State the law of conservation of elec**vs l1f1cdvk deg/ 4gtric charge.

  Is it possible for twmqh 1njjj- 9nkgp/:1 wo negative charges to attract each other?

  Is it possible for a positive and a wsh u;y 7j2ivsujgls, /n a9)5negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During tho 0d 8t z-mmj3dfsp0hb8mes/-e process the glass rod acquires a positive chargezm-3dss8b/md pmh0oe0 -ft 8j and the silk

  A proton carries a

  The model of the atom sb0 oiszgj*,arwoj y(it 73c 93hows a

  A neutral atom alwaytwwi+mct.6-t gl 00z tq+h.ai5cp8obs has

  An atom has more electrons theuey;8 n6ff dhk. ;8ecan protons. The atom is

  Materials in which the ele/gdr ,gmmef 7:ctrons are bound very tightly to the nuclei are referreddm 7m/:,er ggf to as

  Materials in which the electrons are bound very loosel9,8u 7o ,avkgo/mbk 8bgfwff 3y to the nuclei and can move about freely within t3vgfbk k a/gf8b7m,8 fu9owo,he material are referred to as

  A negatively charged rod is brought near one end of an uncharged/w+, r1pn lat8bdxw7 kc6neq9c7x/sg metal bar. The end of the metal bar farthest from the charapnlq xwk1r swe t9c7/nx+/, c dgb678ged rod will be charged

  Sphere A carries a net ov 8:)tbj7 5zm mnciqnte+82wpositive 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 g78wnn8t5:otm e+icvjz b2 q)mrounded. Which statement is correct?

  How can a negativelyz ki ;my ;nh8vqv5/mj8 charged rod charge an electroscope positively?

  An originally neutral electr59gn hwy+,mhrspa/ *noscope is briefly touched with a positively charged glass rod. The electra/hs, 5h9+np *wnmrygoscope

  An originally neutral electroscope aosqnq5 :oxn7+d7+t/ lt6p v bis grounded briefly while a positively charged glass rod is held near it. xv7t7+o5/:np6l nd+ otsbqq a After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separ/fzzaakf y,-y*xu) ,sate. Then a negative object is broug,a x/yfasuz)*kf yz,-ht near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively chag e/iquy0+ kmwk/: m9grged object is 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 patgmk/w yuk+ 9g0i/: qmeh 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 Coh2prjhe*c jj0 pe)k+*d 0 1iululomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a 9sw 78j+o qga:jx2mgbexj +e)distance d. The first charge is larger in magnitude than the second charge.jebe97+jag 8)2qw sjmxo+ x:g

  Sphere A carries a net chargea *5tni/w(0 9hnirlj k and sphere B is neutral. They are placed near each other on an ri*0n lk9 (wnh5tiaj /insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other wsz44 gqi/+hhj ith a certain force. If the charges on both objects are doubled with no change in separatsz q+ihjg4/ 4hion, the force between them

  Two charges are separated by a dist6 g0y 63ih dbtkx1(bjjance 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 ji jx6b (b3hdkt6yg10 new mutual forces?

  Two charged objects a+. be ys u;:x7q8m; ojn.mighhttract each other with a force F. 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 reduced to one-fourth its original value? The :u;+ .j gehnhim;so7bmqxy.8force is now equal to

  An electron and a proton are seek;-s30vc m lfparated by a distance of 1.0 m. What happens to the magnitude of the for f em03l-vsck;ce 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 happens to28bfwi22 jndmqko ). r thwok f8m2) d2bi .2qjrne magnitude of the force 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-m cvj*;q 2l8do ithme /97yqr4t7gvr .0 m. What happens to the size of the force on the proton if the electron is j2ti /lqc87meqrv ;-7tod4vyg9h*m rmoved 0.50 m closer to the proton?

  A point charge of +Q q nb ;;vr klkd)b9m7fr))d 5xvd pai5.is placed at the center 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, ident5xd p9k df b)db v;vmn).)l;7kria r5qical 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 anvrp4 e)ihy l 9qj8rg,8 equilateral 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. )v 8r r9y8qi,4 gpjlehWhat 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 n rf)9 zi:3bymgot a vector?

  At twice the distance 90 tvcpxf 8f*rfrom a point charge, the strength of the electric field

  Is it possible to have a zero electric field value betwekjs 0h7o+rh m+5sj ,muen a negative and positive charge alonmj,j 7so0ur+5hm hs k+g the line joining the two charges?

  Is it possible to have a zero electric field value between two positiv xsh7 n+,ionj, jki 7f3+e5spxe charges along the ljxp7i,fn ,7esohs5i+ n 3xkj+ ine joining the two charges?

  Electric field lines near psitive poinzu :-*zl 8dc9u 0aico2joil2w4qk uz6 t charges

  The electric field shown c9g3 v:pcr *-s dpmjyb;*.b5hu; wzni

  Can electric field lines intersect in free spac97 m0rc.t rhcke?

  A solid block of metal in elec0-zqgjs-) qjctrostatic equilibrium is placed in a uniform electric field. Give a statement concerningq sgj-q0-j)cz the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eachh8qed zy,b vfvy2e)r0,4*znc given the same charge, the el, zzy,bv4 f ervh q28ne0d*)ycectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a x w4/v1vzi a gkj;zw54region where a uniform electric field is directed straight upward. What caa4z 1;w/g5 zvjxi wkv4n be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electzh,st4 p aw+x6ric charge

  A positive point charge is enclosed in a holjpx rz8un 8g 7d/pi)qf:cn9 y:low metallic sphere that is grounded. pnc 8i7)pgfdnzy/ju r:8q:9xAs compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in statkqkv ,ij/2 l-pw3.sytic equilibrium.

State Gauss's law.

  The charge carried by one ele5w)r u-piu9t+1py tg xctron 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 +2.8c48hze lo-9)yg yo)atb egw8 cqn;y; 00 mC. How many more protons than electecoy qcho89 8- ;t z8g)egyn4y );wblarons does this piece of plastic have?

  What is the charge on 1 kg of p )rlplybcm* 9(le+ 0rkrotons?

  An atomic nucleus has a chargey1fb,jivk b prb1o2i 2pe r*81 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 and1w glo))i:a epnt8o radbi/z3:tppf/t,9t e; -4.0 mC, respectively. What is the /3 g 8b:e tt1 rde/a) i;lpo:,opwz9it)n atpfmagnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1 jia0w m 4h0kpddr +**vgo* v4wwg+p3o.0 N. What is the magnitude of the se0d0hooidp*3vj+m apw4 grw+v4*k w* gcond charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far zrk.gibydk,x:lz1 n /6r1 bd: apart are they?

  The force between a ):( yb/(bmukm w 327uvm tmgoy$30 \; mC$ 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 : r atc 4z-w;olazmw(8force. If they are moved to a new separation of 8.0 cm, what is the electric force between tc8-zorz;:(w4a ltwa m hem?

  Three identical point charges of 27wfrgvr.mhnc: d 88h9*r m+boo2)gqm.0 mC are placed on 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 directg bh:)mv.9r gnq w7*cr h+dfm88roo m2ion of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0i+(lzl a a,6me mC is placed at the il ze,(a+ml6 aorigin, -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 cx .(:mh+pxuohyud d s,3o/q4the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC cud,yxh:/ (hdm4o3q. oc +sxp uharge?

  A point charge of +Q is placed at the center kp 2pdl(pam8/ of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on 2l pkm8(apdp/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); Qv:jt z2mo(;jr 3 = 5.0 nC is at (0o 2:zm jrt;(jv, 0). What is the magnitude 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, +t:e+m9zme ka6;q , udbcyys70.10 m); Q3 = 5.0 nC is at (0, 0). What is the dib, 79ce m zsmy ty+6qdu+;:kaerection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertuxxl -(k0vz 9eices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic l9(- vxz0u kexforce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 mm;1n uz9,k3 g *z.fbdtuyfx6o. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic forumn1fk ; .uz6f,*93zxyb td goce acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x =wz9h3one 5g ;hbi3 ;kdr) -ef-fo 0cox 4.0 m. Where on the x-axis can a third charge be placed so the net force on e 0kh-wifcg)5f;b;oo h xde-9o33 znrit is zero?

  Charge +2q is placed at +crcnsyn:7g ou0k 0.h the origin and charge -q is placed at x = 2a. Where can a th +:yk cc0hg sur7on.0nird positive charge +q be placed so that the force on it is zero?

  A copper penny has a t:86z,l atd/jzxdv - xh0zqx*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 ajwnc 6.gkd9.9fs; wc ettraction of a fixed proton some distance above it. How far above the electron is the pr9g snwc;jd9w. fek 6.coton?

  Two 0.20-g metal spheres are hung from a common poiro .a:ma 82fnv tvbo /(pr3)rrnt by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the anglet2or(:nbf)vo.r vp ramr a83/ between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. Wc+pd3kz:f5 g phat is the magnitude of the electric field g d:zc+3p 5kfpat a distance of 1.0 m from the nucleus?

  What are the magnitu+ikrmd h1 x-f5de and direction of the electric field at a distance of 1.50 m from a 50.0r5fmkid 1h +-x-nC charge?

  A 5.0-C charge is 10 m from z ;;qto0 zde,pa small test charge. What is the magnitude of the electric field at the lo ,;opt;zd0qzecation of the test charge?

  A 5.0-C charge is 10 m from k4wfan*cw4n yd u:7+uu9u0 fta small test charge. What is the direction of the electric fiwcut +ua4nn uyd:*97f f4kw0ueld?

  A 5.0-C charge is 10 m from a smx rwb+19p t5 uo:bml0aall test charge. What is the magnitude of the force experiencedm9lbtbu 5w xo+0:1pra 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 and are separated by a distance o6lg9qc,r wqv qc)0i84 d-kjzc f 4.0 m. What is the electric field at a point midway between the two0kci46q d-jg,w lc8z9 cv)qqr charges?

  A 5.0-mC charge is placed at the 0 cm mark 63)l o cvjr6 tzu97 fit(ihl-lof a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What)6tjflizti (3 r ovl-h 7lc9u6 is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 ( q(m24hraw ohr6rr(nmC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the elem aw(hr 4(rqr(or 6hn2ctric field zero?

  Two point charges of +3.0 mC and -7.0d: jk+wq/8 r:51 i vp )b0g ktoso74rmxcbxa6i mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between them? bo/ijdb7k0r r:w8mgiov5ax :qk 6)+sc4pxt 1

  Three 3.0 mC charges are at the three corners axfnq(+q1.ti3 5q hlgof a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. f.x 53q+thq(a gni ql1 Find the electric field at the center of the square.

  Consider a square whijb7 i r3-1ytlcch is 1.0 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 (07ty 1brc3lji-, 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 ibee(2jhws4yr9v( *tv s placed in a uniform electric field. What is the magnitude of this electri*ewr9bthv s(vjye 42(c field?

  A particle with a charge of 1 xqwtk8jo ihop9/d+ g4l8 d7y4.0 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 an electric fie5g;um6tbztu c02 m9-ois9jvs ld of 6000 N/C pointing downward. What charge must be placed on the ball for it 2 mv;buo-m 9czus5 t9sj6igt0to be suspended?

  A foam ball of mass 0.150 g fcs+3t-gr7e g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What ar-7egc g3tsrf +e the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carrin3un3jowzr-.7)okx c (mmq6)mcv zw +es a charge of +2.0 mC. What is the magnitude of the electric fie6 3wo3xqzjmr().zomvcu n +7mnc w)-k ld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is th 8v12 d9zwmfbrj9t1j veb9wa+ pjo.r-e electric field 6.0 cm from the center of thje-9adrtv1wb+wfro 9jjz12m .p b89ve sphere?