State the law of conservation of electric charge0j.9 b i.lf5 mo g.ga)u:saepj.

  Is it possible for two negative ch; vqu+ars(z5.csa / gxarges to attract each other?

  Is it possible for a positive and a negative charge to o4;n0e;:hrdjyo- p lfattract each other?

  A glass rod is rubbed with a piece of silk. During the process thy9dpnaa y4t(+mj h zic41r4 s4e glass rod acquires a positive charge and the siny4p9a4 (mtrdz+j 4asc1hy4ilk

  A proton carries a

  The model of the atom showsm+ 7l3uxp:yyj a

  A neutral atom always hasasn- zya/:5vp

  An atom has more electronqms9; i v c ,-vec*rfg a0z6wt)ir3v1rs than protons. The atom is

  Materials in which the electrons are bound very tightly kab( fq2u*ly*vid ied4( 2m )uto the nuclei are referred to ayfe vb(d ui24m2)(alui*qd k*s

  Materials in which the electrons are bound very loosely to the nucldi5 tv4w9f6paei and can move about freely within the wfv45 ita69p dmaterial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. k1my9+d ijqin oxym47+,9m sxThe end of the metal bar farthest from the charged rod will be chargim+d4,m y1i9 xjx 9y+kqm7ons ed

  Sphere A carries a net positive cha dlc)6feeuvx:m8ab3 4rge, and sphere B is neutral. They are placed near each other e4d3c)8vme6axlu : f bon 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 an electroscope piupa.v6 5jw, sositively?

  An originally neutral electrfsht,s5g nd:60r ix4boscope is briefly touched with a positively charged glass rod. Th:xn,b56g0 hsit r4sdf e electroscope

  An originally neutral electroscope icn7s o*n8 n7ams grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, thenn a m7soc*n87 electroscope

  A positive object touches a neutral electroscope, and the leaves separate.my5 a l..ewo*0lx ygf0 Then aalw005f xoyy.* gm e.l negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tab:pvccv zg01eip4u j -.le. A neutral metallic c0cpi.z-v4: 1g e pvjuball 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 charge on each ball?

  Charge is

  What are the units of the Coulomb m5l9ieo u04 roconstant $k$, which appears in Coulomb's law?

  Two charged objects arnv l8m (z9s 4uj0l8pjie separated by a distance d. The first charge is larger in magnitude than the secjnupm4l8i l 9s0v(z8jond charge.

  Sphere A carries a net charge and sphbd1.hl vtb 54zere B is neutral. They are placed near each other on ab5 bht14 zv.ldn insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the cb*lmx 3a4ti2 jv u(b+f/yvp :hharges on both objects are doubled with nom/f2pxt3ia y vub:(hb 4jv +l* change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces ofhc )ap78f (cgbfp) 4ic F on each other. If the charges are separated by a distance of d/3, what are the new m(gi f)4bph f7)accpc8utual forces?

  Two charged objects attract each other with a force F. What happens to 6jha,ujf 8+e3l k,fngthe force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is rej,+e kha6n, g 3julff8duced to one-fourth its original value? The force is now equal to

  An electron and a proton are qfydx+wpfb1-x2a(bclhh 67 .separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a seconxydh2wb (qxf+ alc h1pfb7.6-d electron is placed next to the first electron?

  An electron and a proton are separated by a distanca si:.brlft9d4 zgnzn0 6;-mqe of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is pla z-is 4fm9;ga.n 6 rl0bndtzq:ced next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Why / (mzbapgzu4+ b8o3voc1m u(at happens to the size of the force on the proton mz z8+ocab4u ( u/b13yo vg(pmif 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 a secor/2xc7gu v h ybnv:- p 2yse.j-qi3)zrnd 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 electj:2h-g3b2/xcive y) ynzr prvus-7.q rostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilate8h 3ritt) m6d h3.uxxzral triangle. When a second charge of +Q is placed ati)zuh6txh 3d t m8.r3x 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 center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vec ic1ymf,w3 9v4-mca+,rejl tgtor?

  At twice the distance from a point charge, the stre8 yifrw1cixd t+u6vx+3ky 2,ungth of the electric field

  Is it possible to have a zero electric field value between ryl0;) soixx /a negative and positive cha ylrx/)x0i o;srge along the line joining the two charges?

  Is it possible to have a zero electric fieldh1c / sfgbavh xp01p p,9xp z:fb2us9) value between two positive charges along the line joining th,up2pph 0g/fxv11f)ah 9c9xsbpb s:ze two charges?

  Electric field lines near psitive point charg7yzt9et/,wz9 s+ dpqs es

  The electric field shown d7m o 6qn eca .x.zjsry;;e4j.

  Can electric field lineswvwb9c -:a lnt j6(-3xuq 3rso intersect in free space?

  A solid block of meta:fqu(95tc-gmkd6 4ezye u u(nl in electrostatic equilibrium is placed in a uniform electric fiel - k54 cydmtu(eqgnuuez6 f:9(d. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal d2/l;huaswd m 4iameters are each given the same cha 2ah;4l/w dsmurge, 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 c4y*/nom ojry/d i;vm41 b e0awhere a uniform electric field is directed straight upward. What can be said concerning the charge on the*me0i4v mo41/yj/ndb;yor ac block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charge; 2ucqckd 8q5v3sf3bx/ bfj 1s

  A positive point charge is enclos32kp 0h+ *exzxszet 4red in a hollow metallic sphere that is grounded. A x3+zrk2e p0xhz *t4ess compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equio/s5j3bm pk cutb)x0*librium.

State Gauss's law.

  The charge carried by one electron i -y4zsy3lnwg- s $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge 1 6acy2bteno 8of +2.00 mC. How many more protons than electrons dcy128abe 6otnoes this piece of plastic have?

  What is the charge on 1 r7-n8 6mqe zibkg of protons?

  An atomic nucleus has a charge:ogmid;8 ebkk 2pu) q5 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, f,99 vee8bi) zv xcd .q2w/vrbhave charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the elv) 8b99wfr xic, /e2vev.dbqz ectric force between them?

  A 1.0-C charge is 15uol ad 8t9yyob6jan j(e4 (;m, m from a second charge, and the force between them is 1.0 N. What is the magnitude of ad,ja8e6yj49lb oy;(m (t uno the second charge?

  Two 1.0-C charges have a ffigh248k tx/ morce between them of 1.0 N. How far apart are they?

  The force between a 6rgm;p.b -u 7lcb6s hh$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cohf10*c p0oj ,k0pcwrm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betweenc0,0hf*1ko p 0j worpc them?

  Three identical point charges of 2.0 mC afrw )rzxp+6j2j .0gxore 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 on the charge atj j+xfor.)xzw2 0p6gr the origin?

  Three point charges are placed on the x-axi9m(phj8qf u o82 1esias. A charge of +2.0 mC is placed at the origin, -2.0 m C to the r j poa2(q1sfm9i8u 8ehight 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 are located at the following positions: Q1 = 2.00 - qpxc5qcm zg h-c.w06mC 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 the force.cw z5-qmch-0x6c qp g on the 3.00-mC charge?

  A point charge of +Q is placed at the center2n 9mlice/2gh 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 on2l/e2cngi hm9 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 =,gbqy;jg3+opnx j 39z q-vm;q -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). q-pnx3zo;jy j,g b 9v+g;3qmq What is the 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 ;vziw6h*cq/b.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC cc w/q*v b6z;hiharge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatkg 7: 5mw1spjp vir:x4eral triangle which measures 30 cm on a side. What is the magnitude of the electx r5vmgsj::ipwp17k 4rostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whic;r63 lz-6mvl+ftd qyah 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 electrostatic force actztf y-6rqd63+;mlv laing on it would be zero?

  A +3.0-C charge is at the origin and a +ix3 t1+hv dhq49.0-C charge is at x = 4.0 m. Where on the x-axis v34q h1d+hixt can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. u1r/ +1l,dfawndfgnb 7p+g 0jnl8 8;qmqq(riWhere can a third positive charge +q be placed so that gm+( a ,7 fqbdq81;dqn1+fn8w lpn giu/r0rjl the force on it is zero?

  A copper penny has a marg- 0 )re2c nb/kuze;ass 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 forcez),( xwex m3,nr(8cdkbec .hc of gravity by the attraction of a fixed pcc)ex,,rm.wch k (8xezndb(3roton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting7b:o(.j2ebges zat6 7 *rlhgd threads which are 30 cm long. Both are given identical charges, and the electrostatic r bgtgo6bl(e77 azjh e.d*2 s: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 electlqome clu ;a7g3ko 4.qs4m(s7ric field at a distance of 1.0 m from the nucleuqqms74g4o;sula e m3l .cko( 7s?

  What are the magnitude and di.:og1dwz h1 hjqlkwf)y r :4q7rection of the electric field at a distance of 1.50 m from a 50.0-nC fh47:1rh1)ozqj:kdgw w l qy.charge?

  A 5.0-C charge is 10 m from a small test charge. t+q k5eud)3-r x3; nkzlyc1ix What is the magnitude of the electric field at the locattq+und e k 3-3k1) x5lyicrxz;ion of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is tr 9uboa)8m1rfhe direction of the electric b98ufraorm 1)field?

  A 5.0-C charge is 10 m from a small test chz vwhum72hx9m qz( ole** )+fuarge. What is the magnitude of the force experienced by a 1.0 nC charge plzf+hw *)eh*qoxm2mu lu z 79(vaced at the location of the test charge?

  Two point charges each-ioe2gew f n+ xua mngp99q7r/bc4)4 l have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point mepi gg42-9em4o/wl+9n )uarcfnxb7q idway between the two charges?

  A 5.0-mC charge is placed at the 0 0y (ahgb eamace1; gnh :i.vph8)9ps4:uf5 rocm mark of a meter stick and a -4.0 mC charge ic )e ab vhfeps5gm:ahh:un;iy4.81g p o0a9r( s placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter styso eb5p0 /s*oick 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 electric fso5 p /0beo*syield zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0al -q i(ol9j3l.20 m. What is the magnitude of the electric f li(l-39laqjo ield at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The 5 9du:ivru +qlf(xuv4last corner is occupied by a -3.0 mC charge. Find the electric field f9xui u4+u(vq5: ldr vat the center of the square.

  Consider a square which is 1.0h9.f+ k7 i4f* fla(ysv/s gtje 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 mC at (0, 1). What is the magnitude of the electrh+9sakfs(/tfjf ei4 . g y7*lvic field at the square's center?

  A force of 10 N acts on a nm6z6jrhwkr, -9ck 6ncharge of 5.0 mC when it is placed in a uniform electric field 6 6nkm6kc9n jr,wz-hr. What is the magnitude of this electric field?

  A particle with a charge owe,f k*q3 fg6pf 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 atxk mnxm:w 3,7n electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspende nm7m:3 w,xtxkd?

  A foam ball of mass (bv v5 5zfeke80.150 g carries a 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 electric5v ezb(ek58 vf field?

  A metal sphere of rakp7 rn 5qrfj90dius 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the spher 5nkj 7f0qr9pre's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What m6va+b(nt:oz +xsml 9s;g0n gis the electric field 6.0 cm from the center otbnln: 0+6omx;+ss 9mz a(g vgf the sphere?