State the law of conservation of electrig: fihf1 2ys/ b.5nul cj3hf8zc charge.

  Is it possible for two negative charge*c518psu nztus to attract each other?

  Is it possible for a positive and a negative char; w7*t9onagr* wfqa: hge to attract each other?

  A glass rod is rubbed wigq3 lt6ega/ 4mth a piece of silk. During the process the glass rod acquires a positive charge an/mtleg g4 3qa6d the silk

  A proton carries a

  The model of the atom shows a1nb9r00oz(n1 osn ja a

  A neutral atom alwayg4 bf 9bup2 2p6wctn 7usor3u)s has

  An atom has more electrons than protons. The abi *ma+1y)zed tom is

  Materials in which the electrons are bound very tightly to the nuclei a *7fgljkbs (wvw; 2+g6oq3yutre referredj37ow+*g2;bs kwl(vfuy tg6q to as

  Materials in which the electrons are bound v9o +3auaqro h(ery loosely to the nuclei and can move about f+h uao9(raq3oreely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metaloy;l9way3o k0),dowj h.c.x v;mo.vf bar. The end of the metal bar farthest from the charged rod will be cha .9oo 3lv,k ;w.wh ym 0x;.fa)docjyovrged

  Sphere A carries a net positive charge, and m..nek c-lqi m6ihe 8g*/ui8asphere B is neutral. They are placed near each other on alihe n qeag/86.-k *i8u.m mcin insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charge 0 j e5ue:1cn*migzk8pd rod charge an electroscope positively?

  An originally neutral electroscope ike))a xm3ru-ys briefly touched with a positively charged glass rodk-a x3)e)ru ym. The electroscope

  An originally neutral electroscope is groufuqm ) rb,c*6znded briefly while a positively charged glas, cb6zmur q)*fs rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the x+q-x-2 aupw4:ttpybyf h38fn0fs ,e leaves separate. Then a negative object is brought near the electroscope, but does not tot:ff xnu w,x-+h8fp4p3 yeqy-t2sab0uch it. What happens to the leaves?

  A large negatively charged object is placeepos8 34 whxwf/t+0o xd 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 83tsh xx4 fww/po0oe+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 Coulom *o 8sle4ol ypm,ct5h-b constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thed0uf sqf9a;crn,7s5 bh4v 6 yy first charge is larger in ma arn, q u9yf 5syv0dcsh7f64b;gnitude than the second charge.

  Sphere A carries a net chati6cm40,qmw: a7jwx y rge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force bet,im ta07w6 xcj yqm:4wween them?

  Two charged objects attract each other with a certain force. If the charges ovhq f*d: nqp +e-g;gx bw+-tn7n both objects are doubled with no chanetq wh :+n-*xv7qdg+ g-fbp;nge in separation, the force between them

  Two charges are separated by a distance d and exert mutuala8z1)m bwkwd / attractive forces of F on each other. If the charges are separated by a ) wzad/b8w1 mkdistance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happey4 c.r51kr hjzqj/w 86zf )sfins to the force be1r6zkwh fq5yr8 )z jc/s 4j.fitween them if one charge is doubled, the 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 admv , 5z61 qw6kpnqvi5 distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first ele6 iqm pzdn5,k61q 5vwvctron?

  An electron and a proton are separated by a distance of 1.0 m /)ngopx3nf p). What happens to the magnitude of the force on the first electron if a secox )o)p3fn np/gnd electron is placed next to the proton?

  An electron and a proton are separated by a distance.yzja, :1snw r of 1.0 m. What happens to the size of the force on the proz.war , nyj1:ston if 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 second point)-e*qixtp1d gt om4 :o(d u,ku charge of -Q is placed at one of :,k geuxm1 )qt(*po iddo 4t-uthe 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 placed at the centroid of anv7t; k1vh sp;qsq;i26aph. h i 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 center charge due to a third charge of +Q placed at one of the othei; vq2hqi 67 a vtskhs;.1pp;hr vertices?

  Which of the following is not a vecwou1v( gctw o 5i ii(7kmc1b77tor?

  At twice the distance from a pointn.d7suzy2yct uy-;.x6 )w rc b charge, the strength of the electric field

  Is it possible to have a zeroptmihi7 sq9 9. electric field value between a negative and positive charge alt9pq 7mi 9h.isong the line joining the two charges?

  Is it possible to have a zero electric field value between two positive ch ylfv8cd8 x6wh: do*7aarges along the lineh887y6dxac f:d vl *wo joining the two charges?

  Electric field lines ne c d:b3.kcyfqt xoy*,)ar psitive point charges

  The electric field s+f u0syh rr+*xhown

  Can electric field lines intersecc+brn 3yocc/0 ok9 c+w/l;b egt in free space?

  A solid block of meta vxtrc.)ot.z:kt;i2 l js r83kl in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric .x:8;co).ski32r k tjr tztv lfield in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diam3uw-k x: vyvmpabcz)xr95:d .eters are each givenryz.kam 3d:9vp-: cbwxv x5u) the same charge, 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 where a unif9 1 zpgod h;,*lepas4aorm electric field is directed straiza4ep;*1,dpgsaoh 9l ght upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatieh8 0fl1ts8crub) a dx(;lri, c equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere tha* e(wu9sdvwkdtj69 f.t is grounded. As compared to the case without the hollow sphere, the electric field js *tv9k6wfu.(ded9w at a point directly above the hollow sphere has

State three properties of condu1/l b.vq*crcrctors in static equilibrium.

State Gauss's law.

  The charge carried by one eleooz9fgc /,j 3zctron 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 +/ ijl9h/cp xug/ h;vpxg382pj2.00 mC. How many more protons than ele xuc2/i lpg8jp h3g9 pv;//jhxctrons does this piece of plastic have?

  What is the charge on 1 kg oh,2pgbrk zo .0( 0;+gzgsbdx,frf7b yf protons?

  An atomic nucleus has a9r4*,haw56 c qzaygoc5qr /m m 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 and -4.0 / h71qe3lwe 2lcvyj+b mC, respectivjeyb+cl 17vqwl3/e2h ely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between5 3dd.o z(jyou them is 1.0 N. What is the magnitude of the secodj oo3yd5z( u.nd charge?

  Two 1.0-C charges have a force between them of 1.0 N-z0vr 9f2 bckv. How far apart are they?

  The force between a 6 1fio7 cxpjt.$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0qn3 fai. 3-uzr cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric fora3zfr3in q-u .ce between them?

  Three identical point charges ofcu wpf(u (y5(i 2.0 mC are 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. Whaf5y( (uwp cu(it are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed-3 x lom/z08hk sf.bnq on the 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 the magnitude and direction of the electrostatic force which acts on ths3nl-mk0h8/ qofxzb.e charge at the origin?

  Three point charges are located at the followingkqeu 2b:x6d9fy z(cu3 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 magnitude2u dk396(queyfxbz:c of the force on the 3.00-mC charge?

  A point charge of +Q is placed at th+gtq7t1ke:.,zg -: lencf xike 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 positive charxg-k: :ftneqgz1 kitc l, .e7+ge 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 = -1.0 nC isusac+*rv7 pe8 xh10mj at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the masa *0jve1 ph7c8uxrm+gnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q26al +fzkwja09er/x09 ; zg3ud2v qurq = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the ng;lu+ qa6 ervrd2wa0k3 u zj90/zqfx9et force on the 5.0 nC charge?

  Three identical charges ofvusvv y, a .e.krd6a2+g oe21z 3.0 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 one of thu.eogs2k,2edar 6a.1 v +zvy ve charges?

  Consider point charges of +Q and +4Q, which are separse7 h*h 4zn qeojy+l81ated by 3.0 m. At what point, on a line between the two charges, would it be possible to place e h14zoeysl*qnj7 +h8a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Whjak6vndx.7 fq q2w 5h: va2w/pere on the x-axis can a third charge be placed so the net force on qxfvnw ha/dkva65p . 2 :j72qwit is zero?

  Charge +2q is placed at the origin and charge -q is placed at ;kt 7k4 xs nvozs(i1b2x = 2a. Where can a third posikkb1z i2;s (s7 t4vxnotive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totar++p5- moriss l 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 upmjs,s- n;8mmzd l8 uf4 against the force of gravity by the attraction of a fixed proton some s84n-djmfumm ;, zsl8distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads 1kdz+(f2eoq,qsx39 cb, evd1z t.2wi0mgk lxwhich are 30 cm long. Both are given identical charges, anl2(k2emce .fz9ot0d1d+ki ,xq1vz w,gsb3 xq d 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. What is the magnitude of the xp+ n*qiqpr. 9ast ,6nk-pg9:i. yux0yd :n beelectric field at a distance of 1.0 m from th.n9tki9y6-*.qp:yx:ax pb qednnrsg ip u,0 + e nucleus?

  What are the magnitude and direction of the electric fi)0z8a 5 jfptzbeld at a distance of 1.50 mtp)8zzfaj5b 0 from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small testr6kotx 6zsx,2/ l-kxde j6 lln ag.x,: charge. What is the magnitude of the electric field at tx xl :ar/ logkk,s6e6xzn2jt6.dx,-lhe location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is th qx2zhu(m;wj:e direction of the euqz ;2x:jmh(wlectric field?

  A 5.0-C charge is 10 mbsue- -vu;)j)ktu -af from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locatio -fuuuskj;e-b)) vta-n of the test charge?

  Two point charges each have a value of 3.0 C and are separated by atz-2ng.e is,hx hkw8 , distance of 4.0 m. What is the electric field at a pos hw,nzg, t-ih.ex2 k8int midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mqvk62veyiq(qd( *a*sef 5ou3 C charge is placed at the 50 cm mark. What is the electric field a aqu5 o** feiv3( (sdy6kvq2qet the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.co) bagnx869s 5+exxb0 mC charge is placed at the 50 cm mark. At what point on a lino5nx)86cgx9 b e +bsaxe 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 nwq 112*tob uhyov:z1 = 0.20 m. What is the magnitude of the electric field1htov 1u b2:qo nz1y*w at the point midway between them?

  Three 3.0 mC charges are at the three corners of a sq y,qzzdv ( 8jxe8c e8zoydi59(uare of side 0.50 m. The last corner is occupiez98 ic5 ,zdeo8y(v8 xye(z djqd 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 pl biceg*(r+9b:sqcnm(k ,x)q ryj4mq 8aced 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 rbk ,( nys*8qgx4q+: ribccj m9eq )(m(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 is placed in a uniform electr r:3p(e5m8fc depnkc5ic field. What is the magnitude of this em5e n rkce8 cf5:p3pd(lectric field?

  A particle with a chey4z8+x r. obharge of 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 electric f92lk x(7qu5+mrq e:ad j6oftk ield of 6000 N/C pointing downward. 75 q a6ur2q dok+elt xm:9kf(jWhat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge k9egia tc ,k8c znqfi*7 ..7tkof -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of kac 8 *e7z9n ki.t.c7q,gtfikgravity. 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 magn*z gab 1kqp9h hs2.+kfitude of the electric field *gqk9z hs+a p2fb.1 kh5.0 cm from the sphere's surface?

  A metal sphere of radius 2.5s4ilj nh v3;d0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm f 4ijs3l nhvd5;rom the center of the sphere?