State the law of conservat cz+hzv9gba1-fn efa4 ce:a :+.m3 vwjion of electric charge.

  Is it possible for two negative charges to attract e08w-t*lj7lw vq a3g; xdq 7kiq45xjmhach other?

  Is it possible for a positive and a negative char9ms2 fg2:r1 - lclpufkge to attract each other?

  A glass rod is rubbed with a ph i:;da*t )dzmwg5d mgh+uk2 ;iece of silk. During the process the glass rod acquires a positivh* t )h2g+dkma5ud;:zdmw;gi e charge and the silk

  A proton carries a

  The model of the atomi5:.6dcevsvfgb gp )b7z gsi xb:747k shows a

  A neutral atom always ga+huyv.s y;d:;dzl 5has

  An atom has more electrons than protons. Tf emx,,b vribf3s0.r0he atom is

  Materials in which the electrons are bound verym-0cuo vg 6*vg v3t.lb tightly to the nuclei are referredgv6u-o.v m*g3v0cb t l to as

  Materials in which the electrons are bounrcnsrl+c-l.; q o wg5:yk8 w1mr7e- df,ofc(nd very loosely to the nuclei and can move abomr,onf yqk(:g c7 ;ecr 81c+ldnl. wfw-o5rs -ut freely within the material are referred to as

  A negatively charged rod is brought near one end of an unch1-jil y2jumc r( q:z(larged metal bar. The end of the metal 1 jmuq: lrl(jz-2iy(cbar farthest from the charged rod will be charged

  Sphere A carries a net rf m6uzt jkk) usl8)3,positive charge, and sphere B is neutral. They are placed near each other on z8uft ksl)3), 6 urjkman insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrof+ :n5iu kva9iki-r.escope positively?

  An originally neutral electroscope is briefly touched with a pb.+oawz2mv 3 nositively charged glass rod. The eo3 am. bzv2+nwlectroscope

  An originally neutral electroscopeoabr)iel ; s16rrem4: is grounded briefly while a positively charged glass rod is held near it. After the glass rod 4 o;6 :aebeirrrs1lm)is removed, the electroscope

  A positive object touches a neutral el0 met8 upf 3n33 qldwbebf72v+ectroscope, and the leaves separate. Then a negative object is brought el 0 2ffu 37q3ndpw8etm3vb+b near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is o 9vhs 8m;e6+8fruf6i kous3oplaced 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 f9oeivo f6moh8uk ;+su6s r38the 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 Cse 751f n:qftavhm,9moulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge i 5xtx/d/54kvhk3ftejo6 0vpzs larger in t5xdz5v/0fo3j xe6k4/ kvthpmagnitude than the second charge.

  Sphere A carries a ne qt* kbp-z+lvd x,d8k(g 1pim0t charge and sphere B is neutral. They are placed near each other on an ig,z +pk(0qdbdlt v-18mpk*x i nsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each othe2ru nwitu( z+( 8sdk-9pt:oqd )t0vfer with a certain force. If the charges on both objects are doubled with) fzp( tvi298 qdus0kdo n-r twe+u:t( no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attr705; 8szimj4pa clim eactive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?lz8s5pe4i7mmi 0 ;jac

  Two charged objects attra-e4);w djzau lvi :e9fct 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 dis4: jeuwf)di9-;a lz vetance 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. What h6 ; bga)xg4+gs 6s )bpsihk3wwappens to the magnitude of the force on the proton if a second electron is placed next to tb6)+ g b4 xg)ipsg3s6 whsaw;khe first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens to lg) cb+7, 0pw b ,ta)k-pvmirzthe mrm gp,pbk -z0 la)c ,vt7)+iwbagnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated bybs xbg*19, usg a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 *b bs19s ugg,xm closer to the proton?

  A point charge of +Q is placed at the center of a square. vlze -5uc./vaanc)1 t, r/fw r When a second point charge of -Q is placed at one of the square's corners, it is obse1u/t w, .c- vzaera/ rc5vlf)nrved 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 centroid of a8qeef7wuga6s aa* 7,d*hkrl;-m 0wwwn equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostat6 w u7ela-e afrdw70;a h*8swm,wq*kgic 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 not a vec6l7vqth:+5ty 9mdrm:ba w8uz tor?

  At twice the distance from a point charge, the strength ofmuc*-3v i5*k tsjhz )m the electric field

  Is it possible to have a zero electric field value between a negativ i zhg5puj40oh,u2a+ 4 drq,qze and positive charge along the li2 0zup qig 5qur a,z+hoh4,dj4ne joining the two charges?

  Is it possible to have a zoa8xzjtr uf8: *k,0 llero electric field value between two positive charges along the line joining the two cxu,j* klf: 0artl 8zo8harges?

  Electric field lines near psitiwfv)p l8,lf) yif98q 4obgm,b ve point charges

  The electric field s y9gd1yl b,razx0:xiz2a ,l6vcp++ o;un lq.chown

  Can electric field lines int r enm4m)ljlz:y* k3(tersect in free space?

  A solid block of metal in electrostatho:v ,3r1s fxwic equilibrium is placed in a uniform electric field. Give a sta,3:1h ofwx svrtement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow-zzzm7h6w) mp evn, 7f metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center an)wn67m7h-m z,ep zfvz d the surface is

  A cubic block of aluminum rests on a wooc16jik/y*ai4iv /hfr( css, gj56jpa ;i wc*kden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge c6sh ki6ri/gp4v5*is;y /f 1c ajwcj(k a ,j*ion the block's top surface?

  If a conductor is in electrostatic equilibrium near an electra2d+ x;lcv ptt8+c(i bic charge

  A positive point charge is enclosed in a hollow metal psnq fd3w,0pg +t ub8ejk6))plic sphere that is grounded. As compared to the case without the hollo,f tds0jwbp6 +83 n pp))gekquw sphere, the electric field at a point directly above the hollow sphere has

State three properties of l0*i+wfp b)k rconductors in static equilibrium.

State Gauss's law.

  The charge carried by one elec0vsm-x(5 ; mi so.kyoptron 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 e(kn i,w l z(2y9-sqv jfy7an(charge of +2.00 mC. How many more protons than electrons does this piece of play a7yk-((,lsnz je n(vwi9f2qstic have?

  What is the charge on 1 kg of z (skg;oo 5ng.n a8iw0protons?

  An atomic nucleus has a charge o*g;wq:9r o ee8 cedhs)(y3vg zf $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separ2p2 jpa3z+pwmated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric mp+w3ap j2z2pforce between them?

  A 1.0-C charge is 15 m from a second charg21gv8zmkch. xe, and the force between them is 1.0 N. Whahm.8 12kxzvcgt is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apag oowrxp(0r0o9 p( t4ert are they?

  The force between a nangd o5ex7r;;n.mpr4 g- u0c$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 c9fayn:0v m p*bm apart, experience a 1.0-N force. If they are moved to a new separation of m0:9 *fnapbyv 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cs4c-0js,zbi 7o c8c/k0 kj oggharge is at the origin, the s,0 gcksczo4i8kg/0 j c7j-ob 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 electrostatic force which acts on the charge at the origin?

  Three point charges are placed l9xowt6zem t.b ee )j34 daj+*on the x-axis. 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 magnitude and directi 9l6j *+ zb)a3dj.etwxt4oemeon of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at xc)j 4tqvw4;fy/s+ hoz = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. h4ts)c f4 qv y/+;wojzWhat is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placz -yqna(8n0 syed at the center of a square, and a second point charge of -Q is placed at the upper-left corney 8-q(n s0yznar. 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 nC is4dbzr,sw4kg .h/ o9he at (0, 0). What is the magnitude .kehsdo4/wgh, r9 zb4of the net force on 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 ihtgfoi(:, n,l/ro0 jhs at (0, 0). What is thol/ h,no( 0i hgr,f:jte direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices z9+own(o b5sw of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force w(os+wn9ozb5 which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which aez fudsl*3 r88re 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 8rus*d8z3ef lforce 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. / .x;seyr(fqrra y-b2 pf1hl. Where on the x-axis can a thrb (fqf /; sh2.rrp.ylxe1a -yird charge 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. W ,o:)(( dv:ulgceni3xz+ qpy xhere can a third positive charge +q be placed so that the force oypgxzq , (v:3doc uxel(n:i+)n it is zero?

  A copper penny has a mas 3 pc z3fqpgkgm1y8f;(s of 3.0 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 agains okch:z b*:/wst the force of gravity by the attraction of a fixed proton some distance above it. How far a:*: ozwhkcbs/bove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threadvq8mvn4 u9jc yz7h(lhm,10v a s which are 30 cm long. Both are given identical charges, and the electrostati84 lcm0yz (haqj 19u7vvn,hmvc 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 glhp*mk*ee5 -8 kcv* m yip:x6a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m *mmi6gk v*p:k5eh -y8c*e xlpfrom the nucleus?

  What are the magnitude and direction of the elo7eusvm45re*s(x;ip.-jik e n 0a 4os ectric field at a distance of 1.50 m from a 50.0-nC charge4v e-se o;emop i57.iu(0*ns as jxr4k?

  A 5.0-C charge is 10 m from a small test charu10vkcvwemd(rj 4 13 wge. What is the magnitude of the electric field at the 1mkvvj0 u13r(we 4wcd location of the test charge?

  A 5.0-C charge is 10 m from a small test cha.i3fu gvhhkq1 y:v+f zqtj ye3b1,;m0rge. What is the direction of the electrichk0u; yq3.1:bv f +, zfivt3qemh1 jyg field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thxw)t a.z n6*) xe 2crm9wccor0e force experienced by a 1.0 nC charge placed exowna)m2cc)tz0 wr 9cx*r. 6at the location of the test charge?

  Two point charges eaca;sb (r. f,q t:q 81lqphs.fjvh have a value of 3.0 C and are separated by a distance of 4.0 m. What is a;.jhbq1fp(8 v .:lfqrtssq ,the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark h1 gh/1uu4rehv ggm:sz/9p 6e 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 mrhu gps z:4/ug h19ve mhg/e16ark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sdfyy +3fsoksf8v,gsv.5+3 z stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line yv3y5 s8gzf+vf ,3ko .f d+sssjoining 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 =ati f5.2uado8 0.20 m. What is the magnitude oa2a8to5uf id .f the electric field at the point midway between them?

  Three 3.0 mC charges a4pq xa*t; a1kty.kb(s re at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mtp4k ; sa. y(bt*qxk1aC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. u cror::5mdq 27vbo (sCharges are placed at the corners of the square as fo7drq 2 b(mc5roos::uvllows: +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 whetflpf9;z gd1l / )mrw)n it is placed in a uniform electric field)wpl1fzm;)lft/ drg9 . What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has7cv9vm re;ms(-d7wvb 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 28h) rxr 8k2loi5 sbqtof 6000 N/C pointing downward. What charge must be placed on the ball for it to be sushit 82r)b x2ks8rol q5pended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Ta;l b 5k6vwmuhai3-u ;he ball is placed inside a uniform electric field, and is suspended against- ihb6a ;uk5w v3mau;l 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. Wh9dp+ gny2w :cqat is the magnitudpcwqyd:gn9 +2 e of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC.3vrij cozja 78:k,*jvf3q: a i What is the electric field 6.0 cm fro,:z o:frjjjiic 7a 8a*vvqk33m the center of the sphere?