State the law of cono pt-d8 ct4*eyservation of electric charge.

  Is it possible for two negative chary e(i.tllno 7hj m r)0;kil(i+f(is.mges to attract each other?

  Is it possible for a positive and a negative -.i8kq azs u/ lsf/bj:charge to attract each other?

  A glass rod is rubbed with a piece of silk. During th5f 8wv+q tn*exe process the glass rod acquires ft+wx* e8qv5n a positive charge and the silk

  A proton carries a

  The model of the atom show5vze0 6ts.jmxs a

  A neutral atom always ha v vj5u9n*okx*s

  An atom has more electrons than protodza;6hk/*9n5 mepbach*lgu6 ns. The atom is

  Materials in which the electrons are bound vy1vbq8v o /0rxe. jw*ximc4-wery tightly to the nuclei are referred e*.v0 vr wybc8ixqj o 14/-xmwto as

  Materials in which the electrons am.s1 y+(hq9riwbs q8 pre bound very loosely to the nuclei and can move about freely within the material are referred to aqis9h.w8mpy(rq1+ bs s

  A negatively charged rod is brought near one end of 2 fh5)n)ri uw c3hmtvppqh7k+d *bs;-an uncharged metal bar. The end of the metal bar farthest from the charged rod wi72 hqrh+wb ;upksvmtpd5 -)hni )3f*cll be charged

  Sphere A carries a net positive charge, and sphere B is n:+go hhe up6pej1z 55ceutral. They are placed near each other on an insulated 5o e:hp1zgc+jh5ep6u table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positiq2 lxm)n+wz qaac n9 vf9.me47vely?

  An originally neutral electroscope is briefly touched with a p0fv ua-6gw paja3zu5 /ositively charged glass rod. The el- u g 3w0u6jazfpaa/5vectroscope

  An originally neutral electrog 3 gu5nzwpyxvm, 2;*ti. rgo7scope is grounded briefly while a positively charged glass rod is held near it. After the ypigmg, 5zn3u*twv27g ox;r. glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separatyq xa)5.cz0oyiw 28af e. Then a negative object is brought near the electroscope, butqza wic o)yfax.85y2 0 does not touch it. What happens to the leaves?

  A large negatively charged ob+z mmatejq -) p90ows(ject is placed on an insulated 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. At no time does either ball touch the negative object. What iseo (- tpjz0sq+m9m)wa the final charge on each ball?

  Charge is

  What are the units of the1y8w1 digqsi -sc 4:le Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. c9ofqhgh(tn3.0 xh,x 8 3cqmrThe first charge is larger in magnitude than the senqxmgc0h(39 f,h hxcq8.ot 3rcond charge.

  Sphere A carries a net charge and .w0ccdbtlc ;lk e- )s/sphere B is neutral. They are placed near each other on an insulated table. Which stat-ct)c0s ;/ lce kbw.dlement best describes the electrostatic force between them?

  Two charged objects attract each other with a certaiyqlw o( 4,kz;wn force. If the charges on both objects are doubled with no change in separation, the f,ywkq l ;4wz(oorce between them

  Two charges are separated by a distance d and exert mutuai,vtti -w4l: dpndm4*wi3;v vl attractive forces of F on each other. If the charges are separated by a distance odvt4mwt4;ii v,d- vi:3lpw *nf d/3, what are the new mutual forces?

  Two charged objects attract each o b* pkim3qz80lther with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distaz30k m*8bil pqnce between 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 of 1.0 m. b21x:ds1y z0la0zdykz8x*z s What happens to the magnitude of the force on the proton if 8zys0a1*1 szzk2z:xld yb xd0a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 mtowda6 ys5im83p0f 8c . What happens to the magnitude of the forwf8 d 8ma6p035tisocyce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Wacm1*drgh5jl1 dv5 ;-nwya s9 hat happens to the size of the foc1yn v*rg9 mdsj51dawh ;5 al-rce 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. When a second0t39wzc808b mxenodc point charge of xtec8o30zcb 9n mw 0d8-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 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 cent b2vun j5/f5kuroid 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 of the force that acts on the center charge due to a third charge of +Q placed at vkb52uf /u5jnone of the other vertices?

  Which of the followil:8xf1p4 k; +oxrt fecng is not a vector?

  At twice the distance qyuh7/g z q4 y2r0cn6:xmre +ofrom a point charge, the strength of the electric field

  Is it possible to have a zero electric field value betweenel.x l.le)zy0 c1 kha9 a negative and positive chark)l9ehey x azl1.c.0lge along the line joining the two charges?

  Is it possible to have a zer2db 9v: -e+qoa3ifr kco electric field value between two positive charges along the line joining the two chadq+f2:k rae 3i9cobv -rges?

  Electric field lines il. gl8 9dzws;near psitive point charges

  The electric field show+,ft4 ,8f zm6tsms vhn4qts- sn

  Can electric field lines intersect b+sg d*09yu bfabz0 *zin free space?

  A solid block of metal in electrostatic equilibrium is pla* )prrlp:a 4si/ vg-keced in a uniform electric field. Give a statement concerning the electric 4pe */pgvrsia r):l-kfield in the block's interior.

  If a solid metal sphere +ks69+wa ragrv5zn 5cand a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway betwee9 ws+v6 kr 5crnag+az5n the center and the surface is

  A cubic block of aluminum rests on a wooden table in a ohf16u)x/ pib ;juua9tqp 37 zregion where a uniform electric field is directed straight upward. Whu ;3hu/o ixuq )p96tfzb7jp1a at can be said concerning the charge on the block's top surface?

  If a conductor is in elecmw-paz5bio0s7a l-,g trostatic equilibrium near an electric charge

  A positive point charge is enclose-xpmk;v h j9o+d in a hollow metallic sphere that is grounded. As compared to the case wi+ k j-xmpho;9vthout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in sta df8g0kz( y+uutic equilibrium.

State Gauss's law.

  The charge carried by one electron i9 .(fgb 8 0s44wgm,zfh mhkvebs $e = -1.6 \times 10^{-19} \; C$. 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 thafoysb9.h+* wszss1) zn electrons does this pi9sy) sf.1zbshswz+ o*ece of plastic have?

  What is the charge on4 9drqvzc 1vu7sxb::f 1 kg of protons?

  An atomic nucleus has a charge o /jsi+por* a57*xkowdjhz:p9 f $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cmz/f n3 pv+o-gn nfcro0yvj 4(., have charge values of 2.0 and -4.0 mC, respectively. What is the 3o4 nj/ffvn -.nr+ czoy0pvg(magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between t,eerr-v ,v p/(brhtu9 hem is 1.0 N. What is the magnitude,/uet,pe v( 9rvrbrh- of the second charge?

  Two 1.0-C charges have a force between them of 1.2h aq1opdrp8 )0 N. How far apart are they?

  The force between a rp n.h5e owvxws(ppcs oz27/m*-46k(1mj n sl $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apartpq:f+7 6hdnuwjm6;t k8yf1k t, experience a 1.0-N force. If they are moved to a new sepakmjpf 6t +yf; ut1nq7h 86dk:wration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on t35 l(gpk/ydye4p 7,itjc yluu0 + r6pkhe x-axis. The first charge is at the origin, the second toc/uel7p 0i, 5rykyjdg4ytu+(6k3lpp 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 ox *x6cx1l3y auf +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, uxlycx3*ax6 1 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 following positions: Q1 nh-)6+aen cvi ea)sa-8sd6ly = 2.00 mC at x = 1.00 m; Q2 = 3.00 mCs6av8- y)c+6)shea de-il ann at x = 0; Q3 = -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 square, and a sw b7+sj,it l8second 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.ji8w lssb t,7+ 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 (k qtvrkoirxzry 6u4ti-xd0* um7;2*= 5.0 nC is at (0, 0). What is the magnitude of the net force oi0duxzi4t2y x * (t*-mkroqv6 ;kr7urn 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 = 5.0 nC is at3t lcc:y3ya. j (0, 0). a tyyc33:.lj c 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 anhuw645mp5m m-;agsk9p tr.fe equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts o upf mhkwg6r;aem5m49.s p-t5 n any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whatf/uu oantyi2o t+,73 s point, on a line between the two charges, would 2aoo u nits7/3,+ufyt 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 origin and a +9.0-C charge is at x = 4.0 m.,y3q lsfj 7.oc *var9i Where on the x-axis can a thirj vl.ofs,93 i*y7 aqrcd charge be placed so the net force on it is zero?

  Charge +2q is placed eph3r jl-9how.az6v yw0 r,1u at the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be plac,0 6eor 91wuahlph v.zr3j w-yed so that the force on it is zero?

  A copper penny has a mass of 32;pp8k-v90xyigu apeg* j1ok .0 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/t3 e95/r zdojcq ps24cdi5u l force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the prot uo 4d5tsr/53lp9j2c/ qezcidon?

  Two 0.20-g metal spheres are hung from a common;- twac)vi/.0j4 i,mm* qqk b,ve zpxz point by nonconducting threads which are 30 cm long. Botvz.qc4 vtp)b / m,q ;-* kjxm0i,zaiewh are given identical charges, 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 hasw4.cxkw6l 1;g ;cvk8vlu( rh*r* bbxc uh .k6w a charge of +40e. What is the magnitude of the electric field at a distabv l krk(1u. h6h;*k4.cw; x*wgblvrcc6uw8xnce of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field om79+b 6bwnl: wq 0.hpxtm3dqat a distance of 1.50 m from a 50.0-.0 d6wwbopm3lt7qb +m9qn:hx nC charge?

  A 5.0-C charge is 10 m from a small zp w,pig)xt.+ test charge. What is the magnitude of the electric field at the lo.gi)wx t,ppz+cation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the d bw)w2l-tjh; (lpvgqdfs h1 +2irection of the electrih1jpqdb; )2-2wsghfl vlw(+ tc field?

  A 5.0-C charge is 10 m from a eouk(yo*3kpc.-dts,45d lx osmall test charge. What is the magnitude of the force to,-u*k .p4d3(oy5l oscd xkeexperienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a v5vyx. xjx.u+hxkv1ms- er0 i*alue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between thx0x1+jsx5mh-iy.v e u.xrv *ke two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0e)n bgkcwqw1 6)m1 /j ycg-2ph),j uxbxlp* 2u mC charge is placed at the 50 cmyjx1mwxu ), 6lubq/bw)eng2g*h )kp- 1cjcp2 mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of aos r1gy r3dz;5 meter stick and a -4.0 mC charge is placed at z35rd sy1o rg;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 placed at x = 0 and x = 0.20 m. 2kvoe 7gfp 8 5j)psjh0What is the magnitude ofgh jkp )jvfe0s85po 72 the electric field at the point midway between them?

  Three 3.0 mC charges are at the thkvrknl j2 + u/lf6e/s/ree corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of tlkv e6l/+2u/ ks rfj/nhe square.

  Consider a square which is 1.0 m on a side. Charges are placew hcod8hd d)/0d 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/hod8) d0dwhc magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 e k,-8x ppcbo0mC when it is placed in a uniform electric field. What is the magnitude of this ec- obxk p0,e8plectric field?

  A particle with a charge of 4.0 mC has a masx* v8+irk.bo 5zaht/wk r;0mm7f7e ajs 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 ofo4+j 92oxjb kb 6000 N/C pointing downward. What charge must be placed on the x b+94ob2 ojkjball for it to be suspended?

  A foam ball of mass 0.150 g carries i,l*k-zs owabrft6 w kp. 8na7o0xl8 (a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspe fl-rx80,w6okizn (a *bowa7. sk8pl tnded 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. qvcrz:87ziphn;l w 55 What is the magnitude of tnlvzwhc7qzp 5 i5:8;rhe electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 n- f,uuy2+r nq/zrb d4q)q*xsmC. What is the electric field 6 4bqr/- z fuyqrud*xns,n)2 +q.0 cm from the center of the sphere?