State the law of conservation of electric charge.4o56iwg(w/ mnusx -vpd mwvcjl8:; *t

  Is it possible for two negative charges to al8xu+i54dy ley bg 7w3ttract each other?

  Is it possible for a positi m 0ldzh1+nra3ve and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glarf;zr.l/ p2s po(g3c jss rod acquires a pogc;f.r3pjz/so (pr 2 lsitive charge and the silk

  A proton carries a

  The model of the atom sho036): f(2*tiupq cwwsg ifi orws a

  A neutral atom always h- b o47/o3t+owpw.xilv ii)whas

  An atom has more electrons than protons. The atj4.8h*sf u)u)3 lwr :tlglim uom is

  Materials in which the electrons are bound very tightly to the nuos0:,vw hi)tge8 m:l3 8vpwajclei are referred tvlwijmesa8g8wpo) hv0 :3, : to as

  Materials in which the electrons are bound very loosely to the nuclei p7rre8aqiaqy d489 n /and can move about freely within the material are refnq8a8qed r/9a r74 iyperred to as

  A negatively charged rod is broughtx.uf) 85b7 gsux aq8at near one end of an uncharged metal bar. The end of the metal bar farthest from the chargexug a)78 bf uq58tx.sad rod will be charged

  Sphere A carries a net positive lbm zw*0(e s4e*ac n(dcharge, and sphere B is neutral. They are placed near each other on anlz4b(nea *es(mc0dw * insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an emaf1m,xt r (g9z3 3f cudnk02plectroscope positively?

  An originally neutral electroscope is briefly touched ,jwf.p7 hq1,x*imwx kh.2s p hwith a positively charged glass rod. The elecj2k 71xh,h.fwwxp,. sp *iq hmtroscope

  An originally neutrale5 .ab:gan nh8 electroscope is grounded briefly while a positively charged glass rod is held nne5nba ah8g.:ear it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electrosco*l6f:bt 9izd-rbzdv *:em ;mhpe, and the leaves separate. Then a nb zm :tde:;*ml -r9zf*bhi6 dvegative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an inj-t/pw d(5y* h ,utszrsulated 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,ys5rtw dh/t-zujp* ( 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 C c dnjumzbl*/;:p/;pwoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distancl q)1 nxvmlj:64ojj5pe d. The first charge is larger in magnitude tpv6 olmj)q4ljn: xj51han the second charge.

  Sphere A carries a net charge and spheb4zk8ie)u n3 gre B is neutral. They are placed near each other on an insulated table. Which statement best 4n8 g)u3kzebi describes the electrostatic force between them?

  Two charged objects attract)3m* rxp x/vld each other with a certain force. If the charges on both objects are doubled with no change in separation, the force betwx )l v3xm*p/dreen them

  Two charges are separated by a distance d and exert mu,xl:kwm9eei )tual attractive forces of F on each other. If the charges are separated by a distance of xe,m) : elkiw9d/3, what are the new mutual forces?

  Two charged objects attract ea0mz0xyuw+s aali1k 1c9c*6 moch 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 distancscacz myo w6li0x9*+ u m1k10ae between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton a u),4c(,mdrpjrt 6.esj fhi.qre separated by a distance of 1.0 m. What happens to the magnitude of the force .pem.r(djc,4ursf )6 ,i hjqt on the proton if a second electron is placed next to the first electron?

  An electron and a proton are sepan lm+ yq9 e1j(y.k)snarated by a distance of 1.0 m. What happens to the magnitude of t )y(j nl19qes+y n.makhe 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 hajur 7*q ixg8+eppens to the size of the force on the proton if the e qri8xuj7 +eg*lectron is moved 0.50 m closer to the proton?

  A point charge of +Q is plad8-;jgxeazz5.or (mhced at the 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, identizx-jag d;(ho58 .zmrecal 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 ygo+/b:*xm/o 0n kh dhis 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 is the magnitude of /: mhdb o+nxo *yk0gh/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 followin zd7zm/ub 5w.p9emve;g is not a vector?

  At twice the distance from a point charge, the strength oz a::d xc n 4a*yns;u+9nl+avwf the electric field

  Is it possible to have a zero electric field value be4cc*eyoo3fi c joj m/8b 2p.6utween a negative and positivecy 6ij muc2/*ocpooj4 b8 .fe3 charge along the line joining the two charges?

  Is it possible to have er9f md)n0 v5va zero electric field value between two positive charges along the linemf9d50nv)ver joining the two charges?

  Electric field lines near psitive pointjf 5i5p heii)f fz+h.s e6+8yw charges

  The electric field shown(vo eq;6e (x1xblk1fm

  Can electric field lines6 ,: ddtzwdxi4 intersect in free space?

  A solid block of metks o:u yt8o*iak937ljal in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's int9: t uo8*k l3oyjasik7erior.

  If a solid metal sphere and a hollow metal sphere of equal diameters a /bdalq1,(hr rre each give(hd1r /lq,rba n the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wood7kuj)1ud um* ren table in a region where a uniform electric field is direc mu)1ujd7*kur ted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equipxc:*d dwy)6t:hdp c)librium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere thatlew6tpykun 1/.*c dvhe .3d2z is grounded. As compared to the case without the hollow sphere,p.6dd1h cew/y3k v en utz*l2. the electric field at a point directly above the hollow sphere has

State three properties of conductors in static eib.dk:o(95o1a v ph dhquilibrium.

State Gauss's law.

  The charge carried by onew**y(l61aeegrbl +*skx ykha. lg l57 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 c)g4 on(/ g3fvdum9,kqd zxig+57p jly harge of +2.00 mC. How many more protons than electrons do,(l4gd kz5pu7x jnqo)iy+ dgvg93fm/ es this piece of plastic have?

  What is the charge on 1 kg of protovznbi))o. l8hns?

  An atomic nucleus has+k3g +bhb 3-madvl5ta 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 aniu7ord3ud59 rt 5b-rxd -4.0 mC, respectively. What is the magnitudd35orb9u7 5tx-i rdure of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force wih j h1/x78v:sxq 6hpbetween them is 1.0 N. What is the q/ ivphwh:sx7x 6 jh81magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 eer3zc x:z )a.N. How far apart are they?

  The force between a mx*6j:jnqn 5tcd :b)cj3 wi )h$30 \; mC$ 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 f*xo5qjwq,: pt orce. If they are moved to a new separation of 8.0 cm, what is the electric force bqj xq,5*wpt :oetween them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first ns,qkq2nv:blv *0+ r47eovkl charge is at the origin, the second to the right at x = 50 cm, and v+v0k:2qvs,n b*oln 7q kr4l ethe third is 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 placed on wksuz6:2a1tu5lb;f 5man . sc 8lv3 iothe 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 2uf mnso8 ;5s a i:cbauwv1tl5lk3z.6are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the fa0p6ml6dtmq 1++ fxduollowing 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-mC cf6+a ult q0 mdm+pd6x1harge?

  A point charge of +Q is placed at the center of a square, and a second point cha:zo xeznbj04:7n)i*/8 cmun uch,fm brge 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. n8bi4e cz)*ujnn,:/fmum 0 :cobzh 7x 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); Q3 = 5.0 nC is a2/;nlq db:7j -zwme* rus dr-it (0, 0)-emiq:/d7 2zr udsw l-j*b; rn. What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is a)q k60 mgc;n87bu nbf3t 1xlxct (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 cq30u7f )nt xcb 8cm knb;lgx16harge?

  Three identical charges of 3.0 mC are placed at the vertices of an equrp8wmu m.w rrkl3/1s; ilateral triangle which measures 30lm r rk8.wwm3 pr1s;/u cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of z3 r4ftc iuuh8/f16 :k+yfaqtj9d xc3+Q and +4Q, which are separated by 3.0 m. At what point, on a line r f4kt36xuc1: hdy 9+ztq8f/ jafuic3between 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 x = 4.0 mf8z0onann8 t7b kc 7uv0.0lhb. Where on the x-axis can a third charge be placed so the net focunf8at80nnzv.0 o0 bhk 77bl rce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. cp5/xfez z32 v Where can a third positive charge + pfv5x3zc 2/ezq be placed so that the force on it is zero?

  A copper penny has a mass oflymzcc)h54ve(i1m 8tk r*+ nv:,hrp u 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 graiex kt2i t)6ukq+3)ql.lzy m 6vity by the attraction of a fixed pr t)ue6t xzqlqm3+ilkk)i.y 6 2oton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common v2qvv +;e366vm 6me hke3dpogpoint by nonconducting threads which+2v3ekvogvemmp v63hd 66;eq 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 ch7*9;t9i.bq lcrega. pbmjw1aarge of +40e. What is the magnitude of the electric field at a distancegbrjw1*7.. ib9ql e;9pcaat m of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at az0pvu j7xg /z5 distance of 1.50 m from a0uz p 57vzg/xj 50.0-nC charge?

  A 5.0-C charge is 10 m from a small tescr ll70b,w1 cct charge. What is the magnitude of the electric field at tlc cb7,01cr lwhe location of the test charge?

  A 5.0-C charge is 10 m fromt1rvlkvxcjhj+ 3 r 1jqv3+/ )o a small test charge. What is the direction of the electric fqhc3 x)1tl jvjrjr1 /ko vv++3ield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ob+ ym 0zc0pxvxbid4 ;,f the force experienced by a 1.0 nC charge placed at the location of the v;x,0 dyb+p0czx4ibm test charge?

  Two point charges each have a value of 3.0 C and m4u+ 11shcd byare separated by a distance of 4.0 m. What is the electric field at a point midway betwe+u1ys 1mchb 4den the two charges?

  A 5.0-mC charge is placg 1bj. np;w5w9nxcx2b ed at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at thbx29 b.xg pwnw1n 5jc;e 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick an z: f+93luocvyrf7tr3d a -4.0 mC charge is placed at the 50 cm mark. At what point on a linec+lf7urrz3: t9o y3 fv 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 = 0.20 m. 23 i + ntea,bav.d7kwv What is t2vat,kbn wed+iva 73 .he magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squumh hv) evs+4z8c17x3a 2 1h)3cp gabbn6h pxeare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squ)1gh1uz763peb hmhap s hc )ecx8 2v 3x4n+vabare.

  Consider a square which is 1.0 m on s6e.)khlw 0d6icxe e- a side. 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 (0, 1). What is the magnitude of the electexe-i h c)0s6w dlek6.ric field at the square's center?

  A force of 10 N acts on a chax*yphiu hk 0 93t+pm-trge of 5.0 mC when it is placed in a uniform electrici+u-phh9 txk pty 03m* field. What is the magnitude of this electric field?

  A particle with a charz6- upyz1q5j3r hbpc y 2yq0u(ge 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 placed in an electric field of 6000 N/C poi(f hi9z3)yx- rl1 fcx3-yazzinting downward. What charge lrhz3f( xc)3 y9zix-y z-i1af must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chargno+rr.mtc j p/o(zk) 1tj, nz5e of -2.00 nC. The ball is placed inside a uniform electric field, and is suspot)j , k./1nz j5t(oc +mnrpzrended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carriczqfy;-asn)js :;+ ijes a charge of +2.0 mC. What is the magnitude of the ysfs;nqjc+i;: zaj -)electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carrieo d+l5p8 vqqh2s a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphere qov qp82+hdl5?