State the law of conservatiojzp+pek(8kz 5n of electric charge.

  Is it possible for two negative charges xzhf;ef8x ku6 p75a *jto attract each other?

  Is it possible for a positive and a negative charge to attr cuso)(j*x,g /cawn+mact each other?

  A glass rod is rubbed with a piece of silk. During the process i er0m1z935lw :ytwjdthe glass rod acquires a positive charge and 1e9dmr03li jtw wy5z :the silk

  A proton carries a

  The model of the atom show gyc)d*3vmrnz66ie pc1mm0 yi*u)1w gs a

  A neutral atom always hasr5 2ate:q6 s lbg3-tqp

  An atom has more electrons than protons. The dvx091 zghaw ks9a0 d v9ez-f ;wjck;*atom is

  Materials in which the electrons are km rxuu f ku8k8ulmk;8:65ll 92usdx5bound very tightly to the nuclei are referred to 9u8flxuk58uxsm 8l dmu k :2k6k;u5rlas

  Materials in which the ele+(xh* nc1u c/m8we ulcctrons are bound very loosely to the nuclei and can move about freely within t8 u c*1eml +wnh/u(cxche material are referred to as

  A negatively charged rod is brought near onev3cd w0un xze+-6 u:pyc,l8lk end of an uncharged metal bar. The end of the metal bar 6n:d0 u+w8uvceklcyl z-x p,3 farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B i5:,2rs fxf4ue7f b4awn bte3 is neutral. They are placed near each other on an insulated table. Sphere B i4sb:br 4e ta5ewf7xf uf 3i,2ns briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivel0.fpbtz9n t y9y?

  An originally neutral electroscope iso6jy db pd:r 0kjz42q; briefly touched with a positively charged glass rod. The elect60; q4 bjjdy op:2dkzrroscope

  An originally neutral electroscope is grounded briefly v* zo t;yel2k(05ni9gb2q gujc.5je rwhile a positively charged glass rod is held near it. Aftere.ge 2t2r ulb*kj0 ;9qiogyn (vc55 zj the glass rod is removed, the electroscope

  A positive object touchee9v5kv)m1,t i)si d)ai xddz+s a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, dv ekz1i+ m x)it,didv s95)a)but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tu g jh:v/ed.4z7dfod-able. 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,o4dz7 hu . f:ejdv-/dg 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 o y9jcsp:.8 e wswr4,2:jx7- rgn1pqv 7bdhlvxf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance1 vyh xjds9 yald)un:9 )y+e.m d. The first charge is larger in magnit)jym) 9l9s:n e+xaduv y1dh.yude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They accd-nwv 8x/w z)4ul,y re placed near each other on an insulnl-c4 ),xvuwy c8wdz/ated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If g(1i2m ha-kewor jd us;7-nh-the charges on both objects ak 21n e7owuig;hj(sr-dmah --re doubled with no change in separation, the force between them

  Two charges are separated by a distance d andx1bg41tiwryu2v /) bt exert mutual attractive forces of F on each other. If the chab12/yrb wtu)ixg41 vtrges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract,3pofiqx 1w h60j1dby 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 originali,30bw 1fojy d hqp6x1 value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. Wh cdwvb6/a/;1 pa oz0cvat happens to the magnitude of the force on the proton if a second electron is pladc/a vv pz 6woa0c/1;bced next to the first electron?

  An electron and a proton are separated by a distance oftk4 )6 iisdngs 9(amk* 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed nean)dk t*s k4ms(6ii 9gxt to the proton?

  An electron and a proton are separated by7qtj 2uh6,dfz qm37y dud v4-u a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50yd mf,u3- 4jdvqtu27z 7qd6 uh m closer to the proton?

  A point charge of +Q is placed at the center of 3mg+-8lg4 mu: uutkicd 0 w;apa 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 electrostatic force acting on the positive charge at the+ m:-0uglit34 g muuwk; pacd8 center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. pbm w)* f8jvc)y0awo(9k0v66suv x u0 r sij*m 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 * *v mrsj 6jv 0wuips8(kavo90w0y)fmu)6bc xof +Q placed at one of the other vertices?

  Which of the following is not a vector?6zv7f5hv uzd.

  At twice the distance from a point charge, the strength of the electricqc3nhxq*f3 6com(: lc4et dm( field

  Is it possible to have a zero electric field value between a negative/d2p/t dz8 7waumrk .ey5t y4r and positive charge along the line joinina/kz5ypt4/ e 7d8turmwyd2 .rg the two charges?

  Is it possible to have a 205 a4pmqwr*sit1hlks/m l m3zero electric field value between two positive charges along the line joining tm/lm1il 5ms 3w4qk20 s*r aphthe two charges?

  Electric field lines near psitive pol x0 32smze n4s3vpt zo5s4-e6oi)fjsint charges

  The electric field svapxskj .tc*: 2 hq 0h0d2+hi:k)ziit hown

  Can electric field lines intersect in free space?c t3l97 rz 4/dxq0ubte

  A solid block of metal in electrostatic 3j:* q o+wuime3bxjc4 equilibrium is placed in a uniform electric field. Gbie4:jjm3* uo 3xqwc+ ive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metadf+;gaf:j e; rb yvu:0l sphere of equal diameters are each given the same charge, the electric field (E) midway betwee+;: urfj0dbv :e fagy;n the center and the surface is

  A cubic block of aluminum restshx l3i67p k,vk on a wooden table in a region where a uniform electric field is dirx,ilk6 v3 p7khected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium:j+ dou b-fk;spb.3pg near an electric charge

  A positive point charge is enclosed in a hollow metallic sphe 2c55i2;w qvdnre5nem psiy1z,uh3:b re that is grounded. As compared to the case without td c;z5 ie hy ,i2up352rbsn :n5e1wqmvhe hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equi;t7 mqcl2sr1dlibrium.

State Gauss's law.

  The charge carried by one electron lt p7)9 /o: i yxb0cyaoevzek7)(o8ky 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 c7fc (1k i 3tc/zavh)bjdwg +y9harge of +2.00 mC. How many more protons than electrons does this piece of plastic hjgkdhy9fi cw7 3b) +c1azt(v /ave?

  What is the charge on 1 krfjy 2s37m kk2,o uhw:g of protons?

  An atomic nucleus has a charge +xt(j vzuxw 7c+z-jo2of $+40e$. 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 -4.0 8a8 ar o(m9/ 8hfghlbpmC, respectively. What is the magnitude of the electric fob/raf8(p h mla8o8hg9rce between them?

  A 1.0-C charge is 15 m.cs b* .thx-jk from a second charge, and the force between them is 1.0 N. What ik.bjx-c . hst*s the magnitude of the second charge?

  Two 1.0-C charges hav d2rec.ub;-4vmmyu7rqrpt96( q4 fp ye a force between them of 1.0 N. How far apart are they?

  The force between a gl d vw.6/swt ,hja.-v$30 \; mC$ 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 fkn66-a 7xn rw1.0-N force. If they are moved to a new separation ofaxwnf n66kr-7 8.0 cm, what is the electric force between them?

  Three identical point charges of 2vcb898 rz 1rinau1 v2f.0 mC 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 ub vf1rvaz 29c8inr18is 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 chargbrsj8 ni0i :a2xolt,d9xwo9 ,e of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC a82 xnw ,bj 9t0aoi9d:lsi,rxot 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 located at the following positions: y(zci4uf;d6ivb ; h5aQ1 = 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 theaih5d f cyib6;vz4;(u magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the centefd*) *fainv xw17dqu:r 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 dd7 1u ni *fawf:)*vxqcharge 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)g9k . sud:4bdl; Q3 = 5.0 nC is at4g:uk s .dlbd9 (0, 0). 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 isd(cd0a:6jps /x d+he i at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directionj+ 0dsc/de(6i: dax ph of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an 6fsqdc;.;bhddo v -i7equilateral triangle which measures 30 cm on a side. What is the magnitudef.b;7 q hdd;o idcv6-s of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by y npd,npgul b+ urj)q0(77. lz3.0 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 be z0 (q)bu,7npj.lryupl gnd+7 zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at bf:b3*ssf2 evx b e0(xog/;myxh)8xc x = 4.0 m. Where on the x-a/ (hvb0o 8xymgxe*xeb 2;fs)c :bf3sxxis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the o) pvmxi);;lnz, le* luy *7tgt lcz+7hrigin and charge -q is placed at x = 2a. Where can a third positive chgnzv ) +lthulp l )7yitec;zx **;lm7,arge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. h01 yohzfj7czvdz)8 jd0)zw6qt+ij8 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 gm460/r uv3b /ty9tr-aud57 sjpnghpk 1wjn1 against the force of gravity by the attraction of a fixed proton some distance above it. How far above the ele k/tguajjp 70 vwb5td-pu34m 6/nrr9hy1nsg 1ctron is the proton?

  Two 0.20-g metal spheres are hung from a c.*icw)a3gz l2 ;qfqx-7ym xwtommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion )ymc - wz*tq2x3qx.; 7iflwag 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 now2w h/mu-wqx e w))k5wz1e9is the magnitude of the electric field at a /wq-)mozen2u9w e)w5 w1xwhkdistance of 1.0 m from the nucleus?

  What are the magnitude and direction of the ele-rg*ib bo mb te*er5.,ctric field at a distance of 1.50 m from a 50.0-nC charreo-*m,e b *5ritb.b gge?

  A 5.0-C charge is 10 m from a small c-jc0q ba)r,tnh5 0vdtest charge. What is the magnitude of the electric field at the location of the test c bq)tj5ad rc0- n,cv0hharge?

  A 5.0-C charge is 10 m from a small test charge. What is the ui8wy 7jrg-ewi* 3s1e2l12xlzs2 f oedirection of the es 1se 7w2ywzgl f 3xue12irl2i*8eo- jlectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of k c,b)tghfq)d hcml0 (6vg92b the force experienced by a 1.0 nC charge placed at the location of the test chggc,2dhv0lfqc(mb th)9 kb6) arge?

  Two point charges each have a 1ie2c tz*7jx 8c t,pzvrp(:mfn: vzh0value 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 ctx jcp,npi(: zervzf:71v8 2 mt*0h czharges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter s-p vvxk)4q cbju5-.u rtick and a -4.0 mC charge is placed at thvvq.jupu -rc -bk5x)4e 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mlu f2wnif dm14i5gsnv 54m9/iark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what poind/n1 mm5l45i9fv2 i wu 4fgnsit on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7. hids.e-lwb-7jb5 ll 10 mC are placed at x = 0 and x = 0.20 m. What ib.b- ej5dwih 1- 7llsls 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 side 0.50 b*nnc3v or/r5;du.+ozfbx+jh fg3 t +m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of trdo *b+tfuonr+g+f bjc3;xnz5 h/v3.he square.

  Consider a square which is 1.0 m on a sid5alo7q p8khnr51d1z00azjt l e. Charges 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, 08a11 z5 t5koh 7pla0jn r0zldq); -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 f hku,js;36na on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitudesfnkj;ah u6 ,3 of this electric field?

  A particle with a charge of 4.0 mhd 5c(j3 slqy-8xg ok,C 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 ej3ydy( i )ohzi9- f2wylectric field of 6000 N/C pointinzd9jyihy-yowfi2 )3( g downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a cha 4g*rf kkc8.qtrge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force g.* kf8kcr4tq of gravity. 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+ b cdz(rx/nvfu as;h:qmj80 420w imi is the magnitude of the electri+zh2dj0 n 8(4scfwi/ xb: mivq0ra;um c field 5.0 cm from the sphere's surface?

  A metal sphere of rad)gqmef w: o 8g4c)b;vvius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm frcv4 mqvgw)) ;:oge8f bom the center of the sphere?