State the law of conserm)vz( obgh 6h)vation of electric charge.

  Is it possible for two negative charg xt-cb4-hvc :ies to attract each other?

  Is it possible for a positive and a negative charge to attract each otherr o9y32xwv1st k hus445xbev*?

  A glass rod is rubbed with 5 )ibfwfp6pr8vr e4. na piece of silk. During the process the glass rod acquires a positive charge and the6rbi fnf45 .evwpp)r 8 silk

  A proton carries a

  The model of the atom - osthk6j0i2 rtzj-1p shows a

  A neutral atom alway0uaxv :oyo7 5jqw3; uqs has

  An atom has more electroaz5 hgsf60c:2ym b7n hsb3x0 ons than protons. The atom is

  Materials in which the electrons are bound very tightly to the)hqod4xk q .jz -,wd- (zh)dnk nuclei are referred -n)j) khd,dh(4. ozx -qqdkwzto as

  Materials in which the electrons are bound v sfz7u9yo2;a wery loosely to the nuclei and can move about freely within the materialz; y a7ufs2ow9 are referred to as

  A negatively charged rod is brought near one end of an uncharged metala-b,-ajs us6 yv+6e4 +pdcnat bar. The end of the metal bar farthest from the cyb a6-+,c v+js tp6-eadu4s anharged rod will be charged

  Sphere A carries a net positiv-g yuk(6t z,lqe charge, and sphere B is neutral. They are placed near each other on an insulated table. S (zk6tlq,-ygu phere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chxxcar ynzc+3lu/4d 8w4 4yb-0 wzg+zuarge an electroscope positively?

  An originally neutral electroscope is briefly k45ae:vxz m9f8g+ iwctouched with a positively charged glass rod. The electrom gzke+vw:a 4985icf xscope

  An originally neutral electroscope is grounded briefly while a sz eyd2)yelbu0*jl ,z,*vgc9*g mm i. positively charged glass rod is held near it. After the glass rod is removed, the electros*vu,l ml )s,egydg zc by.m* 0eij9*z2cope

  A positive object touches a neutral electroscope, an jab g,2kpog1t4d2ta( gog3;wd the leaves separate. Then a negative object is brought near the electrosco;d pk4g1,a 2 (3jtwotg 2gabgope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tabl/bw i*gn) , wxvo fnehcz;1:5ie. 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 touch the negative object. Wha;* w gb )io,we5inxfcz1/h:nvt is the final charge on each ball?

  Charge is

  What are the units of the Coulomb r8u, et2 ;c)n/lgjh7tud*tix constant $k$, which appears in Coulomb's law?

  Two charged objects are separs.ym9b n. smu9ated by a distance d. The first charge is larger in magnitude than the second ch9..um ssymbn9arge.

  Sphere A carries a net charge and sphere B is neutrakuct9ukxh o xu o31va:;2z v33l. They are placed near each other on an insulated table. Which statement best descrt3 v1z3 ch3uo9;u:kv aouxk2x ibes the electrostatic force between them?

  Two charged objects attract each other with a cycnq8e*c wxp8zgkp)+.hv0 3 ;b 1tu)awfq ne*ertain force. If the charges on bot*nzpfq*pq80+y)e)h wvg3 w.ct8n ;b1 acxuekh objects are doubled with no change in separation, the force between them

  Two charges are separated by a distal;ez 0fc1l; o/9 rogsc2zjl .fnce d and exert mutual attractive forces of F on each oth12 ez rjl;. fzslocg/ ;foc0l9er. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other witvgd-j upm 0i/ wdr+, r5uz((oqh a force F. What happens to the force between them ifz(m+r quu0 /dg,w5pjro( - vdi 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 a distance of 1.0 m. What xu,hp39n/tgh happens to the magnitude of the force on the proton if a second eleh,/x tgh3un9pctron is placed next to the first electron?

  An electron and a proton are separated by a ds yxt/st ,p( 3yj0mbm*istance of 1.0 m. What happens to the magnitude of the force on the first electro*j0x3t,s/p ( by tmmysn if a second electron is placed next to the proton?

  An electron and a proton an )g1g+4l cr4asktk5x re separated by a distance of 1.0 m. What happens to the size of the force on the proton if thetk14sxl 4ag)5cg +nk r electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squ;cx o) dalmfmg .1q.eqj3;4jmare. When a second point charge of -Q is placed at one of the square's corners, it is observed that an elecdmlc 1e.;jfg 4qo)mqja 3 xm;.trostatic 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 equilateral 5n+l sqz d)1twtriangle. 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 awl tqzn 5+1sd) third charge of +Q placed at one of the other vertices?

  Which of the followikxo; k,2vnlq1j 4zr6r ng is not a vector?

  At twice the distance from a point charge, theeid wrrvyxj/281s3a(:6u jh p strength of the electric field

  Is it possible to have a zero electric field value between a 5r0 85m:rb4 fxbdro julnu4e,negative and positive charge alonge8m r5 ubjln40do5r, rf:b4u x the line joining the two charges?

  Is it possible to have vnzut92u 1dd5 a zero electric field value between two positive charges along the line joining the two chardtv19d nu 5zu2ges?

  Electric field lines near psitivevdkvct ,fve()o3ik umw 1(w16 point charges

  The electric field shown jebtjuzp p 6x4eq76 (6

  Can electric field lines intersect in free spaqesq* j09oe -hce?

  A solid block of metal in electrostatic equilibrium 1- thlf.5 jpryis placed in a uniform electric field. Give a statement concerning the elec5y-p f.t lhj1rtric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal c:r,r:6 *v hz,n(itz7 bafzsc diameters are each given the same charge, the electric ( h:rza i*szvc nt,cz:,br6f7 field (E) midway between the center and the surface is

  A cubic block of alum7n ;bzlpn,4dlrn 7:y:e9 zbkj 9zen;ginum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfabd49jy brzn;:g ,l z 9nln; np7z7ek:ece?

  If a conductor is in electrostatic equilibrium near an electric cheb ye:( )1jzhn. zvhn8arge

  A positive point charge is e+*ybxs-d-p2 up c7hsjav2uk)nclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollowk2 ps7 ahu-c bud2v+x*j)y-ps sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors-pw0hkrv f 5wqdwq7:-b:n ln; )w8 azm in static equilibrium.

State Gauss's law.

  The charge carried by one electron is h7g1dwk c8yh+yq fn38 $e = -1.6 \times 10^{-19} \; C$. 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 than eleemua n/kt- 8 f,yz*kvb3 ld-a0ct-af znbyekd0vtm8/ -lauk3*, rons does this piece of plastic have?

  What is the charge on 1+:,t9jpnx d 1to3e0lhq p m0wt kg of protons?

  An atomic nucleus ha(m /jan1vh4 tps a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5ygp-c1 u*-56 mafab, qgk u9zr cm, have charge values of 2.0 and -4.0 mC, respectively. Whatc- aqrguz56k gpmay*-u9,1bf is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is/*xkxftryhl / gfneng(p*, 395fbloj8kf9r* 1.0 N. What is the magnitude of tf ytnr8lpj e/ x*f g3rf/n(o95*,gh*k9l xfbkhe second charge?

  Two 1.0-C charges have a fofm / ,*o giz t3i6pom29.c ywbe8dm/cfrce between them of 1.0 N. How far apart are they?

  The force between a pcy7uqnt0hzm6(k* 6t$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cfu +- r a2:g*yhibp.zem apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electi+hf*zar2.egbu p:-y ric force between them?

  Three identical point charges of 2.0 mC qkg wn5p.)s48*urwi tare 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 iw*8 r)k4ngs wq 5utp.origin?

  Three point charges are y gcjnxv-j 90wngoc clcy: gj/ 9,89ejf0.0os placed 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 e00jc9 ncjj.ow 09:y,sy8o 9cgg/flge jv nx-c lectrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = qlq7gzl 9. pq62.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is thg l.6zqq7q9p le magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a sptg(hl5oq 39jquare, 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 iqol p(g35tj9h s 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 (0ukph0j 6viorzj30sq:n) ,gy tfq ho9b*.5j/n.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on 0ij)r js ,fo 03vtq56*zyuk/g on:.hqj9bp hn 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 isx f7poxoy6svc3duju4 d4:t0t+ lzg)0s p-k / e at (0, 0). What is the direction of the net force on the 5.0 nC cha /0u+kp)ct z-v44ut37 :ddselgo xs60oxyfjprge?

  Three identical charges of 3.0 mC are placed at thesov*511v urv t vertices of an equilateral triangle which measures 30 cm on a side. Wha1v*sv o1u5 vtrt is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges;7bv xfkdsl,xfb+ )1 z of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two ch b b;v,7df1lz )kx+fsxarges, 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 = 4.0 mp,. val* :z so3feuwr q3)pd-:w -nsaz. Where on the x-axis can a third charge be placed so the net force on it is f v wa3p-pesw-on,)qa*:sz du3:zr .lzero?

  Charge +2q is placed at the origin and charge -q i/t igr5469;w lhoquiws placed at x = 2a. Where can a third positive charge +q be placedq964g5w;/h o l iuiwrt so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A fd1f ;b9.j8 b5sl 6wt k1diyfftotal 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 un +x+yc*z ,ltf6t:l qfp against the force of gravity by the attraction of a fixed proton some distance above it. How faylqz+,t6n*fc+xlt: f r above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting (u7f zh1x0czmvl8(g+)jx nzwthreads which are 30 cm long. Bot1(+ j x7hzcgzfvl n(m0zw)8uxh 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 ig 9fj)uvycz )gewux+6* w7vh:s the magnitude of the electric field at a distance of 1.0 m from the nucleu:7f hc v v*uuzg6)wew9xj)gy+s?

  What are the magnitude 0hn:i b(qw +wg vlt,f8and direction of the electric field at a distance of 1.50 m from a 50.0-nC chnhf0,w:( i g+qw8btvl arge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of w8 c6vutq5 xte t:l6 5wltt49ithe electric fi ilt6tw 6ett:u wctv55lq x948eld at the location of the test charge?

  A 5.0-C charge is 10 m from a smcge 0d3lh7- fqall test charge. What is the direction of the electricfdq37 leg- h0c field?

  A 5.0-C charge is 10 m from a small test charge. What is the magn h42ui ek:(npbitude of the force experienceduh:4ikeb np(2 by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a b3c ctnv(5s)1fqj*v svalue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a p)cc*qvj s1( tvbfn53soint midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark o,+sb8h o.lc8ziekm. zt4wqm+ 4 yv6ntf a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Wh.q+mz+b8 ni6w4my z lvtcoe.,h8s 4 ktat is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mar 9 -nic5)j/wt9qozsjf, ;b 0,omegntsk of a meter stick and a -4.0 mC charge i o w o-59n0q ,bf;ejig,cmsz)n9t /jsts placed at the 50 cm mark. 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 and x = 0.20 m. Wp+fc7 xx(u dxcpy;7+ yhat is the magnitu7uy(f7+xc+y cpp;xd x de of the electric field at the point midway between them?

  Three 3.0 mC charges are at the th)s5 x ;vn5ryr9xxcf1r ree corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at r5c rn9; xxv5 fx)s1rythe center of the square.

  Consider a square which is 1.0 m om8vw.1 +rrk7k)bw eea n a side. Charges are 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'm 8+a7)kr1.k wewrev bs center?

  A force of 10 N acts on a charge of 5.0 mC when it is k pb 370rz* e -dedhmnmqmpp n1q;,5o4placed in a uniform electric field. What is dp -drp0 7kepn3q e5m,;z bhq*mon m41the magnitude of this electric field?

  A particle with a charge( /gwhclb i5ck6*y (4gigvt/e 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 field of 6000 N/Cs-m;ir32pduq pointing downward. What charge must be plac 3- ridqm2pu;sed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 na,vh2 hnzl7g.yzr p:-C. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the elg:7-y v. h l2nprzaz,hectric field?

  A metal sphere of radius 10 cm carrieg3 *a pc*-g 8qqjcni :x4h+byns a charge of +2.0 mC. What is the magnitude of the electric fie4h3ic yggn* pq:*qjbancx+8 -ld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a chargrjwn h)4 8y/bwe of 3.0 mC. What is the electric field 6.0 cm from the center of the rh njb/4w)8yw sphere?