State the law of conservation -oty1k-pr 0c*s+ dylnof electric charge.

  Is it possible for t(je5vz9)4zg p6b5 f vho (ubfswo negative charges to attract each other?

  Is it possible for a positive and a negative charge to attract t9dkjxs576. xatkj8 r each other?

  A glass rod is rubbed with a pik+,t0ent p* ynha:4. mrwl 6iyece of silk. During the process the glass rod acquires a positive charge and thettm:6+,4elw*yrk iyhp an0n. silk

  A proton carries a

  The model of the atom showgi;nb;+ubsze eb) q7* s a

  A neutral atom alwayt 1w: v lehqut6d,g/k5kot;w (s has

  An atom has more electrons than protons. The atom i )/zwocc5o znio 7:ps:g /n)ags

  Materials in which the electrons are bound very tightly to the nuclei are referrt0kpn fs;-b5xebf-t ps x05;nkd to as

  Materials in which the electhy, (ath1 1fkxrons are bound very loosely to the nuclei and can move about freely within the material are referred11 ,ktxyahf(h to as

  A negatively charged rod is brought near one end of anstwts5 mhc+l q0v/-1w uncharged metal bar. The end of the metal bar farthest from the charged rod will be chargesc +s-/l tqhwtw01 5mvd

  Sphere A carries a net positived c;w *7ip/0nzutt jm6 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 grounded. Which stct6 u 0ijdpm z*/nt;7watement is correct?

  How can a negativelyud1b1m prak:7 charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touchq d .p(.*sjsgmed with a positively charged glass rod. dss j*gmpq(.. The electroscope

  An originally neutral electroscope is gr h(8xfx1 1zo,p,nw+qp acmo/u ounded briefly while a positively charged glass rod ispxfq+1xuoa p ,z( /w 8mo,cnh1 held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electrosce6;(oeew+mj4pdf:r ffl,+a2zeq c 8 4e0vnxuope, and the leaves separate. Then a negative object im0jfv 64e( qx l2f+oe:;p dne4 , zc+weufare8s brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A no7j:bt39 6ytx;fu d:ogde+ r beutral metallic ball rolls straight toward the object, but stops before it touches it.e9d;bo7 xfd :+tty gj:buo36r 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 of t g sc9ksnutkavf in 2wl5( *syxl*w(+65-cm7whe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects alk qvos0ppc0t5(8 i 4o px3d4rre separated by a distance d. The first charge is larger in magnitude than the second chapqplsk4vd403otxi( 08po5r crge.

  Sphere A carries a net charge and sphere B is neutral. Theyg rrx9*kihotqa *3s-5 ynl.(e are placed near each other on an insulated table. Which statement best describeqayel t5gnrhs( 9*r- .oik*3xs the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charfgx cj416arz) syc/uk ;8d-nl m7p6xhges on both objects are doublelaxrs 16/k8xmj uh- ;gp4cn7 )dyf 6zcd with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces o*()2 keelfluef F on each other. If the charges are separated by a distance of d/3*ukle (2) efel, what are the new mutual forces?

  Two charged objects attract each other with a force Fr.x9xn ju* e-e. 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 redu.x *- ux9eejrnced to one-fourth its original value? The force is now equal to

  An electron and a proton are separaipml sz0y1i4 4trf,a+ko8i mr 2m)+mhted by a distance of 1.0 m. What happens to the magnitude of the for+ r y4p khs4of0 )m82i1i,z+itmmlamrce 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 1.0 m. What happ fesyda24 a4yq1mc( :mens to the magnitude of the force on the first electron if a second electron is placed next t (4asey dcq:am2y14m fo the proton?

  An electron and a proton are separated by a distance of 1.0 m. n9n*d*(3b;awo sxi6 z qmh)eej:s2yyWhat happens to the size of the force o h*(nbz2y ;)9je*qa 3ss d 6ymewox:nin the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Whe2jd z 7h)tj(;x bknp.z s2zd4xn 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 squarzs dp.4b )hndxjt2;2kj 7zx( ze. 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.wc od,d.n6g4w u -k;mg 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 place k 6w4.,n;uco wgddgm-d at one of the other vertices?

  Which of the following is not guh+:k*qshec/y06 ln-.u g uxa vector?

  At twice the distance from a point charge, the b 5vu6/si:x:y)zhbswhk,i- u strength of the electric field

  Is it possible to have a zero electric fpn7m1q rhx3d3 duw5 jaf1nt8yc 7u;6jield value between a negative and positive charge alon1f 8 7xw cqatnn3m5rud;u3jhpj dy617g the line joining the two charges?

  Is it possible to have a zero electric field vae9fs; f6uw9(myguf(c6 p et/x1/qjftypn7 :ylue between two positive charges alonf9px6myg eypjsqu1/t( /;w e6t9 (cy7:ffunfg the line joining the two charges?

  Electric field lines near psitive poix;hs i1-uujxvo04/kx;o4+wq o uka8 gnt charges

  The electric field showk*w*:o 4j orxmn

  Can electric field lines kp7jk ncq24;8 dmg4ciintersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a zm jw g fss,3i;/*phs)hb( 8rguniform electric field. Give a statement concerning the electric field in the 3ggsm,b8 z(*hhws;/ rs if)jpblock's interior.

  If a solid metal sphere an. aqn9s hh+em. 6hgr8w5ez s.zd a hollow metal sphere of equal diameters are each given the same charge, the electric field es +reh8aqwz gs .z.hmh5 n.69(E) midway between the center and the surface is

  A cubic block of alumi g9s,kadpj3y xb:z /a/num rests on a wooden table in a region where a uniform electric field is directed straight upwa ap/,dzsk:9b a3gj/xyrd. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an e lz6pp4anb).flectric charge

  A positive point charge-bht ysi54tu 8 is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the hit -su4 b85ytelectric field at a point directly above the hollow sphere has

State three properties of cod v+e8 e (lxx3vb.2lrdnductors in static equilibrium.

State Gauss's law.

  The charge carried by one el,vp *n.txo :j hj4j-hzpj+o )xectron 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 ned.6si4y84(hdq haoqepjr3u; t charge of +2.00 mC. How many more protons than electrons does this piece of plastic havju doq(a; qh.6drs4hyep43 8ie?

  What is the charge on 1 k p;1tl*i;w dimg of protons?

  An atomic nucleus has a charge9ibj3urcn9rq5 6jf oz8t ;em9 of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, se6csom 8(lx/qgparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the eles/m x(ql8go 6cctric force between them?

  A 1.0-C charge is 15 m frs-ab +cxoxwjj p,t-88 om a second charge, and the force between them is 1.0 N. Wb8w octp ,8j+s-j xxa-hat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apaxl w-a apcy-,+rt are they?

  The force between a aiq2w-m* mqxdgs b05 a 8hzh( x8r8lx-$30 \; mC$ 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. If zuw w9yw*qlkj)bk0* 7 they are moved to a new separation of 8.0 cm, what is the eleck b y*)kw0l* u7w9qjzwtric force between them?

  Three identical point charges of 2.0 mC are placed on the xq .2vhqe2ko+cgil 98 r;exx;bb,h:vm-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+:v klb,v.hxe2qoi;;x h29b8rg q ecm magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. t5lm hmtb6)xi2+ g bg+ A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cb5 +)b6m mhitg+ xt2lgm, 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 loca;p6:am u cb/u*io/rty ted at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.0ru;y/*at:po 6i cbu m/0 m. 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 second point c hk;oct- *tzju)0hsafvs t8a( 0 g1xg,harge of -Q is placed at the upper-left corner. It is observed th 01 f azv kushot a*0;jt-(c,xt)8sgghat 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)-sheg rn /1k(p; Q3 = 5.0 nC is at (0, 0). What is the me( rhksg-/ n1pagnitude 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, 0.10ho ;98 /sc/ vnrmhyb-x m); Q3 = 5.0 nC is at (0, 0). What is the directi9rchyvn -8 mb s/o;/hxon of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilajp y8pbwwxxdn :48/8/b ouf) rteral triangle which measures 30 cm on a side. pp4b:wou byj/f dwn8x8/xr8 ) What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are+h)m0cler8 nvm wj7ds;m h,+ q7nt,rk separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would bh)nsnm,w+t, kc7mvd0lqrr+ ;h7 em8j e zero?

  A +3.0-C charge is at the origin and a +9oh sf;v3h-htsrt j:r+a:6z 2e.0-C charge is at x = 4.0 m. Where on the x-axis can a th:-jrtzs6:2h; hharo +f3 vset ird 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 p/nvkp,57ree nedwcxb91r- + can a third positive charge +q be placed so that the force on it is zeeecx- bke ,nw/ 7 pp+rrv59dn1ro?

  A copper penny has a ;wzrl vritz26 lb09k.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 gravity by the attractiq1 uj*re7o oi*n;e x;oon of a fixed proton some distance above it. How far above the einxor e*1ouq;7o e*;jlectron is the proton?

  Two 0.20-g metal spheres are hung from a common usa8e1a2 1rub point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electaes 218a1bu urrostatic 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 magnitude of the w38pndcgc2x( electric field at a distance of(cnx3c2g d w8p 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.5b751 utlt(tte8 p*ln4zf+gol 0 m from a 50.0-nC charge7l1 putle *f(o t5+btn4l8zgt?

  A 5.0-C charge is 10 m from a es7 uljh+a+62cmryz087n p:xiq4l crsmall test charge. What is the magnitude of the electric field at the location of the tr 0cuelz8xircma sn4j2yq+hp+67 : l7 est charge?

  A 5.0-C charge is 10 m from a small test charge. What:39 jmoi1agdu;owu184ziiom k )imr 7 is the direction of the electric fiea zdijmi1g4 9:1ou;8uk w3i7m romoi)ld?

  A 5.0-C charge is 10 m from a small test charge. What is th2h0 eh9vzl*wve magnitude of the force experiene2*hvwvlh90 z ced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C an0*0d0vm vuv xed are separated by a distance of 4.0 m. What is the electric field at a point midway between the two charges0m0v0vd*veu x ?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick ag- eb.al8exgn,te7*c z 8zn3xnd a -4.0 mC charge is placed at the 50 cm mark. What is the electe-tez88la3n7 ezn. bg, *xcgx ric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4. liyi- m 9+04kxm)vitr-eu 3uhl36ubx0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field e3il-r)tm -u+m 3lyb4 k6x0uihvx9 iuzero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 metr s+lk;p /2qgrk/t5 (uhzn 5. What is the magnitude of the electric field atnug(5 ltez+p;rkh25/rs k tq/ the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Tj( f2cogb.r a:he last corner is occupied by a -3.0 mC (ogcfa2b: rj.charge. Find the electric field at the center of the square.

  Consider a square which i2h959 lsx-uqkb ujbt4 ccka 6.i.9k.ncoohm *s 1.0 m on a side. Charges are placed at the corners of the square as follows: +4-* a.tccm9 9q.. n lco9b4xkuok2uk65 hsjibh.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 uniform el5zyw x*k w8wgfq4fc;uzm 19f,ectric field. What is the magnitude of this electric field?fy1*5q z;f8x cgfw9,km4uw z w

  A particle with a charge of 4.0 + awoil/j v.4bmC 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 fieli 2 n09 e7if z.as3qkiep8dhs-d of 6000 N/C pointing downward. What charge must be plaqz iid.eisa 0 n-e7 8f9s3hpk2ced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 n4m1f4/t kybiv,mb tn 6C. The ball is placed inside a uniform electric field, and is suspended against the force of graviymt ifm4vbb ,6ktn 14/ty. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chgz+y;lfe9.vq q7w cp:arge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from t+ q7 e;9z.pyglv wfcq:he sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wj51 grx3z yor 1zi,+xkhat is the electric field 6.0 cm from the centezyi+r311g x5kz,xr j or of the sphere?