State the law of conservation of electric7 -smviq-mt)d7 m 5yjs charge.

  Is it possible for two negative charges to attrn :ubpzdc-t3e1 wn( izee1,r6 act each other?

  Is it possible for a positive and a negative charge to attract h02fq0ib o9bweach other?

  A glass rod is rubbed with a piece ofh1olt7j 8eq k5,cyoi- silk. During the process the glass rod acq7chlo qo-t8,je1kyi 5uires a positive charge and the silk

  A proton carries a

  The model of the atom smlmjta fo3fr41 ma*v ,44 ss e5wjn:/phows a

  A neutral atom always ha ihq4ub3o .:7rkf 60h0 fqlxuts

  An atom has more electrons than protons. The atom i* 3cc*svo6 qal+ar0 mvs

  Materials in which the electrons are bound very tightly to the nuclei are referr:yqu-70 q7d/4gv jjl nve,o.jn d; kamed tv,djy7e-q/ :j;u. ad4l7jvnnmk 0q ogo as

  Materials in which the electrons are bound very loosely to the nucy j,jun 4;c53vn)ybw plei and can move aboypvw4, jcyj3 u nb;5)nut freely within the material are referred to as

  A negatively charged rod is brought near fb7pv j5ej+, ;if3ctn one end of an uncharged metal bar. The end of the metal bar farthest from the char 5 fn3 b7vp+j,ifct;ejged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral7tbc4l(yr d a/ ms6s5g. They are placed near each other on an insulated table. Sphere B is briefly touched with adm6sr/gyab 457ls c (t wire that is grounded. Which statement is correct?

  How can a negatively chargezz1jmk* or68v5jo+z;x 1+bqpldyn - bd rod charge an electroscope positively?

  An originally neutral elecvs;kx(p 2z:e itroscope is briefly touched with a positively charged glass rod. The electe(2 v;:xkspz iroscope

  An originally neutra1tcsb 3k0bele j/w96* a,tgkka+ q2a gl electroscope is grounded briefly while a positively charged glass rod is held near it.9teslkg+1 ta b0c 6ag,3k2kb/jaewq* After the glass rod is removed, the electroscope

  A positive object touches 9f/ocd,t7w)r*gfd cb a neutral electroscope, and the leaves separate. Then a negative otb/g cf 7 ,9wf*co)drdbject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an rwv y6ygn 5 y4dzi19d((7yhlkinsulated 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 object. At no time does either ball touch thev5( ( g4zhdyy1inkyydr796wl negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constneo4r/su hde) /;p i7iant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thy; ma/;vk2 zkte first charge is larger in magnitud ;v tzkyk/2am;e than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are place6 cmk ow,ang.7/zpo9f ybm.l8 d near each other on an insulated table. Which statement bestc9 n m,o .k6f8pz.o/glbway 7m describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If 5vg) i 5g/ulfz1 shct)the charges on both objects are doubled with no change in separation, the foric1gz5fugh l/t) v) 5sce between them

  Two charges are separatfgy:nj))b/tzg-i gh m/,f(l ped by a distance d and exert mutual attractive forces of F on each other. If the charges are sezy i):(l/p, )nggmfg fb/-tjhparated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to td4ya +2z;m o,c2c1*c s,gzfkp 8nkdn ehe force between them if one charge is doubled, the other charge is tripled, ancd,s*1dkzk np2 ca m4 c 8geo2zn;fy+,d 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 separatinmhg55w c :l8w1mb.d:*zj ited by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electr tb5.w:*im18ijwm h c:nzd5 lgon is placed next to the first electron?

  An electron and a proton are separatedj :/esg*7s u ml,(ep+r h;n78hvdtvs t by a distance of 1.0 m. What happens to the magnitude of the force on the fsent* d plj hgvh7+strm; v(u7s/ ,e8:irst electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance 9be528 )m2sr+ spcod3p)piofouh j4 qof 1.0 m. What happens to the size of the force on the proton if the elecejcoi )8 3u h4po) sqppfb5s22orm9+dtron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center o zhgu/rw7 83qxz2nw qazw:j5 2f 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 th3 x8jaz2wgn/w2rq5q zhwz 7:ue positive charge at the center of the square?

  A point charge of +Q is placed at the nb hvlbh ()cmh(q- g)*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 tm b*n )v-hhb) l((hcqghird charge of +Q placed at one of the other vertices?

  Which of the following id 73fat4em+ve 2j , ns6p)rolxs not a vector?

  At twice the distance from a point charge, the 4 sas/woka/96x;i ykwz9-q ;lqoeau) strength of the electric field

  Is it possible to have azuqieizy;e(s v 7i p v)59.ygaw8yn*8 zero electric field value between a negative and positive charge along the line joining the two charg8v*.5e;8 yyui9ie z pz7 inw(avyq s)ges?

  Is it possible to have a zero ele,bijw;z k.2:; pqlixwq )b yp6ctric field value between two positive charges alz;)yb, l62 kp: p.jwiqwbiq ;xong the line joining the two charges?

  Electric field lines near psitivuw28dpxt-u5k e point charges

  The electric field svio h6rl)e 4p;hown

  Can electric field lines in 5b/an s4 kmogp*ccxxs*2t; .jtersect in free space?

  A solid block of metal in electrostatic equilibf;a*. jx 4iuvarium is placed in a uniform electric field. 4v u.x*j aaif; Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eaczy-9e,lwcp(5me,d ut h given the same chargepy -z u5(9l,tdcemew,, the electric field (E) midway between the center and the surface is

  A cubic block of alumi68i, t cni ul:imnc6p;num rests on a wooden table in a region where a uniform elecu mi6cn6; iip:nct,l8 tric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elr eej lp5a2qa-v/fvw5+lzlzg9 n8./aectric charge

  A positive point charge is enclosed in a hollow me*b-+ wmp(nvw jtallic sphere that is grounded. As cb*p(- +vwjnwm ompared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertiespb(4wa p5 loc1 of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron ibcv;/abts* rpan s3d 7- nfthe)24m2cs $e = -1.6 \times 10^{-19} \; C$. 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 proto*qj rohror+ ik;w36.kns than electrons does 6k; w+r*kjohirr.3o q this piece of plastic have?

  What is the charge on 1 kg*ww3 d: z2(tuugn)uj5b3tl bg of protons?

  An atomic nucleus has a charqo vs4ls2ufgqw lzm:/ zm.(*) ed5qk2ge 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 valyl9: dot/e h).ret 8jgues of 2.0 and -4.0 mC, respectively. What is the magnitude of the .r:8o y)dt9j th/egelelectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the forc 7eb0r6(tdh gqe between them is 1.0 N. What is thd(6 7qgebrt0he magnitude of the second charge?

  Two 1.0-C charges have a fortn9ytfvf q.)lw 4x15 g2uz6p gce between them of 1.0 N. How far apart are they?

  The force between a w.0r t9mqfwawxk/;f*$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienc:vsl(w.5yq s ze a 1.0-N force. If they are moved to a new separation of 8.0 :z(vql5yw.s scm, what is the electric force between them?

  Three identical pointq tyxa *4+h7tf charges 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, and the third is at the 100 cm mark. What are the magnitude and direction of the elqah4y 7*x+ttfectrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is plac:dn:7u x: d,g r oa.o7ltopxy*ed at the origin, -2.0 m C to the righd o:.7udaotonyg:7p xxrl,:*t 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 origin?

  Three point charges are located at the following positions: Q1 = 2.x ; i m2/czqo:egdvp p/zq0w,uk,+ t+h00 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 ma2w+q vk x/+udp :oimhtqpezg ,/c ,;z0gnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the ggv yip szkm0l,fisun)132- 4p2t: sgcenter of a square, and a second point 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 cmy k0 pf3sgn21:s,i 2gvlpzsut-i4 )gharge 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 (06rdvj(*vy tc7dv.; xu, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net fo.vvd6*d 7 r tjv(xucy;rce 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 = 5 5+kgso;zx6r sodv/: vr1u l4u.0 nC is at (0, 0).s64rxo z5 us1r:v+/u;kvld o g 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 eo7m5qyu4ztzuh,mr* f4dun 81ime-/u quilateral triangle which measures 30 cm on ah4quzt u5 inmy* m1d - e7uuo8f,r/mz4 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 sk+u2pjojx) 0n eparated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -o+ )ku02xj jpnQ such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and f6n2u egf9a49m+vce9ot l r-fqm)7ipa +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be pl 92ue-p r7f lmvae)fmtgno9c+ i6f4q9aced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q9*swld u9u/hf 0t +icc is placed at x = 2a. Where can a thts0/c iwlfu+hd9 u9* cird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.2er:dcks,t uwm2 v5hy yb7sw3q9t6 v ;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 agq44 x-elxd.+,4jf z wkm dsi6sainst the force of gravity by the attraction of a fixed proton some distance xmski,44zsx46dj. fq-w ed+l above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by non4 v/azsb+q9vjconducting threads which are 30 cm long. Both are /v 4bq+vsjaz9given 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 mqthbkk5-t wphbs; 5-tl+r(m .k o-,ha charge of +40e. What is the magnitude of the electric fieltk+rl. sm5 tq mbhht,5o(h- kk-;wpb-d at a distance of 1.0 m from the nucleus?

  What are the magnitude and directionmxlni9 5bx,pz;3up 8o of the electric field at a distance of 1.50 m from3;zn ,lpximpx9bo 58u a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Wh3r s76zhkqhu qt*b-n f,0g lm5at is the magnitude of the electric field tb khfgus6h0* mz5qn3lr, -7q at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the 3*tmuvbz ;d. odirection of the electricvuo; bdm 3.*tz field?

  A 5.0-C charge is 10 m from a cqo:f(r ra5d/ small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at th/5:dc ro(arqf e location of the test charge?

  Two point charges each have a value of 3.0 C z2n0k eq9djw*cmvw2 q1y-+fm and are separated by a distance of 4.0 m. What is the electqwf9de- nv m 2+z0c2*m1ykj qwric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of k+v*n a7etlhv;jjfm jqkr+3t-722j c6*bqxc a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the +3 *2b ktm cjjja- th; cvjkvl2q *7nqr6+fe7x30 cm mark?

  A 5.0-mC charge is place;hmiz4 mv 43r4x7ldbxd at 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 z7vbr4ix;43mdmhx 4l 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 ;k k2 n6 eegtqc+myu4;= 0.20 m. Whkgqeu;6te;nm 42 +kyc at 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 square of side 0.aw)- ujvd- o706crirt50 m. The last corner is occupied by a - r-rc)adt7oivu 6wj- 03.0 mC charge. Find the electric field at the center of the square.

  Consider a square whiceav4(7 khk9 l20 w,2wy l/skkk7r uvjoh is 1.0 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 isv(yklwukwl2ek 27 o 0h k9ja/v7ks4r, 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 placelo5s hc( zcxhz*( z(j5d in a uniform electric field. What is the magnitude of this electrih*o 5(zjscxhzcl z5(( c field?

  A particle with a charg3v:*4euiob 54clao bc- t -oeie 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 j, ukq, m,v2r ;.akcpzof 6000 N/C pointing dowkvc,,arq ukm, p jz2;.nward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge r .+,j.s)dqnltq qm1k of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric, n qq)t ql.mjkd+r1s. field?

  A metal sphere of radiubsr)n 6h ( r2e8 uff7tfng:x*ewe*3ajs 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field n(8u )n 36t e:hres7 *wfg afrefjxb*25.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge oan,c,*n0;2onzqv h xg8vc a p6f 3.0 mC. What is the electric field 6.0 cm frc82;acpv6hx ,ng*z0n ovq n ,aom the center of the sphere?