State the law of conservageix id:z vb :+s/f)nl1fp*2ation of electric charge.

  Is it possible for two negative cjb4kb +lh4+ad* 1i 1v5tw rwcjharges to attract each other?

  Is it possible for a positive and90 m/qw dq rjh(;xj:9nx+u cxp a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the gbt. j0wf zz6d-lass rod acquires a positive charge and thb0t-dj .zzwf6 e silk

  A proton carries a

  The model of the atom shj0xn,)gu k o4dows a

  A neutral atom alwaysbyc g5fcm:ut3nyov ,f)8f e 3, has

  An atom has more elect242ayjadwtlv76 gp:+fo3 qn j rons than protons. The atom is

  Materials in which the electcpk2 coj ,(kc*2h5qnt rons are bound very tightly to the nuclei are referrec2*qj ot,(c pkkc52hn d to as

  Materials in which the electrons are bound very loosely to thr 8: o(d osxje:h(b- )sl.wpebe nuclei and can move about freely within the material are referr) d: h(b8slj:br (-xeoopesw. ed to as

  A negatively charged rod is bro7z4;,ozi kzrp ught near one end of an uncharged metal bar. The end of the metal ba ;p7r z4zkoz,ir farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B iwkf 9 (idmw1h6s neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wirmi (6kh91wfdwe that is grounded. Which statement is correct?

  How can a negatively charged rod charge oxv /)c hm r8(hey a/)lie.dn)an electroscope positively?

  An originally neutrali o-8 an5ud7 i9-bc6 fhhpo)fg1cd j/m electroscope is briefly touched with a positively charged glass 7iphgdu i- 5-)d8cjfm/9cbf61oao nhrod. The electroscope

  An originally neutral electroscope is grounded briefly while a9ya73egv0fn06vx )+ivrkx nwi hi lnf:8sy93 positively charged glass rod is held near it. After the glass rod is vyvf+hlgs09 fvy:8k)n73n 0n 63i exxi riw9aremoved, the electroscope

  A positive object tous c- n20zyo m,ycip55iches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happs-c0pzii5nyy2, c m5oens to the leaves?

  A large negatively charged object is placeiahz2 lq3o5 8pkk/2p zd 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. Atkpi8 l ak5hz322 ozp/q 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 Couloerk 1n;ay(d70l rsg1t:ayom8 mb constant $k$, which appears in Coulomb's law?

  Two charged objects arsrqaltm4 ; /d)e separated by a distance d. The first charge is larger in mdqmtl4a/ s )r;agnitude than the second charge.

  Sphere A carries a net 9-o sbceol cn4n778ry charge and sphere B is neutral. They are placed near each other on an insulated tonyr7s 9 oe -nc74c8blable. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges gdu ash7a/g)37o8t cd on both objects are d7 d d/u8)cagsa7 ohtg3oubled with no change in separation, the force between them

  Two charges are separau7.dipf wzse(99 h 2ave.:dzt ted by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?(hadi : z.e92tuwp7.evfs 9z d

  Two charged objects attract each other w33 rxsm3tbs) uawbn 3(k*g 4jofds.z6ith a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance betwsdg)xrf3 z(.a 3su bkjtm3on *43b6sween their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a protmm0fiiaow9v (4y8l 2 lon are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a sewy(ll 8f v a2i94o0mimcond electron is placed next to the first electron?

  An electron and a pr8 + xj/6t;1dfk0q0 fcsqie qploton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the protont+k8/se ;licdqpj61xq q0 0ff?

  An electron and a pro (4 :kj0uu(wafgt1ho qfnb,d *ton are separated by a distance of 1.0 m. What happens to the size of the force on the proton ijdtfw:0n*h gofu,(ku qb41( a f the electron is moved 0.50 m closer to the proton?

  A point charge of +Qh4m7qh ball) 7 is placed at the center of a square. When a second point charge of -Q is placed at one o7l4 7qblmh)haf 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 centroid of an equilateral triangle. Whenkfpuny:; v7 0k a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 Nn 0pk:7vy ukf; 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 vector?tniv+o( ynx6sg,f s04

  At twice the distance from a point charge, the strength of the electric fie vuffeee5k,os 0 ue5:8+q qj ux10jm;pld

  Is it possible to have a zero elehn9bz2 k2:t- xl rcb bym 7eba7/8ta+octric field value between a negative and positive charge along the line joining the 7 t7 +chborl9y-tk b/ xez:8ba2n2mba two charges?

  Is it possible to have a zero ele)scln2k w;f al2l(pceb( l* .jctric field value between two positive charges along the line join( pj2e.alb*;c clnsl2 )(wlfking the two charges?

  Electric field lines near psitive point chargy)7 (f guyssyo7qu ij.3sg :7bes

  The electric field shsr94hunr9 4wr e8 2tdpshe5a0own

  Can electric field lines intersect i/i 6weft5 l.rnn free space?

  A solid block of metal in electrostatic equilibrium q/ji+ktaiq 7 qddl+): is placed in a uniform electric field. Give a statement concerning the e q/qaiitd7+k qdl+:j )lectric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are a u2r 8rsln0vl7uf45 f)t9zx ueach given the same chargfuv)u8lxa rn0l259tfs ru4z7 e, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a n vm5joza .b50uniform electric field is directed straight upward. What can be said concerni.5o5j0b vam nzng the charge on the block's top surface?

  If a conductor is in elect+7lep 39deox pdcn)u04j ou *grostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gr 5kn9ebafj) 9qs p8kc9ounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere ha9nf 9j 8cbpa9)kes q5ks

State three properties of conductors in static equili ppzoq zhlf: p9tc+-7z-qke,+brium.

State Gauss's law.

  The charge carried by one electrons,x0g ,-wu eva 4gyd.ee :nbq0 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 mC. How many more priyk/8 ec2p686ptu lrb 1o3urbq: f i6potons than electrons does this piece of pl1b2eiil :p3c k 8u6rb6qp 6y/o8t prufastic have?

  What is the charge on 5bj0c l m-y kie,,vy3b1 kg of protons?

  An atomic nucleus has a charge of up-n;y-7kkav e r)y9g $+40e$. 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 value8e) n:,q3kdk/c6 aqs au8m u geujy74rs of 2.0 and -4.0 mC, respectively. What is the magnitudea6)k8,g4qy c 83u s7qj drmenue/a: ku of the electric force between them?

  A 1.0-C charge is 15 m from a secon1 jt4c38iat,wlvo+ s ud charge, and the force between them is 1.0 N. What is the magnitude of the second char84o ji cu+s1,lt av3twge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are tha k02lu ab/8,m xfsyii699ekvey?

  The force between a f (x2lorjvx6j,3 +j lm$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiq b4d(xjeja9qkcu bp d78m045ence a 1.0-N force. If they are moved to a new separation of 7xmpjdku9q58a 4q(bbjd ec0 48.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-az3f,f,4buaiq 7b ; d1a -bfwmbxis. 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 a4u;fbb af7q1i,d -bz ,wf mb3are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed cpfyf *c8c svi0l9yn62ic 5j(,nfo: oon 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 directioioi26c5 y*cf n(c90:n ,fyvf pcjlo8sn of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the fom g2x6h(k2 8xrzrzj vepxwh66 f80y*qllowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = eh(zzy068 rpkx2r2q6*wx xh8 fv6jgm -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+0oyhgpjc p7ow.p4( srr / dc: 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 posit4 hyso/ppw crpd7 j0c.+o(r:g ive 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(o6jmqs;t rl4 )-syic.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of tmcyt) ro s(6-lsq4;jihe 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 isrdw4,c:ce k 3v at (k,ec43 vcw: dr0, 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 verticeslnaxj(ers 92 8 of an equilateral triangle which measures 30 cm on a side. What is the8j (a nxlse9r2 magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m.74t+i p)ls9n fqmv-ti 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 on it would bv+p 9is7 niq )ltftm-4e zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at +9eijg ( g2hrox = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is(hog+ge 92i rj zero?

  Charge +2q is placed at the orig- qu1gigc+7 vtjn2yf fxi/xnz5y: 66win and charge -q is placed at x = 2a. Where can a third positive charge +q be place :-1yz6fxj6fgxqgni +t2 / vwunyci57d so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A t, dq bc6q++dsc-k2k 6dfg/oldotal 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 att9n28l2 fasu jbraction of a fixed proton some dist2 89u2af bjslnance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung fro* jb t 6.0zoe:4b viztm5/gh bca yn;,ci6zs5qm a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle bem,gbtc*zh v; 5ntoz: aj. 66ebcqsi50b4iz/y tween 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 of th.91ii (nh o1ng- xpsfpe electric field at a distance of 1.0 m -i( fnsoixgnh.19p1p from the nucleus?

  What are the magnitude and direction of the electric field at a dzxlegn+ 6a++*wyq m edf mv3)8istance of 1.50 m from a 50.wv )f m6l+eq+e+gy* 3dzxman80-nC charge?

  A 5.0-C charge is 10 m from a smfe /r;s3;mfvx b-xn4z)vbm 4lall test charge. What is the magnitude of the electric field at the locatio;vnm/44xbf bv) ef-xr zs3 m;ln of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directipm-sckqtm b8 1 (/ shn3x0bkc(on of the electric fielnb c8h3ptbmmc-x/k(s1 qs0(kd?

  A 5.0-C charge is 10 m from a small test charge. 6 ao9yid6zm7g What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge?6a6yiz 7m9do g

  Two point charges each have a value of 3.0 C and are separavk2t 1z 4gte4lted by a distance of 4.0 e1vk4g tzt 42lm. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mm h6t5g0o5:b:w,hx gilm vg4 cark of a meter stick and a -4.0 mC charge i:g0g lv4,:5c x mghhb6itow m5s placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm yp1-ogu4f*/ tt ccw(iet(y(xmark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At wh-t(weu1 tf(yt/oc g4px iy (c*at 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 = 0i;7bdovg a-rc+ g;.b9ccw1or and x = 0.20 m. What is ; ro;7g+oc v1c9iw arbcd.g b-the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a s,b8fybmmma t6ith5 l0 t ,6-yoquare of side 0.50 m. The last corner is ot6yb6m y8,,5-tl0 omftmhbi accupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at theucaz cf8 ct1e3n w2ynsp-17x - 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). 8uccw-xc1at y7p f3-ne1 nsz2 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 plaw 5xdzhj0 v+h/ced in a uniform electric field. What is the magnitude of this electric f+z0v5x/d hhjwield?

  A particle with a charge of 4.0 mC has)cqw p 4cikc0r1, 7n8 awnrlf5 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 ma/ rrfzo ky; ,-zgm--ql37gu6 c70arvux4numwss 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on t f xcrm-- lru0z7a g,rn6k-4 gq7omyu;wuz/v3he ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Th9e; w8qe2v l ol.wlmx3e ball is placed inside a uniform electric field, and iso8vqm.l2 lee xw9w;3l suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carrid z:60t(fyto xlhly1)es a charge of +2.0 mC. What is the magnitude o )y:60htdx1tzol(y lff the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carr fqpd1mejz uk 2hc+ .u2v/f+(gies a charge of 3.0 mC. What is the electric field 6.0 cm from the center gfmkudez.v2 c2p (u/+h1q+fj of the sphere?