State the law of conservation of electric chee/as4 g: v3 kdhr)0tzarge.

  Is it possible for two negative charges to attract evdevyi*ubpr -k4(+s 2ach other?

  Is it possible for a positive and a negaqn04pfnvd3b v3,t) b; v-jbv htive charge to attract each other?

  A glass rod is rubbed q gcv by(e6a9:v( ,:ogjez6uqwith a piece of silk. During the process the glass rod acquireqo:6vcjzg g buy(( :e,eqv96as a positive charge and the silk

  A proton carries a

  The model of the atom shows ax+qoa f0qp)r. j p(dk;

  A neutral atom alwayk3hv;fs oa7 q,s has

  An atom has more electg o8(sveixv7-zb+, d( e0cio irons than protons. The atom is

  Materials in which the electrons are bound v 9( 4e0(x wunom9copqvery tightly to the nuclei are referred to a 90oe9qowx4vmpn ( c(us

  Materials in which the electrons arevm*9 /tykvj,d(u i u .fqpx)/g bound very loosely to the nuclei and can move about freely within the material are referred //j)v9fu yuvtxp m,gd iq.k(*to as

  A negatively charged rod is bro dh/5tc+o vh:smcwlv +pjb91(ught near one end of an uncharged metal bar. The end of the metal bar fw9(lvth +cc:m1v +bhjpd 5 /osarthest from the charged rod will be charged

  Sphere A carries a net positive charge.-ts,twq.vp g , and sphere B is neutral. They are placed near each other on an in.tw-vg q .ts,psulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negativelyt)uiho(1z9 mb b7q;yc charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly toun0 h009vyhxu1hqm - (3ueaamlched with a positively charged glass rod. The electroscop 0auhy09hlmnvu hxa0qe- m (31e

  An originally neutral electroscope is grounded briev-y+isuw ,:w mfly while a positively charged glass rod is held near it. After the glass rod is removv+y,uwsm -i:wed, the electroscope

  A positive object touches a ns ;qb-z,e9bu+ b,oy qzeutral electroscope, and the leaves separate. Then a u,yqezqb;zob+- 9sb, negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral m(i 6e oh,3)cihc6k1gphld5b ol du ,w 90vze2vetallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball roll)3g 6dd51i0b ckvc9ze6,lve(u hh2lpw ,ooihs 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 is the final charge on each ball?

  Charge is

  What are the units of the Co) avg cku/b*b8ulomb constant $k$, which appears in Coulomb's law?

  Two charged objects 5lfsh4v(;1p k2ktc9w g*ocm rare separated by a distance d. The first charge is larger in magnitude than the s*k wpk lf;4o 25 (9mhs1tcgrcvecond charge.

  Sphere A carries a net chargedwb3y9f2mg,yf 3 b h*z and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force h*2 wm 3d93b,zfbyygfbetween them?

  Two charged objects attract zf,f55 9d vznb9pc/rob/ j5tneach other with a certain force. If the charges on both objects are doubled wit95 dtjop5vn nb, z/9/f5b cfzrh no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces of 8g: tgn8ovv+lt 3zuicxq)+r 0 zdg),r F on each other. If the charges utltr 08 ,:z3xv))+giz +qgrcod 8ngvare separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to th3dm hkp fuc2q5g 5xw5.e force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reducedg pfcm3h55kduq 25x.w to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1g a s8+o6hs/smp9to 0b.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next m9g8o6 +abtss/os0p h to the first electron?

  An electron and a proton are separated haey-1-cst t.n8g z( wby 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 pr wt- ghc.nt-e8as(z 1yoton?

  An electron and a proton are separated by a distance of 1.0 m.xg+qpkgv0amh 9.v2 o- What happens to the sizeqhgp-a. x +mvk0v 9g2o of the force 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. When0,hxn 4/, bg ud)xs9s zr sse;:dv6nlw 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 :s l90sw ,h x v/eu)xdsbz4sng6dn;r,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.s iz8 8bvrvh 0c,:qsf.a-4e;yv vom/r 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 magnituy :8eca ;rsbfqsvhv0 vvmz.ir,o 8-/4de 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 is41oejg8;r m gp not a vector?

  At twice the distance from a point charge, the strength of the elpp:fbq1(qz:)8buu vimg/ro, ectric field

  Is it possible to have a zero electric field value betwefnoulq ,vg6l-a534g y en a negative and positive cha65n- qv, uy43fglolg arge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positiv 6s*apf, 8uf/n9i(p(p xud:jri22jt a wauiz-e charges along the line joining the9 (untfu(j-, fzja2i62pax a*pipi ws:/ud 8r two charges?

  Electric field lines near psitive pointlcb1(xy 3yj; /wm//+ftlgddkyvg0 4l charges

  The electric field s;bq9(u(-urxee2itt-9 fh tr n3 xvui3 hown

  Can electric field lines intersect inj*enhkopg.i)9*d2jb3 p 5 gms free space?

  A solid block of metal in electrostatic equilibrium is pl4puukjq+ lsb,d0wj5v3)o/s i l-.r ;k4qt sfl aced in a uniform electric field. Give a sta 3u)fl l qtpsduvil -+;0kbkro/ 445,.wsj qjstement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of eqby46 rjv* 6cxuual diameters are each given the same charge, the electric 66 *rbu4jcxvy field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wi+ nlcn/ a7-mch 9bwjy +wo1+ovc( ft2here a uniform electric field is7o-nvaw2 h+ 1n+l f9b+ /mt(cioyccjw directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic qnrh9vpt7 t5/ equilibrium near an electric charge

  A positive point charge is enclosed in a holj f)(qh3 n -lq5wzp5ijlow metallic sphere that is grounded. As compared to the caw- j iqzln)pf(5jh5q3se without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of couo7tis)pkey 5xt /3i3nductors in static equilibrium.

State Gauss's law.

  The charge carried bys :tfeiz.xa+2 one electron 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 neyi4 7u* p4ui84u6sumu l ttd1)fwb- dlt charge of +2.00 mC. How many more protons than electrons does this piece y l8d4mu-t 1fi4upuus)bt4di6wl7u* of plastic have?

  What is the charge on 1 kg of protojxb o1x.jfj5uep;u 0y v m4 4ijgwh/4)ns?

  An atomic nucleus hasd hn:6k6a tr(r a charge of $+40e$. 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 oa bv)lxab ;fc(ac/k2. f 2.0 and -4.0 mC, respectively. Whv( b lcafbaa2.;/)xckat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the foru;d3aeszf,7-go 4b4bkzo +m g ce between them is 1.0 N. Woa,bm-44sgub ; oz k7+3gzedfhat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far aparth6 w-u9a tcj(5r.(omdcklg)2ju u a(f are they?

  The force between a k.9cfm8i06gzwv w.,pjfq eg (mux /-t$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apapr0 3zq cihosh943hc.rt, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the elo9pr.4 ihqc3h 3z hc0sectric force between them?

  Three identical point charges of 2.0 mC are placed oh yd4:fw /:cb z44wiykn the x-axis. The first charge is at the origin, the second to tywk4 :d i ycfb/:h4w4zhe 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-c3c*f bx0ldw,.l wmk (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 marl wd*xb.l,cm(kc03f wk. 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 = 2.03tdu0k2becykx 9 1pc3 tfbd (k73cl+ h0 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What 3f(x pytt0chuebc1kk+93 dc d2blk37is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q f ;j0h;bi mo-1 msxja h)obo-4is placed 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 positive charge at the center. What is the magnitude of the ;xoom01j4f -)b ms -;joh hbiaforce 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.uq5rbwrf e:k)5jl n3+0 nC is at (0, 0):k5uwnb5j+q r 3)rfle. What is the magnitude of 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 (n 75md z,r:h4wojhj9n 0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC chargen49rz hd jm7jh5w:n,o ?

  Three identical charges of 9t6pymo9p /s :7iosmb3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of tos97yb:6mmto/p9 ip s he electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 gguj + 74oj /bgsqynd;:o ul- p/vau;9m. At what point, on a line between the two charges, would it be possible to place a charge ogoybu dv-/q;;/lngj+4 u: pajsg97uof -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and:cek -u;wx7pc a +9.0-C charge is at x = 4.0 m. Where on the:7xwcuk c-; pe x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and gf 9kzxxe/vm(npx4-f+/q - decharge -q is placed at x = 2a. Where can a third positive charge +q be placed so that tfk /ev xxqp4de/z(m xn-+fg- 9he force on it is zero?

  A copper penny has a mass of.ljwc+ 2 nua(ptzw5*f 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 ofpil aof4nh.+yef2o gd7lc f3-d5dd :7 gravity by the attraction of a fixed proton some distance above it. How far above the eleho-apf oe57lc.dn 7 g4f yid2:3l+d dfctron is the proton?

  Two 0.20-g metal spheres are hung from a common po:f593 jo yjmq8m *wo7gywn m7uint by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads i5 :*3mj y mo7gmf u7n8wwoy9jqs $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnfiu re0 hmi/4mql 8hj/r*se+1itude of the electric field at a distance of 1hlhei f8m/+me0jr*1 q4s iur/.0 m from the nucleus?

  What are the magnitude andb(niha1 g : pby41/s3be6e haf direction of the electric field at a distance of 1.50 m frompf bysa1i:nehe 64b3g(/1h b a a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magd8 yhwtzjxar3w/r+ +- nitude of the electric field aw-rr/d+t zh yx+wa 38jt the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What iny q4h- 7gn2, i pi9pdjh4oq1bs the direction of the electric fielhn9h27qio g,n 4dp4j pqi1-ybd?

  A 5.0-C charge is 10 m from a smallf om:io35u kw+ test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge?u:3o wifm5 +ko

  Two point charges each have a value of 3.0 C and 98+7 u5m )4luzyrj3hcr ro*.ywqoauh are separated by a distance of 4.0 m. What is the electric field atjc+z78*yrwmq 4 al .hr9)r u35oyuuho a point midway between the two charges?

  A 5.0-mC charge is plai-vv2 xl e4-q5nxz ;ymced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Wq4 vz ixx -vl5;myne-2hat is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at t 6i 7 dv+5pe,h f ;x77dcoeb(ccuvktp1he 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zero? x 6p+tvpk;ev17ob(f5 h7ecdcd7,cui

  Two point charges of +3.0 mC a95qu gve k brby:s,1fv +je-j,nd -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway bet9jk,e 5v1sef +q:gbjurv- by, ween them?

  Three 3.0 mC charges are at the ts6s/8 rs f+qt8*irdo chree corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC char sc*t886sf+qdsio r/r ge. Find the electric field at the center of the square.

  Consider a square whichdcde7 3khhr 94 is 1.0 m on a side. Charges are placed at the corners of the3 d7kr9e4h dhc 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 square's center?

  A force of 10 N acts on a charge of 5.0 mC w0 .yafid;cs l km7- dscv//to1hen it is placed in a uniform electric field. What is the mad c iky/ fo0vs;1smd.-/tlc a7gnitude of this electric field?

  A particle with a charge o u32pj gw-*n+:htkwz mf 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 mass 0.120 g is placed in an electric field of 6000 N/C poino-ur p i (fdv; ig3fc7e :a.5o6q-xzzuting downw-.5z3gdp:urf cf ia;e7o( q-i zx6uvoard. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0vrn(y;jawdn/;o- w;c9o3 iz g.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric fiel;wr/ gacn;-dyi( jz9o w3no v;d, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cib:d(xq7 btjh 1g) m0cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphc7 gb m10)jqtb:d (hxiere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 h.zc;v 7 f7oohmC. What is the electricfzh 7h.;o v7oc field 6.0 cm from the center of the sphere?