State the law of conservation of5ncgo76 ok85g-yqdfy -q1 pu z electric charge.

  Is it possible for two negative charges to atf),rrkll s:0k +j d;bqtract each other?

  Is it possible for a positive and a negative charge t0uess9cnef e -z*0 *txo attract each other?

  A glass rod is rubbed with a piece of silk. During the pro(2 p xcbjq/:p(c3y gdccess the glass rod ac d2cpy/:bc( p( xqg3jcquires a positive charge and the silk

  A proton carries a

  The model of the atom showsgy2k fs0x5i:.epch- c a

  A neutral atom always 8orm9whl 2l/s has

  An atom has more electrons than pro7xe0)hi 4znvf(c. ez7bck :fj tons. The atom is

  Materials in which the electrons are bound rm +-:oazz0xw very tightly to the nuclei are referred to x0 zw:+o- azmras

  Materials in which the electrons are bound very looselmy.d,+u pn i3gnp )9tvy to the nuclei and can move about freely within the material are refdg3y+,m tvpi n p9)n.uerred to as

  A negatively charged rod is. k7lzld,n d :tw:ak)z brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged lk 7a.t d )kwnl:z,z:drod will be charged

  Sphere A carries a net positive charge, and sphere B isqxfd./qfn5+fbf1j+m v,j71qt w3 pv d neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is co,1f5qfjm.1 / d3d+ j vn+vwbqxf7qtpfrrect?

  How can a negatively +cma 5+2 axrr+ maeag(vc wcew6-2+gr charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly toucheufkj,k0hk )/w d with a positively charged glass rod.k 0hk/ k,)jfwu The electroscope

  An originally neutral electroscope is grounded briefly while a positively chan i42s*oknaa. 4*ic smrged glass rod is held near it. After the glass rod is removkism a 4in2n4* as.c*oed, the electroscope

  A positive object touches a neutral electroscope,kn-;0m3z v y5cazrf c1s m8o7i and the leaves separate. Then a negative object is brought near the e zn5m08frsm 1yzcck o;3va-i 7lectroscope, but does not touch it. What happens to the leaves?

  A large negatively charget;cmvs2 c 1xzkd(2/f a:m g1ted 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 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 fi t:va1sz2m 2;/xdefgctc1k(mnal charge on each ball?

  Charge is

  What are the units of the Coulomb constanh/ lp0vho.p;17jr hwyy5vuc( t $k$, which appears in Coulomb's law?

  Two charged objects arrj;*c+f rmfzt4*y ro -+a88rp;rsfk ze separated by a distance d. The first charge is larger in magnitude than the second charge. z8;f ps - a*84r; +fcmtrkzfrj+y*rro

  Sphere A carries a net charge and sphere B is neutral. They are placed neawc i*(4pep u6yr each oeyuppci6*(w 4 ther on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force.clsbeo;u5 v:sqwo 835 If the charges on both objects are doubled with no change in separatsqo8 :uc sow5lb35 v;eion, the force between them

  Two charges are sepa 9zxifq7c;o/6ci(t8 p,guw y lrated by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3cuc/q,9l(g8wxpi iy6o ;f z7t, what are the new mutual forces?

  Two charged objects attract each other with a force F. *p+8 a*g 5 1by;/urhqjc, cstnb++kfzbpl ou4What happens to the force between them if one charge is doubled, the other charge is tripled, and the separop f5b8nuby *+q1jhtr+s,+bu c;/ pca 4kl*zgation 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 1.0qq)8te*h rb ciu5ufgg,9)e5n m. What happens to the magnitude of the force on the proton if a sq5r8n) uc,)5 g9eiugb*feq thecond electron is placed next to the first electron?

  An electron and a proton are separated by a distance of *aqxhd, .:pld1.0 m. What happens to the magnitude o:p.x q,lda* hdf the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are3.)t+0inz djus sd 6uivd,l, fyyt/1e separated by a distance 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 p,fjuyddni) t. 1s /z+t s0eiyu6d ,3lvroton?

  A point charge of +Q is placed at the center of a square. When a second poin3msvuli z(fu.rz16e 4 t 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( zfivu6 mr sz14l3e.u center of the square?

  A point charge of +Q is placed at the centroid of an e3;guh;s2u 8y0y rhakyfztb. 2quilateral triangle. When a second charge of +Q is placed at one of thby;u8hg u fs 0t2rk2ayy.;z3he 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 vec )4wx*zay-udc-1ablq 5xjai 6-9hrs ttor?

  At twice the distance from a point charge, the strength of th*u6hb wex(0s ye electric field

  Is it possible to have s ;dzo3)v f(raf v+s+m bf/8uua zero electric field value between a negative and positive charge along the line joining the two (dv+au+s 3 b8mz rf;ff ovus/)charges?

  Is it possible to have a zero elet eu/f/ i5aoa:ctric field value between two positive charges along the line joini/foe5/t ua:aing the two charges?

  Electric field lines near psitive point c rm3h5mll1bo 1uw,l b:harges

  The electric field shownzy */2ttb xm28d fnanl83l3qc

  Can electric field lines intet7ig 2y-so f.q1 fq8xyrsect in free space?

  A solid block of metal in electryir th)xo) b2ha+8- tbostatic equilibrium is placed in a uniform electric field. Give a statement concerh+ t obrh )8bax2y)-itning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal spheretzxglq tcfqn(22x +2: of equal diameters are each given the same charge, the eqlz2 2xt(t+n:x q2 gfclectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a reny*isz6.g0pc u7zxi ;gion where a uniform electric field is directed straight upward. What can be said concerningz6nzi0u7 *. xi;y cpsg the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium ne*yr(f. z pk4swar an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is group* h 4kjfuwusoz0*p24 mji:3we 0l;aunded. As compared to the case without the hollow sphere4us 2jpe 0jwh*zfao4kp:30* umi; lwu, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static ek 4tvcuw yr+:j x6e:/4nf qqw.quilibrium.

State Gauss's law.

  The charge carried by onedh6 m4 )zfa s nhj7p9u(lec0lc2yh46g 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. How many mo /-q nddda hpz30g 88.;(gnsqhdnh-ware protons than electrons does this piece wgznq8d- p -shh adag .( 3nq0/n8ddh;of plastic have?

  What is the charge on 1 kg t0lh1/rc9;nvpk xwx, of protons?

  An atomic nucleus has a d pocyp/j7-;c charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separd r,ii8 6r/tjkated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is dkj6 it8ri ,/rthe magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a seconlg+lv9 )pid27xixw1a h 3i /7xr(lnlrd charge, and the force between them is 1.0 N. What is the magnitude of gxildi) +1wl ilnvprxl97rx7/h23a (the second charge?

  Two 1.0-C charges had391bd/wr pfio wx/i-ve a force between them of 1.0 N. How far apart are they?

  The force between a ajlwf c-vyh .z81cl . )n5e5w6;w scbf$30 \; mC$ 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. iqv+f2a/fh;wf;h;w adc 6+2kw sy .gb ;k1wss If they are moved to a new separation of 8.0 cm, what is the electric for/s62w1fsh;h a; +cbwkysdqa;. wv ;g2fkwif+ ce between them?

  Three identical point charg+q qfi*hxfeu .od)opqg1+ a2,es of 2.0 mC are placed on the x-axis. The first chaxpqh1ofi qa,+f.eou )gd+2* qrge 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 the origin?

  Three point charges are placedk -tj 59crh.r9ty q9id on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at xqi9ht.c95 t- yjrr 9dk = 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 areans+3w,rt)l h located at 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. Whh3w,r )t na+slat is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point cu*q d nc-thz-7 4g6plcharge 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 o cl- 7z4-d* cpqthu6gnf -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0wi9q wsg:mqv*: w73i 5y.wgfr , 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the5g*is fqr7:3vwwyw:9. wimg q 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 =o ,3h r*vheql3 5.0 nC is at (0, 0). What is the direction of the ne,o 3v3e rhqlh*t force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at 5piu, hny9g08 yex8jmthe vertices of an equilateral triangle x pmg95iuhy8 e,yj0n 8which measures 30 cm on 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, whp6e:g,krb / kl-(j tnnich are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a chan6 e/ g,kbtlnpr(:-kj rge of -Q 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 charge is at x = 4.0 m. Where ol1r1o7aeet* exoa x *ua1h(e 1t2r*man the x-axis can a third charge be placed soxmat2lau(71oa 1* ehoet* aeerr* x11 the net force on it is zero?

  Charge +2q is placed at the origin and charge -q u7cnf ;w8 2ci frzh)du0 *k2riis placed at x = 2a. Where can a third positii2wh8 ifu* k0dnr7 u2cz);fcrve charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total owie .u5)i - mk*rh9rkaf $4.0 \times 10^{12} \; electrons$ 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 o4d*tq(ypy9p(t m2t* w6jl dm attraction of a fixed proton some d (ytjqtl2* mddyo(9pt4pm6*w istance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung *tcm/yxylz v),v3et u3o 3x6gfrom a common point by nonconducting threads which are vtyzyvo x/x gt*l63,e3mc )3 u30 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 gef/ p,dhl0lfgkzi/k88l 04b of the electric field at a di 08glhfkgz 0dl/8 , pefi/l4kbstance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field krh4l 85luc, aat a distance of 1.50 m from a 5a kc lr4,lu5h80.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofc3tjf8n6;mo9.h85erfe,ej6a v ydc h the electric field at then 8ft5oj y6h9m6v3c8dh ef.ea;,jer c location of the test charge?

  A 5.0-C charge is 10 m gnzf)4t40k v nfrom a small test charge. What is the direction of the electzn0g4vfn4k) t ric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the f l4b* l lcb99wg 8eakpecs/9.rorce experi.abwbe gp*9l94lek9 r8 s/lccenced 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 anf r.u2j3goql6d are separated by a distance of 4.0 m. What is the elgl6jf 2o.3urq ectric field at a point midway between the two charges?

  A 5.0-mC charge is placedk gd,f;7u v2shf7uhb 9 at the 0 cm mark of a meter stick and a -4.0 mC charge is placedh7ff,g skd u h97;buv2 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 me7i-e2v g3a vqpn :i.ztter stick and a -4.0 mC charge is placedn:vzp t.3i g7qvae i-2 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 -7.05b+2g28sc g:xqa5b ugwv c(wv mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway 2gv+5:bgaqw 5vc(sgbu 8 2cxwbetween them?

  Three 3.0 mC charges are at the three corners of a squ:)d :fidq7x)t m eo7zware of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electricifmoqdde) 7 : 7):wxzt field at the center of the square.

  Consider a square which spblbr9ql e8)vh u emz4w7x3t ox9,11is 1.0 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 alo1x,p4rum)t v1qe b7w b3zx9s el89ht the square's center?

  A force of 10 N acts on a charge of 5.0 mC,j uuq0wdf. c. when it is placed in a uniform electric field. What is the magnitude of this electrjwc.q,f0.uud ic field?

  A particle with a charge of 4.0 mC has a mass ox/xitp q ,.9c7pws jv we()nk6f $5.0 \times 10^{-3} \; kg$. 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 )j-c v/r5u5bfi g9k odj3f;d p6000 N/C pointing d jfj -od59gf5ubr/kcdpi )3; vownward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g 9c 6 zozf(8.y a-bvm9 gx;k:myir+pjlcarries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. 6jvofy(: ;-ma+pz.y g 9zcx8rkb9mli What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC;.7xm l ;(i y u*tmbt5mrjryh5. What is the magnitude o m; i5h5brmm.uyt7tl j(y;xr*f the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. mnt;c 0d9kuicrmo)69 What is the electric field 6.0 cm from the center of the sph9 )drn;um6cimok90 ct ere?