State the law of conservation z azpak;.s0zz 8+cj : qp;tq-bx:z. apof electric charge.

  Is it possible for two negative charh1* 9p+2 dhjfj;vfhhrges to attract each other?

  Is it possible for a positive and a negative charge to attract eac3iym *maw; wh,h other?

  A glass rod is rubbed with a piece of silk. During the process the glass qo*h*2*i/ jpci:l:wwwncei lem6y*(rod acquires a positive charge and thwmy:6iiiqo j*np 2e:wle* /(*c cw*hle silk

  A proton carries a

  The model of the atom spnoy2 im4h0q ,qci-6 ehows a

  A neutral atom always3 z/r z)c lix+sf;d3dq has

  An atom has more electrons than protons. The ato)s/fz9;xvt+-ol wq yrrxf7d( qhr: 2aixt)i3m is

  Materials in which the electrons are b db;e )80zyrkw:)iae4*xl4dta* r akpound very tightly to the nuclei are referred z*;4rkr:*ad48k 0e)bxwpiy eaal)d t to as

  Materials in which the electrlhku;xohy( cr iz7lz),5f. 0zzzl5g 9ons are bound very loosely to the nuclei and can move about freelyl79fzhk(o0r hl c5,l.i z)gzzxu5z;y within the material are referred to as

  A negatively charged rod is brought near one end cml 9;gr)3 3ngetxhr6 7n +x4 )xtpdmihy -vz9of an uncharged metal bar. The end of the metal bar farthest frommr3r) tiegd7g4xz 9)+n- 6x c39hhxlypn tv; m the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutra 327w79okl/oe ifjz,som 28uf3ejb8j xbyi:bl. They are placed near each other on an ins,ool ubieo2 i zjs:beyj72k7/ b 8mw3j x89ff3ulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elej(n*1)dodo zw j-ka z/ctroscope positively?

  An originally neutral elecp; c wzf94o hn-vnxd1 4+yb)xdtroscope is briefly touched with a positively charged glass rod. zvh9+n -x;op n)1xcbfw4dyd4 The electroscope

  An originally neutral electroscope fb05nln 5e7yg :mj)x2 ye0w0n ix7z:itobcr +is grounded briefly while a positively charged glass rod is hel+7n fr: ml:zox)25jy0 e0enc 50tn 7x wbiigbyd near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral el-7 + eg2d6pmrb9ag lnsectroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What hapg7+se n ldmra2b9pg-6 pens to the leaves?

  A large negatively charged object is placed on an insulated table. A *cr efljn 4+c*uou:s4 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 sto:cocj u 4us4*e+nfl*rps. 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 Couv;phukb so0028nv). .tzjz xrlomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separrlagc3,8bx 3;hh hnw *0ljz,xated by a distance d. The first charge is larger in magnitude than the second h8g ,hll,nbax *3 c0x 3;zwhjrcharge.

  Sphere A carries a net charge and sphere B is neutral. They.e a8 p* neyz2.dcwvj-vnc-w ( are placed near each othe--nwvj ae .* 2nyewpz8vdc.c (r on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certainsdw ) ksd/8e5r(ewg6omp * 9 j pyp5i(3ag3sus force. If the charges on both objects are doubled with no change in separation, tpig e3 py/5p* 9r(ss ajm8 d35sswu) ogkwd6(ehe force between them

  Two charges are separatkl57at6(v6fljdie3s3 bt0 y1 zfx+gj ed by a distance d and exert mutual attractive forces of F on each other. If the charges are separa0d (xjks fi+lt1 jgta33el v6657bfzyted by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Wha7rfjy1 +i1eqd7 wkj s3t happens to the force between them if one charge is 1kw+71r7 sdjy q j3iefdoubled, 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 proton are separated by a db0t1ow* p*dq2a f+l ukistance of 1.0 m. What happens to the magnitude of the force on the protf 0tdb2p *alko u*1qw+on if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 uh 6hw/upd7- b*zhgo )m. What happens to the magnitude of the force on th/*wdhphohbz)ug 6 u7- e first electron if a second electron is placed next to the proton?

  An electron and a proton are sep ycn3,;pmf/b5kmgl 6d2mb 7 tyarated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is btm mcyk/p527dmy gl,bfn 6 3;moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a sq9z);wqc ls+z( o sir(luare. When a second point charge ofqr)9sc i+zlwzl( s o;( -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 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 triangle. When brzb)qt::bh0 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 thbh:q)bbr:z0t e 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 no* a5rctj a89 i10ur3qwa,htsrnx7p .ot a vector?

  At twice the distance from a point charge, thn5gf.q 0vzc,xxsso-rt:hki1 c3v t5 - e strength of the electric field

  Is it possible to have a zero electric field valueg8jyx2 6eydb66)vsj5x9rddg between a negative and positive charge along the line joining the tw66j8j xg dgdbv)y2ed xs9ry56o charges?

  Is it possible to have a zero electric field value betweenpx ++ur) o/odo) uh:gn two positive charges al r: )on/p)uh+ xdog+uoong the line joining the two charges?

  Electric field lines near pa 0dxwfqala7-d-on/4 sitive point charges

  The electric field shown r o/yhn+pqc(4:9uyl1:i0 gy8 eom rhv,la5eu

  Can electric field l lsc,vti-- e,rrvlfn3m;:yq1 ines intersect in free space?

  A solid block of metal in eobcycyh;(j mh9km * lme*8, v)lectrostatic equilibrium is placed in a uniform electric fiem v o;)hc c*mbj9ky8hy ,(m*leld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphe:o9t(2pkxuatj3 z x,ere of equal diameters are each given the same charge, the electric field (Ea9ek ju:xxtpz , t(o23) midway between the center and the surface is

  A cubic block of aluminum rests on a woodfy3/,5enlb fm en table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block3e5,/bml nyff 's top surface?

  If a conductor is in electrostatic equilibrium negunh)yf4s3e,crs tq:dj 3 :z2 ar an electric charge

  A positive point charge is enclosed in a hollow metallic spherq r3,ds.jb jjc: 0zm1ue that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere h0m 3u:zqj,js j1rc. bdas

State three properties of conductors in static equegrw8y: m ya)zd+agh:nbh+tx8 e :1:dilibrium.

State Gauss's law.

  The charge carried by on xbm7uthy2ocntbl. 3+4u+. c de9 bq+le 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 charge of +2.00 mC. How many more protkhan( 9 ;+*uok of6ttjons than electrons does this uo(f9 aj ;htn6tokk+* piece of plastic have?

  What is the charge ort3vsx)4a 5/s:(g yzwyt mj k,de ni42n 1 kg of protons?

  An atomic nucleus has a char-doxtb4hay p (mw26v3 ge 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 oecbj:f 3x4)ge f 2.0 and -4.0 mC, respectively. What is the magnit4x3 j):fg ecebude of the electric force between them?

  A 1.0-C charge is 15 m from a secon,vz ()vjmax 7yx76q jyd charge, and the force between them is 1.0 N. What is the magnitude of6 77vm(v ,zyyx jqx)aj the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. pzyri*rc bd* 5m2sol ;mzpd+vl: m(-ni.c8 y:How far apart are they?

  The force between a s b)hkgts .f8d3)crk 8$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exjfx2nk y -um jvo7c7f 2v6/ge0perience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electricck/2 jf y e6v 2muo-jxv7g0fn7 force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The sd:/iy ;:v buffirst 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 electrostad/y :;:fsibvutic force which acts on the charge at the origin?

  Three point charges are placed on the x-a1lwo 0 qv5ngyau9nq64xis. 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.491luq on 560gyaw qvn What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions:m m4wi4:pk bgh 7;ask/ 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 mg k/m:b 4w4hpsk;7 ia3.00-mC charge?

  A point charge of +Q is placed at we2wit1t- nj uhaxw: 5 f81ng3the center of a square, and a second point charge of -Q is placed at tt85uxe1 w1n2- w g3jtnwfi:hahe 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-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 mr i ,q+*sr/e c3phd 86)p ;uanrtwivq*); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net fe *+rc6r;)d ,pris3vt/qpn *iuqh8wa orce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 d)vo-h/ 7y ejwnC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direh7yej-w)do/ vction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the w/2 )9bz edmhb2rbtx)vertices of an equilateral tr/))9mdwxhbb22 tezrb iangle which measures 30 cm on a side. 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 separated by 3. 1q w, e)ovz:lgb o78l/ll+iuo0 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 z1: /8vulz iqll) ob leo,o7gw+ero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Wh2jf (up ic )k(a)l;njyere on the x-axis can a third charge be placed jinalykc u()2)p( fj;so the net force on it is zero?

  Charge +2q is placed at the origin and charge -d+*0c o/n loajq is placed at x = 2a. Where can a third positdolan *0+ ocj/ive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3. /vt4 fh( vt;gle;cx:x zl7xh-;.6cu: gzqpzx0 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 attraction of a 9a2ktjw5mc/ifixed proton some distance above it. /ci 9wt2jak m5How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a com4do pb;)wwk 2 qg87w yr5yjo6vmon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion force2;rv k)bg6 j8w57yd4wopqwy os 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 eqxrb ta6p/j30ak vb (u )v:g-slectric field at a distance of 1.0 m from thgu0krap/av tb)bs- qv3 x(6 :je nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.5 hj42+9 y vuc(l ,kfypnycut4)w; mv-b0 m bvuumyc k4vyly2,-;f t9h+nc)w4p j( from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test c5fxsftq iquel9p1 2xq,: a 4;rharge. What is the magnitude of the electric field at the loc faisq 5xq942 ,l:xeftqurp1;ation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the p+t63if ozf0:4q hz yodirection of the electric fie:z y06f3hiqt+op 4z fold?

  A 5.0-C charge is 10 m from a small test charge. What isis+lrfunldbft7f73 xo*34sg z a h2-0 the magnitude of the force experienced by a 1.0 nC charge placed at the l3l t0zr4 3s7s*+ 7a f xoufgnbfd2h-liocation of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distan +ylu2 (6aaagace of 4.0 m. What is the electric field at a point midway betweenla+a(62 uayag the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a jx7 3ca s+b2 d2sc9qwf4 (wuro-4.0 mC charge is place2uxqow j 2(rfwab d7 3s94c+csd at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed a 7w,:df) j 6kk;-p mfkr2kiydat 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 fp6) kf2dykk-7 f wdam,i: r;kjield zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.2u / usb4(m-hpi0 m. What is the magnitude of the electric field at the point midway between thehub -i(s/4 pumm?

  Three 3.0 mC charges are at the three corners of a squarsy*t07z nop owl * dach7+7h-he of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fie +yo ts*7cho-* na 7lhh07pzdwld at the center of the square.

  Consider a square which is 1.0 m on 5hpv boon+45yvw6 /m oa 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 nv y+v5pomhbw/ 46oo5 (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 mi- :;boeevx o 8hblu27C when it is placed in a uniform electric field. What ibl- xheoo2 ;iubev: 87s the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a aary bag9l.j a t7-,2.knpay1tn; kx8 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 eleet700/kzwb c )i: xworctric field of 6000 N/C pointing downward. What chat ic0)rzowe/:wb x k70rge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carrie5:x;ew sf )p5xvg fih3s a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against thex 3gfhxip;wfv5 :)5es 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 mCy xup5 r5)h0gw :yfrq*. What is the magnitude of the electric field 5.0 cm from the sphere's0f5 hyw)yqgxrpu: r5* surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electripl2gp/i *zo:roi*a 4 jv0 p,po/nlf.ic field 6.0 cm from the center of thep/pg orjiip.02 pv /zi lafn4o**,lo: sphere?