State the law of conservation of electric charge2hlo;1a -yep uf7 a.)ooj5jnz.

  Is it possible for two negative chawcvlbaxe1( q9r; *i5q 1b6lktrges to attract each other?

  Is it possible for a positive and a negative charge t52yza.0 nvmcw o attract each other?

  A glass rod is rubbed with a piece oldgk4v1zblp- +. sb s u--ax)xf silk. During the process the glass rod acquires a positive charge and the du 4)lvbgbx s.- -alz1-psk+xsilk

  A proton carries a

  The model of the atom sh+ q.jjq2vxu(gows a

  A neutral atom always hasze (0*xxn fwjx92.eo 5lwc *qt

  An atom has more electrons tm0leco26yk5h)isjgd, p.rv-han protons. The atom is

  Materials in which the electrons /2i g78 zs*akbywxl*t f*;ypuare bound very tightly to the nuclei are referred to a*ykxzy p 8/u2ltb;sawi*g* f7s

  Materials in which the electrons armj7.n2 eih,aed2 c;g6dpc.c ee bound very loosely to the nuclei and can move about freely within the material are referred to a .mpj6e,c cg;.72iadecndh2 e s

  A negatively charged rod is brougdmfg/ybs8 10kht near one end of an uncharged metal bar. The end of the metal bar farthest from the cf8 mydb01 ksg/harged rod will be charged

  Sphere A carries a net positive charge, swipum 430mxzat 6b vj1v4egpv. 2(9 nand sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is g93x1 svv2wvui mz(4jt0amne6bp 4.pg rounded. Which statement is correct?

  How can a negatively charged rod chargqjb 6zgf:wg6l i(h 5c-e an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charmb0iezp w xqinj xvo*u9:,++.ged glass rod. The electros* xj0i nxe+.:pvq+zm 9 buw,iocope

  An originally neutral electroscope is grounded briefly whil3rss* 5 f/t9x .kbnwrve a positively charged glass rox5vwrfrn b.sk3/ st9*d is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscop :+: qk8u,*jdpbbdz tge, and the leaves separate. Then a negative object is brought near the electroscope, u:bg+*b d: j dtp8z,kqbut does not touch it. What happens to the leaves?

  A large negatively charged object i8admo:c5cyv*t dez9s, 2(prls placed on an 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 papvc5(a z cdm2od r ,9:y*tsl8eth 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 Cou b/r vrahm6 bdm;e,ywm59+d:clomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated cctm7o , /xr.am+nc1 o yg.z(jby a distance d. The first charge is larger in magnitude t.,a+ccmc1gz.jy( x /oo m7n trhan the second charge.

  Sphere A carries a net charge and sphere B is neutral. Th k)).udk8ozpum s c vov6;1e9bey are placed near each other on an insulated table. Whicep9cvs dkb)vu )um8o6;. zo1kh statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the p8 1nqt7v ya03jl;uhs charges on both objects are doubled with no change in separation,8vsj07pluh q1t3 a ;yn the force between them

  Two charges are separatza-k -9x -xczh,vh jdw yi+9t(ed by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutuahv9k9(-ah+x w-j,z- zicxdt yl forces?

  Two charged objects attract each other with a force F. What happens towi31cit48 eyq the force between them if one charge is doubled, the other charge is tripled, and the separation distat3e wc4q i1y8ince between their 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 1.0 m. Wh4va9 pqi::0 bu tq8izlsyv6 x+at happens to the magnitude of the force on the p +xi80b z p:49:iuvls avqt6qyroton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a digozcv g;8e d(/69u l.s e;x8gfmevp3o stance of 1.0 m. What happens to the magnitude of the force on the first electron if a second e e vo9c;gx dzguvo6 /pfl3;8(sge.8 melectron is placed next to the proton?

  An electron and a proton are separated by a distancw, l7z8l 6b2rjo4hytge of 1.0 m. What happens to the size of the force on the polth76,jgzy 8b4 w 2rlroton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the zor s see;; c-o,6i2yyln 1-cecenter of a square. 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 charges of -Q are placed at the other thr-rsy cy oees6-e21;oc,zi;n lee 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 equilatex06clqzz-/ g nmo7mjg4 1z w6pral triangle. 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 f1cgzmj xn07 / pg 6wzmlq-o6z4orce 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 4 0m,tbd 1u vcd-iwrl7a vector?

  At twice the distance 7q 8(lq uk1ljkfrom a point charge, the strength of the electric field

  Is it possible to have a zero electric field va9zgs8)5kqdrb lue between a negative and positive ch)sbz9 kr5qgd 8arge along the line joining the two charges?

  Is it possible to have a zero electric 4ukn)qbt j6s5 byw/ru-d6st1field value between two positive charges along the - bbt6kd6s1sn yrj5wqut u) 4/line joining the two charges?

  Electric field lines nearh7ckbyk) mitl3br/ w 6n* b81c psitive point charges

  The electric field showng:u qw.1 ,s ;k-z:ix(vh ,l4asxgvopu

  Can electric field lines intersect in s2d0vrq*zz- fb 5t+u 1;uhpgxfree space?

  A solid block of metal in electrostatic equilibrium is placed)je- xmkmo:x-ys)f84k4on1;j s n rgz in a uniform electric field. Give a statement concerning-en o-szkjf:on4 )4 jgrm)m81xxysk; the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal di/j0 z7d/x gfgf5r9 bmxameters are each given the same charge, the electric field (E) midway xz0jr/ m57dbfg9 gfx/between the center and the surface is

  A cubic block of aluminum rests on a wooden tabl2o*n9lp qox9 dkuqj;2e in a region where a uniform electric field is directed straight upward. What can be said concerning2u29 ; o*n qopqxkldj9 the charge on the block's top surface?

  If a conductor is in electrostat/03k d1k mq bs;/unrkqic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow meta7g :av0m apmslzy8 f2j p7.9z47vmk5nan h -lzllic sphere that is grounded. As compared to the case without the hollow sphere, the electric field a.-:m azz5va lfgs km2nm 8plz7 j977va0h 4npyt a point directly above the hollow sphere has

State three properties f 0qq :on kd3ly)/l9ubof conductors in static equilibrium.

State Gauss's law.

  The charge carried by one -)qglwt 1:wj82skqvbelectron 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 m (-x1n vunym*+2.00 mC. How many more protons than electrons does this piece of pl( nx*1mvmuy- nastic have?

  What is the charge on 1 kg of q;q t8s/yv10fzj wt5 rprotons?

  An atomic nucleus has a charge oo jthltkb. h hu+8:k*nis q197i6, xhwf $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separab (dd)):k hzvu3i e+vvted by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. Wv k+uv )hdv) zei3db(:hat 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 th9syn yr0qn gyw9uoq 1i4l52-lem is 1.0 N. What is the magnitude of the s5n- 2rqln0soyiw ql4y991u g yecond charge?

  Two 1.0-C charges ha h,wjw 9edrth0tpq6()lw *, dvve a force between them of 1.0 N. How far apart are they?

  The force between a u.676 4gwfv b bmagr1y$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experien6qq(t 6gv g+muce a 1.0-N force. If they are moved to a new separation of 8.0 (utvg6 g qq+m6cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axuki6z2 ,3fnkgis. The first charge is at the origin, the second to the right,6fgzi3k2 n uk 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 are8 6 puboscg0.x placed on the x-axis. A charge of +2.0 mC is placed at .c08 bogs6xupthe 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 at the origin?

  Three point charges are located at the following positions: Q1py xdzbr 2;t:dd-s ww/a3wn 5; = 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 magnitudewr- ywt :d;d/b ;23ws5dnxp az 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 cha /h-k;e,bc.09ddytrvxe x1k*tumzy 9 rge 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 of the force that acts on the center charge if a third charge of -Q is plaxvy;ehmtk d -c9.09xru*t ykz /bde,1ced at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC k2 g5 hwr4yyg(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 2wyhkygg r4(5nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 =4t lm9ghx6 j(x1sath8 5.0 nC is at (0, 0). What is the dshtg48 jahxx 9m1t 6l(irection of the net force on the 5.0 nC charge?

  Three identical charges op 8;vzg * ofoz43cj;meky- m3cf 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the eleczy;g8ek of*v m33-mz p;4 jocctrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which aru,1z,9jam)knfe t h-(.v nq/a:rd -vjutr6 soe separated by 3.0 m. At what point, on a line between the two charges, would it be possible to pls.:t --(q6jofrn /uetr a ,da,znv1m9k vu) jhace a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charbt 6hqdfb14 ff7kt7:rge is at x = 4.0 m. Where on the x-krbft7q 7:bf htd6f1 4axis 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. ohs,:))riugo)o3x; jl 3acr m Where can a third positive charge +q be uhjr): ocr3 ,ma;s ))3igoloxplaced so that the force on it is zero?

  A copper penny has a mass of prh7)hng6ktd6 w w-zx;1d5j t3.0 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 gr8bd)i )qjyqge 6qgd d1t his+, ze-s6.avity by the attraction of a fixed proton some distance stzq.)jq6ddd+hi ei g8 g )6y1- qb,esabove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threadsv;b rz/ iuhw,: which are 30 cm long. Both are given identical charges, and the:uhzbw, /v;r i 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. Wha6on.6jzhgmpq0faw 9:q 93eep 6gl2 ct t is the magnitude of the electric field at a distance ofpgc2f0tj9qz 6. l:6a qw93pe eomg6hn 1.0 m from the nucleus?

  What are the magnitude and dd63af3og h8 4wcvrf 0uirection of the electric field at a distance of 1.50 m from8u3hdv4a0rf6 o cfg3w a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charg6qgizpzleb0 0 8+jv6c.0dm uamkss+y (kvy7) e. What is the magnitude of the electric fiel8lme .(0uy qjkp606 cvyzikm ds7+)v az+bgs0d at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dirwtvnj6iw0jh ;)9 *c neection of the electric field? 6)w0v*jtjn;ch win e9

  A 5.0-C charge is 10 m from a small test charge. What is the magnituj + etq:3dkmwx4 ia95ade of the force experienced by a 1.0 nC charge placed at t3a5aw49 j:+dkmxiqe the location of the test charge?

  Two point charges each have a value of 3.0 C ar *ixu8 n s19sq/ruq tftu7fr,g75ck;nd are separated by a distance of 4.0 m. What is the electric field at a point mid r77x;si gs, 5c*r1 tqk9f8qf /uunturway 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 cha2wv.8o9a ,mhme(h vsarge is placed at the 50 cm mark.(o9. 82v hvm wem,hasa What is the electric field at the 30 cm mark?

  A 5.0-mC charge is phmmwj 7: gtq88ue3y7ecj8 +fblaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mh8m 87+3j wfeet8ycu mqg:b 7jark. 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 are placed at x = 0 and x = 0.20 m. Whztstm(8;r7fne600wx m+ fcj t at is th x+(7ws efm0cmtj;f6tzt80n re magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a pi6vr;nuu*m2yw9 d+f square of side 0.50 m. The last corner is * myuw9nvdfrp2+i;u6 occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 +sqjwnbfp ut-4+ slg35 t w1;xm 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 qbpsfjg-swux1t53t +w4 nl+; 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 chav75j e-(-t4sh 3bxwvbd m;w+(skyu purge of 5.0 mC when it is placed in a uniform electric field. Wubb3 5(vwt ds+-eum hs v 47wxy;jk-(phat is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a ob .yp*qdw d1 zvohf .z .3x1wva6p,8jmass 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 6j i+8o6.n lwbq5uuxf0gay +1pd s 1ikan electric field of 6000 N/C pointing downward. What charge 0wb . j1oklpu8xn6uid1sqy6ig+ a+5fmust be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g ca4f;m ber usa7*rries 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 direction of thesab;7 *fmu4 re electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Whaax ,bv/ioo1q/s8 ssbqv9x5s (t is the magnitude of the electric field x/8b1xsqs 9 q/sa oiob5v,s (v5.0 cm from the sphere's surface?

  A metal sphere of radfbz (cdw)74giius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from thezf 7 bdiwg4c() center of the sphere?