State the law of conservation of electric chfk6 ,o jiqdn,(arge.

  Is it possible for two negative charges to attract each otrsrjb* bp0+ w8her?

  Is it possible for a positive and a negative cha3 8- hu732fdhoruqjx; t uza9nrge to attract each other?

  A glass rod is rubbed with a piece of silk. Duridqjmmgt 9ez0 , a2(de;h yyd*+-gd4i)gsj/ iu ng the process the glass rod acquires 4uz0q92,dde my+-ts )*dyi a ggjm(egj ;/ hida positive charge and the silk

  A proton carries a

  The model of the atom /7 qyqa im,g4ia61 iuzshows a

  A neutral atom always h(83t (t qrfttvas

  An atom has more electrons byy9o/i.g3 d8fp c9 kbthan protons. The atom is

  Materials in which the electrons are bound very tightlyn you+oiqeon h7 z/i h,7,on8m:f9h8 i to the nuclei are referred y7nohohi o:inqh o8iu,nf 7z,/ +me 89to as

  Materials in which the electrons are bound very loose 0*qw3inll .yply to the nuclei and can move about freely within the material are referrl3n .li0q*yw ped to as

  A negatively charged rod is brought near one end of an uncharged metal bar. vjckrs5 5ho3 o4aj))li2i- r t The end of th3i) o4sj )5hai-cjtklo r52vre metal bar farthest from the charged rod will be charged

  Sphere A carries a net pos4 wupz; qt+.qggs4f.citive 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 grounwuzg.pg fct.s; 4+4qqded. Which statement is correct?

  How can a negatively charged rod charv jxt-4wh8 vc*s9n0gg(mx5ew ge an electroscope positively?

  An originally neutral electroscope is briefly touched wit*th b y89lzxpqf.t / 2ibbh1a7h a positively charged glass rod. hbb9a*l f87/h .t yxzp2 b1iqtThe electroscope

  An originally neutral electroscope is grounded briefly 9:zpymxsc )m-x p:d-)n/2y mas.sz towhile a positively charged glass rod is held near it. After the glass rod is removed, the el9asz mt y.2y:cz--)monsp/sx :pxmd) ectroscope

  A positive object touches a neutral electroscope, and th.jlt1tli . k1fe leaves separate. Then a negative object is brougflk1t it.l1 .jht near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tlyzi90+hj xksulr2n c*+) vk, jhn1.jable. 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 do ,kj91uijc0rjz)+h yllxn.s* k+2 v nhes 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 C50yh: i5 uukq 40orpz j,+obiboulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by ,hl*1:ihnqf+d:pss tb y*+ mfa distance d. The first charge is larger in:f*sqlp, it 1hyhbn*smf :++d magnitude than the second charge.

  Sphere A carries a net charge an rz5.e n.yky-nd sphere B is neutral. They are placed near each other on an insulated tableyr.z5 .kn yn-e. Which statement best describes the electrostatic force between them?

  Two charged objects attract each othe+g1wla2za if, r with a certain force. If the charges on both objects are doui,z2 a1l fgwa+bled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces of c pxazv+8f3 ;mm/ n2g8civx ,bF on each other. If the charges are separate/z g vmnv2;x+ac3xip, fm8 bc8d by a distance of d/3, what are the new mutual forces?

  Two charged objects attracem*d: .q)kl jv:y xmz8k scr);t 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 e)kdjm:m*8rkzv y)l ;x:sc q .one-fourth its original value? The force is now equal to

  An electron and a proton are separated by9ukwrym (3 b3b a distance of 1.0 m. What happens to the magnitude of the fk3rbmu9 3by(w orce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 17z9,hzhnf llg h +z9c,.0 m. What happens to the magnitude of the force on the first electron if a seconh c l7h9z,zn g,l+9fhzd electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m.x t8s*cij3. sp What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the prxt3c8sp * .sijoton?

  A point charge of +Q is placed at the center of a square. When a second p ;) abk;thscyw*xw5;noint charge of -Q is placed at one of the square's corners, it is observed that an)a;ns w5kx;*hywt ;bc 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 pla0z a (o+p n)lclif*c.gced at the centroid of an equilateral triangle. When a0cploc( a i.)lzn+ *fg 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 a third charge of +Q placed at one of the other vertices?

  Which of the following is not a ve 5 nnu6j0zz zl)aj zq(;om68dector?

  At twice the distance from a point charge, the strength of the elec,gt6dl3 w/bpdtric field

  Is it possible to have a zero electric field value between a negative and positice ):/xr ,wyhtve charge along the line joining ty)cx, :rw h/tehe two charges?

  Is it possible to have a zero electric field value 4knw0 xsu0 el8*rha+u between two positive charges along the line joining the two+0 w rlu0*8eu sank4xh charges?

  Electric field lines near pmpe 2c z50orbw, +xyy3nky82rsitive point charges

  The electric field showntumx hr:lw q -fsk-f48g1yz 0)

  Can electric field lines intersect in free 6 ;6 t xzuyvwgkki7;z+kk;pn8space?

  A solid block of metal in electrostf5l5z. v j53ecpra bp9*6rur uatic equilibrium is placed in a uniform electric field. Gifc.pzu5 *u5r 9 ar6bve j35lprve a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal dhiptrmq-/si n2 zw 7;.iameters are each given the /pwm .2-i ;snh7itzq rsame 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 region wher3k ;oob).usnge a uniform electric field is directed straight upward. What can be said concerning t3kug bo)s;n. ohe charge on the block's top surface?

  If a conductor is in electrostatic equilipgx f(a 0nxj1*1u5lp:7owih qbrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundiy zii a04cfq/ n;i+h/ed. As compared to the case without the hollow sphere, the electric field at a point directly above the holli 4yi+;czi/ i/nhf0q aow sphere has

State three properties of conductors in static equ)huh ifq s.nn)y .2v*cilibrium.

State Gauss's law.

  The charge carried by one es)eif +o a4v( v(g3hwplectron 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 hasn i +z*jt0ft7i a net charge of +2.00 mC. How many more protons than electrons does this piece of p+zti0 *ntj 7filastic have?

  What is the charge on 1 kg o f 5*fmv)/c h09gcl 2iwu4qi1rnsxd;of protons?

  An atomic nucleus has a char(hzq aq ;6wgtmz8g.f b(z7is, ytp) 3zge 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 anxkooafhu.5xc*yxo +1l5g 1y3d -4.0 mC, respectively. What is gyxoak*f xc1u1hx5. +o 35loythe 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 1.0 Nbpej dyaj 1+4r 3;xh-i. What is; a1r3jep4b d- h+xyij the magnitude of the second charge?

  Two 1.0-C charges have a formu6 tno8 uf(sp7xq ;mcs/qx6)ce between them of 1.0 N. How far apart are they?

  The force between a st94 bzu0yav9$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiebe3n t)r9u 9c9j stq9wnce a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electrucqs9)9 nte93t 9jwr bic force between them?

  Three identical point chav e 3rzc+41mghrges 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 the electrostatic force which acts on the charge at thezc4mh 3eg+rv1 origin?

  Three point charges are placed on the x-a gfw2.0c,1rxgld ei0pxis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x =cpr,w 1ld 0.eg0f2ig x 50 cm, and +4.0 mC 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 located at the following35;vztbfibyc0: 9, bt4x.,sfdaqm0 rx+ akog 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.t00qtm ,4zi5;bgcyafaxk39 x +vb.fd , :rsbo 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: dbkthuq(fjm* 5 35vd second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.qjk:bthduv3f(*5 d 5m0 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 nrn oyq j::05llC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magniqr nl5lo 0:jy:tude 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 (0,53bu7h l7spte d.so.o 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC chao3dbh5eup. 7l oss .t7rge?

  Three identical charges of 3.0 mC are placed at the vertices of mkg 0uo)zj6 a*2l95vhciwf.bxrl 8m*an equilateral triomk f)*l *ihbuzr l8ac2wvmgj0.56x 9angle which measures 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 andf,w 1xz s gwhf401fy.a +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place1wzs .yfaf 1,gh4wf0 x a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin ai -eat nkgkbzsj3o75a/) :k0e nd a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge bebszkk ga5: )i0ee3ja/ -to7nk placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is7m s soehuu:,; placed at x = 2a. Where can a third positive charmu hs; su7oe:,ge +q be placed so that the force on it is zero?

  A copper penny has a masfy n7mfm3pd: sln628 mxd3jzq z u *vbtg1;-w/s of 3.0 g. 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 attracc .soa.: :gis+)hbryyjz9k-w tion of a fixed proton some distance above it. How far above the electron iwsjb)g or::ic.a yz-k+9 y h.ss the proton?

  Two 0.20-g metal spheres are hung from a cr(sk74 ( qbhyv 4(pdall.f.bb ommon point 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 th 7.4. (pk(rb(fdlqyasvlh b4breads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of the electrixqv6g: .c j.iv2stqs i.jb(0ac fi :vj vq6qc g.b0xai.jt s2s(i.eld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electricy05u6jio g5ku a,qo4g field at a distance of 1.50 m from a 55ik0 , 54g6goqayjuo u0.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of tos6 q4qukzx3 1he elec qszx4o16 quk3tric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dia)cux 42b.gpkrection of the electricacukb)42 pgx . field?

  A 5.0-C charge is 10 m from a small testabua.zf i r7ui8jt(;fk5w1 . 7wnyt( h charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charriibw1.;f .7ht(n ytfuw8ja zku57 a(ge?

  Two point charges each have a value of 3.0 C and are separated by abwuvwd8zdit ;.2kf. 1 distance of 4.0 m. What is the electric field at a point midway between the two chargd2wk8u; . bw1v.zfdties?

  A 5.0-mC charge is placed at the 0 cm mark of a mekc*es/w:iti; l0n hif6h/l2y ter stick and a -4.0 mC charge is placed at the 50 cm mark. Whatf0/*w6:cik en/ly ;2ii hh slt is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at th7 eo,ydnh27kx a*b1the 0 cm mark of 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 xen h2do,*7ak y1htb7 charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20xfd(k1 ff0) xsx+wzw1ze9 6 uj m. What is theu0(x1d9 ez xjf+ w1)wkff6xzs magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 ( v.f7 y,2 dbmcixt/dym. The last corner is occupied by a -3.0 mC charge. Find the electric td/y fxd7ic(b .2,vym field at the center of the square.

  Consider a square which is h*,lc9h6tva gch xh :f2.io+g 1.0 m on a side. Charges are placed at the corners of the square ax+ hvhcao ,*f6g i.l9ch:hg2ts 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 center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a unifo84amml,: jbpd rm electric field. What is the magnitude of jm 4bdm,:lp 8athis electric field?

  A particle with a charge of 4.0 gqk3a5:)u kk m. 4haccmC 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 fielhk t:o+d8ik 5ad of 6000 N/C pointing downward. What charge must be placed on the ball f tdk:h+o58 ikaor it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Thwsbzx)o1lzi 3-p6*cv0t l5ia e ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and dir- v30lplcs61 bx iiza*t5w zo)ection of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Wha b qzl61).cufmk wu.f9t is the magnitude f9c.6zk.) wbmuu1 lqfof the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the,1s h s,eiq f/+o*bnbiy 6xl5e electric field 6.0 cm from the center of the sphero*e +enlf1q,s 6/si,b 5h xyibe?