State the law of conservation ou8pvej-7 7t:w0qten rf electric charge.

  Is it possible for two n:*m*b0yt1)dpyvjlo)d91hsc/ za y dpegative charges to attract each other?

  Is it possible for a positive and a negativ07ci/fnb wqc ).9.n9r nimbuo) p(zd te charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rb a3)svwml) v2dotu /w-2s(whod acquires a positive chts2)v-v2u s/wm ld o )3aw(bwharge and the silk

  A proton carries a

  The model of the atozr5lc3d * 2l*aony-ubjoql wg- ;1di;m shows a

  A neutral atom always has/j33iqekum9*m1srl hu l3 t(u

  An atom has more elecw dezwag46 amec52+a+trons than protons. The atom is

  Materials in which the electrony7n4cyu o+,uts are bound very tightly to the nuclei are referred to yy,ton4u+ 7u cas

  Materials in which the ele+n (;ltf9 co6h+meaomjoc ;p+ ctrons are bound very loosely to the nuclei and can move about freely with 9+olpma(eo; j;hcc++oft m6nin the material are referred to as

  A negatively charged rod is brought near one en 4kt,xio pxf*,4 .1qstb:neuad of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be 4b,ketx , *spx 4t.iao1qfu n:charged

  Sphere A carries a net positive chargr,hm i8d (x qn0gm:m2be, and sphere B is neutral. They are placed near each other on an dq8ghb0m i2 mr(:x,nminsulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscog4jc. 6g(ou: )gxkvnope positively?

  An originally neutral electros* dz2aebqz/ sf8 5u(wpcope is briefly touched with a positively charged gl/ae (b2uz5dpw8 fzqs *ass rod. The electroscope

  An originally neutral electroscope is grounded briefly whilelq r c/q1 e(dhp(xl:s 9(xl/hf a positively charged glass rod is held near it. After sq :( /l(p/hd 9eqxcll( fhr1xthe glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the la2jjp y+g1zy9/h/v apeaves separate. Then a negative object is brought near the electroscope, aajj91y z2/vpg /py h+but does not touch it. What happens to the leaves?

  A large negatively charged object is placed j1ag**2/mnit( o:rsrhwz bcu; i +lm* on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metalzu/a **1;n+ (c* t 2g:hi lmrobsirmwjlic 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. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb g0 bg;+ymj*i .z,es qykcx zr:y0h y+oc1,jv;constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first c/ws)-ay4r yodharge is larger in magnitude than the w/os4ay- r) ydsecond charge.

  Sphere A carries a net ch0* 8::zirk, /yvcc 8o5micueko5 qikparge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatz,8eyk::5ooir0c/ kuqp *ic 8ikmc v 5ic force between them?

  Two charged objects fg1fj 4c -*-r+a wz8q upa3fjaattract each other with a certain force. If the charges on both objects are doubled with no change in separation, the force b4faw fg3fa-r ca-+u* pj8jz 1qetween them

  Two charges are separated by a distance d and exert mutual . 2l6g6 dscnxr39 y9+aljdaul attractive forces of F on each other. If the charges are separated by a distance of d/3, wndaldgy l xr 6.a u29s96+3cjlhat are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the nyjfpjlb+9:p247ot k force between them if one charge is doubled,2:kjy7p4j ol+ bp 9ntf 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 distae ei5nm)ot5ik8a ,b8k nce of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed n5 teioi8,k 8 ekbm5)anext to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Wh wo1iwht9 6*j+4ba ,eljke/ ppat happens to the magnitude of the force on the first electron if a second electron ei ,* ot4wbkpjp hwe+96l1/jais placed next to the proton?

  An electron and a proton are separated by5)0k*dvwrek l7 2/o lllb*+tadf3 r8nu/ eltq 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 closer to the pldfn*k /d58vel+a)3 rbq l7our 0wel2t*k/tl roton?

  A point charge of +Q is placed at the center of a square. When a secona16f: r*rem:2 svxc or9)fu5 sgyc+iy d point charge of -Q is placed at one of the square's corn6o:as)f*v5y+: euir9 c1ry rm2f gcxsers, 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 charge at the center of the square?

  A point charge of +Q is placed at the centroid of an eqn)1ivcpj -jiw(*qo7 i uilateral 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 charge due to a third charge of +Q placed at one of thvp*qo1i(wn 7jiic j- )e other vertices?

  Which of the following is nnrrxcsa)a.0qq19 k /c7le ,lz ot a vector?

  At twice the distance(pbe z8tpden )1)gx 5p from a point charge, the strength of the electric field

  Is it possible to have a zero electricq*uicfd22zj kb6b0nsagf6 3 - field value between a negative and positive charge along the line *jbzcu2b3kns2 f6f0a-qi d g 6joining the two charges?

  Is it possible to have a ze5 dak q d7t-yje-,k3o*/wmfgero electric field value between two positive charges along the line joining the two w-gkmdd teeqo3k y,- a f57j/*charges?

  Electric field linesk)s sz)5 n uvv f2pmg9oaxi*+8 near psitive point charges

  The electric field sh hjo 5m+v2yq5cown

  Can electric field lines intersect in free spacz 5qn/ly:zy *se?

  A solid block of metal in electrq s2,fk 66cii/ wg ;)t+ydot 6ffk5girostatic equilibrium is placed in a uniform electric field. Give a stat fy ,6t)i/ci6twfg6 +2k5o drsqkif;g ement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eachdy;gn(5v7jjzmw;c3l0 ol/ uob yre62 given the same charge, the eleg;7 o0 6 dyc/3n2zj5; l(rmyovjbwu lectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table inia zhwk*nc+ gw;itt wm)/)e 41 a region where a uniform electric field is directed straight upward. What can be said concerning the cht ;4hwm)+tc/wzane*gk i1)iw arge on the block's top surface?

  If a conductor is in electrostatic equilibrium nepusa )4qm/;cqsey,,s x;i e8zar an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gr r42rmytrtb.)ounded. As compared to the case without the hollow sphere, bt 24.r )myrtrthe electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriuml4sb/p6w wj s.yszw95.

State Gauss's law.

  The charge carried bykk u47.rxcv8 z one 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 more protons than7erf*as di,8-kkptfhqkb6 9- electrons does this piece of plastic haveb8a6--sft* p,i7qk k e9rfdhk ?

  What is the charge on 1 kg j;u-xy**n hinnv 9uzxpb c+).d noj+*of protons?

  An atomic nucleus has a ).f 4 +/d)zgwgls tj2 qrqn5gz7q l;hkcharge 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 val+6 qfjbihf0r+3ztw 9k.kzp8 :*v rfvjues of 2.0 and -4.0 mC, respectively. What is the magnitude of the electrqw+ipf:*j .rzjz b3+96vk vf08htk f ric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force bm * waemgxcv2iz-y; .,etween them is 1.0 N. What is thege.-yxi w c;*amvzm ,2 magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Htbu .l,ga5 2lkow far apart are they?

  The force between a w6re8jwh8och hjcgehz :q /6i 06:f p4$30 \; mC$ 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 1.0-N fonunq aj.+ skti.wtt4u uig,3-3jdgn5x:5yk 8rce. If they are mojn,3 twt43x dk q j nnsktg5u:g5i.ua8+i- .uyved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point n2t/u x-y+x /j0,yc4jkmf 6pbsws,p kcharges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the rightynubw f0ypj4jsk-sc ,x6 ,+/mkp/xt2 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 origin?

  Three point charges are placed on the x-axis. A cha vnca u)y(54 xx)-wgqbrge 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 electrostatic force which acts on the charge at the oribvy)xn)g q5w -u(c x4agin?

  Three point charges are located at the follo5dzp6 ,l0agbxwing 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 charge50xb dglzp, 6a?

  A point charge of +Q is placed at the center of a square, and a seuoi3w7 7kn6otcond 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 is the magnitude of the force that acts on the center charge if a third charge of -Q istoi7n 6w 7kuo3 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 n3vr9 in* agwzfo. m5.gC is at (0, 0). i n w*fmg.a3z 9gov.r5What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m.r9slf;z wuptf 72v2b , 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction22f;fz9 u 7ltpr bvws. of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral 6b +gr(jaou 4d)hy, bbtriangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any o4b,jyu)db bo ga6( rh+ne of the charges?

  Consider point charges of +Q and ,1s ldbasg kgz v0:2ne7+zx5i +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge og 5b1kx7ns zae :isv0,l+z g2df -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 char1 - y9 oy;.jd fr7o9)kao ctrlsm4rv n.a)bw+pge is at x = 4.0 m. Where on the x-axis can a third charge be placed 9vy ob.wak4y)j mao1 n tro9-l+ )dpc.sf7rr;so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q isgmj 5ww,,oid 2- -;w cc7jdyol placed at x = 2a. Where can a third positive charge +q be placed so that the force ono; 5dy-cwmgjc iw,2 7,o-wjdl it is zero?

  A copper penny has a mass of 3.0 g. z.i9lkz l2jp8A 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 (f/rbjgwb tt(t ;x6i9the force of gravity by the attraction of a fixed proton some distance above it. How far above the(it6wfxt;/ jb(t b9rg electron is the proton?

  Two 0.20-g metal spheres are hung 03vg37fbly8urr wu i)9dt7yifrom a common point by nonconducting threads which 0 3bv797 i8)utydw3iu lrfygr are 30 cm long. Both 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 is the magn1o1(*m/qqcbnt:fbf - qr/vo a: s:pfm itude of the electric field b1ma bv1:tpfq-q: oc so( *rfm :n/q/fat a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.50lbbdcb- w1, 7y;hv9x e7q k;nj m from bebcvl,7jnh1kqwy79;xbd;- a 50.0-nC charge?

  A 5.0-C charge is 10 m az nhd 34gkjat)+6p ,fu e;j)vfrom a small test charge. What is the magnitude of the electric f4t+f hp;)g6k)eauj3, dva nzjield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direc ,ahtq ys(-/8xre+w fgtion of the elec / tge-8+qw,xs(rahyftric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnifzyr7xhs(2 +atude of the force exh2f+ azr7(sx yperienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a v 2x5ac+:f c) i y2trzawuycu,*alue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between thex2aycf:y*z,2)wcrc tau +ui5 two charges?

  A 5.0-mC charge is placed at the 0 cm markb7o1 tds6ovx 5hyleu:bk, ,h, of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Whb,lohb,71sy,k e6 ohxu5d tv:at is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of io epc, q*a3m6a meter stick and a -4.0 mC charge is placed at the 50 cm map63e iqa,cm *ork. 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 = 0w1f(a3r2p3 bdm0 y pcw.20 m. What is the magnitude of the electric field at the po21pbydrw3a(3 cp0 mwfint midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.5qh .9me 8b, d0h/lujpl0 m. The last corner is occupied by a -3.0 mC charge. Find the electric fieldqj8lm/le hdphu,90 .b at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at tg i*g3w) 9hcydhe 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). Whdyh3g w c*)i9gat 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 electrqxz7 lk gz:n+ fa.qn+;y5) tdmic field. What is the magnitude of thq xzz.n ; f7ygq :+5kmdtanl+)is electric field?

  A particle with a charge of 9lr 9e/ex vq8i4.0 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/z*.6zjz c-bls (uejy8+(eml fC pointing downward emjzzj8 (yl-l* .fbczue+6( s. What charge 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 pfbjkx9 3l- )fnC. The ball is placed ins k39-b)xfpfjl ide a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. +d msv )2cs:d4n gnfj/ What is the magnitude of the electric field 5.0 cm from the jn :n2fv+ dgs/4) mcsdsphere's surface?

  A metal sphere of rad9rcn fn 0,thc3ius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cmnf3,nt 9c crh0 from the center of the sphere?