State the law of conservataeh :83xfiy pd 237gl(eq4t*0ianffa ion of electric charge.

  Is it possible for two negative charges to attract ean 0 ix19iu.cohch other?

  Is it possible for a positive ans y/q2q5n.v/u-1 mbtg + orvcrd a negative charge to attract each other?

  A glass rod is rubbed with a piez *tq d324rnq(f88s akfe)pnbce of silk. During the process the glass rod acquirebfa kdf)n 8 nr s3qe(*4zp2qt8s a positive charge and the silk

  A proton carries a

  The model of the atom shows af- ys) o2vfz9c

  A neutral atom always hasr-w 2,k9:-gf:wzyx/nmc6 e)obbn jon

  An atom has more electrons than pr5jibt;k hu8s 2otons. The atom is

  Materials in which the electrons are bound very tightly to thg/nz oj qql) /z5u+7kne nuclei are referred to asn//) olg 5nqzj zu7+kq

  Materials in which the electrons are bound very loosely to the nu04e. gz yoqeislo1l, m z3ca;7clei and can move abou1 ,e3e g 7ilqos;zoa. m0yc4lzt freely within the material are referred to as

  A negatively charged rod i/,a* lviuy,mv ed3etntxi83 ot*r yf/jj+ ..qs brought near one end of an uncharged metal bar. The end of the metal bar farthev8niy*x q ,yj3ft/t vote+draljm .,*i3eu/.st from the charged rod will be charged

  Sphere A carries a nzf 2h a;nw4/lzb pe6m7.ay h-iet positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groun46;e7b ayihfzn /pma-.2zwl h ded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positiv3jne 8cdv;w*x ely?

  An originally neutral electroscope is briefly touched with a positively chargesulcchb, p, 17)eya+pd glass r+psbcac, h,71 e)y lupod. The electroscope

  An originally neutral electroscope is grounded brie3x lmqv8s ttye,k)/3*m ,le eefly while a positively charged glass rod is held near it. After the glass rod is removed, ,exl3qese e*y,m3tl8tm kv/ )the electroscope

  A positive object touches a neutrj ,pu-njpq y+( z:f,soal electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?(p:j zqp-ofs,jn,y +u

  A large negatively chgta1mo6*z*y* 0n ga xmarged object 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, yna1 ag6 g txm*z0*m*oand 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 Coulombomyc 1 .l-4e8i1/iyx3krewoc constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge ia6 m-d)nrn2si s larger in magnr 2a sm-nndi)6itude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. Thh6 b) ;pm3ra- kohsc,j3y0hgs ey are placed near each other on an insulated table. Which statement hasg)j03ys6,m 3hr hbkc po- ;best describes the electrostatic force between them?

  Two charged objects attract e/e4px*r bx)*z ( swoav 9 q0aizi5(yffach other with a certain force. If the charges on both objectzoa( r0*v4y ziqiea5 xb fx/)9 p*swf(s are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forr 5a16qh;c yybces of F on e5yy1 a;h bq6crach other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects at2;3t :xoau+59wqey w vk6yhjltract 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 between their centers is reduced to one-fourth its original value? ut yha2 vxw6+lk9:j;yeq ow53The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What hap au3v6h 6coy)kpens to the magnitude of t h6)vkac3o6uyhe 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 happe. o6kphjz t/q2ns to the magnitude z kj/h o6t2qp.of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of o5 rl5,qsil ,ekx2zme +8zv)f7mz) nq1.0 m. What happens to the size of the force on the m qk)5mlxe+7,,nzs2 ife5zql ov z8)r proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the cqfh7ucm5,h6tz p s0 d/enter of a square. When a second point charge of -Q is pl d5,fh07h/zp qscmut6 aced 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 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 -es5o glt)x4m 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 acts on the ce s)4go5lme t-xnter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a mf8w3 el ,iia0ykcva,lon fd1 r/; m.7vector?

  At twice the distance from a po;o,stdv/7 ird4:due n int charge, the strength of the electric field

  Is it possible to have a zero electric fiel:p:br82x5 9a x qfbb( 9io47 tglvdfaed value between a negative and positive charge5x:p r29fe9xl q8gb4oabf ba7tv:i(d along the line joining the two charges?

  Is it possible to have a zero electric field value betwedl -rt*o(e/q1p uk a7t8k/0bbnmt y.xen two positive charges along the line joining thb1qr0 udlt p(o/tn- kke8/y .7*mxbat e two charges?

  Electric field lines near psiti :9yg8md/fjf lve point charges

  The electric field shown*pjwihafe;i(ew0q ; 7 46,g eym2rrw m

  Can electric field lines intersect in free sxj mu2o3y*;h6t)ocyr.i q, adpace?

  A solid block of metal zpyngv ;,;jzt42 2blain electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field i;b4vz t p2alz,;2 ngyjn the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters a4d 6wp lwbx-d;re each given the same charge, the electrd- wwxlb;d 46pic field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woodeyd;h j0 ot)5ofn table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfacht ;food0jy5)e?

  If a conductor is in el:7uxq1. i j 0vkcze+si 3hlnf1ectrostatic equilibrium near an electric charge

  A positive point charge hanv)+:dr wyswp+w yyw/ 3l9,is enclosed in a hollow metallic sphere that is grounded. As c/wynh, al3p d+)svr:9yy +ww wompared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of co 4rrlvju 992kznductors in static equilibrium.

State Gauss's law.

  The charge carried by one ele+n x0*4/7ps ctvqc.b8 toi qyjctron 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 aj 1 (hvc+(),jkcurfea net charge of +2.00 mC. How many more protons than electrons does this piece of afe +1u,jcj( (ch) rvkplastic have?

  What is the charge on 1 kghv6 bmr*m06 8/-psq, y tfv,s3jn gbzorn; u4b of protons?

  An atomic nucleus has a chargxnoob f f693p/e 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;lrude/t7fl lqco2q1le w cc0(r cn 3414lds, cm, have charge values of 2.0 and -4.0 mC, respectively. What isd(l01r n4stclco3e/c2dr47l ql l 1fqwu e,c ; the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, oxx , tos/+xq+and the force between them is 1.0 N.,+t xoq +xso/x What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. n0c 3(ltuj8m3w + zphgHow far apart are they?

  The force between a x5hl )+ipvf -f$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart gj;8n0 bfkhabwoy. :., experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the el 0.jbk:n;yo8fhab w g.ectric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firstp3i081 -cj rvz nwz6aqxs ep-m2-u ru3 charge is at the origin, the second to the right at x = 50 cm, and the third is at thejarm ux-n3r c1-zs30 v- uzp2piqw8 6e 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 .o5qzlgv k;io(t8* qv placed on the x-axis. A charge of +2.0 mC 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 the magnitude and direvvlkgiozq 8ot *5q( ;.ction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions:v ywe;0 yr:w3y Q1 = 2.00 mC at x = 1.00 m; Q2 =30vw ye;ry wy: 3.00 mC at x = 0; Q3 = -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 placedz9em wg6iewj7a9 p.3j at the center of a square, and a second point charge of -Q is placed at the upper-left co9j6pwja3e 9mw.ez 7g irner. 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); 4uf/fm 9u- jqyQ3 = 5.0 nC is at (0, 0)-9uf j/um qfy4. What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0) iyq y3ic0.c63fq qny9; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whnq. 96y3 yf iicqc3qy0at is the direction of the net force on the 5.0 nC charge?

  Three identical charges of3fi ikfmfeq)x9 2h*8h 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 f3)fh2 8h* qx9f kmiifeorce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whichh(:8oo :j5b*cu tp;k )sydh xh are separated by 3.0 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)5ob:j *pohx( ;: tsc khhdyu8 be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Whe7y-h5k/vfch yre on the x-axi-7y5 k/ fhhycvs can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whe7 tzs vha8(xl6re can avz8 s7t(l6 xah third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. j7kc 2:didcq o.1o sy3A 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 attrgbtib;fiisx1 +m3-g9 i9; x wkaction of a fixed proton some distance above it. How far above the i193+iisxi g 9xmt;-k; bbfgwelectron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thr, cylyd.ll;5av /lz1m3gdr0shh) ,yseads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads i l,l0v)rly5ah hg mys/c,l;d.zd3 1s ys $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge on+9m1o3z2yj l upgf1 h:/ rtkuf +40e. What is the magnitude of the electric field at a dis 9ypfjnultm1k/2+ 3zu:ohr1 gtance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a8ei z wwnb52(o distance of 1.50 m ( o2w8z5eniwbfrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Wha;ik2s qe3 p*wzt is the magnitude of the electric field at the location of the test ke p3z*2w;sqi charge?

  A 5.0-C charge is 10 m from a small test chargebb5qxr dqytf;6,e *0 n. What is the direction of the electric fielr;6x0eb*tdnbqqf5y , d?

  A 5.0-C charge is 10 m from a smnmqj o/.sn (oa*id8g8(sz4q)(lmf a t all test charge. What is the magnitude of the force experienced by a 1.0 nC chargeia q ns)g. om8qf/(* tdos8(4zamnj(l placed at the location of the test charge?

  Two point charges each have a value of 3.0 C af 8l/n-gikahl0,t.ygho -xz0nd are separated by a distance of 4.0 m. What ii-on k-y8 h xf.azgght0/0l,ls the 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 stick and a -4.0 mC cha j;oc4d7j.uv brge is placed at the 50 cjcd 4vu bj7;.om mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark ofodux n/; fs hqw d/(my2b;c-e.et9yj* a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joinidy e/uejon-9 ;sm ;ty 2f.*bcdqx/(whng the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0p wa ljn8l+:mva4+yr 5 mC are placed at x = 0 and x = 0.20 m. Whwarl jlv8+4am:5n+ py at is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of si o6knzb5(8bhxde 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the eohx 6bzk8n b(5lectric field at the center of the square.

  Consider a square which ij6-ljdy4 uqt0 s 1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC4 tu dyj-ql60j 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 center?

  A force of 10 N acts on a charge of 5. .6zdx,g)2puqd39p nkydh gj40 mC when it is placed in a uniform electric field. What is the magnitude of this electric fieldjn2g .hkp gy3uq94pd,d) 6dz x?

  A particle with a charge of 4.0 mC has a mass oql d f ixs3q/jv/fk.,6f $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of x7cd+ -m7frgh k)wrw4h) mhfk7 e95pumass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What chargfg hc7 9)hmeuk-x+ wwrf)rd7h4m7p5k e must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carrie1t( sg5jddxs 3sg19lps a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity.sl gp(t 91dj531s sgxd 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 magnitl 13/ ucjpnn2dude of the electric f13cj/ ud 2nlnpield 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 t**fbk pzjgwg9 (8pdq+he electric field 6.0 cm(fpdz*k jg*qg+ 8wp9b from the center of the sphere?