State the law of conservation of electric charge.b 06b(dt/tjpo

  Is it possible for two negative charges to attravhyu+pf7ui.72pd5 if+qv jj0xe1r 9 ect each other?

  Is it possible for a positive and a negative charge to a1g s,fpyi9x q1qclu/ /ttract each other?

  A glass rod is rubbed with a piece of silk.d jk(k,+ xvne8) l0piv During the process the glass rod acquires a positive charge and t08 nivp(+)lv,exj dkkhe silk

  A proton carries a

  The model of the atom s(zsvv6cj wja 89/ j4kjnv8.b rhows a

  A neutral atom alway+p vg,z h7a4brs has

  An atom has more electrons thannt:h87h0q uje/ml z0h bmj7: p7f 4slp protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are referr a2 i1,cz.g b thdp62-tn7vqysc l2d.ked to acvz2.2gqp27 ydt -,ks.h1ctaibnl6 ds

  Materials in which the electro*kond i;wyl,jpow9e (7*hh flh 7uq, ,ns are bound very loosely to the nuclei and can move about freely w9hieuhfkdq,j,7owy, l; *h(w7ln* opithin the material are referred to as

  A negatively charged rod isg uh5bsqu+w2 /i q;hz) brought near one end of an uncharged metal bar. The end of the metal bar farthe uz)bq5i/guw;h+s2 qh st from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neuq i n9:o5jbot-tral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement iq -oboi 5t9nj:s correct?

  How can a negatively charged rod charge an electroscogzxm1,sjl(x3 pe positively?

  An originally neutral electroscope is brief,geyxt9f lh2m on p),3ly touched with a positively charged glass rod. 9noxypm,, eg)l2fht3 The electroscope

  An originally neutral electroscope is n,jm/zhj*5k) oy +vnd grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the +5m yjd,)nz*/hovkj n electroscope

  A positive object touches a neutral electroscope, and the leavehvf2w3 .x9:ojxtao. gs separate. Then a negative object ifxwg9hvo: .t23oja. xs brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charuzz- fsy8 26amged object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touch m-yzu 2fa8s6zes 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 charge on each ball?

  Charge is

  What are the units o1br+kp dkit ,*f the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects arl zbjr9o 1)g7pqgph w*ofz3:51 /s xrie separated by a distance d. The first charge is larger in magnitude than the se3zo s17pb/ 9r5)ogwxihj*r f:l1gq z pcond charge.

  Sphere A carries a net charge and sphere B is neutral. Thm vfkzlh(; c*54 c0sq9q vomp:ey are placed near each other op 40: ( h*z kq9c5ovlqfscmm;vn an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain for+. bm1ypc ijw3ce. If the charges on both objects are doubled with no change in sepa3m.1y bc+ipw jration, the force between them

  Two charges are separated by a distance d and exert mutual attract q wut/vybt ;b0do*)4rio4 kj3ive forces of F on eacd)tw k t*4 b0uyrb4o/i 3;vjqoh other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other wqn8xqjs1 7+t5te7bxv fhx7a mlj,x: (ith a force F. What happens to the force between them if onfj,7jmvt7st5 a7 bxxex8(q qnx h:l1 +e 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 now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens to k4 8vbgzfw1nw0u;ey7xp .+ tj the magnitude of the force on the proton if agnzy;u 0bf8v4w1 wpe tx+ kj7. second electron is placed next to the first electron?

  An electron and a proton are sepd6 l)rjbg0 fp-arated 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 next 0 -6)gdlbpfj rto the proton?

  An electron and a proton are separated by a distance of 1.0 m.d 0j(/z 9b)mbl oeonl0 What happens to l0job e0b 9om)dln/(z the 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 kvs4+:2 iuq8 vxm0xz ptz t8*pof 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 -Q are placed at the other three corners of the square. What is the magnitude of the net electrostatic force acting onxm2s *8:+zk4q vut0vti zpp8x the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid ofif u(x-y(w6m r 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 actsry6-f x(i w(um 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 vector0ra x4:ad,sxx?

  At twice the distance from a point charge, e dp/zk/9 o2txthe strength of the electric field

  Is it possible to havejnsagtd:x,o -s- )3r* b rj3uq a zero electric field value between a negative and positive charge along thrdjorb* - :t3squax j)3-n ,sge line joining the two charges?

  Is it possible to have a zero electric field value between two positive char11e 4x wbcd)hw0c gp1qges along the line joining the two cha10ebw1dqpwh x4 c 1)gcrges?

  Electric field lines nearn4slu 2yzt3.0bhhh0n z, g2ha psitive point charges

  The electric field shown ; w-q;dlymk ih17)6w 2 x,uvewb8mgav

  Can electric field lines intersect ivlm97g. kk0oa n free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniforbosa2 0k,pnobw9 ai-j 68bm4 mm electric field. Givp- mb,96bb8 0 asaijo n2o4wmke a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow me ojzexc;xgm2 tz3p 1s1+f e*dwk,)e 2xtal sphere of equal diameters are each given the same cho)px2fmt e3+1jwx ,kd2x szee gz*;c1arge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a z1fh 2uje4fnm b p5 ;)d7qsyz,region where a uniform electric field is directed straight upward. What can be said conce ;7yzj5,dzf 1p) ufbseqh24n mrning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electr83ev ystwq) n/ic charge

  A positive point charge is enclosed in a hol6kh sd5,a1tba e1l fxrv+wpa 044(zwslow metallic sphere that is grounded. As compared to the case without the hollow sphere, the ex,0wd16a (hv ak1 tes pl4arwsb+zf45lectric field at a point directly above the hollow sphere has

State three properties of conductors in static equilib1yw/- *fd4clq2a,edxaerg : nkefh38rium.

State Gauss's law.

  The charge carried by one x5m5rcr -rf02nrxwwx0c d,z7 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 net charge of +2.00 mC.in59;; jvsc oap3gyh6 How many more protons than electrons does this piece of p6h3 5sp9;aoij; ynvcglastic have?

  What is the charge on 1 kg of protons s +g6xdg33aw37hure-di yn5g8)n fn) fv)lsc?

  An atomic nucleus has a charge of eq2e4m6o.,kv9ot ywz-e zdf- $+40e$. 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 2.0 and q(o*rpd9 *da)hg4 35bydl e)a k3zaga-4.0 mC, respectively.z* 3dlyer ) bq3*o)kg5a9 ( ad4dgphaa What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge,nke0qc:w( .h tay ma6/ and the force between them is 1.0 N. What is the magnitea kw /y0tnmq 6c:.(ahude of the second charge?

  Two 1.0-C charges have a force between therkkjw 9j rvs:1.ql) aq7u(ff9m of 1.0 N. How far apart are they?

  The force between a 9kjsq ((0ibi g8 pqah1b:6bla$30 \; mC$ 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 fo8;s s(l9wb fzorce. If they are moved to 9 fzso8(lswb ;a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mCzv ;grd6b e5 ,0 hw9+nrz5zkxesfgs6, 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 10g sx0,b 5dzv f6n5kegrhze9 wsrz,;6+ 0 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. Admt-2j4ueryi. 9q*5b lel. zpsk5g m 6 charge of +2.0 mC is placed at the origin, -2.0 m C to the right ymt kgrs2z*ib.d9l4e p j56eu-qml .5 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 charge at the origin?

  Three point charges are located ag;03,r qxkqfcei 31o;symd 1d t the following 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 the magnitude of the ; s1xcqm ;goqe10fyi,rd33kdforce on the 3.00-mC charge?

  A point charge of +Q is placed at the center oo.ql4gd+vg 13 zrt voznw:g :*f 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 at:: 3roo.+ znwzd4lggqg1 vv*cts 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 n /h u:xt3nj+z8p3ltd(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnit n3dzlx+/ h3:tpt8jnu ude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC n0b+avi* wy /3yinhm 3is at (0, 0.10 m); Q3 = 5.0 nC is at ai/bywh3+vnn 3i0* ym(0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are plj5xufj76.w ccu n:eo+maf0x.aced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic:.f56cj.cmx0una wf o 7eu+jx force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whin*//+kmfbxt,bwg ; 1:jbpn:bybc+x x ch 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 electrostatic force acting on it would be/wkxm:*n, 1j+ b b;xb/ bcf ybntpg:+x zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at g/.uudpt ims70 bpr *+z1 pzo/x = 4.0 m. Where on the x-axis can a third charge be plrp1p7b.ogdz ms ut //+uiz*0paced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is pla m-:;lb1xltsy .x - azpf7t*gxced at x = 2a. Where can a third positive charge +q by;:ma- *7xflzxtg.t1s p lx- be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total ofb4h jtusn.q1.ax 2a,j. ctb3w $4.0 \times 10^{12} \; electrons$ 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 graviulu i;b l)4(djxcqiy4swyk6 rg;:3 d7 ty by the attraction of a fixed proton some dd ug7rw)( cil4iq;s4y3du; j: xlb6kyistance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads w 7*1m/f.qxnt7umc t udhich are 30 cm long. Both are given ide1*tcd7xu7mqn mtuf/.ntical 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 ele4dx6(el(hx mapytkl cf(:wdmm 5 ))de/bq 1h2ctric field at a distance of 1.0 m from the nucl qya2d4(hlpd):/xk e(5m l)wt61b hm cxdemf(eus?

  What are the magnitude a (3,ioy:elj; 0 /w rp+euiucjwnd direction of the electric field at a distance of 1.50 m from a uj;prwiwe/0, j (+l:e3yoiuc 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test cha rz5 yz,4a/rlcr.y6.a vhf3tfrge. What is the magnitude of the electric field at the location of 3v .,r.fc zf rlrha/ya z5t46ythe test charge?

  A 5.0-C charge is 10 m from a small test charge. What ih.rw5/ge2pmpa/ 6l pcs the direction of the elecppl5ger/ p/w h. ma26ctric field?

  A 5.0-C charge is 10 m from alr2m6e(3u:kki.e r7 f3m amf)+do4oynxyv z9 small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location3v93fe uo74 ) ma.+rirykok(em6nldxf: 2 myz of the test charge?

  Two point charges each have a value of 3.0 C and are separated2wvt i/)y xy/ esw5t9q by a distance of 4.0 m. What svy/tiwt) 2yxw9 / 5eqis 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 a -4.0 f bq3t)-nx8(ea-s tqcmy2b/ u mC charge is placed auq/am( xn)qfbt-s-bet3 8 c2y t 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 met,eym( l aie*tvxi5i0 *er stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line jiivy xe l5a(e**i ,t0moining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 an6wuj )wtwc*f. d x = 0.20 m. What is the magnitude of the electric field at the point midwauwww.t )j f*6cy between them?

  Three 3.0 mC charges are at tt/9ru,gr 6m wkdz;ucyk) (h9 6yma3;h6ftkpd he three corners of a square of side 0.50 m. The last corr pta6dd9mk;yk,/h3c6;w)hf u kygzt( u9m 6 rner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0hwo /u+na(;hxj* :engd/b h ;p m on a side. Charges are placed at the corners of the square as follows: +4.0 mC hd :x n(bn/ ph /gahjou;+;*ewat (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 c3;qnydnsvog:b* u-+ 5.0 mC when it is placed in a uniform electric field. What isvy-guc bq;+sd:n o* 3n the magnitude of this electric field?

  A particle with a charge o3j;:l 6cm3wo z ib8 6tooeq/rsf 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 4t o2)mhkqt sx ltx/pkqi jl6 74p 2c0a+/drw:an electric field of 6000 N/C pointing downward. 2 2/ dcta7i )phlt/0+ 4kslpx :xqj6owqmkt4r What charge must 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 is -z8) 5;pc8kbu ywjrocplaced inside a uniform electric field, and is suspended against the force oruj;cow-b c8 85y p)zkf gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2 ogje70ub mdoc) a6f5..0 mC. What is the magnitude of the electric field 5.0 cm from the s.ue c567)g ambjfo0dophere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 .gj k6l(05u7lxakz fcoy,htu 4.*kj z mC. What is the electric field 6.0 cm zg7ujkfyk0 a4jut. c. l5 l(xzh6o*k,from the center of the sphere?