State the law of conservation of electric d2sbekhrug8.r6zg 4* charge.

  Is it possible for two negative charges *s9mg(xnqnc ru-ry i*;l5o x/to attract each other?

  Is it possible for a positive and a negative charge to d1(qaxl4ynu gk2;gge 1 0h,uqattract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod acqtd/pc 4v3h/ 7u/htzcquires a positive cha /z73cp/dv4/q tht hucrge and the silk

  A proton carries a

  The model of the atom shdrp+wcq m dzrd 8bne:cu33 .:8ows a

  A neutral atom always h69( x pu)s tj:osg4ncvzos*do* r.o3r as

  An atom has more electrons than p8:)5j )x+v9z bbcb,cdxwlwh trotons. The atom is

  Materials in which the electrons are bo :sadt0 asjqrb89xzmm6 , 2y5qund very tightly to the nuclei are referred to a8j a 6 dy5bmqaz:sxsm02,rt9qs

  Materials in which the electrons are bound very looseldcvo(3 ;l2rply to the nuclei and can move abour3 ;cvplo(l2dt freely within the material are referred to as

  A negatively charged rod is brought n8ydp4tairt +n1*1rm-ab :az aear one end of an uncharged metal bar. The end of the metal bar farthest from thtm y1tza b*r nd :ap+aa-i8r14e charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pg-m5*b.rgea :q3td; ly i x+dylaced near each other on an insulated table. Sphere B is brief :-yx;drilyb*qdmgat 3e +5g.ly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elect v:xbky, tp;r5vv;y. lroscope positively?

  An originally neutral electroscope is briefly touched with a positively chargejmcz6-lb5t( pv -h0u od glass rod. The electroscopth bp0v o-ju5c6 zl-(me

  An originally neutral electroscope is grounded bri, *1iwwr cds3 8qm4;eea:qgs jpat2 7gefly while a positively charged glass rod is held near it. After the glass read c tsgis4w7 ,w:3j g81mq2*ae qp;rod is removed, the electroscope

  A positive object touches a neutr twdx1 6j( gm 9n-iz+;s*q t6,apogdibal electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but doespj9ntia;-w6+g, 1dbzdx(g smt i6q* o not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutqn)*orz(dydc /k4uw /ral 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 rol d/4 zwr*yc( ndq/ou)kls 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 constant/v d)lta z/od895b8n x8tqdj t $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d.667td 3hqq5xt1 p (jwcu rw;tt The first charge is larger intq pq ct7(xj35t6d;r w ut1hw6 magnitude than the second charge.

  Sphere A carries a net charge and spheo0i 24 q-kjblzp (rgk20zie r4re B is neutral. They are placed near each other onzr g- eq(z0kk2b4oipl0ij4r 2 an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract eachs9 n t4p6ho3az other with a certain force. If the charges on both objects are doubled with no change in z64optnh9s 3aseparation, the force between them

  Two charges are separated by a distance d and exert mutual attractiiow5o7qf8 2m+ 1 qsh w6,lnxigve forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual force68q si7gw+5iqwlox,of m12n h s?

  Two charged objects attract each o2yx(vn. 1 hglither with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, anx2n1 il .ghyv(d 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.wq zk44s7x: ux*q dal7 What happens to the magnitude of the force on the proto lzk: * 4s4qwda7uxqx7n if a second electron is placed next to the first electron?

  An electron and a proton are/ger qsekd*)d9b;; i a separated by a distance of 1.0 m. What happens to the magnitude of the force on the first eksd qg )ai;9b d/ere*;lectron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 b(cu) jt6sz 5qm. What happens to the size of the force on the proton if the electron i5)6tbc ( sqjzus moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a sec uew8j)h-:,zbi;hs d wond 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 three corners of the square. What is the magnituh i -:bjw; ed8)zsw,hude 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 3q7tsgktjre m1 u (h(b3/wkt,of an equilateral triangle. When a second charge of +Q is placed at ombs((q/ k 7,1tk jh t3wte3gurne 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 charge of +Q placed at one of the other vertices?

  Which of the following is1msj +;;0,tth ohiu0ffr 3r/vp*0 i xcbu/yi x not a vector?

  At twice the distance from a point charge, the strength of the electric fie ,p2/aog,tdsm8avg4a * vtu4gld

  Is it possible to have a zero electric field value between a negativ1mf9ywom.lxo 3,,qb9 xeni(we and positive charge along the line joining the two charx3q,9bw m9e (mxof1li .y,wonges?

  Is it possible to have a zero ex+3bj x m.+ b4 -t uljcflbcax/83utr3lectric field value between two positive charges along the line jxb j c84+b+33lubla3mx- ufj t.rctx/oining the two charges?

  Electric field lines near psitive poihx68ff(k w +eint charges

  The electric field sho27 m*/r pqlav0s3 rvzmwn

  Can electric field lines intersect in free space?;scn1w ysg ss2 a2xt1u9g8n 0st(sl6n

  A solid block of metal in electrostatic equilibrium is placed w( o0kq(ojafhx1i d6l-3gvf9in a uniform electric field. 3of1 k(hgx o qf-d9vwi( laj06Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each g. w429 kgnvcgiiven tvgk9i.gnc24 w he same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in d0yr dzb6 ;mrdm, :.tna region where a uniform electric field is directed straight upward. Whdm td06, zb:rn;y.mrdat can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electrqld3w 1uqh6v 3ic charge

  A positive point charge is enclosed in a hollow metaz3gc 6di*muj 6llic sphere that is grounded. As comparjm3c6di6g uz*ed to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of condrr m,7w0 9jne3 85fjod4 k zbueridp()uctors in static equilibrium.

State Gauss's law.

  The charge carried by one e0y7 eehwy 9n+u9u 2a/xijp*f i+6 fr)8ndrxzblectron 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 +ojej18xun m vjj6w.2hy,c8op d666m d2.00 mC. How many more protons than electrons does this piece of plasujd6j j. 2w1 oej ,d 86chnxymop6m6v8tic have?

  What is the charge on 1 kg of proi+fbq 0 gl/t+8tfk8mn1v3vkd tons?

  An atomic nucleus has a charge ; ih-v1 1epsmqof $+40e$. 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 and -4/-u . al1js p,x3qfds 8s,zaea.0 mC, respectively. as, ,-/83ds1sajx ueqa.zf l pWhat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 qv1l,46w1ikkhh8sd um from a second charge, and the force between them is 1.0 N. What is the magnituh4d1 16w,uksv8qk h lide of the second charge?

  Two 1.0-C charges have a fofjmk606t9z gj rce between them of 1.0 N. How far apart are they?

  The force between a 7f0 (r9 m kqaonsb+zd/$30 \; mC$ 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 forclk u,lme,3b )+bhuf/qe. If they are moved tokl+bub,3) elu qf/,mh a new separation of 8.0 cm, what is the electric force between them?

  Three identical poinasi2ize x;za -v r991at charges of 2.0 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 magnitu9i2x ziaa; s19e-avzrde 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 m4og8 fg.qjx;g o7+h*cjbuj u/C 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 t jjoc4h/x u*8 ggb.;ouq gjf7+he magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the follow.nn//x9 zef-xyro:o+ zor h v1-rnnl+ing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -+.evzfl /1+zno/o rn9n orr:-x ynh 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 tv9n99;bn1rf g35xd idiv f5k whe center of a square, and a second point chargkrnf9g 595i1b;vinv9 d3fwx de 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 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); Q,/ 0rtmj so c1wsv-sg.3 = 5.0 nC is at (0, 0). What is the magnitude of thetsvj/ c rss-gw, .1om0 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, 0.10 m); Q3 = 5.0 nC is at:ve b; rx0zwuz.+6dmo (0, 0). What is the direction of the net foweu. 0 dzrv+ oz6m:x;brce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the cp9s2,f:oyl a rbxm( z-s-i 7ynyyz24vertices of an equilateral triangle which measures 30obx2sls27zc:4 rymz -(ypy9,ay - ifn 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. b +cu+ic,w n7gi/on/h0 m. At what point, on a line between the two charges, would it be possible to place a c/iiwho /nn,b7 gu+c c+harge 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. dy jk4np(-f 4 l/0wtleb*rgq6osy4d +Where on the x-axis can a third charge be placed so the net force * lk-4r(p0qoy4swgjlb6dn+ y4/ dte fon it is zero?

  Charge +2q is placed at the origin and charge -q g*kxa;2y8bhct * /qrj is placed at x = 2a. Where can a third positive chch * ta r/*j2qxgb;k8yarge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 6tk+6 quax,qxg. 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 againstl m0yvc5i-edm b2.g-y the force of gravity by the attraction of a fixed proton some distance above it. Hl.gyy-0i5 em-vmb d2cow far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a com w-8 cgec vk:qi;(-qmrmon point by nonconducting threads which are 30 cmqrc- ;ewg:miqvc( 8k- long. Both are given 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 of +40e. What is the magnitudeug ;uj9f;wadph:hl *5 of the electric field alhgu59: uh*wp;d ja;ft a distance of 1.0 m from the nucleus?

  What are the magnitu li1jc0csw6rpfbp0j;b/- e/igzm- :tde and direction of the electric field at a distance of 1.50 m from a 5i w 6p csp:fmgb-t00/-b /;i1jj zecrl0.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of7ix9h c9 az nb r1s*4xs*v4uxs the electric field at the location of the test c4x9u sn 4rszc b9*s7i a1xvh*xharge?

  A 5.0-C charge is 10g4ktkthr.e .2 m from a small test charge. What is the direction of the elec. gh rkt.2t4ektric field?

  A 5.0-C charge is 10 m from a small te)d hj04/zd a8fd0 hpfrst charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the t0h da)j/dd0pf84z hfrest charge?

  Two point charges each have a value of 3.0 C and are separated by teia )7 gmx:o5a distance of 4.0 m. What is t:a)txe g7o m5ihe 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 st9plg0 )g2k jrm5l4kvy hs9ny+ap/xw: ick and a -4.0 mC charge is placed at the 50 cm mark. What is thhgy4mjp pv9 +lnka5:0swrlk 9x )/2 yge electric field at the 30 cm mark?

  A 5.0-mC charge is placerzs b4bzu --4cd at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the s4bc-zub- rz4two 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. 41fyoqe b * p/.+cplqoWhat is the mag /ypc1l*4+qfpqeo .o bnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at1i ( ed4(-ckgfw jedm, the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. 1 (d,e -ijw4kgmfe(cdFind the electric field at the center of the square.

  Consider a square which is 1.0 m on a side.sb7h9mq4 w am( 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 (0, 1). What is 74a( mm9 hqswbthe 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 is plah5f *y0yb ey*hced in a uniform electric field. What is the magnitude of this electricy 5h*feb*y0 yh field?

  A particle with a charge of 4.0 rex 7m*efc0gzw8cp eo.;hv;4mC 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 field of 6000 N/C poinxt6*ksz u h2a 28ujpg2ting downward. What charge txuzp*s22a gukj6h 2 8must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 +s9uhh0w9fb3roj m 2qnC. The ball is placed inside a uniform electric field, and is suspended against the force of grubm qfh w h9jor3+0s29avity. What 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 mksf)o22 jt )ao2rgg- wagnitu)go2jk w 2 ga-2)rsftode of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0ip f(cvvrq *lm/l(- ef8dz,0e cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of therde efzpiqv l-cfm/(*8(,0 lv sphere?