State the law of conservation of electric chb3ss0 :6op jxparge.

  Is it possible for two negative charges to attsy6f0l qv c7e*ract each other?

  Is it possible for a positive andiyqh22rh 4bu27ld zhh,py 8 h2 a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Duringq/f rur*iy ;;qk(w /iv the process the glass rod acquires a positive charge and the sil (* rky/riiw;qu q;fv/k

  A proton carries a

  The model of the atom shi p+ne 9t4p3ysdeftw/7j(9ln ows a

  A neutral atom alwaym 9fo.cl7 0vdwrzm9 x,s has

  An atom has more electrons than protons. The atom 0-rrde g 70ixqis

  Materials in which the elec(;o(pgal7ywob b4srnwd)yj r ov.28 ,trons are bound very tightly to the nuclei are referred to as(nbro. dysgpw;y 28 ()4o 7vrb,awoj l

  Materials in which the electrons are bound ver:/th,dy zen5 nsg6q 8ty loosely to the nuclei and can move about8dyn5t: q/gshz nte6, freely within the material are referred to as

  A negatively charged rod is brought near one end of zg63ewf 6xncl93 .atkt 8, evaan uncharged metal bar. The end of the metal bar farthest from the charged rtz9g36v3n t kex. 8ca6,aw lfeod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pl1 ;a6u6b x*udk3k boohaced near each other on an insulated table. Sphere B is bb*6d ;akxu hob613 kuoriefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chargedl*4jzrb3 qvpg y74z8b rod charge an electroscope positively?

  An originally neutral electro. h+ l0yjgpl q:m:w, d.edoo 9a.p.nvmscope is briefly touched with a positively charged glass m:j,hqwpeo.ov d: llypn.. 90mg.d a+ rod. The electroscope

  An originally neutral electroscope is grounded briefly whuqmx*mx: p,)qst zl75ile a positively charged glass rod im z spxx)l5* m,q:q7uts held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the3c 8il9i-l odz leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the le8z 9i ldi-co3laves?

  A large negatively charged object is placed on an insulatet-w42+ beqzy. zkqucgj)ia8 + d table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along t4 u c8gw)aejbziz+yt-qk2 +q. he 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 Cou8 b /bzyeqx1; qssw67df/eee ;lomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge in 7-np z).x/mfc22 nkub,hjypcg. f/ ps larger in magnigm f,u-2pk2yn//pc.zpb ) xf nnh.jc7tude than the second charge.

  Sphere A carries a net charge anme4, ;pz ;*,d p4lwwq 1qw44wldbsvhzd sphere B is neutral. They are placed near each other on an insulated table. 4,4e hs4d l;4lw m;w*wd z,qb1wvpqpz Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. e:cyba4e 3vi6 If the charges on both objects are doubled with 6ac:4b3yev e ino change in separation, the force between them

  Two charges are separated byw0eu( nye/,m d a distance d and exert mutual attractive forces of F on each other. If the chargu(yn,e0de/w mes are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What ha4njoc.9wyf/tjwue*j448 )lb7qa m zyppens to the force between them if one charge is doubled, the other charge is tripled, and thu.f4q/ne4 yy8*z9mwt )w7 4jcaolbjj e separation distance 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 1.0a4 *ynd xr c/6iyy7cc7 m. What happens to the magnitude of the force on the proton if y*drxain7c 76y 4/cyca second electron is placed next to the first electron?

  An electron and a proton are s*.acvmd-xxu , 2eyqwcj, 5: gteparated by a distance of 1.0 m. What happens to the magnitude of-wm *je,.y:td cx5 vquc 2xga, the force 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 hap flc5 ly8c/1gc1jbb3kpens to the size of the force on the proton if the electronc3yk8 blbfcl5 cj11 /g is moved 0.50 m closer to the proton?

  A point charge of +Q is placesq il 72hofuj2kt(a yw. p,g.)d at the center of a square. When a second point chahyg )(, sktql2u.oi.w7fa j2prge 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 -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 triangl4cv.7gzxe 1t ze. 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 fo41ez 7tx zcgv.rce that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following isu pdaehd;/ ahmv20b+5u 3 5yev not a vector?

  At twice the distance from a point charge,0gv gd;- .thus the strength of the electric field

  Is it possible to have a zero electric field vincea(:f prhk 36uy+3alue between a negative and positive char3+a:cneri ph (f 6kuy3ge along the line joining the two charges?

  Is it possible to have a zero electric field value between two pos-baok -m omq:-itive charges along the lineqob-a-mmok -: joining the two charges?

  Electric field lines nearfg7s6un.w1 a rh3 xiz0 psitive point charges

  The electric field shown .; g0. 4c)dyu,k4y jqwmufh3p prl7 lm

  Can electric field li-g8 oi/n3.ar px:iftj nes intersect in free space?

  A solid block of metal in electrostatic equilibv p)k 5:gl j+8s,vdjparium is placed in a uniform electric field. Give a staa+8 jgvl5d j k:)pv,sptement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamet sc uccc+:o00qers are each givencu:0o0 + sqccc the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tabl dr/n a7k9armu 4scg:gd ct76,e in a region where a uniform electric field is direc7u/ :9grca6drd ns m,4k7g atcted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium n, 0cx pihw,:miear an electric charge

  A positive point charge is enclosed in a hollocvqpjo0* n 5h4w metallic sphere that is grounded. As compared to the case without the hollow spherc p40ohjn5v*q e, the electric field at a point directly above the hollow sphere has

State three properties ofb6 -ay qfhpl4o 9)hjf( conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron ig4id+yu2mc k; q(a g;ks $e = -1.6 \times 10^{-19} \; C$. 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 protons than e (h+buwr/pz,5 prhv3 ulectrons does this piece of plastzbh rw/+( hv5puu rp3,ic have?

  What is the charge on 1 kg of6qnjj 5,g c;ug protons?

  An atomic nucleus has a,yfjd75k* qbe 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,)ozqx-s4uk : h have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric for4-z shqxou:k)ce between them?

  A 1.0-C charge is 15 m from a sp6p51fwkv d:ci+ -fguk r /5xxq1l bs3econd charge, and the force between them is 1.0 N. What is the magnitude ox6-c rq13l/ifpu w5 f+k x:bspgd51kvf the second charge?

  Two 1.0-C charges har/bdyj9-1 uow ve a force between them of 1.0 N. How far apart are they?

  The force between a 9 ,jya2shx we3$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm l ). oie5xl*bx sin+g0jmg:j*apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between the i):*.o+b x*lgi5lgejm sx0n jm?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fir8wy:8j p1w. izkjf n-gst charge is at the origin, the 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 tz8-jj 1:yf.p igwwnk8he origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is plac0jx b+o+3i p7 yqx0icsed 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 opb joyc+sx3 i7+0iqx0 n the charge at the origin?

  Three point charges are located at the fogh:c+ips xj0 ppmp19 3llowing 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 th31j0gis p p9h+c :xppme magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, an 5/+tqqx(g8-)hvkwsrm i:8yfj r4 yfid 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 th5q/tii4 :xw 8jfmrs+ry-fv 8)y(gkhqe 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 is at,,s6v-tmda dh0fdddn)yw+p+.s sl n6 (0, 0). What is the magnitude of the6n+dn), d yatdpsfhd6dmls s.w 0,- +v 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 is a./ j0y o+pmn5w9rvhzk t (0, 0). What is the direction of the net force on the 5.0 nCk.j+0zyv5rw 9/on hm p charge?

  Three identical charges of 3.0 mC i )1p ah+d(qy08tajvldi v4 )li/ ny,jare placed at the vertices of an equilateral triangle which measures 30 cm oldqa(i)yl, jn 0d) pi/ yj4hv8+iva1tn a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges 5uecarl :jd88 psi. r8of +Q and +4Q, which are 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 t :du5pi8la8.r8j s crehe electrostatic force 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. gq9m.s3b:r:r pxgrd 7c lv.d6Where on the x-axis can a third charge be placed so the net force on it is zg9 :s. r xlm:.6ddbc g73qpvrrero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whe80v j)wcz5hog re can a third positive charge +q be placed so that the fjcgv85wzho ) 0orce on it is zero?

  A copper penny has a mass of 3.0 g. A total ofi(j vc to)fco70 l(/ yjxzcc5- $4.0 \times 10^{12} \; electrons$ 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 attraction otm2uxw8 a .f o(fw5j6if a fixed proton some distance 68omwf a. wjitf 2ux(5above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by no-2xaoyge s f 1/w*x)sgnconducting threads whsef)2xxg1s ya *ow/-gich 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 the eqbsfo,r6hu i,uk/ e+8:3pqn mlectric field at a distance of 1.0 m fohneu br/8qp+ :,k6 ,i3uqfsmrom the nucleus?

  What are the magnitude sq;2ps r 2f 0m6z9e+zze aty(pand direction of the electric field at a distance of 1.50 m from a 50.0t2;s6 ap2m0e qr+pyz9eszf (z-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitug-9 gisqz.pt51 a)mv3wbxu 1aj12vzn de of the electpgxw51zvaqtsun9 z va21jg.)i m3b -1ric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small tesf/ d7a6qnbm,zt charge. What is the direction of the el 7,dq/6nfma zbectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudera ai*6 6qos8t of the force qa 6t6ai*so8rexperienced by 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 arb9ua/u b3c7 un *+bckhe separated by a distance of 4.0 m. What is the electric field at a point midway betwee3/u7+cabb nubk 9hc*un the two charges?

  A 5.0-mC charge is placed at the 0 sy,jt (v1e2)r xh ynr9cm mark 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 ,tyyh(evx jrr2s)n 19mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC ca;h qkg6in0.yot;m + charge is placed at thgk nqo; chyt+;m .i0a6e 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 are placed at x = 0 and x = 0.20 m.top:hq+42kvsy..at x What is the magnitude of the electric fiel4:tos.xv.ykat hq2 p+ d at the point midway between them?

  Three 3.0 mC charges are at j 4uhec(8t 3bxthe three 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 ehtux j4(b83cof the square.

  Consider a square which is 1.a*6xvuext8z k4+m4n1ham *+ j8wcn hc0 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 fi8*nt4 4+wnxavh+h *xcmmjcu68kz e1 a eld at the square's center?

  A force of 10 N acts on :n-ot6b sy+afa charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitudto:- bsf6a+n ye of this electric field?

  A particle with a charge of 4.0 mC has a masd yszwgu0jx5.:7 kgb4s of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass0ojtg(b +x lv0 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be su j+ lxvbo00(gtspended?

  A foam ball of mass 0.150 g carries a charge of -2.cfu)u-e4gu jfdzcq+ 0:hc 8:q00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of tfhc0fd+c-c:4u8zque:j)u g q he electric field?

  A metal sphere of radius 10 cm carries a charge o*e) 4 k paklmy hs0k+o*k3k0bd3 mjv-gz a0e5nf +2.0 mC. What is the magnitude of the electric field 5vhe osk5me 0 -d4jkkn3+ k)p0yba kgl3a*mz *0.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge olk :sq,rjshqaws4 :gx /;:w b0f 3.0 mC. What is the electric f/sw4q ls b0x gsa:,:kqwhjr:;ield 6.0 cm from the center of the sphere?