State the law of conservatioets/)py ,pxi,n of electric charge.

  Is it possible for twip+ cwa49vuf3 o negative charges to attract each other?

  Is it possible for a positive and a negative charge to atm; 3notf lvn4y33jrz2 p/p;lm tract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod 2frx-3w z z+iaacquires a positive cw3zzi a2+-xrfharge and the silk

  A proton carries a

  The model of the atom sho+8,nmzpzt)ys a yl*px* 1m tls9a8vg-ws a

  A neutral atom always haowes kwf8- 9 tkhu:dg2u 3h88gs

  An atom has more electrons than protons. The /db1 awqjxxu6cs0; .fatom is

  Materials in which th8:m-su .gx5f7fsk lb te electrons are bound very tightly to the nuclei are referred xtf:lu 7sf- sb5k 8mg.to as

  Materials in which the electrons r :/vacq; rls(are bound very loosely to the nuclei and can move about freely within the maters c: r;aql(v/rial are referred to as

  A negatively charged rod is brought near one end of an uncharged mtij* lsu)81is. hk0md etal bar. The end of the metal bar farthest from the charged rod will be chl .1dmjh i*8ukst)is 0arged

  Sphere A carries a net posz*g f5;ydz rhrbg/27l itive charge, and sphere B is neutral. They are placed near each other on an gr/f y*2dz5r7 gl;zbhinsulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscopz6tu7a(1 m3bv3 yid wp jh8xa1e positively?

  An originally neutral electroscope is briefly tx( 1etwy 9jh 3bs)t8 uuxoe./0hitd:vb ,x1hsouched with a positively charged glas( x3dtsx)t xuwvo:1ty0h1bh,9hese ibu./j8s rod. The electroscope

  An originally neutral electroscopmv7hgs( y: c6ve is grounded briefly while a positively charged glass rod is held nea:6 sgh(vmv7cyr it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the lo9sfrqzx4 9b *eaves separate. Then a negative object ib9s4qz9r xf *os brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is pl8nl jg3uc; y/bhzw-o2sl 5p8 eaced on an insulated table. A neutral metall 5lbnugj chp;zeyow38 /s- 82lic 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 ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Cowu;:sl;bu 8hh,ty1*ufyy 4xgulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distanci rhof t-q9+8re d. The first charge is larger in magnitude than the second charge-tof8rih +r q9.

  Sphere A carries a net charge and sphere B is neu-teyp4ycs )+:ydgiy ose6,2 ( ioyc*htral. They are placed near each other on an insulated table. Which statement best diohcy(*s -, +ydp) ytg4s o6y2 ceiy:eescribes the electrostatic force between them?

  Two charged objects attract eacuoc1iq u.+za .h other with a certain force. If the charges on both objects are doubled with no change in separation, the fo zc+.1uuq .aiorce between them

  Two charges are separated by a distance d and /g ;uz.xqcwe( exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new c(gwxez;q ./u mutual forces?

  Two charged objects attract each other with a force F. inuzg- lfj yz6k )-:7qWhat 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 ori-j iyqg-z: 7)ul knf6zginal value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. Whac efwh-/ 2)znvg4px9lt happens to the magnitude of the force on the proton if a second)-w94vxnf2 e pghc/zl electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. lfs z+ddw(b: /,ydp:fWhat happens to the magnitude of the force on the first electron if fy sd,b lwd+/p:z(:d fa second electron is placed next to the proton?

  An electron and a proton are sepay xfj( wkf+;:;.-zr uzxcx, ejrated by a distance of 1.0 m. What happens to the size of the force on the proton if the elecxjjk(-zx ;c e .:ruxzfy;+, wftron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square -/av bmfl98xw. 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 chara/x- wfvmb9l 8ges 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 tri,elp 7 c.t4wvtangle. When a second charge of +Q is placed at one of the triangle's ve ,w.t lp7vtc4ertices, 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 is ry(r 4 0ddb*xynot a vector?

  At twice the distance from a point charge, th- bh /ue(/tnbpkw5 d*ie strength of the electric field

  Is it possible to have a zero el 8qthwu+ zy*r.ectric field value between a negative and positive charge alohqywtu+*r z8.ng the line joining the two charges?

  Is it possible to have a zero electric field value between two positive ch6exdu;pg2 b5/o4uyt sarges along the line joining the two charg 4 ped/6bos5u2utx;gyes?

  Electric field lines ne5vvdrrbs6d 9- r0sbr 4fh j56car psitive point charges

  The electric field shownp w- ww,q,4knr

  Can electric field lines intersect in free spaczzsmd*g w52 . hv9wkr+e?

  A solid block of metal in electrostwq(ky pt *6/yh;pqwa ydbs o.e0 (;+zkatic equilibrium is placed in a uniform electric field. Give a statement concerny*;ppsk+/h ky zyw6a;ode (bqt.0 qw (ing the electric field in the block's interior.

  If a solid metal sphere and a df(bfv 9,ng37ajt a/ rgq;8u chollow metal sphere of equal diameters are each given the same charge, the eld ubg(r,n8gf;f qaaj7 3tc/9vectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table-c lb y+yw ye(vga8j7/ in a region where a uniform electric fie bw7+-/l(ygvy eyc8ajld is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium nears0r5dfs7m pb 5 an electric charge

  A positive point charglgj5x 0bk m5-me is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field a0j5 k x5lg-mmbt a point directly above the hollow sphere has

State three propertiesez1 z2twy d 13hxhegk5*7 /y+treqa-f of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron i0p3m ji5qq 8a zy fna5j-5xv9bs $e = -1.6 \times 10^{-19} \; C$. 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 ti.a 2- :;,boubo lz1a y6hzhzdhan electrons dod61 iba2z,bzyh-o.:h;o luzaes this piece of plastic have?

  What is the charge on 1 kg of protovk(*3l e fwa*dns?

  An atomic nucleus hasr yo5/gmw(8i pvqzk.s7 c;nzs.t5wi5 a 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. jh22(;tfwj to0 mC, respectively. What is the magnitude of the electric force between the (t owht2jj2f;m?

  A 1.0-C charge is 15 m from a second i3nc k*m:p:z 7hf mx,acharge, and the force between them is 1.0 N. What is the magnitude of the second c,:mx m3aihpf7:n zk *charge?

  Two 1.0-C charges have a forcu.p 8)s,cialbl0 hje8 e between them of 1.0 N. How far apart are they?

  The force between a c 6whw9kkff ab5,e df3v-a *(f$30 \; mC$ 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 zl s0.gc -;egxou z4vde80s-b 1.0-N force. If they are moved to a new separation of 8.0 cm, wsvb z .00e 4gulesz8gx-c-; odhat is the electric force between them?

  Three identical point charges of 2.0 uu /die c2naf5.bg2y:8yh(xmmC are placed on the x-axis. The first charge is at the origin, the se 2d .uex5ub:gymh 8ifa/2 ncy(cond to the right 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 aa-q;ci:gz3o)i:dq h on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 5: - iahqia)o;q d3:zgc0 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 followdjicv 94d-zj1 ing 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 3.04j 9d1ij -zcdv0-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point cha4why co4nd99l rge of -Q is placed at the upper-left corner. It is observed that an e4 nd l9h4ycw9olectrostatic 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 ;z bbnpy,ni7,at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnzn;i,7 ,bn ybpitude 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 6 0r85e 6dv emthh6l6umgn5a:g. rtxa(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What ihev g r56u.tl8agx h6dtm: enm a6r056s the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateru4,jr 9( 6znbya pinntmiv)k6.x,az3 al triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any onkp),muz(4 n3,vr 6int xn aij.zy96a be of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. e. xr e/7kzc 9x0yf)lbAt what point, on a line between the two charges, would it be possible to place a charge of -Q such th9 xzyx)le70b ckef./ rat the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C chag cm b)s zo8o* +ss,yy4jc9m;prge is at x = 4.0 m. Where on the s *mcc89 b; yg4jozs,)+ soypmx-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charg p971b+.kjx:0aydype km5x xde -q is placed at x = 2a. Where can a third positive charge +q be placed so that thedpj. kp:5 ed1 9mxy+kx 7xay0b force on it is zero?

  A copper penny has a mass of0neg*f k )c41ra4g wvh 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 fo,xbve0a , ;*4nlg fpd*ainiv7rce of gravity by the attraction of a fixed proton some distance above it. How far above the eleciaa7d e4xp v,,nb nvg*;0*l iftron is the proton?

  Two 0.20-g metal spheres are hung from a com/vo l trt pww9v.m24a-mon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them w-owrmvv/29t 4lt .paapart 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 thel arw6ad.: su/ electric field at a distance of 1a6./l uraws:d.0 m from the nucleus?

  What are the magnitude and direction of thez 6q vq-yf 7b8a3 e 4r;mhygda:n/dw(x electric field at a distance of 1.50 m from a 50.0-nC r/(q:d;g-yyax6 qwzf4vm nh738 da be charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude iq, ,wtqr +goif4o y42of the electric field at the location of the test charqri2fy ,i+ w4,4og otqge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of thebvf4tp ox7 8bl*w*r 8b electric 8* l x78b fbopt*vwrb4field?

  A 5.0-C charge is 10 m from a small test charge. What h m 0vr94wut85ccj x+wi*dm4bis the magnitude of the force experienced by a 1.0 nC charge placed at the location of the teuxv mjcrtw *49+b5dc wi8m40hst charge?

  Two point charges each have a value of 3.0 C and are gh*w836j 6db4pyw z reseparated by a distance of gwe*zr3djh 86b 4pwy64.0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mar)r 4+-wr s6qlbsot.f1ml n )gjk of a meter stick and a -4.0 mC charge is pl r lmfj)srn1+g.q s4-w6otb) laced at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0+zxg 27udiz oqgu p6:1 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point o2 :zuxz ggi6p +odq17un a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -t(w e fe5fh5s*7.0 mC are placed at x = 0 and x = 0.20 m. What is the magn es5f(fh*te 5witude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square x1susy 24xy- uof side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of theyyu s24 uxx1s- square.

  Consider a square which is 1.0 m on a sidu iexg,z1t( +0pf8rpxe. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0);8p(u 0g1t +eipfx,x zr +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 actsoa :i sfzco8(; on a charge of 5.0 mC when it is placed in a uniform electric field. Whataszcfio8: ;(o is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has 8,zu7ex; r ql,iebl) u lmjy79 ,hz*rea 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 hl 0qbdi- 0*h uz0ktml fbfa49c5cx+ 2field of 6000 N/C pointing downward. What charge must b-du+f xlctk4 z9a0 5c bflqh2h0m0i*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 03 1jm*jkzjsvm a6/c qplaced inside a uniform electri jv3qcsm0ma/j kj6z1 *c 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 mCl3pb:gq/n gp.w3y.hu . What is the magnitude of the electric field 5.0 cm from the sphere's surface3u b:gh q.gpyn .p3lw/?

  A metal sphere of radius 2.0 cm carriewl, o *aa,jn hmaeo)8 z0nd)/g+ymp z7s a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphere?wl)o/z* pamnoye,n+gamdz), 708jha