gn4 gd4vno+n attract each other?

  Is it possible for a positive and a negative chargqrm(s vl7(5oy e to attract each other?

  A glass rod is rubbed with a piece of.52 w0 5rkjbrn.xuikt/5lap q silk. During the process the glass rod actw52nj rrq kl.5iu0pa.5kbx /quires a positive charge and the silk

  A proton carries a

  The model of the atom show uyiyqck36p.ib9- qx:c:qm0- u(g oqk s a

  A neutral atom always haspzdil+ 8d,;l-b gh8bf

  An atom has more electrons thf 7 4p2pm5nqj.ncroe4+w-roz an protons. The atom is

  Materials in which the electrons are bound very tightly to5klnv9kuj(c1.n u l e2(g v50xreur(q the nuclei are referred to asgr(vxl.j0k(rcvue5n( 21el 9qu un5k

  Materials in which the electrons are bound very loos hr6 4p*v4vceiy7hqc,ely to the nuclei and can move about freely within the material arv4q4*6ceh 7hvp, rycie referred to as

  A negatively charged r8(8 u 2mjv2kf/z1xjyfpqjg26p rl5uwj/2 l ieod is brought near one end of an uncharged metal bar. The end of the metal bar farthest from 2le/8lwf/6 r2pj12(u yf8kgijx5pq j uzm2v jthe charged rod will be charged

  Sphere A carries a net positive charge, and t,*aac: k qozvd2r(*wsphere B is neutral. They are placed near each othera r,twzqv:c * oa(kd*2 on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge aztd 6f6+4puman electroscope positively?

  An originally neutral electroscope is briefr.e)r3psg +e vxjg)2 6jdzl*ply touched with a positively charged glasp)*ejv erxgs6 gl.j2p)3zr+ ds rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positivelyepetpe:tk ):w1j6tv qq,1;fx charged glass rod is held near it. After the glass rod is removed, the eleq :ep ktv ,fexp 6j)1t:tw;q1ectroscope

  A positive object touches a neutral electroscope,+fnk j; jkb91w6zyvi6 and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. vifzjy6 9nj; +kkw 61bWhat happens to the leaves?

  A large negatively charged object is placed on an insulated ta7hi mqa g+2m8p1hc yu.6o7mbf ble. 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 1o 7cy6ih2umqmf.m+pb 8g7ha 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 Coulomb x+w8ff.k0zboqasdj xt2r yn( -v)/y( constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge tb5 tmcx5k e-f+(ia1po zd88dis larger in magnitude than the second charged zo1d pkt+-bamxi8t5f( 85c e.

  Sphere A carries a net charge and sphere B is neutral. They are dys/j.( egb9j placed near each other on an ib g.9d/eys jj(nsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attracq-.t xdv du1y(v 4mls(t each other with a certain force. If the charges on both objects are doubled with no change in separation, the force bet.vts mvd y lx(-d1(qu4ween them

  Two charges are separated by a( z+jpr)q29c f upci)h distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/32fippq cr9z(hj c)u)+, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the 9v/ z-ecbt/ga jp .cd0force between them if one charge is doubled, the other charge is tripled, and the sbt/e-a.c vjp/g z90dceparation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are sepm/h;ga. guxr+arated by a distance of 1.0 m. What happens to t;xhm/u a+.gr ghe magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separatm)yqq;sdz5t) ed by a distance of 1.0 m. What happens to the magnitude of t qdyqm) z;)5sthe force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distanz im*ik / m 5f*m+gt+zt.d:mtpce of 1.0 m. What happens to the size of the force on the proton if the electi/+mi t5mg+p*dftmz :k .z *mtron is moved 0.50 m closer to the proton?

  A point charge of +Q is plcl- l lxgo 0qevu;d+.x71dnr/ aced at 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 positiv+oq0;e vcd/rlu1glln x.7xd- e 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 the center of the square?

  A point charge of +Q is g id2yll j4 a(g9h5se6upx2-m placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the 2 6 -l(9pesid5 gjma4xylghu2 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 the other vertices?

  Which of the following is not cl94c.l cl8/qqfj2a fmgx8l .lo )+ioa vector?

  At twice the distance from ior2ve,,og lfmi9 3-z.qr.i wea6-s98 en lbra point charge, the strength of the electric field

  Is it possible to have a ze n2 j:,sksumkl -3f3bfro electric field value between a negative and positive charge alsk3f f-kmn :s,ublj 23ong the line joining the two charges?

  Is it possible to have a zero electric field valelkphe( (f6 a m*q.mr*ue between two positive charges along the line joining the twoe(ma.6rq h*f l k*pe(m charges?

  Electric field lines near psitive pozcdh +tx wku1 ok4t6.5int charges

  The electric field sh+7 r7uj - wj*ret36ieulqqzq,own

  Can electric field lines intersect in free s n/n8kf ase89x pz3hfa +kk,u+pace?

  A solid block of metal in elec3p a ox rpj-bhp6+9eu*trostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric f+-hpr p j96p3u box*aeield in the block's interior.

  If a solid metal sphere and a hollow megi) g l.bax8 b6z1e+kerjxu82u 6+jvstal sphere of equal diameters are each given the same charv uulz2b6j+g+kr)j8 a e.6ibxs 1 egx8ge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unifor c5c32iwyz*n rm electric field is directed straight upward. What can be said concerning5*c wyz icn2r3 the charge on the block's top surface?

  If a conductor is in electrostatic equr) q5. m*.r,hlkqml xuilibrium near an electric charge

  A positive point charge is enc2d5 ,dthutd sod6: hp+ yomf.2losed in a hollow metallic sphere that is grounded. As compd :fh5o m.ds,6ytp2+dhtod2uared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equili+a yik gc(-qey z/f cnmf8pt7;d-dj/2brium.

State Gauss's law.

  The charge carried by one e rzhn95-tr(66jiv8a kiepis0 lectron 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 n6r6 p2c/qgclp6- n, o ec3dpitet charge of +2.00 mC. How many more protons than electrons does this piece of plastie-6rpng c6qp/p o3 lit2cd 6c,c have?

  What is the charge on 124 qj9bo r1f* ydlh us d7gc5xh9gj8n8 kg of protons?

  An atomic nucleus has a z3llh42ezv)m 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 mC jv5.zl 5o pqejnwjo/r+-+wb:, respectively. What is the magnitude of the electric force bq zwlb:j w-jr5e+n o/+jvp o5.etween them?

  A 1.0-C charge is 15 m from a ;xz*z ncn x8+np:c*cp second charge, and the force between them is 1.0 N. What is the magnitude of the second chargnpz:+zcc*8n x* x p;cne?

  Two 1.0-C charges have a force between them of 1.0 N. e:j vfw gph3q5p+ 3t4wo7b+xpHow far apart are they?

  The force between a dp wsmcz2h(6hmn1li 0 3.s*ce $30 \; mC$ 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 force. If the8 rv juhx*a-l4:cw*a(; /uizwy ddhh3y are moved to a new separation of 8.0 cm, what is the eleajw 4 hryla d3*hd*;i(z:hw/8cv u-uxctric force between them?

  Three identical point charges of 2.0 mC are placed73eo cbafx zs4*8b0 f8lr5ch o 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 tzc48hocf5rx 7*0obl8ef sba 3he electrostatic force which acts on the charge at the origin?

  Three point charges are pc-f05ea*q rwy 3 qzoh(laced on the x-axis. 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 1r* hfq(zyw- oqe05ac 300 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges a(iu 0 io)m6l03v1bu8crddrteo( g7q pre located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; do uplo381iirt00q(dec) 6 g7 uvbm(r 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 istm*sx 2 /;u29soh aljcuab bvwr+6 )9s placed at the center of a square, and a second point charge of -Q is placed al srvx 2hu6m sb99w+;s*)/tjb 2aouac t 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC ipmwmka 61r+b :s at (0, 0). What is the magnitude of the net force on the 5.0 nC char a1pwm 6+rbm:kge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.1w ( 1u bebizek12ju(x6/m mgl/0 m); Q3 = 5.0 nC is at (0, 0). What is the direction of themuizj6(me ( w g21kbe/xl1bu / net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral thw;m wd5/ w:pqzk /cp1riangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the chawpm //wkzqw;5ch1p : drges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what poi(ayi6w4+iko2 er9*ujcpp y 6w)tq k.pnt, on a line between the two charges, would it be possible to place a wp4aipp62( + u9.k cwyr *6ei ky)qjotcharge 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 dejtbg.2:l5 z m. Where on the x-axis can a third charge be placed so the net force on it is zerd 5t2:ebjzg.lo?

  Charge +2q is placed at the orxbjk)((sykeg i15hs ;igin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed xs;kjy5h)sieb g1((kso that the force on it is zero?

  A copper penny has a mass of 3.0 2)iy/ mx t41sb 0pwqtc rn2 ne/iig9y1g. 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 forcw k(dn kbj-d9o/rg2 +;b33pn7 vk,sw .whmaeqe of gravity by the attraction of a fixed proton some distance above it. How far above theg anwr;+p7nvb9 ,ew/d sjqbodk k 3(kwm23h.- electron is the proton?

  Two 0.20-g metal sphqnfscw s *e,v*awfyq4. 5s 0t/eres are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until *t cwq*q y /.avnf0s,s wef45sthe angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a chargm; /k jzr 8bmnfnf8q8 5e*d.roe of +40e. What is the magnitude of the electric field at a distance zmk fdbo*8;qn.r8m e5j / rf8nof 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fiel9imlwac24n m(e8: ahw1rygd : d at a distance of 1.50 m from a 50.0-nC chh2:dy na 9 (4wgl8ma:wie1m rcarge?

  A 5.0-C charge is 10 m from a small test charge. Wg+ru +d:bo*xi hat is the magnitude of the electric field at db: +ugor i*+xthe location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is th o27 yc/tgn tpghzzc)k;90q dpo(/ z(djjz/ j/e direction of the electric field? p0zyo9c(z/gz g(/j;2o/c jhkdn 7dttz/ qp)j

  A 5.0-C charge is 10 m from a smalf:javs sh.1yss- 1r d:l test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of tys:1s- shavd1fs . :rjhe test charge?

  Two point charges each have a vaqd*isv) n;o eqv4/ ef8rj sx.8lue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a poinvr * 8n 48qifv qexejo;./ss)dt 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 chk6jof- d9x2u darge is placed at the 50 cm mark. What is the electric field at the 30 cm marf kdx6u2 oj9-dk?

  A 5.0-mC charge is pnzvkq2w2 kv zj3* e:;klaced 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 joining the two charges is the electric fi;2 wvq jzv k23:zke*nkeld zero?

  Two point charges of ; *o.fatro s,a+3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric fielo;o sta.,rfa* d at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squara s; cabx)pu l0 i6;rt;*vpcx/e of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fie;;6ut c/x0aplcp*)rx i v;bsald at the center of the square.

  Consider a square which is 1.0 m on a sikw0p1 b av49x)q,nvpz de. 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). What is the magapb 4v0xnvwqk 1),p9 znitude 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 pdcjg ya/t,or1m8 g/6d:vll/k laced in a uniform electric field. What i lv6g r:d///tc, l1may dkjo8gs the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of qy i5x568k iem$5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g isds 2a,h6tqpv) 7wrr)b placed in an electric field of 6000 N/C pointing downward. What charge must be placed on thpv 7qrr dw)2baths),6 e ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed ;ueh28hnrog73 1)lii1 k.l hupj-tds inside a uniform electric field, and is suspended agaid l;-g8.e h3uslnir2uohj) h tki1 71pnst 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 the kst)(lx*ph)jmagnitude of the electric field 5.0 cm pjk)* sl hxt()from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whatp;br +*al( -l3 aij1bp vfvac+ is the electric field 6.0 cm frp+ i;l+*(jr lavafav 1c3pbb -om the center of the sphere?