State the law of conservaol.sn t;m 7(rltion of electric charge.

  Is it possible for two nega2mr20tcn 5 6 dxgzno2qtive charges to attract each other?

  Is it possible for a 0 b bi/pku8a(epositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod ac:yj) z, i1e p0dw dnl*ejh(je8quires a positive charge and the silk edl(y:j0 ji1,nez)e8h w*dpj

  A proton carries a

  The model of the atom- qtzzzd, 1mxt;;nie3 shows a

  A neutral atom always hauzx :q6l jia.(s

  An atom has more electrons than protons. T(c,9;t8 f a3kycorcsavd x38xhe atom is

  Materials in which the electrons are bound very tv,h lp.zr3f-vo/ftg(zpq 8 x7 ightly to the nuclei are referr qr-fgz(7v, ptx38/ z.h lpfoved to as

  Materials in which the electrons are bound very loos5ss9kj (6z m :epue+zqely to the nuclei and can move about freely within thksz+(sz 95uq: mjee6pe material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. luna1l2v 7rx4 mc1 eq3nqh5)/93ndzc 4avq opThe end of the metal bar farv 4edh714l3 vzn nqx2qnoalc p m/a1c3u r)5q9thest from the charged rod will be charged

  Sphere A carries a netfulnx8ft k yi4()i4-t positive charge, and sphere B is neutral. They are placed near each other on an inslnft)4i-ift84 ( k uxyulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chargej m8-0 for4kjyd rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively s./w:cb ht;f.l p7 lifcharged glass rod. The electrofts/;b i7 pfc:lw. h.lscope

  An originally neutral electroscope is grounded briefly while wx v86 l 8z/p 4bv1o :) f,tdkrrzr:qo.9pdpjna positively charge) p.d8: rzz4/p:d v6 jwproltko98xb,rv1nqfd glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutr-:jhm1- idmqn2rp 3ldal electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch3l hjdmnipd1- r2m:- q it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutr(j(/pwo3abey t l(f.lal 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 ball touch the negative object. What is the final charge on eaoep3(ayjl b .ft((lw/ ch ball?

  Charge is

  What are the units ork+;wvxp(tw- f the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects v )g/ 4b,xijkpare separated by a distance d. The first charge is larger in magnitude th4,ixbvkj )/pg an the second charge.

  Sphere A carries a net charge and sphere B is neutrp.bnac p 6/b.s6pk m2hal. They are placed near each other on an insulated table. Which statement best describkpn62c/sbbmhpp 6.. aes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If to8t9v6ukfovsd6- ksfx o9 v-7he charges on both objects are doubled with no change in separation, the forcov v9 k87-ffvdsxo o-6u6ks9te between them

  Two charges are separated by a distance d and exert mutual attracti sej gd7u4 bfpwj7k anfo:,*h--uno*;ve forces of F on each other. If tepga-n w: nokujj 47b* 7od* husff,-;he 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 hh. klu;.1wlmyh 3;/hyx v;fy/gb5 vca appens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between th5/k;bwalymf/3.h uylhcy. hvg; ; vx1eir centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.e/bz8vcpjsc1ho2 , -x0 m. What happens to the magnitude of the force on the proton if a second electz cxj/ -2ce1hp8ovbs,ron is placed next to the first electron?

  An electron and a proton ael-6*hoi z4bd re separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if hlo deb4*zi- 6a second electron is placed next to the proton?

  An electron and a proton3*ep,c smfw7)f2+h f, uyxcqu are separated by 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 protouf u xe7c q,2 s3y+fm)hpcwf,*n?

  A point charge of +Q is placed at the center of a square q :7ygqieozi 0o4:rti54rx2l . When a second point charge of -Q is placed at one of the square's corners, i2l q:7 tro:4ixyiq4r5g i z0oet 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 vcd92y63 /i b4iqwsbdgi79jhat the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the tr2d7hybsci9i b3 gq vid4/w6 j9iangle'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 is not a vepmytj9fxm363ml k *.zctor?

  At twice the distance from a point charge, the strength of the electric fieldmxhr.vfq *.xyh.f0 * o

  Is it possible to have a zero electri/ 42-t nsjuo 9yoxnv7zc field value between a negative and positive charge along the line joining the two charg/on 24sn7j voyx 9u-ztes?

  Is it possible to have a zefu2 *dgef .s 4q3(scnjro electric field value between two positive charges along th c3e2(dsq ujf4s*g.n fe line joining the two charges?

  Electric field lines near psitsql40ggf b,u- ive point charges

  The electric field show/ qdx73i7z*wv dw-ftq 9 -asvun

  Can electric field lines intersect in free spadp:n0 2xir w*fce?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elec) xxqgooc 324ctric field. Give a statement concerning theo xg4c) o2qxc3 electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere c 3u cv+muou9*of equal diameters are each given the same charge, the electr+u *9cm uo3ucvic field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a reginjrf32 hegoh4 i*c 7(pon where a uniform electric field is directed straight upward. What can be said concerningjco7 2hnh ri43fg(*e p the charge on the block's top surface?

  If a conductor is in electrostatic equilibrd.8dqvpvelh0)a u+n id1k 5l 3ium near an electric charge

  A positive point charge is enclosed in a hollow metallic spheretb3u(a zc9a 6t that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the holtut ca9bz(a 63low sphere has

State three properties of conductors in static equilib3 :f0aaetmgp* rium.

State Gauss's law.

  The charge carried by one electrs1l g3(s4k etton 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 ).i4 g*funurbrc-o,:,, xuofr+e. r;cev tw ythan electrons does this piece of plasti-v, +r;x*y.wr),f c e, uugrouir.bt4 eocfn:c have?

  What is the charge on 1 kg o(f1z3j yden)*ayw.* raacb -pct8f *ef protons?

  An atomic nucleus has a,ydcd7y,t sy-qbe+ b+ 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, xlacve6yw) .6have charge values of 2.0 and -4.0 mC, reyw )exl 6c.6vaspectively. 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 7 j/jb zrgrl2n*5w+rjmh1 r*kthem is 1.0 N. What is the magnitude of the second n*zbm15g+r wj r / 7rr*hj2kjlcharge?

  Two 1.0-C charges have a force fdd)yzk2w kr4;19n kzbetween them of 1.0 N. How far apart are they?

  The force between a ps 0tx9*(5ysu,ghgqf$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cfnpuh 1 ean(ay, f:df/ d1(k(em apart, experience a 1.0-N force. If they are mokn/deh1 uffd1(fan, p :((aye ved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed oyk5e c.f b( +1:kbf b.icwnoy0n the x-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 magnitude and direction of the electroeb+wi y kcfbf c ok(b:0.y51.nstatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A ra: eqq(k8v8hmhid*ofj)37m charge 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 magnitudedeam)qq3m7*hj 8hvr8f i :(ok and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located ad) l xaqq+; kb4ymb rs:5 a;2k3ovma/lt the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC b /m)o ;svqdka 2rax:mkly+ 4;q35labat x = -1.00 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, r6f 1ipm)-lxwmc3ggr y .h7epa5d a*4 and a second point charge of -Q is placed at the upper-left corner. It is observed that anc wp41rih3e7*x6r)ya5 .gl-dpm af gm 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 (0msg+,15 8u,m ujq :3cf uimzjpkd5i3d .30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chac m5,,d:ijm 3+dup fzm1kgjq s83ui5u rge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); 3utg l1x:*ryslrzyq4 a6;podt0ue: 0Q3 = 5.0 nC is at (0, 0). What is the direction of the net force opttz*dr: 3or s0la uuy4e :1y;q0 x6lgn the 5.0 nC charge?

  Three identical charges of 3.0 mC are plbk ce5;* rxcfg +.luz7s8;svn aced at the vertices of an equilateral triangle which measures 30*grx csk n .cv;7;su5zfl8 eb+ cm on a side. 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 separated by 3.0 6v *r ec/4vrism. 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 wouei scv/v r*r46ld be zero?

  A +3.0-C charge is at the origi:bu01h8v8gkzw3y4 x a8yzc mkn and a +9.0-C charge is at x = 4.0 m. Where on the x-axiy8310h k8caxw4yzmz kbvug : 8s can a third 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 cab hrm61 k:pwgw)e+2 lan a third positive charge +q be placed so that the fr wl6:p )gkah+bmew12orce on it is zero?

  A copper penny has a mass of 3.0 g. A ; plztm)u68 sj89jp6gf e8xeh 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 attraction of 89x b -j))cu vi g1ubys og8ykhdw1fwy1l+5b1a fixed proton some8 xs)wku gyb b+hg j11by9c85fiy1o1d -ul) wv distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a comhk1d 2m9ew/p9j4exk )jg * atwg; /t* wmjkx2ymon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads is2// g4xw*9 wa)kg kdt mj;jwpy1x9*mhtkj 2ee $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of the elv d2k4u :vvs 6tpfyf-2ectric field at a distancevu sfyt6 2vf pk:4dv2- of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fielv 0f yx.0hwp3 ta3gwa4 w6q5ayd at a distance of 1.50 m from x0pawh 43g va0yy.tq53af6 wwa 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is thely9d+* k*l7y nszwdl( magnitude of the ells(*y*zk wd7y 9+lnl dectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test chargzm8oy1dyt*p(n x 5rm;e. What is the direction of the elecdp8;1x nt5y r o(ymmz*tric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thegmq)(gpqs /ipty8ne4 +l65gb force experienced by a 1.0 nC char)8tg/ bq+5q( nmgseglpy46ipge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by e ka87a gk 4 0lysb-r)s+x-kbb(panc2va0e p7 a distance of 4.0 k +(8ab)lb 2rs 0ap7 kagn- exbc0ak4svy7e-pm. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC c b tv77nhe5px)jbzm.5harge is placed at the 50 cm mark. What is the electric field at the 30 cm marthv.x) 7m5bpbnj7 e5 zk?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC cad . 6m3:v-duskg3iav harge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field:k-6d3ag .i uvs 3avmd zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and z:xhjkrdhm*( 3teq e,p ,/rw8 x = 0.20 m. What is the magnitude of the electric field at the point midway txrkw e,/j*z:,rp(qd he h3m8between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Tp+ o+xss.uw/n he last corner is occupied by a -3.0 mC charge. Find the electric field at the center ss+ pno w+./uxof the square.

  Consider a square which is 1.0 m on a side. Charges are5j7vk 1yilc2 jk9e2bd 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). What is the magnitude of the electricjk k72c9ye5ibv 1dj2l 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 elek g;t d7vqxcy)j: l-./0s kqpdctric field. What is the magnd)g:/c 70v.l qt s-;kpjd xkqyitude of this electric field?

  A particle with a chartm 3 8g h3)sw5esqg6zfge of 4.0 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/jj * 8iqg5m ito6*nqq an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspe5t86 *iq/mnjiqqjo* g nded?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed;0ld jnz-a rmr5 5na+b inside a uniform electric field, and is suspended against the force of gravity. Wh 0lza-m;arnjr d+n5 b5at are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge,(jsmf ;+v ov;e s-vdr of +2.0 mC. What is the magnituvs - fev;rd,o +(sv;jmde of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What djzxa/,hpk3 j)z .eg 3is the electric field 6.0 cm .j,g/axe 3dz 3khz pj)from the center of the sphere?