State the law of conservation zncoeljk e: eb: 2)k++le)+xfof electric charge.

  Is it possible for two negative charges to xan4wc;d76;n oq1p hp attract each other?

  Is it possible for a positive and a negativeqha m8b7o ,7np charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the gloc;:pe/uwh/x u -obz3ass rod acquires azuh/b:w x 3/;o ce-uop positive charge and the silk

  A proton carries a

  The model of the atom.zu+loczj8ney; p8a7 shows a

  A neutral atom always7k:+ knpqp (r 7pa)wvm has

  An atom has more electrons than p ynj m7t()uag1rotons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are j:3lcdu,vq 1 a)nz awlvr486j referred to aszcj 8n3a)1j6w d:l4av,lu v qr

  Materials in which the electrons are bound very loosely to the nuclei and ca 9et udp6l4q);xt+bagn move about freely within the madtg;b)lptx 9ua 64+qeterial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bare.uot cm*x )x*. The end of the metale.*ox*mut )xc bar farthest from the charged rod will be charged

  Sphere A carries a net po:rwifnqc9+ )t sitive charge, 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 sqw) ticn+r 9:ftatement is correct?

  How can a negatively charged rod charge an electroscope posittbo ai h 7ti*(8u+:2l6z o s2ojnd0legively?

  An originally neutral elecc.xug35k *p+a:j 4z mhp+np gltroscope is briefly touched with a positively charged glass r:45ua mngk3.hj cl *zp +pgxp+od. The electroscope

  An originally neutral electroscope is grounded briefly while a posy 3ay ,wm1waa:itively charged glass rodyaa amw,wy1: 3 is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutralko ,b5 ,u (g6/caqm4o7r xj7r3 qiyocx electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the q c3 mrbx6k,4aocro7,7 ug/q jox5(iyleaves?

  A large negatively charged object+ yg5yd4x-64lw tpc.dxgj ynjr9l w04 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 forward, but does not touch the negative object. At no time does either ball touch the negative obclj .4+ydjw4-rl0654xyt9 n gg dywpx ject. What is the final charge on each ball?

  Charge is

  What are the units of the Coung p)d(;zi8uhl 16qd3cwh 2rolomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distanceht2lbb9*k:ahx s 52wl d. The first charge is larger in magnitude than the second charge.wtl bxkl*5hs92ah 2:b

  Sphere A carries a net charge and sphere B 9l,kt u 1ugc)bis neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic forceu9l)1c, gtbuk between them?

  Two charged objects attracv 3/ym,obfcp aj3d. 2pt each other with a certain force. If the charges on both objects are doubled withd23oj c.av3p/,ym pbf no change in separation, the force between them

  Two charges are separated by a distance d and e r/l*orf6k 1 yj yb6tqco.+/ktxert mutual attractive forces of F on each othejob6f l/6rq/.ykrk t*oy1+t cr. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with at9iuzyf9 n4h7jt bjye38v-7d 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-j39b8- ydzhfi9ye 7tj7nt 4vufourth its original value? The force is now equal to

  An electron and a proton are separated by a dist3) ez zz ixz-tnes4w d*5v)zi7ance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed vn xe 4w37z* -z 5iz)dsz)itzenext to the first electron?

  An electron and a protogw9j4z vzi-pi a 2 m-,f9xws2rn are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed nexzvz2i m,sww-fjax9g294p-i rt to the proton?

  An electron and a proton are separate :ow09,yi7i j gamn); lkj rxtgc35h.md by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to tg,;)i: 3jt xi7wo mrn5m. yhkclg aj90he proton?

  A point charge of +Q is placed at the center o4h5n/dqp8fov xv4h *h f 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 the square. What is the magnitude4hv v8*hhq/foxp5d4 n 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 triangle7e-er6i ;; ;41tm amd irguzpa. 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 chardrepai7iug 4;m e1mz a6;;t-r ge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not 6fox15lho 3 rzrmo k63a vector?

  At twice the distance from 02j8ja ohuk188qjnf-wbe .vxa point charge, the strength of the electric field

  Is it possible to have a zero electric field m e*fbos21 ii5value between a negative and positive charge along the line join2eo bs5i1f *miing the two charges?

  Is it possible to have a zero electqrorpm7q k0xx es*9y a 6 n8rmtu64n1:ric field value between two positive charges along the line joininrm r q8sq: 46xx1t0enk 7 nry9*ou6mapg the two charges?

  Electric field lines near psitive pointbb/:) z.fswgt charges

  The electric field shown 8ebu l ,idsxq w1;kepv9-r7v.

  Can electric field lines intersect in xn:yr yz d+0hm46sc 6zb0qk7p free space?

  A solid block of metal in electrostatic equilibrium is placed in aoj)iw8qw- k-zq.ps0t uniform electric field. Give a statement concerning the electric field in the block's w)k qoq.wip-80- stzj interior.

  If a solid metal sphenhd n87kqef8x 2q3hp0re and a hollow metal sphere of equal diameters are each given the same charge, thenhkeqh783p n f08q 2xd electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests v 1(d- fzhe6;o2oh gvgon a wooden table in a region where a uniform electric field is directed straight upward. What can be sa(-v1ooh gvd6 f zh2;egid concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium nea.x)xvm lli *x1r an electric charge

  A positive point charge is enclosed in wlr+ ) aob.u0cz2,bt a4iwzd -a hollow metallic sphere that is grounded. As comrzd)oui - zbb2lt+ 40c.aw,awpared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of coua3 31lczfci9 nductors in static equilibrium.

State Gauss's law.

  The charge carried by onxc xs05kz dr17e electron 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 lz3lgz81tcr,2 tf)s :y zszx7 +2.00 mC. How many more protons than electrons does thit zz23lz,r1tgyf ls:s cz) 8x7s piece of plastic have?

  What is the charge on)o q5ibt j0p qa5mx1,d5wr ;yj 1 kg of protons?

  An atomic nucleus has a charg 6si 4gro8 2b f5hy0ky68okvwie 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/hc4lo7h t3 /brve 8sp.0 and -4.0 mC, respee3//h c47 pt slboh8rvctively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between u n6u-2,ez kchthem is 1.0 N. What is the magnkucunhe 2z,-6 itude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?csk0ibrml,jj5 33kn- do2ut5 xj16oia h )o9 z

  The force between a me w wwf4vp i*uo18+m ;npo/)l$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0y+ ; 0y6pwb)t m4vqie1efnff 2 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is thi01y)+mf4; twv2en e6p qfbyfe electric force between them?

  Three identical point charges of 2.0 mC are placed 2hzs)vr w ei 4b9z/b nhy146ezk.cmd.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 electrosta.k.i9enebv/r2s6 y)wb1d4 zzhm4 z chtic force which acts on the charge at the origin?

  Three point charges are placed on the x-va0 ,su5sytiq2 5dxn0 g r53ww1geko 6axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.03i 0wknxe 0v w,a2r56quy1st5 s5dg go mC 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 located at the following positions: Q1:sm d6su n11 ksv3zgc0;rf7)ztteut: = 2.00 mC at x = 1.00 st1u csgte6tzk n:sfmv 7d)u;r: z103 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 3.00-mC charge?

  A point charge of +Q is placed at the center of a squareyhyd lp)mqpj4t5jy2.21q wn4 , 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. What is the magnitude of the force that acts on the center charge if a third charge of -Q is placed.d4q1jh y22)4ptn y5qw yl jmp 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 kn.ybj (--d(jjd ,hlr = 5.0 nC is at (0, 0). What is the magnitude ofh-jdnl, j( d.-j( kbyr the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1q qo1fwgrd .i3)b *rre o.5ki/.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the nir bf. 15 dwre/.gk) qi*3oqoret force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at tdp 34wc6q7zdp77 c v-cac de1rhe vertices of an equilateral triangle which measures 30 cm on a side. What is the magn7a-c 34wzddrecc71q 6d7c pvpitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which a(jbeixao1 , pd(; 0ylwre 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 0(pildo1 ey,w baj(x;electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4y * -)(xsz-3gkp esimc.0 m. Where on the x-axis can a third charge be placed so iy)(gss p3c-z *mke -xthe net force on it is zero?

  Charge +2q is placed at tht o7quax /wv.fe - srwci810(,q aj0tme origin and charge -q is placed at x = 2a. Where can a thf tx a0 0(/7j8uwsqov1qmt.- ,irwc aeird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of- xm,ubpr71 ll $4.0 \times 10^{12} \; electrons$ 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 a9vt -m7;jx;wwe1oqg+ mw*ns zgainst the force of gravity by the attraction of a fixed proton some dmwovntqm1; z; ew9x*s+7g w-jistance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common pojocv h,8;x s +y4h5owf;no z/l:z z7dfint by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads 4h hoo;7+8fn 5zjvyo:dw l zszx,/;cfis $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is h -pzj8aubumn2 p+r01the magnitude of the electric field at a distance of 1.0jpr2uup0+ abz- mh n81 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance v(: rwr w(tsd+2t 99ln4swpf rof 1.50 m from a 50.0-nC c r( f9s(wvr2tn td9l+pwr4sw :harge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of th3zpt ;retye (;y0a* lke electric field at the ;rzk*lyy0a(pt3e;e t location of the test charge?

  A 5.0-C charge is 10 m from a small te9lwg kq)qnea1(m s8 p9st charge. What is the direction of the electric field?q8qwm9l ) kp9g1a(nes

  A 5.0-C charge is 10 m from a small te,tfgf dx:g1klj7 em /e81k;bfst charge. What is the magnitude of the force experienced by a 1.0 nC charg/gfjk:1 x kf1 87edb lmegf,t;e placed at the location of the test charge?

  Two point charges each have a val5i esip 40a--g 8us/nsushi o(ue 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 chargesin/e -hi0su siu5 aso(s4g-8p?

  A 5.0-mC charge is placed at the 0 cm mark of a meter st46lltra5bokme7w 0d 4 ick and a -4.0 mC charge is 47l d4 w6tkmblo05rae placed at the 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 a meter b*zop)gasi2 cp yk628stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line j * 86 gc2saiykpz2bo)poining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. Wz tw 3clxsds)1pg+w7/ hat is the magnizxw1c l3dts+g/7) wsp tude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sp5xdf 4 b;hw3side 0.50 m. The last 5; 43dhpwb xsfcorner 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. Charges are placed at d;vkk vi 39(66*mir ittc0r suthe corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); v(umitkr0i; 6k v3*d69rt s ci-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 charge of 5.0 mC when it is placed in a uniform electdy:rs9je 2 ede7, qy -ds8aw+bric field.bdeq+2rs d ew-s yje: ay7d8,9 What is the magnitude of this electric field?

  A particle with a charge of 4.0 mCwkzva gyzvt u25*5/,z 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 jhx8kv85f w2xpointing downward. What charge must be placed on the ballw2xx h f8k5v8j for it to be suspended?

  A foam ball of mass 0.150 g carrie)+hwjya9s; n gn9b.m2ffhs v,mq i9/cs a charge of -2.00 nC. The ball is placed inside a uniform electric field, and i./ f,cyjam fm+nwnb ;9sh 99vh) sqig2s suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a ch)1 ylc54 x;rjbja/rr large of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfaceja1l /)ryr 4r jx5b;cl?

  A metal sphere of radius 2vj:db vry8ha zf9z,o:su hd +3qge33*.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of :zf8 +dsh,yzguv jqao 3d93:rbh*e3vthe sphere?