State the law of conservation of em5 x zk4 e:57aqu rq86qnjuv6llectric charge.

  Is it possible for two negaobn0r n jofh 7ah8l;j5;l7(rttive charges to attract each other?

  Is it possible for a positive and a negative charge to attracg bqt cqi4-35..qhbydt each other?

  A glass rod is rubbed with a piece of silkl3hqxzwnozn81h. l.5. During the process the glass rod acquires a nzl w8qh.1zl.53oxnhpositive charge and the silk

  A proton carries a

  The model of the atom shows*p vkg*sg h,7fdg54ea a

  A neutral atom always ha 3l/cov,bo .k-v a2ltzs

  An atom has more electrons th. scsfzh30qz*qzycjej7*k (fj 5n; m )an protons. The atom is

  Materials in which the electrons are bound very tightly temy g0keh 4t1s;qk;f/ o the nuclei are referred4 ; /10mf egqkthye;ks to as

  Materials in which tc 5yf6psj;ekbh )f5-phe electrons are bound very loosely to the nuclei and can move about freely within-5 cf p)h;k6pjsebf5y the material are referred to as

  A negatively charged rod is brought near one end of an uncharged m p .d3zg*fgfeu/.e2pp4u +c wu.c/ql qetal bar. The end of the metal bar farthest from the chucw//epf + uf.2 ulqqg cd. pzg.e*p43arged rod will be charged

  Sphere A carries a net positive charge, and sphere B is qrv8 4 n,fwtv6:cm.ts neutral. They are placed near each other on an insulated table. Sphere B is bri 64: vtm,sv8qn.ftrcw efly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivelsrde mtv9()b.p2tw k 1y?

  An originally neutral electroscope is briefly touched with a positively chargch6)dt (wl ./m6xer ofc 7d9pked glass rod. The ele6lo edx 9ptcw ./fdkm(h7c r)6ctroscope

  An originally neutral electroscope is grounded briefly whilea+ 9v gtb.(j3lr cc+pt a positively charged glass rod is held near it. After the glass rod is removed, the electrosl3 (rbt9cvg t+p .+cjacope

  A positive object toucu. e/g j5 t4::iufbycyhes a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, :yub /y:cug. e5 fti4jbut does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an 5,xb/l to m*4s9vg cb+bnq )y tcdo8h5insulated 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.q 4b+/o, bcn5b8xlt9d)hgmo yt 5s*vc 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 const40h h)vdd1ijxg4y -fr3. nbjb ant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. They6fisncc;n)c* 96 n xhvt +tl: first charge is larger i f6inty+c* 69:ctslxh; nv)ncn magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. T(bfe48* akgpo*jmxwkfevlfd- :9 9v5 hey are placed near each other on an insulated table. Which5feob4a-f( mlvd9*wxf* kp:vkej g98 statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force p/bf a8xqg;b(;d ,bcl. If the charges on both objects are doubled with no change in separation, the force betwex; ,qfbcbga8p bl/d(;en them

  Two charges are separated by a vx cml+-f3 otcrwd3+4 distance d and exert mutual attractive forces of F on each other. If the charges are sepac +tx4 fvod+3l -3rwcmrated by a distance of d/3, what are the new mutual forces?

  Two charged objects att)e4zjb pwa9 oheg4hx5f-g a7 -ract 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 betwb94ee7wa5-)hh g 4 -fjxpazo geen 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 distance ()0 k dkmtkvh.of 1.0 m. What happens to the magnitude of the force on the proton if a secondkv0kkt(. m )hd electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens thd 9n:wcjp9n f- +gvo4o the magnitude of the force on the first electron ifwgjv9d9nno4c+ :h-fp a second electron is placed next to the proton?

  An electron and a proton are separated by a d.lfybav;dp mtp;fme6*4 a h98istance of 1.0 m. What happens to the size of tv*;p bdmmft ;l ae89h 6.ayfp4he force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. f 4knouat *ark, n3 m7xoct8+j9nlb)(When a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic forkamrnbn , jf oua(*+x4lc8 3nt)9k7o tce 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 the centroid of an eik:bu+/9onkh ui 7dzd.ud++ aquilateral triangle. When a second charge of +Q is placed at one of the triangle's vebduo/zai+k9.+ :un+i dkd7uh rtices, an 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 followi o)5c*a7t ey2ubziho5ng is not a vector?

  At twice the distance from a point charge, the strd7+ya8hvc3durtzhst v++ /)gu ojn -0ength of the electric field

  Is it possible to have a zero electric field value between a negative a- ;7()x21*vdpnlwg d;wcuh1s av dngtnd positive charge along the line joinila - gs1dc);th*vnunxwd vg7(d1p2; wng the two charges?

  Is it possible to have a zero electric field value between two ppv pr ,l4xv0aysxgw506gk e0)ositive charges along the line joiy5aw v4ke 0,pl 6g)0gxxsvr0pning the two charges?

  Electric field lines near 15 vu+ekziuw( psitive point charges

  The electric field shown pps( sma pq +-/(ew2hy

  Can electric field lines interser5 h+hhx0mogi7 h g4(t u-5kdxct in free space?

  A solid block of metal in electry i tua:9ffk;f6s3x b+ostatic equilibrium is placed in a uniform electric f+6 9sixf;fkya:ft3buield. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal spherg 1/rv( 5yvqv1olwnlyc l 1-4be of equal diameters are each given the same charge, the electric field (E) midway between the center and the surfavcyo q45vl wrn b1y lv(g-l/11ce is

  A cubic block of aluminum rests on a wohe:yvj7 6g;l-i: uf nvoden table in a region where a uniform electric field is directed strvy6e :7-u;li :jfvnhg aight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic qm53(-dmf:nfwc r*f26rok gaequilibrium near an electric charge

  A positive point charge is enclosed in; ;za zy q3f))bya:ixe a hollow metallic sphere that is grounded. As compared to t)qbya xa:;e;iy3z) fz he case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertieztupkjyq- ,+b3 v mj)h 549mdls of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron isr9)sx0uqgqe2-9 jtp a $e = -1.6 \times 10^{-19} \; C$. 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 mC. How many more protons tha7 1 bt(x:s tye,*3+rouv njphdn electrons eph *xortjs 1+t udn:b(,y3 7vdoes this piece of plastic have?

  What is the charge on 1 kg of protoe q 8m fst0k5hba;mo41m;acstjg /03o:eh jc* ns?

  An atomic nucleus has a chac.ef ue,g04wsrge 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 ql td19y6zy a,x b1(21n.gikz/s rnqncm, have charge values of 2.0 and -4.0 mC, respectively. What is the zqzn9sbyl ia .gn1 q6d, nk1r(12tx y/magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between ejui r*ndxim ;(9zv: p qycla 7*53fc8them is 1.0 N. What is the magnitude of 5m :*i8anqvf7y (*;iep z x9ld jcucr3the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far accahsv0 d+ kt53 9lt3apart are they?

  The force between a c x* +-qcyi3shi8 wm miqy3-k5$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm (f 6yi 9t2fjk68n8ezvd4now bapart, experience a 1.0-N force. If they are moved to a new separation 6zff ijneo y8 dvb4( 682wtk9nof 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are 2)dai)mc lo7+ y8p1bh bu1bvu placed 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 direc8lpm2) ob1hai d+yb7uv c )ub1tion of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A 0e 41e w*1my.o pwytbncharge of +2.0 mC is placed at the origin, -2.0 m C to the ob4w 1yeyw1 0nemt* p.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 cap+ fynyv;6 taz w:4yd2g*a .located at the following 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 3.00-mCyfgdp*6y4zcvw a.n y2a:t +a; charge?

  A point charge of +Q is placed at th spqs(w: ncig 26u)r;re center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an eiqrns2 6grcp:(u; w s)lectrostatic 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 = -1.0 nC is at (0, 0.10 m); f6;r9 x/ dop- pibvui-Q3 = 5.0 nC is at (0, 0). ;9d6 uppri /ofxv-b i-What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, uk9c /vt)jt, 5agrr;j 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the dvu)rg t9tcaj , j/k;r5irection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verx1 6/uulfsw( j776bnj x e,bfatices of an equilateral triangle which measures 30 cm on a side. What is the magl6xjfnj/bu7, ( af1s6u xbwe 7nitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by c0n3ibtel.;on0 :tm k 3.0 m. At what point, on a line between the two charges, w o0:inn tte3l c;k0m.bould it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the oridkqyy(*f yo9 /6am gt/.nrso,gin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the ne/g k to/(m 9saq.fydno yr*6y,t force on it is zero?

  Charge +2q is placed at the os4;7(s gwvwq rrigin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the rv 4s(wgws7q; force on it is zero?

  A copper penny has a mass of 3.:i io28zdyor5rw + f/e0 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 attraction oqgd0 rp2.go((7hggclf a fixed proton some distance abovegd0g(2 c(po7gh. lr gq it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconxg7ya8 (hncbd bv1.eh 4,;mcaducting threads which are 30 cm long. Both are given identical c7g b hm1 ,(c8.nedy caxh4;vbaharges, and the electrostatic repulsion forces them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a ch3v ft /lcokxn*.v* pwc v2u*k:arge of +40e. What is the magnitude of the electric field at a distancex/pnc*t:3uvvkl f2c*vw . k*o of 1.0 m from the nucleus?

  What are the magnitude and direction of the electnx 1 *vynw: e+,jsn g*g5c/idtric field at a distance of 1.50 m from a 50.0-ng1n *ctwn jn*g: d+ iy,xe5/vsC charge?

  A 5.0-C charge is 10 i l5(x6em+zka ( 9mphcp7bd4sm from a small test charge. What is the magnitude of the electric field at thede4z p(a (s 5kxl6m9+hcb7p im location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directioqjo771+nb zr ro -gnwcgoo ))q()n yk3n of the electricqq )o( 3g)n )rz orb-7n+7gny1ojwock field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thu r3sfen, 6 j8yeqbvx78..auie force experience.7eenirb,8x j fy3a.q86vu sud by a 1.0 nC charge placed at the location of the test charge?

  Two point charges eachym6 .r;b1i ae) ap ,cxnu/d;kw have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric fieldbyn)iekc 1a/ ;,; p.6uar wmxd at a point midway between the two charges?

  A 5.0-mC charge is placed at the 07t)tdcai20 : nxrx1 1:c omiyx cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm marktcxo0it7m ar)x1xy n c1di:2:?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.1*kkndq fp x 4-kfxg;;0 mC charge is placed p*qx4-knfg;x ;f k1k dat the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of (:pjy 0k1gluru6 f v-f+3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of th0plffuj(- g 1y:u6 rvke electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Th.q* dlpwd 2yu* b+dm-fe last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the sdwp*+ f lquyddm*- b.2quare.

  Consider a square which is 1.0 m on a side. Charges are placet4z)k.qh aqf 7d 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 is the magnitude of the electric field at thk.) af7zt4hqq e square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a m-ox*jz* slz9 6o-hth uniform electric field. What is the magnitude of this electric f xo **o6jzthls9--mzhield?

  A particle with a charge of 4.dq/m1x)cr)9x kb si()hlkbt7xk :2z u0 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 0.120 g is (5-b1eq xl hrlplaced in an electric field of 6000 N/C pointing downward. What be-l 15rx qhl(charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of i+gf-c 99f4l/ tka lrn-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 -+ 4li/t9 rlkfan f9gcof the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.,f0+td 4en goa0 mC. What is the magnitude of the electric field 5.0 cm from the sphet a gdf4+o0en,re's surface?

  A metal sphere of radius 2.0 cm carripjczsu 1d whlfk:*6qcv+k2 );es a charge of 3.0 mC. What is the electric field 6.0 cm from the cente wj*;1fkd2u6q :lv )khs+cpczr of the sphere?