State the law of conservation of elvbi/:k +/lr w /cshja7ectric charge.

  Is it possible for two negative char;;)dcw) z nj2wyd0ljyi cq-/ qges to attract each other?

  Is it possible for a positive and a negative charge to attract each ocf7we0yyy57y* qo+ jzx4p wfd f4uu.0 ther?

  A glass rod is rubbed with a piece of silk.l* (1*a tu6tkm/lnue;eo va/r During the process the glass rod acqeuuv/ram1tt*l ;a /(k6*noe luires a positive charge and the silk

  A proton carries a

  The model of the atom shows h. rlv;ni/krup/0c* ga

  A neutral atom always ha n, 0 daj40skoped;cs1s

  An atom has more electrons than protons6bze; xv6hg:h0rxjn(r 1e7t(o, ol wa. The atom is

  Materials in which the electrons are bound very tight9;z fsyy -w )bfq-rxy+s07 nqjly to the nuclei are referred t+yfnj y7-qsx)-yz0br; sq 9w fo as

  Materials in which the electrons are bo8dss jg+uur; ym scyw+/8xm3/ und very loosely to the nuclei and can move about freely within the+jrx 8wy/s8 ym;/suusdc 3m+g material are referred to as

  A negatively charged rod is brought near one end of anr 5hl 6k qkt39dao:z3yb: 0kon uncharged metal bar. The end of the metal bar farthest from the charged rod will be charged3a0 :t:y5k z6nrqd3 ok9o kblh

  Sphere A carries a net positive charge, and sphere B is neutral. They are pla47xz ah )ahffzm1x )r(ced near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which star(zxfm71 )a)azh h4 xftement is correct?

  How can a negatively char6 dfr/bqj+vm8ged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touchytyfcg(s q1 )xut/5v 8ed with a positively charged glass rod. Tyvq5tugys1cf(/ 8 )t xhe electroscope

  An originally neutral elecwd8,ug3z6q x4qxd* sx:/ enibtroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the elec6 s*4 un :xeiqgqwdbzd8xx/,3troscope

  A positive object touccff vddw5z4r* e36 fs0hes a neutral electroscope, and the leaves separate. Then a negative object is brought near fw 4*derd56fvf 0zsc3the electroscope, but does not touch it. What happens to the leaves?

  A large negatively cha - ce,;onbbwz,j9*x8 nt jhi*brged object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second jwj-tbze*bbni,n9;c *oh, x8neutral 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 Coulomb constantl4cdpeeq ) )s:/ p2kem $k$, which appears in Coulomb's law?

  Two charged objects are separates,b4j5 p*7 r*fql5fz*pti*ohy nrq)kn+ df+ ed by a distance d. The first charge is larger in magnitude bfrndoisn5y4 ***e+5p7rzt q fpljh) f+,kq*than the second charge.

  Sphere A carries a net charvc4*fj r*(np53djjego e p9t 2ge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the elec*j4g3 9voecpjf(r pn *dj2te 5trostatic force between them?

  Two charged objects attract each otheruy 8ckdhq7i(jvq+z r1wh*5*g with a certain force. If the charges on both objects dcvq1zwr85 *(yqg + *hhik7ju are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutua50 q 8.njafagul attractive forces of F on each other0ngqf58 aj. ua. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects ( ;b7j:)reti jqt1 tcy9j vr;hattract each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between :hteb7v j r;1;)j(q yritctj9their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by xkws8mb; k/ui(,7scem2*e/c 1s nm et a distance of 1.0 m. What happens to e17nx;8mkt2 mk(es/cesi/m uw *c bs,the magnitude 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 m. What happe 8msd*cvs4(jd ns to the magnitude of the force on thsvjd (c *sdm84e first electron if a second electron is placed next to the proton?

  An electron and a proton are separated b)iewi lmiehs 0gf) ))2+rdl8ky a distance of 1.0 m. What happens to the size of the force on+i ))8ri2ls0kh )i l wm)gdfee the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the ce2:v v)bgi0iygpknu1zd (. +9kb fc u*inter 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 poszbgkik (c y+)g1i* bfnuudiv . pv02:9itive 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 the square?

  A point charge of +Q rtx ;/r ,vw-epis placed 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 vp/,tw;xe -rr 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 not1pcokhx)3 in ajy/a10a, 0 rgz a vector?

  At twice the distance from a point charge, the stre8r s1q, :d7.tekssh 57is ahwgngth of the electric field

  Is it possible to hap6 h:py 2xon (hs72divve a zero electric field value between a negative and positive charge along the line joiningdnhyppshv72 i o62(x : the two charges?

  Is it possible to have a zero electric field value betweo ; i a.fp3v6feh6w.leen two positive charges along the line joining th6p h3f.w6.ee fi;loave two charges?

  Electric field lines near py*m u3fz;:iqeo y-o7asitive point charges

  The electric field sh+yu:e cijd+9mown

  Can electric field l5j7wowc2z h dy3-11q0 zmcazod 26kewines intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform(xnuv2toojy54vn 3 )h8g7ycj)d3pw k electric field. Give a statement concerning the electric field in the block's interior. jk x7y4vhy2wp5 3ujn8) c3(votg)d no

  If a solid metal sphere and a hou +y4 sktgd5v1mkdv ;z1-l9m bllow metal sphere of equal diameters are each given the same charge, the electric field (E) midway be5gm+4ks dz ub1mtvdkv9-y;1ltween the center and the surface is

  A cubic block of aluminum rests on a wooden table in e5 dzmjnw /.(b:oe1k va region where a uniform electric field is directed straight upward. What can be /zo:k5j(e.vwem bn1 dsaid concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric c2wpgsm 1oyr430vxbg )harge

  A positive point charge is enclosed in a hollow metofa i1 ock (v.dqr-)*p:vy1 gb /lppi0allic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollowfd-g )ov0p 1lip1 pr:. q*a (oykv/icb sphere has

State three properties of conductors in static equilibri5 r4) n6xnvjn; tj)lbkt tw8+tum.

State Gauss's law.

  The charge carried by one wxh4 8hh ebu,.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( qfq(jy6w c;uf.9jti x7us2d charge of +2.00 mC. How many more protons than electrons does this piece of plastic have?sftqd ( (y.ij672 ;wqxucfj u9

  What is the charge on 1 kg of * t) ggr opa8(zz.8+mt0yzcjqprotons?

  An atomic nucleus has a chwm: nck 0(xl/bhh+g7 ho 5e,jharge 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 char,j6xx l2w9d*vxond1 bge values of 2.0 and -4.0 mC, respectively. What is b oxwxvj6n,* 2xl9dd 1the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second chargejbq li1gk++zmlq4 y+1, and the force between them is 1.0 N. What is the magnig m q1j+ 4ll+b+iky1zqtude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are:ltk m 5wx;0h ;h2 eukc-b.gm p+kv6(qhaxt t/ they?

  The force between a 1c9f(5pdn2gk 6jjzko $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiea1b.bgw/ uw6pv 7q*cvnce a 1.0-N force. If they are moved to a new separation of 7 qb gvv/cu6.wpab*1w 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first u zb:romi7wf6 -4 cuy(+v;grjwmkr 39charge is at the origin, the second to the right at x = 50 cm, and the third is at th73;fcy:w4 rzv ogm-( +rijk 9ru6wm ube 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 place*+i d4evcvl5kn atv4: r h6h2nu*)awud on the x-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 direcruc :el )44vv*a2w+n5uk*ahh vn6dtition of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 =,qfe,y9 nw,vyzhxz9;8 v jnq0 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 ofny0f;z y,9h9ne zq,x,v jw8qv the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a s.az6o qa+dfi,n*)u n lecond point charge of -Q is placed at the upper-left corner. It is obser*u,+a.6f nnaoi )z dqlved 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 charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0x j )(u)pnc/uv.30 m, 0); 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 ju vpu/()ncx)on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0:f7qfq..v v(n 7n.uu8snk )bwmb +dng, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on tnbd (nv8 f.g kqq.uwv+f7.s:mbn7 )nuhe 5.0 nC charge?

  Three identical charges of 3.0 mC are placedt6 2bj4ha.wnojvccfio, sg3y+ +6p;h at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the +ysihf,twcpj24 ;o 6+gcanvh.j3 o b6electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which arw; s9ng-cm8)oyp y(uki o; n-we separated by 3.0 m. At what point, on a line between the two charges, would it be possible to ygi(muosw8o;p)-; c-wk n9ynplace 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 xos 5f9nh6fu(ls(.o jl = 4.0 m. Where on the x-axis can a f.u s6sojo(9l hfln5( third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x =rgcnq r9gzs.j,v)7 + p3ktrh / 2a. Where can a third positive charge +q be placed so that t79tkrzrch. grp s)n g+jv3/q,he force on it is zero?

  A copper penny has a mass ofw)ezb d)+6/gzpgo 5 ez 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 gravity by the ath awpfym6+mc ldxk/- (:7,yebtraction of a fixed proton some distance above it. How far above the elecma-m6 b7l(y:yc fhw,dxp ek+/tron is the proton?

  Two 0.20-g metal spheres are hung from a cov)pu; 5pz)b2wyc bo0zkha .*ommon point by nonconducting threads which are 30 cm long. Bothpyaoc0 )w okhbzbu2p;. z)v*5 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 charge of +40e. What is theod t8o) (f7por magnitude of the electric fiefp)7o ( r8oodtld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field8)rmgkb(-m 0;s. ekk 8j9fa7har r uuz at a distance of 1.50 m from a 5;muz8 k70k.r)fjs8 rgbmr -(euaak h90.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is thec*by(/zn+m /q z hmbc5 magnitude of the electric field at the locationmc5yz+b( zq *ncb/h/m of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is guaz 8 6*iylmmbo(8e5the direction of the electric fi(*zgi8ymo au56 em8l beld?

  A 5.0-C charge is 10 m from a small test charge.43b jp9 djkj+j What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chargedjj3 bjp4j9+ k?

  Two point charges each have a uwvo;h 4cp7x7 value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the7hx 7ovw;up c4 two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chaot f8n m)*dn.arge is placed at the 50 cm mark. What is the electric fieldnda*f8m).o nt at the 30 cm mark?

  A 5.0-mC charge is placed g12tmr ;kn,d6ry8y+dge,w kzat the 0 cm 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 ;tw1k,8 + 6gmgryydk,z nd2 rezero?

  Two point charges of +pu64x 8wectt: 3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnit ewc4:6t8t uxpude of the electric field at the point midway between them?

  Three 3.0 mC charges are at v3gc9++k jvp n z(h dj2b-zd0cw,i2an the three corners of a square of side 0.50 m. The last corner is occupied by a -3+0cjdi2-j(np+v gb wh 9dvza 23nkc,z.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 at thed65,d53s o72hgd f cixgqv;rx corners of the square as follows: +4.0 mC at sfd3 652 5ro7g v xq;hddgcxi,(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 mC when it is placvehala v2k m8l*it, tm*vs( 67ed in a uniform electric field. What is the magnitude of thisllmeamk8vtath ,s 27v * (6*vi electric field?

  A particle with a chy a at3m2c;ov7 rv5lp5arge 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 ,wpzvn,z75n3 zl3r fjr.- tdnplaced in an electric field of 6000 N/C pointing downznfp. t 5nzrld3rwj,3 -zv,7nward. 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. The ball is plaaqc/c79yo)) qu -e ipjced inside a un-i)o7q)uc j/yqe9 pac iform 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. What is the magnipgq. (w( ;7o-vkqmzgf+ t)vv utude of the electric field 5.0 cm fromgkqzg(o ; - vt)mpqv fw(+.7vu the sphere's surface?

  A metal sphere of radius 2.0 cm carries 1v *x1g/fe ,qr z8za1hb zec:aa charge of 3.0 mC. What is the electric fiezecq1:1 bfa8x,*a e/1gzzv rhld 6.0 cm from the center of the sphere?