State the law of conservation of elecmh rhm:c bv/+-kz:0setric charge.

  Is it possible for two negative charges to attract each oth5t3f hl d 9/irz.ebd1am7+csa er?

  Is it possible for a positivebo- lalxwf6k ga ocr y9-cf *o ,b40x.u8ts4(n and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process th9o-l df5(dw bxujvbmwth-py c+dw,)6. * vq 2ce glass rod acquires a pyftxd9,65-2 (m+l cb. u-vwdcdwb)hpwq* vjoositive charge and the silk

  A proton carries a

  The model of the atom shows a vqtb;gjo56zw/xls, .

  A neutral atom always h cp312*aws wjr6ykx qgu4 v4/pas

  An atom has more electrons tha*/f aizao9e),lu ah, fn protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclh 2v 2rbd :(lpbhp4po)ei are referrh(b lvd p :bp)h4rpo22ed to as

  Materials in which thx*fi 6e*momeq9nv6. v e electrons are bound very loosely to the nuclei and can move about freely within the material are referred to a6vf* mxioem e*v 69n.qs

  A negatively charged rod is brought near one end of an unchak;geg/b/ ebeqs+nj5 /rged metal bar. The en5nb gekjqbe/g+se; / /d of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positivdcljw( g3e0cr efguuj5 284 c-e charge, and sphere B 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 irc fj8u ce ld5g3 -ugwj(ce420s correct?

  How can a negatively charged rod charge an f3f 036orz85lxhe nbbv,gn:o, (vdxp electroscope positively?

  An originally neutral el sut;j0n (c9dt-km uv;ectroscope is briefly touched with a positively charged glass rod. Thdknmcu;(u9;s0tj- tv e electroscope

  An originally neutral electroscope is grounded briefly while a p +x bu/ju+i0u6zu;k qeositively charged glass rod is held near it. After the glass rod is remove i6 x/qkz +;ejuubuu0+d, the electroscope

  A positive object touchely t5 a6rp,wqlv);:hjl.hha2j bj:4 ls a neutral electroscope, and the leaves separate. Then a negative object is brought near tjr:w2l)6yth;qab.4p h al l5 h:vlj,jhe electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A n oca 0g:assk 8k-7dcefw1 :a(zeutral 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 firsdok:awscgc -sae: 0(f a 87kz1t 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 Coub01; mdztxdm0h f,f* nk o7;wblomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. 9ljtwomjh x9- 07h9urm nt 21s The first charge is larger in magnitude thanlwo-99s h1n 0ru j2m9mx7tjht the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placedd sk(*0mil9 n ag8q,po8kvsz - near each other on 0g lk8v ,mo( q*i98k-apn szdsan insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges onsoja ) ur,:/iu both objects are doubled with no change in separation, the forju :ru)sa io/,ce between them

  Two charges are separated by a dist)di f1gz+uwd akpp9l ; 7j7w4zance d and exert mutual attractive forces of F on each other. Iuzg9w p z;4diwk+)7l1afd j7p f 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. m71tju n)u0,j.6 ju*bxzxqy:dods. h drbd40 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 t7rsbd j:04xu,* zq.0h .u1ndbjdumjod6yx) its original value? The force is now equal to

  An electron and a proton are sepa6 jbuesfw7*+d:v beq7 rated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron :fesq* e 6wb7j7bu+dv is placed next to the first electron?

  An electron and a proton are separat8i2 (i fkb. y)ohbuh+fp5)ct oed by a distance of 1.0 m. What happens to the magnitude of t)8.h(ck ty+i2 h )fpfobioub5 he force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separh:6biy a4 349c8bes) dxxlgvkated by a distance of 1.0 m. What happens to the sizb cd4 bieyvskx 94ag:3hxl)68e 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 -ftz3bwxmj/9qcra 0z1 j4h3acenter of a square. When a second point charge of -Q is placed at zf3 w/1am4 h30 9ztbj jxca-qrone 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 mx 1ie, k0eq3oy 0;opxplaced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one 3oeq 1p,i x yemk0;o0xof 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 vector? )*idcfsvd/ d5 q7i2mr

  At twice the distance from a point charge, the strc7k1*yi oh wxly490d qength of the electric field

  Is it possible to have auju +zs26d7du zero electric field value between a negative and positive charge along the line joining the u du7j62 zdu+stwo charges?

  Is it possible to have a zero electric field value between two positive chargesh /hfvzi;z *4f(iz2 ac along the lvi;/fi(zcf a *zz4hh2ine joining the two charges?

  Electric field linesxmt n)2u3ot r5:muh q3ez 07kj near psitive point charges

  The electric field shogst vn0 e7dnr /+x-x;swn

  Can electric field lines intersect n1f8v v,-mexr in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform e i8 )+95yrme/hyyi;rxv ygq(blectric field. Give a statement concehq8b imy(+)/griy5;e9xyvyr rning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diametersw+ l0 zetnbv/;9c;wj d are each given the same charge, the electric field (E) midway between the zj;n+wd/b9tw; cv 0le center and the surface is

  A cubic block of aluminum rests on a *mdn1d/ u3v.zpsn f2wwooden table in a region where a uniform electric field is directed straight upward. What ca n31*n p/zsddw2f.vum n be said concerning the charge on the block's top surface?

  If a conductor is in electrostati sdh,qqg il6br,+p(oa+( uk f/c equilibrium near an electric charge

  A positive point charge is enclosed in a ho hm5hu4 .xs(optjc5f o9q*.qtllow metallic sphere that is grounded. As compared to the case without the hollhtq(muqst. hcp jo54. x5of9*ow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilipa9v3r18g( xqud 9vp35 i9joabs.iq abrium.

State Gauss's law.

  The charge carried by one electron vn y))dv3ey 7yis $e = -1.6 \times 10^{-19} \; C$. 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 manyz0y s as7l+ff7 more protons than electronsa slz7yfs+7f0 does this piece of plastic have?

  What is the charge on 1 k a+. 9s.vf+vtrie hr;kg of protons?

  An atomic nucleus has a charg 1ndwz(ee8(fd e 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, hav 3x(l: gyqyuz8s/bx/ke charge values of 2.0 and -4.0 mC, respectively. What is the magnitude sk y/bu: qx8gy/3xlz(of the electric force between them?

  A 1.0-C charge is 15 m fro+pp59cm+ y(zfzt1lk tm a second charge, and the force between them is 1.0 N. What is the magnitude of the second charge?+cy 1pfz t+ (mlp9t5zk

  Two 1.0-C charges have a force betik78 1ak(c u)lalft 4zween them of 1.0 N. How far apart are they?

  The force between a ) l,np:mf e/az$30 \; mC$ 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-+4oa wp ,qkhicb5l5;g N force. If they are moved to a new separation of 8.0 cmg+qi;c5,4b5opawkl h , what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on thed* zuncyb -t)( x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the (y u-bt ndcz)*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 :c,z+dycxc7d w 9e,cjthe x-axis. A charge of +2.0 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 w cdj yc,cde7,9xzc+:the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges aredhl9/xb7czab9.ai r 3 located at the following 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 is the magnitude of thb r.zi/a ax9lhd73 bc9e force on the 3.00-mC charge?

  A point charge of +Q is placed at the 9pir. eo2 zeet8 xu6w,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 8 .erw zp6uie29 ,xeotpositive 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 = -1.03 g1--g6c wgtijh* xvn nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is t* -6igvct3gwhng 1x-jhe magnitude 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 = 5/v5vns u 1;ujx 2c5bbc.0 nC is at (0, 0). What is the direction of the net force5;bxvcc1n 2v/u5j sub on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatera6d 2 r8ytqj)nkl triangle which measures 30 cm on a side. What is the magnitude of the electrostatic fkjyd2 )nr68 tqorce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what p3to +pg7zyck :oint, on a line between the two charges, would it be possible to place a charge of -Q such that the electrost zg:ky3t+7ocp atic force acting on it would be zero?

  A +3.0-C charge is atp5/lya8xl4z ad+ .kmb 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 zeroa 85dl+4aml xkzyp.b /?

  Charge +2q is placed at the orig)ol6f*x c 0cvein and charge -q is placed at x = 2a. Where can a thir*occlx ve0f 6)d positive charge +q be placed so that the force on it is zero?

  A copper penny has a masiug1pm y0e)0r xqmk65s 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 gravity by the d/utc2vz7 ge/ attraction of a fixed proton some distance above it. How far above the electron is tv7/cz/ 2utg dehe proton?

  Two 0.20-g metal spheres are hu8i)rc 2kgq3hy1(xxr g,j0;d6 dv i syung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart unt) i g q(2dr;ur0vyj x 1hcs8i6gkd3yx,il 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 iy8w;7 vwd6x1f2q jevelectric field at a distance of 1.0 m1v7y; x w 8dqjiv6fe2w from the nucleus?

  What are the magnitude and direww e6n .*hez9cd3e;hz ction of the electric field at a distance of 1.50 m from a 50.0-nC chargee*n d;hhew e9z w36z.c?

  A 5.0-C charge is 10 m from a small test charge. What is the magnrkcm:supt0 )7j-id9 situde of the electjm -cr7sud)s k0i :tp9ric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dj b.5 85y/9 adid8vem15bm-zftd,sm +ll frxdirection of the ed mam8lv8y5b-+dft f.x,5/ld j m1z5 b9ersdilectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thnc skem+6h2h )e force experienced by a 1.0 nC charge plahs) +62kcmnhe ced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance of,sde y muz.mg5trld;o;46t p * 4.0 m. What i4,t pd5um do ;.gstzmyrl6e ;*s 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 meter1 )t8n*sl aoo-veefh9 stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electrinv1h *seltf-o9 eo)8ac field at the 30 cm mark?

  A 5.0-mC charge is placed a 8a+v g+-sroqdt the 0 cm 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 the eleors+qdva +8g-ctric field zero?

  Two point charges of +35,qgkq-i uhd-*azs.h4x 2t at .0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magniz.hk4q i2 -tu *g t,5xaaqdhs-tude of the electric 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. d alkf7 y1k0e, The last corner is occupied by a -3.0 mC charge. Find the electric field at the cekyk ad70fe, l1nter of the square.

  Consider a square whin;mr6ej7z 7yv6py2j l ch is 1.0 m on a side. Charges are placed at the corners of the squa2j;zvj6n67ep r l7y ymre as follows: +4.0 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 charge of 5.0 mC when it . m00ify8irvy is placed in a uniform electric field. What is the magnitude of thr 0vyfi yi80.mis electric field?

  A particle with a charge of 4.0 mC has a md70ct0 lg .1glewtyk ev 7aq*5ass 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 w s8igu9bx;vg5 (dfi)1p x.u ais placed in an electric field of 6000 N/C pointing downward. What chargex;d1gga pw().vu x89ibi5suf 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. The ball is py4nqw9c; 1oyb(sxt *blaced inside a uniform electric field, and is suspended against the force ofcos 4q9wb (yx*b;1tny gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.-o.sl5 jvyu1y 0 mC. What is the magnitudesyul-ov.5j y1 of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electr*lh8zt4a vp /dsl,br.ic field 6.0 cm from the center of the spd*rsv/abl l. 4t8p hz,here?