State the law of conservation of elecv-yn(1o( cyw.xi *obv/ 88mhw z p8zleqd, 3uqtric charge.

  Is it possible for two neg1qjl,p r2 3pfgative charges to attract each other?

  Is it possible for a posiisvgpx (m +1ep+oq 4+mw1-ngv tive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. D,azp qjn/(7qt uring the process the glass rod acquires qpz(/7 nq a,tja positive charge and the silk

  A proton carries a

  The model of the atom show (omk:ho( p,jdx6qyq8 5 glqtvc6bmu5;ji+p)s a

  A neutral atom always hayfr375uq*+qg cbivg 3+tfa /bs

  An atom has more eleh 2k42jiv8ruh ctrons than protons. The atom is

  Materials in which the electrons are bound veryme g. +l4x2s1e-gj05oikgu x m tightly to the nuclei are referred to m+4u5l j0gs kg- iogem x.xe12as

  Materials in which the electrons are bound very loosely to the nuclei and*e6rlby58v d * ulofup6fb,f: can move about freely wib :of5fevudulf6b pr8 ,* 6ly*thin the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. vko0t47nb o- q:kfvcy8k4dxv/gv- 4k The end of thvkcf 8kq4d-o kv:g bx/kv 4y0n7v4-t oe metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and spdtw/ fs:w9mq(here B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with aqt:ww/f( dm9s wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge i/wpde ot1+- j;farzv9/rcv1an electroscope positively?

  An originally neutral elecqu(.;y h r) sdyet6nv1troscope is briefly touched with a positively charged glass rod. The(y 1dvueq n 6syr)h.;t electroscope

  An originally neutral eley 7,h+,; d/xebhay8bw 6tw9p i-u gkgactroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is re, wa9g xeu+t67ihw bp -b8;dh/ga,ykymoved, the electroscope

  A positive object touches a neutral electroscope, anq wbbn6 )*mw,mb74wand the leaves separate. Then a negative 7mmn* a6nbbq ww w),4bobject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged objew(c/fhpcwj e u.4 5z:pct 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 stops. The first ball rolls forwazcc4wp/( u.f wp:hje5rd, 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 Cdjczkxj:4lyn7ouu (mkbo -7z( v:3 )voulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distancuqex w+m(1)v lbpe0+ f-5mmv ze d. The first charge is larger in magnitude tha+ z5x1 m)e+lbq0fwv pmmu(-evn the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nea8uv95 0 ced )wbcyn1zer each other on an insulated table. Which statement best describes the elbwe z1d8c9yn5e 0c vu)ectrostatic force between them?

  Two charged objects attract each other with a cib7sqy,l(u *kb/q/ s4 dogf c.ertain force. If the charges on both objects are doubled with no change in sepau db7c (q*yb kqli/,4 o.gf/ssration, the force between them

  Two charges are separated by a distance d and 7c l;skh5)cu 9 fmy k5yj6/h)m*jbdgwexert mutual attractive forces of F on each other. If the mbg9f ch h d)wy65*/lyu7j)mk; c 5skjcharges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attrac6ufqw/2hc ,qyt 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 rh2fqcqu y 6w/,educed to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens bc jobre7 .da,x.o9;7zsk6ou to the magnitude of the force on the proton if a secondsxzb db 6ko;e7.r.a oo9c7 uj, electron is placed next to the first electron?

  An electron and a proton are separated by a distance o /1,qicihn 4(1hulg s5g/uszof 1.0 m. What happens to the magzg,5g/1 hqiu sshu c(o41n i/lnitude 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 )oenxt3h m3*ak6 cqud o*c p9)m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the proton*c)mt* )x39q3 uedphooa n c6k?

  A point charge of +Q is placed at the cente sa iz7;hs:80 ndmnncy7jp/ t)r of a 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 s 7njs0cyan;8 tnz7 dp :hmi/)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 equxb+3/ +5kqp kr +u8/o zlrysigilateral 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 d+g8qr3rop +/ zxylu si+k/ b5kue to a third charge of +Q placed at one of the other vertices?

  Which of the following is not ajyz y8*ha6 j7e e4kkn3 vector?

  At twice the distance from a point charge, the zhgif5psb yj (z/90iozq +v7/ 8 vrw/lstrength of the electric field

  Is it possible to havt nr8myhh7 k7 :gslf9 *0cpys8e a zero electric field value between a negative and positive charge along the line joining t*lyr8fh7yshs npgk9:ctm078 he two charges?

  Is it possible to have a zero electric field vaw m/e eo93x3f+o,j+0w pdrwlr lue between two positive charges along w0o ,fmed 3r j/wro+9wl+pe3 xthe line joining the two charges?

  Electric field lines neq g,j8w8o4:wgj3c(phl:b fp o- htyh9ar psitive point charges

  The electric field shown z3uzo.v2 g(fd

  Can electric field lines intersect in fre+gc pd/ry0v y pmjp g;2 ,fs+rs+r9-gye space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elec yx,/(5zkwusb tric field. Give a statement concerny,/uzw 5bs(x king the electric field in the block's interior.

  If a solid metal sphere and a hox *z/yf7dhr fc(0o.je llow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between ty7jfze .*h/f xcd0ro(he center and the surface is

  A cubic block of aluminum uqa25t3if)by rests on a wooden table in a region where a uniform electric field is directed iufqy352bta) straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electrkj7apt z(l. t2/+qv .)xwws)wljk 0jk ic charge

  A positive point charge is enclosed in a hollow metl w mzc vitvm6r ,6.6d9x4lw1- xf6qbuallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow spher6zl r 66vbcw,1q6tf-m 4xv .ul 9dxmiwe has

State three properties of d kzbwm: a8 cchz05b: ) e)7t2b;yylneconductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron i, wiqe 7f8( g2/aqequvt bb2jkvae*.d.4(cmj s $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2.00 mglea(p(zv n +2q,asb6C. How many more protons than elect a+a,n6(bqvszg2p e( lrons does this piece of plastic have?

  What is the charge on 1 kg of protoua:rk:w5xkl/x lqx:;yc*t4t cxc3) e ns?

  An atomic nucleus hatlle)2 f+9ooh s a charge 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,, 1o0o ztpa1sm have charge values of 2.0 and -4.0 mC, respectively. What is to0mto 1s ,1azphe magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force a;o6gc+cjjcl,y+c4dt : u i vm,lo9 pa 5ay9x)between them is 1.0 N. What is the magnitu9;v y+l:iju tm6y+d 9,)plcxaoc4aao ,jg5 cc de of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are thc:k t)p8du)wpey?

  The force between a xd-iyouv 18 aw c i-*cgb8)w0k$30 \; mC$ 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 fl e. x(7n:mtclorce. If they are moved to a new separation of 8.0 cm, what is the electric force: 7ex (nm.ctll between them?

  Three identical point charges of 2.0 mC are placed on * 6.*i7cfr4 ufnepb6l.i ugvcthe 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 electrostatic for*v6fip rc*.u .67lf4ceuni g bce which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A c)2thi jq,-l ;s c:vhqcharge 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 magnitudeq,c sh;-vicl: )th 2qj and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the du xwe o:z xpt5(y*;i3following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -15top(;xd y wu:ix *z3e.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, anh0w kd5 :o8aoed 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. What is the magnitude of the force that acts on the center chargek:doae0woh58 if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q+:3avf)w+n lhnw gkn pxoo+**2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force)*gf :owaonn*+kx+n3 wvl p h+ on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at- kfw2i3g2v sxe: bgjuf-;rr; (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the k 3 rfe 2irgb2;;: u-wgjsx-fvdirection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC arzlpfgm+ : t(yhtv 6:8at)yh5ne placed at the vertices of an equilateral triangle whicpvn a :z8t)m+thy (6l5fgyt h:h measures 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 are separated by 3.0 m.:*m * fsqw7vom At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic forcq wfm*v:om *7se acting on it would be zero?

  A +3.0-C charge is at the origin and(jhy y-s-dfp:7 7frp,fqy bo- a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it7qod,f-7 pys:r-jff( by-phy is zero?

  Charge +2q is placed at the origin and charge -qh-*eao :wh nv3bo* .zh is placed at x = 2a. Where can a third positive charge +q be placed so that the force o z3ev*whba:h.oh*o - nn it is zero?

  A copper penny has a mass of 3.0 g. A total r2r;,,mlpghe s+gr/ix :1pym 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 attractio ljdjx b0 rk1s8tneiy9/6g x(0de)n9on of a fixed proton someg91l0n9)6x/tnkji boe drxey0d ( 8js distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduc-lp(6xb:lu yd ting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces themu( blp:6 lxd-y apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a chargem+; i37k :r lvmvrbng y,i-r1p of +40e. What is the magnitude of the electric field at a distance of 1.0 m from thep3+ gkm7rirvnm ,i1rvbl-:y; nucleus?

  What are the magnitude and direction of th59nh7 -v(rhvtgzp vm9e electric field at a distance of 1.50 m from a 50.0-nC char7 gpvh-m9v 59tnv( zhrge?

  A 5.0-C charge is 10 m from a small teskd w(n3yt 7t/)3qu pdtt charge. What is the magnitude of the electric field at the (tw td3d7p3n yuq/ tk)location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direccip/4 hqyg7t)7et nt7fahuij+ * 1di 1tion of the electric77h1fije 41/ita qc7p)* tinhg+y td u field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of th4sov d p,5,k v: 9boobg)7vtkve force experienced by a 1.0 nC charge placed a bbgpvt 5ksv:k,o, vv4d9)7oot the location of the test charge?

  Two point charges each have a value of 3.0 C a1zfxh u g,v72 urgj-c9nd are separated by a distance of 4.0 m. What is the elec-j 2rc 97,ugvhfzxgu 1tric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark otlw6kw4k8ep 6wss, (af a meter stick and a -4.0 mC charge is placed at the 50 cm pk46 a,wlsk te6( sww8mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and asy qr5d 6ep9/k -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the elesy9e pk /rqd56ctric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = .;g 8ha6xvun7cr s,n. c.mqnd0 and x = 0.20 m. What is the magnitude of the electric field at the point qs,.cn. amv.;7xgu8dnhncr 6 midway between them?

  Three 3.0 mC charges are at the three corners of a square of jav/8 3q0+wjs*rw v cbqaj0t/ side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center /v +ta 8cbw0w3qjq0 a*j/ vsrjof the square.

  Consider a square which is 1.0 m q7 gd w o:0-4v)3dig7daiuz whon a side. 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, 0); -3.0 mC at (0, 1). What isa3hwd0d-7 o) zqg4ii:w 7uv dg the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC whenwnfv q0m u.2(s )bk 6px+*mmxthwvq71 it is placed in a uniform electric field. Wh7swxm w )tfqh.n u vpq1kxb*+0(v6m2m at is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a3 ldk h(7aniga x*93jx 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 plsyr zj7z45jj9aced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be su97jj jrs5 z4yzspended?

  A foam ball of mass 0.150 g carries a charge ofrs ag- )3/tyni -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force onsy-r / aig3t)f gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 w6/qcvpk f(+fcm carries a charge of +2.0 mC. What is the magnitude of the electri6k vfwq cf+(/pc field 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 th6rul b;8 k3 v9pndpfu(v r)*lje electric field 6.0 cm from the center of the sphefbvr ;pud8j 6 9 3vlk)prlu*(nre?