State the law of conservation x /:dg nxq45m+*b. z :2jxvykw(aysyrof electric charge.

  Is it possible for two negative charges to attract eac 7i+r,kn:7(e3m upttrkqld01y m gpa(h other?

  Is it possible for a positive and a negative charge to attract each ot6dyty- vk9tp9 ; 0xczbher?

  A glass rod is rubbed with a piece of silk. D4+m 9vbk:l4abs o1ykyuring the process the glass rod acquires a positive charge a k+94mklyov: by 4b1sand the silk

  A proton carries a

  The model of the atom show 7paao6: o 2.:s.dzrvrl;ityg s a

  A neutral atom always haso28 o gve bm.o:+w/ j.wf0kqco

  An atom has more electrons than protonsa22wfmpv ; q*jhc5+j 99iccbo. The atom is

  Materials in which the electrons are bound very tightly to th k f;8n- (/ 8ix54-xza r:;zgyzjnyr4evxufhee nuclei are referred t;axfy4iyzhg/ rk 4x:enz 8f - eu;8-rvxzj (n5o as

  Materials in which the electrons are bound very 0/pafke 6g 0-ikxbhw4loosely to the nuclei and can move about freely within the material are referred to a/ bip00k -k4hf6g axwes

  A negatively charged rod is brought near one end of an unchaqxn7aq*tyetl.mlrgk 5z19) rwx:y1 :rged metal bar. The end of tx5)xa 1wgrn:tl1m ylzr9 qyt.:*e 7kqhe metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plpp xf*l.3 qx;zm utl(u7+s5t kaced near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Wtuk; lmzsf5 .*x( x utp7l3+pqhich statement is correct?

  How can a negatively charged rod cxr- 4ugioy6d p .;3rvk:n nw8hharge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positiu, 9 (nkc,zutfvely charged gla z,k ct(uun,f9ss rod. The electroscope

  An originally neutral electroscope is grounded briejb7d 5p/v vphkwo1656b h+-a mam+uuqfly while a positively charged glass rod is held near it. After the glass rod is / hmh- vm6p +1qjba 5ouk6u7avp+bd5wremoved, the electroscope

  A positive object touches a neutral electroscope, and the leavelwkru 4do,ow36s ;se7s separate. Then a negative object is brought near the electroscope, but does not u4l6w; seoksr,o3 7wdtouch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table.bye v y3-) 9m e3h((pks9abgjv A neutral metallic ball rolls straight toward the object, but stops before it touches it. A (kye-p bv(bye933m9vhg)a js 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 Cog7nger3p xjklm en)g8 9+.e5xulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a ehbv-1c/ ix) ldistance d. The first charge is larger in malb1veh/-)x icgnitude than the second charge.

  Sphere A carries a net charge and gc5*yv0j o e.wsphere B is neutral. They are placed near each other on an insulat0g c*j.5veo wyed table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges onb; x)uy+m z9t8fugn(m both nyx)9(m 8ufztg ;bmu+objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual uqgc+1pv nm,tw-*r -0cs ekfjh 0n+.m attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual cpt1grhcn++0.k q e*fjmmw-0s,n v- u forces?

  Two charged objects attract qe od2v/ ljuc6l1x h3+each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tc+3 hu/edxqv j62lol 1ripled, 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 proton are separated by a distance of 1.0 m. What happ 1udo ne*a;vz,hx8p:bens to the magnitude of the force on the proton if a secon8eux;zo :d, a1bvh p*nd electron is placed next to the first electron?

  An electron and a proton are separated by a distancxcqudp s:.+lib8s5z,)a5o xu e of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed s+oc5 :zpsbadl.5 xq8)ui u ,xnext to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happ w5 3ybsfh/;- 1bjkgs epka (5r*jvj.lens to the size of the force on the proton if the electron is moved 0.50 m closer to the*5g1vs(jf/ yj3 bhkb jk s.5; w-arlpe proton?

  A point charge of +Q is placed at the center of a square. When a second point vca j0alu,lf 5,(pjk8 83a )efihsso2charge 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 three corners of the square. What is the magnitude of the net electrostatic force acting on the positive charge at f(88uvf i elca,la25kojspj ),0sh a3the center of the square?

  A point charge of +Q is placed at the centxw u, hl-m+*vup4e k3a*awb /c69hn prroid of an equilateral triangle. When a second charge of +Q is placed at one of the trian w- xc9* h r/ev*klap+3mnuup6 w4,bahgle'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 hs g,6yt6lyc gq4gr2/is not a vector?

  At twice the distance w ue54 t; w5onnl,nc..;pmy9bz9j-modabjm8from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a k8t()*n(i ppjw j2 ouaa (x0zqnegative and positive charge along the line join w((poq8 tz (*2pjjxi ak)0nauing the two charges?

  Is it possible to have a zero electric field value between two positive chargessm5 3mvdyse*+ along the line joining the+ vme *5sdyms3 two charges?

  Electric field lines near psitive point chargqrhy30nj0f a4es

  The electric field show0o4 d49/;gcedtlcf xjgodw wj773i. qn

  Can electric field lines intersect ia:yq8bztrc 8odmu2:)n free space?

  A solid block of metal in electrostatic equilibrium is placed in a unijo5w.pmva v6; form electric field. Give a statement concerning th 6vv m5j;p.awoe electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamet,d abl4ot;o-t4 b 2jwoers are each given the same charge, the electric field (E) midway bet 4-2 tobabjold,w o4t;ween the center and the surface is

  A cubic block of aluminum rests i4vunge n o8: tb-wi8sr7owm5oj7t(6on a wooden table in a region where a uniform electric field is directed straight upward. What can be saidtmsen8:i -4i ujbr7v685twown go( o7 concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near anxov()-p o habvp+g2z- electric charge

  A positive point charge is enclosed in a hollow metallic sphere thatd7rwa:fl qb/1 is grounded. As compared to the case without the hollow sphere, w1f a/ qlb:rd7the electric field at a point directly above the hollow sphere has

State three properties of c 3hnrb)wd o0cubxf* 01onductors in static equilibrium.

State Gauss's law.

  The charge carried by ope 5ykrzzqjz l(/hprh +4+/ 7ja:g7 wtne electron 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 than ele0.hd+ j1 xp)b yeutk.m9ff )jrctrons does this piece of plastic )y k)1t9.fjbufjdx.h+epr0 m have?

  What is the charge on 1 kg of protonyvdfz9j ,yvn( () wuu,s?

  An atomic nucleus has a cngn, qjh68;or ,o,btnharge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1xv0 u 0jfkyn(vh(ds) (.5 cm, have charge values of 2.0 and -4.0 mC, respe0xk s)vj h(0(n(duvyf ctively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, dpsh7sj5u *nei0ao++ 8mvkg8 and the force between them is 1.0 N. What is the magnitude of8jm+u 8i*0 sph7s kngvo+da5e the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?e fwm0.5eg9ypxk.e4e

  The force between a byy356s hfl:kzdz-j3 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0rrm8:jp h :v gz1q;w1a cm apart, experience a 1.0-N force. If they are moved to a new separation of 8:g rw1 p q8mzrhvja1;:.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC nr-;3 kaq8ocb 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 atc8 qrak-;3 onb 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 +2.2mim+a 6;kfp*md x sb80 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 magnitude and direction of the elepa ;8m+fx bmmds6 2ik*ctrostatic force which acts on the charge at the origin?

  Three point charges are located at the following posuqs, d y-imnio 4c:s1 gt46vy/v91aveitions: 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 charg64qv1ds4,9gy - ii:vtn1 /vesamuc yoe?

  A point charge of +Q is placewo2 pbrz-7i+2 g+i++x 1lom ye d3djwhd at the center 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 the positive charge at the center. What is the magnitude of the force that acts on the center charge if a t+w2d2 lx wibo+gz7i + j 31yr+-mhoedphird 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 am 0jv45x.90 spq;nw c zz,pbegeny(g* t (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the netv(;n bc0ejg zp wgms,z05yxn.e9 4* pq force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 n wn u8-zvpo mdknr22*-C is at (0, 0-2n*z2o kdmrw-n u8 vp). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are plack ahtf v35v4y*ed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the elefhy4a 5vtkv3* ctrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated byux ocx2e/4es/e v)5zy 2i6nie 3.0 m. At what point, on a line between the two charges, would in5xy 2i ) ieu/es 4zoe/e6cv2xt 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. Where on dy8b (x phsl +y9v5e)qthe x-axis can a third charge be placed so the net force on it (qby)+ly s ve 58x9dphis zero?

  Charge +2q is placed at w0v8-pv4zy uo esy d60the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the fpyo 4e svvu00zwyd6-8orce on it is zero?

  A copper penny has a mass of 3.0 gy)hnxaz1ynz 4b.w1u 6 . 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 um0q nnoou;n y5b. :q92md. d7e,(afg0x m hwrmp against the force of gravity by the attraction of a fixed proton some distance above i .ofwh :.dbnnm mq m u;nm,gxq5de9a0r (7oy20t. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads wkn,o8 xdh1q 0bhich are 30 cm long. Both are gok8bq, dxn0h1iven identical charges, and 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 ol pqe)htyi .wi ,b9q h.;/xd*kf +40e. What is the magnitude of the electric fieliqh/,xe*p..qkdyt)hw 9;b lid at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fielwkrmre ku h7l,)(g6p 6d at a distance of 1.50 m from a 50.0-nCu kmg76k6)w,p rlh(er charge?

  A 5.0-C charge is 10 m from a small test charge. What - m2qz durw9et m(w3d0, ynonji5;;bnis the magnitude of the electric fieludzm0tbi2wywr;n ; (nn3- j9me5 od ,qd at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What isxb/dw0m /bde-vw:b /u the direction of the electrbd:bmev/xu ww- bd/0/ic field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnituurehti u6i fu8.;e w9i.(;ok tde of the force experienced by a 1.0 nC charge placed at the location o6;hu .uut8 ;(riieitk9.ew of f the test charge?

  Two point charges ea+ u-d1crgha oqix fdpy+a)1+:ch have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two cha)g-+ qroda 1+hufcxdai y1:+ prges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC cwt ob(9v/6ojfc g0j 8wf5vr2 h 4z/eczharge is placed at the 5cz8jtv j0f5/g/z (wvho w9f2 c6b4ero0 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 and a -4.0 mC c5e/ 4wr0napeh8guin : harge is placed at the 50 cm mark. At what point on a line joining the two charges is thgp:en/ 8renh 4u0awi 5e electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x;dm(2ybtx.kr:o ypi;qt6ch + = 0.20 m. What is the magnitude of the electric field at the point midway betwed 2(pc.kox;t6 tri:hm+q by;yen them?

  Three 3.0 mC charges are at the three corners of a square of side 0.5 a/efy n+r*hw5cc n+7e.lofgg ot0.f *0 m. The last corner is occupied by a -3.0 mC charge. Find the yag+/*nel0.to.n fc*+5 fhrf7ogwec electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at thwtaav/ ;4 dd:1t bj-; *eqvhtve 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 electric field at ttw;tbvj*/4t: a h vd;dvq- ae1he square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform el63co.khr tqzecqc 066 ectric field. What is6 o tqhrcc k630cez6q. the magnitude of this electric field?

  A particle with a charge of 4.0 9m 0gls )q4uozc7nl.qfh0hq,4o27vrh g )ebbmC 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 pln:5qlps7 -)0ghy6om x7ojffuaced in an electric field of 6000 N/C pointing h7qm ox6jg):-n5l o0pfy su7fdownward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carr*2*(- fmo4*veqhqkw vimkb 3v ,) uunvies a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. Wh m,* hvmv* onbuku v *-qe3qw4(k2f)viat are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magw8.j8 wv rjee cm2 ,s2zjbi*(unitude of(sz2w2mei b.8 wuvrec8j* jj , the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radidg(n dz v:1r/8 luhrc:us 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of t(hgz c 1n::dlv8/rurdhe sphere?