State the law of conservation of electric charge.j b ed0xw*37-hx1hst q(u 19czeczip 6

  Is it possible for two negative charges to 8nr:8nk7vsl(h*kfvp jk, a cq( fjn25attract each other?

  Is it possible for a positive and a ne:veuy+ 6odmb vj* 7k8 z4dcqn3x2* krugative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod ac 3bk*-x4pbuh squires a positiv u4 bp*x-bkhs3e charge and the silk

  A proton carries a

  The model of the atom shohjm fzmn84z (uoy+r,pmzrr.* c ,jg-5ws a

  A neutral atom alwaydd+ - rnhydsqe9 zbsz 5+bg381s has

  An atom has more electrog u ms80;u9fz8kpq uu6f+j9xe ns than protons. The atom is

  Materials in which the electrons are bound very tightly to tnxi u,7r3:xurt i(: 7phjkec )he nuclei are referred to xx ,u7rnckj73:rih: ) tuip(eas

  Materials in which the electrons are bound very lbgj+;em61o,da *u 9gh sjt(tsoosely to the nuclei and can move about t6otdm sj+ hj9;g(segu1a,b* freely within the material are referred to as

  A negatively charged rod is brought near one end of j6ljs)zcdwu7u876vm ai cb73 an uncharged metal bar. The end of the metal bar farthest from 6b7cjmu3u wasjzc68)id lv 7 7the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutrs+gvtg j9ox f/p*uk /fl-h:5e al. They are placedp9 -jk 5 /fgue*:o ltxvgh+f/s near each other 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 ea ipi6g*7 6hr)lthy6 an electroscope positively?

  An originally neutral electrosco+41zrgx pyg4a pe is briefly touched with a positively charged glass rod. The electrg4gayr+ x 1p4zoscope

  An originally neutral electroscop0mb tdm1ztz ofl016q8.d-k qte is grounded briefly while a positively charged glass rod is held neazq d0z11f 6qdlo.mmbt-k t 08tr it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscopezfv 4 kub sx figoz+9314+etn-, and the leaves separate. Then a negative object is brought near t4vf4t+exz + igsf3-bzuokn91he electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutr xbfr/3y :ad/tz/tg2ial 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 fir d23tg :x///fyta zibrst ball, and stops. The first 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 of the Couj5sw7(z+b1+ng0 x(z,w c t;igd iiaculomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by m.wm (bo.9seo1psi y66j ap8d a distance d. The first charge is larger in mdwba 1.yeoj 6689mm o(s pp.isagnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They y(18kblq sog/sb/kx m-e19ntq mwoa-pj9j- : are placed near each other on an insulated tekmt(1 p jk/ 99: noj-a8b -wbs/qxgym1-olqsable. Which statement best describes the electrostatic force between them?

  Two charged objects attract each /*hjv 5;muaufnsm8y 6 other with a certain force. If the charges on both objects are doubled with no change in se*m6v asy5jfmu/n h8;uparation, the force between them

  Two charges are separated en ffy ax) 4+yoc)bf7uzvj8. r (no77kby a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, (f +oy7u) )j bf7o 4.xn7rvan8fcye kzwhat are the new mutual forces?

  Two charged objects attract each other with a force vb gqx6:9i3knF. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separa x9k36gbvn:iq tion distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a prouv/,shrlit:a 9ytl) :ton are separated by a distance of 1.0 m. What happens to the magnitude of the f9 ui:vlatrh),s :ly/ torce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Whatif 0w (ox9t 4kyw,5zse happens to the magnitude of the force on the first electron if a second electron is placed next ft swzio (ky5,49e x0wto the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens tsk2hxud3p7* 3i9o:jic unz -l o the2dz i3s oln3jpi:7u * uc-kh9x 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 :evxaacy- k ,ks*94dqa second point charge of -Q is placed at one of the square's corners, it is edk4*a-c9a ,: qxvsky 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 eay7:xfij npo*eds 4 ,*quilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrjp *dx:s7fy ie*n,o 4aostatic 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 vect av-4ut ysvwl, q.j7 5s k0hpv2rml-8dor?

  At twice the distance from a point charge, the strength of the eletbf9)e)qwbk re( ;) cjctric field

  Is it possible to have a zes/m b 4xl69ohuro electric field value between a negative and positive charge along the line joiningb/9 4sxo l6uhm the two charges?

  Is it possible to have a zero electric field value between two positive cs*qya a78qb8*q pxx2 qharges ab yqx*xs88*2aq apq7 qlong the line joining the two charges?

  Electric field lines near psitive point chargesg87k toq37ph+ tuly( h6pacg.

  The electric field shown g0oywsi.z5m0

  Can electric field lines intersect in free spaceeb983l t-(oh mlms,i rgl3- sy?

  A solid block of metal in electrostatic equilibrium isow) vlg.p p7h- placed in a uniform electric field. Give a stat-o .g7vppl w)hement concerning the electric field in the block's interior.

  If a solid metal sphere az*nn0yyut sf2abk ),4 nd a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface iy 42,bn*u zys0fa)nkts

  A cubic block of aluminum rests on a wooden table in a region where a un fs:ef,k2u (. sou dsf(w)apb)iform electric field is directed straight upward. What can be said concerning tf() ).speau,oss(kdbuw f:f 2he charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an xr- wtps32jcw1:ze 5 zelectric charge

  A positive point charge is enclosedad/u qi3vs73d n3e2 lm in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly asv3 amdn3ieq3d ul /72bove the hollow sphere has

State three properties of conductors in static equilibrium.0fx*v oh+cx)+x)ulkik+ 7m gl

State Gauss's law.

  The charge carried byud5.o5)4ab 7a wnn mpn 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 char+ cch):/ wsykpilu4 fy )5, 2d8svvcpkge of +2.00 mC. How many more protons than electronpvi,hp5l4s y2k : f/k8))c cwcv+usdys does this piece of plastic have?

  What is the charge on 1 kg of prlmq,f dbc*kl;j8yu9 +otons?

  An atomic nucleus has a charge ors))l jebo e:h)/h q7z2asq,jf $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, hcmz,q),b. ch /ifdap0ave charge values of 2.0 and -4.0 mC, respectivemp da0bhc ,qifcz /,.)ly. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 N m5xh b(ryo:w,(ae(:d mtp3dd/t yz +q. What is the magnitude of the seconp edat qhmz dywo3mybr(x5+/:,( t:( dd charge?

  Two 1.0-C charges have a force betw0f pcultqy51e o)x t7(een them of 1.0 N. How far apart are they?

  The force between a 1fqjfih xr sby76yp2++)y)m h$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exphdxb xyi 8+/+bo- nsilt04ab4erience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force b+t-4b o8 /40idhxyin+sablxbetween them?

  Three identical point charges/x*sk gg )p fny,6:2wifaqn3n of 2.0 mC are placed on the x-axis. The first chargfg2 fq 3npig,ky/:a) n6wxsn*e 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 charge of +2b xyjij6:ig6;r )t k.m *hn5wm.0 mC is placed at the origin, -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 origyt)6bkmxj *6 m5r ijhnwig:;.in?

  Three point charges are located at the follo-m+b6smt6gam *. e5if(ecvhjwing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What im m-b fc 5g66e+vs.(*met hiajs the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is place + i6(yunndce7d at 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 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 thd7n6 ce ni+y(uird 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 4 qv7g c-7 kqvg;ke0keat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the ma-kv4k0; e77geq ckqg vgnitude of the net force on 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 = rcu+n zi cevg+37gx1* 5.0 nC is at (0, 0). What is un+*cc3grveg x z+71ithe direction of the net force on the 5.0 nC charge?

  Three identical charges of 33k1 lrfew( a/i.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one /ae ikrl(1f3w of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what poi; ftk+bt x ,+/l5nxbxhnt, on a line between the two charges, would it be possible to place a charge of -Q such that the electrosta+fkltn+5bht ; ,xxb /xtic force acting on it would be zero?

  A +3.0-C charge is at the origin ansdl)oeq;i7*p3 :jv 4q 8; dy t3vuqezad a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the n;l) 43;suv*: a 3zqyi q oteqdvp78dejet force on it is zero?

  Charge +2q is placed at the origin and chargefuv k;xsw;e7zf kt;z-9t: r; d -q is placed at x = 2a. Where can ek:z rz-v;xt7 ;su9 ;wffk ;dta third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tor,1b)o 0p6cuep: zpvgtal 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 grk8enc,tsh 0* -yuz.u 4 s7zzhiavity by the attraction of a fixed proton s hzuy e,4h s*ic.zun7s-zt8k0ome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduc,4uifpl hs90j ting threads which are 30 cm long. Both are given identical lpus 4,0j9hif 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 79n us ;al+kmrb9/m:z ent2ma charge of +40e. What is the magnitude of the electric field a27n;nmza/ abtmle9+ : r9ksumt a distance of 1.0 m from the nucleus?

  What are the magnitudeu no5;pvn o.:r 6sa mv ,f:z)q7udiht; and direction of the electric field at a distance of 1.50 m frv ); o : ,u;ds7u5ifz:a.6n vpnqrotmhom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is th1mmy:y quk)ru92pr u4*gq1uw e magnitude of the electqk4:y1rw 1*uumpu 9 )grmq2y uric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test char f k3(cvja)shc 2y;ft1ge. What is the direction of the electric f; fskvj1h )2ac3(y ftcield?

  A 5.0-C charge is 10 m from a small test charge. What is the mxr4g7 wq4it68on8pj hjo q,:l agnitude of the force experienced by a 1.0 nC chargeo4o:, r pqix7ln wjt8j6q48g h placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are svebgg/ fy5 5v+ ko 0cb+vs- 1xeq-exi;eparated by a distance of 4.0 m. What is the electric field at a point midway between the ;+sv- +exvyq/ bx0 gbg51f5 oce-veiktwo charges?

  A 5.0-mC charge is placed at the 0 cm xj*oa*onz/4hz th93yg)df 0vmark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is tj9 *t4h*hod 0zxznv)y/3a fg ohe electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 sddg;/9i0tf (u**cslaw8,6dz x hp y lcm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joinincdl9ah z6gsu(w*, 80tid /spx d ly;f*g 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 xal+ 2zje3 s.idkvy v+4qx :yf; = 0.20 m. Wh :yqfil3vx++zvj .4k;y esa2dat is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squarekpq ngw3hq 234 of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squa3g hk4 2qnpq3wre.

  Consider a square which ii9filb;y. ybbh+z 4b9s 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 my ;zh4b l+bb9b9ifi. yC 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 ofq(*4i)) etxoje y1u da 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric f4td))1x u(oej qei *yaield?

  A particle with a charge of 4.0 mC has a mass of k(csozy2. f 63 v ti(pm)uthm4$5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placedg p5:kj3nbn828sm*cs0sge xj,c*d,lzqb0qz in an electric field of 6000 N/C pointing downward. Wq:, pjxn,sk 8 z8g0mj2szcbs5l3dg b *n0e*q chat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Theb (g ahn2,5bpe-i,axj ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and directionpaxjn,bhg (5,e2iab - of the electric field?

  A metal sphere of radius 1 xmdtod9sv6l jz8 e ps(.7;zh.0 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surface6m sv 78x.o hlt(9zjs pd;z.de?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 myzy+ l26t tdr6C. What is the electric field 6.0 cm from the center of the sphere?26t+ yrlztyd 6