State the law of conservation of electriaolk n/c+d5 ;o:sxes,c charge.

  Is it possible for two negative charges to attract each othert-s/x myltfn9d 5 9a11 iilut/?

  Is it possible for antw)lv *i u0/s positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the97f a tesglha..*mad 5 process the glass rod acquires a positive charge and9t*lmhdf..sa a75 age the silk

  A proton carries a

  The model of the atom shows akgtu5)w rz56jdws; 6 a

  A neutral atom always has, );omshedda-s l g,l41j2me81a2evul/ jpq x

  An atom has more electrons than protons fr8ujn rp20b at,xv1wi:71by.in e4l. The atom is

  Materials in which the electrons are boundl5t+qrd-41yorzvk 4 h very tightly to the nuclei are referr 1rzlq54v tr+okyh-d4ed to as

  Materials in which the electrons are uc 6cx r,ias))ktzi8kloc :y r)vo0)7bound very loosely to the nuclei and can move about freely with))zk luk) str r8y cx6o)0,a:iociv c7in the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bah,taz12ukui+ v) u+ g:xzdng .r. The end of the metal bar farthest from the charged )+ +gga. tu xknuidvh2z,u:z1rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are p yz6, hp5dbre v6f58zglaced near each other on an insulated table. Sphere B is briefly touched with a wi5z6dv ryhzbep 6g5 8,fre that is grounded. Which statement is correct?

  How can a negatively charged rod 5gtbz cpjqh;2iy6 h8f:h:y. fcharge an electroscope positively?

  An originally neutral electroscope is briefly touched with a 2,s,p) n-pslbb8+uappmy 1i xk: uhb+ positively charged glass rod. The electros x-lp:b ,mu uha)in 2 b,p+bp1sy8p+kscope

  An originally neutral electroscope is grounded briefly while a bwyh(y.8ng.4 csvxe6 positively charged glass rod is held near it 6.g xw8. (svebn4yych. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves socmi*:ie q.8w eparate. Then a negative object is brought near the electroscope, but does not touch iwiic:q mo* 8e.t. What happens to the leaves?

  A large negatively charg-w,x * yv5x;t* 8siaiwws zn1zed object is 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,nvzwa,s518 ** -xww yix itzs; 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 constants; .ra iyxkvtzlo/;q* 28m8n j $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first cha:-10cav n1evwcsjb 9f rge is larger in magnitude than the second chfa9bv0 -cn1v: w sjce1arge.

  Sphere A carries a net charge and sphere B is neutral. They are placed net7z ph-l a,n2zar each other on at l 2nhz7,za-pn insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with k 0t vvb0*b (ighqsezk) 8mxvlr7:12la certain force. If the charges on both objects are doubled with no change in separarx)bqzl 0k: 2bv vikht7 1e(svgl08m*tion, the force between them

  Two charges are separated by a distan ig1ke 83-vakoce d and exert mutual attractive forces of F on each other. If the charges are separated by a ke ko38agi -1vdistance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to thd 0w+a*it .brig-jhg5e force between them if one charge is doubled, the other charg0 i bd-tiw*jr.hg5g +ae 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 d zp o p7dv0hvc3(8cr.6b)8ku 3zygytseparated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if op3z0ubp ) gd.6 vc(7z8hy3cdrtyvk8a 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 to dz5dw:uy8hc5the magnitude of the force u5:yddh5zc 8w on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distancv pu;lnt6f)au u)8zv6e of 1.0 m. What happens to the size of the force on the proton if fzp;u)v)vt8nulua 66 the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is plac+:x; r1tahbn*nlztpw 6mr;1, x zci7wed at the center of a square. When a second point charge 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 squarer wlxm rz wbn ti1c;h:n a7*;x,6pz1t+?

  A point charge of +Q is placed at the centroid of an equilateral triangls5oe s fl-q5:ge. When a second charge of +Q is placed at one of the trl e5o5gq- sfs:iangle'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 ncz9 se3.qtz6is not a vector?

  At twice the distance from a point char /.2weth.xvk 1bss0 nhge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and pufy, ,u 5hu8ayositive charge along the line joining the 85ua ,,hyufyutwo charges?

  Is it possible to haw og.7zhx)3gd 2o p3a.q7ydo eve a zero electric field value between two positive charges along the liwo3.eh dd o 7.y32q o)pzxgga7ne joining the two charges?

  Electric field lines near psitive point chargsurf,ncx-,:t es

  The electric field showa +foay4/m,fgvw k9n *n

  Can electric field lines isp/ cw8q:2n-mnm. j7kyte qi*rva5m*ntersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniforbhxepk (s2/ (rm electric field. Give a statemkbs/ (rh2( xepent concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal spheru* ra57r1phbd e of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface isu1p *h75rradb

  A cubic block of aluminum rests on a wom* vi5ag,) bdh fe f9a l0j(h4ai0cvu1oden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge onv i*)h5b4 ,lfefuadih0 ag0va(mjc19 the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric cp z 6i5j0f g6kc6gyy ygs:-7q,sncsr2harge

  A positive point charge is enclosed in adj8nh *k xr, cr-/,efa 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 sphere,*a ,-8 r/ejrfcndhxk has

State three properties of condul 5)lh3jy4gku ctors in static equilibrium.

State Gauss's law.

  The charge carried by o mv6w0k ) po 1 ywdq-1v)jo,6tmdy: zsrvgc*g)ne 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 prh ,+gnqhlmiq+o 49b r r:n)zx9otons than electrnr :x9nh4g)9l, q hqrzmibo+ +ons does this piece of plastic have?

  What is the charge on xee(es. 6k)ad(7ici rn0 0 ntt1 kg of protons?

  An atomic nucleus hasa v 9l5kszb zkh250mb+ a 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, have charge values of 2.0 y vtkuq23e hwz*) eb+1and -4.0 mC, respectively. What is the magnitude of the electric force between 2+ hy3e1wuvq)ke*t zbthem?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1 h* ,mdsaw-8zo-0 oz 4 mcvllynb31g9h.0 N. What is th g4w 9z-bhvy s0zconm13 h8 ,doa*m-lle magnitude of the second charge?

  Two 1.0-C charges have a force between them oah *10tw5h dgnw6sqrioo8f ;5f 1.0 N. How far apart are they?

  The force between a auz )x,d9k b8m$30 \; mC$ 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 they. gm72sl6eft 5lqm 5zl are moved to a new separation of 8.0 cm, whamfetsl 5 g.62ll5qm7z t is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Theen 1kbw;zd:jlg6a2. ywox+*r first charge is at the origin, the second to the right atznol62.kgwb:ey1dw *j x;ar + 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 fzwzs v73q o;n0:hflz 1o-8g vis placed at the origin, -2.0 m Cnq8fz-l ovh;z z3 0w:f1g sov7 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 area/vinnfc4f(f+b 7g*z located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x =f f7z*+ngabvc4 n/if( 0; Q3 = -5.00 mC at 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 center of xc-1 1ghh7ek w14juob-f8ikr 4fi:kg 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 4fki4ouf81wxr7:e 1hg jkbi g-hc- k1 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 cz,n(a-ajf ; ais at (0, 0.10 m); Q3 = 5.0 nC is at (0, fnaj( a,acz-;0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 8 w5ybkff9g8vd:o nwgd9ee43 1w5 *n1m b xzry0); Q2 = -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 the 5.0 nC 3f e x yk rwemw1* 899vgondzywf5 4b15d8:gbncharge?

  Three identical charges of 3.0gclguwaxa9g*w -1r /*/ q:xowrhg+k / 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 onexgw/ a/9 r+xq1-gwco*r*:aklgh/w g u of the charges?

  Consider point charges of +Q and +4Q, whic 9/tg69zik lnbh are 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 elet9/klgni6 9zb ctrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at v6)edc/ c ic9xx = 4.0 m. Where on the x-axis can a third charge be placed so the net forc/)e v6i9x ccdce on it is zero?

  Charge +2q is placed zl2 mdnmozy e.9n howg -h1:+1at the origin and charge -q is placed at x = 2a. Where can a third positive col:zhdmey + ozn1m.- 2w1n hg9harge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 gtg 32gmnfgxs;2t 1um53hi) ,cm rg(jv. 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 attraction of a fihypeh ik8h :l f+:1c3qxed proton some flh8h3iq :e+:y h1 ckpdistance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point byt g0 y w+xh.9nhks-ju+ nonconducting threads which ajg+shh wx 0k yn+.t9-ure 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. W*/u ;tg* fl.ghlvdce tqym.x-d-. o(x hat is the magnitude of the electric fxhcgfolv-m.;-l*td.d y./egu* x ( qtield at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of th/yq0l)lgazd/iflgo6g4 ,q 9 ly*y ng9e electric field at a distance of 1.50 m from a 50.0-nC charge?l ggnl , 4lyd*) 9ly6gg//qq9oi0 yfza

  A 5.0-C charge is 10 m from a small z:: +pcizu)cu yf6y2 em gm;g4test charge. What is the magnitude of the electric fiem6ce)u yfg c;4z2+igp:m zuy:ld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test chargeb0(maxkpw 73bm4arnoy ),i ck y 9f.3b. What is the direction of the electric ,)( ob y730 makp a9mcki.yb fw3rnx4bfield?

  A 5.0-C charge is 10 m from a smalaycxnoe4p,2 fum7t sr))b) ;vai6 gx3l test charge. What is the magnitude of the forceu,)gxa;oatr4 ybc xv6p) s) ife3m72 n experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C-t/oi6sp r(ui and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chargesop(ii -tu6/ sr?

  A 5.0-mC charge is placed ao -yvi q+u -c/)0 ese,ighfn1ot the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric o1, v cf iueq)0ho+gn/-esy i-field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a --l6a;lduw r*7 tgoca3 4.0 mC charge is placed at the 50 cm mark. At what w;ul6g3oadr*a- l7tc 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 /lqe *gp:n5kp= 0.20 m. What is the magnitude o5/ *nqepk lpg:f the electric field at the point midway between them?

  Three 3.0 mC charges are at the three -vk(h)kgfoh :corners of a square of side 0.50 m. The last corner is gov (hk: f-kh)occupied by a -3.0 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 5ubro zl93am,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 mC at (0, 1). What is the 59 omlz,ub r3amagnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a un4/kki twr0eb. iform electric field. What is the magnitude of kwt r/4k0i be.this electric field?

  A particle with a charge of 4.0 mC has a mas(peedkmf5 +4md hx72 8q+pr z2gqyso3s 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 0.12wefmlir /jp-19jt8 x80 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for flewpm xitj/98r-1j8it to be suspended?

  A foam ball of mass 0.150 g carries a charge of o(yztew3ju) juo082 y-2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the mag )o y8oytjju3u 0zew2(nitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Whc fi:92 x +j91xigb2ectc6qpm at is the magnitude of the electric field 5.0 c6c9ptq2+ e x9bic:ij1mg c2xf m from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What 3ru o:/fmhsdc nf67n(m 9mema z)9 8rnis the electric field 6.0 cm from the center of the sp 8anmoemf7rsnnf9: m) /crz369(udm hhere?