State the law of conservation of electftfsd9,ka;x ne ka iw1hyx62(:9p n v/qw -hp.ric charge.

  Is it possible for two negative charges to att q8o3 *v.,mzwd ub9ec8x/krdtract each other?

  Is it possible for a positive and gme,t wejv7 k;p6y7 n7a negative charge to attract each other?

  A glass rod is rubbed with ax*ol */ m( bx3c+.rcf.ijx wwx piece of silk. During the process the glass rod acquif w.x jco*l(/i mx* x3b.rwx+cres a positive charge and the silk

  A proton carries a

  The model of the atom q d3 wyspic240shows a

  A neutral atom always a 3c4u(s*njyehas

  An atom has more electrons than protons.su7/wb4o2ri q ee9bf. The atom is

  Materials in which the electrons are75gv5y ,kmzffdu /m(w bound very tightly to the nuclei are referrkg7 5, fvmy/z d(w5mfued to as

  Materials in which the electro fw:hs 4 9 ozrc-u8l6lq5h,skvns are bound very loosely to the nuclei and can move about freely w86lfwcsq5rkh4-ov uh lzs:,9 ithin the material are referred to as

  A negatively charged rod is brought near one end of an unchargbif -gg 7idn2cyr*+t( ed metal bar. The end of the metal bar farthest from ci-gf2g 7tynrd *+(bithe charged rod will be charged

  Sphere A carries a net positive charge, ovxob 47:rnh- +ac.: cax7gu rand sphere B is neutral. They are placed nea.v +aocg bur77:oxahrn- xc: 4r each 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 electroscg15;alfhf ;dk *dmll3m sjp-/ope positively?

  An originally neutral electroscope is briefl: npq-*a/p:hw5xppbq y touched with a positively charged glass rod.np 5p-aq::/whx ppbq* The electroscope

  An originally neutral electroscope sd( m3ahx5a(p is grounded briefly while a positively charged glass rod is held near it. After the glassha (5a(x3mp ds rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separater6susexizc 60d 0y *ei;f, pn*. Then a negative object is brought near the electroscope, but does not touch it. What happens to the lesi ;x,0i*ecp 6e s0rd6u n*fzyaves?

  A large negatively cesxm ))wcfea3): ;f7ue3ehl y harged object 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, and stops. The first ball rolls forward, but does not touch the negative object. At no time does either ball touc;:y3e hu al)ef)e x3wsm7ec f)h the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb i oa/kqi6h3d-constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a d-avgj vfe)e29 nr(9z mistance d. The first charge is larger in magnitu9gjavn9ef (m ze2) v-rde than the second charge.

  Sphere A carries a net*qkwdt cx4tl.j* 2; b6 yr bt.q+f5ybh)hu hv5 charge and sphere B is neutral. They are placed near each other on an c;4qq by5b2)*l hxh*twj yv6 .ukbt5f.dh+rtinsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certaigsu-p.f 56rb fn force. If the charges on both objects are doubled wi-surbgf f5.6pth no change in separation, the force between them

  Two charges are separated by a distance d *k0;:at. zvmdvs; uyk and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual fm t;;0ky kuz*vsv a:d.orces?

  Two charged objects attract each othz:4ghz70:p 7cny uketer 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 h :ztpzy0 cg7n7kue 4:centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a protob2p f4nur,,i(qvn-*r1 ou vrr65lq kg n are separated by a distance of 1.0 m. What happens to the magnitude of the fn,p1riqvl bv,-u rqg6r(5kou2nrf4 * orce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a d5kk90 has +wittk3 ld5istance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron 9l3+t5ksa dt0ikhw5k is placed next to the proton?

  An electron and a proton are sep w* dhpt*wiu 0do5gv 280i8a*wn;ufffarated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m cuw5f;h foudwtdap*008* wfi i8*2vg nloser to the proton?

  A point charge of +Q is placed at the cente ,uk, cd(pmo2mr of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an eldcup2(ok , m,mectrostatic 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 an eqf15wxx lcam 23uilateral 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. Wh afl2cw1m3 x5xat 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 vectohlayc+uym724s b zq67r?

  At twice the distance jyeca3g5e4 /xbc. nh-2,yqyjfrom a point charge, the strength of the electric field

  Is it possible to have asu;vg1 :f6c su zero electric field value between a negative and positive chargg ;uuvfc:1 s6se along the line joining the two charges?

  Is it possible to have a zero electric field value bewisz132awk tlx 37ob3 hr a86utween two positive charges along the7zlr x 1w haw8i6s3b3t2u3ok a line joining the two charges?

  Electric field lines near psitive point chy- ky n6y89qcs gga::targes

  The electric field s5h. mb o9uq)bwhown

  Can electric field lines intvh hxg+/ *x0h0ro nvk6ersect in free space?

  A solid block of metal in electrostatic zn offti37 rcyd)0(t8 q;ir5j equilibrium is placed in a uniform electric field.7cto 38 dfnrzyt5 fiq(; 0i)rj Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere ue6k6r+msp hge/-ka hkzp-fm+nsk3)(zb 8g /of equal diameters are each given the same charge, the electric fieldk6)e(snepm /+ mpbhs /gk3 u fh--zraz+k8gk6 (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a un3ye6)lj ne 2*d1 uuyzqiform electric field is directed straight upward. What can benqu1e* )ydz6l2e3 jyu said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near04alw ahka3v : an electric charge

  A positive point charge is enclosed in a hollow metallic 0 9r z1xbw0sawa e;t1lsphere that is grounded. As09;0et1bwa x a lszw1r 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 equili 3os7onzs48kybrium.

State Gauss's law.

  The charge carried by one elect:g kp 9h zrcv4)uo48mi zvaw47ron 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 4(dlupv,:p xqcharge of +2.00 mC. How many more protons than electrons does this pq ud :pv4p,(lxiece of plastic have?

  What is the charge on 1 kg of progvmob/o alqp(,8ev h :euj ;gy-*4un/.axb8ttons?

  An atomic nucleus haj27 defc 8sb9cs a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepl gguwy32/wp wt. kpm:pii7. :arated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectivelyww.tpl:7 ykup/ip3wg. :i gm2 . What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charbztbi*v+o+c9a x)s w 7ge, and the force between them is 1.0 N. What is the magnitude of the sect+ov z*ca)9x+bi wbs 7ond charge?

  Two 1.0-C charges have a force between them of 1.0 :ye-b:dckg:)hs ii 5h N. How far apart are they?

  The force between a j oyolyx/q+*7. vev( o$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart,+h e 1po3xfyu5 experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force be fey p1+o5x3uhtween them?

  Three identical point charge ) dbmm57p*8f/ggrlzts of 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. What are the magnitude and direction of p)gzd5lmgm 7 r/*fb8tthe electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A c*qr3nc/7eiy-akl x 5pgjb4 i8d5+ fjtharge 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 thek5dc4r nli jxg57yj t/afb 83*q- +epi magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the follow-e+3+*h-e- ri 6pvwefh4lfcd . jvr nding 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 magnitude of the force on the 3.00-mC char-idfcl46 .- re+*whrfejp+ v hved n3-ge?

  A point charge of +Q is placed at the center of a sj )+jee4b;zb /dft :gnquare, and a second point charge of -Q is placebnj)f4;eg/d: tzbe+ j d 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 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); Q2mqfb ,lv p/p ai,/+og( = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of /a (mv lpf/obp,q ,i+gthe net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is8 gw7 2tu-r jash7ofx(g t:yf2 at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of t r7fgj(-2f ytx87ow:h sa u2gthe net force on the 5.0 nC charge?

  Three identical charges of 3.0 /: g9os(dialm.hu5 he(0oabkw.9y ipmC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. og/9imhh 9( .bao(iawpk e yd5l0s:.uWhat is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are s,s)++dqbhi, ( 2b p/yt hjzlgpeparated by 3.0 m. At what point, on a line between the two charges, hs( ,dgyq+pb +,jhz) ilb2p t/would 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 = ..,rod s mgi339otfimb2 0m7+pjl hqy4.0 m. Where on the x-axis can a thioy,+fr3o3d . 2glbp9iij.ht07qm m ms rd charge be placed so the net force on it is zero?

  Charge +2q is placed ab)w+*; isncibt the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed sn )+wb* cisb;io that the force on it is zero?

  A copper penny has a mass of 3.0 g zpq88mpj.8f ,jv2koh . 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 att5w+y( m1kq6 v prubkt7raction of a fixed proton some distance above it. How far above the electron is thqy1b67r+km(t5 v ukpwe proton?

  Two 0.20-g metal spheres are hung from a common posl zbe(0fl+q0int by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the thrf+e q00 ll(zsbeads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus ha*yz cgg2 1d5djs a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 mz*y5d2cgg1d j from the nucleus?

  What are the magnitude and direction of the electdhi0-t lvk7 l+ric field at a distance of 1.50 m from a 50.0-nC charget7dil h+vk 0l-?

  A 5.0-C charge is 10 m from a small test cvzqay+ykg6 y-gaon lsei .c9 .u)9; 0oharge. What is the magnitude of the electric field at the location+yq cva9 zae0k9iy; os6 .gu.y-long) of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What ma: dhst -n;/1cl.j wmis the direction of the electric field?;slj adn- mm/1tc.h: w

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thejy1bguu+t (x s)n-ph0 force experienced by a 1.0 nC charge placed at the location of the test charge?0pu st bhyxg+-nu1 )j(

  Two point charges each have a value of 3.0 C and are separated by a dqev*2xg mo77 kq 02qqdistance of 4k 0xd2 q2mqg7o7v*eqq .0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stic(xx.)y h5 lexe2b)4egqefyb y 5:oc+lk and a -4.0 mC charge is placed at the 50 cm mark egex xeh)x2 l4)bq:loc(fyb5+y e5y .. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark hr6r4e(n.a9hll0p saof a meter stick 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 fiea9 .allr46 0(npshrehld zero?

  Two point charges of +3.0 mC and -7.0 mC are,uyt61w7 bboekwk (k)ns y/ jq:iky+0 placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betwe(s76 )+,nbyy0ku k/wk :woyijekbt1 q en them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Thna(f2fl, tt0gh78*6j k iw jpve last corner is occupied by a -3.0 mC charge. Find the electrpwih ktv7a*2 t6f8(fjgjl , n0ic field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placalq; k0hns ,(med 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 tslq;h(k nm,0a he 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 un:aftw6mf 0mj u413rr m pyob5*iform electric fieubr35t:amf *40 mwo6r j1f mypld. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mCrx5n fpbs. c1z879sse 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 electri .tyih4m tko,)c field of 6000 N/C pointoi),.mt4k hyting downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carriex//ha154fn s 5cto ujns a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the forcs4t /xn acfnu1/55ohj e of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2 +1nrujmj1 o,f j,o-pk.0 mC. What is the magnitude of the electric field 5.0 cm from th+,1o jokj-,fum1n r jpe sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electrgm(* stg* gzx y4y*rf6ic field 6.0 cm from the center o(msz*f4 6ytgx rg*gy*f the sphere?