State the law of conservation osmb)3( h4t1d )xbep zdyugr8:f electric charge.

  Is it possible for two negative charges to atcajg9m-i b+ *-y+*lpb yznb;wtract each other?

  Is it possible for a positive and a negative chark u5*avel+lv 3lj1** wrf8 urwge to attract each other?

  A glass rod is rubbed with a piece of silk. During thetmvn,m8 i-c yb.-qk(f process the glass rod acquires a positivetvi-mq8 .(f,m nbcyk- charge and the silk

  A proton carries a

  The model of the atomggal 6f7:bb6 g/ wz8gkz/3jhk shows a

  A neutral atom alwayaw hj3xv-f4iltf v . * :9tfc5)xexb(ks has

  An atom has more electrons than protons. The:o bvv(.;lmkys1t0 m(e ldy4p atom is

  Materials in which the electrons are bound very tightly to the nuclei ar w 3tls q(za-,*s4; gteaqn5lje referred to (t*l;ws lsa 5j4 3,eag-qqn ztas

  Materials in which the electrons are bnzl)hg391sgw ound very loosely to the nuclei and can move about freely within the material are referred tos9n1lw3g ) hgz as

  A negatively charged rod is brought nean7 )h*h:o9y ck u.npbnr one end of an uncharged metal bar. The end of the metal bar farthest from the charged :.)knn*ubh 9 pyo h7cnrod will be charged

  Sphere A carries a net positive cs: pf:g-(g*ks1 zsjsdcf 5qi l+1.n saharge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wirekp*s 5fc:slazssn.:f(i+ -1 gdq1j gs that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrejkl2 ; 2bm+3iye5voz oscope positively?

  An originally neutral electroscope is briefly touched withltn8+s( uu5trl k11j( 4 tleti a positively charged glass rn8us t1ti1(ull+r j4t(el 5tkod. The electroscope

  An originally neutral electroscope is grounded briefly while a posig,vnsg1 x2 mr7b88cygtively charged glass rod is held near it. After the glass rod is re8,1yng rcxv7 g sbm8g2moved, the electroscope

  A positive object touches a neutral ele ru3*y0k1es2 fb1phwl ctroscope, and the leaves separate. Then a negati02 1hfrpswb l3yu* 1keve object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A n77q -qn7:um)cupfa 2pwo a:nseutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path followuq27c p n:oasp7w7 :mfan-)u qed 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 consta,7.smk0fqd uant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The n, 6u05zvwsuffirst charge is larger in magnitude tfnwu6z, v5us 0han the second charge.

  Sphere A carries a net charge and sphere B is neutral. Th q-l48 erbj(d z5 mo:ek*utp9aey are placed near each other on an insulated table. Whb meudzkrejt* 54o -qlp:9(8aich statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If,o waj1x2mj3 * pu,uqp the charges on both objects are doubled with no change in separation, the force betweej,m,1 *32o puujapxq wn them

  Two charges are separated by a 2-mjkhkks 25c 7omr5s distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/js krs -o75k km2hmc523, what are the new mutual forces?

  Two charged objects attract each 9e:u-zu -nntpother with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original value? Tht u9-nz-u :pnee force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. 3op)so 8ct 7r)8s/rh5ym8 fof x vk6zf What happens to the magnitude of the force on the prs6rh x8/c5zkov8y 7p8fs) o3ftr f)omoton if a second electron is placed next to the first electron?

  An electron and a prot0t yt j7mj3 i7f ppie;9vv4o3pj9v,ie on are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is pla0fii977 vjepjm tpv 3v; p ite39,4oyjced next to the proton?

  An electron and a proton are separated by a distance of 1.0 m.d9r(v gpen(2hz3 u:g o What happens to the size of the force on the proton if the electron is mov( g 9oe3(2phzn d:gvrued 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a sec t)vr+)g b:bvn0ra )oeond 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 :v) ) r+ ngrbbave)0toother 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 equilatn5ic(6f cbr,q eral 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 tr cnqcbi5,6 f(he center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followivoz.gd2h-oyj 3nu59 dng is not a vector?

  At twice the distanc+wb(wdz rzl5 7e from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a nxgn6(ne*:puw:m/k fr egative and positive charge along the line joinier w*u(/p6:k nmn fg:xng the two charges?

  Is it possible to have a zero electric field value between t.iv1cmxzd 5q( s poar/(z,5wito -6 wjwo positive charges along the line joo-t .v/z, mcix5q((r asiwpw ozd56j1 ining the two charges?

  Electric field lines 4i6n o*xsx)l tg1y 5ynnear psitive point charges

  The electric field show1ajeg3hb: j xb cc p6--z*af s/bxf*-zn

  Can electric field lines intersect in free space?q/y 7rd nvsjm 61v7-hryu57 fm

  A solid block of metal in electrostatic c pa6u7dfkz-8iuu: 4 bequilibrium is placed in a uniform electric field. Give a statement concerning the electric field in thd6k4ai:uupb f-uc78z e block's interior.

  If a solid metal spher1dftg mx6v6d m7e:8 zse and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway betdxe817m zt :f 6g6svdmween the center and the surface is

  A cubic block of aluminum rei l1mzubvpaa ia79hfp d y2)4mjx93)0sts on a wooden table in a region where a uniform electric field is directed straight upward. What can be zhx0pl)j 2ipm199 a73b)u d4yfavi masaid concerning the charge on the block's top surface?

  If a conductor is in electrostatic3 gtzv t/em(6o equilibrium near an electric charge

  A positive point charge io+;r (rj b0)jeznq7u is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow b+j ieqjr)ro ;u(7zn0 sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium.k8 ,b (kk,lom(hl* gsd

State Gauss's law.

  The charge carried by one el 8x ;(v5uqvvj u2cu3qdx8ml.uectron 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)kv (a57h2zsqn(4y a6 wtfcoare protons than elesh74 (2a aocf5 a( )n6vwyqtkzctrons does this piece of plastic have?

  What is the charge on 1 kg 6*wg,9 ,g zboefgu6llof protons?

  An atomic nucleus has a charge ofd94jfwc 8f) nex*su; q $+40e$. 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 val hhz9l6;m dyua19 kr3uv;cqj )ues of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between tha3u;quh cylk19;m6jv )d hr9zem?

  A 1.0-C charge is 15 m from a second charge, an ekvcqroi7h6*9m o(x1d the force between them is 1.0 N. What ko 6*ce1ihx7omr 9vq (is the magnitude of the second charge?

  Two 1.0-C charges have a force s-p n-mdu 0x,+mje (kbb0t tc3between them of 1.0 N. How far apart are they?

  The force between a t y x5qak3z82t$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initialtin ld.0lt9:4 ezhe5u ly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 czei.h:etul90t 4n d5lm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axaei gvj-7.4p ois. The first charge is at the origin, the seage4io .-v7pj cond 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 placed on the x-axis. A charge of +2.0 9zk dz88sh n0w d-5qscmC 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 electrostw9- n8qh58s c s0zkdzdatic force which acts on the charge at the origin?

  Three point charges are located at the following 3 k s2gfm zki6jn.9x6 zk;cd:upositions: 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 macj6ki;.f3u:z m dxsn2g z6kk9gnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square/o4gy0 tvr,bb9k bq;*1l nbn n, 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 chark0b;9ylnn1/ogn 4vqrb*tb , bge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0ea zpis 4n .a1p t5w.4jx)i7jn nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude in1e 5jni ajs4)t7.wapz.x4 pof the 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 = 5.0 nC i jl6ai72 eolb)s at (0, 0). What is tho l ei76bl2a)je direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are place48x4+ qx j yihqx4g-qj1 (bcfmd at the vertices of an equilateral triangle which measures 30 cm on a side. What iscxix+j8 4-j x41hyqq(m4gb q f 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. At whg3nf u.v5j j+kat point, on a lijvf5.jg 3nku+ ne 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 and a +9.0-C charge is at x = 4.0 m. Where ond azn,hv 2x6*lh8 e qq,ojvd+.c20kivtrp ;w1 the x-axis can a third ch ,t pz x 0;h*6dchnvvqv.2e8rql,i+aj dk2o1w arge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wh)-lugk8 r5)mgdq 6a ylii)8dwcf i -3 *ad3klpere can a third positive charge +q be placed so that the force on it is zeroc5) wa -)r)glu8dil i3g8dld*-pyfakqim6 k 3?

  A copper penny has a mass of 3.0 g. A totbw3daj)p l.2a cj mb.7al 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 of5*m qc( 2kapsq a fixed proton some di5pa* qk2mqc (sstance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nous7+2nvyso1k wv0 nd -oo6jb z.: 4sotnconducting threads which are 30 cm long. Both are given identical charges, and t.ouv 4 b07d :v16kno-zjyswt2 son+ sohe 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 chargev7muae-k pw3t, j2 fp(mc9z8d of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleus?,-ucjppd tm fvw723(k m az98e

  What are the magnitude .sfxq)u3f 5 bzand direction of the electric field at a distance of 1.50 m from a 50.0-nC xs 35fq.b)f zu charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o,:gxo ym(lx. nh0ks9vf the electric field at the location of the test charge? v9m:y.n,g(xkslhox 0

  A 5.0-C charge is 10 m frou e 5 dth;rev(;ctk1x0m a small test charge. What is the direction of the electric fie e5 edrhtvt kux;(c1;0ld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudem -j7u:jqn0wn of the force experienced by a 1.0 nC:0 qu-wnj7jn m charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distaxd,sg/m dx*tg +2ritbqf;; 10v.bhzwnce of 4.0 m. What is the electric field at a point midway between the two cha *gds t /v.grb+x,xibtm0;d1f2hzwq ;rges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC 3r; ukv3eh/4rpj iturg/-ya; charge is placed at the ;r4k-v;rt irphy3/uga e3/uj 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 meter stis ;y :w2u 0fuopxmc5m-ck and a -4.0 mC charge is m:c pu0sym5-o2xf u;w placed 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 -7.0 mC are placok6.rcpq. t 0led at x = 0 and x = 0.20 m. What is the magnitude of the electric field 0.p.6ltkqrc oat the point midway between them?

  Three 3.0 mC charges are at the three cornersbhvsgh1w) lj 6w9u*5s of a square of side 0.50 m. The last corner is occupied by a -3.0 mC ch 9 hjw6s)1*svhlwgb 5uarge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges aret:s7i .bmz yi:x5 9z war,xywf pm0g:ayc(+ e8 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 at the squaretmw7spg:0w .8yxzy:(5a zxmyia ,9: r f bci+e's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a unit gun 7 m9uey0 a 8.6xs-/xkfl8/trcxiform electric field. What is the magnitude of this elxt/-x 9k8il/u6 a sr.fen8mu0t7 xygcectric field?

  A particle with a charge of 4.0 mC hav vl:6z/ d3sjm)d+w.k0hiyx4rxdm n 0s 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 6000.hsz q(*8rmev-nca7 f N/C pointing downward. What charge must be placed on the ball for it to be suspen*q fzcam - 7.r(shv8neded?

  A foam ball of mass 0.1e-ove4 1vgxod(i.a 1l50 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the elecax(ovolei-v1g 4d e .1tric field?

  A metal sphere of radius 10 cm carries a chp ).0y hw6jepbg.sa x3arge of +2.0 mC. What is the magnitude of the electric field 5.0 cmejs .x 0bpwg6yap )h3. from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the ele s 6u7xv5zw 8gvgf1f m4lep7h-ctric field 6.0 cm from the center of the spherexp 5sg f 17gv 7l-f8w4zv6mehu?