State the law of conservation of e2-5jqn)fwv. s3 )w7huezuqb slectric charge.

  Is it possible for twfzp(2a 8dw3/ hns k5hl// hptno negative charges to attract each other?

  Is it possible for a positive and a negative charge to atxs(cbb 00e4.e6y/7y-rtnd gy4vmru qtract each other?

  A glass rod is rubbed with a piece of silk. During the process 1kq y b44d;6lrt9zpds the glass rod acquires a positive charge and th l19s prqytd6;zbd4 k4e silk

  A proton carries a

  The model of the atom k4 zj7uszn9 5hshows a

  A neutral atom always hasraw8iha2-d k2

  An atom has more electrons than protonssns +tc2w. 0wfuy, y/p. The atom is

  Materials in which the electrons are bound very tightly tbt.(c,7uf*hv;g fb4qw c kil (o the nuclei are referredcci,bkfq *t4.h (l;(gb7u vf w to as

  Materials in which the electrons are bound very loosely t 4(e1 0 kxlvao+uxmo/zz+ g9yvo the nuclei and can move about freely within the material a+mxy 4 kv+/ zavux9e1lz(oo g0re referred to as

  A negatively charged rod is brougyqoynbvcz:fh u)) 5n7xcn51 )ht near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be charguz1)5xhnnb co) )yycq7v :nf5ed

  Sphere A carries a net positii4r 1etlvr*1p ve charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly i vl11ep*4rrttouched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an eleq t4gwkro585actroscope positively?

  An originally neutral electroscope is briefly touched with a posit*m 5elhgt;d z t0g2an;ively charged glas;02tatlgnme5dh*g; zs rod. The electroscope

  An originally neutral electroscope is grounded b mk73k3np qykl b-6c+eriefly while a positively charged glass rod is held near it. After the glass rod mky6kc qpb3- 7n3k +leis removed, the electroscope

  A positive object too;w okkp8k2 w9uches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electrowpow ; 92kkok8scope, but does not touch it. What happens to the leaves?

  A large negatively chargedv+hk:/.hwzy kcyqj*jdb1)/wk r+-q a object is placed on an insulated table. A neutral metallic ball rolls straight toward t)a1.w- +*h:y /jvhkyq jkc +dwk zqr/bhe 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 ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units o(kj.ge lhg1 oc2u9 v-ikz/ 6 yiu4y7ntf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge i/t+uceb.vo5n s larger in magnitude than the second chargtbv+ n5 ec/ou.e.

  Sphere A carries a net charge and sphere B is neutral. Thi *jgsm+ ht;l3kv;g /qey are placed near each other on an insulated table. Which statement best describes the gj*;3qimgvt l/kh s ;+electrostatic force between them?

  Two charged objects attract each other with a cers c .eqf+yet40 w2.hbitain force. If the charges on both objects are doubhy si.2wfe0.4c tbe+ qled with no change in separation, the force between them

  Two charges are separated by a diaz*ow mhzfl .jdij/lhm2r83o2r5i/3stance d and exert mutual attractive forces of F on each othh58/zild/jhw *r2z.2oi3m j a3olfm rer. 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. 4mhrp x4+u+ fsWhat 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 one-fourth its originap+4+smhxf4 rul value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens te*vjqv-o1q b6 o the magnitude of the force on the proton if a second electron is placed next to the*o e b-jq1qvv6 first electron?

  An electron and a proton are separated by a distance of 1.0 m.b,ylxk;8hbf2 ,n(q )*xkba t b What happens to the magnitude of the 2f;lktyx(bhn ,)qb*xb8 ,ba kforce on the first 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;u jj4l toa8 6(k **erwcj;epqwo 3)fusry i48 happens to the size of the force on the proton if the elwjjfoeep c*r q6ws;u r8 )4yti;kju3l( *ao48ectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. W7be0a p;b b)ljhen a second point charge of -Q is placed at one of the square's corners, it is observed that an electros0ebbb 7jpla );tatic 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 equilateral triangle. Whenimhi2pb9*hpccn4l hu /3e/ ,t 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, c 2u/lemnch4 *b9/phi th3pi due to a third charge of +Q placed at one of the other vertices?

  Which of the followingjq h 5u+)q;n1pe98bg7m/f:m ubou jb e is not a vector?

  At twice the distance q z);l3yodum- from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a ,g34w9qqcfm*:nskb ig w8 im7 )jl :zmnegative and positive charge along the line joining the two cha79 j iwzm w:kmbqn*g8f4il q,c :s3mg)rges?

  Is it possible to have a zero electric field value between two positive chargef94h3m jfuv*a s along the line joining the two *uf49a3fmjhv charges?

  Electric field lines near psitive podrymt9n,oc,q+q - z+xint charges

  The electric field shown gbzm0,a-;7qp 5y8jy2 ujb xrf

  Can electric field lines intersect in frc7zbjz9 e) ifczn:2hgd mb 9m3.6,xuw ee space?

  A solid block of metal in electrostatic equilibriux,9b305dceu ao rj ;i6mgd:tmm is placed in a uniform electric field. Give a statement concerning the electric field in the blockg x9bd5u,d 3imoa:m;tjce6r 0 's interior.

  If a solid metal sphere and v7r bl0 pq1yd1a hollow metal sphere of equal diameters are each givly11v d7pr0qb en the same 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 rpc5p0bl,lyf2eumk 9+efx gv.,8f -f r egion where a uniform electric field is directed straight upward. What can be said concerning the ch -e2k5be rflvfu mc9+.xplp80yf, g,farge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charu raz)/ 16rmrrge

  A positive point charge is enclosed in a hollow metallic sph46cni61*jd. w wsnnxhere that is grounded. As compared to the case without the hollow sphere, the electric field at a 6scwn.6hn d41 xni*jwpoint directly above the hollow sphere has

State three properties of conductors in static equilibk1dvo4 j wb55jrium.

State Gauss's law.

  The charge carried by one electron is kyo8h9k bib;; $e = -1.6 \times 10^{-19} \; C$. 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 mcy.i) v:kv jmqf6t9x6C. How many more protons than electrons does this pfi :qm6t).96 vjxcykviece of plastic have?

  What is the charge on 1 k,16ezb lodtnhbp yl*8 4lgq ):;0 iovrg of protons?

  An atomic nucleus has a charge of ,u8saq ua)dj6.kt k np,d9i p:$+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, ha 4cjh.b sr3+pzve charge values of 2.0 and -4.0 mC, resbcrs4+ph. j z3pectively. 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 between them is -*zfqt rd6q2i 1.0 N. What is the z2r*6it dfq-qmagnitude of the second charge?

  Two 1.0-C charges have a force betweh sqr 8e siey2)jg-tv:0o0ye0; io.s/ bmtqx 0en them of 1.0 N. How far apart are they?

  The force between a v ;tur+7hiyj*s0 hgb:$30 \; mC$ 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 force. zn8pf/ aou,v ee p-:o:If they are moved to a new separation of 8.0 cm, what i :: a,eop-vz8 uoep/fns the electric force between them?

  Three identical point charges of 2.0 mC are pllgflj/k l07d, 6j r)jmaced on the x-axis. The first charge is at the origin, the second to the right at x = 50 mfllj lg)k7 j6djr0/ ,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 place*p8y feb5mlk)j jnre,f9 u;c8 d on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to thel f*m88 j,bk c; u9enejr5yp)f 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 origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at.l :b (q;j; jvyynj*ro x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 .rlynyj q:( j;;*vjbom. 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 secmsr4jmlq ri1 (ia2d )2x*a5b sond point charge of -Q is placed at the upper-left corner. It is obse5m2rq2s(1m irj)sd*xa4ail b rved 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.-1lug kjw r5i-10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC c5ur 1lk-wgj i-harge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is se314 qvhl 6eck+mx4rat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of theq cm44sre6x3h 1+ve lk net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilaterav4thyxx- 14 vhl triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the4vh y4tvhx- x1 charges?

  Consider point charges of +Q and +4Q, which are separamk w9t qyo(hsa94 59mvted by 3.0 m. At what point, on a line between the two charges, would it be possible tom sm q9v(k94hyat9 ow5 place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at thq, )a0.2z*jx*e qhg 1gubcyxg e origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force ocy,z*x ae*2 jggbhuq .)xg01qn it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where uq:adjsy-r-o9dpi7 oqs 3 v11can a third positive charge +q be placed so that the forqv1j sqd91 yur7oo- dpi3a- :sce on it is zero?

  A copper penny has a masx nk13dgo9incd 03ne+ 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 ftdfjza8;,l im5 xp42jorce of gravity by the attraction of a fixed proton some distance above it. How far above ttxd2 5piafljzm8 j4,; he electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducuv1ky e3 ee*;pm3 tr:8dv3ai qting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the k 3:r; vpye1d i m3ue3atevq8*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 magnitude of the electrieak-j;/6jmk2e pvz 7wa3 qtf9c field aetkw-79p efq3maj/j2ak;v6z t a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distancg5 hssrqqp y(1y7c,ivf0 w ,hzr)g;/jd2g fq:e of 1.50 m from a gjrz0sf; )q1 gw rv,7p 5gishyd2/yq ,q:h(cf50.0-nC charge?

  A 5.0-C charge is 10 m from l u vothm6:t;3a small test charge. What is the magnitude of the electric field at the location of the uotl;mvt6 :3htest charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dire/a1 08( -zjy yeik4gn4nslcr5)s xmi uction of the e8xze-iy m41kna)4g(ry l cjs 5n/ u0silectric field?

  A 5.0-C charge is 10 m from a smalt0f*bsrqbd 8 4zxk 0j,l test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location0 kf,bjrzq4tx dsb*80 of the test charge?

  Two point charges each have a valu42gf; pdhe.zd5h:w1d*vxoa0w t1 dk ue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway betwed0hpx.* zkvd a:wd ot;dh124ewf5 ug 1en the two charges?

  A 5.0-mC charge is placed at xn(avz (5lk7uthe 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at zn 5 kv7l(axu(the 30 cm mark?

  A 5.0-mC charge is placedx 7a 98tv) bvcnkvpm88 at the 0 cm mark of a meter stick and a -4.0 mC charge itvn 889vbca7 pxvm8)ks placed at the 50 cm mark. 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 fdq 2cvtr-h-j-. 2y re(gw8d nare placed at x = 0 and x = 0.20 m. What is the magn -(2gew 2dtf-r.vrdn c-8j qyhitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the kog 1h(p 56dtg mdsi7)three corners of a square of side 0.50 m. The last corner is occuppdh1s(i6m)g5d o ktg 7ied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1. hvfcs1xw -vlty. g(qt-sw)5l(c3b- n0 m on a side. 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). Whatv -c bw gtwhvs c)fy5lnls xq1-3t(.(- 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 unhk. a:ih6q ,rniform electric field. What is the magnitude ofhh,a. q6 i:nkr this electric field?

  A particle with a charge of 4.0 mC has a mahwqf1 :qe9 vhhtc.r *x7b6ys5 ss 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/vadg nn-u;e8l tk,x 2 placed in an electric field of 6000 N/C pointing downward. W u nn;x t8g,adek/lv2-hat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carriesnf;cre6qsy x2vcun nd-cg epjx,)+)1 .+9vao a charge of -2.00 nC. The ball is placed in)+cf9r ocnvd j);ugye,sx nepn+c.a16xv2-q side 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. What is the +97sq 8-hc (hr6 rsdk4ma vwulmagnitude of the electric field 5.0 cm from the spherehhcw-8asu d7s 6r4l9vk q +r(m's surface?

  A metal sphere of radius 2.0 cm cadfo /w/ozk+p 1k:i6owrries a charge of 3.0 mC. What is the electric field 6.0 cm from the cen +dwof1 ooz6: k/pw/ikter of the sphere?