State the law of conservation of electru4i:/,acnw0xthiayag q3 29hic charge.

  Is it possible for two negativdfc05py 2wl( xvo)*x te charges to attract each other?

  Is it possible for a positivnziyztxs2reb5, v886e and a negative charge to attract each other?

  A glass rod is rubbed with a piece o 8 2h4ut p lxh1g3tsph0.pni6of silk. During the process the glass rod acquires a positive charge appn pi6 21tlhx3ot08gs uhh4.nd the silk

  A proton carries a

  The model of the atom sholfy)dwq 5; zjpfyg2.) ws a

  A neutral atom always hz(k0kp. ealc-as

  An atom has more elect*51is9 m7gc w0f *7org,dmhxmtpc ht7rons than protons. The atom is

  Materials in which the electrons d.-w;qp2izav are bound very tightly to the nuclei are referre;pv2-.zw diqad to as

  Materials in which the electronsj1h,u 68rjqki1spe t2 are bound very loosely to the nuclei and can move about freely within the material as8qjt2r116k eipjh, ure referred to as

  A negatively charged rod is broug.qh:ui c 4u -qgor1z5eht near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rohro .4zqeq:-i1 ug 5ucd will be charged

  Sphere A carries a net positive charge, and sphere B il /xw1re*u-rv-o yv as,m+;k gs neutral. They are placed near each other on an insulated table. Sphere B is brieeu voy1r+gv-/m -kaxrsl;,w*fly touched with a wire that is grounded. Which statement is correct?

  How can a negatively 454t-714jina*sq d7up asjqfa uu e1scharged rod charge an electroscope positively?

  An originally neutral elecjedv l v7h7)c*troscope is briefly touched with a positively charged glass rod. The l dv)7cjv7e h*electroscope

  An originally neutral erdcg emb*t l16zlq, ;8lectroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed l reg;18,zqb 6dlmtc*, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. 07gl,lahx o6 k/o f6kl Then a negative object is brought near the electroscope, but does not touch it. What happens to k6/l6alo k xofl,0 g7hthe leaves?

  A large negatively charged object is placed ozm +a(/xoo(wun 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 noto(x (/mz owua+ 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 Coulomb constant )dofe0uvk* 8y $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first u ;j1ri0tr 9d2ur2*gnvow;kkcharge is larger in magnitude vu2ikudgrwr;tn*r k1 2jo;09 than the second charge.

  Sphere A carries a net charge and sphere B is nerqm9k ikf k.k9y1 b.v+8osm(v utral. They are placed near each other on an insulated table. Which statement best9yk b8.1 k(q9+ .sfvmmrv okik describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges on t2g 0wnlh xg brawtw;- +71g.zboth objects are r;+.1h txgg-ngbw wt 7w a2lz0doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces uy/ b7hx:0zct of F on each other. If the charges are separated by a distan0 hcut/ 7:xybzce of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forpjlz )a4/.u vhce F. What happens to the force betwee4vhp j)/.ula zn 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 force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. sbkgnfup41q8x i)(b+ What happens to the magnitude of the force on the protb+4b (xi nk8 )sgq1fupon if a second electron is placed next to the first electron?

  An electron and a proton are separated by a dista7uef8 fp cns-7nce of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is plac7fcep-f8n7 u sed next to the proton?

  An electron and a proton a:geic+ 6pt;wc9h/dt g re separated by a distance of 1.0 m. What happens to the size of the force on thepetg6i /cw+ :gc;9thd 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. Wh)/okb l-spac1la/m5o3, yr ,yuy y9ooen a second point charge of -Q is placed at one of the p,o) yyu3o m/ro l -k9,y1bay5s /alcosquare'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 the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral rcz 8 /t*r8pjde8gbw7triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic z8grd jr c/ 87*tep8bwforce 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 uv6j4mvm5 5tw a vector?

  At twice the distance from a point charge, the strength -nfnzx nkrv 3,+m25+ ac yb:chof the electric field

  Is it possible to have a zero electrv ( 3yeam11x 0i7 d6-xsnnrkuqic field value between a negative and positive charge along the line jmn r x0(1uxkyd3ievanq6 7s1-oining the two charges?

  Is it possible to have a zero electric field value between two positive i s0kkqxvjaiv*s,-.- su- ,zicharges a.k-k-sv0 j avsxzi*, iuis-,qlong the line joining the two charges?

  Electric field lines near psitiveqj;:j h. o;m4k(yz4 bm/clvfn point charges

  The electric field showg2cf1( ,18xvd7kuip phx.)f * rnvzykn

  Can electric field lines intefy 9:s4.k 9avapr, mukrsect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a / tncqu 1)y0 us4tm:uuuniform electric field. Give a statement concerning cyu0utn :qs )tm/u14u the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sk- *e8-*dnrc b8*xpzsq7w6.m bf atqkphere of equal diameters are each given the same charge, the enq.* -*kkwxfz7sr-b ectq8 ap*m6b8d lectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a reg +ze ptr/v*tvzqc63 m t1pu0n/2ews,oion where a uniform electpncqevu 0 /6* o+wr,e/tv1mtp2z3ztsric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in elecnbj0a6ff( q1 jtrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metalliff zlw(vf/q*d8f1.x90h5( g nrcs8cs(axf vuc sphere that is grounded. As compared to the case f* f0(x(fzvhd1nclwa /vs58 g9fu.(cf srx 8qwithout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equi;cx ct8gg6;kl)0cipi3 q.r mmlibrium.

State Gauss's law.

  The charge carried by one electro4itb.xpx2ufo92p kwo. ms :xdy7e 9 3sn 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 p8yemzlb: nx ,7 e7et7frotons than electrons does this piece of plastic habx e,n87 l7ezfe7ym :tve?

  What is the charge on 1 kg hbs q/ .d*rrgdq-g6m 4ipub77 of protons?

  An atomic nucleus has a 0kt-d zdy5ju/if35;-o0ewbj l eb m.lcharge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatege:w9go gb: x+5mobb0d by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force b0g:wo: 95g+oxmb bgebetween them?

  A 1.0-C charge is 15 m from a second charge, and the force betweenrym8o 2n)zi.x:so;jv pwrd 46 them is 1.0 N. What is the magnitude of the second cha:o4s 6 w8z2in o mjxy;r.prv)drge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are thv ,ecd1saud/(n zdw7huds s2p;v a00(ey?

  The force between a 1 p r1;0snd/8ba xsfzr$30 \; mC$ 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 forc;r5lr54 u; ffczde4n he. If they are moc4;fenf5h4 r; d r5zulved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first zg2q;.gecl gczk s.81charge 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 q2ek g..8zczslcg ;g1force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is b3g:ypxzhyv +j 5uo*( placed at the o vhp3bj:(gu * +5yyoxzrigin, -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 aote--dm*7 nzr4)fa bhf jsv9;re located at the following positions: Q1 = 2.00 mC at x = 1.00 m;-4)fn ao *7mhd9 be-zjtfvrs; 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?

  A point charge of +Q is placed at the center of a square, and a seco7 ; ,2emxaxvjwnd 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 xvwa,; jem 7x2acts 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); ijq 5 5qubhvhel;u;-n(*4b gsQ2 = -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 ohsvunbj5;q h (4bue-g *li;5qn the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30efjytq:v-)m* zc7ye4 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). :t ceemq)y - 4jvz*7fy 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 vertices420e k s egbeple2pzb68ky l36 of an equilateral triangle wpke 3bgz2ey4 ee p8l2660s bklhich measures 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 +bg. o sel0nh..o4l w,n4Q, which are separated by 3.0 m. At what point, on a line between the two c. 4s.w.b goho nn,ll0eharges, would it be possible to place 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 = 4.0 m. Whewz8u; m1vjut i2c3la)re on the x-axis can a third charge be placed so the 2jcum1 v )lt3zauiw8;net force on it is zero?

  Charge +2q is placed at the origin and ch4r rix6v239z ld2aw fxarge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force 29rdrzv4l6i fxw a32xon it is zero?

  A copper penny has a masj* gj6cv(xx w-wu.-*ys, oo.2fmi nvrs of 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 2anc ie5mh.x1nfv r *7x. .pskgravity by the attraction of a fixed proton some distance above it.rm5vcxk xe1nh.f i p7a2.ns*. How far above the electron is the proton?

  Two 0.20-g metal spheres are hunulzth n;em+ j2wp5 q83g from a common point by nonconducting threads which are 30 cme u5 p+;tw ln8m32zhjq 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 wad k674pmi2w4;zi;ivt p wwze / k2w4magnitude of the electric field at a distance of 1.4 ;i4 4/zwkdwptmp2wk;iv7a6 we2zw i0 m from the nucleus?

  What are the magnitude and direction of the electric x(:re 6 y +eolh)zrmoat+1wdtjg8)t1 field at a distance of 1.50 m fret +r+ywg618ro: ea)j x)totdlzh(m 1om a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magniy/e 0t :lf+jjjhazf4) tude of the electric field at the location of :zjfh /f jya+et04jl)the test charge?

  A 5.0-C charge is 10 m from a small tewt; oc3)hks/ywy tn qh+h/72zst charge. What is the direction of the eley3woq ws)/hhty2kc/;+zhnt 7 ctric field?

  A 5.0-C charge is 10 m from a small test chjt2bwvh-esxp ethy4 il -4 2;*arge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of te -yv4l4pit j2hbx; s-*ewh2the test charge?

  Two point charges each have a value of 3e ob 5*a2nxv)odgs+u54 pdu w/.0 C and are separated by a distance of 4.0 m. u *uog4/nb2w)d apdvex 55s+o What is 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 p -- y+cp:b)l2nc.5un5rxx9ab x0qcgq,fazk charge is pzc.9uq:+a f5xpg)-0n q pa2c xyr5 n kcxbb-l,laced at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 c3b .vmvy p7-pom 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.omp- 7v bypv3 the electric field zero?

  Two point charges of +n,8.k lt y/3/b3sqkjn74)q acujr cqc3.0 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 u /y.3r/)lsq8 j3,t7cn kaq4cnjbckqbetween them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. 7nqdh9 9 a)xt 9jae*wqbsg, 7yThe last corner is occa,en9 q7q7bady x99t gw *j)hsupied 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 sy/f-(6koa+i,*e euc n z iwta6ide. 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 t *a (,nawek+-ioiyfe6cu6z/.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 when it is placq8t/f znnui+rq/ g6dtu.29 d jed in a uniform electric field. What is the magnitude of this d/gu 2q+qn9.tjt8d zf/u inr6electric field?

  A particle with a charge of :tm;;q2xuaz8a t l1ge 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 g is placed in an electric field of 60,q sd y.:zc5n*3)tiz 8mriflm00 N/C pointing downward. What charge must be placed on the bt3d5 )cimf lsy izn* z8,r.mq:all for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The7h )2/ ogoxb 7clntai1 ball is placed inside a uniform elegh7x71 t onl/o)bi2ca ctric 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 carr17,someshkmi7w9/ hzv bjf0 u5 z+7l gies a charge of +2.0 mC. What is the magnitude of the elecgo b71 zjs7/h vl,+ sm75fizwm0ku e9htric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge1w*.m3c vdv(v kx:f ofyd,1uy of 3.0 mC. What is the electric field 6.0 cm from the center of wv*myfv.fc, :k(3xy ud1 dov1 the sphere?