State the law of conservation of hk 8b(kuo+yxvv ) bd1wz9y(8eelectric charge.

  Is it possible for two negative charges to attract each othe pnikiv;(,89ym j8wumr?

  Is it possible for a posit fc*)1ez2 a z/ms+95bj, dkmdflr3 wnlive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the u qn8z8wphh3.glass rod acquires a positive charge anwph8 .nu 3hqz8d the silk

  A proton carries a

  The model of the atom :7 eu bcvtl1c,shows a

  A neutral atom always 63pu3ke m/ 03 .q8u tdweia crmk(9feyhas

  An atom has more electrons than pro2 4lajh6e9sv-dul e c;tons. The atom is

  Materials in which the electrons are bound very toifg; upp -u+d y*)a7u dlph/g93 hx*rightly to the nuclei are referred to aygdufu*p3 ph/p9xulr+h 7a d; *o-i)gs

  Materials in which t 0;q; kl-t5)7csnvuvhi 7t9i3 chszmhhe electrons are bound very loosely to the nuclei and can move about freely within the material are v9m;qvctss0; -h7lickn z)t537hui hreferred to as

  A negatively charged rod is brought near one end * bfo. ypgljvr*l1d79of an uncharged metal bar. The end of the ly7fr*9.vdgbl* 1 o jpmetal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and f/rad ec 6r06kcpph2a8g ;/vbb 4:ym usphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is k0 a 6/ ucyrbdmhvecg 8 /246pb:rfa;pgrounded. Which statement is correct?

  How can a negatively charged rod charge an ;1oz ca h;kvct;i:;lmelectroscope positively?

  An originally neutral elecfk l5vc5b 9nc pel-l47troscope is briefly touched with a positively charged glass rodc74pfvl559b-lkln ec. The electroscope

  An originally neutral electroscope is g2rdf s1g+ha8;+i/mrs h9a wevrounded briefly while a positively charged glass rod is held near it. After the glass rod v+/fahs2; gd r iha w8r1mse9+is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sep w6ob))tgf jm7:s3-p*uns osparate. Then a negative object is brousbnp3 w)sjot7og*:mpfs )u6 -ght near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an ins- rc.0nu0 fxdky;yr ezn4ai4 ,ulated table. A neutral 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 stopiz0xya.f ;,ny-dur4cn r0k4 es. 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 consh.0is 2zqjh m,tant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge i wp2,cvf qvq()s larger in magnitude than tpfv ,v(q)2q wche second charge.

  Sphere A carries a net charge anxm9q 3a,dcy pn b-.;,yk9w+,hhplx qed sphere B is neutral. They are placed near each other on an insulated table. Which statement b hql k ,+nc,yqh,- wbmey9ad3.x9p p;xest describes the electrostatic force between them?

  Two charged objects attract el bku 9x-r0-cl4o k5.qu9uauzach other with a certain force. If the charges on both objects are doubled with noc 9 5uboqa4luu-kk 0x-rl. uz9 change in separation, the force between them

  Two charges are separated by a distance dc+y-hm ,1h 7eympui5 m and exert mutual attractive forces of F on each other. If the charges are sh mu, yh+imcpm5- 17yeeparated by a distance of d/3, what are the new mutual forces?

  Two charged objects at62awch / v)qnktract 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 betwe/kcv)a2nh6 q wen their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated bwqold zag9b3f2m* :+b y a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the firs+ dbwofa*2blg3mz :q9t electron?

  An electron and a proton are sep5ve ryh1y-c*xarated by a distance of 1.0 m. What happens to the magnitude of the force on the fircy 51-h*yerxvst electron if a second electron is placed next to the proton?

  An electron and a proton are sn +stl1l)b1vvipc)2 leparated by a distance of 1.0 m. What happens to the size of thesv) l1tcl1b)lp+nv2 i force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the cent kqo2c47 8wo 9adnzcf/er 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 squfkq/now8dz2oca4 c79 are'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 the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral trghvw :u y* w*9u 2ms.efnn,s/liangle. 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 cv 2h./,9msuysn**:wuwl ngef harge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vectopylwfw+c -o-p/.4r;2 iqgig./ zksapg onv:0r?

  At twice the distance from a point charge, the strength of the elk+/0gp anrc n0h 6m(;.uuzdru ectric field

  Is it possible to have a zero electric field aj1lezgvi5vr 16io, jz1 0q -vvalue between a negative and positive charge along the line joining the two chargze1i6 0,govqv1v-zra 5 1jjlies?

  Is it possible to have a zero electric field va5lxln)ar;d ta 0,xw-z lue between two positive charges along the line join0ax,-rd xt) zlal5w;n ing the two charges?

  Electric field lines near psitive e ncd o)u 0/yi4bdnp-(point charges

  The electric field shoju x/m6efm8if7si7s . wn

  Can electric field lines intersect in free ;b-k4 e.,baetg2sgeespace?

  A solid block of metal in electrostatic equilibrium is placed in a uniform haghv/0xf dtf06gt g2s7 gg53 electric ftdv7g shg x502fgg30 t/ag6fh ield. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere a4n-2cmqgz mfv - i.r2i6.afoand a hollow metal sphere of equal diameters are each given the same charge,io22vfnmf.6maiqz.rgc 4 -a - the electric field (E) midway between the center and the surface is

  A cubic block of aluminu/uetw ni 0;1mfm rests on a wooden table in a region where a uniform electric fielun 10meift;/w d is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electkm h51 3cs0cxn8uv:dn rostatic equilibrium near an electric charge

  A positive point charge is en3 h ib8)x ojnv/9yv.gyclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the elect.h yjx )gv8iobvn/ 93yric field at a point directly above the hollow sphere has

State three properties of condg vre/ gs1ghqb/2 -wv35fzg: uuctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is .npu li;z2s5vh,mug 8 $e = -1.6 \times 10^{-19} \; C$. 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 qjcxed7 7 aj/*more protons than electrons does this piece of plda/e j*x77cqjastic have?

  What is the charge on qs ,6tuzyj2 t kc.9lh11 kg of protons?

  An atomic nucleus has / i -0oktp6+)oj/qb6aenjt kfa charge 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 and3jfb 35t (skbv :m2ebd -4.0 mC, respectively. What is the magnitude of the electric force between them?5:ft ke mvb 3j32d(bsb

  A 1.0-C charge is 15 m from a second ch hvh8jwdnmp- 1+ohj9: arge, and the force between them is 1.0 N. What is the magnitude of the second pwj-h:+n1dhjh9 vo m8charge?

  Two 1.0-C charges have a force betweezk c.bzc5w 8i)n them of 1.0 N. How far apart are they?

  The force between a uk:6(l4gm pb r$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 qeas0bm 4p1o(5 )x xt 6aucem*cm apart, experience a 1.0-N force. If they are moved to a new separationx aom*e65eu c4xb stp1a)(q 0m of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first j vhfy.ahhf1/ ml85tx-p39 o mcharge is at the origin, the second to the right amap l.8/f3tf 1x jo-m5yv9hhht 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-ax yo/5y*/un e.zs+ 5rlhhi i1wpis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 55wyln1yz+s 5/ *iir pu h/hoe.0 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 foiniqnj;n pn;5 ):-c ii;m ftv+llowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 ;5niqn:ii+ic jnm-)p;vf ; nt = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed fo1z u:e ,61gh1 n k*v6ssxyke4;lmisat 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 chakk1s ne6i1 zo g1*:xmsv;e6 ,suh l4fyrge 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);63j 8mup eaxx; Q3 = 5.0 nC is at (0, 0). What ipmx ;836auexjs 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, 0.10 m); Q3 = 5.0 76 h . u iucgipyezol2*(1vr)inC is at (0, 0). What is the directioniu)pr *yo i2. veizcl 1(gh76u of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an eqy9/snvdj :t1b uilateral triangle which measures 30 cm on a side. What is the magnitude of tn/v9 1:sb dytjhe electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. Azu i7inpzz u68i+--)vsoc x3dt what point, on a line between the two charges, would it be possible tuu v x-3inipz7- i) z+cs8oz6do 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-fk9k;ej 9 ,jrqwr 7lc = 4.0 m. Where on the x-axis can a third charge9r-q7;j9lkwc frk ej, be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2wfb1 bqciq)/14eou 7v dwa3m8a. Where can a third positive charge +q be placed so that the force on it is zero?)4w 378adwm cb1o/fv1 qbeiqu

  A copper penny has a mass of 3.0 g wzz)r rx/;su;. 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 a7 r7 (siu.crstttraction of a fixed proton sors(7 csi.rt7ume distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point byk8j/ kv /hu*1t,gmfyb nonconducting threads which are 30 cm long. Both are given identicab8jy1 k v g*ukthf//,ml 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 +40fqzu2x im2m8/ e. What is the magnitude of the electric field at a distance/fqx82mizmu 2 of 1.0 m from the nucleus?

  What are the magnitu2pvp :l0vbo.a de and direction of the electric field at a distance of 1.50:2.vavbp 0o lp m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude/xi3) b,dzk,ytd/t snkh: g3e of the electric field at the location o,ib/,)gy/n:s dtkdhezk 3 t3xf the test charge?

  A 5.0-C charge is 10 m from a small test chargegbr2s*oe22z8 edk.4k(-gv z/rcnir r. What is the direction of the enbgz2/i-(rc z k8 es rk24e* d2ror.gvlectric field?

  A 5.0-C charge is 10 m from a small test charge. What is tbg9d p3b6 -q1zkqqc3ihe magnitude of the force experienced bykbdq6gqb 9 q13pc i-3z 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 separated4i p/hqzoi1/lh n +(fidc7:lj by a distance of 4.0 m. What is the electric/c l7+qfi jo nilhhzi(dp/: 41 field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a mete+c oyu3)j-k/qd6() mxbmh b rqr stick and a -4.0 mC charge is p)/x+u yorqbqjdc-3b)6kmm h ( laced at the 50 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 chap4z k9gwd+3uhrat8x6 : hqk:g rge is placed at the 50 cm mark. At what point on a line joininh g kp z8xdu3a4 w::h6tgkr9+qg the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at s9jigkfl .om4qw1e h5n3,+dk x = 0 and x = 0.20 m. What is the magnitude of the electric flq,gmik9 jwn d.f5+3o4seh 1kield at the point midway between them?

  Three 3.0 mC charges are at the three corne y-7w)kp x/2 uwxdmswb17gd*k rs of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find thebw-u12dxm*kks7wxdyw /7pg ) electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges )g jrt;t3ea-* sx4miv 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 (4 3t;)ri xtgmas-* vje0, 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 is placed in a un2.ura fs9,zkp iform electric field. What is the magnitude of thi2f., uszp9 akrs electric field?

  A particle with a charge of 4.0 mC hxvn (0/ r.gxci.t gu.las 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 electr e0w4 h 4u.tvv6n lyuw8t4e8uqic field of 6000 N/C pointing downward. What charge must be placed on the ball v el .n yeuw6twvht8q04844uufor it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The balxx:+gz sb+049 im1tvlvxi6f r l is placed inside a uniform electric field, an+vm4:lbs1i +fxrxg z69ix 0 vtd is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge mppupy 28so/( of +2.0 mC. What is the magnitude of the electric fiel(up/poy2s m8pd 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 the elec2a)esxd2* 4bavt lhj r;hrt7*tric field 6.0 cm from the center of the sphere2l rrad7h 4he 2vt*s*xb;a)jt?