State the law of conwcjm zs95/ jn5c qt9ff we3*t7servation of electric charge.

  Is it possible for two negative charges to attract each othereq8gdz .y- m3nn9rbzl*-;jgb?

  Is it possible for a positive and a ne4o/kay*i1vmz4wr 9gvi38. qb ho)pms gative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass l80,x9 hj)d ixyrr c;n,wm/lq )gxyf0;tm:hfrod acquires a pmqf 8);,mj0hgyir/:,;h0lc d lx9x) wyxfrn tositive charge and the silk

  A proton carries a

  The model of the atom shfzicuff1gpi/ .1diz/r ,(a q 6ows a

  A neutral atom always ;/qjdcwvn:e 2 has

  An atom has more electrons than protonf4t j*oclg hy**aui69s. The atom is

  Materials in which the electrons are bound very tightly to the c1 j de-cm 4s22fckx+b8j5hbv,cs6hs nuclei are referred to 5cx+,8 cmv2h64-b2sefhd kcj s 1sbcjas

  Materials in which the electrons are bound very loose *z94xfl r8mtxly to the nuclei and can move l9t rf xz4x*8mabout freely within the material are referred to as

  A negatively charged rod is brought near one end of an untfu 9*pn klu,o6z 0: mlonw-l,charged metal bar. The end of the metal bar farthest from the charged rod wiloz 9o *n,n:p0 tl-uu,fwl6km ll be charged

  Sphere A carries a net positive charge, and sphere B loj)s ti6s7 7ak*jdrd-ne,t0 is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?-)o ,0jad*t ejdlt7s7ki6n sr

  How can a negatively charged rod chagw2k oy);x pt9j5dvi,rge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chvl 7ivv(/euj+arged glass rod. The elect v7ive/u( l+vjroscope

  An originally neutral electroscope is grounded briefly while a)e(6v1msh;gb9 pc u/iicc-,lo3e pza positively charged glascz(1i, 9pp/)c6asolbu3igme;ch- ve s rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral e: w78f0z2ud rbhk8ri qlectroscope, and the leaves separate. Then a negative object irr 8 7qz28f:bkd0wuh is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is f vjjbe/)pqhr 4o;7l.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 touch the negative object. At no time do 7l./e jbh)j;4pvrofqes either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constannvfg *n r/x/d9k7i* wmt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first char22 4:lfi.5 iyslp*aemz hlbl2ge is larger in magnitude than the sesll ml 2pii2b:*2a.h zfy4 l5econd charge.

  Sphere A carries a net charge andzbs vhkkilbc,eq1 /+q19*c( e sphere B is neutral. They are placed near each other on an insulated table. Which s *(1/ev sqhl1 ekcizb, q+kbc9tatement best describes the electrostatic force between them?

  Two charged objects attract each other wit*:ifs9u;4h ) h cdgwop)p1u xjh a certain force. If the charges on both objects are doubled with no change in separation, the force between thosuw)h)pjuphg1 4d ;: f x*ci9em

  Two charges are separated by a distance d and exert mutual attyrm48+ dmmoc 1ractive forces of F on each other. Immydc r4 m81+of the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with 8qw0wzgqm ;:ba force F. What happens to the force between them if one charge:w0wg8zq;m qb 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 prot* rg ,i0zcwwq-on are separated by a distance of 1.0 m. What happens to the magnitude of the fcw0, rwgqz- i*orce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by)1a4 glkqh. jcr,-vje (7z ylk a distance of 1.0 m. What happens to the magnitude of the force on the firyzgh1-r7,.4k(v qjejlc la k)st electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Wq oxwx,a *g3z,hat happens to the size of the force on the proton if the electron is moved 0.50 m closer to wz,qog xa,3*x the proton?

  A point charge of +Q is plrae:3c1ckga8 aced at the center of a square. When a second point chargk3:g cc1 er8aae 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 the center of the square?

  A point charge of +Q is placed at the centroid of an equilateralnh7.hv ke: u-hr/e: bre h*f1u 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 e re eu.hhu 7f-vh1khrn:b*:/due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not 5 --cw* w.uehi)mflypa vector?

  At twice the distance from a 1t; iznu+ 9hxi10 6n5x:m cl4ubr wxsvpoint charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negativ7cvob6 ympkc ak*u +- 5u-7;cqr+v8ccx vhm0a e and positive char+-7 bc8-p * k7+xhummkacv;coa0u q6yvcvcr5ge along the line joining the two charges?

  Is it possible to havem/if+ qsz :qgbj z0y1, a zero electric field value between two positive charges along the line joining the two ch q jyiz,1fz0bqm/:g s+arges?

  Electric field lines near psfn2:04vn k-klc q3y yeitive point charges

  The electric field showq*6cf+ho- tz: 2z)alb x v3ancn

  Can electric field lines intersect in free spacv+ jb,0pmj(ijr/g;k4d fpgw 0e?

  A solid block of metal in electrostatic equilibrium is placed in a uniform e 0*1 zyywqe,4m+o qtlodm(7aazg77r flectric field. Give a statement conceo47oez(gq l 7q,zt* amywaf+r 7y1dm0rning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eacl,z13zu :nik rxl4xxrt92a+y h given the same charge, the electric field (E) midway between the cen4+a2ly,3xr9izx 1u znt l:rxkter and the surface is

  A cubic block of aluminum rests on a wooden table in a region w;t icr9ut)z* l(hjlz*here a uniform electric field is directed straight up* rclhluz j ztt(9)i*;ward. What can be said concerning the charge on the block's top surface?

  If a conductor is in7(hsdx;ty shv; jq-e z.q/ 7ow electrostatic equilibrium near an electric charge

  A positive point charge is enclosed inq u *zn9we-0ei a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow si 9n0weqe-z* uphere has

State three properties of conductors in static equilf p sfko4xc:x(.82 cq:ef g.fribrium.

State Gauss's law.

  The charge carried bpq0cw vs76g )5whnz +gy one 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 protons than toiy2rc u:d:.electrons does this: .2cyiduto r: piece of plastic have?

  What is the charge on 1 kg kz(:ib(5ew woea 7ih- of protons?

  An atomic nucleus has a ,x7jtcfjhgjcr0vk/: r 5mb 9+; ck) ixcharge 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 ofm;poi.n)yxh qmpw(t 752zv 6 ,b+q tfhawkx79 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betweenztm hawiyx9)h tb(m.x;oqvkfnp7,7wp 2+q 5 6 them?

  A 1.0-C charge is 15 m from a second charge, and the force between tho ( (s.+fwscqcsy,k6e1cz aw 1em is 1.0 N. What is the magnitude of the second ch+1 w( kc.oyszawc(s6 ecf qs,1arge?

  Two 1.0-C charges have a force betwprcmmxu h896*cjq. pqmg: x02 een them of 1.0 N. How far apart are they?

  The force between a +seq;dmz qlhoz 4:(- pun oo+k(;l8 fm$30 \; mC$ 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 theal9(24 w xnw lf.i7yxrpq+go z+pbu,2 xmwo7(y are moveyfr,bxmp 7(oqx972 nl4gwa+x wl o(u.wi p2z+d to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point char -ldd8e40),weg)u ;dy uo mgluik(rm 7ges of 2.0 mC are placed on the x-axis. The first chargeyw))-lg(d4 ue,rme8lg7 umk; 0d uod i 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 the origin?

  Three point charges are placed on the x-axis. A c v3m fy)cbn2+9pe+ vogfyts/t 2m;8 xfharge of +2.0 mC is placed at the origi2 t;gs+byn/etvyf+3ffm 8 xm p 9vco)2n, -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 foll0f,o+ m i8byuwowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC atwbf o0 um+8y,i 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 wl-4k 9:bl(k*1d8oer guru iycenter of a square, and a second 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 o b*:k our iy89dlwl(1r eu4-gkf 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, 0rucc z9o( cjjpx) rv/4z s:bg3),nw+k); Q2 = -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 on the 5.0 nC charge? r39,cog pzzwn b) cv/u:xj cj+k(4)sr

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nCljsat,(z9gc7k8ei z- is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of thjkz(catsz98 g, el-i7e net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilaterat wuz6yv 01t v.9,pndqtd-f6ml triangle which measures 30 cm on a side. What is the magnitudev,w f09 661nyzp tutd-qd vmt. of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separ:m e :mp:-8lfx8uylvrated by 3.0 m. At what point, 8u -lprf:x : y8mvl:meon a line between the two charges, 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 originn*c5sjzub3a (w oo ,m: 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 zer*a ,n oco jzu5b3sw:m(o?

  Charge +2q is placed at the origin and char40a 2ftv j2th/. nbvgdge -q is placed at x = 2a. Where can a third positivev /a4tg0dt2.hf vb2jn charge +q be placed so that the force on it is zero?

  A copper penny has a mass of11hl l0jh*,k,u v ewmvx:3 vhksf4-tu 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 gravity by the attractionw egm1a bt/ c3-bo,3bg of a fixed gt3,mwe baog3- bc/b1 proton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thr9l cvhjxf67*n/u (b4djisu 0 peads which b(u jn7f*x 9vcjd is p/l64uh0are 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 magnitude of the doi3 s ex(+wszoy3 27helectric field at a distance of 1.0 m f yi+w3so(d3 hzs27xe orom the nucleus?

  What are the magnitude and directrml 5k b1*ft.jion of the electric field at a distance of 1.501 tk *mfblrj5. m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test c6a sr*qle:c4 jharge. What is the magnitude of the electric field at the location o:ls6c *rqae j4f the test charge?

  A 5.0-C charge is 10 m from a small test charge. Wy)u7jz2 2zkds;k l q+fhat is the direction of the electric f 22qf+ ydsjz;7k )uzlkield?

  A 5.0-C charge is 10 m from a small test charge. What is thevo5c6p3 4b sv xdkc-z3 magnitude of the force experienced by a 1.0 nC charge placed at the locatio 353ckvzps 4b6vcx o-dn of the test charge?

  Two point charges each have a value of 3.0 C and are separated /b0ha z7hu-clby a distance of 4.0 m. What is the electric field at a poi7/hcz- blah 0unt midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a mete, u+06y-tg;: u 7dyvhuqqiijo r stick and a -4.0 mC charge is placed at the 50 cm mark. What is the y,uy-6u+:i qvqiu g oh;jt7d0electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick a1rq3u rg6k -g:q h+bbjwec3g cl u7:/rnd a -4.0 mC charge is placed at the 50 cm mark. j/ q-7+hr :ek:wlgqu1 3rc6gguc 3br bAt 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 ;xc6 *r*2 tzb0x7p hn8(at gzxj*uh knm. What is the magnitude of the electric field bp8*z2 0x(ta*hnx;76ng*h x krjutcz at the point midway between them?

  Three 3.0 mC charges arets 6tgquls8iz;/dm2e(hh, (p at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the c62,dt(eqpsulh; sgt/(z8hi m enter of the square.

  Consider a square which is 1.0 m on 2 t iw1k.sa*1w ez;jwza 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 zk*2.jet;z ww1si1wa 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 charge of 5.bsfs q ;t2stt7b; d8;ykayud0)1j/ef 0 mC when it is placed in a uniform electric; )f uy;8sk eb;sd/12t0dtj7yfst qba field. What is the magnitude of this electric field?

  A particle with a char w2fv(7zcwy e/ge of 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 v2 cai4ovc/ da( kcm;e-j6 p1s6000 N/C pointing downward. Wd-i2c6k /1me4 opccvaa ;sjv (hat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0ejej3kbn5((j+zqfi9qx*+x a .150 g carries a charge of -2.00 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 elecjen3 bex+q9 (jq+(a*5xk z jfitric field?

  A metal sphere of radius 10 cm carrie9w3ixkg y;h.v s a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from t;.kygv h3ixw9he sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0f+8*0dvziv .)rvbgzf oap) (s mC. What is the electric fielfzv.rpafvs08vgiz)( do )b*+ d 6.0 cm from the center of the sphere?