State the law of conserva9hge0i p5zrvq8 g(g -rtion of electric charge.

  Is it possible for two negative charges to attract eb uv;v,3wa xt.ach other?

  Is it possible for a positive and a negative charge to attract each (epe*8/8ujgdxg 1v9)4rjb/b bshx q tother?

  A glass rod is rubbed with a piece of silk. Du adwc9/ gmzo.:-qs9*dap wdu6ring the process the glass rod acquirespd.gdm:d9a ou6s-9*wczq / wa a positive charge and the silk

  A proton carries a

  The model of the atom69hee nkupm* 0o 3:oxi shows a

  A neutral atom always hlh,mnk)t4,jliobt.4i0we8 b vr h p*+x1ez1 qas

  An atom has more electrons than protons. The atom i 3kdduu.owo3rm5 0m.q s

  Materials in which the electrons are bound very tightly to the nuclei ar u ;yu;tb-gys v5:g*u+ hlymq6e referrglhs; tq6u uv-yg; y:bym*u5+ ed to as

  Materials in which the electrons are b1g 7dbp9w uhn5/wqt2xxfh9d( ound very loosely to the nuclei and can move at/h gdwdx1(p7h 9qwb2 5nfxu 9bout freely within the material are referred to as

  A negatively charged rod is broug*6 j(8llz p4vy e5uw tdb)+(pwb enc4aht near one end of an uncharged metal bar. The end of the metal bar farthest from the(w6 4yppd5 z*(+8 luj) wa4tlbnveebc charged rod will be charged

  Sphere A carries a netoghia5b. 9a0h i.fh .x positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which sta5. foa.9i i.hgahh0 xbtement is correct?

  How can a negatively u 70ex4opz3wggl77pg hwm1 )e charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charbtl)q. ;a xn4yged glass rod. nb.4atx);y q l The electroscope

  An originally neutral electroscope is az9*zfav 43 (sjq1 ynjgrounded briefly while a positively charged glass rod is held near4v zjy1 aa3z *fqsn9j( it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and c,vb50 g jpn*fthe leaves separate. Then a negative object is brought near the electroscope, but does not v0p5fng, j*bctouch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated dp5 d,os )k53qx lvpo7ibb5 )rtable. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic bax 3 vp ,po5id lb7kbr)5sdqo5)ll 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. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb cobu4oc6m,bzw*:+xl.l u u2 oamnstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance dxksuj:jr4 q;, b1c,hv . The first charge is larger in magnitude than the second cha: uc h,kjs1qr,xjv4 ;brge.

  Sphere A carries a nkgy0 ixnq z,/w; 8;ndzhy+ am8n3m 0wget charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electro;3i8a nnz0 ;yndgz /8hq+ kmwygm,x w0static force between them?

  Two charged objects attract each other with a certain force. If the charges o6-5 4b lmb vv0whbc(hrn both objects are doubled with no change in separation, the force b b4-mb6(lrh cwvbvh05etween them

  Two charges are separated by a distance d and exert mutual attractivlb*/-c*9.lrxnk z zar9zi5pbe forces of F on each other. If the charges are separated by a distance of d*-p l 99i *czzxa5rlbbn /.krz/3, what are the new mutual forces?

  Two charged objects atkczwl/ioc8ib3*9sjo 8qiycqd5 ju ki3 i7 02.tract 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 sdic*ljk8b9 q2 ju35 q zki/ 3w.ic0cioo8 yi7to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 ml9u wgin/y k-p2lt35u. What happens to the magnitude of the force on the proton if u/u 9 pwg-3y2llkn 5tia second electron is placed next to the first electron?

  An electron and a proton are bs,uyi;1he , c28m1ep ,neourseparated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed nexih, c,;e1unebou2mp ,s 81ry et to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens ,-qzqm /es,zu to the size of the force on the proton if z/ zsqe ,um-,qthe electron is moved 0.50 m closer to the proton?

  A point charge of +Q isc8af yl:rm3ss)v z5* z placed at the center of a square. When a second point charge of -Q is placed at one of the square's corners, it is obser38zlz)ss 5:*v frcamy ved 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 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 centrom-bh;6cer:l tfiy p gpr8-c32gx8 ge/id of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertice2ec cy6tm g:;gel8fh b-i/8xrr3p -pg s, 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 vec0 tf.ljeb mp7b3h0mg h* qoode)h/,o2tor?

  At twice the distance from a point charge, tkkzxl-- -+x us4h ,sz/pivht*he strength of the electric field

  Is it possible to have a zero electric field value between a negative and pof(kf.0rn o yr/ tu0ke0sitive charge along the line joining the two chargf tkero(.n00u0 fy/kr es?

  Is it possible to have +ov6h6nmc h vqy8sxj) ob i,5/c7tl5x a zero electric field value between two positive charges al x5 vo+jhnvc,tx6chisq b)65 /omy7l8 ong the line joining the two charges?

  Electric field lines near sw- b/ 2 qvpt5mbjkq cao-,r1+psitive point charges

  The electric field shop5+z e3ur7zm9uhnar0 wn

  Can electric field lines intersect in free s4 ock-eq4a5mqbgcf7 0 pace?

  A solid block of metal in electrostatic equilibrium is placed in a uniform e9(ge b:xx;qzg 8su+, 7ved 1hcrnj9pzka .h. vlectric field. Give a statement concerning the electr9n: h9 vj7ue.1vrab(es x,hq+p ;c xkgdg8zz .ic field in the block's interior.

  If a solid metal sphere and a hollow e/nim) 0mixjxx5nt9 1wm/ov4ak 6y,ametal sphere of equal diameters are each given the same charge, the electric field (E) midway between the ivx)ywmnx tk,0/xaam956eojm/4 1i n center and the surface is

  A cubic block of aluminum rests on +q4hw b dq,xq4hf7l,m kaqww- 8c3t3na wooden table in a region where a uniform electric field is directed straight upward.cnkaft3 ,w4-l d8m x hqbw7,4+3wqh qq What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charbnt-f:,r 3kw 3h t4tcyge

  A positive point charge is enclosed.6 v.*o(f 1oy1cmq6ddx arcis in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above.f 6ar.d(vyqm11xo6dcs *ico the hollow sphere has

State three properties of conductors in static equilibriux x2ssmcpe 5fzp b8/8v kh37-im.

State Gauss's law.

  The charge carried by one eleu e*tr5n3x o84ry)gm55eis kmctron 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.e++z1ldj a59mzmnbx4v8( f ut How many more protons than electrons doeez f+mntba dvx9m+lz8 j1 u45(s this piece of plastic have?

  What is the charge on vo8(v 0k5q62lihn-yqf fh8z r 1 kg of protons?

  An atomic nucleus has a charge of te(c f2 -hp c1su)oyvz4c40bs$+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatea(v2hy;x3ln r:5x y emd by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectivne x5y2(yl:3 r;vh amxely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m fr,i:/3o7rk 6ry*j pv)bpf co pfom a second charge, and the force between them is 1.0 N. What is the magnitude of the sfr6p:p ko j7cvbf3y r,o*i)/pecond charge?

  Two 1.0-C charges have a force agc) +k-;yhqf between them of 1.0 N. How far apart are they?

  The force between a tk:0 njmp 5.vx$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1f2 ky(6 ufjaf1.0-N force. If they are moved to a new separation of 8.0 cm, what is the elecy a1(f2k6jfu ftric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. , d2(xqj5cu973b)q bkpe not d The first charge is at the origin, the second to the right at x = 50 cm, aneu ,n)7 qx32bcpq 5t9d( okjdbd 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 .ep29150daw cbvyw5i5k iyf dof +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 andd.iwc 0 2kp5y9a 51yf5biwevd direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the fj+ahbc(vdp,p 78 rbc vz(i20tollowing 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 chpr+(tb0 2 8cvd zi(7pvacbj, harge?

  A point charge of +Q is pl204siaye vb6l aced at the center of a square, and a second point charge of -Q is placed at the upper-le046iv l2abse yft 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); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC isuse4h. 4)ogkdbjm*(z at (0, 0*sz.doh 4bmeg j)4ku(). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 bcak98*3 zz zim, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 n zzz9ki8b3*ca C charge?

  Three identical charges of 3.0 mC are placed at the vertices ofnl(k 0en gv:m r.*cij6 a4xbo2 an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the chakbx2 g.*nlmac(4 6oenjrv i:0 rges?

  Consider point charges of +Q and +4Q, which are separated by 3 ebv+i-lgqa-3*.zp eu.0 m. At what point, on a line betweeq*eevu g+zi p lab-.-3n the two charges, 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 m. Where ad2ugx,x543b f3pl/q x hu uc.i *n/tuon the x-axis can a third charge be placed so the net force on iti3pxx .5a /ulu,t/bfh g*qn x24 du3uc is zero?

  Charge +2q is placed at the orig4gkz/ap5 q6 ocin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is a/6 o5g4zkqcpzero?

  A copper penny has a mass of 3.0 g. A totapt qut8oh;33gz;dsu8 1*p kqsl 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 bgk)o,jnps m:;y 3:tl jx:5oy ry the attraction of a fixed proton some distance aboj yosnt5;jp):lg:3:r ko my,xve it. How far above the electron is the proton?

  Two 0.20-g metal spheres q.p zy8)*oc yfare hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, an*8fcyz yqp.) od 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 t,aem (t)b;ax;lcwn26; laldk he magnitude of the electric field anall ,lt;6)(2cw mbkaed;;x at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dista xs) 3h4h8lsijmf:nc n i9 c2sc;8yc.wnce of 1.50 m from a 50.0-n wm.is sf2c8)hiylccj 9 :cs;nh3 8xn4C charge?

  A 5.0-C charge is 10 m from a smalll8bcb3k re c.rt6+;/r ;8ls :vqgomq.vkhp+x test charge. What is the magnitude of the electrik 8l r8qrtbge63;h m:rv x c +p/q;lk.cvb+so.c field at the location of the test charge?

  A 5.0-C charge is 10 maf (g)qq v6lv,9 vzr/b from a small test charge. What is the direction of the electric fielf/lvrzvv6bq( q)g9, ad?

  A 5.0-C charge is 10 m from a smallmnvmnqw**j33*z6n -t0eyfzv test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locat** 0vef wz3 nm3z-y jqtnm*vn6ion of the test charge?

  Two point charges each have a value of 3.0 C and are separated aa nxvh5ni/td44 ve*6 by a distance of 4.0 m. What is thea/5n4n xa evhvi*6 4td 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 stick and a gu/xa1:y l;w-(uij up-4.0 mC charge is placed at the 50 cm mark. What is the electric field ajiu/ug:wy l-1ua ( p;xt the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a,h9 g)j5kuy7gqse-m) von ebbh,7b h 5 -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is 7-b egko7 hy ,)eqmvhg)bbsnh9 j,55uthe electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed ahoyp/sxt 3z)6j)) hsrwe3 i9ft x = 0 and x = 0.20 m. What is the magnitude of the electric fieht3x6 yjoshfr9 /)))e3 ziws pld at the point midway between them?

  Three 3.0 mC charges are at the three corners ofcd in8;29dn.ehb 5yi b a square of side 0.50 m. The last hdy n8eb5c bin.2d; 9icorner is occupied 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 sideii n)r;h00+mbioy a5*xl y) sm. 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 elem a*i;b0ri hm50y)+ nl) siyxoctric field at the square's center?

  A force of 10 N acts on a chaf w ; 7zhkmt0+pf2tj(hcloy3.rge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this elecl3 f2+mzpwk.;t7y( tj hhf0o ctric field?

  A particle with a charge of 4.0j5mom mo a4)p) 4+zmho 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 vp,3c as x4k1mtn1y 1u0.120 g is placed in an electric field of 6000 N/C pointing downward. What t 1vxyk,3 s uc1napm41charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The 9d ml qyq sdviyk,l6i )t tnukji6-62p(b/p 5*ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are thebl t-nq,/ks 6d6y)pi k26*ld(9qju vim 5piyt magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carriygkgu yj3:4n9 9)p zyres a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm f3rpjkg 49)y9 uzn y:ygrom the sphere's surface?

  A metal sphere of radius 2.0 gn2gqhe ewmv6t7n+8z7 /m,z z cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of n , gm znq 62/whev7zez8tm+g7the sphere?