State the law of conservation of electric charge.wovi0(d 1vqmt 2s/l,)v tlje*

  Is it possible for two negative charges to atv,e.n x25m+ re ,tp ux4hwvw5ztract each other?

  Is it possible for a positive and a negative chaorz7dg7 (( odt x/il*vrge to attract each other?

  A glass rod is rubbed with a piece of silk. 0wlyy zhs 5.qrsoi-r; s0 )w1fDuring the process the glass rod acquires a positive charge and wz wq i-;o) ss.0 yrslr1fy0h5the silk

  A proton carries a

  The model of the atom show)zsv 8ey:2a dt(xj3 v2sf5;boyn91 ey udpps: s a

  A neutral atom always hailbiaed/pej 0v 6bn:j-a2+t 4 s

  An atom has more electrons riv .;8 8sy-lgajll;j than protons. The atom is

  Materials in which the electrons are bound very tigkskubr,o071 . )xf5eiso6/lcoucj/ fhtly to the nuclei are referred to o5cul)sxc ofb. 1f/s/oikue 67j,k0ras

  Materials in which the electrgufze0 c8u 1nt98mn v2ons are bound very loosely to the nuclei and can move about freely within thevz 09g cnft2m81 euun8 material are referred to as

  A negatively charged rod is brought near oxk 1.zg3a)ro0 n,x3db ni 2jnpne end of an uncharged metal bar. The end of thzb3x2dr pn0k)nnx,i1ja.o g 3e metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphers)6v n *r(dm5 hfemn5oe B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire thafmomn)6r *5h( n vdse5t is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positin0*);. ku( fqwqq u5zrh;dcosvely?

  An originally neutral electroscope p(/ ypwtk 2bc7h xk13ris briefly touched with a positively charged glass r/rpckb7yth(2 3 p1wkx od. The electroscope

  An originally neutral electroscope is grounded briefly while a positively char n zhq+ex zb3wwj,(05rged g,bqjwxzz+r3 h5e nw(0lass rod is held near it. After the glass rod is removed, the electroscope

  A positive object togscus b61( 6rlmdzq)5 uches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. (d rzm6)5glqu16 cb ss What happens to the leaves?

  A large negatively char.f3kyw7p f mw;fo )v,dged object 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,;fyofwd)w3fvkp7 .m 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 Couk5(k u ex.pkh 5:u1pnmlomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d.w em065bft de4 rroo;z2/rt f( The first charge is larger in magnitude th4;fbt zr50f2twreor/e6(om d an the second charge.

  Sphere A carries a net charge and sphere B 3+qlxb qn06iyeu5 (fbis neutral. They are placed near each other on an insulated table. Which +6qeu3lbx (5 bifnyq0 statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain h9vjvao0 +d 9pforce. If the charges on both objects are doubled with no change in separation,9 a9vhpjv+ 0do the force between them

  Two charges are separated by a distance d and exert mutual attractivim4a xxtkk 35sunv,vj0*o*9 be forces of F on each othe59sv43*,mkk b 0nijt*xx ov uar. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the zt;s+7k)t8qu k(n 9k ysj/ bbxforce between them if one charge is doubled, the other charges(k7t;n+/8x )b bq t9yjzskku 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 a f3;ka 8xe wz;mek.7jt6-dyj are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electro;7xy36aamw; -e 8d .zkt fejjkn is placed next to the first electron?

  An electron and a protondreq3gj*(nm5 5ko.l-xt9dj n are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first eq( kl5d j mgn5tredj-x.9n*o 3lectron if a second electron is placed next to the proton?

  An electron and a proton 9r m qq+wgn+ii 5xdw+z (0,y-praet)xare separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closernxwtez,yr(agm50 +9xw q++piq di-r) to the proton?

  A point charge of +Q is placed at the center of a square. When a second poincpb;)gqsc1t8 *c,bj(pvwzwk 7w* afgc 0+*gs t 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 the magnitude of the net electrostatic force acting on the positive charge at t7)a cpz*+vpssk*c bc8g0wq(t jg;f1w g cwb, *he center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangzdsoh72 ztxxy3n (j4 1le. When a second charge of +Q is placed at onen o1 jsty74h3dxzx z(2 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 the other vertices?

  Which of the following is not a vectormo2 pf 1n. 5i;u.if 1 qnnqj;rqad2x2w?

  At twice the distance from a point charge, the strength of the fvrs hb ,vv* cx-+ycr +/sqf(4electric field

  Is it possible to have a zero electric field 4td q.xi,dg u5fn 603it+ba5ojmh/au value between a negative and positive charge along the line .u5 um qg34/,a dthotx6+aiibn5d0jf joining the two charges?

  Is it possible to have a zero electric field value between two positive7a.vk yt;p 5qaoeb/+5h qtt 0k charges along the l0kp7aoq;/.q h5t5ttkayb +e vine joining the two charges?

  Electric field lines4l4 )xbm8mfmwu85-y .v otru a near psitive point charges

  The electric field shoo ) fkq(;qq-pbc /. fu.6tnmjzwn

  Can electric field lines intersect in free spa2j1t8 g g4 sjo+dkput0ce?

  A solid block of metal in electrostatic equilibrium is ubskerfc9yxg:/m4 ( /oo f/k:j9kx6j placed in a uniform electric field. Give a statement concerning the electryuck:f9:o s/g/fxbr(6 x4 j 9eko/jm kic field in the block's interior.

  If a solid metal sphere and a hollow metal sphere oqm igq9pn9t+ 1c,v8 upf equal diameters are each given the same charge,,8 +mpticv91gu q pqn9 the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in :si 9cfs96m gva region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surface? 6s ficmvs9:9g

  If a conductor is in electrostatic equilibrium nea.l z72xltl xcx1l ;tx2r an electric charge

  A positive point charge is enclosed in a hollow metallic syrj*x:aajs9 lgx93k9 phere that is grounded. As compared to the case without the hollow sphere, the electri9xsjlr9 y*9a kj3: gxac field at a point directly above the hollow sphere has

State three properties of conductors rt/7vdg, zudpc be43 o4w v01cin static equilibrium.

State Gauss's law.

  The charge carried by one fxh o3ajf1j)c0ie+gdb* ,va7 electron 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 many more proton -g( vxufhh:d7s than electrons does this piecehv7u hd g(:fx- of plastic have?

  What is the charge on 1)d, 6nf fh:c14 sdswsd kg of protons?

  An atomic nucleus has a char4qu v2zmi4u/bge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, se1m:r ukkcj0s )parated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What)m :k0k c1jsur is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a secft ebnl2n;d 2ls-w5y0y 44z4saqg,i x ond charge, and the force between them is 1.0 N. W5;e n-dixwaqz0 yt 4ynf 4 s4,2g2lsblhat is the magnitude of the second charge?

  Two 1.0-C charges have ju4dr7/apgfww k02 :t3q)t o ba force between them of 1.0 N. How far apart are they?

  The force between a w f,f;vt8.hqa01p t;iu +tlqz$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, ini(p* uktqfj pq3j)kd7qjc wppt : 8x:97tially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the(w tpqp::kfcpjt )jq8 7d*u7q9kp3xj electric force between them?

  Three identical point charges of 2.0 mC are placfq1c x43fy;oned 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 at c yxqo14ff n3;the origin?

  Three point charges are placed on the x-axis. A charge of +2;34 wsxni4pm n.0 mC is placed at the orignwp3x44; smni in, -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 which acts on the charge at the origin?

  Three point charges are located at the following posi k;/7eyl at;iwb.t( u9yk nfq2tions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -57u l;e ntt 9ik.b(;ywqk 2fya/.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 -4 ntf9ny:gm r fbh;c;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 otmf:4g -;rcbnnhf ;9yf 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 a xfrjd-i7 qahv4 2g74zt (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). W7 xvda-g zh4j rq27f4ihat 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 nCvl/( /vn) jrra is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net ) an/jvr/ r(lvforce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertice1p, bo.opsdzh+2bzda-9t6fp1 v r pk/ s of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic fo/btzd9hv61bf. pp+ sr1,pz2oaop kd -rce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sepa0 .* jrydh8nc,o ok(gqrated 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 elehgjk0n dcyo.*qr(8 o ,ctrostatic force acting on it would be zero?

  A +3.0-C charge is atl7y2pagu)6b 4 in vbm) the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zeronl74) p ubab6m igvy)2?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where can;k1lbb+ g+rmb a third positive charge +++;ml1b bgb krq be placed so that the force on it is zero?

  A copper penny has a mass of:o7)k+x9wx)9 u 5 idukqvqwy g 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 gra,q,79y/;bqm(pas o1wh0 xydlf w/nsb vity by the attraction of a fixed proton some distance above it. How far above the electron is the pro;ql /b /1p ,wndsbw yhsyq,0a9x m(o7fton?

  Two 0.20-g metal spheres are hung from a common point fbqt oa( :xwy,9na+g+by nonconducting threads whic gx +9qyon:awta b+,f(h 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 lvx 8q 7.;-*nxo rywjxmagnitude of the electric field at a distancwq;x*yxx 7volr-8 n.j e of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric 0 un diefcfgn2:i - -)/z*:tru na/mxpfield at a distance of 1.50 m f-p2fx/nng )z c i::ramn0dfeu/ it*u- rom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the nqr3)w8fenbzq6x m p8q.zea8sv4p, 7 magnitude of the electric field at the locationbz v8 f,)sezqpq 6n4wxr8mn73 eq .pa8 of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direkbo(b2,tr .xivg-.kj 3be+ p dction of the electri -krb,d(j.bgvpxokb2te.i3 + c field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnit7g1ok6x d g0bgude of the force experienced by a 1.0 nC charge placed at the location of the test char g6o7x1kg0gd bge?

  Two point charges each have a value of 3.0 C and are separated by a distannsj: ad(x 5,kqce of 4.0 m. What is jdn :xqs ak5(,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 stickqti l g*r8*n :oacmj4- and a -4.0 mC charge is placed at the 50 cm mark. What is the * n -jlqc4m*gro8:ita electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a me v lu7;3ejwio-ter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point -vui3j e;7l owon a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are place-o)n,lv.qpw : c:gyuud at x = 0 and x = 0.20 m. What is the magnitude of the .v: n cguoy q-)u:w,lpelectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. T,gki 2u+wbjpa0c* nl2g)kn /q he last corneg ,nqak2glj+ikp2wn b/0c *u )r is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square whice as2:resi nbi i7q*,ss u125yh is 1.0 m on a side. 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 sb1s: si7r52ae*ie2qu,yns imC 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 when it 6oa xzz0y9w2 uo :s,itc4 sgw0is placed in a uniform electric4yww,t z0sgo20 u6aso :9cxzi field. What is the magnitude of this electric field?

  A particle with a charge o73olf hcmqtw. mpd 8jn39k(e* f 4.0 mC has 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 gav0xwyhx:8,e is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it tw0 x,:eha vy8xo be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The balld/1 z .zu k*tpsp5n:ef is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the elecd1tu :p.sfzn p*/5e zktric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What pz.1:ozk mv+g is the magnitude of the electric field 5.0 cm from the sp .mk g1vz:ozp+here's surface?

  A metal sphere of radius 2.0 cm carries ahf5/b1r r j4jp charge of 3.0 mC. What is the electric field 6.0 cm fro1j 5h b/j4frprm the center of the sphere?