State the law of conservation of 2x9pxc z5h7yycn+i hbv2ki8c d ki+,.electric charge.

  Is it possible for two negative charges to attractc5 hrr8kw-17lp9d vyu,c2xgc each other?

  Is it possible for a positive and a ne 3yy.s ovij6i-gative charge to attract each other?

  A glass rod is rubbed with a piece o,kfvua*mnyiho m.4 0z, 4*tepf silk. During the process the glass rod acquires a positive charge andm 0yf u,pm.*vha*4o i4tkz,ne the silk

  A proton carries a

  The model of the atom q*vhg /ygy a.4shows a

  A neutral atom always has vu5hp 4tuzz1h2ny 1+v

  An atom has more electronk ijfr..ygmh0z+ 0zw :s than protons. The atom is

  Materials in which the electrons are bound very tightly to the nucl ko:6wk fr)s7 i-9;qjj4yyfzfei are referred to af fz; q)ijj-9yfwy7 :s4rko6 ks

  Materials in which the electrons are boxopnf4y r*r 3h d 72pz1)8eulgund very loosely to the nuclei and can move about freely within tlh g8p n2ouy)7p*rzef43 x1rdhe material are referred to as

  A negatively charged roz;0fx:w 8(8dzrct rh) oy8 *tqoj1( uk*rp srhd is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chargeduf;(st( )x8rjwtr z yo*rroz:18h0p q8*kchd

  Sphere A carries a net positive cha; xx/a5 mxhulj:b3lr;rge, 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 grounded. Which sta;xh3/:jbr5a;xuml xl tement is correct?

  How can a negatively chargjl8-qes/ r.jaed rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chargediw 0phql :z/0h/ tfz,wre gr/l- mm6)bv0p mo; glass rod.me rrwzm6o/)//:pp;w- 0lh 0 ht, m0q zgblfiv The electroscope

  An originally neutral electroscope is grounded briefly while a positively cha3/26lb h rxylhrged glass rod is held near ibrh/3 xl62hly t. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroxyt)5mk6+ uanl rh+. jscope, and the leaves separate. Then a negative objecxyj6l t.ru+hk+m5a n)t is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is .ya * razg.j1xplaced on an insulated table. A neutral metallic ball rolls straight toward the object, but s*.gza 1xar.jytops 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 object. What is the final charge on each ball?

  Charge is

  What are the units of the Co1g azn,,fex 88sf2 ybzulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are sep 6 m*6xr6c7s gran 8;dq1g2w-)0bdjlkrcqlnj arated by a distance d. The first charge is larger in magnitude than the secol0nc2 nl r*c666gjq arbm sj;-d1dxk)7w g8q rnd charge.

  Sphere A carries a net charge and sphere B is neutrala3e7vmifl / f2vy *k*v. They are placed near each othervkl*f m2e3v7v ia*yf/ on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a ce,5g3z j 1rblaqyo0br 7jw1cg 2rtain force. If the charges on both oa2qb51wj7r gybr ,zog31jcl0 bjects are doubled with no change in separation, the force between them

  Two charges are separated by a v2p4alxmw pvx.4,8/ -h8gmnpmcy8m g distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distan8m88p h/ 2p.4xv -xvw4lnm,g apymc gmce of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to tyd8 4t)1s shenhe force between them if one charge is doubled, the othey 14ts 8)sdnher 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 prptr.j9 qr3;8 (hiwzrsla,)w joton are separated by a distance of 1.0 m. What happens to the magnitude of the force on t hr 93j)wa;qr,p.l8z js(rw ithe proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distanci: q 6tvboq*q aev2v19e of 1.0 m. What happens to the magnitude of the force on the first e1 vv92 oqe*6 tqa:qvbilectron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happenozfb uh0149ko 0jrz ;jfr,9o ks to the size of the force on the proton if the electron is moved 0.50 m closer to 1ko 90b ufhjrz04f;rjo9,ko z the proton?

  A point charge of +Q is placed at the center of a square. When a second poiv-f (vozd:v 1nnt 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 a ozvfd-(vvn: 1re 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 equilateoe5 a2h9c4(j; z (q mfhrw4xnyral 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 center charge due to a third charge 42fc;xq (e hy5om9jz(nawh 4rof +Q placed at one of the other vertices?

  Which of the following is not a vect0ac3n ej vgzz 0+u wyxi,7+bg)or?

  At twice the distance from a point charge, the strength of the electric fi c5j1e b;xow7w0 sqq0peld

  Is it possible to have a zero electric field value between af .-qv28+cly9o t(lf sx1greu )h3ekn negative and positive charge along the line joining the two chargn2(fq.hcvut kx)3o+8l-e fy sr eg9l1es?

  Is it possible to have a zero electric field value between two poirj,;e cbs1,asitive charges along the line joining the two chae,r,sa j;i1bcrges?

  Electric field lines near psitive point chargnppg18(h fh.9v pv7m2yn j pe7es

  The electric field shown l ;5ifto0g+nd

  Can electric field lineotc f1y7 ja07d rg sju4jr8dr0*vd3r9s intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniforgu p;z 225tsw(+fb6mh r ta8bpm electricwptz62(m 8rh+aus 2pfb ; gt5b field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a holloss8*9i s 4d3kcrzqa5st : w*r*(eybdkw metal sphere of equal diameters are each given the same charge, the electric field (E) midway between tdrw4(q8 5esi9dk*t:3z*skas ybs cr *he center and the surface is

  A cubic block of aluminum rests.fkh;k 6n,iu p on a wooden table in a region where a uniform electric field is directed straight upward. What ca kk;6u,pni.f hn be said concerning the charge on the block's top surface?

  If a conductor is in electrosta/ .(phdpevn2atic equilibrium near an electric charge

  A positive point charge is enclosed/fpo+(qvo olf3c xvn93x6gu 5 in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sph g33u( oc/+5lvfn qxv p9ofxo6ere has

State three properties of conductors txelcb ,v v 934wh8- h4:hnqouin static equilibrium.

State Gauss's law.

  The charge carried by one electod,vqd) xj4-uaqro (5 x0l5gxron 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 charge of it ;8h+/b*l6qhz ctnb+2.00 mC. How many more protons than electb/ q l+hcb6;tniz8th*rons does this piece of plastic have?

  What is the charge on 1 kg of prolll+)k0y twx 49 /lnlztons?

  An atomic nucleus has a charge ow .q9lq4c9jgfz* x2bx qz)i+xf $+40e$. 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 valuf qwm5+ b w0vc)u 4ph*dxg-qx3es of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forcxq 5mfq 4bwuh-w*dv+)c0p3x ge between them?

  A 1.0-C charge is 15 m from a second ig6iq vivz 6((jikydxo5hul3l +c6 :)charge, and the force between them is 1.0 N. What is the magnitude of the second charge?6:c6ojg+i l6z5 ()dqvu3l(h iy i kxvi

  Two 1.0-C charges have a force between them of 1.0 N. How far apart1rk/p/ oiaarrig z++lr+93dscv*t c c,m64h q are they?

  The force between a x4mg 6 4;elu0dxwl( me$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N for63cxk/l hlsr-ce. If they are moved to a new separation of 8.0 cm, what is- 6 cll3rxh/sk the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. eh4d;)skbca797ie l 61a rnq- 1pf wn6vrnw x8The first charge is at the origin, the second to the right at x = 50 cm, and the thip9 1 csdn;ew4n1af -eb7w7nh 6)6aqli v8krxrrd 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-axis. A charge ofdodjv27, q )aqw1sz/p +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 1p/s qo1a)v2jqdzw d,700 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are yuu-qc y 9/5azlocated 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 is the magnitude of the force on the 3yuau- 59z/qc y.00-mC charge?

  A point charge of +Q is pluw 15fe w5 x.c(qqlnf:r/ij6gaced 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 2.0 N acts on the positive charge at the center. Whatx1w5lqen6f .urigc/ w :(f5qj 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, 0.1ku sb f*w.0dy;0 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0.fdb; kysu*w0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0dy z79db cld8:); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC chb9 lc:dy8 dzd7arge?

  Three identical charges of 3.0 mC, un- apsu 6-gn.e*rlz are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which.p nel ,uun-ar* g-sz6 acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3nm0:7f to x r5djw9qp:.0 m. At what point, on a line between the two charges, would it be possi o9w:np :j0tfx7rqm d5ble to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at -)qr t hg8fbsk8r 8+ 1krwwlf)the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third chargkgf )rr+ q8twl)sbh8-1f w8 rke be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q isc 8 yudx)x1kp- placed at x = 2a. Where can a thirc-1)xy p kdux8d positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 6je0ljl 9w9wc g. 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 8vl/00uvwevya 2y*eo8jgsx8 iad;2 l the force of gravity by the attraction of a fixed proton some distance abovevyi ;j o/v20y0* el8edsvl x88 gwuaa2 it. How far above the electron is the proton?

  Two 0.20-g metal spheres are ko (ycr;/z,m9gyzq7n ;*u zlvhung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them ap ;zzm*7(lykgyunvr, cz qo9 /;art 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 dgk ;yx /v3*vjy:5*w1zyroi)uo/ g*c c, qsukof the electric field a;3k c ,dk zqys) 5ox/j/gvog:uy1*cyv**u iwrt a distance of 1.0 m from the nucleus?

  What are the magnitude and zs1 /s z7(bzyzr/kpq/direction of the electric field at a distance of 1.50 m fro//zz1sqz/7z bspr (kym a 50.0-nC charge?

  A 5.0-C charge is 10 ,d(yfoe xz/cji; .qu 1m from a small test charge. What is the magnitude of the electric fieyd i;j e1(u.fo,x/cqzld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Wha7 pi1mma5pgay9 + m6yot is the direction of the elecip+y gpm oa9am m617y5tric field?

  A 5.0-C charge is 10 m from a small test charge. What isa f2-+ii-w fxf/y 8e8jqkjdi, the magnitude of the f fe j-aw8,f2i-k d +if8ijxqy/orce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges eac8w 0z nyb d6,7ku)sovph have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midwas v07d)w,6 upno8bz kyy between the two charges?

  A 5.0-mC charge is placed at the 0 cm ma-2p vh rk5n7zyrk of a meter stick and a -4.0 mC charge is placed at theykv-z 2n5rhp 7 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 an s xm6nbn55a8 meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is 658 xs5nman bnthe electric field zero?

  Two point charges of +3.0 mC and -7.u4/x e5s mw3cu0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of thwx 5/uuce 4m3se electric field at the point midway between them?

  Three 3.0 mC charges are at the 0ht0e6tq9 k,,vfazk 0m6hpm qthree corners of a square of side 0.50 m. The las tm ,mka09e0q6h0 v6 f,zhpktqt corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Cheifgd -v0-*g0gnjux /koy2s0 arges 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 *jki/0df2 uvsgenogy0-- 0 gx at the square's center?

  A force of 10 N acts on a charge of f)4rbggxz6l;/-z sdn 5.0 mC when it is placed in a uniform electric field. Wz)6 gn/ fx bl;4gd-szrhat is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass ( .23gp:agpng2ub kksof $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120hi+ q-zgea/4h g is placed in an electric field of 6000 N/C pointing downward. What charge must be placi- h4a/ze qh+ged 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 placed zyw k4hv38xlf729xbvinside a uniform electric field, and is suspended against the force of gravity. What are the magnitudevbyxzxw 824f kh97l 3v and direction of the electric field?

  A metal sphere of radius 10 cm carries a char3 5,tga 00gypap- fzzvge of +2.0 mC. What is the magnitude of the electr-z,0p0a3 gy5 gapvz tfic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a cf je(i bg h:l+2ul8.vkharge of 3.0 mC. What is the electric field 6.0 cm from the center ihfb+:8 ku .g(e2lljv of the sphere?