State the law of conservation of electric charge.m6:tyo x:61p3ri9n d6 xyw) qvxlwt/v

  Is it possible for two negative charges to atp 8 ,;oucwldob7vm1n g mk)ww.;74mratract each other?

  Is it possible for a positive and a m; 5x:yngl: i, mmuje9negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. D; gwyeg n6h/l0uring the process the glass rod acquires a positive charge and the /lhg w0e gny;6silk

  A proton carries a

  The model of the atom s i3nu- 2gpop:yhows a

  A neutral atom always hasg wwbq8e62q 0b

  An atom has more electrons than protons. The aw ot4 md6jub3)ii,k j.tom is

  Materials in which thn*ig4ib:etz 5e electrons are bound very tightly to the nuclei are referretze g4b:*i ni5d to as

  Materials in which the electrons are bound very loosely to the nuclei and can mog b,;6y+mxb 1x-eb;uy umkd e7ve about freely within the material ae7-y , bbyu6;bgx1mud;ex k +mre referred to as

  A negatively charged rod is bkb /ystig)h38 rought near one end of an uncharged metal bar. The end of the metal bar h8iyt gb3k/s) farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They ) hf)tj 8viuhif1/t6pare placed near each other on an insulated table. Sphere B is briefly t it)i6p8/uf1t)hfh vj ouched with a wire that is grounded. Which statement is correct?

  How can a negatively chawu 2 ;1-8lpyg cqvc/mgrged rod charge an electroscope positively?

  An originally neutral electroscope;: neqw hf )*cg0ir6bn is briefly touched with a positively charged glashf: qign)n0b; *r6wc es rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positivey-kz+nt.laldcm l q 6u;f/u3 5ly charged glass rod is held near it. After the glass rod is re/al6+f ckl nuz3.t-dqm;5luymoved, the electroscope

  A positive object touches a neutral electroscope, and the leaves adsw/3rt2i8ui2c v wr z+j;5oseparate. Then a negative object is brought ne3ro+zuai2 irvds52t j/; ww c8ar the electroscope, but does not touch it. What happens to the leaves?

  A large negatively chargs v0eevy9.;ddtkcc-48rq bg 4iz:nu1 ed 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 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 evd9n. c ze0:4cgd8 iuvkt - ;4yqrs1bobject. 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 couu;rt) ,q ol ze f5g9tbw4fw2/nstant $k$, which appears in Coulomb's law?

  Two charged objects are selw5)5b; ri4cx shxr6lparated by a distance d. The first charge is larger in magnitude than the second charg4x x;h 5s6 i)bcwrl5rle.

  Sphere A carries a ne(k1i-;cwguo (a h* yozt charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best descrioogcki-;azu1( (*wy h bes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges on qpt1qe nofd02jm:0 9hboth objects are doubl1qdotepm:0 n0j9 qfh2ed with no change in separation, the force between them

  Two charges are separated by z-x.++p6ix3 qodwxxz *pc ue9 a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance ofx9 e6oxz ud . qzxp*+3+wpx-ic d/3, what are the new mutual forces?

  Two charged objects attract each other with a fm- qy7wbuihle 8)9-eqorce F. What happens to the force between them if one charge is -lm-qu7b ) yw8qheei9doubled, 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 protoy kl/+1mcda w7y ;+ees4hv3ra n are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron a 7ym4dc3er;lkhys/+w1e v+ ais placed next to the first electron?

  An electron and a proton are separated by a distance o3qaz)- e l/a+l fita..tn,e heh/kwi4 f 1.0 m. What happens to the magnitude of the force on the fit-l+ a a/4lnwe )tae,ki qhz.3 f.e/ihrst electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a dista0, i4qx8luim4 zbax)dnce of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closeiqdz 4x4bl,xmu80 ) air to the proton?

  A point charge of +Q is placed at the jat)k sgd p( 2bsk:wjh:7/a/s 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 chd2t jjssa/kg7:wka (): hb/sparge 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 is placed at the centroid of an equilateral trsoar( ,;tsepws9 0q;yiangle. When a second charge of +Q is placed at one of the triangle's,0(sw9 ayt;e;srqp os 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 at one of the other vertices?

  Which of the following is not a vectorc8i0qkv 8dp +dfwqc7t 2k-qv3?

  At twice the distance from a point chy3,d bb4cw )gparge, the strength of the electric field

  Is it possible to have a zero ;6bwluddsd os+)(w c3w*q p8; a4ak0u ww(ne zelectric field value between a negative and positive charge along the li8(dnd+ob q ws;uwusw 4z e(a3*kda)cp0;6wlw ne joining the two charges?

  Is it possible to have a zero electric field value between two poso;,0xq vy- xznp1uw;witive charges along the line joining the two chargexv ;nwo -;yqp0w,ux 1zs?

  Electric field lines near psitive po1-)by- xa zzbw0oz(jdms /(wfint charges

  The electric field s7 */hopq(+s)cw s dkvthown

  Can electric field lines intersec*o;gqder.hfh2yi jy98:d lox - /x e7dt in free space?

  A solid block of metal in electrostatic equilibrium is placed inum0rg90,h zb lrz+d f) a uniform electric field. Give a z)b 0l+9frz,m0 ghudr statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal r3oq sfhx )l*u a+5kn-3cur;op*awo-cp1 ;t pdiameters are each given the samok+ch5-o; c ps oq l)aprpu- 3f1**axnuw;t3re charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region whs1cq) r nwa78xb* 4u q+qoxjw7ere a uniform electric field is directed straight upward. What can be said concerning the charge on th1 o8 7j *asqx)xu4nw7cr+bq wqe block's top surface?

  If a conductor is in electrostatic equilibrium near an elec a:h+cc.e;m rrtric charge

  A positive point charge is enclosed, 7lw s*hv(qmw in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above, q *h7sww(mvl the hollow sphere has

State three properties of conductors.8rnuzv r(riu p4xv64 in static equilibrium.

State Gauss's law.

  The charge carried by one electrh iu1vne/,z8c5e s1p son 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 +2.0gr u +,iwxp,b,d s.v9s0 mC. How many more protons than electrons dog9vb.u+wsp sdr,i,x, es this piece of plastic have?

  What is the charge on 1 kg of pr2j1mag9 hczt 5(b x:hxs-y.5huioq1 iotons?

  An atomic nucleus hasekdm3:bt i*1: wq2mgk a 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 and -4ji r p sbxnmg(dx:i;zo79n 9(-.0 mC, respectively. What is the magnitude of the electric foj(i: gms-dnnb rz;9(x9o 7i pxrce between them?

  A 1.0-C charge is 15 m from a second charge, and the forc as,(kitz .)ll3gdwn 3e between them is 1.0 N. What is the magnitudltl3ksnd3 )z aiw(g.,e of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. ge2e6j k6n jka,wggq7n11/oj How far apart are they?

  The force between a c nw4j8.5wdk o$30 \; mC$ 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 upc4y8 batc3)w-0gkt force. If they are moved to a new separation of 8-wb 0t ugc4)kapy8tc3.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed oxsp5 ei7a26 s0cw:n adn 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 mark. What are the magnitude and direction of ths si7ex0n:ad cw6a2p5 e electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 ;upc p,u7hs n7 8j8fogmC 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 origpuhu8; s pno77 jcfg8,in?

  Three point charges are located at the followingl9q 7, 7ev* 9i)ycvqd6 fmvfmd 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 ma qf *9v 7,fmlydvv )qm9ce6i7dgnitude 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 cxr;)ga+f: rxp8 )xdus harge 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 charge if a third charge of -Q is placed at the lower-leftfg;d+8:x)r xs) pu xra corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 ndt582opxz p6wC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net fpw6x5 o8dpz 2torce 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 m); Q3 j/grxebl*6z: = 5.0 nC is at (0, 0). W6 *xgr:/lz ejbhat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are k vgzg.6c e7;splaced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the m7g z .ksg;ev6cagnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which,ly3km7j,o opehp (-(2 (rcoou g5oov are separated 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 wojpg5oh((, km73pov oc ,o- yo(u2lerould be zero?

  A +3.0-C charge is at .;zuy1s ivb lw1;.rvu the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a uvbuy .swvi1rl.1;; z third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin ai:u4c)vip31 l*xrx n auo-/nka ; s0ibnd charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it pu-n;i4axbv r)inik1suxa3ol0 c *:/is zero?

  A copper penny has a mass of 3.0 srcj*h4iz :t jf;2u)ujfxe: ,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 24+ 8y fqj1dmys3vikiagainst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron 3 ymyq8 f v+dsk41j2iiis the proton?

  Two 0.20-g metal spheres are hung fro8 3d)(tyfoo pwsd:ddh 6 wa3f*m a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and(dsp fth8o3wd 3oy d:f6)wad* 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 magnid3u5g*fh(l 2r3yxyrs7k9g wxmeg+h 5tude of the electric field at a distancmr (uw xshxk5f7+y5r9eydg23 h l*3gge of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric-ue jesjim79v1xlm3 )xf7 1 uf field at a distance of 1.50 m from a 50.0-nC charge?fj9me sfxj1vum)1 3ue-ixl77

  A 5.0-C charge is 10 m from a small test charge. W(xpuj.dp4 0lwhat is the magnitude of the electric field at the location of the test char dwu0 pljp(x.4ge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction ofihyjld z7m*c2c82sduv/, k/1k1 xfq r the electrq*y c/c,dxkh17z8 2kfmvld2u/1j siric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude kf1n 2 nk2x6n8key; eerr9e,b of the force experienced by a 1.0 nC charge placed at the location r1en6 knke,ry;9fnx22 e bk8eof the test charge?

  Two point charges each have a value 7 gnr*lbr*o4n of 3.0 C and are separated by a distance of 4.0 7rrno 4ng* b*lm. What is the electric field 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 u xpv3o cm53i5mC charge is placed acxm v5i33p5 out the 50 cm mark. What is the electric 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:fm-.czh)z m 5,eng (gtxdjt 2 mC charge is placed at the 50 cm mark. At what point on a lmgf x):z2z5j.-tgn(ce ,mtd h ine 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 = 0 y0m9.adogp: o*r8om g.20 m. Wh* p:dg 0mm .agyooo8r9at is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squsw h i/0m/i;g0u,ev djare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electriue,imgiv h ;0wd/0s/ jc field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placj64d ujv 5 2v:8vt*fie- crvqszq)1pied 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 avsf2qzi4* v-iprud:1vjc 8 e)q65jtvt (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 in a uniform electr2*nv. lr8mr3(h1 k *xzo pdvonic field. What is the ma1 z onx2konrm*8 3(vvdhr.pl *gnitude of this electric field?

  A particle with a charge of 4./e ukok8k*g(q3sm :h t0 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 gjucou:6f ) k,f is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspendedfoj)u: ,u6c fk?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is t65jzx) (vnx:kea)prplaced inside a uniform electric field, and is suspended again:( xr zv5t) jexpkna6)st the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carriocl9 ko r.h*o5es a charge of +2.0 mC. What is the magnitude of the electric field rho lo*5k co.95.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elek ,d,7y mekjl/ kurpu9pn7;9kctric field 6.0 cdp n k r;kk,eumkp7/,9j9lu7ym from the center of the sphere?