State the law of conservation of electric chargn ;nahn lf s++.5k,obpe.

  Is it possible for two negative chak/z v**k ekrb7we8tzl7f ; u8grges to attract each other?

  Is it possible for a positive and a negative charge to attract each othe-o tec8vz6 u( zr,p2znr?

  A glass rod is rubbed with a piece ofbe )y,wun:kk+ silk. During the process the glass rod acqnw)eb+ukyk , :uires a positive charge and the silk

  A proton carries a

  The model of the atom sho8 jnv70zaw/f7* bhzetws a

  A neutral atom alwaysi*+pdsxc7ln: ; jar:l has

  An atom has more electrons than protons. The atom is0nj l-,a(t 2n2apg0 fh zlcs1*m4 hizm

  Materials in which the electr+fq jx+78t ylkh 5eo0yons are bound very tightly to the nuclei are referredyo f te7ly+h85xj 0+kq to as

  Materials in which the electrons are bound very loosely to the nu himz 337mb c;a1r;9wlekzsg 74d9aw eclei and can move about freely within the material are refedm7zm4 eck;9ahse79;3 lg3wi a1rzwbrred to as

  A negatively charged rod is brought near one end of an unchartfk4q wpw+(0dged metal bar. The end of the metal bar farthest from the charged rwtd +0(4kwfqp od will be charged

  Sphere A carries a net positive charge, and sphe,xkf, b5 c) li;p ax brwtauv.3g;v0o(p p)tx,re B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Wh;( ibalo,vt,)u,;cfw pbxp kvtx3.r05 )axpg ich statement is correct?

  How can a negatively char h5x vnq-p3gb+z8e.h1summ5bged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched witl6g.aa uc sxw)v/2zq7 h a positively charged glass rw/sag. 7x z) cvqa2u6lod. The electroscope

  An originally neutral elzf;n nt l9va;7ectroscope is grounded briefly while a positively charged glass rod is held near it. After nt vzn;fl;a7 9the glass rod is removed, the electroscope

  A positive object touches a neutra ts9ip/*j yi1al electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to ti1 t *sjaypi9/he leaves?

  A large negatively charged object is placed on an insulated table. A neu(yfefo)w 6i *vtral 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 final charge on ea)o(6 ffyiewv *ch ball?

  Charge is

  What are the units of the Coulol) w,ueucawe/4;uw 6w mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated(28laic7veufl ts *i ) by a distance d. The first charge is larger in magnitude thvc til8uil) ea f2*s(7an the second charge.

  Sphere A carries a net chu54d; *wgml9 jx.tte varge and sphere B is neutral. They are placed near each other on an insulatt ugltx;* 5ed9jmw4v.ed table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. 8mpq)k r e(2avIf the charges on bovreak2(m) 8q pth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutu 8.o da4v(to2p2v fswxl+j;nq al attractive forces of F on each other. If the charges are separated by a distance of d/3p fojq andv8;vxw2l.t(o4+ 2s, what are the new mutual forces?

  Two charged objects attrxouqsf yi)r+/: . 98mnyyufs n09*wfz act each other 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 v:y .0n +)iy* fqus 9 9offmszr8wuyx/nalue? The force is now equal to

  An electron and a proton are separated by a dismqg)m1g90si2a xf9 tjtance of 1.0 m. What happens to the magnitude of the force on the 09mgitq sg x9jm2 )1faproton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distbq4 6s62 mlvmyance of 1.0 m. What happens to the magnitude of the force on the first electronsmvybl 4q62 6m if a second electron is placed next to the proton?

  An electron and a proton are separateh )g7)mpf -0edwcz:sjd 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 cz - j))0 7pwgmfh:cesdloser to the proton?

  A point charge of +Q is placed at the center of )wv wh4hnqvh**sy o+0a 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 square's center. Now, id)h4n0v* h*oywhv+ wq sentical 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 triang12+ juo;-ybrcf yi64 3rjwtkg7nug -zle. When a second charge of +Q is placed at one of the triangle's vertices, an elet-g j3r6yc;-n i+j1uwo ry kf ug724bzctrostatic 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 veymp)6c6zkv h 3 tg.cehtev, 92ctor?

  At twice the distance from a point charge, the strength of the electric fiej+ 06jn-bo5bpz9bn hw v-*ecyld

  Is it possible to have a zero electric field value between a negative and posipt o/-d pj1qdmwb1 o /va60j3dtive charge along the lijoqdjvp da/ 0ot3w1-m6 pb 1/dne joining the two charges?

  Is it possible to have a zero electric field value u( rq2,haqww0;xd pb; between two positive charges along the line p;wu h(q 2;b wa,qdxr0joining the two charges?

  Electric field lines xd, hc6kn h 2 9g)2/nslrfcu)vnear psitive point charges

  The electric field show) ntn:f h, wo97/xyyh qgwh/l+n

  Can electric field lines intersect in free sp rccxdr.)0aj* ez z1)gace?

  A solid block of metal in electrostat/ s:bmj -dol9pic equilibrium is placed in a uniform electric field:sm-jdb/ 9o lp. Give 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 eb tp7),iji5y.em7 fpc,8 cq jtach given the same charge, the electric field (E) midway between the center andec ij7jc tt) .qm8i,f5b7pp,y the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform oc9(j)ohf s;c electric field is directed straight upward. What can be said concerning the 9 cofs(j;)ohccharge on the block's top surface?

  If a conductor is in el2lo+u y wu*ybmj)m8t ,ectrostatic equilibrium near an electric charge

  A positive point charge is hmv3rs9 ibe ,0enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, thei m3shb v,90re electric field at a point directly above the hollow sphere has

State three properties of conductorsr/ rj2 6pk9rb9 cl nknio28z*adakg 34 in static equilibrium.

State Gauss's law.

  The charge carried by ar)dentb5 , bk.5.gc pone 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 hax6mi f7 zc3qc(mi*i7 qnc(fb7s a net charge of +2.00 mC. How many more protons than electrons does thiiicn(*(q6 b7cmq7fx c mzfi 37s piece of plastic have?

  What is the charge on 1 kg of protons. ze rti// 3xg9fpkr*f?

  An atomic nucleus has mm3e3l cb c(1oa charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, se lo2-x6aip*g;ih5i:vnb ou m (parated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magixnv *(;po5aih2u: 6bg i-lmonitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0)o9nohuvxa ,) N. What ih n)vau)oo9 x,s the magnitude of the second charge?

  Two 1.0-C charges have a force between ht5 okf25cat+-xl mv9a:ehwr;s87 l u them of 1.0 N. How far apart are they?

  The force between a sqq*-w3: 8qomxskr5 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. If they tz2o7v +m q(akare moved to a new separation of 8.0 cm, what is the electric force b zq+7am2ov( ktetween them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cha3 .invz.vgmo m n38b5irge is at the origin v5mi o. 8znn.mbi33gv, 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 placed on the x-axis. A charge of +2.0 mC 9vjbj)r0 q6 qwis 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 9wj 0rb6q vq)jacts on the charge at the origin?

  Three point charges are locgf gl3))( k;xmwrvt4xc6g-ygated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.0gg)tfx;c r3g4x6g k- mywlv ()0 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What 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,d;4 js/ fq;xlm 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 isqsl4;xdf/ ; mj placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.:q +cx 1nv.x 3wyv nh/mc/wh4wn,ay 8p0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0) nh+mhc4v wy3a/cqx:.v8ww ,n1/nx py . What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q 7) gns+75fb4ucoovbf2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nCf 75o bu4f)s+bcg7o nv charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equf75wl /g4iykiilateral triangle which measures 30 cm onyi47lkg5 w /fi 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, which are tf: bn eus*ii8da i8*qk4u z)9separated by 3.0 m. At what point, on a line between the two charges, wufdtb: 8 8a iz9ki *)isnq*4euould 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. Whestn 12eq5j;etre on the x-axis can a thijts1e 25qe;n trd charge be placed so the net force on it is zero?

  Charge +2q is placed at the ori.zh-zb y /7wc1in:qa jgin and charge -q is placed at x = 2a. Where can a thiiyqh:z/1n jb.-aw7zcrd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total oc)q28 qjl8xcvf $4.0 \times 10^{12} \; electrons$ 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 gra6jbqj,vwnk ;e2ko*m ka4 50snvity by the attraction of a fixed proton some distance abovena;e2sv 0k *j,o5bjk4q nwm6 k it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point q- o3kd *pdnp3by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces the3 kpoddpq- n*3m 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 magnitud 6:fymmotvj,/ k4t0 dqe of the electric field at a distance of 1.0 m from tvmftd /t o6m,0jq:y k4he nucleus?

  What are the magnituden6*v+2 ma hf mfsqk8en/ 8ajh52i qs+b and direction of the electric field at a distance of 1.50 m from a 50.0vhh f+26fabk88 ssj+ n *i 2mnqm5ea/q-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of r b(nrp- (d-pdthe el(rddp r(p-bn-ectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test che1u:7 tj 4nfci8zqw d4arge. What is the direction of the electr417ef cinuz 8dtjwq:4 ic field?

  A 5.0-C charge is 10 m from a small test charge. What is the ma+ 0z 2d r1*50bak(od jtwitxcqgnitude of the force exp*0 cz2db1w i05q xtrjo+ (tadkerienced 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 and are separated by a distancbpsb3 )ak*bv+w /4pqp e of 4.0 m. What is the electric field at a point mip bavq4)/wk* bpp3+bsdway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sticknt7113 bso9,fxdnpr 91bka)6y fasgm/ qu5ri and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fielr1/,k fa 5 bg6a1n7 msqx3ryu991p)bsond it fd at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stic8w+6mwh6; -paqru iiuk 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 pmii;wuw+8 u6 h6qa- relectric field zero?

  Two point charges of +3.0 mC and -7.0 mC are pln + a*z-wj7yd)ho psw)aced at x = 0 and x = 0.20 m. What is the magnitude of the elowz*n) -w sd)aj +y7hpectric 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. pn jot./zpnwqmib:d9r3)b8)The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square/ bn8p) nr)pdw 3iq9zj.tmb:o.

  Consider a square which is 1.0 m on a side. C w4hn cmd5** ggkk*;jnharges 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 wggcnkhjm * 4 5nd*;*kis 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 is placed in o/) +tn+ knk vua9ivu:a uniform electric field. Wk vkouvu9nat) n+:i+/ hat is the magnitude of this electric field?

  A particle with a charge of vkk66dl-cep-4.0 mC 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 in5w 9zl6t l*l2vjpvq5n an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for ilw5v25 *vn 9l z6ltjqpt to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 z9a* 24p 8ezszoa3r xnk jm.)y y;rvd0j)2b fznC. The ball is placed inside a unifzn.23z y*9z4a)skr0 f xdp;yrm8 )eaj z jb2voorm 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 carries a charge of +2.0 mC. re6v4:l/j rkc What is the magnitude of the electric field 5.0 cm from the sphlj :krc/ r6ev4ere's surface?

  A metal sphere of radius 2.0 cm carrie9nj v.:ng erd1v4h 4k.vce *mc-u6uib s a charge of 3.0 mC. What is the electric field 6.vnmin*ec9b 1u. j6v:-d.v eukh4gc 4r0 cm from the center of the sphere?