State the law of conservat v:- qlel0su-oion of electric charge.

  Is it possible for two negative charges to attract each other*zu4isc oait/ x46 x*7oiuk;f?

  Is it possible for a positive and a negative charge to attracz3 m)fcp1z r y.jlj)/ct each other?

  A glass rod is rubbed with a piece of silk. During the process the glass royg) h2j/ys jf2d acquires a positive charge anjf yh2/ yg2j)sd the silk

  A proton carries a

  The model of the atom showpc(dowz+ y)u 8s a

  A neutral atom always haskh9( 4hqrbm45t q pv1i

  An atom has more electrons than protons. The atow xw2 -.lhiv; o3y+ptam is

  Materials in which the electrons are bound very tv7 j7: xftxjc4ightly to the nuclei are referred :xcx vjj74 7ftto as

  Materials in which the electrons are bound very loosely to the nuclei and ckh ey)+:f tji ug79-xvan move about fr jv -9x):e+gyhitk f7ueely within the material are referred to as

  A negatively charged rod is brought near one 1,4y-qf)lmz fcrx )r pend of an uncharged metal bar. Theyqzlxr )mc,1- 4 rfp)f end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive chargedc u6lg 8;wmo6z(xu)r , and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly tz(u 6 ;wmc lxurog)d68ouched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod ch,0sovwqc ae+ed p+7q7l5 jrw 3arge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chargeymylp :ieh;9a h8r5n1d glass rod. The elect 8h:pyy5 19e;nilrahmroscope

  An originally neutral electroscope is grounded wp fdp-xwjs s/*fn4xw-;gvgx* . o*v:briefly while a positively charged glass rod is hel-** 4*fg v:ww;-j.sgnx fx/ pvwsodxpd near it. After the glass rod is removed, the electroscope

  A positive object touches a neoj+9p b ecoz3rhot- y5jo011a 70in dxutral electroscope, and the leaves separate. Then a negative object is broughto-j 13pjdon0re + o oib h0tycx9751az near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed 3 gc6q:nd y16m2hvuf1j1 ifjb on an insulated table. A neutral 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 nf b6h1n jg1i:6 yfvcqjum3 d21ot 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 oa, lgknhw8bjh 8gx 2 49z-wga*f the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Th7 i7a;jvyetm)e first charge is larger in magnitude than the second chargye7tv i7)j;mae.

  Sphere A carries a net charge and sphere B is neutral. They areced ) qwd2grt;j+uz bnd3m9+pl3ni 5, placed near each other on an insulated table. Which statement best describes the electrostatr9 q52; z+gdud,nbdinm let j+33p)wc ic force between them?

  Two charged objects attract em7fguq)3jz 0jach other with a certain force. If the charges on both objects are doubled with no change in sepuj gqf3) m0jz7aration, the force between them

  Two charges are separated by a d-avh 3g p+g0,rht vob5istance d and exert mutual attractive forces of F on each other. If the charges are separated by a dis5 ,agg+ptr-03hovhvbtance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to thek+cf +j u(pde (-dl*xk force between them if one charge is doubled, the other charge is tripled, and the separation distapxf + le+uj*-(k (kdcdnce 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 mtlc 8 n-:uhs;z. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electr :tus-;c8nlzhon?

  An electron and a proton are separated by a distance of 1. +gtl4b*:ug1x80m 8vbpq ewb6n*xfrt0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to tqxf1*t rmt e4v08bgp: gb wl* 8bn6ux+he proton?

  An electron and a proton are separated by a distance of 13 p9x0fcw(izfed /-ih.0 m. What happens to the size of the force on the proton if the electron is mov930edpf-( xiz i h/cwfed 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a tqj.w9n 78wr tsquare. 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 center of t.q7n89trtwj whe square?

  A point charge of +Q is placed at the ggui:4t7tnqt w2b x-*aw4. ka centroid 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 center charge due to a third chawxttiu:wa47t4.- qkga b2ng* rge of +Q placed at one of the other vertices?

  Which of the following is n/bma g:ypbhe23 pix.:ot a vector?

  At twice the distance from a point charge, the strength of them2hnsz.s6nw+k :4wew electric field

  Is it possible to have a zero electric field value aip1ljrb.+e ((f(odmef8r). cw o hx3between a negative and positive charge along the line jo (1.i ho()8c+rpabr(f.e fe xlwm3jdoining the two charges?

  Is it possible to have a zero electri -2)sk(cu)q 6egwnxsq c field value between two positive charges along the line2kus6 ex ) -s(qg)nqwc joining the two charges?

  Electric field lines near psitive point chargf tls58- oo)bges

  The electric field shown +g:p2m 3xasjw l :sj:r,oovv4

  Can electric field lines hm1pelj*t- 4rx/ yl3nw. ) rmbintersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifora-2pcgdue rx8w/4 b1am electric field. Give a statement concerning the electric field in the bluxadce14paw-r/ g2b8 ock's interior.

  If a solid metal sphere and a hollow metal sp0v dsj3p+8ls,e ioe8f here of equal diameters are each given the same charge, pev,e0siod3+f j8s l8the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests ou((qxsfg g1g3 n a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge o s1g(qu(gf x3gn the block's top surface?

  If a conductor is in1evnnu,zuzt l5m3+a, electrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is /3)y gfg9int ygrounded. As compared to t)/f ygty9 3ignhe case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductorsjhegz ixz8;6x 14sb;:i4t zbv l:xb(o in static equilibrium.

State Gauss's law.

  The charge carried by one gwxy d(veq7md//0khd) c;/r e 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 more pr:ec(j9x8smu po42a y rotons than electrons does this piece of plastic haxeajc mp2:rsy u 94(o8ve?

  What is the charge onmh-(u f,hbq:pq4* p qs 1 kg of protons?

  An atomic nucleus has a cha *ovi+;qe( (jrj7x;cp sgp3 nzrge 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 charglfi-wh1vt8 /. o f*q pytut4f+e values of 2.0 and -4.0 mC, respecti8 uwf1 f4v.hto *tf- +lqt/pyively. What is the magnitude 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.(pvca lc/gm 84an qqjsd6662k0 N. What is the magnitud qsd6/ajag6 kc84v2cmq(6lpne of the second charge?

  Two 1.0-C charges have a forcevw4nby6obw h2t)-x+ 2xu:jt 9nfr2q v between them of 1.0 N. How far apart are they?

  The force between a mj/7gqe p; *wu$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiencf/3: q88m2qrkwvm+m wnw;ek w e a 1.0-N force. If they are moved to a new separ2 me/ v ;mkkn+8wwwr 3:f8qwmqation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed onfk i4f2itk72s l7znk2k +lbz6 the x-axis. The first charge is at the origin, the second to thel k ktk2ks 2blz24n+ffi767 iz 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 mCog( y05hmv 4ggt w86c0j8lrs x is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark4 6l0t5xsj80vmh ogr8(ygwgc. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: +i m ,4t-)+qte( fgek4f)tuzdhxrx5z Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mCrx+fi ,-)qtt4) 4(eef+uzd 5mz htxkg 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, and a second point c +te)forguxf 8.k6*.rd/prmb8; zaqv .3yf vnharge 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 pngv/ m3ofef..q; 8k .t*8r6bra+ )xrvuyzdfcharge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 o5/ 9igctm /llnC 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 nCg9ct/5 oi/llm charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10: ,q b,wu4pw036ge luban+v nw m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on tbq 3,6pbwuelug:4w 0w + av,nnhe 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices wgz(;qt r1j uc9 k0vykh6).i7 xdgiw+ tis8*bof an equilateral triangle which measures 30 cm on a side. 7.jzu9k6sghidcv +*y8)w q0g txwr(tb; i ki1 What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whfnu81,8ut- 6yutsinu ich are separated by 3.0 m. At what point,61u88su -u ntfi,nu yt 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 zero?

  A +3.0-C charge is at the origin and a +9.0-C cm/iy7c87yxk9 0c p ldbharge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net 7l9078kdcimc/bp yxyforce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x 4epxx 7o 1duu k9;-0bo:d w vib3s;ygx= 2a. Where can a third positiv:yb7opdeou;d; 0xv31s 4bk xwu g-x9i e charge +q be placed so that the force on it is zero?

  A copper penny has a mass4dhfp; xm1e+r f dz2b5 of 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 )c8cy8eg77y azwr9i8 v tky7,wu*l aigravity by the attraction of a fixed proton some distl c ,88a7 7yt z 8ge7r9iwiu*wkyycav)ance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thkos67bqqj 0i4 reads which are 30 cm long. Both are given identical charges, and the electrostati qb7qj 4i0o6ksc 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 elect(4p stnj6s9hk*swgr(ti 7-fd ric field at a distance of 1.0 m from the nuc97wptkf(s-tg n h4(dsr j6si *leus?

  What are the magnitude and direction of th3d-q)ex*h9cc z b7kpd5j7+hy z icmz6e electric field at a distance of 1.50 m from a 50.0-nC chai3yj-ekphc*hz c+zdq6m9) xzd5c 7b7 rge?

  A 5.0-C charge is 10 m from a small test charge. What r 64(qtyh zxv8z1l7:wbew l u(is the magnitude of the electric field ae 1 qtyrbh(lz(u:w4 lwv6xz78 t the location of the test charge?

  A 5.0-C charge is 10 m from ;pt4 )ksuyhfe ; wup.e8js )a q -ltxx84-iom8a small test charge. What is the direction of the elec-s8ep-ux.pq8ltm us)xw;j8;feho4y it)k a4tric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudjj 2 hd2zlj o28osw5a2qx(6une of the force experienced by a 1.0 nC charge placed at the locatq8nz22j loo 5d6xj2 jws(uh2aion of the test charge?

  Two point charges each have a value of 3.0 C and are separ (*7hb1yj oxy7vzc:56dbye jvated by a distance of 4.0 m. What is the electric field at a point midway be*ob7jhe7 y1x(zv:vc jy5b dy6 tween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 x (.mi hi2vpa mez-pq;1.+ ngvmC charge is placed at the 50 cm mark. What is the electric field eavi+pi vx 2q.(zpm-ghm .1n;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;y8 9 v4bki8r0a vklqgk8 )zrv mC charge is placed at the 50 cm mark. At what point on a line joining the two charg8vl vyak48r vzki9b q)8rgk; 0es is the electric field zero?

  Two point charges of +3.0 mC and :xplfvy1 6et) -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between th6 x:)t e1pyflvem?

  Three 3.0 mC charges are at the three corners)ar-bjukk2*pb78k gxo w6t 0 s of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric2b 6oxj ) wk*p0uk7b tkasgr-8 field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corn .bjf5wc 90q3d9wsvjaers of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); .cqw90v df a 3j95sjwb-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 charge of 5.0 mC when it is placed in a uniform elect o7ff4:5 oh)5q bcqdtpric field. What is the magnitb4qf:5 of75pc t qhd)oude of this electric field?

  A particle with a char6d0siz o9a7 exge of 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 in an ml*xw(tod., qelectric field of 6000 N/C pointing downward. What charge must be placed on th l.*xow( m,dtqe ball for it to be suspended?

  A foam ball of mass 0.150 g carr3rf ek/ -jdwz3ies a charge of -2.00 nC. The ball is placed inside a f3/r z3wjk ed-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 carries a charge of +2.0 mC. Whabw)ls upbj/ c5n7a; z5t is the magnitude of the electric field 5.0 cm from the sphj zsc5bl 5 w)apnb;/u7ere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 s.8s q3z *gmunmC. What is the electri.mq*3z8gunss c field 6.0 cm from the center of the sphere?