State the law of conservation of electriql5rlyx *bs0 4 )4 zfjc-,; qzpdbsf1tc charge.

  Is it possible for two negative charg1nz yv/e/l6x9lk(jbgh1kh *h es to attract each other?

  Is it possible for a positive and a negative charge to attract each other?a r/.esa abzqb9 kq9*g 5 bneq4o.p1)p

  A glass rod is rubbed with a piece of h7*kxoh+0ll 9yr+ sm. pa atok4k7ii*:m 9dgtsilk. During the process the glass rod ac97 lka.7k40tdi kl:tpg*hh+rmi+s xm9y o* aoquires a positive charge and the silk

  A proton carries a

  The model of the atom showjsw e i0*xvl:c9 fc*a8s a

  A neutral atom always has9qz 6n297tnovx:0z e0y jg9lam9xsus

  An atom has more electrons than protons. The atk; c;ph3 zmguq f001srom is

  Materials in which the electrons are bound very tightly toz7mpjrh.rh, 5 the nuclei are referrep 5j7,mh.h rrzd to as

  Materials in which the electrons n:f8c,6yexg 1)l ogm uqs/t(brue5h 6 are bound very loosely to the nuclei and can move about fre /y,(hln1g6so8u:xqm )5g eb 6t rfcueely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharge3rz f;oyth;1vy a7g az2n7u 5sd metal bar. The end of the metal ba zu7s5ot7rv zf gy;;ah3a 1yn2r farthest from the charged rod will be charged

  Sphere A carries a net positive charl6 nvj3mkdgjopp t 42h) ev6,,9w-1b :b shkhyge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched 6o-bywvvk bp eh:p4sm1n , ht,k2 gjhl3 6d9)jwith a wire that is grounded. Which statement is correct?

  How can a negatively charged rob ./;oi :- mteuwiz,osd charge an electroscope positively?

  An originally neutral electroscope is brieflypgpx x.* m+q;i5(us rl touched with a positively charged glass rod. Thuxrp5 sl(.mg+qxp ;i *e electroscope

  An originally neutral electroscope is grounded 7* n8eefl9ry bbriefly while a positively charged glass rod is held near it. After the glass rod is removed, r7fybl* 9ee n8the electroscope

  A positive object touches a neutral electrosco9ma bokadbe-9njm-ug(pzn-by : 7-c ;pe, and the leaves separate. Then a negative object is b-b p9a ( ogeaj7n9k-b-nb:;yz-m mdcurought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged obje8 tmztx7ak5 -hct is placed 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 h mx-8 ktta7z5stops. 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 Cp..t7yr 3u)cd t+vwv zoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is l8z h*dw/h5*y 0eua mdwl-vbutf u1a6/arger in magnitude thaf0a-hwt56hezvm * d*dyulw/1 /ub8 uan the second charge.

  Sphere A carries a net charge5mckgd:*rf.n 7cb*/nnu f. pm and sphere B is neutral. They are placed near each other on an insulated table. Which sup5cf b*7.knc:dn*/rgm f n.mtatement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. I1qzxj48j/umbtl82w4 sn palf5q h ,m,f the charges on both objects are doub 8pw,5l m /84q42tux,1jn qjsfzalbhmled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces of a+m9fj7(5 ,i+- ckhdsqspbqvcoh-u; F on each other. If the charges are separated by a distance of d/pqs-5 h;(b7cj qk hov fcmusa9,+-d +i3, what are the new mutual forces?

  Two charged objects attract each othva mr 66e34mvq4s)bdx tu9,jwe +fv5yer with a force F. What happens to the force between them if one charge is doublejmvwxv944y3t d,)f 6ees va+qbu65 rmd, the other charge is tripled, 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 separuvlnazr+1mx3bva6 +b epnk3d/2 /0q qated by a distance of 1.0 m. What happens to the magnitaz1d6up kl 0rvq+b+3v /bme2q 3nx/ naude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens u 3ev(va. z+( 8kte,g nbdn*kato the magnitude of the force on the first electron if a second electron is placed next to the pr *k+a 3,gnukee z8bta.v (n(vdoton?

  An electron and a proton are separated by a distance of 1.0 m. What hap *ar;(ov/ e/g akp1fxkpens to the size of the force on the proton if the electron is moved 0.50 m closer to the praexk ;ra( o1* pfgvk//oton?

  A point charge of +Q is placed at the center of a square. When a second poin*x vk9kwgnhko b 2,/7k0tfzt9t charge of -Q is placed at o 0h/*v t zx ,kkt2wgbkk7onf99ne 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 the center of the square?

  A point charge of +Q is placed at the ,w0q 4fv2xj(z5xpqoz centroid of an equilateral triangle. 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 a xz(wpqj,0zv5 2fx o4qcts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is bvqb 4rc2 on;4g+ *ihxnot a vector?

  At twice the distance from a point charge, the strength of the eldl h bebty73swn*-x++. jt, zaectric field

  Is it possible to have a zero electric field value between a negative and posit:i-o jn oggx-g44v -hiive charge go-g4xh:4v-i nog i-jalong the line joining the two charges?

  Is it possible to have aieax7vw6s ;k2 zero electric field value between two positive charges alosv xk a67ew2i;ng the line joining the two charges?

  Electric field lines near psitive point cha7 gfiwfapce/o:)z.l2h3d tokr*o0q4rges

  The electric field showgj.:kc6z ykw v1 wv+,tn

  Can electric field lines intersect in free spa*p/cvl9 +4 k-pqkw nfwce?

  A solid block of metal in electrostatic equilibrium is2wk wqtc +2ol+ placed in a uniform electric fi+2klq +t w2woceld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphets4f he13h tn/c;8x tdre of equal diameters are each given the same charge, the electric 8nt fd s1eh4;t3htx/cfield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wosme-4et3et lb+tky5 y x8p/(i s0b:md oden table in a region where a uniform electric field is directed straight upward. What can be said concerning mb0dy -:(blt3e skitp/5m 8x+t esey4 the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electrx,/+fk:q ko- pahw-auic charge

  A positive point charge is enclosed in a hollow metallic sphere thatrgy.5izl6w1k ;j7v qt is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere h6lgt .zj1 w5i7ky; qrvas

State three properties of conductors icqpdfo n-yh8f6u2 1k 0n static equilibrium.

State Gauss's law.

  The charge carried bytm22 h s/pw7jl 9yqen2 one 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 cs27,f)-k0 km,kn0fpwrwqo u h jl 6vf2harge of +2.00 mC. How many more protons than electrons does j7lo f 2kvmf2kswnw u0,hr6qk- ,pf0) this piece of plastic have?

  What is the charge on 1 kg of prot0p het,-*mky.8s g/t g pcuk7qons?

  An atomic nucleus has a char27 *av6hkdflw ge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.q8y nsmef,/aa797uog 5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of to 778sqn/f9 ma ye,aguhe electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force -l z1t+3jl ;lj:5g pbf08us/wk rzaywbetween them is 1.0 N. What is the magnitude of th+b-z5j1 lsk fwy3 tgpzul:a0l/j8;wr e second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are th( +l vtv*i+mt6 t)i)4nswjztr m-pg6aey?

  The force between a )zteh x5 4- xlgpjzz5.f5xp0z $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience aepu:c mtz 3fz-0 wt,)f 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electm: fzuw-) p 3teczf,0tric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chaxo7ov75v 68rro vdbo 1rge 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 charge vor8d ob 7vox5rvo167at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC isg2sm1r u i3j8o:p)d zh7mx3td 16 awkx placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark. 7p32 xmtdodg1ws18 jrz m)ax3k: ih6u 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 /ta. -)+je9j klk kc p)kyad8y= 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 mag jp/ ck+ya k8kk-aetl)d9yj).nitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the cpjdrqe 2-ozzj2tym ,p2j1, r 9enter of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an ezr9j 2r-dq2 y,1e2ojj ,tmz pplectrostatic 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); Q3 = 5.0 o6b :q;bkf+vgnC is at (0, 0). o+q6 kvf:b;bg What is 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 nC is axr 3hvm3 6:v; gjw0 szr.iy;git v;sh vx 6:r0wyi; jgm3. 3igzr(0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the ve*q 2u3i (3vpkevsq g)jy6ds(urtices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charv g(dsj(q*y u e2)u q336isvkpges?

  Consider point charges of +Q and +4Q, which are separate1onzgin,5q0j 8 /r xdssger7 :d by 3.0 m. At what point, on a rsz1:7g rdj/no05ixns,8eq g 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 zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Where onld ;-+j:c 1gfv k+f cczhr1rw( the x-axis can v1kd;frh(+ -rc+c wzjfg: 1cl a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q r j 8u7x(ft x;:v5iteom o7zw)is placed at x = 2a. Where can a third positive charge +q btw8j(;xv7ozxr7:t)m i5ou efe placed so that the force on it is zero?

  A copper penny has a mass of 3.0 )-68 qhvt4v byaaw/hog. 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 attracte3; l(f rn.phlfl*3evion of a fixed proton some distance above it. How far(fnl r3p3eeh lvf ;.*l above the electron is the proton?

  Two 0.20-g metal spheres are hung from a c 9vuu (c5hd(s f*z3hecommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic ru9ez c3(hs*5f(d u vhcepulsion 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 the lkhungm (r-0hki vcz /224d;e electric field at a distandev -; /(2zh2cig0 uknkrmlh4ce of 1.0 m from the nucleus?

  What are the magnitude and directione7m4wy/th yxtq kk.y-6 te4)k7 lot +x of the electric field at a distance of 1.50 m from a 504extqt )/6eoym7wt-y 7hy.xk+ k4tlk.0-nC charge?

  A 5.0-C charge is 10 m from a small e93c +frsr- lxtest charge. What is the magnitude of the electric field at the location of the test charx+sclrfr- e39ge?

  A 5.0-C charge is 10 m froixjy 4m.; i2zim a small test charge. What is the direction of the electmii ;2yxj4.zi ric field?

  A 5.0-C charge is 10 m from ajyg2 pjsw7 s m3u;towab8ls 1o; j/w.4 small test charge. What is the magnitude of the force experiencsb.2w ;;w3glatyj 1jspu7w s/j 4m o8oed 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 and arehcfth0sy8p /ge148 n a separated by a distance of 4.0 m. What is the electric fiel4 y8cn/t 1fh gsp0a8hed at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a 1ff3+e az4ipyvt w 5hzcem+)+meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the emw af4zy1 )p+i3ceh 5v +tefz+lectric 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 oa.,tbu0v xl/ tf,b3 ( lwmg7icharge is placed at the 50 cm mark. At what point on a line joining the two charges is the ele(73a0u,.vbx /l,t tg fblwiomctric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed aqn7x5q6s:z)az s vwo1 (:a qhqt x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between thzh7sxqa6n(s wa:q 5o)v 1: qzqem?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Theq 4amqm4vll7*0 fb ju 5(gyzq/w5jrggz ro6/( last corner is occupied by a -3.0 mC charge. Find the electric field at the center o(wl4gqgo*lq u64gb vma/7f5rz/q(jy5jr zm 0f the square.

  Consider a square which is 1.0 m on a side. Charges are placedlp xjf,7ivplx9i;/w0(arw q 4 at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.00wl ;a/p(xw9xj4lfp r q,i i7v mC at (1, 0); -3.0 mC at (0, 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 placeig4ie-9tq1n6o v2fhd d in a uniform electric field. What is the magnitv21itdh- g q9ei4n 6ofude of this electric field?

  A particle with a charge o mov4m52 fq9zwl5) cfof 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 field of 6000 Nz0xwz1 1ox e;g/C pointing downward. What charge must be plac ew1z g0o1xx;zed on the ball for it to be suspended?

  A foam ball of mass 0.k+m vuftl4y6nv5h .0c150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gra.m4nl vh 6+yc tf0u5kvvity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 i hqvn6l( ev)w.x)fg,cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm vihqe )(.vxn,wf 6l)g from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elect .v i,tkbycgw9(1*qoyf8shh( o8kd*x ri f8v(c b wgio*1.9hsxdkk *( ,tq8yohyc field 6.0 cm from the center of the sphere?