State the law of conservatio(.*0pqbr)d qbyow y0o n of electric charge.

  Is it possible for two negative charges to attract each other? s-s)iyp(bvdf3 /j hk,

  Is it possible for a positive and a negative charge to attra my- +,ro,3pwzfnm -qbct each other?

  A glass rod is rubbed wit/t5bj 8dxl- ++g9qhceyp iyc1hd/vu 8h a piece of silk. During the process the glass rod acquires a positive charge aq/x1/ut +hdcd b-5cvig9e8+j 8 phy lynd the silk

  A proton carries a

  The model of the atom shows 2fxra4b2v nt4a

  A neutral atom always h+k27 oj+i npmqr-z/ v0emj1nu as

  An atom has more electrons than protons. fe4e d0:ge4s i The atom is

  Materials in which the electrons are bound vgk7 l08 lh6,) bo xjixujsnv(y(ak4c)ery tightly to the nuclei are referred to asy74o8( (s6k) ,l kguaxlxvjchnij0) b

  Materials in which the eleoyvu rnmz fj 8;t/ 3*6xp,sjs0ctrons are bound very loosely to the nuclei and can move about free 8sjj*3msx t uzvr /ny,f60;oply within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal barw )u 8jvaa pczz7+7p . d-/4;a f,arriuzzoxa1. The endz-a 7/1u7adop uv r pj,f+z) zaaa8zirx4c.;w of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positn/ h u,yoc/w/jive 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 is cj,/nwhy //c uoorrect?

  How can a negatively charged rod charge an el-fnm9;o w4m dpectroscope positively?

  An originally neutral electroj(r 4q;9n gn6qhgcx1tscope is briefly touched with a positively charged glass rod. The electr gx1qc(ht9; nrn4j6g qoscope

  An originally neutral electroscope is gr2 m;exlha8voct b:u24dem 57 4oget90pd f:fiounded briefly while a positively charged glass rod is held near 9e f8xf05d g7 d2t mcotm:u4p haoee42vi l:;bit. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscoqdtn: hr tjgn9u203-t pe, and the leaves separate. Then a nutr d2tnj-hg9t0q : 3negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is plac5 *)r.zkr4gor/* uguz3.wzhfrwfx f.ed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A se. .*5 fr.fz rkufxzh3wg4)gu owrr*z/cond 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 does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb conx2iao 4nv5 hyoznpgvu.1ik4b /gr(/ (stant $k$, which appears in Coulomb's law?

  Two charged objects are -vk8r+aey:zp separated by a distance d. The first charge is larger in mag:+ra-vp8ky eznitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They ap49pd u(y+vml re placed near each other on +vd(ypul9pm 4 an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges oj 2yar*k4x+rc cbmw))n both objects are doubled witrb)2)a+wc mx 4jkr c*yh no change in separation, the force between them

  Two charges are separated by a distance d an6f;j imr3h0 owd exert mutual attractive forces of F on each other. If the charges are s 0r;ji howf3m6eparated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the forl,-si2a*pzp5tu/le. fu5q 7x ai2yv cce between them if one charge is doubled, the lep atl u,2i755vqs.fzap/yic u *-x2 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 distzfz7yqqb ve0b +6)k,yance of 1.0 m. What happens to the magnitude of the force on t0fy 67z )bzbkyq+ q,evhe proton if a second electron is placed next to the first electron?

  An electron and a proton a ek674wl-qyqyre separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to k ywql-y q4e76the proton?

  An electron and a proton are separated by a di:)h hca(o 6jmpstance of 1.0 m. What happens to the size of the force on the proton if the electron is movh (6o)ja h:mcped 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second (/v 1kz-kkf mlpoint charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0 N ack( k1m-fzl /vkts 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 au/50egj* ,a:+hzca2 pppkveyi)k*iplaced at the centroid 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 :pihak)05up/ej czekp2givya,** +acenter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is notw2.cxcgcc//u)at im6x ) o2 7a*t cmzv a vector?

  At twice the distance from a point charge, the strength of the electric field 08 ;+anprb-.gsuxsqn

  Is it possible to have a zero electric field value between aim0r 8moeip-; negative and positive charge along the li-mrpim0;e o8ine joining the two charges?

  Is it possible to have adum+ a86s;k( wnmpqjb;g*fu;(*xk+b zwdhe 2 zero electric field value between two positive charges along the linew2k6*e8;a swbhjpdu ( *u(;qndf+m g xkz;+bm joining the two charges?

  Electric field lines near psitive ibzh) mm,/g xc6p 8tv4point charges

  The electric field sh7zg5 x(3qkbe eown

  Can electric field lines intersect in freo1ue+eoo3e 4h8 :itd- bdztn( e space?

  A solid block of metal in electrostatic equilibrium is 5bwdq (w yr;s94 sepmp4un 2xx4 1*skcplaced in a uniform electric field. Give a statemu mdp x4w94p;y1cb (k*seqxn s2rs 5w4ent concerning the electric field in the block's interior.

  If a solid metal sphere and a hol) 2oyblzw2+xn low metal sphere of equal diameters are each given the same charge, the electric field (E) midway between tznwlxoy2 b)2 +he center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wheg )k/dezjw 2(ap8tkez s,3-kere a uniform electric field is directed straight upward. What can be said concerning the charge on the bk2 -d pjkgee(8sz,)/azkwe t3 lock's top surface?

  If a conductor is in ;jn5jkkmdk 9w-d, 5x de baz/+electrostatic equilibrium near an electric charge

  A positive point charge is enclose+3qz:; 6/c,j.w clo bc ydlnojg0 rcy;d in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electri lcnl;/yjz6:3rc jo ;+ygb,oc0 .qcdwc field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium.o mb u3f0da j4j,,z;k*jfk6xdb1 x)bc

State Gauss's law.

  The charge carried by one electroum8yp7:r jl f1n 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 thanbzi 52kq5j2p 82tmq ep electrons does this piece ofj2z pi5pq q bt2k5e82m plastic have?

  What is the charge on 1 kg of prot pis,d d8xlqj0zsgf((d;m5v (ons?

  An atomic nucleus has a ch sq8*cz jljw zz( o2te+)r*e9wycs+ /large 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 of 2wm(7is)wmu v x3j+,ic.0 and -4.0 mC, respectively. What is the magnitus)u 7wxm,3cimiv( +wjde of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is*3rjm7pjcl l o2,/l lo 1.0 N. What is the magnit73cr*2ml /l ljjo plo,ude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far alahg 61l8/t- evfm z0lpart are they?

  The force between a ,br*si 0be3mn $30 \; mC$ 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 for7 bhfbpdiz/4i5* dq5u c)v op*ce. If they are moved to a new s p7)pvhi z*4ddu *bo/5icqf5b eparation of 8.0 cm, what is the electric force between them?

  Three identical point char d. x-2hy0 ft rejyy*rmn9i9k8ges of 2.0 mC are placed on the x-axis. The first charge is at the originfynkyxi t y820*er .hj9-mrd9, 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 at becu*+g-*ws v0wpdv 6ydh(jwo*u w(- 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 electrow(*j+wbc*yg u*-uwds p-( 60dvowe vh static force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC asrb*52 rb 7rnqt x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. Whs * nrr572rbqbat is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center ofdi5(a -ast- u5 bl:w4c1hj dww .6gkmk 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 onh5:a j m5ackgk.w-w ldbsd6(iw-u4 t1 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);j blidv4tuys ga( s/816*1llm Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the maglss 6mta4 1v1ub(l8*l/ iydjgnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); l(0b1fu:v v rzQ2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on tulbr :1fzv0(v he 5.0 nC charge?

  Three identical charges of 3.0 mlju)+gbthzd(h v 9l4y;d-rw+ C are placed at the vertices of an equilateral triangle which measures 30 cm j v(byhgd 9d+ hwt4l);uzrl-+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 +4Q, which areui( tda6sg5- 2klah/y separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on i ig6al5ky 2ds/ -auht(t would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Where on y92q hffuqw5+the x-axis can a third charge be placed so the net foquy95fqwf h+2rce on it is zero?

  Charge +2q is placed at the85 h5c ey 7yldn(yj(gz origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that th5(75ge8ny zly ch yj(de force on it is zero?

  A copper penny has a mass of 3.0 : arivl4q )gt4g. 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 wjh;eb4hs)c 2attraction of a fixed proton some distance above it. How far abo)4jh bs;ewch2ve the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduc68m2llmlqdr:s tk (rw b7( 0rvting threads which are 30 cm long. Both are given identical charges, and th8wdv6l((tsr blq 27lm:r kmr0e 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 elecs-(qhw*xls ggjb3 7vj)msu 16tric field at a distance of 1.0 m from the nucl s6qw13()ugsmvlj- sxh7b gj*eus?

  What are the magnitud ppmyh*uq -dqb v,5,h)e and direction of the electric field at a distance of 1.50 m f) p vumqp,hb,5-qdh* yrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a smalmxw+xo)p u6b :l test charge. What is the magnitude of the electric fb+o6 )xwx mp:uield at the location of the test charge?

  A 5.0-C charge is 10 m from s /ouxcm 3f,i(i;ur6ev*+u p fa small test charge. What is the direction of the elue u/i6vi , c3mur; *f(foxs+pectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of du*s6dput e v 4+pq:w-the force experienced by a 1.0 nC charge placed at the locptw -v*qud6s4e+du: pation of the test charge?

  Two point charges each have a value of 3.0 C and are5x qh8upf cuwsk *)3f( separated by a distance of 4.0 m. What is the electric fie5uxuhq(fwc 3)s*fk p8ld at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mar.jqw v;s, .vodk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What iov;dvwj, .q s.s the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at thewe a:,vbe (ugemev :a)x+3d0c 0 cm mark of a meter stick and a -4.0 mC charge is placed aaame,weue ed 30(b ::v+)cvgxt the 50 cm mark. 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 = 0.208er( gt2 e7/-z blpocp m. What is the mep-g(/pr o2 7ebt8lzcagnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners o.h)4g cvz *z76jbt24noeatps,j vw .bf a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the ce2jb7bc6g.jp hn.zeo,tzat4 wv v* )s4nter of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at thn 6p,d4a7xy x efcb9s0e corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1,f7xdabns0xp69y ,e4c 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 aws28s1b-kim : g3g /u heiw5du charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric field gmeuu-31d2 :w/bw ik8s 5sgih?

  A particle with a charge of 4.0d - vy36sf-rpv 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.u5yf1f2hn,skf (5rk/ v/ugf h120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be sus/k 2 1h5vhus5 yurf/(gf ,ffknpended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC.hmkl73yw ) ,dtv1ks7t The ball is placed inside a uniform electric field, and is suspended against the force m3)7tk y wvh1kd,t7s lof gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the mi5vp7sl, ht272gxhiw tu22d e agnitul iwg5,7s72epxuit 2v22t hhdde 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. Whatyx n5r4l/ t vr4qgy+n1 is the electric field 6.0 cm from the center5+r x/ 4ryl 1vnnt4qgy of the sphere?