State the law of conservation o ydcevxp4 ( uahky;gt2 3;ai01f electric charge.

  Is it possible for two negative charges to adi6ki:qx:x . ettract each other?

  Is it possible for a poe;j , rb;up ;f.m3o,aci;kn ztcqc+b5sitive and a negative charge to attract each other?

  A glass rod is rubbed wid7 0ldb7ab5z2xvc4+(q mr o fy )bwbe6th a piece of silk. During the process the glass rod acquires a posiz l rb720bdx)wbqf a5yvbd4e+om (7c6tive charge and the silk

  A proton carries a

  The model of the atom shsx d 8+gazhq:t,w d1)r;crm- sows a

  A neutral atom alway(di ;tya(,tsk19qcm ls has

  An atom has more electrons th pul(o :w8xy:kan protons. The atom is

  Materials in which the elg nhfn)p0)lf,vf+ci(i)a) 2 f y6qb coectrons are bound very tightly to the nuclei are referred tov(o hlg 2nq+ 6 0p aby)))ff)ffciin,c as

  Materials in which the electrons are bound very loosely to the nuclei a9pisnf8x0a 1h nd can move about freely within0f9a s 18xpinh the material are referred to as

  A negatively charged rod is brought nkwac-h 701wxgltg8l8t 4qx7 7 nzrso7ear one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod 8-wn 7tcatqxwkl0g r1sh8 77xzo4l7 g will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They arezxzc35 f9r0x(t wn* ng placed near each other on an insulated table. Sphere B is briefly touched with zntr*xz5(wn90x 3gfca wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positiveli/xxgtziww 2 rz, +vy +k7w4n,bo;: kfy?

  An originally neutral electroscope is briefly touched with a posith+q t shg(,q1 .dcrc(2 f-kpyrively charged gl2 -prhgt,fk (+c1d ry(.hqsc qass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively u*dbca0gj mf.sn(5 9c6nv 4s zcharged glass rod is held near it. After the glass(*v0u5j zand96s4. mn cs bgfc rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves b0t2xc )x; fpauph(.f p:cs9useparate. Then a neg;f2 pxthx pbp .scu)0u9 ca:f(ative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated wi4q h-b 649jc+ te yi;1 h,fwlp.ozkltable. A neutral metallic ball rolls straig lk wify4pjz+ hhqoict. ,1-4 6e;wlb9ht 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 object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constant4co w7kpexi l g,t2-vap n*7x0 $k$, which appears in Coulomb's law?

  Two charged objects are separated cb7e35au ) iebby a distance d. The first charge is larger in magnitude than the su e3c abie75)becond charge.

  Sphere A carries a net charge and srj;8au ,ru1 is18sson phere B is neutral. They are placed near each other on an insulated table. Which statement best describes the u r1ia ;1r,s8nssjou 8electrostatic force between them?

  Two charged objects attract each other with a certainsh-ldkl4gx; h()me1a- r tbc7 force. If the charges on both objects arrgh;7st)4al-k(bl 1 hc-emdx e doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual 3uqdp z/ o(oz,ai36ujattractive forces of ,zu3o/ uzj 3aqi dp6(oF on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attra wmr(ha(0v1ivy+x/jw2y b ua t f/5k.oct 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 centers is reduced to one-fourth its original value? The form1y fw+a(a (u.5yovvb twji2hr/kx/0 ce is now equal to

  An electron and a proton af k,lk*z/m*w *yu13;swhxgj are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is p g,*jk*u wm;s lazwh3k*x1fy/laced next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Wh /cz -98fhyjcyat happens to the magnitude of the force on the first elect yz/-f9 jcych8ron if a second electron is placed next to the proton?

  An electron and a proton aa5pwk d(*.(/erlj lma re separated 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 closejakl p /a m5e(w(.rd*lr to the proton?

  A point charge of +Q is placedi 8 ay/zv7rt8z at the center of 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 r 8y8iavz tz7/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 equilateral tj8xlh9pu+p55pym 1 p priangle. When a second charge o h85m xppjyp+ lupp915f +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 charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following iw q/ tgmz45n4is not a vector?

  At twice the distance from a point charge, the strength on1bl )e88hnyg f the electric field

  Is it possible to have a zero electric field value between a negative and posiimxa2d jiq*a rjsy/r3, r3 0z9tive charge along the line joining the two cha, /ji rm9x qrads*aj2yi3zr3 0rges?

  Is it possible to have a zero electric field value vinrr04u yv4 8between two positive charges along th r4yv8vurni 40e line joining the two charges?

  Electric field lines near psitive point charfxqi ;w7 sha31ges

  The electric field shownd8zg 02d kkiedv/1w.n

  Can electric field lines intehe+t-n p /stfxce/f )bq-16kirsect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform electym j:*(d/06kxa ta ozpa xs*n4ric fiep0a smn/tkxoyza(* *jdx 4:6ald. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphoi4n( .07js)ttw oqog ere of equal diameters are each given the same charge, the elejowsot(4 n .tq70i og)ctric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region gf2.j/fj4pdm u irx 4;lio-m0 where a uniform electric field is directed straight upward. What can be said concernuf-l/j o4 dr x.4m j02iifg;mping the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an exp9w tcjiam6n7 p +24 :yuwtz7lectric charge

  A positive point charge is enclosed in a hollow metallic sphere thatn 7jdssr(x/m4xdk+x9 is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollo snxxdx/+k9(4dmjr 7sw sphere has

State three properties of cia+ly9+) w:c;apifpr onductors in static equilibrium.

State Gauss's law.

  The charge carried bc33.0 seja4o e5p7 mk(qeoowkm-zbj6 y one 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+y3hvrc f6x *v a net charge of +2.00 mC. How many more protons than electron*x6 vcrfvy h+3s does this piece of plastic have?

  What is the charge on 1 kg of pr w no60(fuynb5at )so;otons?

  An atomic nucleus has a chn kn+ca;8*xpd arge 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, hi j/ski.a gt3j939a1ni3trr zave charge values of 2.0 and -4.0 mC, respectively. What n 9gai.3/sjrz3ii1 9j3ttkra 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 them is 1 ;6ej i s6eekyydo5668 yrnd13rfuk g3.0 N. What is the magnitude of yye6kfe ei8n6ok3gd63 5sdyj ;6u 1rrthe second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far 9e)k u3l(qpinic ,t:japart are they?

  The force between a dx;*e; oc9rb 8 eyrhija2*f4 5prild7$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, ih k-ts p231y1ye 1tk us9nbac:nitially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, wtyc9t:y23 uk1sh a-sepn1k b1hat is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firsf j xby-:5t8 m779r8pdkehg6zx br9wnt charge is at the origin, the second to the right at x = 50 cm, and the third is axbjwzhmy f-7btkn6 r9:x r7d98p 5ge8t 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 :7ba2j9a e)dp qypahs+0 k -vfthe origin, -2.0 m C to the right at x = 50 cm, avhjys+ paafd:0b -2qpk) ae7 9nd +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 following positions: Q1 = 2zlc+0g f*6pms h3rl3fdz z;2x.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 l326*lm3x pz0 zrczgh;f+sd f on the 3.00-mC charge?

  A point charge of +Q dty 05dy2l: pq4oi3hu is placed at the center of a square, 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 cl0y4y u :5ipdqot3 d2hharge 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); Q3 ;6j0 /ka-l rwzgvz:zm = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chargelkz ;v-a0zrgm6 :zw j/?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10-8sywk8clff nr1 na*6 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net f8nc k*-w18s n6l rafyforce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equil uv17kl5s4s kf4g; yfs ,6eayxateral triangle which measures 30 cm on a side. What is the magnitude of the electrostati65ky ,sg7kx y414fauslefsv; c force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3 si,mp,jgy2 )1phdkf- .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 for, 1i-2)hpd,pygjk mfsce acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4sy 2ngiukalsr bo805d85y /a;.0 m. Where on the x-axis can a third charge be plab885sog2 sl5 iarn0ay/dy;k uced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed a-*qb.1s)m uz ds)xt(ocg ke3 kt x = 2a. Where can a third positive charge +q be placed so that the force on it ibm-ut1ksq ek)3zgs d)cx*o (. s zero?

  A copper penny has a mass of 3.0 g. A total o ktr+c2m u+zfz7i /*hpf $4.0 \times 10^{12} \; electrons$ 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 agas;0+w q+7 d42d zoqkn3m zzzehinst the force of gravity by the attraction of a fixed prown+qs0z4qd z3km; eo27+zd zh ton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres a lpz2dc.q2 +henwxd.nb*/0yw re 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 uwq.ch/l22nwd p.+xdez0 n*y bntil 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 0 yk,: xw:4viopwaks)of the electric field at a distance of 1.0 m from wa:0v s,wk)o4piyxk :the nucleus?

  What are the magnitude and directi 9nyzzqmr;57fwfw.7efq *dq01 vd .,- xhml fnon of the electric field at a distance of 1.50 m from a * 1-vf,.e.ydfnhmwfw qq9m qz;znl7frd570x 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test cbnxh2ph+5ye lq6 u sgd78sx/ :harge. What is the magnitude of the electric field at the locat+se: uhdxhbp slxng/y27658qion of the test charge?

  A 5.0-C charge is 10 m from a small test charge. wf;6 ysx+.asqgxeg h .ggs 8uc3.6gf8 What is the direction of the electric field..x3f6.hs f sw6ugec+xg8ygq gas;g 8 ?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of theg.jd ceecf+ 6+ force experienced by a 1.0 nC charge placed at the location of the test cha+6fc c e.dg+jerge?

  Two point charges ea rv nz6;h.ajsnm083lp hl91gkch have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at 9p1lhv3;06z klan.gmnjs8r ha point midway between the two charges?

  A 5.0-mC charge is placi dl//bzw *8fced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm8l i dc*f/bz/w 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 s2uzxvkyyet1cs,79ld d 57z7 hb / d9eptick and a -4.0 mC charge is placed at the 1ed,slc57z9x9up 72y/hdbkt ydvz7e 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 uc lcc f1ve75/and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the eleccue7 5cv/l1cf tric field at the point midway between them?

  Three 3.0 mC charges are w wh-.lio:u52s; an9k hrtcn,at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC chcnl- t w 9h.w,hki;ans :2ou5rarge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges 3qlrnz+m ggd(ww;f k7) q72leare placed at the corners of the square as followlmq) 7zwql72dwnkrg3g e+ f;(s: +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 the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform electwynf8 5 ,fwg;tric fiet5;g, f8yfnww ld. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mCg+l 7vesrrrkjy) 0-byo* :qu/ 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 mas5qcpq +e /p+*t s*yuqbs 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspendedq *bpyspe/uq*+ cqt+ 5?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. T3i kb+lpcp0v3t2cr4dvu +ta4he ball is placed inside a uniform electric field, and is suspended against the force of gravitypuk3vr2c3+4p+i 04t vdt cbla . What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm s 1* lwlj*v s rj1,k3lnhg8qu8carries a charge of +2.0 mC. What is the magnitude of*1r jl,8 ksv3nw*q1u sgljl8 h the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a 1jay8rab 40et charge of 3.0 mC. What is the electric field 6. 4 jer108baayt0 cm from the center of the sphere?