State the law of conservation of elect2*rs)hc e2: j y*nbuzwzt;m-k ric charge.

  Is it possible for two negative cha* 50kguxfsq kgt7w:w 9rges to attract each other?

  Is it possible for a positive and a negatohm .xih+5)wvive charge to attract each other?

  A glass rod is rubbed with a piece of silkmi7 u zr6tgbh fq(l49n 7osexq48f8r; . During the process the glass rod acquires a positive charge an qf gq8rmxh77n;z49u (4f lbei8tosr6d the silk

  A proton carries a

  The model of the atom/8dis x/pxk qf sycoun94xyx:: +t;u4 shows a

  A neutral atom always hasvsc0mdbn5qo.* a 3e;x-2wkre

  An atom has more electel/uj;4;:fu 1 tbb5 xymo5dw :e ppke(rons than protons. The atom is

  Materials in which the electrons are bound very tightly to tha1uwi+9n )kw)c:3ektpp v .tze nuclei are referred to akw:v.tz9pu1ei) capw3)k+tn s

  Materials in which the electrons are bound very loosely to the nuclei and can mopx ,0cqvcu.k 03o7zmj ve about freely within the k.,703omx0puzcv j qcmaterial are referred to as

  A negatively charged rod is brought near one end ox6xe36n+x yq uf an uncharged metal bar. The end of the metal bar farthest from the 36q+6unxexxy charged rod will be charged

  Sphere A carries a net posit* kowqp+rkw: *ive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is brieflpowr:+kwq*k * y touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positive. u6 hdl1 pvt/y*+qwpely?

  An originally neutral electroscope is briefly touched with a po )w*8yvxl ylchy f8)x4sitively charged glass rod. The elect 84y) vxl hflx)yc*wy8roscope

  An originally neutral electroscope is grounded brw(t)q-0 edvgoiefly while a positively charged glass rod is held near it. After the glasd gotw(0qev- )s rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves wv19aq.dg; ydg+vg0 eseparate. Then a negative object is brought near tha0d q;dv+ g.vgy1wge 9e electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an jcfh/ :z3h1q1 pek)-yf tp r7ginsulated 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 does either ball touch the negative object. What is the final chargec )/ zpyh th3qgpk1r:jeff-7 1 on each ball?

  Charge is

  What are the units of the imi1s02ae8i2 la vj l,Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a di fj 4;:byr 0,sqgsu.u8cyvzh0stance d. The first charge is larger in magnitude than t:bu4y;y,zf 8 j.ucs0s grq0vhhe second charge.

  Sphere A carries a net charge and sphere B is c e2 nuxud;8v/1xbjl/ neutral. They are placed near each other on an insuxcl 8deb;/1 /vnjuux2 lated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargl8y)88 be,dy ym ckdivpue/9)es on boiv9d e) ey ycy8u)8dlb pm/k,8th objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual yl6a:bgv lutc 4lpsq: c9 /,:mattractive forces of F on each other. If the charges are separat9/v a4: ,:6gllsmlcp :yb cutqed by a distance of d/3, what are the new mutual forces?

  Two charged objects atjoq; f7l qe(b(,m r4kctract each other with a force F. What happens to the force between them if one charge is doubled, the other charfkr74l; qmqj ebc((o,ge 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 protono6rn. p4z6 d:yrfk z:n mofo08axcl 9* are separated by a distance of 1.0 m. What happens to th m4o8*k.dlf9 ncpzfzn:6o a6r 0oryx:e magnitude of the force 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. What happens (m ba7/w:ccgtw+hdg. to the magnitude of gd(g :ca hm+7ct wwb./the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separatedbzne7)g-o kkb k0b4z( by a distance of 1.0 m. What happens to the size of the forceb kbz)o (7kebzk g0n4- on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q ispw.8 .p9psf /j lvizjg5my*8c placed at the center of a square. When a second point charge of -Q il 9i5s /g.jp8pf .yzmvc*w8pjs 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 .at+k/f kkv8o is placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic forceao/.v 8k+fkkt 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 no/wjs7r,rml 8 lt a vector?

  At twice the distance from a point charge, the strength )hbcsni*zr0kvuu)h/ ), j1j91 fyzml of the electric field

  Is it possible to have a zero electric field value between a negative aye24g d4,itfa k;hq:nnd positive charge along the line jodag;nt, efk24 :ihqy4 ining the two charges?

  Is it possible to have a zero electric fiell- *rh(o3i 7yi9p gnmud value between two positive charges along theuo h -n7irlimp *3(yg9 line joining the two charges?

  Electric field lines near psitiv+xt2davfpqrzhy) l:d8;er3 7 i8ok6kqoe p,:e point charges

  The electric field sha0 (5i,et)wfnbe:tz m btz- 6bown

  Can electric field lines intersect in free ag2 ipv*s 66cqspace?

  A solid block of metal in electrostatic equilibrium is placed in a + v:+n lexkb+muniform electric field. Give a statement concerning the electric field in tm+ex++ln :bkv he block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamgkjpba /7vf :c5c o;n;eters are each given the same cjcnvpog :5/a7 bcf;k; harge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region a2 fdu/di 0p3awhere a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top sd 2aud3p0/fai urface?

  If a conductor is in electrostatic equilibr suxprh7f3 ks2;zgv/ a( h/fvq ey41e(ium near an electric charge

  A positive point charge is enclosed in a hollow metallix26fru4v fy,u k:bx p/c sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point direck pxu,yf :vufrb2/ 4x6tly above the hollow sphere has

State three properties of kfs;q ,3dq-wn conductors in static equilibrium.

State Gauss's law.

  The charge carried byhw ag. l9n46g*7cjels 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 0g2t 6ac,sbbf. How many more protons than electron6ba0gbf2 tcs, s does this piece of plastic have?

  What is the charge on 1 kg of protons,reepcmy;a.+8-jzohh 6 k cwd;fjv owt3 ;8v9 ?

  An atomic nucleus has a cc*lex5 qdv)nb5u 5 e,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, hlngl w(j+fm 9l/d:bj,ave charge values of 2.0 and -4.0 mC, respectively. Whlfg 9 md+ lwj,l/:(bnjat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force behhdvws*m(xe7jut,a 7+ d f.; etween them is 1.0 N. What is the magnitudevu t.ahe +xej ;7*ws7,d fhm(d of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. njaeg5bb 2r ds3 3kt(+ How far apart are they?

  The force between a v4cij ; /vaq.l$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 caex zihc g1 g5ey3/9+em apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cmigya15ee/z3xh9c + eg, what is the electric force between them?

  Three identical point charges of 2.0 mC arl/y*4+c,vuiex q6qd m3cnhkq8e vz0 drf+s+ (e placed on the x-axis. The first charge 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 onzi8uvc eq,/+qk d3cvs m+ qx+n0ed*rf6yh(4l the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is place ,kfa4dl- yo40 we9gyhj. r,jcd 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 o4 g4yjhfy0-a,9de j,l r c.kwat the origin?

  Three point charges are located at the fol)*8m; wdia ob98 pkndq ,v*edglowing 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 ad, ip moq *ke9w8d8*vbng;)dof the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a p .*-gpp8 f+6wuerwuepbs x:9square, 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 cen* p6.x uegp :wpb8psw+f-u9r eter. 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 m); Q3 = 5.0 pibt-p ;13az6qn)) hw0y ntnznC is at (0, 0). What is the magnitude of the n;pp36tb 1-t0nwhz)zy n qai)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,bam*it leb 82o,.xju;h) 8h xi 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directhoxh,8le;*m xi2 ).ji8 u tabbion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices)2zcw o6u caos7l;poz, (i;lt of an equilateral tz ;2splow6 l )ico;otz(ua,c7riangle which measures 30 cm 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 are separated by 3.0 m. At wha hrx:v *p:m( glkp8oo,t point, on a line between the two charges, would it be possible to place a charge of -Q such that thepr o,m8xk:( p*vohl:g electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin:pd/0 b;9e9eoehw*hskfck8aa )s jnsn n/,r 1 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 k)er9jpne nbk *8d sf /aa/os e1:0n;,chw9shnet force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed pvgwh84oi z(8 mdzeq18/v4w0k tfk 9l at x = 2a. Where can a third p8h8vk1f0 eok/q94 v(g wm lwztdp8i4zositive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total ofzhzz,u:2erb 5 $4.0 \times 10^{12} \; electrons$ 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 qp6 5df::o;gse 6;zg8kuf( lvk0m pdc attraction of a fixed proton some distance above it. How far aboz6;god5 d;k (k:eml v6:8fpsgu c0pqfve the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nol.ya w*mdm0dzp)6xo ( nconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulmd.)(lx py6dm*z o a0wsion 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 is7sgf7norxa 5.(s .ieb the magnitude of the electric field at a distance of 1.0 m fnbo fs7si(x5.e ra.7g rom the nucleus?

  What are the magnitude and direction of the electric field at a distance 8yck crtcmp*r2mz 5*3of 1.50 m from a 50.0-nC chyt2p*5*cc 8ck3mrmrz arge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude on/z xpcq-g, akt0)mr ;f the electric field at the location of the test cc )t,q g-0xzkan/p; rmharge?

  A 5.0-C charge is 10 m from a small test charge. 7- ekf . 9kef.pgocyv*nn;vf* What is the direction of the electric p.*y9 ok-;nef .fkvf7*nvcg efield?

  A 5.0-C charge is 10 m from ag2d 5bsw47zz 5p.lknt small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locatiold7 ntz4zg pw525bs.kn of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance of 9vd jip/ 1nu d:rdh:p 1r(;jmy4.0 m. What is the electric field at a point midway between the two ;d(/u9 h dy1j:jdirvrm1 np:p charges?

  A 5.0-mC charge is placed at the 0 cm mz;*t1)f0s nre jqph1gi b brt 5tb)7a.ark of a meter stick and a -4.0 mC charge is placed at the e. 5n 1t)1pt*7ib0r;jqbfht s )bgzra 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is pla)m v t-xynsn,-ced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At whavnt)sxy- n- m,t 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 bxxiv6 d.5) hsm. What is thx.ivs dh 5x6)be magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at2vf ,edp-:l lt the three corners of a square of side 0.50 m. The last corner is occupied by a -3-2:pvtdl e,fl.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at thy3 xsqg36z9fjwox/ju,ptx/6 e 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 mCxo 3fq6t/jj6 ygxw,9pus/ z3 x 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 i,ovp8rg n)b, cp45zf rt is placed in a uniform electric field. Wozvgprn,b fp8)r4 c, 5hat is the magnitude of this electric field?

  A particle with a charge i(e3uxh 7bs :8 e*bjlmof 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 elex/ /snc9rqi v9ctric field of 6000 N/C pointing downward. What cvs /x/qin9 r9charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries lpjzq v q*:4w4a 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 elez q4jp4wq *vl:ctric field?

  A metal sphere of radi/ pduqsfmw 2-/us 10 cm carries a charge of +2.0 mC. What is the magnitude of thf/ -q/dmusw2 pe electric field 5.0 cm from the sphere's surface?

  A metal sphere of ra 1(.dehc qs*q5u rp -2mg)sxgwdius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the s-shpquc1x mgqg*2()5 ed.rswphere?