State the law of conservatio4l7f ;aa ng.tvn of electric charge.

  Is it possible for two neg7fv nb;udt l8 k.p-off;* fjovz:ik: ;ative charges to attract each other?

  Is it possible for a positivx- y2ti rli3,c;az 8xce and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glatzvr; i86vbx7 ss rod acquires a positive c7v8ti ;zx6 brvharge and the silk

  A proton carries a

  The model of the atofw d,u59 d/l ko),rcv yq5g.bpm shows a

  A neutral atom always2ql2zx1tt, y e:*tjy w has

  An atom has more elecxs32 9simzc(y ez:v+rtrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nucleitwsr8f8 5(ot o3y. ewd are referred o 5drw3.e y8f ostt(w8to as

  Materials in which the electrons are bound ut 0s*yym1z8j 9/ kkguvery loosely to the nuclei and can move about freely within the material are referrek9*ug/t zs8uy y0 1mjkd to as

  A negatively charged rod is brought near one end of an un9iy xs4ntl:5+/ m e d4j)qyjjmcharged metal bar. The end of the metal bar farthest from the charged rod will j9my+qljtij y /44 5nx)dsm:ebe charged

  Sphere A carries a net positive c uy37gaqys c02harge, and sphere B is neutral. They are placed near each other on an iqc 2yus03g a7ynsulated 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 posq nt7zu6tgk8cvcpcb f zs ;v1x06p7) /itively?

  An originally neutral electroscope iioz4xu f7g a0(s briefly touched with a positively charged glass rod. The elxgao u (f7zi04ectroscope

  An originally neutral electroscope is grounded briefly while a po 1 iehrvrkgji-2n i78.sitively charged glass rod is held near it. After the glass rod is removed, the e ei -ii 1hn2.jrvrg87klectroscope

  A positive object toucheka5 8qmv5nd2ondi0 v; s a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What hapa82 5vd d 0kin5q;nvompens to the leaves?

  A large negatively charged objx. *;zgba hu( 1fhkdt3ect 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, a3*kuz f;ab .hdg h1(txnd 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 of1, hhg0fw)c2f9c+ kmdeo+ehe;bod 7l the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects arep+aqnn 5g)ja1 separated by a distance d. The first charge is larger in magnitude than the second cha1 jp )ng+q5anarge.

  Sphere A carries a net charge and sphere B is neutral. They ark2ub ljiy;b 8,e placed near each other on an insulated table. Which statement k uyjb,;2bl 8ibest describes the electrostatic force between them?

  Two charged objects attract each other with a certain force858)hnex7hx2)wyjism r 1tx n. If the charges on both objects are doubled with no change in separation, the forw85r2jh1 my )hes7 t 8xnx)xince between them

  Two charges are separated by a distance d and exert mutual aei52bp;,vr7tpvkem ot ,+ m 2ettractive forces of F on each other. If the charges are separaimmp tt,ov 2;+5,7 v2pbere keted by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with gh12d kau u)m:a force F. What happens to the force betwee :hu2ag)km1du n 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 u/l r;k2a3agheu :-by4 ne8/ w qc5ghkby a distance of 1.0 m. What happens to the2b/u/lr-q4w k:ahhekyna5gce;u 8g3 magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are sepbv o*6h3z da*xarated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second vdb zxa*6o3* helectron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What h5 :ntbez ccf,)gi( z1g0t /wobappens to the sio:(/0cg 1f, ebwt )znz 5tbgcize of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squarq; xu4n/ 0oylge. 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 ma;gl 0qnu4 x/yognitude of the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at 0g-wc/y (4l(tyisllf the centroid of an equilateral triangle. When a syly isw/-fg(lt(l c 04econd 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 other vertices?

  Which of the following is not a vectorbg9k4b rdx563 fqf(3ai h,mlnck( uy;?

  At twice the distance from a point charge, the stmb6/ it7lb6cid6d 5sxrength of the electric field

  Is it possible to have a zero electric field value between a negai63 +bxxw9v(ztp l ru.tive and positive charge along the lilw3u 6+vi(xxbr.ztp9 ne joining the two charges?

  Is it possible to have a xs8 vf32vvzp tk e;-,yzero electric field value between two positive charges along the line joining8s3,z2e t k-v;yfvxvp the two charges?

  Electric field lines near psitive point cd7 va 2dxl0v6:z3njeqharges

  The electric field shownmt3bf75v.cc.)p inlq+; dpsb

  Can electric field lines interse:s5t;xi q7-d ; skalywct in free space?

  A solid block of metal in electrostatic equilibrium is zo09e)+s2gtv/.spuzm pcs cezq*7e1 3i rra .placed in a uniform electric field. Give a statement concerning the electric field in the blvq7u2g+cp.iepmzrecrss zs3t* 1./ ez0ao9) ock's interior.

  If a solid metal sphere and a hollow metal sphere of equal diame9yr y6 p7bmtea .+bpo1 y2k:uxters are each given the same charge, the electric field (E) midway between the center and the sur.x +7ubpe try6ymo2y:p9ak1bface is

  A cubic block of aluminum rests on a wooden tabk0mcoa*5,fx uw miw8 rcp( 07lle in a region where a uniform electric field is directed straight upward. What(u70 m0* wlpicx ,fw8omkrc5a can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilil/s+1x )ys5 q3zpa.(zx lgrz nbrium near an electric charge

  A positive point charge is enclosed in a hollow metal lcst+q 9:v:foajo-6hlic sphere that is grounded. As compared to the case without the hollow t:a+j 9o vs6 q:olfhc-sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in u yf4mz0s 4anwc )88+,zmin jkstatic equilibrium.

State Gauss's law.

  The charge carried by +q3q6hg. shg tone 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 rdmn ju958 :9kkqum)l+2.00 mC. How many more protons than electru899n)ujmk q 5ldm:krons does this piece of plastic have?

  What is the charge on 1 kg of protoob q5 q;del(2 3bg0*uj jdv r5k.sca9zns?

  An atomic nucleus has a c8+h (coglx ru*harge 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, ha(s8fblfm qe*hh t5rit95g5 j +ve charge values of 2.0 and -4.0 mC, respectively. What is the magnitgjfe+lts qb(5h 9m 5*hf 58itrude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the ftqf 1:;2pe rldorce between them is 1.0 N. What is the magnitude of the second charg2:qerl p; 1dtfe?

  Two 1.0-C charges have a force between them of1h 72alucqf,b 1.0 N. How far apart are they?

  The force between a 9m+hsf -o t 4vzxqo8c($30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience lp. xc8g dbfm8y+er4 5a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the r cd+lpb58e4.8gyf mx electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cu5f (./fqsl+5gm lfqehar(fgl 5qsule/m+ f.q5fge 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 at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 msifz9t *w71)qo o7ce;mh/ddh C is placed at the or9m7)f1 qsotizhd7c *he/ ;dwo igin, -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 at the origin?

  Three point charges are located-+t)(f q ozucx: 0r8jsg1cvdr at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x -8 1cugvzxsfqr :od()0cjtr += 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 a o9fwse( 3e 3k ,))etyz/v xdnvsquare, 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 thesewnof/, k3y)vev )3(9xe tdz 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 is at (0, 0.10 m); Q3 = 5.0 nC is atlfmnmw9wmvbr3 4z 0 0a2 kvvqlvd5;)0f l9/rt (0, 0). What is the magnitude of the net force on the 5.0 nC chargeqb5l /9rfa k4l;w0z3r 2 vvmm d)09m0vwlv fnt?

  Q1 = 6.0 nC is at (0.30 m, 0)l/ii x9 zj:iq(w7lihawgm,5 3; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is /7iwg3(9wailm qi,zj5 : hilxthe direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of ; jpz*(nf rlgf5x p-r-an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts onpn-j f-g p(f;5r*zrl x any one of the charges?

  Consider point charges ofs1nt e4x .6+p)4gcdf1r ybzwr +Q and +4Q, which 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 apde . y4b+cf1)x1nsrzrwt4 6gcting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is ;9lafc +n vv-,jxqvs*at x = 4.0 m. Where on the x-axis s9c+,vj-vn l v* fqx;acan a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and ch -o7gmm4a a6exq+,*bs y)trm harge -q is placed at x = 2a. Where can a third positive charge +q berm7m6s hb*a o,4emtyqg-ax+ ) placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of/oo szfb/ol bn u)cp1 *r).hc r4dz.x. $4.0 \times 10^{12} \; electrons$ 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 oq bk3x t3/tg qs;liulo;5 7bq8f gravity by the attraction of a fixed proton some distance above ig/8qlqt ;33soi;lu7bxt5b kq t. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common potq5v 6j4fzzt9int by nonconducting threads which are 3 5q6fjvzt9 z4t0 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. What is the magnitude of the )/qtbuvh::p ,vz(adlr m+ic7electric field at a distance of 1.0 m from c rh::v/d+vqm i)a,lzbt7p(u the nucleus?

  What are the magnitude and direction of the electric fjvj2oc*kl0raia* 9wbvx v10, ield at a distance of 1.50 m fr2v0o1rvijc ja ,ak 9wl*vb0*xom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of (s,ipsa5 )mnjq0 tt v-the electric field at the i ssmp,(a v )n05qttj-location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directiong gc0+ gaojmpxbn+/jfw-5:0ry3 k(da of the elc /g(oyfmag 0n+w+0d jjk3bp xg- 5:raectric field?

  A 5.0-C charge is 10 m from a small l t,sv.f32seik8/z bo,j aokp+;)bc mtest charge. What is the magnitude of the forc 32bopas8l)iz+ vs. bj,oe /mf,;kt cke 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 and are sc7 ,ijux.3duvb:t2yy m97 sqzeparated by a distance of 4.0 m. What is the electric fb qstuy yv9di3 jc 2,x7.:z7muield at a point midway between the two charges?

  A 5.0-mC charge is placed - z l2cesj)x;edmxb c4er.*ut)yc+ . tat the 0 cm mark of a meter stick and a -4.0 mC charge is placed at c+;tc ese te*..) mur bycx dl4xj2z-)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 m+a;fql, q lo1uark of a meter stick and a -4.0 mC charge is placed at the 50 cm mqlaoqul1,+ f; ark. 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 ankq2alm+il95og0pv5.xmx fr bdu 3p+/d x = 0.20 m. What ispm+ gbm5 ui5ro fx2k.0 vpxld+/a9l3 q the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squarz00x vzs j11/n yw0ai62ejlvf e of side 0.50 m. The last corner is occupied by a -3. vavj 1/0f601zei wly20nz jsx0 mC charge. Find the electric field at the center of the square.

  Consider a square whas /v.nr1jim) ich is 1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 m /anvis)1 mjr.C at (1, 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 a charge of 5.(*dga5*c z rzs0,m7 xf,th kwc0 mC when it is placed in a uniform electric field. What is the mam(x,tgh0, 7k*d s5fzc*cwra zgnitude of this electric field?

  A particle with a charge of 4. kad56.qztoa1 c.rmfr2th+)m0 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 ele0q uyz(81ib 7.dkxoi ectric field of 6000 N/C pointing downwarz 8e1du7ib.yxqok(i0 d. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g 4pux-f0idslk: 2l oz -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 ar20x--du: fsol lz pi4ke the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is o7(jl4oa1ujf ;ggx ,,s dwho 0the magnitude of the electric field 5.0 cm from the sphere's surfa;xuj,o,jg7 oh d1(sf gw4a0 olce?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the pcnksw.9uw2ns 1cn*9 electric field 6.0 cm 2c9.kc 1pnw*9nsnwus from the center of the sphere?