State the law of cons r/a vc,iokgrw-x/,t 7lch 2b)ervation of electric charge.

  Is it possible for two negative charge(v:;)nieja 3 ) 5lqezni 0otxj z9,e*ebvrpq1s to attract each other?

  Is it possible for a positive and a,v h:c sdi2;gi negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod acfmt vvsz-x; h q):2mrc 9d95plquires a positive charge and the sc -r;mx hz59 vqm:f)v2 9pdlstilk

  A proton carries a

  The model of the atom showos7mj 70t zibs-6. cuss a

  A neutral atom always hiv)wo-neu ba (a -46djb;za4xas

  An atom has more electrons g+vn: +ty:d lwthan protons. The atom is

  Materials in which the electrons are bougy9pxz 3m)t -znd very tightly to the nuclei are referred to as) t-pxy3z9gzm

  Materials in which the electrons are bound vero;6o g0dmw i1)4/ckyglgq2m v y loosely to the nuclei and can move about freely within the material argg)i 4o; m61q 2cm/0dklvywo ge referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. 0uy an3 qcw:gx3zm:t95y7vov The end of the metal bar farthest from the chargedgv0t cqy:azuoy9w v 7:353xnm rod will be charged

  Sphere A carries a net positive charge, and sphere B is n97ygpi-33 fnieppl4 p eutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire th3pif7-pg9ie n l3 p4pyat is grounded. Which statement is correct?

  How can a negatively charged rod charge (aknej5w1xs6pdm : 1 0v8elnvan electroscope positively?

  An originally neutral electroscope is briefly touched with a positiv/qc( 3lwv muaxk4ft; 2ely charged glass rod. The electrosc/ fk;qaw4u(3t2lv xm cope

  An originally neutral electroscope is grounded briefly while atgg9fl,775phequ(a78 :f d2 m wzuupa positively charged glass rod iu2wfup zdq7g( g5 7:7a fp9,mlheatu8 s held near it. After the glass rod is removed, the electroscope

  A positive object touche sq kpe(utf7. uvj81y,5,m3 5bplomdxs a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but dom7,pj,55 ku.31lyxos bep mu8vq (tdf es not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral mznep16e- g9a retallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path6pnezr91a- eg 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 ball?

  Charge is

  What are the units of the Coulomb consta e.w55gwkdrw5nt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largeroi ;ncga-pghocn5 5:zd2z89 z in magnitude than the second cha-zi 25o cn5n: 9hzdo gazp;8gcrge.

  Sphere A carries a net charge and sphere B+ssplm/si+ 5fbdr kv i-: c8a2 is neutral. They are placed near each other on an insulateddmva+ 5/f8 ir s2ibk:-s+p scl table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force.re0i+ h6 as3sg6nmzg; If the charges on both objects are doubled with no change in ahgm z06e 3;+is n6sgrseparation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcess6mwgi 5o4 2:bd3 ssjs of F on each other. If the charges are separated by a distance of d/3, what5dsw23 s j6o4 bmsg:is are the new mutual forces?

  Two charged objects attract each other with a force F. What happen lp/czoj9:0 nns to the force between them if one chapoz0/:9lcnj n rge is doubled, the other charge is tripled, and the separation distance between 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 distahy m(mgtduzi 0) t24g1nce 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 electmugd( him4 2y0gztt1) ron?

  An electron and a proton are separated by a distance of 1.0 m. What happens ti6py 9n8:.qr6 rpl taoo the magnitude of the force on the first electroqppnr .l :6t9 roayi68n if a second electron is placed next to the proton?

  An electron and a proton are znt()t g k /tckl:--as5ndxp 7separated by a distance of 1.0 m. What happens to the size of the force on the prp n5- lkgdxt/a:t( scz-)tk7noton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center oyca+eh4+h r/j f a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electr+rhcj +4 h/yaeostatic 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 thc/r2p4qah4uk* zolcw 4esz0vx8d ),de centroid 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 is the magnitudez ,ce s8 zokqc2u)rvhp0/wl *d4d4x4a 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 a(cdx1.e ov1 af vector?

  At twice the distance pd h1z.c8d+xf from a point charge, the strength of the electric field

  Is it possible to have a zero eleco l3kz9x9s; aetric field value between a negative and positive chaex o9a;93kslz rge along the line joining the two charges?

  Is it possible to have a zero electric field vab rc9 0k3h:*mxs atffi): ic*llue between two positive charges along the line joining s)i:tc3*ia mb hlxr0 f:f*c 9kthe two charges?

  Electric field lines near psitive +g f(m4 )scl0izctw*s point charges

  The electric field showq 1( ip4jhld.fn

  Can electric field lines intero x y 1tgu9+pfo1s1no/sect in free space?

  A solid block of metal in electrosta-ls(x:tw;2u d.gmiwo tic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's inuglm(.-w2s widt ;:ox terior.

  If a solid metal sphere and a hollow metal sphere of equals k5aztqk p46/ diameters are each given the same charg46 /s5aktzqk pe, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tvmvv-9h 36sf 5fc(mfvable in a region where a uniform electric field is directed straight upward. 3m 9hfv(mf-vvf6c5 svWhat can be said concerning the charge on the block's top surface?

  If a conductor is in e:a+c j79wujsz *nai0ylectrostatic equilibrium near an electric charge

  A positive point charge is enclo46hbsnwdn +o/ .xzckl3:p,obsed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point kz3 p.n b:, n46/clodwsx+bohdirectly above the hollow sphere has

State three properties of conductors in stqu mdy9 lb)z)l mtn,5bp,zh(5atic equilibrium.

State Gauss's law.

  The charge carried by one ele a lsmh;o:.8ob:p m-qtctron 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 aug*hw;gmlo6:r1 b1 m o net charge of +2.00 mC. How many more protons than electrons does thrwgm o:mubg*161ohl ; is piece of plastic have?

  What is the charge on 1 kg of pro,j hq*2 qu4z)vyrfp ;qtons?

  An atomic nucleus has a charge opmpii8 s39b.(ew;zi gf $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separamxq 4u7lu4m d8l n4 pj(.gov-uted by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectivel-luo 484x.4 qj uv7d ngmump(ly. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m f d8 ,5hpkyw 6x0kab/uurom a second charge, and the force between them is 1.0 N. Wb /6dxh ku5yk wu8p0a,hat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 16w,xyoj +1nyh .0 N. How far apart are they?

  The force between a trqb0 8un e0; 2iif*af$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apv2i m1i mp/p;y8,cs+nd;tyyqart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, w ppm,;y2d8 qvtc+ii1nm/ys ;yhat is the electric force between them?

  Three identical point charges of 2.0 mcs47 k3wc nvla*; x4omC are placed on the x-axis. The first charge is at the origin, the second to v4;oam4l3*c7kcx nws 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 placed at h-wq.z+uad2m) prbs 6the 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 which act2pm bs- h6.)urd qw+zas on the charge at the origin?

  Three point charges are located at the following positions: Q1 = e9f7oe ,)tj wgc1mh oiwf41 x42.00 mC at x = 1.00 m; Q2 = 3.00 mC atow )mxt g1eh7eiwf4fj4oc91 , 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 square, and a second ek(x8nigw9p ):m- o trpoint 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 ri(x o:pk-gm8en) w 9tcharge 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 (q6u)hrt(a4to:hn8 l n7 d pdr00, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net forurapn)q6 :r dtn4 (7h0hd8ol tce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.3f1+yjx+ibg / a* idos+0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at ++yx+fsgj1*i daoi b/ (0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verticly1f::n g 6+fln v,w)ybeh,ctes of an equilateral tri6f,, y+neyv 1lgl:)tcwn hf:bangle which 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 separaz+y 1n ll/ijcy//nt calri4,3ted 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 3irin /l/1+cy ly/ z j,tna4clit would be zero?

  A +3.0-C charge is at the origin ang k2(0evay t0pd a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placedty(kea020v g p so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed 3xq8 qdnms7 6n0mc ib9o6-y guat x = 2a. Where can a third posqu8d63s 6m-co9 7xqn ginmy0 bitive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0zr np;x:a w9;pulxk0. g. 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 against the force of gravity by the attractioucf h *+rhy7-d vju3ev;ri.b*n of a fixed proton some distance above it. How far above the el +u7d 3f h *vvc*;-ryeri.ubhjectron is the proton?

  Two 0.20-g metal spheres are hung from a common point hxx aafggv:w, a;79/ -shzc c8by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between,xac:hgv/z9 8;a gh-sca w7xf 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 ot * tqbvgom;s6wxdxj u5.- s*+f the electric field at a disg xx; q *s*w5 tsjmub+to.d-v6tance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a vq(/g5kjf8 pxdistance of 1.50 m from /gx vq 85jfpk(a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. 2n16blz ;go, 6gnsjoj6 hj i(am.sj4jg(5p qf What is the magnitude of the electric field at the location of thq5jb;go 4ani( f oj.s6j126j6j(sz glmpgnh,e test charge?

  A 5.0-C charge is 10 m from a small test chargv calhy0m1 zd,-/90 hbqh mu7pe. What is the direction of the electrilm z,0bqh9d pa/0-7uhcv1 yh mc field?

  A 5.0-C charge is 10 m from a small 810 w ,q1b)phj5 ri rg+jynqrdtest charge. What is the magnitude of the force experienced by a 1.0 nCjrj bq ,r wh1+8py5n1d)i rg0q charge placed at the location of the test charge?

  Two point charges each htspx(y** *zmhb3h4 w eave a value 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 charge t*3(b hsywze *xh4*mps?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC c/5pnzpb s07 ivharge is placed at the 50 cm mark. What is the electric field at thp5psi v7b0/ zne 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meh o36nu*pj,e6nw:iem1 *t,*l cfw suoter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a liw6*,tee,6l* :1 c *nwfhjsn3oumu opine joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -f d h )k*sf sdia;)sv4fu 6f6r0lsxl:bn*z4b67.0 mC are placed at x = 0 and x = 0.20 m. What is the ma0*ru xs6vsnb4 sl6f;* 4:ffd6ik daf hs)lb)zgnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squarp62s nzs0qva-nj t(8m( h h :gajg1s8he of side 0.50 m. The last corner is occupied by a -3.0hm 0h( hs ns8 12pgtjg8aq-:vz6a(nsj mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. 9hi jkic8,krk4lx/ m*7go6oz Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC k6likoc4z,r7k xo m j*h/8gi9at (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 charge of 5.0 mC when it is placed in3 y ts60r4 ljsgpswm5 78evvt3 a uniform electric field. What is the magnitude of this electrip get m7ss368wvts r50v43ylj c field?

  A particle with a charge of 4.0 mC has a mass2 *nnurjzre522s9tf y 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 8ts8et9+aa on N/C pointing downward. What charge mua89t8e+a son tst be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chargeey (-71zzqzs/l.5adq8cux w x y6ih0x of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?su x6/ z0ai cy .(xq ey5hd-8xwlz7zq1

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the maggpti9 +bo +f(ka/ +c eguv8kg,nitude of the electric field 5.bput,++v + aiokf9c8ge/kg (g0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm car,qsjzl ,0hq,o-s c+bgries a charge of 3.0 mC. What is the electric field jbzl -,cs ,+go0, hqsq6.0 cm from the center of the sphere?