State the law of conserva ms/v5m 8jr i+lx7vk3etion of electric charge.

  Is it possible for two negative charges to atthzoc6 8s l7iq0 ejp5n9ract each other?

  Is it possible for a positive and a negative charge to ah saiga5 pf;2d 0oc-3yd a- obys(t)a2ttract each other?

  A glass rod is rubbed with a piece of silk. During the proce)kj506kfrxt;0eo sbtrqir 96 ss the glass rod acqukxkqb6rr )f 605 jeis90t rot;ires a positive charge and the silk

  A proton carries a

  The model of the atom showiq5 ug6*bdt .ws a

  A neutral atom always haq1-d 1 l0ono1h eq xir6oxx6g)s

  An atom has more electrons7) k3dfm0m5kqp 1snu o than protons. The atom is

  Materials in which the electrons are bound very tightly to th9 fhipl+9n :k+)k7g0wj f(qnu0aso yue nuclei are referredoil7k+uf9q:+ k n9uwpshg 0nja0(y)f to as

  Materials in which the electrons are bound very loosely to the nuclei and canfyng7in lp: y:o, gd, 0pi(u/c move about freely within the material are refer ,upygip,ny /:gid(0:oc nf l7red to as

  A negatively charged rod is brought near one end ofxun3y5:d * pe(;4am7z yoefi 2j msi1e an uncharged metal bar. The end of the metal bar farthest from the charged rod will be cho y1;z 3 :xii* fyseund4 amemp5j7(e2arged

  Sphere A carries a net positive charge, and sphere B is djld spv dhy d,-t vwgv,54+o+gc 9 6u1owgd8+neutral. They are placed near each other on an insulated table. Sphere B is brido8o- 5p ju1 svvw6+vdl, w+hdc9ydg+ 4dt gg,efly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posv4au o:+tbeyg l/ .xr.itively?

  An originally neutral e:i ggf4 rxchu888 ofk+lectroscope is briefly touched with a positively charged glass rod. Theckgu+88f:fr 4g h x8io electroscope

  An originally neutral elc5wd1vp1vnugf37e6 mml 9mdp5 sly +/ectroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is 7lw6vfmm upnd 1p53v51/sg ly cemd9+removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Thympp /hd5cmg nk( c*f+ r2q91ren a negative object is brought near the electroscope, but does not touch it. What happens to the leavec/cr 2ypmm dh9*+ 1 p5gnrqk(fs?

  A large negatively charged object is plaed o0 w pex01zopc3vca6)r) f2ced on an insulated table. A neutral metallic ball rolls straight toward the object, but storx 1c)wodpe )eo af062c03zpvps 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 charge on each ball?

  Charge is

  What are the units of the Coul*88 as3 nxr4m ;i-n-g sdbz3mm*tfjgiomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance n wtr+gn5ptyw7c,*c45r ar( yj)qdl 3d. The first charge is larger in magny 5,gw *3t 7j5r4candylt)rwp r(+qnc itude than the second charge.

  Sphere A carries a net charge and sin9e3j+1i c/ ichzile1j*1q4 n.a l;5yczfu gphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force i+ helc *i1ygcinqa/z.1nl1eu9;c3j5fi4jz between them?

  Two charged objects attract each other with a*xfj+w.m7ze m.,tpo (jyzy4g certain force. If the charges on both objects are doubled with no change in separati*tf e.mg+(4oyyjpw7 zj .mz x,on, the force between them

  Two charges are separated by a distancm/wumc89/ snv4d cud+9ut)pfe d and exert mutual attractive forces of F on each other. If the charges ar8t)svd u +//4nwudc99fmpm uc e separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the 3f pusgi iu 7l4eu6 l;w)5z+vjforce between them if one charge is doubled, usz l fulj ;7+iu3w6i)vge 45pthe 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. Wh : qx)sfzv *i.-xp s3j8ly+lrfat happens to the magnitude of the force on the proton if a sesy3vl.8lfxj*qx+-p sz r:i f)cond electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0(/d2 ki t.hl/4gdxa vv m. What happens to the magnitude of the force on t .d4vika d/vt2hgx(l /he first electron if a second electron is placed next to the proton?

  An electron and a proton are h6/ee/z 6578d zcbmn r,wj5xvpqa nr-separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.5ncb vqz/ ,/n7zpre68hxw6 rad 55j-em0 m closer to the proton?

  A point charge of +Q is placed at the center of a squareev0m6 ku iz51d. 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 on the positive charge at the eimd1kvu 0z56center of the square?

  A point charge of +Q is placed at the cenixhdz ;vjd zcj m-a9r/r7;-eye q9-0gtroid 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 the cegmq7z 0 -z;d-j earh9v 9dc i;x-jr/yenter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vect nqttypbce- 0 c.y 3s8qv9+ 5wugb4x1for?

  At twice the distance from a 4cpt8+hf lu9s:kp i7xpoint charge, the strength of the electric field

  Is it possible to have a zero electruq+-pg29wnt ce,s3bk ic field value between a negative and positive charge along the line joining the tc-b 2,gq 3tu9knes+w pwo charges?

  Is it possible to have a zero electric field value between two positnzgc+(kogtg /1 *d ,jjive charges along the j1/ogjcz,tkg (d n+*gline joining the two charges?

  Electric field lines near psitive point chargesp yljj+1o:p 6b

  The electric field showc1 .+ c ,h)tdfc)pruqpn

  Can electric field lines intersect in free se tes ie(4i6 s uneqfeo6e-694pace?

  A solid block of metal in electrostatic equ+adn+rpwyshv /nk -k1e 9:,n91ij eojilibrium is placed in a uniform electric field. G-nrjiypeedhvw ka,99k1n :s1 j /++noive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are ejmh m3n,yxug4 irz7 ;6sth:f*ach given the same charge, the electric field (E) iumsh;3zjfh 74gt 6y, n:m*xr midway between the center and the surface is

  A cubic block of aluminum resxuwiv/.+d 3 ;el tp1ju7znka 1ts on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block'3p daxinu; 7w.ktlj/1+ 1 zuevs top surface?

  If a conductor is in electrossomjpog4* *z/ /9bufjm.drm e:j)x 9gtatic equilibrium near an electric charge

  A positive point chargew b;vam +c:1* 1o/s+k mfc-ts:kuvmox is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electricavs+msmwbu ctxo1mcf- :o ;k*1/+:k v field at a point directly above the hollow sphere has

State three properties osee4- g/qahvc.s7:jhqudyo74.ls 3d os. +t mf conductors in static equilibrium.

State Gauss's law.

  The charge carried byfjmog ihn3 b/i x3;t2: one 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 moybzg u1aj*v;;. sro5dre protons than electrons does this pie s5gbad;ujo. vzyr ;1*ce of plastic have?

  What is the charge on 1 kg of protbnd8i 1.h:n sjup ,vbt(7q8dxons?

  An atomic nucleus has a charg62 8uey*hy kxne 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 char8 hqfqm e9/ -g/aqkpk5ge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the 8/p mqaq k f/egh5k9q-electric force between them?

  A 1.0-C charge is 15 m from*z+lwa+jc4 7uwy+ xxguo8 ,h t a second charge, and the force between them is 1.0 N. What is the magnitude of the c ywz u*xaw 4+ljhx87gt+,o u+second charge?

  Two 1.0-C charges have a1 4: zzf,-rkvlgjaf;.vpz4kc force between them of 1.0 N. How far apart are they?

  The force between a x6b,1fm*eq s qmuo)z. $30 \; mC$ 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. Ifl6) eact(cvp: m,e+x f*o ta2td4x6je they are a j*+dtfmx a,le 6t6(oeexc pc24: tv)moved 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 fi7 k 8 kcmjml7v/ bv3669szqlfbrst 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 chars 98 bvbc6ljmf 6kl7zk37v/mqge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0fa*w*l z6 wvt3 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 charge at the origin*lv * wfwz6a3t?

  Three point charges are located at tlbfpu(+s.gt fud (d)f.sn6wxd 2vs8 9he 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 magnit+ d..( g9tnb (vdfdu6fspl8su2 swfx)ude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the centeq*hqhs ;/5hjd5hy m ob uaw+22r 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-l ;d oh*h/q+hyq5 a5 hbju2wsm2eft corner?

  Q1 = 6.0 nC is at (0.30 e/,k8x3g qtivs4 ot9d 1dkb:g m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC c ot 9dk348gd/ iet,1:sv bkqxgharge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 =nk3) ebk rb 39w(lnovnt7:m,oqh8g/e 5.0 nC is at (0, 0). What is the direction of the net force on thro33 enlv 9k/,(e :k h7o gb)bwnm8ntqe 5.0 nC charge?

  Three identical charges of 3.0 mC are placed d,c4em0pzn;2bq;f loz q u n)5at the vertices of an equilateral triangle which measures 30 cm on a sidp5lze2;f omzq04u nc) ;d,nbq e. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. ;e3 5cs ja3wr9c vjqrb(5cg2y At what point, on a line between the two charges, would it be possible to place a charge of -Q sa;v 5(ry q52jcgb9w 3rcscj3e uch that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at th hke7m g;xbww*cm+ 19k il(fb)e origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the netk;) wgh*cmb71l 9xe bk+ mwfi( force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x =naoizs1rl7*i-fj 1 dh+xmq5 kmv 7 +dz8it82 z 2a. Where can a third posir++jq mhx87*osz tn kiil1 v57md81dz-2fi aztive charge +q be placed so that the force on it is zero?

  A copper penny has a mass ofnjjb3 1f(o;d7hb w r-p 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 up against the force of gravity by the attraction of a fixui* 6;;g sjgnyed proton some d 6yn;;j *gigusistance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nog+ebr4 0xktzoq4u mn1k*. :pcnconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angl0c+r xq1m t*.k:o bgznpk4e4ue between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has izyl 7/*urs*18kvs hr a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the8*uhiks*lsyr z /r 17v nucleus?

  What are the magnitude and direction of thex +eei4e:ih9l electric field at a distance of 1.50 m from a 50.0-nC chargih+4ee:e 9i xle?

  A 5.0-C charge is 10 m friojk,..4kdw oom a small test charge. What is the magnitude of the electri ko okji4d,..wc field at the location of the test charge?

  A 5.0-C charge is 10 m from a small tbjqe(pa ;z +:sxx;-va 3 8iggqest charge. What is the direction of the electric field? gs3qq; bz:-g+(ijpxe;8aax v

  A 5.0-C charge is 10 m from a small test charge. ssu(dhuu9a1: -r zr 5c What is the magnitude of the force experienced by a 1.0 nC chahuarrs-u5u (ds9:1zc rge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separaten9 ,u/ s0fcwczd by a distance of 4.0 m. What is the electric field at a point midway between the two chargesnc09,w s/fuzc ?

  A 5.0-mC charge is place3gfn,.9y ga;zr,) ftm2umpov d at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 c2z3fgryapu 9movmn;tg .,f,)m 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 meter stick and a -4.0 mC) gedrvzq*6f rlfe+x 92 utp3fv:o7. z charge is placed at the 50 cm mark. At wh7)x+ 3po2f rv9lqz6vg* erzeu:td f.fat point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC a: n8yy2: *k6zqcrpt fdi(eic(re placed at x = 0 and x = 0.20 m. What is the magnitude of tekz( ::n (68pyi*fdyicr qc2 the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. T 5(y ;njgp5)vwtl esm5z uy.c;he last corner is occupied by a -3.0 mC charge. Find the electric field at the centecj(y;m5le y;u. w5g 5)p tzvsnr of the square.

  Consider a square whicq-se,cs t-2: / eqtmjlh is 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). esm-- tsj:lq2,/qect 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 im ct42 em e8,)mmwbh5mt czwl2mv5:5zs placed in a uniform electric field. Wh ,cm h8v)mtemcl55w4w2tezm 5b2 :mzmat is the magnitude of this electric field?

  A particle with a charge of 4.0 mC h2:x0k33xnf0un,hu :ha xe p acas 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 ibhd,, ys1la)dkm mn3r ..n*zh n an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be susm) dn *m ak ,nd3zl,s.1y.hhrbpended?

  A foam ball of mass 0.150 g carries kna bm *:alkebu 1c+95a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspen bc19+*n5 luak:kea bmded against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is a-zp r+zh 36ihb4)hvsthe magnitude of the electric field 5.0 cm from the s)s vih+ahz-p hr6zb34phere's surface?

  A metal sphere of radius 2.0 (g shwy 9dd 8x+d5,yuqcm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the y5xsh ,d g+dwy(u89 qdsphere?