State the law of conservation of electric1 svibp:*hotrt: zi:xl9s3 8r charge.

  Is it possible for two nega;*n8egkhe 7vj-zv* bv tive charges to attract each other?

  Is it possible for a positive and a nefiytz**nz- mk1-he /2 illmm7g0 b 3tsycf4+vgative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the p -fq j800w c4a 7dncxw;g+vkelrocess the glass rod acquires;cqdn e l g00f8 ax+wc4-7wvjk a positive charge and the silk

  A proton carries a

  The model of the atom sa/3zkzbpm1/t rne il 9q j:)h2hows a

  A neutral atom always + dkxbjp. )am26r:hr ttbf51dn2 0zyv has

  An atom has more electronsfyu.(9n7q/xv j. vrlp than protons. The atom is

  Materials in which the electrons are bound ;hwbjvkg2rp*() p6 rsvery tightly to the nuclei are referrvwg )p2*b (r6;rj sphked to as

  Materials in which the electrons are bound ver dm to0(:;nbwry loosely to the nuclei and can move a (wd mb0ntr:;obout freely within the material are referred to as

  A negatively charged r3moze: ;6, h0gkgcwvood is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chargek;o: cg,6 mg ozhw3v0ed

  Sphere A carries a net positive charjl 78g jsch)7sge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere Bshs 87jlc 7)gj is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positie4**t nw.z ; kw0lyftxrmk6i3 vely?

  An originally neutral electroscope iswl9tu1*ua2/j0wynu i jjey 8 , briefly touched with a positively charged glass rod. The elect/*u 1yiluynw2,0 ujjaew9j8 troscope

  An originally neutral electrosco;p6k tg8hq j.)eazz1 kqw 1+ldpe is grounded briefly while a positively charged glass rod i+q1lk6j q. 1;tzahw p ekzd)g8s held near it. After the glass rod is removed, the electroscope

  A positive object touches a neut9pqom e9n01o5rciac ;ral electroscope, and the leaves separate. Then a negative 09ropec n1qo; 5ma9icobject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placew*k h7: r ue,bvl5ek2i **bxird on an insulated 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 stops. The first ball rolls forward, but does not touch the negative object. At no time does either ball touch the negative objec ix uielb*vk 5,*rh*:ebr7k2wt. What is the final charge on each ball?

  Charge is

  What are the units of the Ctda dbuvg64 l,o.yk*f:4y5r0xr q;h loulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first c /,3krwijys,jb 7 zdy(harge is larger in magnir s/dyw, y(bjz3j7 ,kitude than the second charge.

  Sphere A carries a net charnjc lti0+ rcu 5b(ne,h(m6p8zge and sphere B is neutral. They are placed near each other on an insue 08(minjcr l(n b5 6czu,+hptlated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If thenlwk9/)0 jv ye charges on both objects are doubled with no change in v)e lwny9/j k0separation, the force between them

  Two charges are separated by a distance d and exefw8jmx:atomoq d0*/7 rt mutual attractive forces of F on each other. If the8da70m /* qox:mjfwo t charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eachl 57sc -lgp:4t+igd 0q *wox 7q8(aalhxqaxw* 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 between their centers is reduced to one-fourth its original t-*q 5awo+ihgl gx7w 8sx:p0a74x dl(c*qlqa value? The force is now equal to

  An electron and a proton are separated by a distance o1iz brda exs5fp/ ev80d8nx3c8 3ub1p f 1.0 m. What happens to the magnitude of the force 1 n zd58bxeu8rf013ex8v/b pica 3d spon the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a disp hvlhmy,yuhk dq),b/2 6b01jtance of 1.0 m. What happens to the magnitude of the force on the first el)yuk 0y/hbh6dq 2m, hl,bpvj1ectron if a second electron is placed next to the proton?

  An electron and a proton are separated by ly gxym ea*e8by7i-v c9b)+s)a distance of 1.0 m. What happens to the size of the force on the proton if the ele v bsyx9m-g l7ye8i)bace* +y)ctron is moved 0.50 m closer to the proton?

  A point charge of +Q is placedsb*msia5.k fl6+xsc4 at the center 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 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 electrostatifx5s*sas.b ikml4 6 c+c force acting on the positive charge at the center of the square?

  A point charge of +Q is 5wsxgsn,ma+ /,njcg 2placed at the centroid of an equilateral triangle. When a second charge/,,2na5wc m+sgsg jxn 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 charge of +Q placed at one of the other vertices?

  Which of the following is not a vecti hx6a-mr36g se1z ki.or?

  At twice the distance from a point charg uc,zmr3qq b48e, the strength of the electric field

  Is it possible to have a zeub ( 7;bomhw)uro electric field value between a negative and positive charge along the line joining the two chamb u)wo7;hu(b rges?

  Is it possible to have a zero el/fy u/t*phbo1c0( yn;evto f; 2ql6hpectric field value between two positive charges along the yup2lof hc0;6vb(*f yenpt h1o/;/t qline joining the two charges?

  Electric field lines near psitive point k(ic26 o3y dfwx:igs7i07u0r bolt:hcharges

  The electric field shm wxntsf79t2z kl-9e4own

  Can electric field lines intersect in fre rq(ut5rl;) kzxmp(5nq8 fm-o :,p gtde space?

  A solid block of metal in electrostaticck+hnb9q5so /f h *e4k /4fzlltt(nx3 equilibrium is placed in a uniform electric field. Give ankf4lhh/ efnk+tlc*3tz(/5qx9bs 4o statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphem9dgns,gl zg6*2qdfc/ c-ei 8re of equal diameters are each given the same charge, the electric field (E) midway between the center and the surg2g 6 ,d/c -8zqisd9g *neclfmface is

  A cubic block of alumin4;vr6uib gtn5td7(ndfcu x58um rests on a wooden table in a region where a uniform electric field is directed st75 tdfng86cx;nt5(d br uiv4uraight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electros1 :ay9gn e vl0pmq1*kmtatic equilibrium near an electric charge

  A positive point charge i2 a(tjg tdy.. pl6b4ors enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directlydgtjr .62 (pyb4o.a lt above the hollow sphere has

State three properties of co3ak9ym :9 oyd,,yqibrmlqh hfs( 80qug0u1 *rnductors in static equilibrium.

State Gauss's law.

  The charge carried by oec :v 4q-qjc5u-d kji0ne 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 hagc l77;2rvr u1c oeni;ru8sv3 s a net charge of +2.00 mC. How many more protons than electrons does this piece of pv r 2un;r7c7u3 8sc1 leovr;iglastic have?

  What is the charge on 1 kg of protons?hy. 4eo bwk- r,d/y1a0hxl m;:eq e: rx;qimc7

  An atomic nucleus has a chargm4pu/ryl 0m 6oe 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 valuestw0asp74z pdgji53 9 l of 2.0 and -4.0 mC, respectively. What is the magnitude of the eletzj0wl7 ip9sp5d4ga3ctric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force bet-v bei/xr:8q-(nw3 4 tqmq8 z-nsfveqween them is 1.0 N. What is tmw- n/:qeqniv8zq q-bet8 r3 ( f4svx-he magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 Napkq /p:6 o7j8phi 9vcj;wepjv;wd5l-wm )( e. How far apart are they?

  The force between a s i77+hk -ttcqq:tuq0bo+h:j $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experyt*tc5lukc -+ gbo)4r3crkb4 ience a 1.0-N force. If they are moved to a new separation of 8.0 cm, whatkt +gctcr4o35b 4-klu)r* cb y is the electric force between them?

  Three identical point charges of 2.0 mC hi, noy*m,5m- x*9hu r2yfxir 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 a5*irynh oyxm,i9m xfh, r-*2ure 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 placed:. q(,ewwp rwyyc29 5wtpghh; j3ha 0t at the origin, -2.0 m C to the righ93t:qy0hw rw. th2jp; a(e wpyc5gwh,t 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 origin?

  Three point charges are locate/qasr5d .qy(qbk k;r9zs y5fb7,aj6 zwj(lm 2d at the following 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 i;7qs(j zyaaf m.rzwsbrkq955d(kq2b,j6 l/y s the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q itz tg/; v0;k/a ij4ucjs placed 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 2.0aiz /c t;gk;04v/jjut 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.e*ep4w.pm n(eu.ais5 7zkws 910 m); Q3 = 5.0 nC is at (0, 0). What is the magnituw 9.. as7*(wp em u4e5nzspkeide of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0fz/ 2sn: mj5l8-b 2za6inew ak); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction zelz/mni:s2b-65 aaj 2 fw8kn of the net force on the 5.0 nC charge?

  Three identical charges yac+jb ,4lc,tof 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force a ,clj4bct,y +which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3. 4c/am b8pasi30 m. At what 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 z3 m4aiscp/ ab8ero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Where xk8w.b3 (z4 fdj+bjxx on the x-axis can(jw .xx43+fzj xdb8k b a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is p+x v3vu*uqb- nlaced at x = 2a. Where can a third positive charge +q be placed so that the force on it is zero u3v+vxuq-bn *?

  A copper penny has a mass of 3.0 g. A to twkt.(li 4m/u:4uh mptal 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 agains a.u)fqafqf1/:yq 4 btt the force of gravity by the attraction of a fixed proton some distance above it. How far above t b1fayq4qa f).qut/f:he electron is the proton?

  Two 0.20-g metal spheres are hung from a common point byf1 uy8geu:dgq9hl*y - nonconducting threads which are 30 cm long. Both are given identical charges, and the eleq*1 uul:98-hdgyg y efctrostatic 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 chargwv dzozl(:hi+;e6 .gie of +40e. What is the magnitude of the electric fiidog(i;h :w+v z6le.zeld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a: (pmkptfhte-/j: i-f;k .r6qsasia: distance of 1.50 m from a 50.0-nC ;( / 6ajmi-isf e-:t:h :sp.pftqkak rcharge?

  A 5.0-C charge is 10 m from a small test charge. What pkd: :3r1xrdutwr8; yis the magnitude of the er8tdurx3:r1;: pkyw dlectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What 3j2yks0enis69 jmw1 pis the direction of the eyjwp kis36n 1je0 92mslectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the fp0ppmo r xpfw.ry 45er-io(ui06j4: gorce experienced by a 1.0 nC charg6( wr:ep 4 girpfp4-m.jy o0riuo50xpe placed at the location of the test charge?

  Two point charges each have akk o c)w:m0:6z2dr;wt tioj/x 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 i6 2dokjmw kz/x:t;o)0crt:w charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 8el0fcxn n0 2s,9ewldmC charge is placed at the 50 cm wdls9,l8ec0n0 xn 2fe mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed 56dm g1maupn l2 /9)s4m umjswat 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 th 9snap6 mug)mdsj /4um21w5 lme 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 +ov z; nykw4-p5cy*g m= 0.20 m. What is the magnitude of the electric field c g+y*on-;kw5mvy4z pat the point midway between them?

  Three 3.0 mC charges are at the three corners o 5us-v scpf8v:+bt8ww f a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the elw+sbwsc v85f:v 8up-t ectric field at the center of the square.

  Consider a square which is 1.0 m on a side. Chargee(32zqxzmuj m(1 ve8k s 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 the magnitude of the electric field a( ze2ummzjxe1v3 k8 (qt the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform elect-miw9n y. ,efpric field. What is the magnitude of this electry,m9f pi.w-en ic field?

  A particle with a char:8d/y ujpe(pnnpf6.sc* n,6 kby nk p)ge of 4.0 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 placed in an electric fieldjpb(t3y7wy. gt , zb-g of 6000 N/C pointing downward. What charge musbt -py(.wjtg7b gz3 y,t be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carrw2 3tma 4d1/eksnm+ czies a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. +2s 1dcw/ knaz3mme4 tWhat 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 magnitu(*xqtysquq-y bwa3 ;*de of the electric field 5.0- (ywyqa *;qq3uxbst* cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge o(e:0xk6g -kgc/ hmxoi f 3.0 mC. What is the electric field 6.0 cm fromo k:xx6mk g(-c0 e/hgi the center of the sphere?