State the law of conservation of electric charg6.hpl i;mgu r54/np fie.

  Is it possible for two negatsnof0k8nigcz,5*vz )ive charges to attract each other?

  Is it possible for a positive and a negative charge to attract each othezfb v) ; l+mrcnrlqrpe;68;l;;bl d8er?

  A glass rod is rubbed with a piece of silk. D/tyqbwm.bko2(ysq 6fy+/0v b m jv0.during the process the glass rod acquires a positive chardtvbo bb0 w.fy/0.q(my/q sj+kv26my ge and the silk

  A proton carries a

  The model of the atonepi6o9lp8 fw lzt m9*09c-rdm shows a

  A neutral atom always /l*:g9 t5idvy bj.9* uyo cotfjev2,ghas

  An atom has more electrons than protons. The ato i:g7vkyjl; 9n :x;rk;:o1r bbw+ mbgfm is

  Materials in which the electronsp .jn(m 6r*,ynobux3fk4du j3 are bound very tightly to the nuclei are referred to ad3fyo* n3nx6jkpbumur(,j 4. s

  Materials in which the electrons are bound very loosely t8i cyb8j fyb:5j6fj 0io the nuclei and can move about free5j:60 fbiibj8 j yfcy8ly within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged nofbnygdlk ;qc ls,-0d+l-)4 metal bar. The end of the m)l+ 0ll; nk4nydbco,f-gs -dqetal bar farthest from the charged rod will be charged

  Sphere A carries a ne,ewnr ;nr)s fo mo:-lh58u4bat positive charge, and 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. Whichef5-blr naunwrh ,m:s;8)o4o statement is correct?

  How can a negativelyup ,gaar.xs2 vrx udh6 q2,:n1 charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched8 n0cd2pvq zp+ with a positively charged glass rod.vd pzq8p02c +n The electroscope

  An originally neutral electroscope is gfu/wf mh8- gv4rounded briefly while a positively charged glass rod is held near it. After the glass rod is fu wvh4-mgf/8removed, the electroscope

  A positive object touches a neutral electroscope, anduw glxsb4-(; v1oh;ki the leaves separate. Then a negative object is brought near the electroscope, buuswxg bk- vli1(h ;4;ot does not touch it. What happens to the leaves?

  A large negatively cc2: h. g t)g1lz,fvrewharged object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metall .2:tcz ggrv)f1eh l,wic 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 the yp0 y3 h5:zfraCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separate6ifq6 u*m 6hiqd by a distance d. The first charge is larger in magnitude than the smq66*f6qh iuiecond charge.

  Sphere A carries a net charge and sphere B is neutral. mh s)lx djfovo 2+jw8) 13oow/ They are placed near each other on an insulated table. Which statement best describes the elwoxs+ o/1)ljowd8mo3h )2fvjectrostatic force between them?

  Two charged objects attracx*go;o k5.1et 4ujv qzt each other with a certain force. If the charges on both objects are doubled with no change in separation, the force between;5tejzo vg1 *xu o4.kq them

  Two charges are separated by a dista2 m 2j ,n7bemmhcsu8;lnce d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of dj;ns mch22,m e lm8ub7/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happen9askfhiu5l-3 s to the force between them if one charge is doubled,faih5ksu3 9l - the other charge 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 by a distance of 1.0 m. Wha9p5lnm2ri vl7 t happens to the lvni r7 lm952pmagnitude 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 o b7,kj flo(d0rf 1.0 m. What happens to the magnitu(r,df jlk 0o7bde of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens to(k yf+e4hjjq* the sjy+hk4ef* q(j ize of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squareg t zcg)qzp4to4+d 3p;. 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 squtdcgo4;q+)zztg p 3 4pare'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 centh9fha02zaa20y x3z 6t6xwlq qroid 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 magnitu06 xzz0 a9q6q aht2lyh23waxfde 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 v6)ldysu3z2o iv2h9d jector?

  At twice the distance from a point charge, the strength of the es.v3kjtr q-:xc+y8pehk v 33n lectric field

  Is it possible to have a zero electr8g)dlr zhr* y;ic field value between a negative and positi lryd)8 *rgz;hve charge along the line joining the two charges?

  Is it possible to have a zero electric field value between two posi8chb1:abx vj /tive charges along the lja1c/ b8 :xbhvine joining the two charges?

  Electric field lines near psitive px ka;q48 2ht5++g.aa uvco dusoint charges

  The electric field shown 9*s z.qqlcr cj6bl 30:uzwx* x

  Can electric field lines intersect in frelw kotkb- tfo)7q,8(g1z ie;9) hafhwe space?

  A solid block of metas 0q7 b6t0znv(gvsaz4l in electrostatic equilibrium is placed in a uniform electric field. Give a statements4bt 60z 70snq(vzg va concerning the electric field in the block's interior.

  If a solid metal sphere and a hollo.4zs sfh6kbfd s p:d8b-7pem -w metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the-msb s4 kdfbs.zhd:6p78f-ep surface is

  A cubic block of aluminum rests on a wooden table in ed y+ tpqrh+7trp6pi9 f(p45j a region where a uniform electric field is directed straight upward. What can be said concerning the ci+(4pt6d 9p7+f 5 pythrjrpeqharge on the block's top surface?

  If a conductor is in electrostatic t;set8 b*fzk5y8fw0v .isk:t6p, cs dequilibrium near an electric charge

  A positive point charge is enclosed in a holl* yri muod1;.ca)s)i1k wn(x bo.ck0x ow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above th oaciw1k ;k.dcm)0yb1u)ixs*. n o(rxe hollow sphere has

State three properties of conductors in static equilibriumu8,3halewxio8 o/ k ;s.

State Gauss's law.

  The charge carried by one elect3g9obm pemk*/ron 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 mdk mba n1+(.ygC. How many more protons than electr b.ak+gyd (1nmons does this piece of plastic have?

  What is the charge on 1 kg of protonss7-pi tq7 y0wljryf *;?

  An atomic nucleus has a nz .fgrr .+k5zcharge 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 charge values of 2.0)tlzyje:vcs t6i.df ,zx xi)ub9 ((a) and -4.0 mC, respectively. What is the mflz(av :yju dx()bt6.)ic), ix9st ezagnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second c o2gdi jqg)r)qxv64x(harge, and the force between them is 1.0 N. v )qdj)2gr6xx ogq 4i( What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are t:2)rlx7ym g czniq1q 2hey?

  The force between a h uxl.xw188ycb sq*o 1ok; ;zlrp7j+x$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cmipu9,,;v2gddp8yms 6.u* ceyieq lol *26whk apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betwe u iw g2eom,vd*h8ye9.;p6p ckulilqys6d,*2en them?

  Three identical point charges of 2.0 mC are placed on the x-axis3 0:fz6s c if3oetud4s. The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the3e:zsc f 03fs udo6i4t 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 mCwxr zz dh7 70u-i7vv5x is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.-z 7xh7dx w7z5vvriu00 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 f37j 2hrby ulfen4viw7z*)9q u4ycwr -ollowing 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 3.00-mC4rel3*vribw uwc j2 u-hfny7)47 qyz 9 charge?

  A point charge of +Q is placed at the center of a square, and a second point ce rl6t -g9 1khj3jy9ndharge 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 mag9je6grlny kj 19d-3th nitude 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); Q3fv rxid1 )/k ebhggo;kp9:v+)y h*f +0ymymc * = 5.0 nC is at (0, 0). What is the magnitude of the net force on the v:yr9f+ xk)g)vc dgh+y1i o ; /*k pymh*bm0fe5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0o- 7nga3j dhj5b sy8zl,1xph1 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the a-dso7p,jz51bj gl h83hxny1 net force on the 5.0 nC charge?

  Three identical charges ok+ w w;d41c0 wp:6l.iiwdawx dn br9.of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on wdwdi6nxbl +wkair.pwo 1;w:4 c9d 0.any one of the charges?

  Consider point charges of +Q and +4Q, ;- mg;x2fk)a,z i8+ gm1jk +eeczagxiwhich are separated by 3.0 m. At what point, on ae )gi g+zfzm1xxe;;k , a -cm+kjig2a8 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 origiixsg qdi* 7-(mn 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 net force o xg-(*7qdi simn it is zero?

  Charge +2q is placed at the oriy0sn+clva ak9rj(,y + gin and charge -q is placed at x = 2a. Where can a third positi+ r9+ ,j(nvcyaalyks0ve charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tota-tbe v,nldf-0q ud72bl 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 and/0vnyvt0 1c ttraction of a fixed proton some distance above it. How far above the electn ntvc 00d1y/vron is the proton?

  Two 0.20-g metal spheres are hung from a common pohrlgf0a-p4; kint by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion fora-h4k;l 0prf gces 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 3iwm ,rpat 4fdlmrg;)- pmw/*+40e. What is the magnitude of the electric field at a distance of 1 /rw4tm,fg;mw i-3 ap*rd)p ml.0 m from the nucleus?

  What are the magnitude and direction gw/jfja8+j3 cvm 1 aj5of the electric field at a distance of 1.50 m from avmjja13 5 jfg+c /8jwa 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Whlwy t4u 7p)6wxat is the magnitude of the electrx6 w7)upt4 ywlic field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. bkyyp +(po09 c What is the direction of the electricc p0(yy9kobp + field?

  A 5.0-C charge is 10 m from a small test charge.. fk 6x(7nmcug What is the magnitude of the force experu fc.m6 xng(7kienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges eacev63hu5ma9e1 / v a.fc3kyszfh have a value of 3.0 C and are separated by a distance of 4.0 m. What is the elec.fvefhc v z1ku6a/ as3e53m 9ytric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter qrmal;, )hhdxu0z(7pqg( o x1g/v/sk stick and a -4.0 mC charge is placed at the 50 cm mark. What isqs);10hl odah( qu/pzx xvg,m7(k/rg the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cmq* , 1ji ge +vb5ls 6rlyr.-s-aogqa2b mark of a meter 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 sb2ar -5s +br-.qvjg6 1iy*oalqe l,gzero?

  Two point charges of +3.0 mC and -7.0 mk0y 8 n.do5ocrC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the pck05.dyn oo 8roint midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.f5 dg nhr ns;42sx/ih.50 m. The last corner is occupied by a -3ghsi 2;n hr/5.n4fs dx.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a s0 jhs+-iui x3cide. Charges 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 ix0+us -h3cji (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 id7d)tc x36vmu t)qxn2u58tp v s placed in a uniform electric field. What is the magnitude uuv 8qd7t mxcv )ttnd5263p)xof this electric field?

  A particle with a charge of 4.0 mC has a ma.;, rtttwoj2 r a 0ur.((mzncgss 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 k:digmjw. y+9e-g p-pof 6000 N/C pointing downwari-:epy gw -+gkd.9 mpjd. What 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 cg/vk n8n1rj3. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. 3g 81/vcnrjnkWhat are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 -zcoq2ht7al x*(lxr m9at l o k4w)y/1mC. What is the magnitude of the electryz l* (otwxa2cx- /r91q4khl 7a) tolmic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0mfy,9n xq2pq 2 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the nqq2p2y9fx,m sphere?