State the law of conservation oi j 2-0mo- fk)3zvgem4kd-hkyf electric charge.

  Is it possible for two negative chax ty6n0pd/ny; 7* bboxrges to attract each other?

  Is it possible for a positive and l1 zj.;c3nyq la negative charge to attract each other?

  A glass rod is rubbed swl.r/:jv:)* 5 c9ywnvdl nnswith a piece of silk. During the process the glass rod acquires a positi) r:/.nc9vvw nl*n5 sjsyld:w ve charge and the silk

  A proton carries a

  The model of the atom showsxe*-wf t(u7rwyr w2d yg8do+( 0jy* xj a

  A neutral atom always hkvoe +zl2il l;(qs/1oas

  An atom has more electrons than protons. The atom gg3;j 4pd11ayziu; qoex,jn2 o2ex u4is

  Materials in which the electrons ardtk4av, zi/: pe bound very tightly to the nuclei are referred to i:a , zptdvk4/as

  Materials in which the electrons are bound very loosel1 2qa6:hh wymly to the nuclei and can move about freely6 am :h2ywq1hl within the material are referred to as

  A negatively charged rod is brought near one end of an unchargedxmf5r2(jxhtq2 9utl 5be: zv/ rv4r+p wrxx7: metal bar. The end of the metal bar farthest from the charmqr9xr:hr (2te v:rfj/vtxp 5w24bl5zx +xu 7ged rod will be charged

  Sphere A carries a net posiog+r6y+g;2 u9qhxz oq0trpu 7 tive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is brie9r06q+ oux+zhoqyt g7 ; p2rugfly touched with a wire that is grounded. Which statement is correct?

  How can a negatively cdqq oss:y85* wharged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a poswxcb v 4x4nev3 f66bl/itively charged glass rod. The electxl v3x64 eb /fw6b4vncroscope

  An originally neutral electroscope is grounded briefly while n7ew8qu*m +h asn.t;k a positively charged glass rod is held near it. After the glas8a.*+tunm7 h; nke sqws rod is removed, the electroscope

  A positive object touches a neutrald23blwml /j yxw6e4mh 5rc m1rke6a 68 electroscope, and the leaves separate. Then a negative object islbmkcw 8lme2arwe6jy6rd 46mh1x 35 / brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placg6iq* ( fdm/ )vhi2yrced on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral mg*(hym /dicv)q f2 r6ietallic 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 Coulomb 5xvjf uxsf+yt ,b6v93 constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first ch,9w r*d;ud2ch*ceqv ykearnret;2 / 4arge is larger in magnitude than the s d2hetv/rdr2 9;w ak;ecc4,qny *ur*e econd charge.

  Sphere A carries a net charge and sph gw2k( 2b 0wifi :wvhbw*h69p,qij3plere B is neutral. They are placed near each other on an insulated table. Which statement bb 3pw,60q j *w i9l2hv:kihi(pg wbw2fest describes the electrostatic force between them?

  Two charged objects attract each other with a ce.:p5okq /)y:f*u z-ovou a e2w-ilm fmrtain force. If the charges on both objects av e:ula:km)/yfz.2owo-o 5p- q*ifm ure doubled with no change in separation, the force between them

  Two charges are separated by ) )5g-+rh)fw u ycer(fd+bzloa distance d and exert mutual attractive forces of F dw-)) (+ +)rrzgufb elfhcoy5on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attracnido8y02 x8z ru0yu4it 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 centerii82 0z0nyy4dxuu o 8rs is reduced 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*x2bkbdi.1 mw p ys.;l happens to the magnitude of the force on the proto2i . d*;wybmslkpx1b.n if a second electron is placed next to the first electron?

  An electron and a proton are separated by a dist bhbl(6(fe08swt ws /hance of 1.0 m. What happens to the magnitude of the force on the first el8sew(fl0h s/ ( twb6bhectron if a second electron is placed next to the proton?

  An electron and a proton are separated brkmk6m0p 5ao,y 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 the prot5o,m rak6kp0 mon?

  A point charge of +Q is placed at the center of a square. When a second point ce6iw0tdpgq:((cm/ os yg2v 4u harge 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 squar0s p ( /6civgut:gw2od4yem q(e. 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 cp52g a mh,l7ewyw6n(yentroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, a56w mwn2ha7y py(,e lgn 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 third charge of +Q placed at one of the other vertices?

  Which of the following is not a vectr s y;boyfo12f;/5nxhor?

  At twice the distance from a point charge, the strength of the elect4nw ipwt971im5e1fw b0rd t gge 5u9/oric field

  Is it possible to have a + 1kg)8+d 8l j2bw v/ uh8mjfax-sglnazero electric field value between a negative and positive chargeg8)j82n bm lfjw8a k++ ls x-/dhvgua1 along the line joining the two charges?

  Is it possible to have a zero ,*5pm9bh grb 24w oernelectric field value between two positive charges along mw9p er,52o4h *nbrgbthe line joining the two charges?

  Electric field lines c7l p4s4;mfl/dfdhg7g3w1e:q,b vp rnear psitive point charges

  The electric field shown ddqr4h( ,3svl/7ymmp

  Can electric field li:c7ww8rud 0l wr2zp zmw hm757h5(okdnes intersect in free space?

  A solid block of metal in electrostatic equilibri53op d+z; ocucxg:9ko um is placed in a uniform electric field. Give a statem;9ucd z:k +oxogc o3p5ent concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diayk0 r4embb db+;:o ;upmeters are each given the same charge, the electrpo k0r um;yb+e d:4;bbic field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a k 31tjkax 3y,luniform electric field is directed straight upward. What can be said concerning the 1xtj3a,3kkly charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electr5kp . n+2mlzc pgr)8nkic charge

  A positive point char+t uniiuc:eo/gxj; y o-rm4kio( 2 ;z )o3bd*sge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sph3j;m ii+xt4)nrkc-u s(oe;2io ygoo *b:zu /d ere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stm fy(39: pj7*htldnua atic equilibrium.

State Gauss's law.

  The charge carried by one electrx/om9ze-,nr,wdl8wajz6d sk20 4u q p on 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 cbyus 4: go s:sg3p0zb7xni-1hharge of +2.00 mC. How many more protons than electr7y ghbzsuo3 bps ::is4-0ng1 xons does this piece of plastic have?

  What is the charge on 1 *g,ao: 9 7wf debnjat)kg of protons?

  An atomic nucleus has-hu kj)o g9wnvs39,ph 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, have charge values of 2.0 and -4.0 m+ms. rem0f 6i n:x3kmc14m zwhdu37ox C, respec n 6+.xmh1rmcfo4xez03mku:s 7 w 3dmitively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a. 33 jicsfnmn sp xy5vc,az-)fxp-/ w) second charge, and the force between them is 1.0 N. What is the mag .xwfpij ,s3a/pyn zvs m))- x3f5cn-cnitude of the second charge?

  Two 1.0-C charges have a force between the o 5bv.s 5rl/2u9i5kxi,kq g9 9wfntvhm of 1.0 N. How far apart are they?

  The force between a xsd7l+ pmv /-/p ,f,i/pbs zrj$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiencrlfp:fawm -5*h e;p )se a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between th5ws lp-f :rfha)e pm*;em?

  Three identical point ()m+ mphxmjzn7hvz 03 charges of 2.0 mC are placed on the x-axis. The first charge ivhjn7zmh+ mp(3mzx )0s 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 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 place hhw4hr c:as+*d at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm marr w*hs+:hc4ha k. 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 fooyb sc);3 b6olllowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3o3 b;y)os6c bl = -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 sqtnckagq5i/6-6vhjd -2+syaquare, 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 qa66 -/ivytshn2k- q+5djacg third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m,fopu1 ijfol- -m)q 2vu8ksuo- 7e q2u0 wa2i,r 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net f8uip12qua2,so0)- omi ek-o uwvju q-rf2l7force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.306x0jqkx 6vbh 3 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 h k0x qb6vx36j5.0 nC charge?

  Three identical charges of 3.0 mC are placed as5ibx f:e 5fwb .ah4.at the vertices of an equilateral triangle which measures 30 cm on a side. What is the a ih:5e.4waxbb5ffs. 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. 9-q bz t.cg,c(nb hm*lAt 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 it would beghm.9cb-lb n z (q*tc, zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at0vz gck4 j:3r(urc,nfg z *o.w x = 4.0 m. Where on the x-axis can a third charge be placed so the net f:(*ou0 c4vzznf gc. 3krrwj ,gorce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. nw/9z9nsrsl jk((7 eu Where can a third positive charge +rnwl(9kzj/(ue9s7n sq be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totalmb0 hfr*n. na7g- fws; 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 agaj2wwoki *c ,-oinst the force of gravity by the attraction of a fixed proton some distance above it. How far ai*2ojco,w w-kbove the electron is the proton?

  Two 0.20-g metal spheres bdfu *s:wm5 a p1tf:,kvz73qbare hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart u*uqz1 ta mbbdw35pv7: :f ,sfkntil the angle between 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 of the ele p,igtlpq9d02ctric field at a distance of 1.0q90pd 2gpi,lt m from the nucleus?

  What are the magnitude and direction of the electric fbb qwcj w)a(e:7/run/ield at a distance of 1.50 m from a 50.0wc: bwa/nb /e)ujrq7(-nC charge?

  A 5.0-C charge is 10 m from a small t5ddve7 2o1rtb est charge. What is the magnitude of the electric15vor2tdde7b field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test cha-os5.u6 3tv vttgimr 1h2yem13t4c rcrge. What is the direction of the electitmg1e su6 vccrtom-4.vt5 y12h rt33 ric field?

  A 5.0-C charge is 10 m fromomy.eg-fs 22uxws;1 m2tz- :c0rns qk a small test charge. What is the magnitude of the force expsx -qu:m 2wo;s.2nem- fzktgc2yr0 1s erienced 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 andh2y(h ien: -kc are separated by a distance of 4.0 m. What is the electric field at a point midway between the two ch e-hc2:ky (niharges?

  A 5.0-mC charge is placed at the 0 cm mark1 zu h -k(r46wsdq:tay of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at t ht krz q4:d-y1su(aw6he 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mCh(hedrr*:vh8gc uvi7 2 s)3k y charge is placed at the 50 cm mark. At what point on a line joining)i(v vh73d2rrs h :8ch*g kyue 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 bbk t86x46y2ontrp,x = 0.20 m. What is the magnitude of the electric field at the point mixo4krbp6btty,n28 6 xdway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Thes-l2zn j;:1(gxrio km last corner is occupied by a -3.0 mC charge. Find the e m xorj1n:skl- ;(izg2lectric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the co,.rg q zib3xs+rners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, .+s3qz, rib xg1); +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 in a u9h 8 t0ishpxw5s 0qo8lniform electric field. What is the magnitude of this electricilp t09hhqs0 wxs88o5 field?

  A particle with a charge of 4.0 mC has a mass of x9/gg rjz) t 3,xmro2 :sm9ifb$5.0 \times 10^{-3} \; kg$. 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 electriw tc74r qlpu9*c field of 6000 N/C pointing downward. Whq 9u7*lwp4r tcat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nlt2 /afqscx5(c u2y bnm;hay l8n.5j- C. The ball is placed inside a uniform electric field, and is suspended agsn5my l2 u;h5nb( a8.cja /qyclxf-t2ainst the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a cu- 7ac 1sepqc1harge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surf7 p a1cscuq1e-ace?

  A metal sphere of radius 2.0 cg 8t6mb jr sy.n0yhgry*9:gw2 m carries a charge of 3.0 mC. What is the electric fieldtg.s b*rmyhgg06rn8yy wj2 9: 6.0 cm from the center of the sphere?