State the law of conservation of electric charg/zocl13/ 3a7 hatey8ekfnd3w;n 0 cnge.

  Is it possible for two negative charges to attracju xwil;w6f2 ) vmz/kg. 7ai7ut each other?

  Is it possible for a positive and a negative charge to axlgxgn36*, comj w(,nttract each other?

  A glass rod is rubbed with a piece of silk. During the process the glasx8gm-*jhinrpqn xf+22m (s*:v gr6kzs rod acquires a porh*6v-+ 8qigsnz m: x22 knmgrjfx (*psitive charge and the silk

  A proton carries a

  The model of the atom showr.5yphtl l:n)s a

  A neutral atom always hq41(cdkd qnu/g3 u)lalt: c: aas

  An atom has more electrons thag2os5crn+ za8 n protons. The atom is

  Materials in which the elecu3b8)pzay 0 ))d8bv0 oiwz -pi.iw xgbtrons are bound very tightly to the nuclei are referred to0b83)zdbpzwiig8)o0-bux pyvw) .ai as

  Materials in which the electrons are bound very loosely to t xj7 xw/0zj-x 6suc3ndhe nuclei and can move about freely within the material a76njwuxzs-xjxdc 0/3re referred to as

  A negatively charged rod is brought near one end of an uncharge/idgdg e a- blh46-vr-0 nue.a (ojk2hd metal bar. The end of the metal bar farthest from the ch2 k b(hrneav. hega4u 6-o/ -0-dldgijarged rod will be charged

  Sphere A carries a net positive charge, and sphe:t2 a8 j/o)gk+ z spvqf1dlzk)p+rf.dre B is neutral. They are placed near each other on an insulated table. Sphere B qvpzz8.fpkfsj d:1+gkt)do/ 2lra+ ) is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged ;dlh -twy1e6+bm-i v zrod charge an electroscope positively?

  An originally neutral electroscope is b f.v lifr0p9l ;jmlxw/gb-a4.sl;)1 fq:ll nzriefly touched with a positively charged glass rod. The electrosc:n0sl- 4 qw izbrfglf p ;llal..mxl/v19f;j)ope

  An originally neutral electroscope tv6va) x3+rl fp6lvkxtb4 /c 3is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the ec)v tkb vl+6lx3 x4/apr6t3vflectroscope

  A positive object toucxq -szo 3gqgwu aeqe *994(y*ihes a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens togqaxy949sz w (eeq*-g*uiqo3 the leaves?

  A large negatively chargfew,pz 1y5/- fla) ;x(afsax ved 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 bs-a;5xfvz 1)wfefy l(x a,/paall, 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 thea 8oy9ahz1l)qj(:xw+f 6yhzl Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are sqaw u3cq4*p v8eparated by a distance d. The first charge is larger in magnitude than the secowvaup43q*c q 8nd charge.

  Sphere A carries a net charge and sphere B is neutral. They are 29lujbeb:m8 vplaced near each other on an insulated table. Which s2: luemj9vbb8tatement best describes the electrostatic force between them?

  Two charged objects attract each other wit)ub)aei;k vz: :4bad th a certain force. If the charges on both objects are doubled with no change in separatieb ) a;db4zu:t kavi:)on, the force between them

  Two charges are separated by a distance d and exert mutual attrac sjat:m-d ,+ok*qr)p-xyhb+)a1 azk ttive forces of F on each other. If the charges are s adxt-t+,*p hok-+yaaqmj z)kr1)b s:eparated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens 8)xu(hiij 9iv2*u yic to the force between them if one charge is doubled, the other charge is tripled, and the separation distance bety)x 8jiv*huci9(uii 2 ween 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 distance2empn/cp79-i cpr;2v grv/l b of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to thep / -9cvpl;pn/e v22rcirgm7 b first electron?

  An electron and a proton are separated by a distack*cg4nqu 0z2qmkn -p,c, j.v nce of 1.0 m. What happens to the magnitude of the force on the first ele ,v kn0njcu-mcpgqzq c4*.k2, ctron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance ofp9ba1b hdvx/osf.9zp optj dn 48,:c0 1.0 m. What happens to the size of the force on the proton if the electron /. oxbs9pn zab:0ho,d4t1dpvpf 98cj is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the centerzrg(w 3hf23if8g,w erpf(ql )u. ,vdy of a square. 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 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 chargy,,hwpr(fz) d3f8 gle rv.(u q3iwg2fe at the center of the square?

  A point charge of +Q is placed at the centroidfbhi 3a2k63ep p; 9zdj 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 magnitude of the force that acts on the center cijp e kdz;3fb ah639p2harge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vb11ic1 s vnw2nector?

  At twice the distance from a point charge, the strength of the elect4ava vq(y; d.*m;ixkm2rl x.g ric field

  Is it possible to have a zemaxf 8upa;o2b 4l4 /nnro electric field value between a negative and positive charp;alxu4n/b f2ao8 n 4mge along the line joining the two charges?

  Is it possible to have a zero electric field value between yfsq8t8 rs3 2dk*7npx two positive charges along the line join8pt73q2fsrdk *s nyx8ing the two charges?

  Electric field lines s0i,7pw5 s0 7tnls lpng)x dx.y zu-)unear psitive point charges

  The electric field shoggnglw l8i .bznf7 3 p9:tgi6*wn

  Can electric field lines intersectyp 6oexu3lz .wj4zsybh8lmf 001sq63 in free space?

  A solid block of metal in electrostanqwend8c7v g. 4c w/v*nszf 15tic equilibrium is placed in a uniform electric field. Give av 1d7/c 5cnqn . enwwgsv*z8f4 statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are 80kogtcssbfvgd;bp/(w dh0/ ;5d(hxeach given the same charge, the h(b h8ctf(s ; bgs5;d/0/ kdxpvw0dog electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniforr+3vu2iihi ag+ k4c 5jm electric field is directed straigr+ u jicgik4ai2+h5v3ht upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in e1.c7fl .t vtt.vye4wha 7ol5xlectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a zf4fx36b2--;ggh6 qta wueqym8ujp 0hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly af;3- q4 amqh60utu 2yz 6fpx8ebwg-jgbove the hollow sphere has

State three properties of con2u 7yv(:muj6b,crjfz ductors in static equilibrium.

State Gauss's law.

  The charge carried by onul6uvy)lfjn 20anf)sm.7m: p e electron 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. How many mor -q8d9vwgwq* /oljck7t :1avi e protons than electrons does this acj8ql ivw7oq/kd*:t9g1-w v piece of plastic have?

  What is the charge o4 ciswkmo*:v8 n 1 kg of protons?

  An atomic nucleus has zhn w j(i/uh47a 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 -4.0 m gm+a1k i/)skmC, respectively. What is the magnitude of the electric force betwe1kma sk )gi+/men them?

  A 1.0-C charge is 15 m from a second charge, and7x6 :t,:js rwmip6t c. dznv0w the force between them is 1.0 N. 6w.:c,w 0:nv6zi s jrpt7mdtxWhat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far t6 v ;eu9 g5a47tylfjjapart are they?

  The force between a h +/8ng,r) 8 ikoyqywhkx:x;d$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apartt 6-l2mdci oyzjc/wo)6u /) ii, experience a 1.0-N force. If they arecj)io l-zimcu2i /6w6/y )o dt moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point mqo:9ygmuedq d p8o+ 6 d9b:tn:-qt 2scharges 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 electrosq 9mpt9:gdq:qeo+8mddb y s-u 2t:6 ontatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2oiahg2 dja 2e6son vcc 1u 8 c,s,*3wk)9n+geo.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 tvg a1+*w sgcn6nke,28o)9j, hicooc e asd u32he electrostatic force which acts on the charge at the origin?

  Three point charges are located at the72fi bcl:eh: ww2no+w following 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 chargwiw+2f72:w lbhen : coe?

  A point charge of +Q is placed at the cente9.e*g9o sq)hpr n tbqz1i 7jb2r of a square, and a second point charge ofqs7.ngzj)1q* rtbb e9opi2h 9 -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 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 +s.b2j)u,h;kp lbg y;3d uqgwis at (0, 0). What is the mag. 2gqyjk; w)h3 d+pbg,sl bu;unitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);.fo2aopcaztz8 , 5;cu Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wzc,oat.5 op2;z cf8 uahat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the m sf f92t,feu(vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitudue2 sfmf( ,t9fe of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Qa jh+n rr-r4jct wm q3s4l9,/l, which are separated by 3.0 m. At what point, on a line between ln,9l4r atm34jhqs+r-wrc j/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 69c.uox9seg8b;v0 dsgj oaw/o / qd*i= 4.0 m. Where on t wvbd ud6;g o./qco9s0*js xa/egoi8 9he x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where caap2qt-r,1t44xb+ wvhbbs ;eon a the wst -2bvba qphxr+;14to4b, ird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of*ezwd*xezv ckw3iq0dm5c2 ,f gkd,57 $4.0 \times 10^{12} \; electrons$ 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 attraction of a fip y4 .u b./gw++wpmstnxed proton some .gutb/n y +p+m.psww 4distance above it. How far above the electron is the proton?

  Two 0.20-g metal spherem4p uh8 aqkyn lxh0+y ey/,6)gs are hung from a common point by nonconducting threads which are 30 cm long. Both ayh n)g ylmh/ y80x4up6+ eqk,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 hasclwa vr 7/gd )jqh. )ye7.nb(g a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from theb77e dy/q )g.( ha)cg. rvwnlj nucleus?

  What are the magnitude and direction of the electric field atj+r ,u1cqjaqnb*f(7u rr f/* j a distance of 1.50 m from a 5 /7ajf 1qbq+*un(, jf*rurrc j0.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the madbuk9vphejd3+ ukt 0n; gpov6l1;, o *gnitude of the electri,ud lv*b+ ek;p o jtn1od 3h690pkvu;gc field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of tbu:k:oc ra9p 8he ele:bo kar:pc8 u9ctric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of t nvv3 ahw af)k (4-u4vko9jbuovz +1f(he force experienced by a 1.0 nC charge plk9+a ka-( u (uvwzv434foh1jovb)fnv aced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance of:hruaqoqr(9v,qd 1,+ auxbd9 4.0 m. What is the electric field at a point midway between the two chargeb,a:(,a +u9durqov9r1h qxdqs?

  A 5.0-mC charge is placed at the 0 cm mark of a meter st yobd5v4d* bzj7gu,i d*ms9y h94.hrtick and a -4.0 mC charge is placed at tybjd5.*vdgm, i7d4hb s4y*9o 9hzt ru he 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed /o /by85 rjio3 )(fqlb5oqfh9gsrdn :at the 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 charges is the electric field zeroyr: ld3bgq oh/ fs5 qj5o)bi( f9/nor8?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = gokb1g )s)eu-, icbfbr9m:1u0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between thebgmeck1ur 9:ui,fo s )-gb)1b m?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m.r7bha6 mb(s q ifny4yxek6(,d/b wa- 8 The lasqebyb4,am 6b/ rds7k(hi f-wa(xn6y8t corner 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 side. Charges are plud74 a gelj+ hmspfmxj9002p4aced at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (0s74j4 2ldah upp+ xf90mgme j1, 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 uniform elect-w*8 l)tmzs0hmp /m horic field. What is the magnitum)0/ htmhmozs*pl-8 wde of this electric field?

  A particle with a charge of 4.0 mC has m5:ly9zcjdc o:0o de3a 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 -;w m6dh:bai wof 6000 N/C pointing downward. What charg awm:w;-bd hi6e 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 ball is play 1y)w + vlsdzyc4p(9pced inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and d1 zl(pycsy)9vp4y w +direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is thegv 83py i,8f o/ pwyprp3+ixloa34 7mm magnitude of the electric field 5.0 cm from the sphere's surfac, iopx of ag3yw7pmr m8p4ip3l/3+8yv e?

  A metal sphere of radi5a 0t65fl( zarsjuw6eus 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0za5w6s5(u ar0tl 6jfe cm from the center of the sphere?