State the law of conservatx f;40mjg:,rbutut(c ion of electric charge.

  Is it possible for two negative charges to attract each othe7i-lk 8z jdd-. hmos;djei0 chw:w w56x. i*exr?

  Is it possible for a positive and a negative cuhp-5 +iro tr8harge to attract each other?

  A glass rod is rubbed with a piepcuynn2fbqoz hw +6l 15c 4;u-ce of silk. During the process the glass rod acquires a positive charge and th 5 oqcf-;cl4 bp2ny 6uh1w+nzue silk

  A proton carries a

  The model of the atom show861/um m)gct )ksk2x fb6xbf7znc2 dds a

  A neutral atom alwaygoz :po*hl(caa:x :3ts has

  An atom has more electrodd.onnds ,k7ca6y o,* ns than protons. The atom is

  Materials in which the el(s3()cucf wtnectrons are bound very tightly to the nuclei are referred to ( swuc 3n(cft)as

  Materials in which the electrons aree o(ow-a8 4zrwm-ouz 3sjg4 :z bound very loosely to the nuclei and can move about freely within the material are rsoaoj zr 3wg-: zm4ew4zo8- (ueferred to as

  A negatively charged rod is fq1xiqpc. eo-xp;q6 w1 i l:0jbrought near one end of an uncharged metal bar. The1.q cpqw06f:-oe x1jl;ipqi x end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive chargec: i)ocv zhk6(/mt0sl , and sphere B is neutral. They are placedcl(k) t:6izo0cs v /mh near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an er h(j:0qgqy9klectroscope positively?

  An originally neutral electroscope i s*q pz9/v/du q43xx+pxyzr-os briefly touched with a positively charged glaoxu*zxz/ s v qy9 4/pdxq3+-prss rod. The electroscope

  An originally neutral electroscn * pzxk9t,lr8ope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electroscopenp,r z8*txlk 9

  A positive object touches a neutral electroscope, and 0e7ir b+zu1 io.vze6v the leaves separate. Then a negative object is brought near the electroscope, but does not tv1ev0 e b7 iuior+6zz.ouch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral mdj7or:h p5 ma g 2+(.*apnbev/gif1eyetallic 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 final chadni (ohm71ey/ger :p2+gv .5 j*aafbp rge on each ball?

  Charge is

  What are the units of the Coulomb constant fd2zsp0c 0j trz9 bkc48) n p*cd,teu*$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d.:gs9,yd7zjmlu;70hqt b 2txp The first charge is larger in magnitude than thex 0tlus y:t z2gm9dqpj7;bh7 , second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed ne39+u ys bt1iqg42b pomar each other on an insulated table. Which statement best describes the electrostatic force betweenbmb291oy+gt4 u ip3 qs them?

  Two charged objects attract each u8 u2sq0dq wd/)9bdkp other with a certain force. If the charges on both objects are doubled with no change bd/wuqk dq2ds0 u )p98in separation, the force between them

  Two charges are separated by a dixl9-j 5( undhmstance d and exert mutual attractive forces of F on each otherd x n(lu5j9hm-. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects att./h .( ebonbvyract each other with a force F. What happens to the force between them if one charge is doubled, the other ch .b. e(yoh/bvnarge is tripled, and the 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 d*p)aa w3se d;by a distance of 1.0 m. What happens to the magnitude of the fora pa; 3s)edw*dce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are selxgw +uclw4/ .parated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second eleu. /wcg+ lwl4xctron is placed next to the proton?

  An electron and a proton are separated by a distanczza oezps:k.1, af2i,m c6ei )e of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the protis o)ka:iea6mz .ep c,fz,z2 1on?

  A point charge of +Q is placed a)n (9f5/v1nvxt plfp xt 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 2.0pxvxn (f/n 9)1f5vtl p 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. r*p p 8gd 8 j:/raur;;dad*rpy When a second chajdyu*/ rrg ;:;rda* d8pp8rpa rge 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 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 f125cguzyuu +dy ut* -vector?

  At twice the distance from a point charge,z. kcz)y .xz1mq( e9v-r )5tph tm.irb the strength of the electric field

  Is it possible to have a zero electric field value between a pyb2 q)14btslnegative and positive charge along the line joply4tb qb1)2sining the two charges?

  Is it possible to have a zero electric field value between two positive9 8f5djzdph2 ral)(9tzqrr z0 charges along t8q ) dzrf29ltdprzjhzar509 (he line joining the two charges?

  Electric field lines near psitive poin4fe04 v*wyfwmq uw1qsgy k;1+ t charges

  The electric field shek:8 a+te ,z pp bkcay/r7p,6jown

  Can electric field lines intersec; (mr pwnge)f;t in free space?

  A solid block of metal in electrostaticknq-pb.(uu - y equilibrium is placed in a uniform electric fi .uk-npqyb( u-eld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal di6ciht-ij b37i4mzk d;/g2zuv5p; bgqameters are each given the same charge, the electric field (E) midway between the center and the surface ish k pct4 ; z igi;bzb/3q-562iugv7jdm

  A cubic block of aluminum restsx*0+k*sn vqpmy kuol r 2o92x5 on a wooden table in a region where a uniform electric field is directed straight upward. What can be 2n0xvrkox +*o59qpk ul 2*ysmsaid concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near gyk/n ka6 q,l,e37f 7l cv-njeh 07vhlan electric charge

  A positive point charge is enclosed in a hollow metallicf/4bpiiz: k q2 sphere that is grounded. Asip2q/zi 4 :bfk compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equili ,howmrk34m t/brium.

State Gauss's law.

  The charge carried by one electro:rwd*t z1rq:z3g d1ugn 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. How2)k-e dja,gp c many more protons than electrons does this piecpg aj-d2,)kece of plastic have?

  What is the charge on 1 kg o;w- -7ilx *asrirkbv9f protons?

  An atomic nucleus has a;i u6ahd++zf ay8pz0yv*b xk/ 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 ofek3ed3pv l :yxs ,i9b6 2.0 and -4.0 mC, respectively. What is the magnitude of the electric foy ix6e, lb3:vpes9 d3krce between them?

  A 1.0-C charge is 15 m from a second charge, ang. w,t2mbfq27m zf iu6d the force between them is 1.0 N. What is the maf 6f2wutbz. gmim2,q7gnitude of the second charge?

  Two 1.0-C charges have a force between them e(ftlbbnwi4o6e *9u1+nt+ iu4g z; frof 1.0 N. How far apart are they?

  The force between a tbv pf3il *rv-qw27p 4xn c0l1$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N force. If they a*6 eg;iu m,u*speg 8jtre mu t6g*8gius; mj *pe,eoved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cha 9. 4ajqzqq)5ed4azhzrge is at the originq.hae5az zd )z9q44qj, 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 the origin?

  Three point charges are placed on the x-axis. Ab82zv l.ersdg/+r gp;y1t )ia 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 lp avb1)t.g/8yrgd r ;si2ez+ 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 located at the following pos +1(zzcso ,9u jjniq9ritions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -,szq9c 1j+roij( 9 unz5.00 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 place;maeyrf .2po 5d at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It 2m fa;oe.ryp5is 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-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -9q))afpzu9k aw t l+e(6ie,gy1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitudpf6a()tziu wga +el99 k) yeq,e 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 (0, 0.10 m); Q3 :4l (vwd0rxi s= 5.0 nC is at (0, 0). Ws(id0:lv r4x 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 vhyw mrwf1hp73 u7/;swertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?rws3 m/p1yu;hwh 77f w

  Consider point charges of +Q and +4Q, which are (mx6e 8kwclr:qofv p n*9bw ),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 m(8*p r96)wnbwf c,x ekoql:v the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is atg,/b 2x/ d*mv:xs(y3qz1cp o vqk-qbf x = 4.0 m. Where on the x-axis cazcs3k gox,qbxq /:v-qy( *vd1/ pfb2mn a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q dmg 4dcg4sul-2m:yx.is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is - 4u2s4m gx ydldg:c.mzero?

  A copper penny has a mass )gb3by6eivpga--um a;r c75 k of 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 u i;ungg(2 bj p+ggj7h4-bk8gki-)dwup against the force of gravity by the attraction of a fixed proton some distance ab u ( hdig+w)2bug8nkbgip-4jg7;kgj-ove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common pk ud8hxd0bv9 u5+ cb+rsvt.j- oint by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the +dubk 8tvdvbh 0+su5 9cr-x.j 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 ukft//,m szn g-buw3 .electric field at a distancebk/. f wst- u/gn,uzm3 of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of njr;ed 3( i /:nkzdf6 e2,iruy1.50 m from anr ( /zn;:edd ye3u2 fj6,krii 50.0-nC charge?

  A 5.0-C charge is 10 m from a smallildo 95b9y0xw test charge. What is the magnitude of the electric field a9l 5b yiwx0d9ot the location of the test charge?

  A 5.0-C charge is 10 m from a smk3pqxb/04 )k* iwytoq all test charge. What is the direction of the el o)3ypqt q *i/4x0kbkwectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude* -oc6uf:hp 1 n1nnegq am*lbg6+p z)v of the force experinohpnngf*b *lzcg1:- ) e 6qp1aumv 6+enced 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 are separated by a distance g l0 logz0j09qof 4.0 mllzo jg9gq0 00. 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 a meter stick and a7 geecq.sgv) 2 -4.0 mC charge igv) seq g2.7ces 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 malru*ou3 wo5pv-4m(tn rk 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 eltrl*u 345n mouwp(-voectric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x =lxo)8 j0 k5c isrpk10xx:dl.o 0.20 m. What is the magnitude of the electri.0 o)08:kkpxoli1jcx lds5 rx c field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 0;g ite9 v5fbcna3 ka2m. The last corner is occupied by a -3.0 mC charge. Find th 0vkngea 295 ciabft3;e electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners ojrb-*rbdyqe0 l9llt7ih, +0 zf the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); h7rzl il+*,90qlebb0jy tdr--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 ra67wc0if i :cmfrq7, in a uniform electric fc6r wq707: ,ffacrmii ield. What is the magnitude of this electric field?

  A particle with a charge oxu:e8 im ntals82p c,(f 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 600 mhfim).. p2va0 N/C pointing downward. What charge must be placed on the ball for it to bf)vh.i. pa mm2e suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The bb4h9 l bg tlv2hwl5/p;all is placed inside a uniform electric field, and is suspended against the force of gravity. Wha blp54/v;htlh l2gb9w t are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Whatqw5cpb*1- i.mxx :9v0aotzmy/ 4xk 63m pskjo is the magnitude of the electric field 5.0 cm from the spher9tw/.0bckyaim 6zpkp xsoo:-v 531xx*mq 4 jme's surface?

  A metal sphere of rad1bqv/iyn d2p /ius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm frqb1/ 2pdniyv/om the center of the sphere?