State the law of conserxgfhd1 lyn z *d6f6ainv+0k, 9vation of electric charge.

  Is it possible for tzrejw6 a6lu x 7l;s-p- n7cwds(q8g-jwo negative charges to attract each other?

  Is it possible for a positive and1s,igvku. 9s k a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During /b;uz8l yd2 bg;owl5f the process the glass rod acqu;ul5b8 2wb zy f;ldog/ires a positive charge and the silk

  A proton carries a

  The model of the atopukc7pph.zxr uf)m/h23 7/ s mqv5we/.u e mk9m shows a

  A neutral atom always 9q e/pp/y-uqq has

  An atom has more electrons than protons. The atohi/8j; fhhv1fm is

  Materials in which the electrons are bound bs0a:sivs 97m very tightly to the nuclei are referred to asass:ms 9bi 70v

  Materials in which the electrons are bound very loosely to the nuclei and can moh p1of1koea)z. uhk, ffwl5(+ ve(a wf1hho eklof 5.1p+)k,ufz about freely within the material are referred to as

  A negatively charged ro1vb,+ob)neeo;mfx 7 + ly nxzrjjr3/( d is brought near one end of an uncharged metal bar. The end of the meta31;(ref7,bo jbno+)+rx v/nylm ez xj l bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, andip*a9zj4h62xw h 6hfq sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groua*2h qphz6 ji9 4wh6xfnded. Which statement is correct?

  How can a negatively charged rznk4 clwxwl;3o y2l-5od charge an electroscope positively?

  An originally neutral electroscope is briefly toueos0a+d5 qerr+. lu7 bqq* r)wched with a positively charged glass rodlde+s we+.rr 7q0*ra qu)obq5. The electroscope

  An originally neutral electroscope6 zw7 (+rcoppn is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the elewp6p ocn(r7 z+ctroscope

  A positive object toulq8. *x4 ml83ynpzxteches a neutral electroscope, and the leaves separate. Then a negative object is brought near the e n pleq8x4xz8y*t l.m3lectroscope, but does not touch it. What happens to the leaves?

  A large negatively chargedea3cmb f /vfpy iv,5:bh;. ip6 object is placed on an insulated table. A neutral metallic ball rolls straight toward thev3h b.f 6fiim:v y/ppae,cb;5 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 each ball?

  Charge is

  What are the units of the Co0lfaq ; :5c stab/34(bhdena gulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated z(raiq xw7ju, r/r 07 ,zhynpw4 2qit*by a distance d. The first charge is larger in magnitude than the second charg 072w 4wjt yxaiq*rurzh 7qp/z ,,(nrie.

  Sphere A carries a net charge a lzqwi5mw,r1n,f vye83qn5 ;mnd sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic forcz mq v8n;fw5i,1r ,mew 53lqyne between them?

  Two charged objects attract each other with a certain force. jy 7qqhl2 jg7;1cnlcp:bk3 w. If the charges on both objects are doubled with no change in separation, theb.l1 jwn:7k h 7 lpqgqyc;2c3j force between them

  Two charges are separated by a dnk*x0 )b v0 x2:yzhdq w) :zybeydx27sistance d and exert mutual attractive forces of F on each other. d0ezybv* h)b:z yxxx)qnsk2y2 d70: w If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens tin9(r w 5kyrl,o 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 origi9wil n5y(rr,k nal value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. dje /q* 9kqop2sng- 4v What happens to the magnitude of the force on the proton if a second 4gk/ dov-9psqe* qjn2 electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. W3r3u+gct8og l54hmdjhat happens to the magn+g8rhgt5omcd l3ju 43 itude 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 ope5/) mk0 lzu,tu:zxhappens to the size of the force on the proton if the electron is moved 0.50 m closer to the proxmut k)zl o pu0e5z/,:ton?

  A point charge of +Q is placed at the center of a squ:-e gy(n45q2aeh4q ch28tta gg 1 it3cm;wlmiare. 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 cornery2-higcn14 w tm(tm3qeq: 5tg4;e2hgl ci a8a s 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 equi9+kzcj:(x ty 60 ;k 3g.+cpdcywmlqxflateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an pk3wl6:x9.xyt ;dcc j+ q +mc(zgfyk0electrostatic 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 notze e 3o0i-hgbm+tp ,fb u-gyf3pe+-/ t a vector?

  At twice the distance from a point charge, the strength of thekml; 9yec+: vb electric field

  Is it possible to have a zero electric field valux1 o.d6)s-r:fe ful)vwmcpz 2e between a negative and positive charge along thelx- rf) wovmdefu:1.c)2sp6 z line joining the two charges?

  Is it possible to have a zero electric field value between tw /7r uyc7.0xf h-ilpogo positive charges along the line joining the two l7hypf-rxg/7ci .o0u charges?

  Electric field lines near psitive point c:/i9fj5y hvbxp 5 -ifuharges

  The electric field sh2w31-oak orpdp k+zrww2r. j7 own

  Can electric field lines intersect in f 7s wi,7wa g-bbwvbrw0z)s1 7jn+n *gwree space?

  A solid block of metal in electrostatic equilibri* *46ogk t3wfu ftl 8jd3e2plaum is placed in a uniform electric field. Give a statement concerning the electri j6fofate3kwl2gdl43* *8tpuc field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eachu*yiwfkbs /29q j2r l(+xxam-we *5 sl given the same charge, the electric field (E)22/rqllx m* 9wf-i ysk+b5au s je*(wx midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unixmn;i)t(ufsl:t 0h qr sd:l,kx.z8o5+b utr7 form electric field is directed straight upward. What can be said concerning the charge )tlfrm u5s ob7d0:q.+t 8lx x,hz n(tu ;r:sikon the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chare::nhm ikhy 0-zcev) 1ge

  A positive point chargiz w s3aq23pd j qv 5;f/6lxmdcvj90w:e is enclosed in a hollow metallic sphere that is grounded. Asd3q/ 6 vq32w jiwvz: p;ajmx9sl5 0dcf compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of con q44oce*:zz khductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron isfkpjggzjy:vzo 58+ :8 $e = -1.6 \times 10^{-19} \; C$. 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 manv5e*o q/sr w*w+h j+swawi h5c80;wvy y more protons than electrons does this piece of plasti*ic o sejswy8q;* vh5w +wwhw05+/ ravc have?

  What is the charge on 1 kg of protoew h +y))ah5pcns?

  An atomic nucleus has u+lm yd.( i2e5qin) d.ll2gyya charge 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 aoxk xp bli3f3.c1 x2m8nd -4.0 mC, respectively. What is the magnitude of the 3 lkfx. b3 ixo21mcp8xelectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between ti2x:3p cc7 oz5h f1u7lf* uchozqv7o 6,fbdk:hem is 1.0 N. What is o6qd z chu:o7fl2p fh71k3vux5o:*f 7,cbic zthe magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart ajjyvbs x:frxx-l9 )ll51v30fre they?

  The force between a um:ih4bc13yoh 8* 3qkjtrj u8$30 \; mC$ 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 force5/fc;;zhwh vn -tm+ l9llb4hx. If they are moved to a new separation of 8.0 cm, what is the electric fth 4+ cllfwxb; zhl9-vh;n /m5orce between them?

  Three identical point charges of 2.0 mC are placed 3-tl6r z4tz7ajcqp + z+-pilk on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm ma-c4tk+tz37pzlqa jr6+izp l- rk. 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 charp qy40 3n z.j )h *g9jsfa.slyvaw7p+hge of +2.0 mC 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 electrostatic force which acts on the charge at the originfn 9p aj g*)37qs psly4h0.ha+wvj z.y?

  Three point charges are located at the following positionsj gr/l;vqh5( /e.; zkplt- bzl: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mCll5/;.j-tl pqzb g;/r ev hkz( 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 chaa,zs.gbfg y 1spz.7dx 08tfa 4rge of -Q is placed at the upper-left corner. It is observed that an ef,7 za stggbds0ypxza48.f1. lectrostatic 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 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); Qe/gkpzefq6c.8/h u5 b3 = 5.0 nC is at (0, 0). What is the magnitude of kc/56/bpqzh ef.e8ugthe net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.v x2n hlk36qk/1at m/)p 5)qiy5lvdzy30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). pd1 h/z3t2q)6lvq/kya55 im lxyv)n kWhat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatecu. jxj ft)rn(qn:h-6ral triangle which measures 30 cm on a side. What is th f(-r. )6xjj qncu:hnte 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 what p7 pq;g0mtu ef9oint, on a linutm ge70p9f ;qe 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 3qxrk5oh(1wt *z, pk9zuygx0 x = 4.0 m. Where on the x-axis can a third charge be placed sg(q1ohkx * zk5wz9y,pru03t xo the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wher0 2qipgrhw d4ea-x8pal6*8 il e can a third positive ch el2l w-08r8 qai6id pxp4ga*harge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3. lzt+xh-:t.hj-udz kivx f +950 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 af)zwy w*0k7zf ntndx4*ve 5s+gainst the force of gravity by the attraction of a fixed proton some distance above iw)enz n+ dtxy z*vff4s70*k5 wt. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from9 l-pqinumri6 : -thf/t7hm3y a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostripunm tt-:hf 7l-mq963 yh/iatic 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 electilh y/apflfr/exl*1x 2 mx-h )-bb2d;ric field at a distance of 1.0 m from the nuclfih*1ehm;yla/ db ll rb2 2-)xpx/xf-eus?

  What are the magnitude and direct 6 2g;l8a(7ehrzuddviion of the electric field at a distance of 1.50 m from a 50.0-nva(gre l62dihu;d78z C charge?

  A 5.0-C charge is 10 m from a small testet0x3 h8g h8up charge. What is the magnitude of the electric field at the location of the test cha3gu t8e8 phxh0rge?

  A 5.0-C charge is 10 m from a small test charge. What is f y- +hcpeqkcq26uo2(r)/ejpthe direction of the electric fielduqjqp 2y 6 c2h/(ke)rf -+eocp?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudn gs wx3,ejn yw62l4gh,2kt+fe of the force experienced by a 1.0 nC charge placed a,lj2 +2h nny3kwe6xfw st4gg, t the location of the test charge?

  Two point charges each have a valulr:/ blf- gq(dv7m8pd e of 3.0 C and are separated by a distance of 4.0 m. What is the electric field rf gpl7v8(-qd: /ldmb at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meterq(ulo3 q4b:ry ru w+ai5nb s*7 stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electriluuiy(b4ar 3bq7r nqwo:*s+ 5 c field 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 mC charg)oc3u r f;*zrhn8l5 u(. loa /;pjfqyse is placed at the 50 cm mark. yfrl8r;ul) osh.q5f*p;/ u3naz(jco 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 placed at x = zkhwv-sy6wog7m yy; -1h,8a t0 and x = 0.20 m. What is the magnitude of-1v-6my; z, 7hgahtywysow8k the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of cj/p-wcbf l nb+ 4cd85side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field a5j+ccbcdb-f8wp/4ln t the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the etn:o5r-do*n d5j s7 vcorners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1,rnjos:ed7 -n dvto 5*5 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 mC when it is placed gh9rtzebn 1 +il-7ai nyb5 f9.in a uniform electric field. What is the magnitude of this electric fielg9 bl.5b1in+ 7hf9etyn ai-r zd?

  A particle with a charge of 4.03wjjh; r vyslo*.2g f: 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 elecw 1zlv+ *tt9 dfr(m/ootric field of 6000 N/C pointing downward. What charge must be placed on the ball ft 1f+/9oz*rm wd(tlovor it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 yge9ol 1;v1 hrsw y+,e0c/feonC. 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 electric fiwl0f/er+ eye yh,1g v91oo;sceld?

  A metal sphere of raskkto7i2 ux3d9g8j (o2ot q) wdius 10 cm carries a charge of +2.0 mC. What is the magnitude of the electrii o2qkojkxw)to 8u(7dgt923sc field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm h8av 1 fzm 5jurv00po)carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center 0 fpha8jv1omr50vzu)of the sphere?