State the law of conservation of electric ,4nlc: m a 6 pvqy.g3xlpgsd3+3ltix7charge.

  Is it possible for two negativ+mebxgnp ih8c3qkc-(,5 e0aa e charges to attract each other?

  Is it possible for a positive and a negativsjhk8sxu9fxps- ;bh 61cbx* ,e charge to attract each other?

  A glass rod is rubbed withocmwjz.m j-g e4l2tm a30z .9o a piece of silk. During the process the glass rod ac 42wm-.0oogtm e ac.zz3j9jlm quires a positive charge and the silk

  A proton carries a

  The model of the atom shows k *q ttxu-1sv)ggj;:fxz h x2z tw7;u.a

  A neutral atom always ha;rru:0m 2 )z7 qnqywcgs

  An atom has more electrozq 5g wh )qn,u(pp6gg;ns than protons. The atom is

  Materials in which t/jaeq ;+pbhf .b8 fdn9he electrons are bound very tightly to the nuclei are referred to +qh f9ndbab ep; j8./fas

  Materials in which the electrons are p)-a x.z2,qetbn trx:hfd04hvy; w j1bound very loosely to the nuclei and can move about freely within the material ar-qp,4b n.1f; tt:hhwaex) 2xzvr 0djye referred to as

  A negatively charged rod is brought np9/irk 40j)n hf9yrqn ear one end of an uncharged metal bar. The end of the metal bar far9p 4)yqn0jhn i9r/kf rthest from the charged rod will be charged

  Sphere A carries a net positive charge, a x /ah0zxr1vj we(u2f2nd sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is fu r z12 jha0ex(2x/vwgrounded. Which statement is correct?

  How can a negatively charged rod charge au ,r::ybl rx2zn electroscope positively?

  An originally neutral electroscope is briefly touched with a px:-c76mut0a fyu8nog 7 uctg, ositively charged g8u:gog tc uc6,a-nmuf y7 70xtlass rod. The electroscope

  An originally neutral electroscop;2smq4a, kp6qq7c al pe is grounded briefly while a positively charged glass rod is held nepa sca lkqm6q qp,74;2ar it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the l/pfr;/ .t o6royo h,noeaves separate. Then a n;/ fpt/o ,o6ynho .rroegative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object id*h24x +bk svws 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 f wxd+s k2hbv4*irst 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 ofo f .e(a scv,f,,yg0oy the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge i/ y9yd: qhfu(is larger in magnitude than /hyqdf iy(u:9 the second charge.

  Sphere A carries a net charge and sphere Bvybf0h9.jued 7sw+y y5 h 35wp is neutral. They are placed near each other on an insulated table. Which 5ye ph93vbfd0jwyhuwy+5s .7statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges ohguywo 0v(y0e0-9ehdn both objects are doubled with no chan(gv00y-h9ou 0 edwhye ge in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcesfr 4:ku,hk )xtz)xo5 t of F on each other. If the charges are separated by )fkxrx hz: ok4,t u)t5a distance of d/3, what are the new mutual forces?

  Two charged objects attr8e8x78zborpl l36cq f act each other with a force 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 73lfxecb 68plo 8zq 8rits original value? The force is now equal to

  An electron and a proton are separated by a diyj,*1: joxd0wf jtat+3o/bdl stance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next afdl,ydox / j*t:3j0w1tjo+b to the first electron?

  An electron and a proton are separated by a distance of 1.5wq,y(i*k t0k,hphq f 0 m. What happens to the magny0iktkq hw* p5q,hf,(itude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by gca9wuw k-sb w25z, wh m5+at(a distance of 1.0 m. What happens to tz2,tb9h wwsc -w5+a(k 5uagmwhe size of the force 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 seco0o* qro* y5h hv.exa.hnd point charge of -Q is placed at one of the square's .*y a5hq.oh* e xro0hvcorners, 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 centroidznc i bnpf82a hb;5l91 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 the otheap8ncz21blif h5b ; n9r vertices?

  Which of the following is not a55t1shp- ah6s9 v t +bwgwby2b vector?

  At twice the distance from a point charge, tg,o tj3u;;mk k pt7++qklp -pjf/4lgruz z)k5he strength of the electric field

  Is it possible to have hs.y t):33ftjxwc*nc +k ma/ ;1nsosna zero electric field value between a negative and positive charge along ajn.t o+3msnxyc/hw ; cks3)sf1:t *n the line joining the two charges?

  Is it possible to have a zero electric field value betwehnz3ivs4 r jb nw)+6,3syfd/wen two positive charges along the line joi6wvr/4nbs3,is y 3f dj +)nwzhning the two charges?

  Electric field lines near psitivfvge 3)p4 ;uz ft6crnx*w 2cj-e point charges

  The electric field sm /s;n mklk*m;hown

  Can electric field lines in ctl31 n857 *wv kkvlw-uua2outersect in free space?

  A solid block of metal in electrostatic equilibrium is placed ic5l fqxm-,g xvk t97-nn a uniform electric field. Give a statement concerning the elecxqmlk-f9, n- x7gc5t vtric field in the block's interior.

  If a solid metal sphe /sia23q h0qzure and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the qi /3q2 shzau0surface is

  A cubic block of aluminum rests on ay(,c/ fntyjs/x-g,qzhbj*, d wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top , *,h(g/xdsjyc q-,j fbtn/zysurface?

  If a conductor is in electrostatic equilibrium near an electric charge ; nxqyok(ko-+

  A positive point charge is enclosed injapuz9 66ct+x a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, 6 p9jx+t6zcau the electric field at a point directly above the hollow sphere has

State three properties of conductors in stat itemj6ff0.19cqgxe( zq4iq 0ic equilibrium.

State Gauss's law.

  The charge carried by one electron7njz 8(9ii w89z.k6hxxbs7j; qorih v 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 protons th) 6 j,pwvhcej +jehqdd.((bf2an electrons hh( e+ ejjv 2f6.cbjwpd, ()dqdoes this piece of plastic have?

  What is the charge on 1 3 n, ew/ms4doxv/jnb/gf*mp: kg of protons?

  An atomic nucleus has ofin rdp8 8z2s ris8+sj0 5r 1y x,(qqfqcm*j*a 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 vam7-56(hpdkfc- .ob 8dds u68 ymp ajvilues of 2.0 and -4.0 mC, respectively. What ij vdb-up6 m7k5d fhs6ip8a(.y-c odm8s the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and./yhed y v m)klq6h8t) the force between them is 1.0 N. What is the magnitude of the second chah/8d.el)h qky tvy6) mrge?

  Two 1.0-C charges have dl, hg +goj(m*+ a1jboa force between them of 1.0 N. How far apart are they?

  The force between a bz+ft(,*9 pusv7k zycn 2*x( tjh awo5$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience .8-+( wau,g 5fachwsfud 5red a 1.0-N force. If they are moved to a n5 8-c5 ugh+ dwwfraf( s,.eudaew 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-axihqatpnj d s4e4p+5zdeli) b31( y,t5 vs. The first charge i n 3ld+yipt dhe,bj(v z4qt41e5sa)5ps 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 the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed ac /2lv1tw0 5wgpxgu .zt the origin, -2.0 m C tz5xg wv/cw0ptul2 g.1o 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 qsh4f.t(vt ,.:a prrpjgd33zg cz.1ithe following positions: Q1 = 2.00 mC at x = 1.00 3.4hqt prgcif pz.gzat: (. ,1 sj3vdrm; 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 squareutn uh uzko+p 51e--+z, and a second point charge of -Q is placed at the upper-left corner -oznh1uuuk z5et-+p+. 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 m9 .l*opm+e z/2y; ,znlivhmj4p3q de v); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force onlel q;jvp42+/z9o .p vin,h dzmm*3ye the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 1m l i )dzup8e fe g(a(g27*/x9oviz7aefi0dinC is at (0, 0). What is the direction of the net force on the 5.0 nC z) xea 1pie7i7 imu(f/ 9give* 8zdd(ao02lfgcharge?

  Three identical charges of 3.0 mC are placed at the vertices of an e0zrjb) 8dv 6xdquilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of thedj z6b8xr)vd 0 charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. qc ,cb;ts2mtqv8gk(+vf*r1 s At what point, on a line between the two charges, would it be poskcstf q brq2(*+;,stv v18gmcsible 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. p;045j.kjzkkc jtrt/ ; hnt 7jWhere on the x-axis can a third charge be placed so the net force on it is zero57; crktj/ jz;hjn4t0 .kkjtp ?

  Charge +2q is placed at theju6lg8h s5ew4 origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that gjle 54s w8u6hthe force on it is zero?

  A copper penny has a mass of 3.0f*)/(mzt9llidme 6 ab 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 fory -m7,lk4zpr)wr ax9vce of gravity by the attraction of a fixed proton some distance above it. How far above tk w-y,mr)pr v97zx4lahe electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting tmtt0-,q9+ zf/st/qj krq* rwkhreads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart untilqm/9 -zqw ,f+/rtt*0 jt ksrqk the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge osfec.4k*h2 p y dgcz8-cfs(j +f +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleusc(eyjz +cc 28p sf fgs*k.4h-d?

  What are the magnitude and direction of the electric field at a dis+ 18t.hlnvdo2a7dup2np b i p,tance of 1.50 m from a 50.0-nC l7nu,2d adpt.n81pobp+h 2i vcharge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the -iosqr 1vcz ;do 684nvelectric fiz v-1src; qiv4do on86eld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dir owbzy.ru ka7*p1 dt/dkm)47mection of the electric fi. m*ka1kzyw7t7 bpm/4 drdo)ueld?

  A 5.0-C charge is 10 m from a small test ch ;-dbgje:j7m ,me2vp harge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charghjvmme ejbdp :;-27g,e?

  Two point charges each have a value of 3.0 C and are separated by a distancep:-inyb f-0yo of 4.0 m. What is the elec:-on-b0ifyy p tric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark hu(sl,klg jx. z/kkl s2y+i. 9:bnk:wof a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What isgllk( h. sijn:9 u,.k2wy/+zls bx:kk the electric field at the 30 cm mark?

  A 5.0-mC charge is pla;n) ww+i f kiw;gse9)r wh.;ijced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. fwr;ews)ih;i;.w 9wkg ni)+j At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. n p3:syf0:c:.z) x cjoj/ 5sm-xprntxWhat is the magnitude of the electric field at the point midxfx :r:nj:.0 jmco-sy5)xspt/c 3zp nway between them?

  Three 3.0 mC charges are at the three corners of a square of siw* fdxbo85d7wq6 k ywmv3kq1,de 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center oxmbk7 fdvy1kq3 ,o5 w*6qw8wd f the square.

  Consider a square which is 1.0 m on a side.ayh ,o;/wh3z.)i ih)bvhtazsf-:3cq Charges are placed at the corners of the square as follows: +4.czwt:izahhh/i3- o v fq ab.h);) 3y,s0 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 magnitude of the electric field at the square's center?

  A force of 10 N acts on a chak ay1mf*9 jvg71f bne;p rs*v7 sg(v/zrge of 5.0 mC when it is placed in a uniform electric field.7vbea p z1(9ff kny7s/*grm1vs;v j*g What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a massl(9a0hufs q yqi22 nlb ,m-f;l of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of r1 dm xd78qk x4 /qz1bdrz 70mcgha5*rmass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must b1xad7m m0/45gdq x 1d8r br *hqczr7zke placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nCq*u 8eiusc ,9n. 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 n*eci9qsu, 8u electric field?

  A metal sphere of radius 10 cm carries a charge ojdxpx6z(b- / /uco hr*f +2.0 mC. What is the magnitude of the electric field 5.0 cm( h pdrx-jc*uob /zx6/ from the sphere's surface?

  A metal sphere of radx5 +nzzrs2i:vius 2.0 cm carries a charge of 3.0 mC. What is the electric field +xrzz5: 2nv si6.0 cm from the center of the sphere?