State the law of conservation of electric c(. .ma ijtzdb0:y; adcharge.

  Is it possible for twc 9,y 1cgdkajo qqu0(m4fz 5+wo negative charges to attract each other?

  Is it possible for a positive and8 iokqvvah of5 5vfs, 1:fdcy(3s;p(j a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the procud i)z*8hyvs9p27cmm0 (cksf ess the glass rod acquires *)dc(mu2czymp098k 7 ivshfs a positive charge and the silk

  A proton carries a

  The model of the atom shx*+djvi )vgp +z/ puk/ows a

  A neutral atom always td- a3vu k0uc1has

  An atom has more electuo0;qd w;c 7pwrons than protons. The atom is

  Materials in which the electrons are bound very tightlaijf53da h5gydy5g/ct x 4 ,+iy to the nuclei are referred to as5,x dya5+ygi/iac 35th gfj4d

  Materials in which the electrons are boauv2x h9 .jke7rsoo*:und very loosely to the nuclei and can move about freely within the material are referrhvuoe27s.a:9jk *xr oed to as

  A negatively charged rod is brought near onn w4a( +r(qjvtl a, hsnd1nd3+e end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will b (naqvdh3 4,nlds tja( 1wr+n+e charged

  Sphere A carries a net positive charge, and sphe 0 y6y rnt-y0r26goknore B is neutral. They are placed near each other on an insulated table. Sphere B is b r6yytg6-o k0oy02nnrriefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an s seq l-1tqsm,* xpr.-electroscope positively?

  An originally neutral electroscope is briefly touched with a p 2kd0 hy4anm4+h0piyde--jpbhv 54 ynositively charged glass rod. The electrosyjevk hd0yd5n 0-a4 hp+bmhn24yp4i-cope

  An originally neutral elect(9+o,b mwd-: ag 5cn3pv/zl3snmwvdub- ct2q roscope is grounded briefly while a positively charged glass rod is held near it. After the gla-,c alvu(mq p93 5+ osd zdwbbm: 3cw-v2gnnt/ss rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. )bxxi fnuw+32Then a negative ob)3w+i2f n uxbxject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged/45cxb,s4 pui u-hbde object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops befo-up4bcb es,4d/xuhi5 re 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 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 Cq) j23-fxhrmv dmpb):oulomb constant $k$, which appears in Coulomb's law?

  Two charged objects amo +iwm.c1 d p-e9pzprlz*ddeb85, 7mre separated by a distance d. The first charge is larger in magnitude than the second z98o -mp+dr1 dm*cml ,pd wz7i5be.epcharge.

  Sphere A carries a net charge and sphere B is neutral. b9;+4msbi q-zw,ya e0 :yalcw They are placed near each other on an insulsw c bl4wb,;+amiy0:- aze yq9ated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charge w vd(5 d9gtxf 4m9olb/lu*)zds on both objects are doubled with no change in separation, the force b)omgt d b*x zl9(4 u5/fdwd9lvetween them

  Two charges are separated by a distance d and exert mutual attractivevtt(qw m5p filb-/. 9m; mjh9n forces of F on each other. If the charges are separated by a distaj9vt5 m(wnihb t9 -;mq./pflm nce of d/3, what are the new mutual forces?

  Two charged objects attract each qa d8:(7m 0dq -ickcq 5b)u plgy,detro+6c/oother 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 85q t cdg0iu,keo cdl a/(q -b:)c7qyrdpm+o6is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are s6fd9hxll y: tl.ii8mh5s c4(ceparated by 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 firsf8h l6 .hlmx:i9 ysl(dicc t45t electron?

  An electron and a proton are separater)z(d8rkn- fmd by a distance of 1.0 m. What happens to the magnitude of the force on the firstz-)mfk8r (drn electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance 1jei; ,mn /nkcj:tjou24no /wof 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer tjn12,w4cjonn: ;k/o/tim ju eo the proton?

  A point charge of +Q is placed at the center of a sav;pkuy**o; p2.izr*rg t 8sjquare. 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 s *oyv;r*jzk. ;pp82*t raus giquare'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 triangle+ (w sh))1iu7trs9c rfr ica7n. 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 tc+hrn()w r9actfr si 7s17i) uhe center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is pied*z bg+g/5 ;/pk,jpk9q xqtm*2a jnot a vector?

  At twice the distance from b8l/ :muzhpvfa rp4-7a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a nxuo)c 4f-7kskqgxv /x;eoxzy/as- 5+egative and positive charge along the line joining ts/ qcx+45-xs xgfy/o kv7 eo)- za;uxkhe two charges?

  Is it possible to have a zero electric field value between two z lss.9jk7ze;o9o1 y1 z(gx flpositive charges along the line joining the kxf;.7zs19oz 9goz e(jls l1ytwo charges?

  Electric field lines neyl pzula, q-swev9odu)/ rqz-p1:f 1 )ar psitive point charges

  The electric field sr( 6x/n5vde9z dw:g sjhown

  Can electric field lines intersect in free mq*0q;05nguid3ke9hv(jb pd space?

  A solid block of metal in electrostatic equilibrium is tu. kc9xqy r(s:4md u3placed in a uniform electric field. Give x.49:yqdru3mtc ku( sa statement concerning the electric field in the block's interior.

  If a solid metal sphfd) ca1-xb2 gdere and a hollow metal sphere of equal diameters are each given the same1)adxfc 2g d-b charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a -ggxe, n 6(ud.myn; t603aorn dx,9j x hkuel:region where a uniform electric field is directed straight upward. What can be said concerning the . axxn ro k,;x gee6u0(-t gldjnnd9h3:y,u6mcharge on the block's top surface?

  If a conductor is in electrostatic equilp5n.l hdtu dzhr+x4:: ibrium near an electric charge

  A positive point chargel- 1m3xmehyxfg2w* 3b is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow s3eb2 1xfyg-3m wx *hlmphere, the electric field at a point directly above the hollow sphere has

State three propertieuwvv ire4yks4)il y,1l8axqb2blq20s 6v 5t0 s of conductors in static equilibrium.

State Gauss's law.

  The charge carried by ob7c u-75bflr h(o+l nmne 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 char/12 hekz0s82lvadzv fge of +2.00 mC. How many more protons than electrons does this pizh0zk1d2v 2vs 8fael/ ece of plastic have?

  What is the charge on vo mw*hg8.jc(x4* p8 , rtznvy1 kg of protons?

  An atomic nucleus has a charge of s o5vg2rj+)ny m -bp +m:uvj(z$+40e$. 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 3)ee.ap o+ k fodj(j/++u.vtga9oypm:flps 3 charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the e) +tmpp3.fo +(.le9oj k a+sy:/g3epajvduoflectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betw/y8fz .)nq(a5jr5c4zgd hhdx een them is 1.0 N. What is the magd5 rhh (.c5f4n y8)zjqaz/gd xnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.no ibvt8)j+nea,uexk, v);x-0 N. How far apart are they?

  The force between a wv7/jwn(s eszga; (7c pi5vk 2$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiey ngb,75e3mu k,/ gw1lsn08h4etpgywnce a 1.0-N force. If they are moved to a new separa305t w,hngygg7 8nymbepl4s wk,e u/1 tion of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are place cfg b/ u 4o2: ;b u6lp0nl;se:3cnbjw/yv6xeyd 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 direction of the electrostatic force which acts on the copgu; elcvyns0bj324web n6 y/f; / uxl: :bc6harge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.5tke:h eh+q, i0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mtk,e :hhe +qi5C 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 following positions: Q1;m1ama3 g, 3dpt rnt ;6ica+fp = 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 ofpata;m,3ci;g m1r f na d3p6+t the force on the 3.00-mC charge?

  A point charge of +Q is plau.nc( d f.p/cwced at the center of a square, and a second point charge of -Q is placed at the upper-left co.uw dpc/c(n. frner. 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); hd4tgf sb/:h5( w ffj +;nz4vfQ2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net forc hwb4/f fft; sdfhj4gv:+5(zne 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 m2 lki 2xm7+wlq7y. zlc); Q3 = 5.0 nC is at (0, 0). What isc7 27ql+.2x zimyll wk the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatera2e 2.h wh92bgh3 lkzeac0* 5vwn0huldl triangle which measures 30 cm on*az .nl2 0hw3ub50 2 e hwgh9hdkvcl2e 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 wh1 k/;ejjw**c,rmq.e ck5bx fm zw3+reat point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be z,w* mzqkm.3k;wjr*ecrx/bef c 15 ej+ ero?

  A +3.0-C charge is at the origin and a +9.0-C ch.eb/zegtq/26 )z( 0c9s2lyunlq aql warge is at x = 4.0 m. Where on the x-axis can a third charge be placedglq0l9./2wn ceeq/s b2l azq y6)u( tz so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed a;fxtiy*/ gnk4/ xo-ef t x = 2a. Where can a toyft n /xx/g f-*;iek4hird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of pibfmuk gm5 46(zu)p yinm8, .$4.0 \times 10^{12} \; electrons$ 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 attraction of a fi. y)iz jy /mdn+esm-;kxed proton some distance above it. Hos)dnie;m zmy/+y.- j kw far above the electron is the proton?

  Two 0.20-g metal spheres aw kf zi;jt8v3yj26 -mure hung from a common point by nonconducting threads which are 30 cm long. Both are given identic2k w iy38jzu j6v-f;mtal 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 magnitude of th ssccse,u gt9b*1vw )(e electric field at acse v)( *t9 csswu,1gb distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fieldk7jpcepry v0+- c*7k*e8q ljc6dh b qrn 8+8ko at a distance of 1.50 7o0 -jdjqk*nqc7+lc8 h ebpr6k 8+ek8c*pvyr m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a sma1haksib xywb88-jd:ew-.dd5 ll test charge. What is the magnitude of the electric field at the l1yk8xswe.8abh-ij d5bwdd-:ocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction ocj )f70y t4yolm5ftx x+w0 n0df the electric fieldltc0 f+d70mwx nfj o0ty5yx)4?

  A 5.0-C charge is 10 m from a small test charge. What is b )ugcb*tdgv-cwz:8 8/bv-i zthe magnitude of the force ez vicb8*) -gg-/ctbdu: vwz8 bxperienced 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 a pnpz.r zbn8f38v3 :eand are separated by a distance of 4.0 m. What is the electric field at a point midway between the two charge388av:rpn3 eb. zzfpn s?

  A 5.0-mC charge is placed at tmzy;y0 cva*s1g :eyy0he 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric: z00cam ygyv*1y;eys 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+w b,:vsh9q uma. d7uc.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric fcuqd ,h7.wmb+ a9us:vield zero?

  Two point charges of +3.0 mC97oggxw 0;yi ra,z*ck and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field gkgz;xc0a y ,wio9r7*at the point midway between them?

  Three 3.0 mC charges are at thev/qe-kp6pkz 5f5 zz6f three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squarepv5zkk zfeq5p6f z/-6.

  Consider a square which is 1.0 m on a side. Charges are placed at t: aojqzuc 7)o7he 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 the square's centerzj cq7oa )7:ou?

  A force of 10 N acts on a charge rpw6) ;mmk 0bpof 5.0 mC when it is placed in a uniform electric field. What is the magnitude of thm p) ;6pkrw0mbis electric field?

  A particle with a charge of 4.0 mhwp iuaxq78zdl/96 , yC 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 Nl; x4xjra)j dg4rq v55/C pointing downward. What chr5);jxjqv5 dx4r 4lgaarge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is pla kv):qbqlulu k (tyg).f4p,i0 ced inside a uniform electric field, and is suspended against the force of gravity. What are the mg:ql f()i4.qul0y ub tvk) p,kagnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. -ra: a8 b avcw88uk3pa What is the magnitude of the electric field 5.0 cm from pa8vaw38au-a bk: r8cthe sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.ah s/l w +b5uo8pef* (q5qy(ng0 mC. What is the electric fiey owa p(5u /lnq*bgqh (e5s8+fld 6.0 cm from the center of the sphere?