State the law of conservation of electrib e/(fn:ek+i zc charge.

  Is it possible for twow:;pkf fp-w d+ negative charges to attract each other?

  Is it possible for a positive and a negative charge to attract rnrvx 20 y vf0gs64s0deach other?

  A glass rod is rubbed with a piel p3eq :kh7.jnc)h /hzce of silk. During the process the glass rod acquire)hjl:ze /h. knc73 hpqs a positive charge and the silk

  A proton carries a

  The model of the atom shows ab y*t3sj,k*2 weaju -v

  A neutral atom always haik+k5lw (9s ofe;e2ag s

  An atom has more electrons than protons. The at/w7br ul(zgj8b8cww - za c0.kom is

  Materials in which the electrons are bound very tightly to the nuclei are rupyevw;/*t 0weferred to asptv y*wuw;0/e

  Materials in which the electrons are bound very loosely to the* d ;/bw n/,raqpfjqo( nuclei and can move about f aqd/q(op,j w/bfr *n;reely within the material are referred to as

  A negatively charged rod is brought near one end of bu*mld c 42lv;an uncharged metal bar. The end of the metal bar farthest from the charged rod will be lu*m2ldvc b ;4charged

  Sphere A carries a net positive charge, and sphere B is neutral. i-id:*) puztl p1qn uv+(74q bcr2jey They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Whic2r y:v ( pqu 7ji4 -+ztb1u*lqcp)idenh statement is correct?

  How can a negatively charged rod charge an electroscope posit wba5rxjzg ;rp8o.))r ively?

  An originally neutral electroscope i3a ucqz +u0q0hs briefly touched with a positively charged glass rod. The elec+q0z03auq h uctroscope

  An originally neutral electroscope is grounded briefly while v2p; krhw5uqxiv :5 ,) bzr:fja positively charged glass rod is held near it. After the glass rod is removed, wbvvfh 5q) p ur2r:i j:xz5,;kthe electroscope

  A positive object touches a neutral electroscope, and the j( ( pjw. gtoh/:9hxvbleaves separate. Then a negative 9v. (h :(jobgjxht/pwobject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an pl(i3n-5p(lz eqw qw2 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 ball, and stops. The first ball rolls forward, but does not touch the negative object. At no time does either bal3pp(ln2liqwq( e -wz 5l touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the rrv)8f k 5licum8a3 xd82z-1g-u qihhCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are is9keu:g79o udl/ z0tl4 le,nseparated by a distance d. The first charge is larger inl/:io90t 7lz ekle ugn,us4d9 magnitude than the second charge.

  Sphere A carries a net charge and sphere B ise7 ew /;khmt(w4q b,sb neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force bet k;h s7bb/4ee,(mtqw wween them?

  Two charged objects attract each other with a -x.kmt wln 7s;certain force. If the charges on both objects are do-kmt;7 .nlxswubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive fw yl,n/zlfo; )orces of F on nzolwyfl/; ) ,each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What hap0 n 3qpf(htaa9mbw5 s,pens 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 one 39w0(bqsmnth, afa5p -fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of t4zc(4j8cy m9uwq +qp1.0 m. What happens to the ma+4(m qc8cupyq4zwjt 9gnitude of the force 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 o or. t3hc/o08aqcnu31.0 m. What happens to the magnitude of the force on the ftu c0h./q8conr a3oo3irst electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happea1ns2y(lk cpmz8z-lm+ tz0b/d, y ef;ns to the size of the force on t+p dez;yl y1ft(n0,c8szab klz mm2 -/he proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is pln5w*is- lw(lfaced at the center of a square. When a second point charge of -Q is placed at one of the square's corners, iti-fw*n (l5lws 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 centroio;u,sml9r v4 dd of an equilateral triangle. When a second charge oo,4v ;9mrldsuf +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 ezu rof3(-d 1(l3g xjois not a vector?

  At twice the distance from a point charge, the strength of thcc/j w*0d20xqj *paipu mg8b :e electric field

  Is it possible to have a zero electric field value 7j +e6w e;atwubetween a negative and positive charge along the line joining the two cha t+aewj6ue;7 wrges?

  Is it possible to have a zero electriwckr;nk3f4sf jb, /k+7j 2hxhc field value between two positive charges ahnf4b27x, +ch r /jkkfkj; sw3long the line joining the two charges?

  Electric field lines near psitive pol(4wz7 qq/ln-2g.rxbpv-7 eog e 3kua int charges

  The electric field sh/ gwvg+s27i*) is dqqlown

  Can electric field lines intersect in 85 t3 eix+;vtucyw(/sqn;/a 3p+9uq npfj blp free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform el*oaq*2 vsx-7ypn 0 rj ii6x-ylectric fieir qniylj*0*spv oy6a-- x2x7ld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a holld,ncvira .9 mc9ie)d(ow metal sphere of equal diameters are each given the same charge, the electric field (E) midc m9a vi(r ,n)dc9id.eway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a r 116supkml .qee1*0yo5v fg;nh3x x ncegion where a uniform electric ficues qlfmxen 5;yp 11oxhg. 3n 1vk6*0eld is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chargs/app(coa8( 1:ogs9hmys1 .9h7 s zjsguflw ; e

  A positive point charge is enclosed in a hollow metallj ()l;x/, 4 scvivderbic sphere that is grounded. As compared to the case without the hollow sphere, 4vb(jc x d);/ ervil,sthe electric field at a point directly above the hollow sphere has

State three properties of conductors inmb/ cev /2k9ct js6z;n static equilibrium.

State Gauss's law.

  The charge carried by one electron xn5*cxpsw gon f;5: d6cx.2j nis $e = -1.6 \times 10^{-19} \; C$. 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. Hod7(-,kgy adhttquvew 7* :ji1w many more protons than electrons does this piece of plastic haveevki *t ha7u1,7qd-ytgj:d w(?

  What is the charge on 1 kg of protcdolqm9 8i1/d7ghz5 bons?

  An atomic nucleus has a cq;;,vz o 0bbin8o(jdpharge 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 2.0e ypd42n fu4* ic)t6 j-c;jgdj)k 2pvc and -4.0 mC, respectivj4)pj) 4eftdi2cu-n d k2j*yvcg6; cpely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betcie6; mwiyu1 vm(1 -grween them is 1.0 N. What iy 1i 1-6;(wcvme ugmris the magnitude of the second charge?

  Two 1.0-C charges have a force betweetu s)h.h0hymu:jgu g e:i62in e 6uh.2n them of 1.0 N. How far apart are they?

  The force between a xue*a .v;b x9x$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiall.u -(zfznprk ;y 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betwk(uzz -r .n;pfeen them?

  Three identical point charges of 2.0 mC are placed on the x- fifw :3vh:vb2axis. 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 magnituv2 bf:fw:h 3ivde 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 of +2.0 mC qsqr4zd59 aa;w /pv)ghsahn2*q-ux8 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*aw q9h)84qrdupsa ng h a-2vz 5;/xqs at the origin?

  Three point charges are located at the following positio3fc:op7wg eqpjf 4 ue07zzp4+ns: 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 ma f 4z4egpcqu:p3+0z7pef 7o jwgnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a f99o zu (qc+jdsquare, 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 is the magnitude o(9+jdo9zfuc q f 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 (0.30mgvn0f a1 n7lequzf. u12zuq66t x0, x m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What i7mzxeu u n1fua6lg t6,q1.0 fzx2qv0ns the magnitude 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, 0.10 m); Q3 = 5.0 nCa37 b f3k0hn tbo3pfeug2sh0c mk ;y,) is at (0, 0). What is the direction of thot)s 02a hp0k;ugmb3n 3bye hkfc ,37fe net force on the 5.0 nC charge?

  Three identical charges of 3.0 mCltso1gh+p1 oxq(y+ e. are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of ty.+po+ 1tso(lxq eh 1ghe electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m,vd6q n q/e6 tpstnx7,. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the elect, nxt qep,d /t676snvqrostatic 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 = 4.0gb 9opn.le*4zql- gc - m. Where on the x-axis can a third charge be placlpo*bez. l-q9g c-ng4ed so the net force on it is zero?

  Charge +2q is placed at the oriadf 5gk)z3kt(gin and charge -q is placed at x = 2a. Where can a third pof3 tdg(kzka)5sitive charge +q be placed so that the force on it is zero?

  A copper penny has a3f(gfu. 5ez re mass 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 gcu nfhj4qs2m p*fcu )8y c+p,1z2g0chravity by the attraction of a fixed proton some distance above it. How far above the electron isc2p fz2418nyc gu)pcf0 h *c q+m,shuj the proton?

  Two 0.20-g metal spheres are hung from a common0u 44tu4r/a 74sv/7yhg6z ay eqp9bolik3dsd point by nonconducting threads which are 30 cm long. Both are given idd37t b4v97/gk 4/sayu0o4p6u ehs l 4dryqaizentical 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. Wt9fkinw. fk9; 8u-v dvhat is the magnitude of the electric field at-9fnk.kv ut;d8vw9 if a distance of 1.0 m from the nucleus?

  What are the magnitude and direc7q 2 ,6dnnewbaon7 x ,2zg2aprtion of the electric field at a distance of 1.50 m f ,2 6n2x nwga,andr2poeb7 7zqrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charg (rg qyp krm tp.ulfh8e/1.v24w1l xq:e. What is the magnitude of the electric field at the location of the test chargee uy8frplk1wx q4(2/h.vlmtqg. 1rp:?

  A 5.0-C charge is 10 m from a sml bjji kqpcr8/rb4(g6t+r10rmz5w g- all test charge. What is the direction of the elegr-kbi4rt+ cj r6 15/ lz0jgpq (w8rbmctric field?

  A 5.0-C charge is 10 m from a small test charge. Whate)f*ihws bp(rsc3 -zz)5aay+ is the magnitude of the force experienced by a 1.0 nC charge placed at the locapz)*ehy- )iw5c 3rfzb s( as+ation of the test charge?

  Two point charges each have a value of 3.0 C and are sepa4 q qgpal7:hh1rated by a distance of 4.0 m. What is the electric field at a point midway betw:pg a7l1 4hqhqeen the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chargfxz 6 83 dt16je)w+ 0l2zfziplh9hdste is placed at the 50 cm mark. What is the+3zs dwz6tll8z 1ef0h2p 9 t)hx6djif electric field at the 30 cm mark?

  A 5.0-mC charge is placed at trjuqz6t1ar),2ntb- ar* tue 5 he 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 zer,ba5 1* )r2t e n-zt6uurtajqro?

  Two point charges of +3.0 mCxo33qv1nt jm d23z;0i f;f skt and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the nid23tvqjtfmk 3of s;;x13z 0point midway between them?

  Three 3.0 mC charges are at the three corney3wfn)q -o :frrs of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.yo)-:3rqffnw

  Consider a square which is 1.0 m on a side. Charges arerz.sil3cx *--6qui ue placed at the corners of the square as follows: +4.0 mC at (0, .u3si xcizq-elur* 6-0); +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 p wu/z/kn fs 42djf2-x:r s+boklaced in a uniform electric field. What is the magnitude of txj-kf2 krnsw :bo/d 42u f/s+zhis electric field?

  A particle with a charge of 4.0 mC has a mass of 24h2l jiva 8tp6vmrg )$5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placedwz: zzdd f8gvx-dh/5*,vt ;l*+zmjtv in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball fzfl:,* hw5 ;vz-v zt*g/ dz+jv8dmdxtor it to be suspended?

  A foam ball of mass 0.-+ qzvgk. o bx,fcko p6xz15k7150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and directioo.pkxb - kg16qko5+c z f7,xzvn of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is c)-54jtldgmt 4q/.xg 6 pk qnk5fir:othe magnitude of the e) t m qc4/jkki:tgr6 5x.onld -5pfgq4lectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a53u5qnpomzw* - ) vxfte 3vp+a charge of 3.0 mC. What is the electric field 6.0 cm from the center o53)ux5+3q pv wzoanv pf*e-mtf the sphere?