State the law of conservation of1 :6exxwg e) .bzruau3 electric charge.

  Is it possible for two negative charges to attract each othnh jzs; jth6s0q-*q ,bydv)- ser?

  Is it possible for a positive and a +q9daoziw).kn k 2l. a+*7nfg7 y r py*qzaus3negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Duringdo)-tnr+,8k5y ,as0alo j0mnsnd )js the process the glass rod acquires ,+0dlm)as to-0skjo)na jdnny,sr5 8a positive charge and the silk

  A proton carries a

  The model of the atom shows ,1t,h2/zq tyqyvd:v aao-/5 a sacg 2wa

  A neutral atom alwayy f-fqj- ywr08s has

  An atom has more electrons than protons. The atom il*g/ ndave 8+ws

  Materials in which the electrons are bound very tightly to the nuclei arg b 3).r3:rzynvj)br qe referred to as: rj)gb.r3zr 3 nqyvb)

  Materials in which the v4w41t kt.9n/ldoi qv electrons are bound very loosely to the nuclei and can moven1q t vwvtkld o/i494. about freely within the material are referred to as

  A negatively charged rod is brough) ..utti +7*1m jox onxea7wzmt near one end of an uncharged metal bar. The end of the metal bar farthest from the charged r xt77umox1)o .t +nme.a *wizjod will be charged

  Sphere A carries a net positive charge, a 4tv6 gw0svp.dnd sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which svd p4w.s 06vgttatement is correct?

  How can a negatively charged rod charge an electroscope positivw/hudu vk-91orpiv9 )2nz*w; ;ymdfhely?

  An originally neutral electroscope is briefly touched wrtxc 4b p)91acith a positively charged glass rod. 4cc9) pbta1 xr The electroscope

  An originally neutral electroscope is grounded briefc,) av bypi/k5ly while a positively charged glass rod is hel avc 5)i/pykb,d near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separagqd 7- + )fktp;nyy.qute. Then a negative object is brought near the electroscope, but does not touch it. W.-+kdp ngf yuyt;7q) qhat happens to the leaves?

  A large negatively charged object is placed on an insulary ebet:;g3 guo(7yf4 ip;va9ted 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 fiyg97;4ut;aybep :ofer (3vgirst 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 Cowb3 3-p/ny9u6aa3 1ibz yu xt8sdo9viulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. zxz8;if0hu 3mThe first charge is larger in magnituu0mfz; h3 8ixzde than the second charge.

  Sphere A carries a net charge and1 qazd )2:(f fecvy,mg sphere B is neutral. They are placed near each othe,cv1qag: yfd2fz )(me r on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges on hdpaa og*x73xn4(h a;both objects are doubled with no change in separation3aa (xoh ;h7pda*nxg4, the force between them

  Two charges are separated by a distance d and exert mutual attractive qcsnnb*p127d forces of F on each other. If the charges are separated 2ncnp 1bq7* dsby a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What hfatw7qvb/8 g/q/. nu qappens to the force between them if one charge is doubled, the otg b/t/q7q8u/fa. wqvn her 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 b3cotjo 8u sx6c0-*+ umwc5pdpy a distance of 1.0 m. What happens to the magn*wcpc+ t 5j-sx0 om3o d8c6upuitude 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. Wh,u+fvvrt2tpbdti 9 p, ja;0)iat happens to the magnitude of the force on the first electron if a second electron is plact tpbau2)i,0;vt 9fji+dp r, ved next to the proton?

  An electron and a proton are separated by a distance of 2j h icgn(72ib1.0 m. What happens to the size of the force on thej i72bgn 2ch(i proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Whe1fgnbkp:)or-ac /c v1n 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 t aopncbfcv1k-gr) 1/: hree 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 isgalgme21g:cotmt l6/: wk:rg4sav4 ap9( 6cz 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 the force that acts on the center charge due to a third charge of +Q placed at one of the 1m 9g64 tma ::rg2cllpe k ca(oggswzv:6t /a4other vertices?

  Which of the following is nopg bmwth7y ss:h i7. d-n69ka6t a vector?

  At twice the distance from a point char btqj(kq5)c x.ge, the strength of the electric field

  Is it possible to have aavjob,c,dtw*lhb) :, m:xs+ s zero electric field value between a negative and positive chw),dhsj ls:x b, o *c+:bma,tvarge along the line joining the two charges?

  Is it possible to have a zero electric field value bem*qxan+w1qp*6 g :4fp j6fhihtween two positive charges along the line joining the twoq+hmpfg n1:4 a66hfx*pwijq* charges?

  Electric field lines near psitive poinq) xsf el1fu49t charges

  The electric field shownvumk1;hiv c1vj, y2c /

  Can electric field lines intersect in free /1ts(iy)ssj6o4 sakcjeri hs0i5/ j - space?

  A solid block of metal in electrostati8g/zisvl0cc6 v6pp2g c equilibrium is placed in a uniform electric field. Give a statement conceripc6 v8gzl0 gv s/6c2pning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphev u9;k+ 2pcy1* qw2y( klgbilbre of equal diameters are each givlyk;w 2l k(12i +b qpgb*u9cyven the same 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 where a uniform- y25,f)9q6i mnwy,obshnnd f electric field is directed straight upward. What can be said concerning the chw yo6, qn2 bdi mf)yn-f,5ns9harge on the block's top surface?

  If a conductor is in electrostatic equo4dp )n zd+ha/ilibrium near an electric charge

  A positive point charge is enclosed in a hollowfmr qq.4nrn7.a n1um, metallic sphere that is grounded. As compared to the case withoum,7a. rf .qn14run nmqt the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductotw1w+mqsmh(f s xy76l i;6s b/9-df btrs in static equilibrium.

State Gauss's law.

  The charge carried by onfgzndl 27td*d bx w8,6 aqryk) u:7-ute 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 i7 s pm)bt*th;charge of +2.00 mC. How many more protons than electrons does mpih7;*)t bts this piece of plastic have?

  What is the charge on 1 kg of protons?1bgrvff 6 p+a6

  An atomic nucleus has d loi;ulv -7el0..da ivy7)gr a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sep1xvw lcock*- mbmu8 +-arated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force b l+ k*m1v-uwocbcx8m- etween them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 Nm 4o74nyvkg/d .q)4gupq1wa w. What i7wa/ gq )pk4y4w1uqv.g on d4ms the magnitude of the second charge?

  Two 1.0-C charges have a force between them of qi 8*htmcfpvd d;xl55zs )b )*1.0 N. How far apart are they?

  The force between a *ioa,b9y16uj 6vxb-ijqq ib 1$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienl ,q9 c/9,f fcw.mtlqjce a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between thejt9l lc/ , ffc,q.qwm9m?

  Three identical point charges -ro y8pel6:(*:zha sfelqp,trgq57 s of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, arpa6g s5q,(f7tqhs-leo:ryl z*e :8p nd the 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 the x-axis. A chcmaz 0*1 ar; -951kswvb sddsearge 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 ;s0* s1m5z 1wed-9 ardsvackb and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC a9fmjw.x (/ ayibfi-4 st x = 1 fs (afijxb4mw.-iy 9/.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 charge?

  A point charge of +Q is placed at the center of a square, and a second poinnzq2c7 *5:9 ba(-qc d(bellq a1ap ynkt charge 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 placedl(q: yqcp5b29d a 7-z(b1kn*naelqc a at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.rvqvg.q8 e9u -10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0- 8qq9v .urveg nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at.; 7 zg1yq r-zh( wn)h8efkfci (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net rzi h g(1f8wq;c7 -khzf.nye)force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an;sgxyx0/*gqj ;ds9 5 pap/fcs equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts ;//cpg s5* sydf0jsgxp9;a xqon any one of the charges?

  Consider point charges of +Q and +4Q, whimg2vn*l e up*zf9 h;1x7 bp9zpch are separated by 3.0 m. At what point, on a line between the two charges, would it be9z 9*zgb;pppf*x nvh1um72 el 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 =;j8 /s+fc1xfnbat rj5okm5 e7 4.0 m. Where on the x-axis can a third charge beff co1 5+asr5x8b; j/ ekt7mnj placed so the net force on it is zero?

  Charge +2q is placed at the origin and char zn ;jd6:7qsnmge -q is placed at x = 2a. Where can a third positive charge +q be placed so jm7d ns;q6 nz:that the force on it is zero?

  A copper penny has a mass o3blka u b4eu9f5m1uk*y2was+ f 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 th0 quy )sk e0p4*cxsob:e force of gravity by the attraction of a fixed proton some distance aboveqcoss* uye4 0p :)b0xk it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads di2v 26j/zpmiwhich are 30 cm long. Both are given identical charges, and the electrostatic rep pzv/ 2dijmi26ulsion 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 char2yzq -wxghh a0b78xp3ge of +40e. What is the magnitude of the electric field at a distance o28x qagywh-p z bh7x03f 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distanc0,ltm mo c/qxh dh2-a3g,s1lxe of 1.50sc x/ 3,xolh2-h0 d,qatglm1m m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude rj.cbr pf0+phqzoew,h8/, 5jof the electric field at the locatr0werz8ch,5/.bf+, hjp q pjoion of the test charge?

  A 5.0-C charge is 10 m fros ti0c;i j;(05, bgec/fsxmgum a small test charge. What is the direction of the electric ( j0sc sufb;g0gxe,5ict ;im/field?

  A 5.0-C charge is 10 m from a6+bi;zdlh bp. o j gt(*anqrt(c2/; 6qqlv5 mp small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the loca( jom/+ipg t r5lv*b;tqb.h2 (dqqzl c;np66a tion of the test charge?

  Two point charges each have a value of 3.0 C and are separated nv;(v .;nqixrnw t ;i2r 9t2q9x:ygffby a distance of 4.0 m. What is the electric n2n f. (fg;it2x ; q iy9qxvrtw:9rn;vfield at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stihf lixbai e /0+4/f3rcck and a -4.0 mC charge is placed at the 50 cm mark. What ishl/ x03/ei4bcfrai +f 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 char j+xx5n ;a8un*d0w ygdge is placed aagxd8j0d;uy*5xnn w +t the 50 cm mark. At what point on a line 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.qqyvhsy)8 iz l, 9,vi+20 m. What is the magnitude ol) vqish 8zqy vy,9+i,f the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners x(v4m1s t::tdj-hmfc t1uxw+of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the exj4hs(+t:tmvmtu f d:- cxw1 1lectric field at the center of the square.

  Consider a square which is 1.0 m on a sieqs1 ht;)+zyjz-- m igde. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); ji hyem-z+t);qz g-s 1+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 placeh.x(ft7+gzheo k3 j5m d in a uniform electric fie.7+ mtgz fhxe(ok3jh5ld. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of*:8p/ wm) ju-pvznhxw $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is place6ty(pv.efm7: dn . v-iy nzbby.4d5c yd in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be.deyy56y .ibnvczy. n tfpv7:d-m b4( suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is p:k; gi dj-5) iwukfoe5laced inside a uniform electric field, and is fu5ikew): igj- odk5;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 magnitz)13bi:rw p 66;fik)swyoefyude of the electric field 5.0 cm from the sphere's yzifyb):fo61e )w3s 6k i pr;wsurface?

  A metal sphere of radius 2.0 cm carries a )uzxn kkp/ z5by72e*pcharge of 3.0 mC. What is the electric /pp2kz*y xk z)eub7n5 field 6.0 cm from the center of the sphere?