State the law of conservation of elecuk. (fpsg+z:iraroj(: cgfy sy7 0u96tric charge.

  Is it possible for two negative charges byab 2x(p(lcthc g/. .to attract each other?

  Is it possible for a positiv/j9 iq.nefq.n5h*w1ivv , jrue and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod aqrlq y(6p9jdv1(u9 hg cquires a prh9ypuqj69d(l 1v g q(ositive charge and the silk

  A proton carries a

  The model of the atom shob0y si xy6u: g01skhn8ws a

  A neutral atom always hasu e/x.jopk)o7+ n2au9s. eihx

  An atom has more electrons than protons5sr;h(gr8 wtf9 7yjsq/ro h/b): j egu. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refuwpb*w2+g lflb26ix- err-lipw* x2u+w6 fg blb2ed to as

  Materials in which the electrons are bound very loosely to the nuclei and can p rc l4sli0 1 2yj(ubob,4+vbp-rv/vamove about c2,rb bj( b0 v1+p-vv lr4pis/uao4ylfreely within the material are referred to as

  A negatively charged rod is brought near o+. xzrgz1wemd( ei66cne end of an uncharged metal bar. The end of the metal bar farthest from the charged rod wil6xedz iwc r(eg z1.+6ml be charged

  Sphere A carries a net positive charge, and sphere 6 ;owh8 g9vo)osq5skoB is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Whis)qk8ov 9gooo ws; 65hch statement is correct?

  How can a negatively charged rodvnu ,m7 ro++d 9mx5zjb charge an electroscope positively?

  An originally neutral electroscope is briefly touched withj8wpej3 f:/ec a positively charged glass 8e:/cwefjp j3rod. The electroscope

  An originally neutral electroscope is grounded briefly whipu8s t7noj4;p le a positively charged glass rod in pju;p78o4s ts held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separ a 1vajulp-08kate. Then a negative object is brought near the electroscope, but do a 1klvpa80-ujes not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A nkss.en cmrs-9k dv.9j), be-t eutral metallic ball rolls straight toward the obvds. cs m.e ,tnr-)kks 99ejb-ject, 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 ball?

  Charge is

  What are the units of the C 8h9srefand6hvi84qs9 ni 2v3 a.9s znoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distan7chkn/.p .,lobsa5o6 (0 p 0lj7xcqgrxci w1pce d. The first charge is larger in magnitudewhg5 77bxpr16.0q0 io.s kol pl(c,/cnajp cx than the second charge.

  Sphere A carries a net charge and sphere B is z)m,;p.jf cz7wgn if7neutral. They are placed near each other on an insulated table. m. wgz7fif , pn;czj7)Which statement best describes the electrostatic force between them?

  Two charged objects attract each o65 xvwzij y 9icb8+7bother with a certain force. If the charges on both objects are doubled with no change in separation, the force o yb 5z86vix7i9wbcj+between them

  Two charges are separated by a dicw(vj +q7ljz 5d+wv)zstance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mut() z+v+qzv wdw7lj5j cual forces?

  Two charged objects attract each other with a force F. What happens triitrajqyip( ;wn2(f- e9.o9o the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centii2 9;efpwyr q.tor ((- ni9ajers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a discn 5 .d: k-eop7sbj3wptance of 1.0 m. What happens to the magnitude of the force on the p- jcn ok7:dpbe.wsp 35roton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens to ybr1m3d gq*w1 kw 0si-the magnitude of the force on the first electron if a second kibgd1q w 3 -10msyw*relectron is placed next to the proton?

  An electron and a proton are separated by a distance :er3ncuam *lj7,aj zv0v: r h6ul(/cq of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.57nc:c( jal3 qzueuva/r*vj ,r:l6mh 00 m closer to the proton?

  A point charge of +Qt m3.cngv ov;2une*p-v rq*i( is placed at the center of a square. When a second point charge of -Q is placed at one of the square's corners, gnvrp -mvve u(cn* i*oq3t;2.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 qkjup70w n3w6v c.5gzm2qn) lat the 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 magnitude olu 6qjkw07m 2 . ngpcv)5zwn3qf 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 followingqo de75t-- sv2yiqiq*ok8, kj is not a vector?

  At twice the distance from 2hxs )db7* 5 ku)pru n8wwkw5pa point charge, the strength of the electric field

  Is it possible to have a zero electric field value betweenb(vo 3ov /7wav a negative and positive charge along the lv7wbv3/o ( ovaine joining the two charges?

  Is it possible to have a zero electric field value between two positive qbhr :op-m ;w n2(bg3+nnd6oc charges along the line joining the two gmno( ;rn:pocb dwh6+n3- bq2charges?

  Electric field lines near psimgj:*rzo,4mx tive point charges

  The electric field showj37lr ga;p0u8g dv3du(oyo,j n

  Can electric field lines intersect in free 5rvz.uj f qvlc. )89nw)lm2ngspace?

  A solid block of metal in electrostatb we43305kx vu6tqt46w offan*it70 ul(nn niic equilibrium is placed in a uniform electric fieldl4t3t xq 47 eifan3(n5uu n0 ntk6fw o6i*bw0v. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each p8zcjycmahhiw9*2:3j sjg** given the same c2*8h jwcij c p3*yj h9as*g:mzharge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden ly nlh79q.) j5t8yr -u ;sk)uv:mtcz otable in a region where a uniform electric field is directed straight upward. What can be said concerning tomr5 8vqhk j;un y9lsu:7 )tzy -lc.t)he charge on the block's top surface?

  If a conductor is in electrostatic equlq:x /atoxi g(3.q/lcilibrium near an electric charge

  A positive point charge is enclosed in a hollow metals7 x *h .pjt(.gs kf14ilhzj6:s 0jeotlic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a poihfjeh17ksp*0o46xl:t (tsij.s .zgj nt directly above the hollow sphere has

State three properties of cox) f+ pz4 nnqx*li9o8nnductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron i/l61wkb9fn fapan:g 4 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 ck9rg rcn/,- e.pdi8o charge of +2.00 mC. How many more protons than electrons does this piecp-e.d grn9 oc,r/ ick8e of plastic have?

  What is the charge on (vrd,z h;amaio/7k :l 86bopq1 kg of protons?

  An atomic nucleus has a charge of 5 ov6otxaa;18hm e0g9lgj3yp$+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sep1)xg0c8dtsg o 4l 0tpyarated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the e t84yslc0 dtog0 p1xg)lectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwjq9 uzqt 1;wh+een them is 1.0 N. What is the magnitude of the second c+q1t9;qju hw zharge?

  Two 1.0-C charges have a forc wo)g:d14mpjyw0 0au 5fisd d+e between them of 1.0 N. How far apart are they?

  The force between a yn-dv u:51pib7 j dk)/5e amyr$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, in n,elca)a 5p.35swv r:1se lktitially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, whaaasrte1sp,l55n vc3e: wl k).t is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The f4 v6d (z+lz pacfjxt p)j(k:t( 3/tersirst charge is at the origin, the second toj/z t6cp e+:tfkt(3ra (lvzsxj d)(4p 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 plac9d+he tk*qjg4); tsbs/n3l y 8urh8m3.trc cr ed at the origin, -2.0 m Cjktchs*. 8+q; numr ltt)8h3/geb rd 43scyr9 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 acts on the charge at the origin?

  Three point charges are located at the followinggvqc d e hlv 2n(1/n(05apwae* positions: Q1 = 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 the magnitude of the force on the 3.1 a(vn qc (edw*aghp5v0 en/l200-mC charge?

  A point charge of +Q is plalq25na4tir,kk 8a 4si4 d8g gsced at the center of a square, and a second point charge of -Q is placed at the upper-left corner. Ii lgs4,4 58a 42stdqrkiakn 8gt 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 fa0h.j + ei)unp*qy7o= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net0 hiunqyf.7+o)ep*a j force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 =o39te htx/c)s gi,uq+ 5.0 nC is at (0, 0). What is the direction of the net force on e )xtqiog,u/c+ ht 39sthe 5.0 nC charge?

  Three identical charges of 3.0 mC *buc n s2) mk nugshrra:3z0) wmc;q34are placed at the vertices of an equilateral triangle which measures 30 cm on a si; qn:*4gcs)a 3bk cur02 sunrm) wh3mzde. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whic1x)kzt6g /p-vun hk9k h are 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 electrostatic force acting on it6pg) zht/k -1 kvkux9n would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Wh: 1*piv u (e pljo8mej.cx8z:vere on the x-axis canv ve*ip8o.c:j 1x:mjl u8ez(p a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the orik 0t2bxi8ev2mgin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on itkm2ibv2 e8t x0 is zero?

  A copper penny has a mass of 3.0 g. A tot qo/tf-e *l9vial 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 thrf+ ;hw i -lcf4pvsrzw9++gf;e force of gravity by the attraction of a fixed proton some distance above it. How far above the 4+v -fsfhwrp c+;gf9izl; +wrelectron is the proton?

  Two 0.20-g metal spheres are hung from a common afg3egusmk4 bsea862sy 0 ) 9upoint by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart untif23su 0asmag849e b gyus 6e)kl the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e.qc(qwh jajj6v p924u( What is the magnitude of the electric field at a94apw( q vcjju(q2 6jh distance of 1.0 m from the nucleus?

  What are the magnitude and direce1x u/bt 8rbj3tion of the electric field at a distance of 1.50 m from a 50.0-nC c eju8 bx3t1/brharge?

  A 5.0-C charge is 10 m from a small/+s/jvy v smrt-ur.s( test charge. What is the magnitude of the electric //+rt .msjru-vs(ys vfield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test c7b(*qu*shosbn w:0 s 8- cexxaharge. What is the direction of the eqn8e (bh*scs-uab7ox *w0x: slectric field?

  A 5.0-C charge is 10 mc56ntn-h 1 ktu from a small test charge. What is the magnitude of the f-5 6ut1ncnkth orce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges eachmjf gu kh+jtbi;0dz0rs7)w, apqe (38 have a value of 3.0 C and are separated by a distance of 4.0 m. jmb)pj;u tga r,783(iq d0wf+e0zhsk What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm may5uth09ia2bu5kgq.n ,v +v mdrk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. 0a52yk5 du,i n.h+vmbgu vq9t 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 sticqal -m9jpvyd6idd2 )4 k and a -4.0 mC charge isi 6j)m9pd vq-4dyd2la 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 plvvv ;xruvg++v/ -gx /yaced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway bet u /gx; vvv+r/x-+gvvyween them?

  Three 3.0 mC charges are at the three xtg;eyu: p /(lk.ik e,corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge .klk /gey,u it;(px:e. Find the electric field at the center of the square.

  Consider a square whul 7 e9q0/3 m gkbdufx2m3ks0aich is 1.0 m on 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); kfdskeu a3 0b/9xm2g0u q3m 7l+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 itv3; dd9czvva/ab)cp/9n)h. +jtc j bf is placed in a uniform electric field. Wha)tc+;9j/vnvjzd acbach)v /.bf 9 pd3t is the magnitude of this electric field?

  A particle with a charge ofd:fxg2+jc, 7 lpyt u (3 j4puuu4x*idm 4.0 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 0.12bbv09 q- yl-ifp4lc z..mq*s o0 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed qbify*p qo- 0bm4 .c. vsl9zl-on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is pla. qq v)+c1-+hz z io2*xpueztwced inside a unifox+z- tz)* oqwcep1uiv+ .qh 2zrm electric field, and is 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 charge of +2.0 mC.;nskb wl(7b j/0th,zx What is the magnitude of the electric field 5.0 cm from the sphere's surfac bjk (;/,zs0bthn7wlxe?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mCh spq2rz73 m9wqv1el3. What is the electric field 6.0 cm from the center of thevs7r33eh q2mw qzp 91l sphere?