State the law of conx .q pp-8ef 8tn0myy6hservation of electric charge.

  Is it possible for two negative charges to attract each ot.ev0oh-f4s w zher?

  Is it possible for a positive anaz4g9 9uczs ;do;nnyb b75o y5lhqn+8d a negative charge to attract each other?

  A glass rod is rubbed with a piec;q i/(bck8a3i .(cc ,va ,zwrj(fzcyn e of silk. During the process the glass rod acquires a positive charge wbcnj, vz(k.qyic8 i c,(raf/a3;( zcand the silk

  A proton carries a

  The model of the atom sh1qr zlua uu(/er-s6a:ows a

  A neutral atom alway 6q-+pxxx.engs has

  An atom has more electrons than protons0d39ui x9e;w: 8yn*defe oix j. The atom is

  Materials in which the electrons are bound very tightly to thq 404 s4 jag8lvsfw(5l qje2vge nuclei are referred to 5ga(jql2 8sv lwsg 04 4j4vfeqas

  Materials in which the electrons are bound very loosely 2 thy0ea)j.8 z1lr;agqj-c 2ojca3hzto the nuclei and can move a-qz )c3cgt jh z ay81rl0;.ae2j2oajhbout freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. The:krbn3 lnc c-s),qcs3ts 7+uq end of th kc n)7qu, nsc-+qrb s:l3c3tse metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutra d7u; hy(tuur1 hr(y9kl. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which s1kuy9(thr;rud u7( yhtatement is correct?

  How can a negatively charged rod charge an electrosco./w7+ij w /ayezr)tabpe positively?

  An originally neutral electroscope is briefly touched with a positively c *kf(kuj0sjv+ harged glass rod. vk*jsf 0uj+k( The electroscope

  An originally neutral electroscope ishj-f :ed0 pbvwsyd-) : grounded briefly while a positively charged glass rod is held near it. After the j--:)d bev:dwf0sy p hglass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and-gwt5j 8i4rx d the leaves separate. Then a negative object is brought near the electroscope, but does not twxd 5r-jg84it ouch it. What happens to the leaves?

  A large negatively charg,b dk3,hw77o/eykyfh ed object is placed on an insulated table. A neutral 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,y7/he h oyk, dfb7kw3 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 Coulomb co uzi3-8 rbrgh5nstant $k$, which appears in Coulomb's law?

  Two charged objects are sevq4yg,l xq d94e;3sbvparated by a distance d. The first charge is larger in magnitud b93dq 4 vleqv;xs,g4ye than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nea3* bj/uwlrg. ngw6o z(r each other on an insulated table. Which statement best descl/(*g3w6 bon.gwzurj ribes the electrostatic force between them?

  Two charged objects attrac;; ;,laaw jtwht each other with a certain force. If the charges on both objects are doubled with no change in separa; ;tlwwah,ja;tion, the force between them

  Two charges are separated by a distance d and exert mutual attractive f;brqo+ uolgvmfqj6u(rd2c+ )y)2js0 orces of F on each other. If the charges are separated by a distance of d/3, what are thbrg0o2d+2 jusuq()o j+); v6 cly mfqre new mutual forces?

  Two charged objects attract each other with a force F. What happens toua(99 5zto)wf az (lxm 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? f(mwaa)(tl9 u z 5o9zx The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens to (2kip, fh3lhj;a+:pvyo ogx gvj/km7.(b2 kw the magnitude of the force on the proton if a second electron is placed next to the j,hk7+yk(lv .o2;vhx/ g(2 :oak3fp bwmijgpfirst electron?

  An electron and a proton are separated by a distance of 1.0 m. What haz/k ht7,9mj1jd + nmfoppens to the magnitude o7+9hfk ojd/nz,mm tj1f 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 distanc2wjy t hdv43g- c56clie of 1.0 m. What happens to theg jv54td6 w-yccilh3 2 size 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. When a seconxbzs,.4*9nm 4k yxvu bd 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 -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 squa yvb x.*x,us44mb9k nzre?

  A point charge of +Q is placed at the centroj0muy/:u1 zhu id of 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 on thmuyu 0:hjzu1 /e center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vector?6ql pfvz (nm5+

  At twice the distanceuipn q8 g/m+)b from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value betwewynd- c t5qb*+en a negative and positive charge along the line joinin+- cd5bwny *qtg the two charges?

  Is it possible to have a zero electric field vai7lmz.(h4pj htv4 ujwu2 69x5(sdyqhlue between two positive charges along the line joining the two ch i vwh4jh4m.((t5l2qd hx6suup 97 zjyarges?

  Electric field lines near psitive point charge pvod0w4yn2: ka0fb q(s

  The electric field sho 9zvhr,xirwq 1q,5kq1wn

  Can electric field lines i.: n2onhkp 8 60j1hftd.bcadys 6 d7ufntersect in free space?

  A solid block of metal in electrostatic equilibrium isst 6z8dp l ,,of*c7popz9bf b1 placed in a uniform electric field. Give a statement concerning the electricd8,bo*z ptp7 6c1o,fb spfl z9 field in the block's interior.

  If a solid metal sphere and a hollowkz f); dqny(s, metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface isd(fzn ,;k)yq s

  A cubic block of aluminum)+ dnwqg /qox2 -j/fki rests on a wooden table in a region where a uniform electric field is directed straightqo-)jxf+w/n/g2i kq d upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equi 2wpb 0jspo 3/78tvtcalibrium near an electric charge

  A positive point charge is encloa72 cy4c +c rdmg2,ibssed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point scrb+4 2cgi72yd ,amcdirectly above the hollow sphere has

State three properties of conductors in static equilibriu78twda(o(zkd* - /3z *l7ymf jt0w hfeky0xob m.

State Gauss's law.

  The charge carried by one elec:yn/n6mpao)pu 3v0p fh gy)8ki;-hjftron 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 chargew c45.q )fp8mxfb;col of +2.00 mC. How many more protons than electrons does this pi ocl4m8cf)wbq x5;p f.ece of plastic have?

  What is the charge oo t;7p7wivnr, :q ,bm6y/zram3fs8 pdn 1 kg of protons?

  An atomic nucleus has a c: 8bl tapj+ *vim9m/xv,lny9 rle(cm 6harge 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 of 2.6yr1 l/de 7x d:evyq 6+arerh60 and -4.0 mC, respectively. What is the magnitud1/+:ey6el r 6 xdr rd7va6heyqe of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.+ik kf7l-zh7x0 N. What is the magnitude of the second chargei7x k+k-f7z hl?

  Two 1.0-C charges have a force betweex43yqul 4er-f xo(: j34whlebn them of 1.0 N. How far apart are they?

  The force between a 3 plr..sq,jei$30 \; mC$ 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 foryavt4 psdymt) bya:/+5 g xdsrd(/+*ace. If they are moved to a new separation of 8.0 cm, what is the el/5y*mpa(dy)4t+ vx arsgs/b :dy+dtaectric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The tzoyo)j dalaq6 ju46y6 b4p99lpfo5/first charge is at the origin, the second to ft 4q66yly9 )plpod5/ juoa46b 9ojzathe 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. A charge odf ,og94f;di-qp;dmw f +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 mdpi-4q,mfd;w; g9fdoark. 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: np -qmcpqt,,zl4 tsk0/ 9 ld29jinji: 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. ltz n4ctnlijqki,j9m/9sd, 0 2p- :q pWhat is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at t;uypzszj0adl)v4 tiso: b ,zl1mt04)he 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 1usp 4b y:j4l))s0,tmt zozvldiaz;0on 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 = ;gzp 2(oesie,p( wbb2 5.0 nC is at (0, 0). What is the magnitude of the net fop g(ee(;bs2 ib,zow p2rce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); -3uoih9ifb 9rw( qc,uq,0jm) cnaku-Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the,,)mjruk iaui q9wc -n 0q3h-(fu9cbo net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vert.big-vr 5oz27 - ewjvtices of an equilateral triangle which measures 30 cm on 2jt-bi- e.rvv7ozg5w a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, we ;1j2 62le0gfrhte7tql/k3 mal)vd ahich 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 the elqgjelefev kr1a; 23/t2 a l6l7) th0dmectrostatic 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 =cwuw 6du. 23gf 4.0 m. Where on the x-axis can a third charge be pla6u3d.wcw 2ugfced so the net force on it is zero?

  Charge +2q is placed at ne2u p24n 1r )prnr8ulthe origin and charge -q is placed at x = 2a. Where can a third positive charge +q281nu pn)4rerr p2u nl be placed so that the force on it is zero?

  A copper penny has a mass of 3.t9 sl d8au)w5 7tn ,bgwhw*cf50 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 g12,m,almhv9kc 9t ampravity by the attraction of a fixed proton some distance above it. How far above the electron is the proton?m9,mlahc2 ,apm 1kt9v

  Two 0.20-g metal spheres are hung from a common point bye*9rbw(u40)uqrts)b vj9i 2yb k0q xlo:zzo - nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between t q90e)*zbkvou t 4(29luwb):s jirrx q oybz0-he threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. Whaf8u8p nx.1krunu ,v8z4 fm; ett is the magnitude of the electric field at a distance of 1.0 m from ;n,.mffu4 8k8vneur8x u1t pzthe nucleus?

  What are the magnitude and direction ofh ;jt ae:zc:j6 the electric field at a distance of 1.50 m from z t:e6a;cj:jh a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the e2;rgk 4w(iitwgq,g)hv 4 8le magnitude of the electric field at the location of the test charwi ;k)ve8(hgwt lgq2rg4e 4 ,ige?

  A 5.0-C charge is 10 m fr+v2cz4 xvrs *oom a small test charge. What is the direction of the electric fi4vzsx o2rc*+v eld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude *g 7ys6l;chkoof the force experienced by a 1.0 nC charge placed7syh 6c*ko ;lg at the location of the test charge?

  Two point charges each have a value of 3.0 C and arbzy cd/yt,v.1o fou02e separated by a distance of 4.0 m. What is the electric field atc2 odv/t yuzyo0., 1fb a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC ;b .99*bvygk)ybo6glte1 wr p charge is placed at the 50 cm mark. What is 6;b9b *1ko.lep twyg rb9y)vg the electric field at the 30 cm mark?

  A 5.0-mC charge is plb0o,)qjg; +3vanno miaced at the 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,nj0;v)qio3+ n moga b the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed y;an ;stq+;3lsi dbx7at x = 0 and x = 0.20 m. What is the magnitude of the electric field at t+ d t qnl;;b7;xsa3syihe point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sidkdtj)wpk3 2v. e 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the s.kpvdjkt)3 2w quare.

  Consider a square which is 1.0 m on a sideix7;klkc; )c c. 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 t x);kic7k c;lche square's center?

  A force of 10 N acts on a charge of 5pq. uhd+t-l9+p.m:1ipha 38xqwk /ew/vhw ai .0 mC when it is placed in a uniform electric field. What is the magnitude o+a/wq3ul.h.wqa-v x/p 1k ip h+e dti8h9pw:mf this electric field?

  A particle with a chargevx 3re0 wc5gyi6 vci5qem 3-+l of 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 plac uozg+ br j9.*l0y6giked in an electric field of 6000 N/C pointing downward. What charr*u. 0ilyo 96gzg+ bjkge must be placed on the ball for it to be suspended?

  A foam ball of mass 09wwgicvk 7 (f8y to4k9.150 g carries a charge of -2.00 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 the elec7v 9gyw9it (okw 4kf8ctric field?

  A metal sphere of radius 10 y4*q.9qkrw fq8f ekm6 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfak e96fkmq wfr4.* q8yqce?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC.s6* +uvl+hx aq++(li w) nvrvl What is the electric field 6.0 cm from the center of the sphlu( +al)6 l+hqx*r+ wi+vvsvn ere?