State the law of conservam q-8kw acb+le ulo0* yf0:e7qtion of electric charge.

  Is it possible for two negative charges to attu65ep/, n6fg8erhv l xract each other?

  Is it possible for a positive and a negative charge htc04ho(xm*xigx s.+0t hf a6 to attract each other?

  A glass rod is rubbed with a piece of silk. Duringpuu d lpkvaq 7d16g);0e63kdt the process the glass rod acquires a positive char6g0 k pp)76a31qe;ddk udultvge and the silk

  A proton carries a

  The model of the atom shov 53bown/3itsgrpd(d51fz90 d 5 intdws a

  A neutral atom always vkc7n5jxp3w ri,4jt)has

  An atom has more elel5ava / 6ea7ll8 em3am;dhibv (*v xr.ctrons than protons. The atom is

  Materials in which the electrons are bound4a vi:3nxm8; roaoux9 very tightly to the nuclei are referred iuo 3:4x;mrvnaaxo9 8 to as

  Materials in which the electrons are bound very loosen9qw( 3mn9eza-ll nr;:0a mrbly to the nuclei and can move about freely within the material are referredr-a r;m0: 3lwnbnz9eqm(la n9 to as

  A negatively charged rod is brought near one end of x ukqz8u 72 vlln:a(7wdd8x7 /sd(w pfan uncharged metal bar. The end of the metal bar farthest from the charged rod 8(a 8ln72d w (7dwlzkq:uufxdvp/x7swill be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are b- xi0hb p,q.mplaced near each other,hpb m0.ix-qb on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively c 5hn,x bl-ih.tharged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with ss u/x:u/pfqgm(t. 2z a positively charged gt : /u (xuf/mq.gspzs2lass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a 0: 4l w2xsddkcp+hr az;l7im;positively charged glam20d:x+iz;4 kc w;l7 dalsprh ss rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscm jxavk.p.8 v-oypz6 1ope, and the leaves separate. Then a negative object is brought near the electroscope, but -zm vjv pxap1y. k8o6.does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table.+lj iqqt c,s)c7f2 -ybpmy8y) 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 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 b7fpcy)qsyi,y8 +2m )qcb t-ljall?

  Charge is

  What are the units of thekw(kp e1l1x )l5p x,hs Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger:l5nck nl(l ))gtpxr* in magnitude than the seconll ))gnx 5cprn:( ktl*d charge.

  Sphere A carries a net lbil x +ch678scharge and sphere B is neutral. They are placed near each other on an7 llbsih+8c6x insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. c( i: tb+agsfm o ;; j:pxgh,93+n tae)kbpj6xIf the charges on both objects are doubled with no change in separation, the force b6 ek) ajbtgtj xp+ san;xmp; oi9,gb:3hf(+ :cetween them

  Two charges are separated byjq/o28jheha6 y01 lck a distance d and exert mutual attractive forces of F on each other. If the charges yhk0j82 oehc1a/6 j lqare separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Wh +k4/5no7ffyt 4tym cgat 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? The forc f/ tyg44tmnkoyc57+ fe is now equal to

  An electron and a proton 8hwh + wu;4gixx k*ho czt5uem+nl 450are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electronwmkx u05wcn +zg4i 8hu54; ht*hlxoe+?

  An electron and a proton are separated by a distanceefr j- i9eqj 5,1mptv*zy (l,u of 1.0 m. What happens to the mazljr(te 5jvq1,ipmf -y,ue* 9 gnitude 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 1.0 m. What happens topfyxxd+z im/.;7 k wv8h-9ins iqn)g4 the size of the force on the proton if the electron is moved 0.50 m closer to the yp7- /m9;zf 4 vi hg)xi i8qskxnndw.+proton?

  A point charge of +Q is placed at the center o:wec2 adn+w1 0lz iwlz5fod3/f a square. When a second point charge of+l/a3: 1ww dwdl e5cnzo zi2f0 -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 center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. b. u(b dyav6b)/i:h/x,imqupWhen 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 thir/hiuvy q:apd.6b) b x,m(ubi/ d charge of +Q placed at one of the other vertices?

  Which of the following is+8xz6lbf+vqg 0p z 1mg not a vector?

  At twice the distance from a point charge, the strength of the lni y4q3bo*w8o g2w )aq*ri8 ielectric field

  Is it possible to have a s7l+z:zyv -gx)(t rlc zero electric field value between a negative and positive charge along the lin(ls+:rg7zztx lc vy- )e joining the two charges?

  Is it possible to have0*fdpv ec+, as a zero electric field value between two positive charges along the line joining theeav s,* f0dp+c two charges?

  Electric field lines near pg)lum4 6tiz c(gls9o1sitive point charges

  The electric field s,qig); f(myep hown

  Can electric field lines intersect in freehv:zc2udcq.7iz : / ca space?

  A solid block of metahxzf h(+9 9brmcc:jg 2rjln27 l in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in thecnh r 7z2j:9j(f92hlgmr cbx+ block's interior.

  If a solid metal sphere and a hollow metal spb8a3dzga vy z+g,yp;4 here of equal diameters are each given the same charge, the electric field (E) midway between the center and the surfaceyy8a,bdp v 43a +zg;gz is

  A cubic block of aluminum rests on a wooden table in a region where am 0ov u7vw 3nzxwd0:hr au-y4( uniform electric field is directed straight upward. What can be said concerniawh (uw0r0 m4u-xzyv7n 3vo d:ng the charge on the block's top surface?

  If a conductor is in electrostati:ahb p,m0dgjiv vz69eo qw ,ws+)kl, /c equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metall.;ohv5we* f+jk2g u h i(2ygdjic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point ;jh v *gy+u52g (whe.o ijd2kfdirectly above the hollow sphere has

State three properties of s;,g7,u p*ynbfq7 izulx/*v wu(oj o 1conductors in static equilibrium.

State Gauss's law.

  The charge carried by one el99 tf*5oq9c/xnqzyyozq81 ia ectron 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 char1mgx;5xcj-ywc0 xg ,f) -w o+qfkn,usge of +2.00 mC. How many more protons than electrons does this piece of pl xy xowjs+g1qfnu w--0x)gf, m,cc; 5kastic have?

  What is the charge on 1 4xu njpy/gbai. 1eam/), 2woujwa)s* kg of protons?

  An atomic nucleus has a pj8m1skn sk,tp8 +b)ccharge 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, havelb(mtqgk8u:4pkfl2 kd 01 wr) charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electrd wg q20tlrkb4)klump1f(8:kic force between them?

  A 1.0-C charge is 15 m fr+sst:y q xhg(u3g3a/tom a second charge, and the force between them is 1.0 Ntaq3st/ u (s+gy: hg3x. What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far ami1ga ;gy3-d*:trbsf 5dx cd7part are they?

  The force between a p5uzs6nejxe/g32- nt $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 28o0gus k3ey t3.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between8tk3eyu 3s0g o them?

  Three identical point charges of 2.0 mC are vtnh/ xb7wv.+jgzt6,placed on the x-axis. The first charge 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 electrow,jv.+b7/n h6g tt zvxstatic force which acts on the charge at the origin?

  Three point charges are placed on the 9r/i)xli 5gztx-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 direct)igx rtil9 /5zion of the electrostatic force which acts on the charge at the origin?

  Three point charges are located m7jezq;jg/n *5p ps,eat the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC atpp gzm*e;,75 je/qnj s 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 placed at the ce:v9nxrs. )0jb+zjeo cnter of a square, and a second point charge of -Q is placed at the up0ovb er 9j+): scx.njzper-left corner. 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); Q3 = 5.7;x,na mye 9e 9szuv*p0 nC is at (0, 0). What is the magnitude of the net force ons,79 vyp; u9 zmnexea* the 5.0 nC charge?

  Q1 = 6.0 nC is at (0-wl;:cszh g*yxv5wm+.30 m, 0); 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. s-ywl ;czhm:5+v*xgw0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of z 0megll i6c( n+r0l9ian equilateral triangle which measures 30 cm on a side. What is the magnitude of the ellmlic (0n6 lzir0+ge 9ectrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what p9tgvw3o 6r 3wvyt6+dn oint, 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 wourn yt6dov+ 93wtg6v3wld be zero?

  A +3.0-C charge is at the origin and avmorn2*)m+yz x9 9 /ke; nydnniqu +:e +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net f:ynnz;vx+e n2mk9id qo9)ye +r*u/ nmorce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. 0bpvwsu* :gorax2,a 19cwz ea+lx )b1Where can a third positive charge +q be placed so that the forc s1xx)*la9b2+oaar z 1buwvcgpe:w,0e on it is zero?

  A copper penny has a mass of 3.0 g. A total of af (.zy4*n6f+ :gykng t)wyoc$4.0 \times 10^{12} \; electrons$ 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 grxv hn2 f;pcv8v j*jdp,k2b3- fsyzr;/avity by the attraction of a fixed p2v kypcv 3 8jf2fs/b*p,jn r-;hd;vzxroton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point6c;/65khamfx vdjnhxdqwq- cp +.4edgx q 81; by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle 1vc+xqdmqxxfj8 akhd;46 n;eh. 5 /pq-gcd6wbetween 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 djfmbok -7k w)t( d(.eof the electric field at a distance of 1.0 m from the nucleusk().ew bktfd7jo(md- ?

  What are the magnitude and direction of the electric fiel64f5b3 6 :b.gtqv qzd l qq2eh9ryg.wgd at a distance of 1.50 m from a 4 vqd53t:eg2z.bq9qb6l .rfwggy6 h q50.0-nC charge?

  A 5.0-C charge is 10 m from a smal ye4memhxx/kix17l q/7yk + s8l test charge. What is the magnitude of the electric field at thm hxy +my41eqs/ k/87kli7e xxe location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dieo*. vpi.vm)s(ma) ;p53;yod ud lsz;j*d y ywrection of the electrij )(ye*mpw;ylzd .3;oyid.v p)sva5s;*ou d mc field?

  A 5.0-C charge is 10 m from a small test charge. y ,;cqa t)ylav87m9e n What is the magnitude of the force expel8c ;,na7y qvy9 )meatrienced 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 are separated by a nej41ioaw9l e p79thg+lu;( vdistance of 4.0 m. What is the electric field at a point midway between th4 vaigleel+ptn997;1owhu( je two charges?

  A 5.0-mC charge is placed at the 0 cm mo 0ve0(te8dhc: *dg) vanu+xq ark of a meter stick and a -4.0 mC charge is placed at0q 8catdnd0evuvo()* gxh e:+ the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed aps4yb.fn) c-:avo )(vq yji(y t the 0 cm mark of a meter stick and a -4.0 mC charge a f iy.)v(cs4qpjny(yo)bv -:is placed at the 50 cm mark. 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 are - w,o vi/mt 0-viw0i3ffnhg4w placed at x = 0 and x = 0.20 m. What is the magnitud30,v h- wvig4f-tfw wmi0i/noe of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squarehj 9x*4 ,dbuh d vznod2e.xy11 of side 0.50 m. The last corner is occupied by a -3.0d*21x v4 e1,ubn. do yz9hxhjd 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 at the corn+g3w.n jsdat v 4+kwdvga.th:yvo9 *;ers 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). 4*tj:9n 3ohwavt was.vk y+d ; ggd.v+What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a chaa-rmw6+ liq/ 5 v5ibgwrge of 5.0 mC when it is placed in a uniform electric field. What is the magn/b i-awm q l6wrv+5g5iitude of this electric field?

  A particle with a charge of 4 too a s9+y/f+-nvf)nk.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 N/C poin0odfldqj6lhfg 62i x.: cg ,*cting downward. What charge must be placed on the ball for it tgc6,.0:xcjqdd lf g 6fio 2*hlo be suspended?

  A foam ball of mass 0.150 g carr0wak pn qlv*v vb2d025ppb4q *0ez-sries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspendev2vq 5kb*2 0q*epd-nr0pl 0 absz 4pvwd against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cqqt pfoj;bk8 zb*cs1) qv6.m7m carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere t6kopqfq;. )b1jmcz* q78svb's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the r5wyt j: z3)vmelectric field 6.0 cm from the center of the)j5 tvyrz:3wm sphere?