State the law of conservation of electric charj setk./ )gfkerk*q((e of;+wge.

  Is it possible for two negative charges to attract each t6v71ietzx/rs f(k +r other?

  Is it possible for a positive and a neg;,rpxd f h0b7kative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod acnu+;2. ,rxd li uwe;nvquires a positive charge and the silk2;dwuelv u+nr. xi ,n;

  A proton carries a

  The model of the atom(w1 0c*teucip shows a

  A neutral atom always flne6 8fv 4:danfjh)d j;j.k6has

  An atom has more electrons than protons. The gv9 v :8ye/ qdhw)w0k2( lxhmaatom is

  Materials in which the electrons are bound very tightly to the nuclei are refl,0unwmcy7h.x tre8+h 1zmcc4h4o,mn+ fm j 2 erred hcrc20m t+hw74 8mm umze,n h4. , +1xncyfjloto as

  Materials in which the electrons are bound veryxc .+ hah.cfb:rzl71 n loosely to the nuclei and can move about freely within the material are refer7chhf 1zl :b+xnr ca..red to as

  A negatively charged rod is brought near 7hb9du 8ht.fy k1p2mm one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be cha 9. umdmbp12hf87hytkrged

  Sphere A carries a net positive charq en; m9b1xat-8c4boige, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a w e-bocn9iqmx8ba ;14t ire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an e/,.fhqi/tu +l k:es ohlectroscope positively?

  An originally neutral electroscope )3z0ab1 reat; h lqu5tis briefly touched with a positively charged glass rod. The electrosco3b ;r1z t )u05aqlhaetpe

  An originally neutral electroscope is grounded briefly wh+u +cf5 hfo.koile a positively charged glass rod is held near it. After the glass rod is removed, the elech +fo5kc.f+ou troscope

  A positive object touches a neutral electroscope, and the leav y*cs- 37v isb*pqzzi(es separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves? *bszpiy7vzi3c( q-s*

  A large negatively charged object is placed on e8 iy(znpl+ +man insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls alon8ln(i+ez pym+g 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 is the final charge on each ball?

  Charge is

  What are the units of the u36m m (a+wgbiCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are sepa( hdpfoz +nw45rated by a distance d. The first charge is larger in magnitude than the second charge.d f+5po(z nwh4

  Sphere A carries a net charge and sphere B is neutral. They are plac.k8p85kq i;hbgb/-j,n n:u kpbbv5m oed near each other on an insulated table. Which statement best describes the electrostatic force bgpkj bpkmu5:o/n bniv-qb ,8;5 bh8k.etween them?

  Two charged objects attract each other with a certain force. I s2gigrx 8 zf0yu6c37rf the charges on both objects are doubled with no chaf g68yu7zs gri3c0 r2xnge in separation, the force between them

  Two charges are sepabxyu4vay8 rq0*2 9 p b6szu5lqrated 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 ar5*sqqx zb8v20y9bp6auu4yl r e the new mutual forces?

  Two charged objects attra hv+caeb 069u ztgzg.7n .axhqk11(fv ct 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 distanf(ub+1ce9g6 tzhvq07hx .v zan1kag.ce 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 happens t3qm4)seu yn9so the magnit) nss49 ye3qmuude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distanck3 z8ip:hwk7,9ccvhzncvy.p 3k5k l 9e of 1.0 m. What happens to the magnitude of the fo:pk3 vc9kihwk.97 zzk 5plnc 8cyh,v3 rce 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. What happens t8v-zobbwo8 0qo 3 -svvo the size of the force on the proton if the electz38qvwb8v ooo-s- v0bron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed aw: 0wb cspczl/m8/e 4bt 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 centecl4c:b e/s0p8b/mzw wr. 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 triangl czcc,)n3mg+.ajqu7x e. When a second charge of +Q is placed at one of th+jq3c,.nzca)gxcu 7 me 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 one of the other vertices?

  Which of the following iy 2 0/k2osltcdw8q-d)o l:ffd f(tyf-s not a vector?

  At twice the distance from a point 10d lv-abjl+9mutl9dcharge, the strength of the electric field

  Is it possible to have a zero electric6d trx14 3 hcye-pppjpia4,8v field value between a negative and positive charge along the line joinine dj 464vp1hp -p8apyx,r3ic tg the two charges?

  Is it possible to have a zero elecu .h lkn +,9olxxlc-,utric field value between two positive charges along the line joining the two chargex+ hkul.c ,,n- l9luoxs?

  Electric field lines near pr 1v3z,fc*ww1fpfls:pdd6i, sitive point charges

  The electric field shown;3aajmc(:5fx8ncdju8t n n pz; .g ys9

  Can electric field lineothgq29u:.rni:pb5 d s intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unir8s1g esr*wzm*(b .x iform electric field. Give a statement concerning the electric field in the block's intsz .mx rb 1w(*sr8gei*erior.

  If a solid metal sphere and a hollow metal spheekfcy 1isl0m. yy* nh.9l0q0mre of equal diameters are each given the same charge, the elecys* 0f0icehlyk0mn.q.y1 l9mtric field (E) midway between the center and the surface is

  A cubic block of alu) gtvjdz7a (uyud,0 v:8n(ooz8 vc in*minum rests on a wooden table in a region where a uniform electric field is direzoundog0:vvy*tn )78 ( dz, vc jiu8a(cted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electros7q.) sbzh1ab ftatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is go/labi1 a8uslsja z 5*m( 7k*zrounded. As compared to the case without the hollow sphere, the electric fiezalbl/uosai1kja z7s85 *(*mld at a point directly above the hollow sphere has

State three properties of conductors in static equig n+w)bh+l8v(zs hn1h.fxl 6-f ,z;fpzyah2zlibrium.

State Gauss's law.

  The charge carried by one v+antd0-:kl .gt g) nrelectron 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 )yze7nj6z-(vhyejv k3a1as( +2.00 mC. How many more protons than electro kzn3 eahsjv 17v-( 6(yayzje)ns does this piece of plastic have?

  What is the charge on 1 kg of protonsob nt,ny /f:q*?

  An atomic nucleus ha7osah ik9 d(t2q8 nh71lqih7js a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separ:fws+ep7 6s(.wbkls xated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude kl.7 f(s s6bwpswxe+:of the electric force between them?

  A 1.0-C charge is 15 m from a secon; 2mzao8vtf/j d charge, and the force between them is 1.0 N. What is the mz jom;f at8/2vagnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart ar5;q-4 jstq-m*e u* wghp)-jmpv phxc zijt0.6e they?

  The force between a ,38 rl -7 6zv2aceeh6idnygcr$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initi- ;zud(8d lrtzj6bqr4 ally 2.0 cm apart, experience a 1.0-N force. If they are moqzr; z8d(d6b ltr4u j-ved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point chan85+ib/6ncmw tias* rrges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third isma8w*ncirb/ s5nt+ 6i 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 olx r;(x2g+g;omfb :7hik lz* gf +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. Whatxz ggo; xg7fmlb2kr+ hl:;i(* are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at tyjoezf,x; 1- mhe following positions: Q1 = 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 the magnitude of the forcy1,j- xm;zeo fe on the 3.00-mC charge?

  A point charge of +Q is placed at the centgc:odm 1 dq 5 j*6d.5hyecjg9fer 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 onm*dq5g9oced djc.y 5fg1h :6 j 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 hhtl,wp3 ) *ws-s n9omis at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net forcep w) ht9o,s lw3hs*-mn 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 = 5.0xbw gv)/7xx) t nC is at (0, 0). What is the direction of the net force on the x/t x)v) 7wgxb5.0 nC charge?

  Three identical charges of 33a jumu)tcsbl3 ;g)6p;69bbs dfsy*f.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts onfy ms); 63u; clp9j3bss6ad bt)*fubg any one of the charges?

  Consider point charges of +Q and +4Q, which are se)6aoo /by ket/parated by 3.0 m. At what poikya6eo o /tb)/nt, 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 be zero?

  A +3.0-C charge is ats k8amjr-19zf/ojof1jc- ;mb the origin and a +9.0-C charge is at x = 4.0 m. Where on th1k1 a/f9zo-jmcrj s;bfj m8-oe x-axis can a third 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. Where cazb auy(://3:wgpkec *qt 3,id6lis exn a third positive charge +q be placed sp :: e/3w, gziu3xtbdi* /q ce6lskay(o that the force on it is zero?

  A copper penny has a mass o25xbau*bu.yis 4 ckb/8+ s hqjf 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 against the force of gravity by jlm 3 u/e/ 6 11jbhs+eg8ayfnythe attraction of a fixed proton some distance above it. How far above yaj31g/h lbesj u1+6yme/n 8f the electron is the proton?

  Two 0.20-g metal spheres are hung from acz4s z k,q3rcr 99wg/sfbd6/ q o-q6bo common point by nonconducting threads which s9c3/okoq6,d -cfs4bzq zr69qgrb w/are 30 cm long. Both 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 the magnitude of theamfoah-7 e: a9 electric field at a distance of 1.0 maa9f m :h-o7ae from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1:skubc6lc ohq gr;27).50 m fro uhg)lck ob:s6qc72r;m a 50.0-nC charge?

  A 5.0-C charge is 10 m from 7j1ks:q;f))pkyb wej.w7 c xna small test charge. What is the magnitude of the electric field a.7n:)yj1cexw7 q pws fbkj; k)t the location of the test charge?

  A 5.0-C charge is 10 m from a small te*u9uzjg dr 3(a06ma ibst charge. What is the direction of the electricdz riu6*mg0j( 93au ba field?

  A 5.0-C charge is 10 m from a small test c tz1x oqn)9v1pharge. What is the magnitude of the force experienced by o 1)zxvn1pq9t a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance ofr lmve,3 -dos, 4.0 m. What is the electric field at a point midway between the two chardmleov3,r,-s ges?

  A 5.0-mC charge is placed at hg8 jn0.9p liwthe 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cw l0 p.h8ngj9im mark. What 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 anu b6h:h0 hdx2n+a/o ldd a -4.0 mC charge is placed at the 50 cm mark. Auh0+d6hdbo x: / h2alnt 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 = 07oi) 8, kxf:p+o utdtp.20 m. What 87dix tt+ p f,)upko:ois the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sid0 rd,ozi. lnx 8(cwh6+r:pcgt e 0.50 m. The last corner is occupied by ,xl 8c(r0ph+nc gwot d.i6 :rza -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 p1 hgc u,s:sn6xlaced at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0:, csn1 x6ushg 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 in a uniform elects1yy /i osc+0uric field. What is the magnitude of this electric 1u 0oi+cyys /sfield?

  A particle with a charge of 4k (; tkf 2vq(y9a)zmr *scq6tg.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 skg 3oipx3 -/mplaced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be sus p/- xg33kmoispended?

  A foam ball of mass 0.150 2uqf39y6w( 3yhkvst4f:t ksr75 giw rg carries a charge of -2.00 nC. The ball is placed inside a uniform electric fiugf4 :926f sk3tw5sirhvkwyq 3ty ( r7eld, 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 is the magnivf2( uqsvej ef-q .2w1tude of the (j. e2fv vew2fqus1q-electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mopt c*am/; 4hhn6xlg8g /x1x eC. What is the electric field 1h8 gclanhtx ;g*x oe/xm6p4/ 6.0 cm from the center of the sphere?