State the law of conservat s+cp6v;zz0a sion of electric charge.

  Is it possible for two negative charges to attract each otherg/;9pmzcj: c 7cg,7q0cnsnm m?

  Is it possible for a positive andz/jlkytb5f ml.d83 h 1 a negative charge to attract each other?

  A glass rod is rubbed with a piece of sil-ok n5alo3 ;ugk. During the process the glass rod acquires a positive chalo-og3nku ;5 arge and the silk

  A proton carries a

  The model of the atom shoh (qc (a)lfq96anhiprk 3 4pm,*y1bgbws a

  A neutral atom always ha96 wilf ;mtw2:+xj os:zzqvm 1s

  An atom has more electrons than protons. The ato 6kaxhk :w/iic /8dw7 vm/g.xim is

  Materials in which the electrons are bound very tightly to the nucleib4 hv,baw( w4u are referred to as ba4wbwh4( vu,

  Materials in which the electrons are bound very loosely to the nuclei and r eatzvdbzww)w+4j 71wy::ei a+ 4dz jz0 .2ahcan move about freelywd 0re:+d :1 )j.aiewz+vab 4tyz4a2wjzwzh7 within the material are referred to as

  A negatively charged rod is brought nh q g6(qamql)mbri: b.,n lm07ear one end of an uncharged metal bar. The end of the metal bar farr:m6 ln q7iqa m)bbg0(l.qh,mthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral.ixagq. j r l51waz40xky:nrdq+h ;2+ f They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Wazx g 2fya5+qn1hkqj+rr;x 4w li:0.dhich statement is correct?

  How can a negatively charged rod charge an electroscope ppdsqy z.78 gqt :q,eign)9vvr 07r3v yositively?

  An originally neutral electroscope is brie2m5u j ispi oz91m, +a)kpi;cdk6o4q gfly touched with a positively charged glass rod. The elkcz2)6ap ;qkom,4pgu+i midsj 1 oi9 5ectroscope

  An originally neutral electroscope is grounded briefly while a pos*wcm k/9ae:z:7r jpe pitively charged glass rod is held neaw/pz c9a*rk e:7:emjpr it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separao4-5 e 6kd (4rxdzzvuwte. Then a negative object is brought near the electroscope, but does not touch it. What happ4rzw6-xuk dzo e5v(d4 ens to the leaves?

  A large negatively chark 1e 6znp.8esyged object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutralp s 8keyn6.e1z 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 Coulomb const8(pb 0ujp2cl hant $k$, which appears in Coulomb's law?

  Two charged objects are separatedw-jg k: d41bje by a distance d. The first charge is larger in magnitude than the second chargk1d-bj gej 4w:e.

  Sphere A carries a net charge u g:cuhf(qzam9u,y-a--jb 6hand sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic forceuu-uhcj qaz( ymfb ,6:- ha-9g between them?

  Two charged objects attract each other with a certainwbyg n2l0 cn;) force. If the charges on both objects are doubled with no change in separation, the fo)g;nbycl n w20rce between them

  Two charges are separated by a dista1 modb8w vn:-qm 6vbj9nce d and exert mutual attractive forces of F on each other. If the charges arev:b6dv18- n q9mmo jbw separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F.9 ikipce*j7x 1 What happens to the force between them if one charge is 1* jpie9kxic7 doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proepyao38ni qr-j,b 37iton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is pq- 8yibjnpe ,oir733alaced next to the first electron?

  An electron and a pr-;rr u1r ri3hsoton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the prot r -s31i;hrurron?

  An electron and a proton are separated xf2,o.(p ock em-howqz( 7/ plby a distance of 1.0 m. What happens to the size of the force on th2(.elo p/7cohxw(o,q -m fzpke proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center oyo x9k,zcj r 0,r0sjd)f 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 chz ) ,0y jkjc9sor,0rxdarges 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 atc9m/ruu4 6ywjqh v 7.ilmx.- f the centroid of an 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. What is the magnitude of the force that acts on the center charge due to a third y4-i .v.mhu f c/6ru7lqjx mw9charge of +Q placed at one of the other vertices?

  Which of the following is( cpipv;mx24k not a vector?

  At twice the distance fsg ,rconcbh(lcvpj,a;i7+*g 6n89g irom a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and/0yiwm +9 ix 8q nlqc9 *azxldn2nu2f( positive charge along the line joining the two charges?n i9cxx/l+(2dnq20yn ufam q w z9*l8i

  Is it possible to have a zero ehh:e29f., alia zgyd :lectric field value between two positive charges along the line joining the two chargeaazyg:hfe,:2 .9i lh ds?

  Electric field lines near py :nr m;dve5z,g/yxu2n fbt:2sitive point charges

  The electric field sho52c pemn4dxl*w f;qx4 wn

  Can electric field lines intersect in free space?qkd,0 vcgq (x7ks2an9n:7ebn

  A solid block of metal in electrostatic equilibrium is placed in a un jc8n gwow0aa9x;l3ofb)a59 hiform electric field. Give a statement concerning xf89ah b;c0go3joaw )5lwa 9n the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are et (g+ce; plk:gach given the same charge, the electric field (E) midw gt:( gp+;lckeay between the center and the surface is

  A cubic block of aluminum rests on a wohrb z4da u)b66oden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the u 6d)r6b4ahzbblock's top surface?

  If a conductor is in electrostatic equilibrium near an e0 0rkktocf(:i r*7naelectric charge

  A positive point charge is enclosed in a holl(gl8k vea)1i how metallic sphere that is grounded. As compared tol8 e)(ah1vgk i the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriq xwvffo y9egun,rov . b5d6-(cjd;5)um.

State Gauss's law.

  The charge carried by one elecry2 -mb0*glxqdi9nv0 h)n w;xar .x*etron 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,x9yaffg to;)wq 0f/ vk; m,yj than electrons does this piece ofof /fa0vt,q; gmf; kwyy)9j x, plastic have?

  What is the charge on 1pj3c9 qt5k(6y mxy-s 1u whb:r kg of protons?

  An atomic nucleus has a charb0o3jon 0tul 0 5jyuv8ge 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 qqs ix 1dhxfb59b.x ;4cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of 1iq4dfbs5. 9x;bqxh xthe electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between t.3jgukp/hlbn6 k3 nt- 1gmn3r hem is 1.0 N. What is the magnitude of the/lk3j- 3 m3hn.ngu6b1rtpnk g second charge?

  Two 1.0-C charges have a forcelkl29 mxzv1 /l;/a(k)d jly cv between them of 1.0 N. How far apart are they?

  The force between a re4uou*;l 0 ob$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienc 9ruq*mguet*ukurx303f t q67e a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force *q g3urer7mkuuqxt *f 039tu6between them?

  Three identical point chvwpl6u3z u0b g 3)es 5 t,z o3/ukrsupwu.gx5-arges of 2.0 mC are placed on the x-axis. The first charge is at the osupp-uw/ ro5., wu lk xzbgg 3 e03)tvu35usz6rigin, 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 electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placedoo))wfv 9m+:nvk qq.g 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 magnitude and direction of the electrostatic force which acts on the charge at the )q vow.v+n k)9f:qmgoorigin?

  Three point charges are located at the followin az0d,tgb 8 c2box8n4qg 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 on0gonb 8c2zxq8,4btad the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square wq31bpbh+3shts ejxci 9 3.-n, 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 the positive charge at the center. What is the magnitude of the force that a pnjt hb-1ieh s9 3.sqwcx3b3+cts 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); Q+ za:7lzrt9bzn/k: dm2 = -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 on9 a:/krbld+znz7:tmz the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 mhb9bc lm/g4 .3uuxdtx 9p 66cz, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC chc6dml 49tp /ubgx9bcz u6 hx3.arge?

  Three identical charges of f jvwl0c9 ekr-(z3/zo3.0 mC are placed at the vertices of an equilateral triangle which measures 30wvzr fo-/clze 3(k 9j0 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 m. At what po8 4-/mtf.kw cxsc kyff(tw. ,fh88jq6xpxn9vint, on a line between the twfhm9tk88x4jx( xf tcyws. c n .q/pffk8v,w6- o charges, would it be possible to place 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 charge is at x = 4.0 m. p 8qg1+(lveer Where on the x-axis can a third charge be pla(egqr1+ ev8p lced so the net force on it is zero?

  Charge +2q is placed at the origi2 xjnd1eig(/4hj g zo g81mra:wej0w6t2q i:pn and charge -q is placed at x = 2a. Where can a thi 8oi0 1g6j:g:xwq2rdm/a1njtj(4zpiwg 2e h e rd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass ofbj4d3j:9i6 wbt cqa8o 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 attrw)ds mwr 4/.rxaction of a fixed proton so.s rw)x4 /rwmdme distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are h e bqo+fi--5vkung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, abe5-iv+ -fkoqnd the 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. What is the magnitude of the e keubt h9ua0)e/suwo4wkk1 1+lectric field at a distance of 1.0k1 +usw u9a01oe/ uk4tbewh k) m from the nucleus?

  What are the magnitude and direction of the elezdmw 1 x:o36pbctric field at a distance of 1.50 m from a 50.0-nC charge?bdx :3zo1wp6 m

  A 5.0-C charge is 10 m from a scifl 8a0); r/ mgi;kxlmall test charge. What is the magnitude of the electria ;lm ci0)8lkix/ fgr;c field at the location of the test charge?

  A 5.0-C charge is 10 m;pckp; f*vt d+ from a small test charge. What is the direction of the e d;fpp+v; k*tclectric field?

  A 5.0-C charge is 10 m from a smalz i6 oo 5/1ehos1o.nexwl4m2ll test charge. What is the magnitude of the force experienced by a 1.0 nozo 6h4olw sxn /5ie1eo1l2.mC 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 oquj ag6t;/h0nf 4.0 m. What is the electric field at a poin/ ;htnu6 j0gaqt midway between the two charges?

  A 5.0-mC charge is placed at th ;anam q4 bd x5-ucaz+*dhxy*5e 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 5 55hqxxynz-*a4dmd u baa ;+c*0 cm mark. What 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 r xqtss;2:10u 5dylpw g c5:wnand a -4.0 mC charge is placed at the 50 cm 5 g wxsc t5;:dlnyqp0:su 12wrmark. 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.qqz3o;m d)4n5hh+o: nfab5olt 6x*ud 20 m. What is the magnitude of the electric field at the point midway beta mofohqzox t ;u5:+3d4b6*l) 5hndqn ween them?

  Three 3.0 mC charges are at the three corners ofkn((lwrz:-to77pin x a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find th z xl:(po7r w7n-tink(e electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corne9,q:dh 9zna dne* io/trs 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 electric field atq ne9a /io:d*zh9tnd, the square's center?

  A force of 10 N acts on a charge of 5.0s5z767tzf 7i a:+ xlp9jop cim mC when it is placed in a uniform electric field. What is the magnitude of this electric field lsfpi za9+cp75jz:6oi77m xt?

  A particle with a charge of 4,tqk9,ezn 6l c.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 place(8-xhg +yq8hr9zdr0flj / a5; vj exiwd in an electric field of 6000 N/C pointing downward. What chix -;x5fdjz898g rv(h +wrjeqh0y/l aarge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 gjm z.r-le* :cy carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force j: lyz*mr.ce- of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a ce 7 s/u.ih35q kdvfr ew:zn5f;harge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere'ssfd3w.r nhf:ki u ;755 e/eqvz surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.8ed:7kn4 oo7pao,h dp0 mC. What is the electric field 6.0 cm from the center of thopp77 ,4e 8dhooak:nd e sphere?