State the law of conservation of electric charge.ky;rtov u1, -va+d ouz+d;t,f

  Is it possible for two negative charges tod-hl, u ijb1gyyp8;(i attract each other?

  Is it possible for a positive ag suvx55rtkk s* q 85b.u+d0klnd a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Durix31 r,k5qpi):oisu dcng the process the glass rod acquires a positive charge and the 5is :i )rpo3xukcd1,q silk

  A proton carries a

  The model of the atom shok /9fiz hds9:cws a

  A neutral atom always hasi 8jn2f;iagtwxnr1ae 8:* x7m

  An atom has more electrons d2os0/mfxox:2g/ eh y.oci2l than protons. The atom is

  Materials in which the electrons are bound very tightly to 3hdkby0puzi96 :xj9athe nuclei are referre3096 d9by:h zj xakiupd to as

  Materials in which the electrons are bound very looselxclj1r7ml5 c ;y to the nuclei and can move about fre517c m xcl;lrjely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bab)h( ,o ;i1w0*vk bvpnnm nr7yr. The end of the metal bar farthest bbvnyn1ow, 0 i7p( rkv;)hmn*from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is nqu g wf.zk; 6ljrjr*l8 )gw++yeutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounyl+;q6)r8 u.gjwz f+l w*jrkgded. Which statement is correct?

  How can a negatively charged rod charge o7r(p nmy92kq z/h ovs;*-cmqan electroscope positively?

  An originally neutral eye mdt1wo kh0u /44cp.lectroscope is briefly touched with a positively charged glasud/po1y04eh c4t. kmws rod. The electroscope

  An originally neutral electr7zsl jagt;b :wo0 0ch2oscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electrosco0jo0zct:7; wsga2lbhpe

  A positive object touches a neutral electroscope, and the leaves sep8(gd6 mt+zytm/dg)fcarate. Then a negative object is brought near the electroscope, but does not touch it. tgd /y d68+)mcgzft(m What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A new;mmjhn//zz ,8e;btl utral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path followe;mh/ nt;/ 8be,mlzjwzd 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 Coulx;0r:bt:bbyugid- ddm nn*50omb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated lfgkv m3ps8) c,8 /tirby a distance d. The first charge is larger in magr3i kc/mg)pv s8,lf8t nitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. Thb3 :gzljcbc2+ey are placed near each other on an insulated table. Which statement best describes the e+ :b gj3bcc2zllectrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargermdr,, p9v;y drzhuow- , j4u,s on both objects are doubled with no change in separation, the forc -jdwm,hr,,;r uodzr,4v pu9ye between them

  Two charges are separated by a distance d and eiry3nhkst(azk: :19 j xert mutual attractive forces of F on esa3 k j:1zyr( h:itnk9ach other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attravop+0 g+x q*n,z1l9a: cwt cwxct each other with a force F. What happens to the force between 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:x+,z o+acxgw1pln9c v t0w*q to

  An electron and a proton:m j1 rtk6ihr6 are separated by a distance of 1.0 m. What happens to the magnitude of the force on themrh jr16:i 6tk 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. vfl4h9/h 9vbuwg: i3 nWhat happens to the magnitude of the force on the first electron if a secondvvfg ih /399:n4wbluh electron is placed next to the proton?

  An electron and a proton are separated by a distag(9 6jw qoot1y65bh trnce of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the oh q6g6y5wtt 1(b9jro proton?

  A point charge of +Q is planvdpa8q zi j1k-r8l n8re ko02(jq/r4ced 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 on1 lni(/ajevknr8d kp 4 8rqqzrj82 0o- 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 an equilateralfyuh2z4(*u( x3f6r /pfavjw v triangle. When a second charge of +Q is placed at one of the triangle's vertices, an elecv(a fffu puv(3yz*j w/4x 2rh6trostatic 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 /xx6b -2bzvh g xn)2rjnot a vector?

  At twice the distance from a point charge,o q+ 6thixpx9cc9qgo dy :g)pd70;x7p the strength of the electric field

  Is it possible to have a zero electric field value between a negativ 125pt z(uho v;pkmg*gw gh1p6pnt(:le and positive charge along the line join h6*21hutozwt:(vg m n;lgp(gppp1k5 ing the two charges?

  Is it possible to have a zero electric field value between two positive cha tl.g4i)e6gn qkr i2(qrges along the l te6q)ng g(ilr42ik.q ine joining the two charges?

  Electric field lines near psitive point chal6 aw7rdi8s6 zpr-)yt7zc -xm rges

  The electric field showhmfmf q;r58p1gsf1ys )xd6 x *n

  Can electric field lines intersect in freepnql2c zdzlv5u:apm(5 ,+;jh space?

  A solid block of metal in 9p6buzqr+ca 3 electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block'sr +u9baz63cpq interior.

  If a solid metal sphere and a hollow mr)wn6vw)eu1l0 h,kvz etal sphere of equal diameters are each givev0)kvz,)n u6e1hlww rn 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 reg8p1,, d9yefkvybwyy . hem21i ion where a uniform electric field is directed straight upward. What can be said concerning m12fwi9y,ebhd evy k8y. ,y1p the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chcdfoi:, + le/w4a1ng70n hpvzarge

  A positive point charge is enclosed in a hollow mo )+.mjxv f 7c8ol,wtnetallic sphere that is grounded. As compared to the case without the hollow sphere, the e )wnoof+8.jt c, 7lvxmlectric field at a point directly above the hollow sphere has

State three properties of conductors in static equiljr w-d0, us7cnibrium.

State Gauss's law.

  The charge carried by o4ye v 0gfd)5c 5clw myu.(hdc0ne 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 protons l. pwshy.e+.;fmyv.f 9 cft .pthan electrons does this piece of pcy. .pvffp..shm+f; we.yt9l lastic have?

  What is the charge on 1 kgq 0 bx:1bf zs,v2nqua. of protons?

  An atomic nucleus has a /u lq,4i ee;uecharge 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 mC, rio, m n-jsmvgk-4g5sz*5el *s espvss omkg5i 5n -gz,jse*-4m *lectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a seconn;r0 bdj,fa a.d charge, and the force between them is 1.0 N. What is the magnitude of theajr ,0adf n;b. second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?w; kv /(/1lk,z0b .t cvrtpjkr

  The force between a twew9/2t j 90s-v ema(aqey*a $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience +l 6rx-xj wgb.a 1.0-N force. If they are moved to axxr ljgw.b+ -6 new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of w s.l q.bo2q5l2.0 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. What are the magnitude and direction of the electrostatic force which acts on the charge at the o2lloq bsw 5..qrigin?

  Three point charges are placed on the x-axis. A charge of b0iw9p*y9oz h *22zitslu w8y +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. Whiy9uz s0owb2p *yi 9*ztw8 lh2at 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 positic ,vp33yqn)i w1a rh)uons: Q1 = 2.00 mC at x = 1q3a i)hcv13)ynpru ,w.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 on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second pointow- mqzf)a h08 charge of -Q is placed at the upper-left corner. It is observed thatwfo0z a)m-q h8 an electrostatic force of 2.0 N acts on the positive charge 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 is at (0, 0.10 m); Q3 = q- lcje 6ce+r05.0 nC is at (0, 0)qj+-ce0 erlc 6. 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 at5 : jc6 v;kkezbg2v6pfo6v mb7 (0, 0.10 m); Q3 = 5.0 nC is at (0, gmz 6kf6c: o5e26vvb7kjbpv;0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are pjxn(*zl pb71:q: 0s6pdqycw ulaced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude pqnq6 uyw j:zx(sb70c1lp*d: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. mo;4dv 3:q )*p fs;jywpd*fzi At what point, on a line between the two charges, woq vp)d3zs if4pyd*wm j; :o*f;uld it be possible to place a 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. Where ostf0u(*rydv7 2 t gbcy4s wn,.n the x-axis can a third charge be placed so the n(ytts*c.rf2 vun ys0 4,b7dwget force on it is zero?

  Charge +2q is placed at the origi6 c0-y2wrjaq dx1jrc2dpv3 6fn and charge -q is placed at x = 2a. Where can a third positive charge +q be placed rvwpfd2j36 cr6 j1dxa0yq c2 -so that the force on it is zero?

  A copper penny has a mass of 3.0 g.x(h3x(t o g*gcv9 fpn3uvri5c 1(3u )r+pj ksa 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 attracte ojdg wr71*g:ion of a fixed proton some distance above it. How far abooeggw*7rd j1 :ve the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncoup vbs;ju0/ac rkr 13t-nf47wnducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until thap0kw-1 b3su j4t/nr c 7urf;ve 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 s4zx x.- catoi w0za f7)v0o(pmagnitude of the electric field at a distance of 1.0 m from the nucleuscaz-os. (pi70)wfvox0t4 ax z ?

  What are the magnitude and direction of the electric field at a dism*+o k uei+msz- j9y*0xs f.extance of 1.50 m from a 50.0-ns0xkmy*x-s e ozm.ij f +eu*9+C charge?

  A 5.0-C charge is 10 m from a sfz 0+ 9z./h te+ydujhz o samp6()w6ommall test charge. What is the magnitude of the electric field at the location of the test chargu e of9mha6d+6s0t+zz.)/ zhypjw(ome?

  A 5.0-C charge is 10 m from a small t0jne76t,ru pot c/;qdest charge. What is the direction of the electd; p/j6coq 7r,n tt0ueric field?

  A 5.0-C charge is 10 m fr,qp;vgn e) 3 gd4mdud:om a small test charge. What is the magnitude of the force experienced by a 1.0 nC chargve 4u:mdgg;p) n q3dd,e placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a diapaa3ln 9 m+9ke o7( wb(hwzt7stance of 4.0 m. What is the electric field at a point midway between+oa e7 whm9wan az9(t7bl (p3k the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of qa zc5(r(nu ch1:w- 9kwg g:vza meter stick and a -4.0 mC charge is placewz9- :uh:n(wg zcvrck (q5ga 1d 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 stick and a -4.0 m/nu gw0;)ig -9nno1; yejjd qaC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field 1g;oeadg /qnyi -;n)jw0j9nuzero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. Wh7mmcx+ 1i rmjeu6eenb:5 a8,xat is the magnitude of the electric field at the point midway betw+m,ac7rmnu xe:6b8ei5ej1m x een them?

  Three 3.0 mC charges are at the,dx. x6k6gdg e three corners of a square of side 0.50 m. The last corner is occupied bykd,6.eg dgx6x 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 u y(x2sk+qs *zzfu)if77qrmje6 )u 9zplaced at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (f) 7* )qx zez+69uu(fiz u2j7yskmq rs1, 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 5.0 mC when it is placed in a unifor 1ce oautn:j/dbp,6,ld r c3m-m electric field. What is the magnmucd: o3lac6trn,- b,/ed j p1itude of this electric field?

  A particle with a charge of 4.0 mC has a ;*)w k lbwg;tvmass 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 int*t+ 7n;ddrzmq9fd3p an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be sudqtd*fzn tp 7m d3+9;rspended?

  A foam ball of mass 0.150 g carjo )lhn7p(h/ie+ 7ss cries a charge of -2.00 nC. The ball is placed inside ai(oh)s+ jhlc/sn7 7ep uniform electric field, and is suspended against the force of gravity. 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 maq mhbx9n0ah 1ox2hpe h.x5 ,c9gnitude of the electric field 5.0 cm from the sphere's surface? n2xcxah .9,q1h9m be5hxph0o

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mx 7zx(zh1l:o pC. What is the electric field 6.0 cm f(1 p zl7zxoh:xrom the center of the sphere?