State the law of conservation of electricc 3lzp8n hf cbl ygnr6v(-2/mo::qbs5 charge.

  Is it possible for two negative charges to attract each (tnumhg -mt9 ht4u72l other?

  Is it possible for a posio/ 6/-fsl2ih7pmrijg2j :sket: hyt0tive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass nug2uz) z 87cjrod acquires7ngu8zu)z2 j c a positive charge and the silk

  A proton carries a

  The model of the atom.:jcyu 6a8 bru shows a

  A neutral atom always h (n4cn9smol+k as

  An atom has more electrons than b.4v7 ty7jum xgt y0t/protons. The atom is

  Materials in which the electrons are bound ver5) v67myk apgxy tightly to the nuclei are referred to g567)ky pm xavas

  Materials in which the electrons are bound very loosely to the nuclei and -3 (zgae w 4gt:)ezfdtcan move about free4d(te:e)a- wgfzt3 zgly within the material are referred to as

  A negatively charged rod is brought near one end of a1b/82aq qy .pa6f ohdun uncharged metal bar. The end of the metal bar farthest from the charged rod wf6. 2aq/oyp8u1 hdaqb ill be charged

  Sphere A carries a net positive charge, and sphere B is neut,ba. +hvai)ffral. They are placed near ea ,a.iab v+f)fhch other on 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 electroscb/ 2q1 9lamu5h wz;fse6,ywhdope positively?

  An originally neutral electroscop k2fon0*:q6ktamr4f ue is briefly touched with a positively charged glass rod. The elec4 mo6rkt f2*a0fku qn:troscope

  An originally neutral electroscope is grounded briefly while a ip ;t)a aih47hpositively charged glass rod is held near it. After th)7ihathi4;p ae glass rod is removed, the electroscope

  A positive object touches a neutramxk (f*q/ 4wqr-z w;ovl electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does *w 4k(o;w- /qfz mrvqxnot touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated t15iyzr, kp)hnlpp) w4 0cz tcex6c;7oable. 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 thenpx4zp;1 l ziow) kret7)chc pcy0 5,6 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 zt1ce)nnhw4/+u*a 8, p xeua 8nmif/hconstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The m vklb64b28kav zop/*first charge is larger in magnitude than the second c av*62m8olvbz /bp4kkharge.

  Sphere A carries a net charge v dke2q2m1 9qeand sphere B is neutral. They are placed near each other on an insula qme ek9q2dv12ted table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with apua ;wd /lqk2 *(2(i7tikc4sg9c i dmk certain force. If the charges on both objects are wgk p* ik4d(;2(u7tqca/ dlis9 ikmc2doubled with no change in separation, the force between them

  Two charges are separated by a distance d t5kj,(uawq 5 xand exert mutual attractive forces of F on each other. If the charges are separated b,xtqa5 ujw5k(y a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What ax-t9l* za3ub happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their ce a9baxl* zt-3unters is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated movswe;zpfz*v4p+ ;)by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed ;v* ep4fo)z pvm;+swznext to the first electron?

  An electron and a proton are i4b8mvo0vv zl 5ugz7(separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a secu7vz4og5(im8v0bv lzond electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 fo46( 91+zut,ts r0w0b0whqwtyiv dobdt+0 em. What happens to the size of the force on 01yostwzd4i0 +0ortet6, tqb + fwhv(0uw b9d 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 3 qulkm52ecm9 x8yl+jl6qu5nsquare. 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 centk j5c l62m xlqe5qu39 my+ln8uer. 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 nq9ol )jt.8.m bt3z/qlxx u6n placed at the centroid of an 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 magnitude68qtx.b jtulonm/ nz x .q)l93 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 vector?jcgn7pld f/c;fbzkg( r ;g6/ 7kvbq( (

  At twice the distance from a point charge, the strength of the electzph br/.5pd/*zq.v s 0rpl5b gric field

  Is it possible to have a zero electruf:ik rrjm,ylq:b7r 30+-dsi ic field value between a negative and positive charge alon:umlrkf bdi ,7s-:ryi0+r3 qjg the line joining the two charges?

  Is it possible to have a zero electric field value between two positive lqgdcqwxkd+ zy b,+ygrmc8 -.9wy0 3;charges along the ;8+r, wyg.yzxcd c0d q+9-k lgmby3q wline joining the two charges?

  Electric field lines near psitiv0c8g ciljsy5n lwf8.n 8ogub 0k ;9 kyh1a(c(me point charges

  The electric field shown hrog eo)d81c 6

  Can electric field lines interse/rlzmjv04 wwh4 qdc,o*o;1id ct in free space?

  A solid block of metal in electrostatic equilibriuao1u 5i r+j 1o1e2uijsm is placed in a uniform electric field. Give a 1r +s eoj151ju2uoiaistatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gi zx h3b6kbps:1+av xe:ven the same charge, the electric field (E) midway between the centeb1e: 6ah sz+x:kxbpv3r and the surface is

  A cubic block of aluminum rests on a wooden table in a region 2/pbona 0hsu .where a uniform electric field is directed straight upward. What can be said concerning the charge on/p.0 u2bno has the block's top surface?

  If a conductor is in electrostatic equilibrium near an e:pqeq3x8ufnr k7 ,o r-hia/wwpt f 9)2lectric charge

  A positive point chargyf fplg: h3f2t -r(6ofe is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hol3 :r 6 y(ltf2ofgf-hpflow sphere, the electric field at a point directly above the hollow sphere has

State three properties of ue*t0j(x2b5o d b)hj zconductors in static equilibrium.

State Gauss's law.

  The charge carried by one k+4nvrl +bmgoa17 bl4electron 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 1)h- -m/weum- 0 7tuooyvbmofof +2.00 mC. How many more protons than electrons does -1u m0y-bfw eo7-)u v/oohmmtthis piece of plastic have?

  What is the charge onvjdot6z6oi15g /(e s )wfl l1* gfcub5 1 kg of protons?

  An atomic nucleus has acm7 xt+nq wm(./oqc;d 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 -6 6i+edt(5y y90wbr uko g9(ayotb 3ly3g4mx i4.0 mC, respectively. What is the magnio( (e9 6mbri6b9k0guwxyiy3 3tag+oty5y4 ldtude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is/,c laorvu1bc)0ci6 bpvv;+w 1.0 N. What is the magnitude of the second charg;p /v+l1c0v,c cu oab v)iwr6be?

  Two 1.0-C charges have a force between them of 1.0 N. How far apartc s.m+,90hsqyo,s tzt are they?

  The force between a 90hctl gddf +8$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, i 1jgwoc bl po5g2s7 66ewl93fgnitially 2.0 cm apart, experience a 1.0-N force. If they are moved 9pc6o3f lwj6s7ge g15 gbo wl2to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cpl-rk(681oq9 w kuhx9zgha1 f; kh;kuharge is at the orflko ;qhuw hk(h9x6 zgr1;k91 8p-kuaigin, 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 plmz 6xv:k-lj +jaced 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 jvz+x-lk: 6mjforce which acts on the charge at the origin?

  Three point charges are locatekd tlnv,y1)ebb12lo)e)w 2 am d at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -e l)dy2lto w2vm, 1)kab neb)15.00 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 of7xv*xhptb7lg x6 01cu 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 uc bx7v 10 *h7tp6lxgxacts 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); r:3mu*ag ctr5 vd6do( Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnituc g3a (vmd*t ur6rd:5ode 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 = 5.0 nC m)l*gi*hvsi )eg5 f:2,dqh3fsxq) jbis at (0, 0). What is the direction of the net force on the 5.0 nC chargq)xh*v,d3b g*f )l g mj 52i):sesqfihe?

  Three identical charges of 3.0 mC are placed at the xhisj 6ylw gn;s 7(:6bvertices of an equilateral triangle which 6g:w7;xnlisj b y( 6hsmeasures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which aruyow0 v1 (6/ie1dzzroe 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 acting onuewy o/z 01od1v zi(6r 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 okt25w q+ija28 w xj a5tp+e eu;0rv3yjn the x-axis can a th3tjti wea+ 5x520pkyvjure8+aw2 jq;ird charge be placed so the net force on it is zero?

  Charge +2q is placed* o: e0cgu0cznpr3bz( at the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so 0* c0eur pb3zz gcno:(that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totacv ig .0vsu(iwq*w11q1ph c.v 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 up against the force of gravi5j6q8t d wg(kcty by the attraction of a fixed proton some distance above it. How far above the electron is thtc6d(w q58kg je proton?

  Two 0.20-g metal sphjxfacog 7k7,vl4og ( 8eres are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them aparo7ocf74v(l 8,g xag jkt 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 magni.jeu3 h do+pq b-id.lwdpt5 wr4c5g5-tude of the electric field at a distance of 1.0 m from the jddi4 le o+w.wp 3-h5 rq -5tbuc5pg.dnucleus?

  What are the magnitude and direction of the l 5f w/euzc4d,electric field at a distance of 1.50 m from a 50.0-nC e/fdzl5c,4 wu charge?

  A 5.0-C charge is 10 m from a small test charge. What is th)+ jrzzku3j)yb5f fy1e magnitude of the electric fieldfy53zrj ))kbfju yz+1 at the location of the test charge?

  A 5.0-C charge is 10 sz;c.eo9g8(tz0wvtt n*mi +l m from a small test charge. What is the direction of the electric field?ozvi.c+(z9tme gnl8 s w ;t0t*

  A 5.0-C charge is 10 m from a small tes/wkwg/yi(* vpo v9o,rt charge. What is the magnitude of the for i/w*/r ov(kwyg ,o9vpce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges eat b166s8 oisvwf w*2wsch 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 midway between the two chargesfwwb8ts sw16 *oi6 v2s?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -) 4ophso+q1 ktx8zlw/ 4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 1qz4/p8xwks o)+th ol cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chargf454evrpvl yf/m(k )je is placed at the 50 cm mark. At what point on a line joining the two charges4yvvmlf5 e4)kfp j/(r is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0 twr3;k xik: nh7vh()y.20 m. What is the magnitude of the electric field at thet:kh 37;y kiwxh(n) rv point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Thel 7mln/ul,x4l last corner is occul,llm7 n4u/xl pied 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 ar1 ko5, mv f1vzyh,kcd/e 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 electric field at the square's centermc vzkkod/fy1hv5, 1 ,?

  A force of 10 N acts on a charge oft 8mkw, iu 0xt sb1q(h(ca3n6n 5.0 mC when it is placed in a uniform electric field. What isc3,s t6 umxk0w8q1ntb a(hn (i the magnitude of this electric field?

  A particle with a charge onek7; skvl ;6. pbx/ohf 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 isug(y4wt a8; vu placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the baly w8; gtu(avu4l for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed n/ ,v8tjdif. ainside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the elect/8a nt vdf.i,jric field?

  A metal sphere of radius 10 cm carries a charge46e7vnt)z5 w zl4rjgz of +2.0 mC. What is the magnitude of the electric field n46z5 zje t7g)lrwv4z 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge7g,53b/fyvlahj4gl 5dk,caq : tc+x c of 3.0 mC. What is the electric field 6.0 cm from the center of c4ab,dgct3y7av5lg5 q, hk+fjx c/l: the sphere?