State the law of conse bsf1ds8.6 mjqrvation of electric charge.

  Is it possible for two negative charges to attract each 0b+i*gtpmvv 9p n1qnq,lwbsa+ 36wb .other?

  Is it possible for a positive and a negativen p)i/, xvkw-9*oz67jpeb zvk charge to attract each other?

  A glass rod is rubbed with a piece of silk1jp g ah3y3ua(. During the process the glass rod acquires a positive charge a( ya3 h3ap1jugnd the silk

  A proton carries a

  The model of the atomqq cq)92 n+swm shows a

  A neutral atom always hasujc ul nq o,h*3-*w2jp

  An atom has more electrons than protons. The y. +k8)wu jqe,;bfletatom is

  Materials in which the electronsjs ;yus;oxsu3(s8f 2w are bound very tightly to the nuclei are referrys fsus( ;o83 2s;uxjwed to as

  Materials in which the electrons are bound very loosely tdtqm5pdn0; . d:pfri 5dvr2k3pnp +w8 o the nuclei and can move about freely within the d;n dpnft wpr ri .5:pp+d 0q3dv2mk58material are referred to as

  A negatively charged rod is brought near one end of an unchara 2a. g8x3l ewxg)qj;1 sypxh5ged metal bar. The end of the metalh1yea j .xx3 sagp5wxqg; )l28 bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is v cqf:j73jj :.itdwv(neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Whichjcwv:i: t7vj f jq3d(. statement is correct?

  How can a negatively charged rod charge a5m64 oesz uj5xn electroscope positively?

  An originally neutral electroscope is brifs-.res-iy-o. ; *stg2tcfvg efly touched with a positively charged ggs t-of. *rcty--f. s ;2veigslass rod. The electroscope

  An originally neutral electroscope is grounded brkt *:s9fsfqh oy ),wn5iefly while a positively charged glass rod is held near it. After the glass ro kft s5of,swyh:)nq9*d is removed, the electroscope

  A positive object touches a neutral electroscsj0 idz./lsu)7xfb6 0z xn q4wope, and the leaves separate. Then a negative object is brought near the electroscope, but does not )wsiqxx.s0 fbn /0u76j zld4 ztouch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A nel-9 ro ) 2c:w jbscufhay7pz4-utral 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 the negative object. What is the finallb-u94p ):2 hfc s7ozwy- cajr charge on each ball?

  Charge is

  What are the units of the Coul wws;0d6a1ey vomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by/ )y6gsg jxeg) a distance d. The first charge is larger in magni x yeg)j/gs6g)tude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near etb0ck -2r4np jach other on an insulated table. Which statement best describes the electnr2-pc4 k0j tbrostatic force between them?

  Two charged objects attract each otcm 87q rw .xns)yas5.lher with a certain force. If the charges on both objects are doubled with no change in separation, the force betwe r8.wslcm 5.a xsn7qy)en them

  Two charges are separated by a distance d and exert mutual attractive forcesoj trh36-3p y1 oszac3 of F on each other. If the charges are separated by a distance of d/3, 6 cjzoa33 3yr1pohs t-what are the new mutual forces?

  Two charged objects attrac.9glsa/b8m ar t 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 distance between their centers is reduced to one-fourth its original value? The force is nob9 lsa8a./m grw equal to

  An electron and a proton are separated by a distance of 1.08lw4q .j aqbkl.- s7tz m. What happens to the magnitudes..bzq8 llw -ktqa7 4j of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are y+pnze s2kl n8w e:w:*k9o: t+sv n4lqseparated 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 n kq9*p:+ly+4 8 e2vkwonez nn:swtsl :ext to the proton?

  An electron and a proton are separated by a dif;:py*mn2xl1, odwq 4v;hr5mnq h( dxstance of 1.0 m. What happens to the size of the force on t;15 ;d2 oq:(xqw,fn yhvx4n*m mdplrhhe proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the cente66cie o*o1ha nr 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 center. Now, identical charges of -Qoahon*ci 1 6e6 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 ofpy vq83ok vt59+7ige91zcjo64uzcf0zy* aax an equilateral triangle. 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 magnitude of the force that acts o iyx5qc0a9kv8+zj9 7g3e*zp61ouz t4a vcy fon the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vectorsb6d9kcs.s:a7 g *wzr kdv a4-?

  At twice the distance from a point charge, theq-z( 1e apqve( strength of the electric field

  Is it possible to have a zero electric field value b;7 q/zknrj bd7etween a negative and positive charge along thdn/r;7q7 zjkb e line joining the two charges?

  Is it possible to have a zero electric fieg5y iz;)xh:r 1xgt u3cr5k8no ld value between two positive charges along the lin5:k)uzgcx1o r 8 y;ri3nht5xge joining the two charges?

  Electric field lines near psit 5nuchy a ;lpdjq.;r)/gm7 ty7ive point charges

  The electric field show.m bi ye;csr5dwc+m ou84*) mt6/zifxn

  Can electric field lines intera beuivk7 2/* ad0u.aksect in free space?

  A solid block of metal in electrosdtw,i *ngm- .ltatic equilibrium is placed in a uniform electric field. Give a statement concerning the e .ilw -mgd*t,nlectric field in the block's interior.

  If a solid metal sphere an-k/yqr s t7w-saogc;(d a hollow metal sphere of equal diameters are each given the same charge, ther s ct/-kq( y;sgo-7aw 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 aov,4rzn 7c4z5+x7kp6dy*3d s p:mle re 0tqag uniform electric field is directed straight upward. What can be said concernkep73 aq4dgc0zer , p6*xyv:mdol 7+rtz 45sning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near 7xhmq9ifttkt t-g 2(,x pj7y5 an electric charge

  A positive point charge is enclosed in a hollow meta x*/ *wskgb: )x9fcjze hu1ow4llic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollowhw*: f )*1cuz9 bejowx4gxsk/ sphere has

State three properties0e )/anbwzd qpu12fa6 of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one eleca0zrbdyn ;s8;/ sg e*ltron 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 j,,x0j7a uvu qmore protons than electrons does this piece of plastic hujuja,70, qx vave?

  What is the charge on 1 kg of protoaoc+8nweja+4- ar j :w;)s gslns?

  An atomic nucleus has a j y/ 6c+8:n2lwk 6ku sddrjuhb4 go/9zcharge 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 val*hh * hjdzt+: 2dvwt)vues of 2.0 and -4.0 mC, respectively. What is the magnitude of the electri:)dz*jhw+*2 tt vhvhdc force between them?

  A 1.0-C charge is 15 m from gu xpa36qy 2b5p be g-f/pn*;ta second charge, and the force between them is 1.0 N. What is the magnitude of the second charge qepnta;52fxp b6gy- 3bu p/*g?

  Two 1.0-C charges have a force betwam48z gxu a/x-een them of 1.0 N. How far apart are they?

  The force between a c++ uc*cep*s g$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2 4+1my sg96 cnra ,k8pdwzzin fse3,,p.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electrikgza pn,s6mpifz,s+cewy 84,1 n 39rdc force between them?

  Three identical point chargeehs ,9 uhow*6hs 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 is at the 100 cm mark. h9es,* hhwou 6What 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 of +2.0 mC is placedr8 )wzo.j )daxx+d x+d 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 direction of the electrostatic force which acts on the chadox. x 8)zdx++)adwjrrge at the origin?

  Three point charges are locat;pk(jiparb8ft0t n u) uo;t1i( o)kxv;,qz+aed at the following positions: Q1 = 2.00 mC at x = 1.00 m;;pr),)t180o ukjux +bkt( ;p a(i;nvqi fatoz Q2 = 3.00 mC at x = 0; Q3 = -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 +ebq+h;fvn78i tjhh+ 2mc vn; is 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 force that acts on the center charge if a third charge of -Q is placed at the lower-leftihj2+ hm 8+7;vf hen;cnbv+qt corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.*0. ae cw soo0n)cw)gn.jyja;0 nC is at (0, 0). What is the magnitude of the net force on the ansj)ey0.aj*0cw .c n;wo og)5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1 uby)hcuar )yc/,9 t7utn1w izv409 dk.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force o,y wa)y cb4tn )d079ki curh1v/uut z9n the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of anem z(.lq8mw3w4n) lzo equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force wwezo4z l).m8 mnqwl(3hich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separatep( nb-tsng69bp a +ib(d by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q- bgbnp9s((6ai+ b pnt such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C cho)( fg( nbj2gnarge is at x = 4.0 m. Where on the x-axis can jo(g 2)bnn(gf a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q ixjshkd6e+r.dgx2 e9 .n e;)tws placed at x = 2a. Where can a third positive charge +q be placed so that the forn +;9srjgd.t)2ee xehdwx 6.k ce on it is zero?

  A copper penny has a mass of 3c w yr-omjj29hn4 j4s1 lv m,l/gd.o*w.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* k23t huooi:kue+gga. xc( s5 by the attraction of a fixed proton some distance above it. How far above the electrogikck 5 u+oo h2*x3g(:tu.e asn is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads ws 4l6h2xkhu+m- 7n 5sailu-nnhich are 30 cm long. Both h ms6nl-ksui5n7 a-hu xl24+nare 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 m 0ypygo:1cjjj74x4ljagnitude of the electric field at a distancjyy40:pjjg j1lx 47oce of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.50hmi 9ajcx5, cpe 2;,zd m from,i, j;az hc5mpc29 dxe a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is th lr dp6zr/9m qt 3 hla*gifv1m8z/7a/pe magnitude of the electric field at the lop8taq/z9gh lmr dr// 1f6 z7*liavmp3 cation of the test charge?

  A 5.0-C charge is 10 m from a small test 6wm030nqzbqus2 3nqt charge. What is the direction of the electric fieb6tq3s m0qq0nw 3z2n uld?

  A 5.0-C charge is 10 m from a small test charge. What is .6 v9ww2qmcnfem.v32k 1awoe the magnitude of the force experienced by a 1.0 n.mefk2 96v3.n wcvae m o1ww2qC charge placed at the location of the test charge?

  Two point charges each have a v xp5d/au2 /x y./3w1tus jgdc;o5ntnzalue of 3.0 C and are separated by a distance of zn aosx u/ 5wgt5dd / .t/;3nxju1ypc24.0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of fpik )b6 5oykx qf3o(k;vm+yz1kc n nnb*5)o8a meter stick and a -4.0 mC charge(fz y6pk+kbi*o k; y5om1n fock 5qvnn3)b8)x is 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 mark of a meter stick and a -4.0 f v4+ 9b9wygvsnl xuyb3f4 4k*mC charge is placed4*gw+ f9usfnlyy4b9v4v xbk 3 at the 50 cm mark. At 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 (h 1 ) ij -an1,elovmwyphkgbj6 5o*5yare placed at x = 0 and x = 0.20 m. What is the magn5wa(nmh6p5ykeivyg *o l,b-1oh1j )jitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the t:z -f9 ljiova 1pkyq/s:hz.q .hree corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squara sh: jkliv- /q9zp.oq.: y1zfe.

  Consider a square which is 1.0tw yhf4 pz;43vm(tnk2)o irx 5 m 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)h24x4tovkf(w i m3nzr;p5y t square's center?

  A force of 10 N acts bh2jq s3g (cdt- v4l7u*rz*zhon a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric(u 7-sc3z*dl4 hqzj 2gv*rbth field?

  A particle with a charge of yet;uc0*75u78p1 funmhe ybb 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 electriq 5.yf *oii2qcyhot;-5s 70g4 ojicxfc field of 6000 N/C pointing downward. What charge mu yf5 25c *ii;fxyhci0qo g-j. 7o4qtsost be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball 0 m wbn ckm7j6z1n-4ul2gys6cis placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electr ju71ykg2 mnlz6-w6c cnmb04sic field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. pfm sa/2,lb7 59xdlu+fj be 5qn;lh,mWhat is the magnitude of the electric field 5.0 cm from tl5ufx d9h+,ap bqj2el; 5 mnbf7s/, lmhe sphere's surface?

  A metal sphere of radiuz smn05+sh al)vqx +ibm,j p65s 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center zps6vm n5++hml5 x,) 0jbsiaqof the sphere?