State the law of conservation of electpp97) yej::ek; qesyvric charge.

  Is it possible for two negative charges to attract e;nugnoknd l1n 1kb2:y)g 2be(ach other?

  Is it possible for a positive and a negative charge to attract eny 5t-.vun(5 jz yak*dkz1,qyach other?

  A glass rod is rubbed with a piece of silk. During the process the glass ru:m8gsz53 :0- lpb b qmfq*upqod acquires a positive charg:bl*q :5bzpgp8q0 uqmufsm3 -e and the silk

  A proton carries a

  The model of the atom shows ,r0)b9yiir:ntfq ;.ib z e )kna

  A neutral atom alwaysn 7gc1:g-rq)dknh / gg has

  An atom has more electrons than prot;hjte1ybru/4k- xv m1ons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are referru eq;ukswmyh;129 a0ved thquek;svy;29amw1 u0o as

  Materials in which the electrons are bound very loosely to the nuclei and can o24czzyjd * vi7 -8gsrmove ar8 7dv -4zjys2 g*ozcibout freely within the material are referred to as

  A negatively charged rod is brought near one end of an unch4k2v7s4i5uhw fve/ns p 5w) jsarged metal bar. The end of the metal bar farthest from the charged rod ws/4vk)sns5h4j5e pfw vu 2w i7ill be charged

  Sphere A carries a net positive charge, fp ) q4zgxlp/)a6u3w fand sphere B is 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 correct?3pzf)pg f 6uxq4l) aw/

  How can a negatively charged rod charge an electroscope po dd3t/ 3la*mk(i;rm6,s ixk ovsitively?

  An originally neutral ele41 d0zjm z.udkccg2lwa08 tz +ctroscope is briefly touched with a positively charged g+ddtju8.k1acczzw0mzg 4l02lass rod. The electroscope

  An originally neutral 2 ox -mnfs;t5k*2jgzaelectroscope is grounded briefly while a positively charged glass rod is held near it. Aft ; fsgzoxa2*k ntm52j-er the glass rod is removed, the electroscope

  A positive object touches a neutral electrosc;(xumdps*k e2ope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What hapsm eupdk;(x*2 pens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral spvn.ldr u* 7 0ae34byn5kbbf 61l xg5metallic 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 firstnylxr.ga5k 1ldb 3 pue6b7 s045b*fnv 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 Coulo oz( amm 5y9 r y:bp(zk7u venpf/c(t/mkn*d2;mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge obzv4+6,fmqt cb4r 2l is larger in magnitude than the secondob2t+qz4 lcr vmbf, 46 charge.

  Sphere A carries a nepx.zjbw u40 k:m/kqv,t charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic forc qkm4xp bkvwu,/. jz0:e between them?

  Two charged objects att;o 7y)r y2szkeract each other with a certain force. If the charges on both objects are doubled with no change in separation, the force betwroezyys2 k); 7een them

  Two charges are separategh5 )f. ocbxb+d by a distance d and exert mutual attractive forces of Ff5 hxb)c+g.o b on each other. If the charges are 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 tmbg1fyw1 m4 z*he force between them if one charge is doubled, the other chy4mzgfb1 mw1 *arge 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 bo6 ((0k -*qapxlzn 4*pkw uuuxy a distance of 1.0 m. What happens to the magnitude of the fuppxwn(ok6(lq*xk u u *0a-4zorce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.boe)lbsrpu ptj n/ p-7ny 59)30 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to tnbp-ul7s)pr)/b p5oeyj t39nhe proton?

  An electron and a proton are separated by a distance of 1.0 m. Whauf *rb4xy o.gr,hl fjw/,ekq8( t8fn-t happens to the size of the force on the proton if the eytr4g .l-,(xf,/h8e b*q8r jwn fufo klectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center o jbt*2*zmr-m-w.z o nlf a square. When a second point char2*.zm- jonlzwbt- mr *ge 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 square?

  A point charge of +Q is placed at the centroid of an equilateral tri 7l-7*gio km*zwr0tl9b lj e;rangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0emw-7 ktlg;ir*7j b9lr*oz0l 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 ia o vv drvi23idvv4920s not a vector?

  At twice the distance from a point charge, the strength of teorp e1*5y nv(he electric field

  Is it possible to have a zero electricak e4;ih5 +arqtd/g svo-b)c; field value between a negative and positive charge along the line joining the two charg;+ qi)crd 5 skvta g;eah4o-b/es?

  Is it possible to have a zero electric fiv4wy2:zdwj(fo 7i 8djeld value between two positive charges along the line joiwy(7oi4 2vd jzjwdf8: ning the two charges?

  Electric field lines e(n:tqgdf )eea4 2x7mnear psitive point charges

  The electric field s i6t9ijhjs-l dm6;o8qn dihp( uuc4:0 hown

  Can electric field lines interi0 uak3us /6jasect in free space?

  A solid block of metal in electrostatic equilibrium pe 1i31qm8(fcouv fa3 is placed in a uniform electric field. Givo f313(cve qua ifm81pe 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 eachz1**gu ksn4*j:bn qup * hfe.f given the same charge, the electric field (E) midway beffgz njknqs:* .ub*e *4 1*uhptween the center and the surface is

  A cubic block of aluminum restsck8- 1otwibm+ lp(mtw 82if(b on a wooden table in a region where a uniform electric field is directed straigi(wo 8 tlpit c8+f kbm12-(wbmht upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near acr7:n 8rted kx.:w.aon electric charge

  A positive point charge is enclosed in a hollow metallic sphere that x7b/ ww 0da5bidw6a/ zis grounded. As compared to the case without the hollow sphere, the electriw / 6bd/zd xawiwa05b7c field at a point directly above the hollow sphere has

State three properties of 4ydqh:;/zajb4x/7ne)vg j bv 6kzak, conductors in static equilibrium.

State Gauss's law.

  The charge carried by +xtyuxa- ;v :gone 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 man gcu y 4w)*y-rb 7gvd3 uur1o(t.9lnzsy more protons than eles wr4b(dvnugu 1l 9yru)y co .tzg-*73ctrons does this piece of plastic have?

  What is the charge on 1 kg of pr+yl(t+-9q xswm q2g2v/w gurju4kd 5 zotons?

  An atomic nucleus has a charge of i6qh/gw3pirnm+ + te+fht s1w yz1z7 5$+40e$. 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 -4.0 mC, 7,i n64srm 8nmseddau-9ojg ) respectively. What is the magnitude of the electric force between them?sd9me)sunno dj -gi, 86 ar4m7

  A 1.0-C charge is 15 m from a second/ : vtehvpo;d6luq4d/ charge, and the force between them is 1.0 N. What is the m 6uq;:l/vev ddp/o4htagnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. H r.0 h4nh5tdyjow far apart are they?

  The force between a c y)74b y;mmtm$30 \; mC$ 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-j*fjosan1 y:0 +rz :djN force. If they are moved to a new separations1:+ja : ryzon j*jf0d 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 fj40skjzc t2u1gi8b8 tirst 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 anzk8jutsj b4 gi012tc8d direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 ml bl 0 oe0l.5kv1u t,)7cpjmuxd5x *ctC 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. W ce)0b0,cj 1xopxldlvtk*.m utl557 u hat are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the followi r004-okiiaar ng 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 force on the 3.00ki 0r4a-0roai -mC charge?

  A point charge of +Q is placed at the center of x,zckn8;4nvh -wi7bqz0z t,k 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 txbz40t7kz hiv-z, 8n ,qwkc;n he 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0y0b-p+e a+s dc:9i mvp nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net fae0ic sb+mv+d: 9y -pporce 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 = 5.0 nC4)katk u p2q8i is at (0, 0). What is the diri u8kp) 42takqection of the net force on the 5.0 nC charge?

  Three identical charges of 3, tb3 //-e q68bs celhnnkm.)3puuuw p.0 mC are placed at the vertices of an equilateral triangle whi3c/ p)uu/sm- ke 3w6epnb ,nuqh.tb8 lch 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 anz i1laq1ky /s9d +4Q, which are separated by 3.0 m. At what point, o/1k1y9aql iszn 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 zero?

  A +3.0-C charge is at the origin vjfwti: x32s )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 wj)si 2f 3x:vtnet force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Ws yd6tbb 29t2shere can a third positive ch 2b2 ytssdb9t6arge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tot9vjbgc xv+7e( al 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 ahh0s.zvkcl464 k3g8*iqo vlt gainst the force of gravity by the attraction of a fixed proton some distance above it. How far c z6ql*. ghviko483vhk4s0 tl above the electron is the proton?

  Two 0.20-g metal spheres are hung from a co n7dm7 l91lqliy:)c ynmmon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion mynl7qn7 i)cd9l1 :yl 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.ext1yacoo q(e4:w8 /q +v2bryvcar6+ What is the magnitude of the electric field at a distance of 1.0 m fb68v e/q+rty(ew1ao rvcxo:a qy c+24rom the nucleus?

  What are the magnitude and direction of the electric field at az/k19q h.4s4gqk3z- act ishh jg1n7n78hkll distance of 1.50 m from a 50.0-nC charh 9i-h3z17hk8qkg 1ln4ag/shsn4tlkzj c7. qge?

  A 5.0-C charge is 10 m from a small t 3tyc m)/wqi- tfcv1(nest charge. What is the magnitude of the electric field at m/vyc(qw3)f t1tn- cithe location of the test charge?

  A 5.0-C charge is 10 m from d; ufrysx3gy,z5.nw2a small test charge. What is the direction of the electriudgs5 y;fx2rn, .y zw3c field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the 3sjs,eu-kfo- force experienced by a 1.0 nC charge p-f-3eoksjs, ulaced at the location of the test charge?

  Two point charges each have a val+p h kn w-9eliko0 vao.6rjy67ue of 3.0 C and are separated by a distance of 4.0 m. W ok7no+vkilh j pry6- w.90a6ehat is 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 -4.0l5e6 a+a,cburcse8 h 7;ojyt* mC charge is placed at the 50 cm mark. What is the el7y 5j,e6uhs *;oc8elabac rt +ectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a mezq1y f72 /hcho uw.0wqc, vab;ter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field z ,wq1uzq7 y2hw b0/cf;v.ahco ero?

  Two point charges of +3.0 mC and -7.0 mC are placed a5hj9hitqs+/n s8y psd pz. x9(ml,5j bt x = 0 and x = 0.20 m. What is the magnitude of the eysl89 b9p nhzxtsj+s j,5(5 hqpimd ./lectric 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. The 6ax n;:2eguqvc 6ej;xf0 jqu 6last corner is occupiedjj 2;gvxaf;u 0 6un qqe6:cex6 by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the cornerpq b5p)t9,rnco 7dj l/s 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 electrbr9)p p dqt5clnj ,/7oic field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in agvfgwyn/-3,uua))00wafr mu / pdn/e uniform electric, /e30r0w)unpm)nuugf/f-/g y dwava field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mmp )w/jii/5 vmC 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 an electric field of 600yxond; b.3oagac v0cvd,j71 20 N/C pointing downward. What charge must be placed on the ball forda7jcdv o v;. b x13n,goy2ac0 it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is place.-fdt/ ,7 g-p cj*d pemtywj)wd inside a uniform electric field, and is suspended against the force of gravity. What are the magnitud de -ydwjtpj)gm*./-t,w7cf pe and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What i qfzagnn6 11.us the magnitudng61 1.uf aznqe of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carmkd ./w7jhc8 lpl1t8bries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphekh t.b 8 mwcjp1dll8/7re?