State the law of conservation of electric charg gr jv3-4t8tkpzs6n q3e.

  Is it possible for two negative charges to attract each vwwdq+4qnu (rh,iizot38.7fo1. kgp v y5iy- other?

  Is it possible for a positive and a uevxkk/g8u 0+1c gk; lnegative charge to attract each other?

  A glass rod is rubbed with1u ll8j uj;cdw.cfv,) a piece of silk. During the process the glass rod acquires) l ;.juw1c,8l dfjuvc a positive charge and the silk

  A proton carries a

  The model of the atom shwy7/h/5w/bkaob i *shows a

  A neutral atom always hai1dg *wpev/ d1;bg(q is

  An atom has more electrons than protons. The atypzd 29l;pz8 bk6ac* som is

  Materials in which the electrons are bound very tightly to the nuclei are referr) nwjl:;v e;6muwr)fs 2ihq )ced to e)2)hqucm;6 j s;nl irfwwv):as

  Materials in which the electrons are b2cxl-(-+ctesxjxlq 3ybv l5(ound very loosely to the nuclei and can move about freely wicx t3yqj-(-lc(5 bls e2x+ lvxthin the material are referred to as

  A negatively charged rod is brought near o/ dizy6oh z c6.ke4bx;ne end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will beid/b. ho;6cz4yx 6zke charged

  Sphere A carries a net positive charge, and sphere B is neutral. Theym ostrol,9 n49 are placed near each other on an insulated table. Spom4s,9o9lrn there B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrosco zy-tfvk)l/cm/m7 s/ ype positively?

  An originally neutral electroscope is briefly touchil/f3zv87fdcb2g0 u +k c5bored with a positively charged glass rod. Tbdi+kv0rzf 8g o75f32c lcb /uhe electroscope

  An originally neutral electroscope is groundedyofo(h x u8v)+ briefly while a positively charged glass rod is held near it. After the glass rod is r)fo8vohx (+uyemoved, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. 6-x z) 2q(wfbmqjz8onThen a negative object is brought near the electroscope, but wn)86o z fx2-bqq z(jmdoes not touch it. What happens to the leaves?

  A large negatively ch-qo hrf*r7zt dgr /,3xarged object 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 theo xrt,z/qh-r rfd*73g negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb col-/xsfphc y u2kz3:h)vcl0 -enstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largerib 1r/(vpr2 jdawfml0mcmgl w4o ;-,9 in magnitude thang-wc(b r mrpf0 a/w;1 ,29dommvlilj4 the second charge.

  Sphere A carries a net charge and sphere B is neutral. They aerp,r kv/ai;) r 72p0n:mrlt are placed near each other on an insulated table. Which statement best describes the electrostatic fap m0pav;i)n/:7 ,k e2r trlrrorce between them?

  Two charged objects attract each other with a certain force.bp8w0cjso83 4c ukfpo 0 2jns. If the charges on bp4.0p3oon2b f 8scw uc08s jkjoth objects are doubled with no change in separation, the force between them

  Two charges are separated by a di2u,-na rikyb8stance d and exert mutual attractive forces of F on each other. ,na ir8ubky2- 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. What happend;8odd*.phz b eseg;.s to the force between them if one charge is doubled, the other charge is tripled, anddhes.;d.g b 8ze* pd;o the separation distance 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 distqj0lln ne ;u01p(0h vpance of 1.0 m. What happens to the p ;0nv jnpe (q1hll00umagnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated b :mbu -a(+bfxd k.pc9by a distance of 1.0 m. What happens to the magnitude of the forakmb(-xbuc dp b+9.:f ce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are sepa p:7o:7 mdykvod k /,t0wfx;barated 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 closer to the promwk:kbd , td7/xoap0y : v;f7oton?

  A point charge of +Q is placed at the center of a square. When a second p9eb96:l)olvpigp h2 h oint charge of -Q is placed at one of the square's corners, it is observed that an electro:o)2hl69pg h pbv9ielstatic 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 centroid of an equilateral triangle. Whenuwdnmlkl;c z h*9+ *:b a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N actsb9 dz*n*wllm: hck;+u 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 followinxnmd ir99.qbus;p/fjt.zpu+ p2 *bv. g is not a vector?

  At twice the distance from a point charge, th.bs4r iuoy.+i6y m lw2e strength of the electric field

  Is it possible to have a zero electric field value between a negat9 hxa pk+g.)rnjj68u jive and positive charg)u.+ jhk 6ar8 gjn9jxpe along the line joining the two charges?

  Is it possible to have a zero ev4+n:l*by u8 sfr kt(ulectric field value between two positive charges along the line joinin nryk stb *v4u8l+:fu(g the two charges?

  Electric field lines near psitive point ch jvxj,k4 ec o6v8 doe(+s)0gmg/gxae7arges

  The electric field shown )5pog9zps ; yv

  Can electric field lines intersect in frs9)9 jjn*u : 1 otov7;3*mpjvynu3 o o5vbppoxee space?

  A solid block of metal in electrostatic equilibrium is placed in a unn7l s, -exl/mfiform electric field. Give a statement/lfm -,xs l7en concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are ed1 wnv ,.2rsoqach given the nrwoqv .1,sd 2same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden taeulgrr5 . h4;lble in a region where a uniform electric field is directed straight upward. What can ber ul;5h4 eglr. said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equiad3x1 u65g a shkkbe;,librium near an electric charge

  A positive point charge is enclosed in a hollo (cjq/awzwo( 0w metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric c 0wj/(qwaoz(field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriuogj( jecb 7r8hto4t2pni+*lb7b (l ) nm.

State Gauss's law.

  The charge carried by one electron .z. 9xc0a*faw d /ijklis $e = -1.6 \times 10^{-19} \; C$. 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 morwgdtx r. lm k4.ca*ty(s je.;,e protons than electrons does this pieceryks 4 xtd(w; mca.,jlt. *e.g of plastic have?

  What is the charge on 1 kgk.jp ie9ab; vl;p *.b.3c/zu3 eoiz7 goi;kmd of protons?

  An atomic nucleus has a charge of ,diu 0a(q+ef6 (ixhux$+40e$. 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 mC, 2.1iw i zpz.+fksuo20sk 5seg respectively. What is the magnitude of the electric force between them?s2wkpz2 iz+.g 5sfkies 0o1.u

  A 1.0-C charge is 15 m from a second charge, and the force between them j7z18oa-2m rw)jl mr pis 1.0 N. What is the magnitude of the second cha 72 j m)jrm8zl-wprao1rge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?vqd39*7rpyt0*k o z /bgjg ei1

  The force between a x +d4jo;(xl)jjlqk c0$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N force. If they a hiho) +li4fno yrzqys03tb/4j1c p1: re moved to a new separation of 8.0 cm, wha14 ly:+ti04)fjoqsyh bnoirzh1/c 3pt is the electric force between them?

  Three identical point charges of 2.0 mC are placednkvo*wxp0* 9yzkg2 /k 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 direction of the g 92zkpo0k*/wk*yxnv electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-accd7 khlp8-h )xis. A charge of +2.0 mC is 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 magnitud)7 kcpldh8-che and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are loc0pphhavi (tbyhq3g5n5b* p+ 4ated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.0p5qn+p0ipb at g4h3 *h5hbv(y0 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 squa+2p yn )w:k6so+na lb+:zgr jore, 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 6o2ys g+lb) :arj+nz: wnp+kocenter. 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 (0j7rf2 cr1 ;zbow1k ehrtvilxv* j2jl9+b l /03, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chaw ir9j;vj2 013zt h+rxl 2obl k7vle/1jr*bcfrge?

  Q1 = 6.0 nC is at (0.30 od,o 4p4d5z6.7ichtx;v w uq km, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of td wxpd.; 5, ouh7v46iq 4zokcthe net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are place:(/ 4uspnrbk -.myr8nos xf,ad at the vertices of an equilateral triangle which measures 3banrs kxmy(8f: u-pons4,. /r0 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which ar2ewmpx*;/fy+lcdqx j ( 7v gn2e separated by 3.0 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 2jyp7wfc(vlx dn2 q ;gm+e/x*force acting on it would be zero?

  A +3.0-C charge is at the origin and a +n 1r45 hap:zdla0k-ly9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on i41rkphlz l:daa5 0ny-t is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. b*g0gaj0 8bt sWhere can a third positive charge +q be placed so that the force on it it ga*8b0s gjb0s zero?

  A copper penny has a mass of 3.06lp-4hr3( t 5-o*-meb 8 uj2tydlfum dqagdg* 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 8j9yl ezni es+ ,7,mg p(qt;reforce of gravity by the attraction of a fixed proton some distance above it. How far above the ip8, 7q (rys mgzeee jt,n+9l;electron is the proton?

  Two 0.20-g metal spheres are hung from a c :o dewtz9kp+. ab6h7hommon point by nonconducting threads which are 30 cm long. B+7e6whkz op9hb d.ta:oth 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 has a charge of +40e. What is mx9jhg3y7l4 l the magnitude of the electric field at a distance of 1.mj3hx yl4l79g0 m from the nucleus?

  What are the magnitude and direction of the electrionv;258jkdrt )w ,zycc field at a distance of 1.50 m from a 50.0-nC chjdz)r,wtk2 8y5 on cv;arge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the edrl bifm 9;, b:mh2uq)4 xcc:rlectric field at the locatixru2dfc)m h qrb;, milb4::c9on of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction og;(c /cijwhe)nt8fzq8y) v7p f the electric fieln e8/c)h8pjw7 zv(fqc;)gty i d?

  A 5.0-C charge is 10 m from a small test nkk 8*l8shhyoglp 8+mfe773 acharge. What is the magnitude of the force experienced by a 1.0 nC charhysg ep73ahknlf7+88ok8* m lge placed at the location of the test charge?

  Two point charges eac.ej+mzf j4;3jbu)5ihmqig 7 s+2e nlq9uqiw8h have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway bet;3 +f 7 bim 9h)mleqw2ugzn8ij.sj54qq+ ieujween the two charges?

  A 5.0-mC charge is placed at the 0 cm ma7gm4gne8;eozf krb ypa,4 y :hg,l7p8rk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field pzegg, ne ym4ap8k,778bo:4 rgh ; fylat the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chvkz;(u rwk p1. vu7hy)arge is placed at the 50 cm mark. At what point on a l;uv(prwzuy.)v h7k1kine 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 ano6y,7c x yx o,rg2+nchd x = 0.20 m. What is the magnitude of the electric field at the +ccghy7y x,ro, 2o6nxpoint midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 cz/hy5,0/cv2rqf,6 ki l vgqa m. The last corner is occupied by a -3.0/0vkvq f h,gz5c , rlyac/i26q mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 g6z*nf p no9z1xb6wo1m 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); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is the magnitude of the electric field at the squab 661pnzg1 wfn9xoo *zre's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in xazy5 2tvz7 u3k ops,0opt8f5a uniform electric field. What is the magnitude of this electric fieu 0zo a7z3,x5 kt28syvotp f5pld?

  A particle with a ch:7+ knvbl w0to/j23dfm dg 7tvarge of 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 :c eiluys4na a,7/v7e mass 0.120 g is placed in an electric field of 6000 N/C pointing downward. Whi4cleuey,an a 7sv/ :7at charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries qc48j,rjf+h c a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended c +h4c,rfj8qjagainst the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries axhpp k 2hm9or/+km2 q (/tzob9 charge of +2.0 mC. What is the magnitude of the electric fiob2rx+m kpp t/2 9zqm(k9 oh/held 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.qvep379e wc;a 0 mC. What is the electric field 6.0 cm f;p39 evecwaq7 rom the center of the sphere?