State the law of conservation yv ,jpjwjx,7 ,1b z.fxof electric charge.

  Is it possible for two n*fic8:w1he0y1hou*gv n; 2h2srire n egative charges to attract each other?

  Is it possible for a positive and a )wfv i; l- 0(f f*qdc3wube+agnegative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod a;m6kh, x c+vgxc 6x,vmhx+ck g;quires a positive charge and the silk

  A proton carries a

  The model of the atom show,1a xk,zzz .jfs a

  A neutral atom always ha)cv8z6n f q 6ioz8c9xas

  An atom has more electrons than protons. The ato7ka(oijju s:w2 -5nv1sfal p51twe (g m is

  Materials in which the electrons are bound very tightly to the nuclei are ret 1aazj) 5kr;ehtbktz; v(pu2)a :*xsferred to)5zpekz2x v*t ta bt; ua;rah1kj) s(: as

  Materials in which them 0 vuh+0ulko6ys1,ij electrons are bound very loosely to the nuclei and can move about freely within the mai y06kml j1o ,huvs+0uterial are referred to as

  A negatively charged rod is brought near one end of an uncharged met q6f(env h8umw: fv37tal bar. The ewvv7m(h qu 8tff3:6n end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B istxm56332 yg tc.*qi5e pskqs mf,g5mq neutral. They are placed near each other on6qm2kq te53g pxtm.5s q5gyfsci* 3 m, an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged 4v gsp.tlh-a/rod charge an electroscope positively?

  An originally neutral electrosco zxkvc1 os40bm6me6o-pe is briefly touched with a positively charged glm06o b1coeszkx4v6m -ass rod. The electroscope

  An originally neutral electroscope is grounded briefl8dln x 6oi d9p.bx8:tdy while a positively charged glass rod is held near it. After thi xb x88.6:lpdddt9 one glass rod is removed, the electroscope

  A positive object touches a neutra 3w z6k,+0exzce8sgr. xjdza-nq 1p(ei+hsf /l electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not tq(zg,e+kpxn1-a e +ess/djwirx80 3chzf.z 6ouch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neu-5mezw hr6ooc 4gxl8, tral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the mxe,-4 r5o z clh8wg6opath 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 ofs( c h(( kc b*qt.cbli*nbyt,6 the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are 2nnhbh6o jnb7 t u138r.s)yh tseparated by a distance d. The first charge is larger in magnitude thh7rbbo1h2 6jnuy ttn3. 8shn)an the second charge.

  Sphere A carries a net charge u 8..gh)ef tmwand sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the e8hu)f .g.e mwtlectrostatic force between them?

  Two charged objects attract each other with a certain force. If thesym*+9i mix9a charges on bii+ 99*am smxyoth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distanc- s /:uozxnr bv6l:-gje d and exert mutual attractive forces of F on6/v -s: g:-zbol njuxr each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. ck7 xyo g9ux6+What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers i gxouy+9x kc76s 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 j0ia 3n+ddhhoow d agb/6y0 *4m. What happens to the magnitude of the force on the proton if a second elect4i/y*d60wjh o +bodndga0 ha3 ron is placed next to the first electron?

  An electron and a protovfqyz-x2djn7 u r6) -en are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second- dn z6rqjuev)2x 7y-f electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m.*9 huuabb*d(5 si1eo ,cpjjv5 What happens to the size of the force on the proton if the electron h, o sjip1 j9avu5c*d( 5*ubebis moved 0.50 m closer to the proton?

  A point charge of +Q ier ktbr:3jx(0. awxd. s placed 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 charges o0xwer d(xb. :j3kr.t af -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 equilateral4fr r8 1nq,rh 1pyse)d triangle. When a second charge of +Q is placed at one of the triangle's vertic1)1s q,f 8reh4drnpyres, 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 is notmrz1t( 9k37kzt b2 q1mehuyn) a vector?

  At twice the distance from a point charge, the s2fgv+4qcnj2uo s: )7y 9rl txe0yi;qf trength of the electric field

  Is it possible to have a zero electric field valueovt/ vijq,rtx;.3ab,jkdxk7ha- 85i between a negative and positive charge i vjx .biko8 35,7tt /-q,rvjah;adxk along the line joining the two charges?

  Is it possible to have a ze 5a8ef,kx bojpwp ,3)pj8of5f ro electric field value between two positive charges along the line joining the twoojj,3wpf8 85op )5 fb,eafxkp charges?

  Electric field lines near psitive p3wc q /i,3spbsoint charges

  The electric field sh4q4 mrx0gdda /own

  Can electric field line/ lkv *rx8zt0ps intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in :qs+vcpzfvk -a* (,zha uniform electric field. Give a statement concerning the electric field in thev,vkqc+p *h: fa( -zzs block's interior.

  If a solid metal sphere and a hollow metal sphere gz4k56g sh7/bfbg s2. ahpbh;of equal diameters are each given the same charge, the electric field (E) midway between the center and the surfz47gasfg25 b6.; /bgkhh shpbace is

  A cubic block of aluminum rests on a wooden table in a region where a unif jv-zzp bfehl/,*r1p*de4 kw gj0fd69orm electric field is directed straight upward. What can be said concerning tzekvrldp* ,fj ezj-4/pwdbg*61h 9f 0he charge on the block's top surface?

  If a conductor is in electrostatic equilibriu as0gt/bk.uq*1 5c ri;bofhv+m near an electric charge

  A positive point charge is enclosed in a hollow metallil,ioc uj2+9kic sphere that is grounded. As compared t ,i9kocj2 liu+o the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in ssyf m 0gfe1cejuw5d15o;p 2j-tatic equilibrium.

State Gauss's law.

  The charge carried by one electufdr1x o *o8sd+9 bq7s4g4g ovron 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 charge of +2.00 mC4xv.7 g gvnvqpf/q15d . How many more protons than electrons does this piec.g1 vv4q/5 xp7nfgvqde of plastic have?

  What is the charge on 1 )hp uu80of :45 fkno 1mkb1rixvk)10zj:njpukg of protons?

  An atomic nucleus has a chargeevai8 -hxw. 6v8j) zin 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,o0b6 ja mreyxg(*57vb have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between th 5by( o vgjbm0*6aex7rem?

  A 1.0-C charge is 15 m from a second charge, and the force between themc4n ue 1m0v)m8p7nm nt is 1.0 N. What is the magnitude of the m4c n)mm v7nt p1e08unsecond charge?

  Two 1.0-C charges have a forceq/u gh-i:b r.;*ro vvx between them of 1.0 N. How far apart are they?

  The force between a :3utf3 (cmmec(*)s vhc)auuy $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience vy;sc-4r hby/d48c sy a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is-srd c/4y;vcys y4bh8 the electric force between them?

  Three identical point charges of 2.0 mC are plo lq0bv11dcf*(tf l(jaced 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 *ofvdl cb qlt(1fj01(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 iu 9k+n7y ;q oz i.mwcvvm43s)zs placed at the 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 acts on the charge at the origw.z7nk9v uosm;vzmi +3)c 4 yqin?

  Three point charges are located at the following positions: qm/g 39 2mfy :hwuz5agQ1 = 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 ayfhw 95 gzm/q3:2mguthe 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 po73t n7qd-p1dkp tvnp6int charge of -Q is placed at the upper-left cornernt3d61qp ptp-dnv k 77. 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 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 = 5.0 se 7hrea 3(g xqd74w9cnC is at (0, 0). What is the magnitude of the net forx4w7geesh 9ac rq(d73ce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.102egl d0zp70oqk:+aiekzx2h0t 7q oh j,s-m*p m); Q3 = 5.0 nC is at s2zgempedzh 0ip+ ol ,ao2*tq-k7kjx0h:07q(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 vertices of an * b i 4o;*sb7 (.slz7pjqekmpdequilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force ib ljs(ep k7s4b .7zodp*;mq* which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by g,op 8 mv3wk+r32pdu;y j0gao3.0 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 32pw 3mug0y; kg+oop,jad vr8 on it would be zero?

  A +3.0-C charge is at theu jlsewp 1./h37swta + origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge ww3a.j t7+hsel/pu1s be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whegg,ge 1;wc en6re can a tw1 ec,6gn; geghird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total hr8wz le1w,ispbiw:8b(t ,c. 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 at6elxo, dl*3.zp0 j(;jsre jkxtraction of a fixed proton some distance a r 0s.eejjk,*o(6djlzxx p3;l bove it. How far above the electron is the proton?

  Two 0.20-g metal spheres a0 (:mzo grbc,ore hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces th0mbg o( cozr:,em apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. Wha ,6n y(efp0via4lb hi8t is the magnitude of the electric field at a distance of 1.0 m from the nucleus?vifp8 l,ha ey 64bin(0

  What are the magnitude and direction of the electric field at a distance1b sfg7dxb,4q of 1.50 m fr,db fgs7x b14qom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a sa dzc -ckzl8h 75bldfkeb,m6;/02nw d mall test charge. What is the magnitude of the electric field at the lo 5hea/nml d2z 7cwfbkd zc-d0bk68,l;cation of the test charge?

  A 5.0-C charge is 10 m from a sm8-6s pb yyjskun:em7fw;n ,5yb ed8v/all test charge. What is the direction of the electric f 8:fy/e6se ns;y5kupbjb7 w,8yd-v nmield?

  A 5.0-C charge is 10 m from a small test chahc hf (kw+x.qyi+r3;drge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chc(kdf.qih3+hwr ;+y xarge?

  Two point charges each have a value of 3.0 C and are separated by a distanbiz f:viad6754v +f crnhp0x8rjwf3 7ce of 4.0 m. What is the electric field at a point midway between the two 453 vj6rf:+ h78fadxwir bvpcf0izn 7 charges?

  A 5.0-mC charge is placed at:4 s tzfpc8t;a the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Wha8za s4tp;cf:tt is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick andk u;(q:dbct8b7 *fs yk a -4.0 mC charge is placed at the 50 cm mark. At whac 8t*;7(kdkb:byqf ust 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 placed at x = 0 axy* o2hhtw.df;kj sw28)dj 8vnd x = 0.20 m. What is the magnitude of the electric field at the point midway bettvyj82 wd*.dj x28 hfh;w)sok ween them?

  Three 3.0 mC charges are at the threho db4mol w:2r1rungnaxua(t() +r 09e corners of a square of side 0.50 m. The lmxtu )urwalrb angh20dn (94o:(r1o+ast corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square who t4j g,:wmq qobs7+s1ich 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);tg1mos : q7w jsq4o+b, +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 inp cen+v1 o18ic a uniform electric field. What is c voeipcn+8 11the magnitude of this electric field?

  A particle with a charge of ,lt2kiq7 hx i txsq0/.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 0.120 g is placed in an electric field of 6000 Nou01c (uzgibtj5nn dri1/brf ++/f8u/C pointing downward. What charge must be placed8ri0tn/ 11 +jrbdouugb /c n fz5fiu(+ on the ball for it to be suspended?

  A foam ball of mass 0.150 g enm;pq 9y-cxyd d t t18c6nrzidupy0p(45g2; carries a charge of -2.00 nC. The ball is placed inside a uniform electric fiel8(pgq4zr;;pinct 9yeyu-d yd mptc 6dn125 0x d, 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. What ism*;3 bb-fobqr d(yv (s the magnitude of the electric field 5.0 cm fs vb ;q-r(d (bbmy3of*rom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 eayq,vok*b.; mC. What is the electric field 6.0 cm from the center of the sphe o; .kvb*e,qayre?