State the law of conservatiol-lvgdayq4b8 +g5ve 5p ibr2( n of electric charge.

  Is it possible for two negative charges to; vy.yu 5ziupxkg)/2y attract each other?

  Is it possible for a positive anmw7mt/jm ifs3pn3 1s; d a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod acx4.menc;i*- bm 2 uvusf z:sw.quires a w u 2s;cufv ..z4s:i -xemmnb*positive charge and the silk

  A proton carries a

  The model of the atom showsi9wg6osr+m0gt,)glby7 li3 d a

  A neutral atom always 7s0d:zmmp l(d v(/kjq has

  An atom has more electrons thanq1txu7c8 u 3t 78qyarf protons. The atom is

  Materials in which the electrons are bound very tightly 9im zk413xfdvm4 wf u7to the nuclei are referre vf mf4wz 97m3uix1dk4d to as

  Materials in which the electrons are bound very loosely tk :a3ta; xa 8;w:kvpx6u-raqi.o0 2ojsccl(u o the nuclei and can move ouk(c6a.x2kap3;s; 8a- l0tqacr : u vi:ojwxabout freely within the material are referred to as

  A negatively charged rod is brought near one end of an u orpp*9+xt8qmn f)rn8ncharged metal bar. The end of the metal bar farthest from the chq)8n8tr9n +*mprxo fparged rod will be charged

  Sphere A carries a net positive charge, and sphere Bs9tqmg g)h+m- is neutral. They are placed near each oth+smgg)qm 9th-er on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope po9z,xmz 8-sv o0hs.rbz; a x23jk-jkpwsitively?

  An originally neutral electroscope is briefly tou o.vvf )k.k;bx yd6iu0ched with a positively charged glaf.yu) ik0dx ;.kbvvo6ss rod. The electroscope

  An originally neutral electroscope is gryxoiipbx)j((a ;c3 +t ounded briefly while a positively charged g ;+(ic )a(typixjo3xb lass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touche/6v xeca.wlx8s a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does no wvx 8/ax6lc.et touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. Ah-/ l tx3m:53cqiw ,u;bwm3, 23 bxujp uapxzl neutral metallic ball rolls straight toward the object, but stops before it touches it. Amlhp xjl3pbuw t5 i2z3:qxac3;, 3wmxb, /-uu 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 thhx88nm47 weqrse 0s2* 5ry a)9rnhpqme Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is ,zs)id*j2453xi zgb l8y- yvkyfea+hlarger in magnitude than the-zd fbx jiz aehsy 2v+8i3y4gl,k*y)5 second charge.

  Sphere A carries a net charge and6zo8 kc8xa3-mj a*xwbv tkh;. sphere B is neutral. They are placed near each other on an insulated ta moazxa38;.cxkv8twk6*j-bhble. Which statement best describes the electrostatic force between them?

  Two charged objects attract each othe aq,/+vmau ;f jfnew+ctkd56l4tth+4r with a certain force. If the charges on both objects are doubled with no change in separation, the h/ 6t+5n,fma+kw+udqej 4tft l cv a4;force between them

  Two charges are separated by a dis+h he;43 7l.rqre iizz;wew+etance d and exert mutual attractive forces of F on each other. If the charges are separatedhziq34. e zil;h + e+ew7w;rre 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 thes65.a: wkb v*:jmq aac force between them if one charge is doubled, the other charge im:sav *65bcaq.a: jkws 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. What happens to )+ dohv i, (daf0j qt+* cke30gjyv3oethe magnituddy+g(,edfh*0033 vaej )+ kjvc otoiq e of the force 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 1.0 a* 0 ,g6/r4m tgmrpervm. What happens to the magnitude of the fog6rt,am r mre/4vp *0grce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separw5t/evc7 dzs +ated by a distance of 1.0 m. What happens to the size of the force on the proton if the electr5 wtd+/7cv szeon is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at th7buw j88ie); +*s bta-sprigse center of a 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 t8aw7siie;g)bs 8 s+jpb-* utrhe 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 centroide/u.;ugos: 9 qpkqb f.v8sx0p of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostat;x g.:v pqukqb8e.9 f/suo ps0ic 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 iszy; h(5 umj7rw 53gtcf not a vector?

  At twice the distance from a point charg;6ct g-q(qc( i5weq2 eg ko g5xvb5et,e, the strength of the electric field

  Is it possible to have a zero electric field value between a negative an .zirifu3. m)udze- c21ch+ozj;qtz 3d positive charge al+r td)z uqe3;hic zi j3 c.oufm-z1z2.ong the line joining the two charges?

  Is it possible to have a zero electric fiyb4 7vxzmb.2x0 v y*1 5lf:ba5sfx sjkeld value between two positive charges along the line s* a 0mvbz7 bv14 5k5xyx2jly.:fbsx fjoining the two charges?

  Electric field lines near psij .sz,mxv)yma,clo ; 6tive point charges

  The electric field shonb/-p1rizbn+fgm z s211 d+5p7 let6ctrdx l (wn

  Can electric field lines intersect in f i4( lqhq,fre7ree space?

  A solid block of metal in electrostatic tvs))y,smu9 h equilibrium is placed in a uniform electric field. Give a statesv))ustmh 9 y,ment concerning the electric field in the block's interior.

  If a solid metal sphere and a hooa:h inn ;.u7nllow metal sphere of equal diameters are each given the same charge, the electric fie ;i7.uhnnon :ald (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden texpu1wc7am *,eae)*48f- a q2ko ngho able in a region where a uniform electric field is directed straight upward. Whath*ma12oe q kn*wfu- 7p 84ex cao),gae can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric cl/7wg2cjkcjkx ulc-vj3l582dv z ,:i harge

  A positive point charge is enclosed in a hollow metallic s+a)n3yrm -5gnklfs 6ophere that is grounded. As compmg3l -a+frnn6o 5y)ksared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriumo b94o;9a vz5bt rfhw..

State Gauss's law.

  The charge carried b, r9np;xio6k ty 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 qnc (sc*q5*3yv9 lmbgmore protons than electrons d*5l qc q (n9bsycg*3vmoes this piece of plastic have?

  What is the charge o7nw ih 8o79:evsr93e*f npkz un 1 kg of protons?

  An atomic nucleus has a cyonozp(nyvn zef 1mq tn(+z4 :a1*.4m harge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepoqb0*x0e- t)sqg st 2jarated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between t-bt*00 s txsog)ejq 2qhem?

  A 1.0-C charge is 15 m from a second charge, and the force b hwk0s,(a+amog2tv y (etween them is 1.0 N. What is the magnitude of the second ch m +2(vsywktg(aa,h o0arge?

  Two 1.0-C charges have a force between them of 1.)x ,ydkb sb-z*j2d+r ks*v+cy0 N. How far apart are they?

  The force between a bp,qj*3z18/-n oy cwyd f3iuv$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initia,p5wk 8:4ve6pw/cqrsawng ( glly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric 6e5 kgq /,8wp 4:gvwcrp(sw naforce between them?

  Three identical point charges ofqt9d, c*vz qa8 8bx9i:eiydn1 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the thirqa,n *dt99ci 1dq8y8 :veibzxd 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 is placu0cvt z(-b9uho+hi3 jed at tv0-3ujb+thh i 9(zoc uhe 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?

  Three point charges are located at the following posz*lnh9chak;03 4 qajmitions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00k;hh4maql3j czn* a09 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, )g llot ysxk0w 0jbr,tgoj)6 )j((0ivand 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 txl6jjy0gt()togo) kjwr (v ,0b0l )sihe 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-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = jrme b5ab(/f0 t3d f:d5.0 nC is at (0, 0). What is the magn :0bjf(fr d3b5a/detmitude of 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 m6f zpe(clp9kw p, m-;k(py+ai); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 zp6yck 9;(( kppfl+ae,ip-m wnC charge?

  Three identical charges of 3.0 mCt v-xdfa rb 5yyf.e.2) are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the2vffae5tb. y xy.- r)d electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.f 2w);un:v sor0 m. At what point, on a line between the two charges, would it be possible uw2ov n f:sr);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 onx.-8jz/s i2d a+yt loq the x-axis can a third ch /. t+-82zd isjoqlxyaarge be placed so the net force on it is zero?

  Charge +2q is placed at the origin 16ky. ) 0 8oxh ozuvp:mmg+pjmand charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it 0jp: k8x+1umzgho.m )6oyv m pis zero?

  A copper penny has a mass of 3.0 g. A.o;wm(k* ztv h 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 gk;/gjxihiw,8y-4h q bravity by the attraction of a fixed proton some distance above it. How far q/;h,w4ik b8- yjxg ihabove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting l,r)k/t mdw (qlc)pze1t8 qv9 threads which are 30 cm long. Both are giv(z 8w1 ltcek))q/9dtvrpm,q len identical charges, and the 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 charge of +40e. What is the magnitude of the electric1bt5k; r r,(/ro n eupa(x+cfa field at;e(5/b 1ax nar+ur(ro,ktf pc a distance of 1.0 m from the nucleus?

  What are the magnitude and .(zajlf: m4 pk0ptk4edirection of the electric field at a distance of 1.50 m from a 50.0-k p0kf:t.ap4 zjl 4em(nC charge?

  A 5.0-C charge is 10 m from a smallreq 7b 7kw)mdau no+* q;e6ia. test charge. What is the magnitude of the electrab+ dq;o7u ak)q7 nriwm. e6*eic field at the location of the test charge?

  A 5.0-C charge is 10 m from a sm4(zuv gjwe7t( 3y e0zeall test charge. What is the direction of the electric fieez (( 4uzeyv0tgwe3 j7ld?

  A 5.0-C charge is 10 m from a s sv;8ne99n 7 pls6eyw- (rshrimall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed atn7 nswsi e-v hpe9s8;r l(96yr the location of the test charge?

  Two point charges each h di3etm8c :wf/:.fsa nave a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a poin sd8m:t.:3/eciaf fwn t midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark;kxm)hl5 fxr+ j5g4 yu of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field aty)x ;ljxf r 55+m4kguh the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter 3hxxv3qb 5xwav7f jq7(( 07ctzt7 ujkstick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is a3w 5x ujqfjvvqt0x h (bz37(k7t77cxthe electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x =qet6 g/e.*rcaa9r0ul 0.20 m. What is the magnitude of 0 urgar*e ct.a6 le/9qthe 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. The l5lu/07pn,u mk gsg d+3fh8afbp5d/u3 08lfn7 sbg,h+ma kfg uast corner is occupied 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,).jh)weo .krw+9lhrb9 an bn side. Charges are placed at the corners of the square as follows: +4.0 mC at ,9n+wrb ewajbr )kn. olh9).h(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 square's center?

  A force of 10 N acts on a charge of 5.0 bmf .cwq5.sdj5x7 an1w+y (jqmC when it is placed in a uniform electric field. What is the 1+jaw(cd.jmq . f5y bn sq7w5xmagnitude of this electric field?

  A particle with a chvh85to(kbx 6) 9x ,vsxo;6g nh4qx slaarge 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 electricvcpq9* 7zy: 8ca +qo0df1n eui field of 6000 N/C pointing downward. Wh pn98ziyv u q*oq0f+ce7 :d1acat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. w; pl;c7fqkpyz )tbb8xn)n,eh,3nw) The ball is placed insid),h;ncnz7b8w)tykp qn3; ) ,l epf wbxe a 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 n ;xj9h0pbk,r +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere,9h p0rjk;xb n's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3dl q68 b3 pt8g3qi,2wha*em cf.0 mC. What is the electric field 6.0 cm from the center of thep, bh2 g8qm6cla3eq3tdw8i f* sphere?