State the law of conserv2dc7xjw o6tcl c3w ,.y *omrecy *cn.4ation of electric charge.

  Is it possible for two negative charges to attract 8vdq n;aqitgq)8--.v- qovr weach other?

  Is it possible for a positijaom(cif9s2 ,19yy ,ov b+:bbxq pp* lve and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod acl4n*ug f/e )rtu v -e:n;i6vgaqui:la) /ftn*v vg;e eu6gr ui-n4res a positive charge and the silk

  A proton carries a

  The model of the atom shows asd88v/ xv*x jp

  A neutral atom always ro5 mi05nbty;7lassz+z k1s3has

  An atom has more electrons than pr kvzj21q/ys5u wdb i51otons. The atom is

  Materials in which t8i cshkt(y. w2he electrons are bound very tightly to the nuclei are referri chs8 .(t2wyked to as

  Materials in which the electrons are bou8o;s+o 2gdllh kbc00 tnd very loosely to the nuclei and can move about freely within the maol;t2+0 dckl0gbos8 hterial are referred to as

  A negatively charged rod is brought near one end of an uncharged4+hc,y/n wk: rwv6z23kvfk ud metal bar. The evn v kw3/6k,2hkyc+wrf 4z:du nd of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pla4b + 4-rstrkudced near each other on an insulated table. Sphere B is briefly touched with a wikr +44rb-dt usre that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrosw:u1xt (fks, xcope positively?

  An originally neutral electroscope is briefly touched with a positivo0)e 2okxnz9j(l z3shx (z/ pzely charged glass rod. Th3(h lozj )(zoxsez9k2z0p /xne electroscope

  An originally neutral electroscope is grounded briefly while a/d.q)l-.izvs y( 95vpul u ncm positively charged glass rod is held near it. After the gl/svv ynlz lpc5q-(u9.udm) i .ass rod is removed, the electroscope

  A positive object touches a neutral electroscope,-ycm hgz ( r4inppydk ;w0. ucu(ea6;0 and the leaves separate. Then a negative object is brought near the electroscope, but does not .u(p uh;4 z0wmc-ey0 cp;d(nya6gikrtouch it. What happens to the leaves?

  A large negatively charged object is placed on an i40j yvqv4h2 ap p.hb0unsulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ba q. 0vjpy 042ua4vbphhll 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 of the Coulomb consrx:gjoymv0 7n.i12 zg tant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Theezml3n4-ka 2 d first charge is larger in magnitude than the second chardel2 34 zmna-kge.

  Sphere A carries a net charge and sphere B is neutral. They are placed vh/kyot* wdyhf)r642pgd- 6 bnear each other on an insulated table.b fk6wth-gp v4d2)6rhy / o*yd Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain f;5(.o,zagk r lwz 5lgiw,)p(xrxt l6rorce. If the charges on both objects are;.z lww5a xkri((g5gtlrl,xp ,r)z o6 doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractwytwrc2:l/;wi.en d o5 6c;hg ive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutug6i;tdy 5 2woercc.ln ;:/ hwwal forces?

  Two charged objects attract each other with a force F. What hnw)( s wm2js-+cu ia6eappens to the force between them if one charge is doubled, the other charge ws a6wju-e)2nm +i(cs 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 proto)gmzcx9uns ;zlpm7p,*: mlb:n are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second elnc7 lxb; zpm9msm,::)gz *uplectron is placed next to the first electron?

  An electron and a proton3vcc yc83rphjf/7nv/ yd y: sz d j51d5wb3o*b are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron/j33*58zfd wdcvn :bcj o/y v d37hr5cpb1syy 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 happens 5hx 6v55pskmeto thmx5 e5vh s5p6ke 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 thef2kt m 1fr,1i omf4x0z 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 2.0 N acts on the positive charge at the squ kfo x4fmzrf1tm102,iare'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 titdh.(zw02t( *-g hi jvu,utjjri1 g;he centroid of an equilateral triangle. When a second charge of +Q is .i(g hj jg rwtttiuu zv2d;h0j,i1(-*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 nothbqov: 6t-ooky 5o;7q a vector?

  At twice the distance fro6.u1muf2dlpeo h y+1)t3hyb 9x oyc/lm a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative andodg;p /nw/(v0 m i0iqt positive charge al/ ;g (/ n0iitpmw0qodvong the line joining the two charges?

  Is it possible to have a zero electric field vaq.d dq/n7syg 5lue between two positive charges along the line jqg 5./sqny7dd oining the two charges?

  Electric field lines near psitr -v/3u6j(gqis c+oh sive point charges

  The electric field shy ;thg)d ,ud7 ep.vzw8 q);jpoown

  Can electric field lines intersect in f0kxar b/6i1(jig13zdp ux xk0ree space?

  A solid block of metal in electrostatic equilibrium is placevd ;*:lc,hpt jd in a uniform electric field. Give a statement conce lcpt, :;jvdh*rning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of eq8.2xvj(yxkgxyn* ta,lq-c; c iuv/ ; iual diameters are each given the same charge, the electr28i.va lg y*;cucx xk( i,qn-txj;yv/ic field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooda5 t)omjb/ *yy /ubx9nen table in a region where a uniform el)/a5o/nxu b9ytj ym* bectric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in ele*.lj) r(e ewlfctrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that1lm+skqy .xb/ufxq 3. x 9o1 lqs,mr-gb v9ld- is grounded. As compared to the case without the hollow sphere, the e3qrs y/u,9q -..d1gblxfvx+q1k x9m- m lbos llectric field at a point directly above the hollow sphere has

State three properties of conductorzr/.: s gt9jes;f.p p5auq.hc s in static equilibrium.

State Gauss's law.

  The charge carried by one electr kh5jna.,j a ax+;;kcoon 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 +2.0 abmqha/ 5.+ne0 mC. How many more protons than electrons da+hq .a/5enm boes this piece of plastic have?

  What is the charge on 1 k*i,74 hxdyqf 9yi,pt eg of protons?

  An atomic nucleus has a charge ofq8 knc6g :ab;oky amh,*9sjy( $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, havoa5e*) mjsg u: b4z3fje charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the4js* bf:u oz5a m)j3ge electric force between them?

  A 1.0-C charge is 15 m /bvjj kla(m 4(hv /uv4from a second charge, and the force between them is 1.0 N. What is the magnitude ofa4bhm4 vljv(/kv/ (ju the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. y0*wj-wcvx l0 5 ok/xaHow far apart are they?

  The force between a y8ti) j. r3mmmz6rc: o$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initial.ebotj) 5qjj 8ly 2.0 cm apart, experience a 1.0-N force. If they are movet.jj85qbe j) od to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of9:snjq7lr6 fl 2.0 mC 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 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the: qs 9jr7fln6l origin?

  Three point charges are placed on the x-axis. A chargkabzx ,+ktjtke,,- .ve 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 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the chjtzx, +k,a ,k.ktbve -arge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x m eh .u+3aa 9i(pqt0fd= 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 force oq td a0u(.+3hpa9fiemn the 3.00-mC charge?

  A point charge of +Q is placed ojsz8:v c*lwh wp (c+9at the 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 on the center charge if a third charge of -Q is placed at the lower-left l:c*s8o wwhczv+j9(pcorner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10kl4 (sq-l6few m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nf(-l46 wl eksqC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0q+ r- ,7p qh2fs+nbq; m4sgymi, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 mgirsfs+nb ;+4mq h-qq,2 7pynC charge?

  Three identical charges of 3oi3 v2iz aye1 3d2z rdp*g(.jix1b vr..0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostat.z(a id*xg3ivrbj2o3z1e r2v 1yp. di ic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sxk k alc8mc(3+eparated 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 zero8x+ (km3lkcc a?

  A +3.0-C charge is aav5zwyh 6*q2tu3lh: k t the origin and a +9.0-C charge is at x = 4.0 m. Where on thek25* th3 6 azvlwuyhq: x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chargenl3jsq 88 . 7lvpm15qbip6m yb -q is placed at x = 2a. Where can a third positive charge +q be placey5 l8vjib. mpm83p1lq7qnsb6 d so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total oh1ki:ht9v i3q xs d;u9f $4.0 \times 10^{12} \; electrons$ 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 gra 4- fy,iygw,fik5o am9vity by the attraction of a fixed proton some distanmyy ,4- kig 95aw,fifoce above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thre,heh gieu(-:pads which are 30 cm long. Both are given i,u g eh(i-e:phdentical 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 elbj358rj fs 1ovectric field at a distance of 1.0 m from the nuclejs3rf boj8v5 1us?

  What are the magnitude and direcfn7+5rs) fr (ec:h anrn)9jiwtion of the electric field at a distance of 1.50 m from a 50.0-nC chargi+rf5r: ewfnr) (scn) j an79he?

  A 5.0-C charge is 10 m from a small test charge. What is the magnituap-di5n zq6l3xm6;qrw/+x c fde of the electric field at the location of the rwl;-mfqxdx6ci 6npqa+3 /5ztest charge?

  A 5.0-C charge is 10 m on;k1ujxyc-)bksz.- kssz/5 from a small test charge. What is the direction of the electric .-1bx5 sk;k)yjczsun /k osz-field?

  A 5.0-C charge is 10 m from a small test 8spt: zmr d i4sxbb53q)vxc-a 78f5techarge. What is the magnitude of the force experienced i:mqf8c x35-4vbt )a x8tsbepd5s7zr by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a v)u-fji0m zz4 value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midwvmf)-4uz0 zi jay between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -t2 b4bw2vf2va3 lh.2zalpb8d 4.0 mC charge is placed at the 50 cm mark. What is the electric field at abw8vh2bpa. lvfd t22b34 zl2 the 30 cm mark?

  A 5.0-mC charge is placed at th dotq:*djd4e(a -nuwu fq7b1 8e 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cmdn (ddeq*o wf-uu:b47tqa8j 1 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 3r ))xo w:8catgf 9ve n+wc*ui6dzb-j m. What is the magnitude of the electric field at the point mid36 ozvteidrw +c )x*abwujnf8 :c) 9g-way between them?

  Three 3.0 mC charges are at the three corners of a square of side )d(,4z uvb y eikoft(icip*2k 6tf8c20.50 m. The last corner is occupied by a -3.0 mC charge. Find the electricz it)vfokk( , *6icbi822f(e4y dputc field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are f6l04ve0(p(z(w i/mrc-qrvovd vq6 u+ atl e5 placed at the corners of the square as fqio z-(v5 (vcqw arv0 fter60d+(e/46ulvlmp ollows: +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 the square's center?

  A force of 10 N acts on a cxwxt rv.qqe1r :t z5(,o8v3 krharge of 5.0 mC when it is placed in a uniform electric field. Whrzvtv(rr1 tx3,:e8 x 5.qkqowat is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass :/2opsh8s41okq ;v8 uvdtoh wof $5.0 \times 10^{-3} \; kg$. 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 ofxgywv2 5my4z , 6000 N/C pointing downward. What charge must be placed on the ball for it to b ,m wyv4zyx25ge suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The bpon (tb,nc9;6gx1oo mall is placed inside a,t(b;noc g1 o6xnpm o9 uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm caciihm5y bg*hm2,8/+ l *hyshtrries a charge of +2.0 mC. What is the magnitude 2 imlb h/mh+,*tgh5ih8y ycs *of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a cha2 pzmyms),dh vi (a v2w:zlmk*i7k*r 0rge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphere? 0ahivzlw*p,mymz dm )7s:* vri2k(k2