State the law of conservation om8 h3ji0zs-ul ;hsl-ff electric charge.

  Is it possible for two negative charges to at l5 w3ug3u95zwaz6t rvtract each other?

  Is it possible for a pfo ql15 v:s 3.pyngn,rositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod a7aqj((z9 ical 5k 2rkucquires a positive charge and th ck5ja2ikur (lzq a9(7e silk

  A proton carries a

  The model of the atom s hswe7a;rh).*m ah-nafe9 d4 ahows a

  A neutral atom always,b+-1)mqsxdp ila jjy 7n+i3)y ,iuaa has

  An atom has more electrons tmwclda (7+pt4han protons. The atom is

  Materials in which the elecbhi; o, p-j5xdtrons are bound very tightly to the nuclei are referreddixp5j,;obh - to as

  Materials in which the electrons are bound very ln-os79v ulsm 3v sn0o2 )hl.cfoosely to the nuclei and can move abouts9 ov7ln3on-u)h fl. v2s0 mcs freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged me75o cnzjgigj46i 1 y;;zk ( t23apfifetal bar. The end of t67;; n (aigf31kji ige2zo tfczjp 5y4he metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive5wad q4d4c -ok 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 groundqa k4-d4d5ow ced. Which statement is correct?

  How can a negatively charged*u .da7knn c c zr1k)x 4aoa gy7:t4yxajw*86q rod charge an electroscope positively?

  An originally neutral electroscope is oen27tz j1( w:d+slffbriefly touched with a positively charged glass rod. fwdzjlt+(ne 1f 2o7:s The electroscope

  An originally neutraldhp5s-ix uys4k;0l1 (h(ag(:q injs w electroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electrosc1 (x a-h:(;qlnui yh s(wdkp4ijg0ss5ope

  A positive object touches a neutral el zyh e p1od(qt/p0v3e3ectroscope, and the leaves separate. Then a negative objev33eto0 (pp h/zyed q1ct is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. mzcv log+ h/oa yoa5mpu(6446vc9+ihA 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 not touch the negative object. At no tic6+vo moi/c6g hamuoz5ya+4ph(4lv 9 me does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constcp 1ml+) gtx:uxc5jk 8ant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge i,ko *dc6f kt o/qpt;6rem55lus larger in magnitude 5 mod /6e*fkltpcq5 ku6r,t;othan the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are plkq *g4 tsspgql,8 w(h6aced near each other on an insulatsq6k s ,qhgg*8tpl(4 wed table. Which statement best describes the electrostatic force between them?

  Two charged objects attract epg/xr.d/,7pxba 8 yh+8rsuxr ach other with a certain force. If the charges on both8bxrahgu8ys .x7r+d,x/ p/p r objects are doubled with no change in separation, the force between them

  Two charges are separi5k jlcw8syf9+u (h 7mated by a distance d and exert mutual attractive forces of F on each other. If the charges are separated b7f jw+ys9i( m8 h5ukcly a distance of d/3, what are the new mutual forces?

  Two charged objects attract each oel1vpd3 cy:4qther with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and th4pydv ql:1c e3e separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proto kp5gk6 ie/7:fgzk h:xn are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electropfk6k5 igke/:zxh: g7n is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happey ebs (dg wd-0p/e/)yens to the magnitude of the force on the first electron if a0(-) y/dpe /bwsedg ey 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 b r,-+ ewfqk,h-6yfz pdp)xy1the size of the force on the proton q,)-dx wpy6r+f f- ky h,z1pbeif the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at tki*n(8-oge h;m*qglgfb2 y0v he 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 the square's center. Now, identical charges of -Q are placed at the other three corners of thlg-fv( q0inmg* ;82*keyboh g e 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 qpf8jdv7o+a vfh-ef bkr+)8: 9:j dfsplaced at the 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 charge of +Q placed aqsjeff: :+db v7oahfj9k df r v8+-)8pt one of the other vertices?

  Which of the following is loyexp )s0wvk r160 v*(d.cgr:/mkf anot a vector?

  At twice the distance from a piflh a-30ouf9oint charge, the strength of the electric field

  Is it possible to hatwzr +yg): jh5ve a zero electric field value between a negative and positive charge along the line joining5h gy r+zj:t)w the two charges?

  Is it possible to have kc2 r/yvi)l*3t s:do0sa3w lxa zero electric field value between two positive charges along the lii2al st)x*/yko3c0l dwr: s3v ne joining the two charges?

  Electric field lines near k6t p*6jb;vnkpsitive point charges

  The electric field showpi(6q/jhp,ydw vbdcz3 yt8:8 - so5 won

  Can electric field lines4 fl / kuz:nvea.et1ah19 oe2q intersect in free space?

  A solid block of metal in electrostatic 4q0u6y:hfg os ht81crequilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the blog6yo1c hf4 qs0:t ur8hck's interior.

  If a solid metal sphere and a hollow metal sphere of equal dirh0t mgnv9wz 1 /+r++10pbnka 8ahjmyameters are each given the same charge, wta8 ny+mbv 0kh 0ragzj9pnh1/r1+ +m the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woodop/ns* 5u2e(ne;viqys x++y y en table in a region where a uniform electric field is directed straight upward. 2 e ny+ex5yn is*ovup(s+qy/; What can be said concerning the charge on the block's top surface?

  If a conductor is in electr5dbmh1 amk8: n 50hlkiostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphergh)juxp 8:c1ft9yp/t5 q .kide that is grounded. As compared to the case without the h5ucktt pgq9 18/.:hdp yj fx)iollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductpl*f) zrc6tw. u p6ff:ors in static equilibrium.

State Gauss's law.

  The charge carried by one electron ioe,lp,dp/g,s00j p it5as0i w s $e = -1.6 \times 10^{-19} \; C$. 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 protons thaoj/y5jf f6vn2)+byw gn electrons does this pf gv)b/2+ojn6jwf y5yiece of plastic have?

  What is the charge on 1 kg of prtj+ u ,jqeub,0otons?

  An atomic nucleus has a chargu )2scmj)ba+ i/tcq u,e 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 vaz34 xi r+wy7uy6o+9y l4pv3w95 kbxxb2 ticaqlues of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betxwkz 94xlq 9o43bbiu+y63ctiw 5vya 2r yx+p7ween them?

  A 1.0-C charge is 15 m from a second charge, and the force between th-3q.*:0euw znfc (qsbaj9dyrem is 1.0 N. What is the magnitude of ths(9r en aq*z uj:.b-c y0df3wqe second charge?

  Two 1.0-C charges have a forc +zjwx24u7lwc e between them of 1.0 N. How far apart are they?

  The force between a **vpp87(9moy ,sy; giklf ua,bl4 ldw$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, ii5 tvt+c*zr *vnitially 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 force between thertctv+ i5v z**m?

  Three identical point charges of 2.0 mC are placed on t3fx kig .kxj0,. zwr;hhe 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 mark. What are the magnitude and direction of the electrostatic force which ak0,whxi .k z3;.jrgxfcts on the charge at the origin?

  Three point charges are placed on the - m*cd)4acqzwezr9ur0s j:+xg q6v; fx-axis. A charge 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 oriu wx :9*c;)a emc szrdqj 6qzrv0f4g+-gin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x ly -4 svhn3e*cl ++gyz= 1.00 m; Q2 = 3.00 *hll+gn+ vs43y-c yzemC 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 +Qa2/aqj- o,ldx gkig 7, is placed at the center of a square, 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 ch7-o gd,aa,/klxi2 jq garge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0 l0ob;0-yql (xiru n3z); Q2 = -1.0 nC 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 nC chr03qoz -x0b ni;lu(yl arge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at e6 87c( mux lu/et mm:qhr+1 nnc+.wcq(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC chargemh7tunerx+1( cq lc8q+ .m6c/ m:un we?

  Three identical charges of 3.0 mC are placed at the vertices of an eqhnv-jm t .(x7zq6 2ozsuilateral triangle which measures 30 cm on a side. .6x7q-nzmjtsh (2vz o 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 sep)1e30o httlgmarated by 3.0 m. At what point, 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 zetth)o lg1 30mero?

  A +3.0-C charge is at the origin and a +9.0-C charge inmm*d9oe9ab)fpo b+ ( s at x = 4.0 m. Where on the x-axis can a third charge be pm )na b po*d9(bm+9foelaced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is /, srp-tpyov2 placed at x = 2a. Where can a third positive charge +q be placed so that spo ,-/p y2rvtthe force on it is zero?

  A copper penny has a mass of 3.0 g. 4sz7e n9pvtpb,6ed *cA 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 thekycpxf:+0h 7ecd*e)c m musxq q+34 *i force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the protons*c hxi7e3k) exq f+4mqc*+0d:cuymp?

  Two 0.20-g metal spheres are hung from a cov mi *bs;f:0rwmmon point by nonconducting threads whic:mr*sf ;i0bwvh are 30 cm long. Both are given 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 chad,iucfj8 0j;h2xi ( cxrge of +40e. What is the magnitude of the electric field at a distance ;dxi j 2xcui0fh(8,jc of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of)o nqqs*m1q+ 3hijr h-- ssqr8 1.50 m from a 50*q jrhqrsqiohq 3-+n -)s8sm1.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude)5f9dlywn:ji ub m(a2 of the electric field at the loca(9dnwlfbji :ay) u2m5tion of the test charge?

  A 5.0-C charge is 10 m from a small test charge.vz0 +xm3*rk bh What is the direction of the electric field?m+ zk*v hrx0b3

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of zz od*pmk,k2 5he 9jf.34;w2sn niy ii 85qctbthe force experienced by a 1.0 nC charge placed at the location of the test chanb 8kk qij2ni, pm5ied wy9oz4;z.2 ct*hsf35rge?

  Two point charges each have a value of q 4dsgxm425 /4jhcn az3.0 C and are separated by a distance of 4.0 m. What is the electric fiec xdsn54aghq4 zj/m4 2ld at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charge :( -isnvqs7ia is placed at the 50 cm q7nis(s :-aiv mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm, w38rxs(k2w1x,bu1;dxb gm koa tl8l mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At wharl (x8kmw awx2 ;u11b8tx b,l,sdkog3t 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 = 0 and x )y-6hi(y2mq da ;xpe *q;bsz o= 0.20 m. What is the magnitude of the electric field at the point misa6y ;q)p-my*qi bx hz(;d2eodway between them?

  Three 3.0 mC charges are at the three corners of a sgs96vrqvk5 t 8quare of side 0.50 m. The last corner is occupied by a -3 vks5g trv6q98.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed z:*mb ag(bheg5(8lvk 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 is the magnitude of the electric fiebg(g:5 mke8*a v(lhzbld at the square's center?

  A force of 10 N acts on ai:yq7vwt 9)t 8v bvy8a charge of 5.0 mC when it is placed in a uniform electric fbv8 v):7qt vw9it8a yyield. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a ma;jjrtu6v aw(eqc3g mp t+4(n:ss 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 *(sk 6ngw0ap x0h.i ef.hr;i3e;tpl yof 6000 N/C pointing downward. What chareifk..nrah xp e;3tp h0gs6(l *0;wyige must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00zh 3 rzoi,p,-7re gi0jz g -zxn(z*xp6 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and dirijzg,z* i3p reghx ,z(pz0zn-o7- xr6ection of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is(xg3k:sqh udl: rnd24x2mja 6 the magnitude of tku:q: 6d2jxd4a2xl n3r s (ghmhe electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0.)u oq/g: phbd cm carries a charge of 3.0 mC. What is the electric field 6.0 c.g) p:bh/dquom from the center of the sphere?