State the law of consed 42r5lcf:5af3t3iud jp 4bv0xl15vl dt(h bgrvation of electric charge.

  Is it possible for two negative c *2rarb yn:( q) ,i/u*i5k18d owtmpf*womeyzharges to attract each other?

  Is it possible for a positive and a negative charge to attract each othz4 nlw,,av qf*er?

  A glass rod is rubbed with a piece of silk. Duringxqvrpz7zvv cd9hh574 k/ djcu6wh;1 2 the process the glass rod acquires a positivhvur jzxh261 /7qzpwc4 9dd;cv5 h 7vke charge and the silk

  A proton carries a

  The model of the atom showe2k78yo 0d-:c 3wd3ghqivg dps a

  A neutral atom always hasw:3jnsof+ o9y

  An atom has more electrons than protons. The atomb1v2kdgg + 1rp is

  Materials in which the electrons are bound very tightly to the nuclei are referr0 sd-oqs f,0(a;fuatj ed tos 0af 0jd-qoatfs ,(;u as

  Materials in which the electrons are boundtxzkr5(;a, zo-3+ws7 q2wb9 lk nssbt very loosely to the nuclei and can move about freely within the material are referredlroxk wb,tkq7 5-ssst w9z(32+;n ba z to as

  A negatively charged rod is brought near one mg3taagmc-dy-1a -g3vf920ht sm/j v,(yrj iend of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be/yit0ga tymr -vh3(2 f-j9vmg-gmcjd s,3a 1a charged

  Sphere A carries a net positiv(.uwm ixe1w .ie 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 grounwmi1e ui. xw.(ded. Which statement is correct?

  How can a negatively charged rod ew rlm(nkccpb5lnez8c4/-5 *r l x;* wcharge an electroscope positively?

  An originally neutral e,*srtndu 1 z +)zlo(dolectroscope is briefly touched with a positively charged glass rod. The electrot n(*d1d zu,o+rzls)oscope

  An originally neutral eg- aq:plg06fp7z+imax/6 4i7hnncf d lectroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, them:6a4q7 n 0p6zn/7cilfpgif a hx+dg- electroscope

  A positive object touches a neutral electroscope, and the leaves separ5f*/*ry; i)iti bk qu i+2piaaate. Then a nega;ii2fi*5 q*iatyk )buairp+ /tive object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged obji 8rwwdr2;m.qls,a ikydr;0 7ect is placed on an insulated table. A neutral metallic ball rolls straight toward the object, bul; .riy7;0w 2dw iqsar,drm8 kt 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 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 cd0 fy3i3y ipd0k)qqh.onstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Tti(wkwf i10x 4y kh (f6vf.sg(he first charge is larger in (ifykt.(kw 06f4 vhf1is g(xw magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near eac38pwekp5wf:nxq.u:w h other on an insulated table. Which statement best describes the electrostatic force between themq .wp5np xu8::wke fw3?

  Two charged objects attract each other with a certain force. If the cha66w*d 5c8zd2 g;kwxhjuf jp f)rges on both objects gdd)z6f wuc2j x5w fp;j*hk68are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutua8shlj; b,x:f /sz bw*xl attractive forces of F on each other. If the charges are separated by a distance os, w/zb jf *x:8;xlbshf d/3, what are the new mutual forces?

  Two charged objects attract each other wipj 6+fd0qg6omiaobp;zz ; t mg0r25:gt r,e7 tth a force F. What happens to the force between them if one charge iigjap r o f+ :6tgz2m,mdbt0 t r;0z57;pg6qoes doubled, 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 be wrh.p6on j-chzu;ku98r(ey8 r3a ;are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the firrweo a.y96;pnh3 e8kj( czrr ;buu-8h st electron?

  An electron and a proton are s0 iv2(2ijb*, rcpiiq ieparated by a distance of 1.0 m. What happens to thj ,ii*r (i2viip0c bq2e magnitude of the 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 happens x8sx qj3(6nq2 4iwgmdto the size of the force on the proton if the electron is moved 0.50 m closer to xid3ns 8jgmq4(x 62qwthe proton?

  A point charge of +Q is placed at the cent .zs nl/xz+4jf1v4:can;jlwbn.i*rx*a ov8ter 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 the square. What is the magnitude of the net electrostatic force acting on the positive charge at the center of the squaj / a;.vncazv*.t1 :*slxio+8xn rz44bn jwlfre?

  A point charge of +Q is placed at the centroid of an em3o1)nwc .sbs m: xrr:quilateral 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 at one mwx.msos:r): c3b1 rn of the other vertices?

  Which of the following is not a vefrt0/4(y v fdmt8k4gwu96zumctor?

  At twice the distance from a point charge, the strength of the e1dw tbnqe io.c6x4 /3dlectric field

  Is it possible to have a zero electric field val v0-ub1qger c8ue between a negative and positive charge along the linv1gc-0r8bq eu e joining the two charges?

  Is it possible to have a zero electric field value mo 6w: 4bl)ojmbetween two positive charges along the line join:l om) w46jobming the two charges?

  Electric field lines near ps 4rwz 0e: 4q)cdww5iwaitive point charges

  The electric field show4hup:v7 (xrds n

  Can electric field lines intersect in free skv b;fz, .7nrdpace?

  A solid block of metal in electrojrjjrx5ki. urr e5i:)q v)76 nstatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field ivr.r7ire ij 5j: r6jn )5x)kqun the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal o3pz 1b4we+b nw;-bso diameters are each given the same charge, the electric field (E) midway between t4 ;b o-pz onwebwb+3s1he center and the surface is

  A cubic block of aluminum rests on a wooden ts6rzr+ b n28zrh6b36 uki01jy)ui z ueable in a region where a uniform electric field is directed straight upward. What can be said concerning1e+)8 zruhb0ynrk i2j b 6z3z66ru isu the charge on the block's top surface?

  If a conductor is in 3rsdq -l6wpb*fgyhluy6 5x4*electrostatic equilibrium near an electric charge

  A positive point charge is enclosed in(*vivpqf ;j rf ,yzn16 a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a poin1v,zy *iqn6f ;frpjv (t directly above the hollow sphere has

State three properties of conductors in static eu)dvr*oq uz4 m*x3n7w quilibrium.

State Gauss's law.

  The charge carried by one a ric8x8s b95eelectron 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 +2d, 2oss/q.qgx.00 mC. How many more protons than electron 2/d x,sqqogs.s does this piece of plastic have?

  What is the charge onr1n9ac( unv. nc3g; qb 1 kg of protons?

  An atomic nucleus has a char,-2* ubj2pyk xwisvfco *8jf*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 value elp-s ma8)4mvy7p c+ns of 2.0 and -4.0 mC, respectively. What is the magnitude of the ele8yp-n mv7cp ams4 el)+ctric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 9u exoue5dbq a+*j / 7luu(ax11.0 N. What */l7x+auxuue 9 qj1ue b5( aodis the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apar(26z x2cxic5apt r3 pbuq;9z d7 zwky-t are they?

  The force between a x(lf:1yr0.9leuj y -y ys)n wlqd8d:q$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.tz8edvcid t0z-1 ,w9z0 cm apart, experience a 1.0-N force. If they are mo ztt0wdi9c-,1dvzez 8 ved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis.u az7l h0a+k:(c oiwp6 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 z(aw: h ikopa706ul+c acts on the charge at the origin?

  Three point charges are placed on the x-axis. A cgsxcn 7xm/5e; harge 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 ;5xg xcsn/7me charge at the origin?

  Three point charges are located at the followig q k7r+d.zj)eng 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 t).jqrzd + kg7ehe force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a secon n5vaakq56 xt0d point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of akqt55n6x0a v2.0 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 ee cjaz r8w-,(5me/mx at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is thm5j,x e /mer8zcewa(-e 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 at (0, 0.10 ml,*qv 2uja 3bh0is(m:uxx:xo ); Q3 = 5.0 nC is at (0, 0). *x,l(oau himxs 3:bvx0u:2q j What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equyy4+i9qr e x7tilateral triangle which measures 30 cm yt+7 exy94i rqon 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 b c0lq n-i2n9jjy 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 woulq- n l9j0cjn2id be zero?

  A +3.0-C charge is at the origin and a z m jc4ygxy9,9+9.0-C charge is at x = 4.0 m. Where on the x-axis can a thg4 j x9ymy,c9zird 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 = 4-x ,o7 ypn:zl*;+qmc-ahbgpy 6hfcw2a. Where can a third positive charge +q be plo,xca wb;76czy 4gpp+l*h-qf:- ym nhaced so that the force on it is zero?

  A copper penny has a mass of * q6cv:acrt1g 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 attraci( ww3xm,t(kbykp*-gtion of a fixed proton xt 3kyg-,p*kw(( im wbsome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from y-y;dpe k4l(w a common point by nonconducting threads which are 30 cm long. Both are given ;epyw ( k-4dylidentical 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 the magnitude of the electr4yy;gmhr0ev* 1hak /iic field at a distance of 1.0 m froykvaymh 4g *0/re ;1ihm the nucleus?

  What are the magnitude and direction o them,g2v4j9 lf the electric field at a distance of 1.50 m from a 50.0-nC 9gvml4t2 ejh,charge?

  A 5.0-C charge is 10 m from a small t mkk+z0/paar 9est charge. What is the magnitude of the electric field at the locazpa/+ 0krmka9 tion of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directio6f.b2n pmhf3h;lzs c,n of the electric fie. ;mflfc 26 hbznhsp3,ld?

  A 5.0-C charge is 10 m from axg2.5+f 5buxtrijt;k2i l gs8w21i kh small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the tes2 g;riki551+sktfw 8u t 2ij.b2x xlght charge?

  Two point charges each have a value of 3.0 C and are separated by a dist janlzq)s+8 )i*9ltu q kow/a6ance of 4.0 m. What is the electric field at a point ja iow)ka)t69 u*zlsl qq/+n8 midway between the two charges?

  A 5.0-mC charge is pla9zua gq dgc- t: pl2h:)ia+-daced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What ig quzad :cp-a+ itlhdg92 a)-:s 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 mC bk snr.skt*bc3gkpez+0,r u6 l mt*4 6charge is placed at the 50 cm mark. At what point on a 0kr,nkp * +s3 46bg.trmbzcust*ke6 lline joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed acp e+f(8mgppv* tdi* ,k j.tm5t x = 0 and x = 0.20 m. What is the m pd5*k(p,*pc m imvt+tj8e f.gagnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The wt. w-wh ,y*rklast corner is occupied by a -3.0 mC charykh.*wt rww,- ge. Find the electric field at the center of the square.

  Consider a square which is 1.ztyu-fdc 3 ueo 81i/2k0 m on 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 electric field at tczt ou2dfk 3yu8 -i/1ehe square's center?

  A force of 10 N acts on a charge of 5.0 mC when ,udim uj;t7 x1u g1r5pit is placed in a uniform electric field. What is the magnitudrujg1i 1t mx,up75ud;e of this electric field?

  A particle with a charge oj7(+e iqjaqsso0s+ n /f 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 eleq10 yquw8wyk 0ctric field of 6000 N/C pointing downward. What charge must be placed on the ball for it tu0y1k0 wqq8wyo be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is place sbvtw q*zd f qw1lz/3r,w70w;d inside a uniform electric field, and is suspended against the force of gravity. Wdzzq/3ts lqwbww;r,*17fwv 0hat are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge ofjem*mcm/)zz*h cio9qh t(0gibl :3e- +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphe*j z/gchec-tm3 *ql:i(h0z mbom)ei9re's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wh v-4 0bvsrj1ftat is the electric s10f rvbv4 tj-field 6.0 cm from the center of the sphere?