State the law of conse:-*eshcbqo2 :ypa n05qe 3rtnrvation of electric charge.

  Is it possible for two negative charges to atx sv(sqdrb3)i)9/ jgi tract each other?

  Is it possible for a positive and a negative charge to attract eac mcz+v 5ax5e6fq1 dof,h other?

  A glass rod is rubbed with a piece oxd3 vj ium d.2:arqs,6f silk. During the process the glass rod acquires a positxsija2 dq6, m 3ruv:d.ive charge and the silk

  A proton carries a

  The model of the atom s3z5iip f9p0,jr/ph y mt83mmx*zu;f c hows a

  A neutral atom always hu.6,fd)ltd 1gd+su atv : mxt:as

  An atom has more electrons than protons. )p6d66qxd4 )yemdli/9gf ytoxyx0b)The atom is

  Materials in which the electrons are bound very tightly to the nuclei a h8n:b-1p zvjjre referred tojpz:8jb h v-1n as

  Materials in which thxjyzakkb 1z.f1p :b++ aoz5 y+e electrons are bound very loosely to the nuclei and can move about freely within the material are referredfa+px11bbzoy5.kz ajz: +yk+ to as

  A negatively charged rod is brought near one end of an unchargbtg7dt6 (ekuc:vc6f/ed metal bar. The end of the metal bar farthest fr6:t6g(bdf te/ 7cuck vom the charged rod will be charged

  Sphere A carries a net positive charge, and s0fur 0l3,hl2 dj *bjdrphere B is neutral. They are placed near each other on an insulated table. Spdl0*l0f r2dj3,jbhu rhere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chargec e8ty d6eb 3i(bgd+zi)y(q*jd rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivelyr uphr.1c;;bcr2yt avgm92 ;v charged glass rod. v9 gt.2cmbray;p; u1 2crhvr; The electroscope

  An originally neutral electroscope is grounded briefly while a positively charget n h,rkmj+cm2 )h*ln ghq89*ud glass rod is held near it. After the glass rod is removed, the electros qn2*rn mh9)hg 8lh+uj*mtk ,ccope

  A positive object touches a neutral electroscope, and the leaves separate. z,iny 4(unwi f1(sp *be:ra 5n Then a negative object is brought near the electroscope, but does not touch it. What happens to the n(fy (51:b4wn r,paz u eiin*sleaves?

  A large negatively charged object2ey 81hrpv y+ sk*k7ew7 kbmg- 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 s178*+e-2phg b ykvwser7 k myktops. 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 Coulomb con9oc q,fkn31 iustant $k$, which appears in Coulomb's law?

  Two charged objects are s54vfz 5gxzx aft72yr;sw 0a6heparated by a distance d. The first charge is larger in magnitude than the second charg5xfxv7;gaya6 t wz5 z04h sf2re.

  Sphere A carries a net charge and sphere B is neui(o5:9zi*n*tfik lxe tral. They are placed near each other on an insul:i tixnl9i(zk *e5 f*oated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each oth vqb7me0kdzh,kg521 ser with a certain force. If the charges on both objects are doubled with no change in sepkg z,bq2kse 71m 5vdh0aration, the force between them

  Two charges are separated 8 .jpwnf qe/d2by a distance d and exert mutual attractive forces of F on each other. If the charges are separaf /n.epdj8q2 wted by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a f;w, w19(uloym4fa tmcorce F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance bmw 4ymal,wt oc(91u;fetween their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distan k10/lpuk or ou)/on3q b(p9 e5nequ.sce of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the firstpu5p 3e(ukl1oo0r/ e n sbkonq./) u9q electron?

  An electron and a proton are separatu(hdx)q oo/t+ j*ei1ued by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron uqo u(heij/*xd+ot ) 1is placed next to the proton?

  An electron and a proton are separated by a distance of 1.)a;wvm s wayt2 4poxo*(q39bh0 m. What happens to the size of the force on the proton if the electron ipayhq4xa3 o o)*b;s9 2v wm(tws moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of 1(7n 5 tt+hb9 x8bqc7gdwuuxmkay6 k6a 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 po hbxbymx87 65wutuagnq6 9(t+d1k c7ksitive 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 centroih1p) shrlyt91 d 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 itl)y p1rhs91h s 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 :cs ngyjd- (l.a vector?

  At twice the distance from a point charge, the strength of the elec e2t.tvgf7-5ytd)y 9m9 lmczz tric field

  Is it possible to have a zero electric field value between a negative and posiki p99nqgz6k87z c7i etive charge along the line joining the twkcn77p6899 zz kieqigo charges?

  Is it possible to have a zero electric field value between i *j 0vv1cu2tzs:zn):l4 w oyw1s8vvmtwo positive charges along the line joining the two c)2tv isj*yvzw1vomsw4: lu vzn08:c 1harges?

  Electric field lines near psitive point chargen;)pavv s 76ows

  The electric field shoqs9mxu6 +v+ m t0n+0nciuas .twn

  Can electric field line6y*,fo5cli 5u a,eqic s intersect in free space?

  A solid block of metal in elecx/lcassra7 q(f 1w ):-dexjf 9trostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electrf1d9cf-:jx(lx/q ew s )7saa ric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere*ku :u q 0ln)kw+ecj, cp-tcz9 of equal diameters are each given the same chaucj9 -kuwzn,e) qc+0 tk*l :pcrge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden t9w 5y)5elhp4zio)u rsable in a region where a uniform electric field is directed straight upward. What can be said concezi eh5y5)w u9 rpl4)sorning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chaar,j2-f jeh:vw+ a9srrge

  A positive point charge is vv0/a:ov rw*ex47kawenclosed 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 hollvwa4ea o:*vk70r/xw vow sphere has

State three properties of conductors in static equili 6r pk:0.jbmn1t9w lhw7ebbqgq 96:q jbrium.

State Gauss's law.

  The charge carried by one electron ish/;-k2:i znq7 kgbufj $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge ondj13 cj-i*rof +2.00 mC. How many more protons than electrons does this r*-ojcn jd31i piece of plastic have?

  What is the charge on 1 kg of protond6r j;lhll/r0:p a(dsx6 ( kgts?

  An atomic nucleus has a ch dsxlpe*h*+c((,j lfg arge 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 values of 2.0 and -4kvs 8(0wr+ 3j;tepbie zn7 mcuyy32o 8.0 mC, respectively. Wpeu y8;e(ok sz3mibry cn2t08j7 w+ v3hat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a sec1z.9 1gu 7aktbytb*2w w cdl1wond charge, and the force between them is 1.0 N. What is the magnitudacubk 2 t11g1wty7 d.9*wblwze of the second charge?

  Two 1.0-C charges have a force between tpfxa6hhi uq)7yx :c fy04o;8 dhem of 1.0 N. How far apart are they?

  The force between a t: r(p a)qv wseygi29dp8b 5r6$30 \; mC$ 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 force. If fpxqx.: disy3 ir7bt/zdn8g2g3o5/f they are moved to a new separation of 8.0 cm, what isfx/5pi2giz sb3 r /nq7y.d3ofxd:8tg the electric force between them?

  Three identical point charges of 2.0 mC are placed on t od/un91g kt9f+rn6kv he x-axis. The first charge is at the origin, the seconvuro96n dt 9+k1g n/fkd 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 at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is place4,rx lm 87 ymcj,x1ztvd 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 direction of the electrostatic force wh l1j4mx z8,x7v,r ytmcich acts on the charge at the origin?

  Three point charges are located at ty1c(o2/t x :lk2nwctu rkk(z2he 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 magnin:zy /22t1ocw2k t(luxckr k(tude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a sqi eb+c :k6k7gg:tjs/ cpv u64 4;ayjld;7nbfnuare, 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 o;nf+7yn /iglk :;ge44js:ubj kvcb7p ac6d6tn 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 3woub+79rp6 a ,jhbqf m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the n9hqb,a3+ o6j7wpf ubr et force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 78gdnn+lq8wi 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net f+dl n87inq8gworce on the 5.0 nC charge?

  Three identical charges of 39jn2yo7yb6h m.0 mC are placed at the vertices of an equilateral triangle which mbm 679 hyjn2oyeasures 30 cm on 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 xb4 iwue-q;s4nl*o; e 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 itsb;e*u4xneq4w -;oi l would be zero?

  A +3.0-C charge is at the origin and a +9.0-C cha as /l+absed/k*e*v2 prge is at x = 4.0 m. Where on the x-axis can a/2*dpe+ *kae/ basv sl third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and cz b0tt opq9hq .oszw+ 9;riz5,harge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the fo,q9bp+ zqhrzzo0w; .t 9is5torce on it is zero?

  A copper penny has a mass of 3.0 g. A tpwr j vv3i-wzgc , 3v zp421,:(u o;rfc0xpwdgotal 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 awmp 0bek;:/vg)nf 7qq gainst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is 0pq:fmv)wqb 7/gek; nthe proton?

  Two 0.20-g metal spheres are d d+b*hrsol(4ib-r j vauh+42hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle b2s( d lr+r4ah*j4 h d-ou+bvbietween the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has *cvqem5 vjo p1(9rc.s a charge of +40e. What is the magnitude of the electric field at a distancqjpc5evrv .(s9o*c m1e of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field ao, xn03*s3atwri f9tjk 11oy st a distance of 1.50 m from a 50.0- rt y1xnjt, oiko3*a193swf0snC charge?

  A 5.0-C charge is 10 m from a small test cha3. cfsucl 6y3z :rh6sprge. What is the magnitude of the electric field at the . uz3 lr:p6hsf3ysc6clocation of the test charge?

  A 5.0-C charge is 10 m from a small tlh,gpu* p g1+wuc0;pb est charge. What is the direction of the eleu ulg1c+gwb,;h* pp0p ctric field?

  A 5.0-C charge is 10 m from a small test charge. Whb zsm56st e)p(rjc+ 7nat is the magnitude of the force experienced by a 1.0 nC chargst5 jzn+b76e)mc p(s re placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are .7stntynhy42 kb3 1 cqseparated by a distance of 4.0 m. What is the electric fiel. ht7ns4yy nqckbt3 12d at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark o8pfdjhvu o 1/4f a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 3fd 8u41/hjv op0 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark o /woyhek n-q*)4hs sueu9/ m7ncb3fi2f a meter stick and a -4.0 mC charge is placed at the 50 cm mark. hnny qh- sb29ow )*u/c/ me keifs43u7 At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC adtr/-tcy8 u 9y,m:xelre placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point mid:- edryu m,t y8/tcx9lway between them?

  Three 3.0 mC charges c3axfy62ys 1g)1 kk/)wonvwz are at the three corners of a square of side 0.50 m. The last corner is occupy3)12woc kaynk1/sw6gzf)x v ied 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. Charges are placed-:a jgtdrqfh+k 1+ys ; ic+cn1 at the corners of the square as follows: +4;y+kqnsj iacfg: 1rhdc 1+-+ t.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 center?

  A force of 10 N acts on a cf: vp0xt jd8)sb8 oe)zgpk10g harge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric 08j):xsb 08f)1 otkvpzd eggpfield?

  A particle with a chanj )gh52t hfp6rge 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 pld(muike.8 u7 mrc r:qim+i4w5aced in an electric field of 6000 N/C pointing downward.7i ir (u5i +:.e8umdcrkmmq4 w What charge 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. id 0i+8w-3xqzym 8oid The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and3-idm+do0 i88q iyxwz direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the mzcr z9w5dp ;s3agnitu drz3 5w9s;pczde of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. 0 cd;eq*6zlzk o3ff634kk9g anvf.c fWhat is the electrifcz od ngkv6f90*3cez;k.k aqf4 3l6fc field 6.0 cm from the center of the sphere?